vendor: bump k8s dependencies to v0.29.2

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

go.mod

@@ -45,16 +45,16 @@ require (
 	go.opentelemetry.io/otel/sdk v1.19.0
 	go.opentelemetry.io/otel/sdk/metric v1.19.0
 	go.opentelemetry.io/otel/trace v1.19.0
-	golang.org/x/mod v0.13.0
-	golang.org/x/sync v0.4.0
+	golang.org/x/mod v0.14.0
+	golang.org/x/sync v0.5.0
 	golang.org/x/sys v0.16.0
 	golang.org/x/term v0.15.0
 	google.golang.org/grpc v1.59.0
 	gopkg.in/yaml.v3 v3.0.1
-	k8s.io/api v0.26.7
-	k8s.io/apimachinery v0.26.7
-	k8s.io/apiserver v0.26.7
-	k8s.io/client-go v0.26.7
+	k8s.io/api v0.29.2
+	k8s.io/apimachinery v0.29.2
+	k8s.io/apiserver v0.29.2
+	k8s.io/client-go v0.29.2
 )
 
 require (
@@ -88,19 +88,20 @@ require (
 	github.com/docker/go v1.5.1-1.0.20160303222718-d30aec9fd63c // indirect
 	github.com/docker/go-connections v0.5.0 // indirect
 	github.com/docker/go-metrics v0.0.1 // indirect
-	github.com/emicklei/go-restful/v3 v3.10.1 // indirect
+	github.com/emicklei/go-restful/v3 v3.11.0 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/fvbommel/sortorder v1.0.1 // indirect
 	github.com/go-logr/logr v1.3.0 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
-	github.com/go-openapi/jsonpointer v0.19.5 // indirect
-	github.com/go-openapi/jsonreference v0.20.0 // indirect
-	github.com/go-openapi/swag v0.19.14 // indirect
+	github.com/go-openapi/jsonpointer v0.19.6 // indirect
+	github.com/go-openapi/jsonreference v0.20.2 // indirect
+	github.com/go-openapi/swag v0.22.3 // indirect
 	github.com/gogo/googleapis v1.4.1 // indirect
-	github.com/google/gnostic v0.5.7-v3refs // indirect
+	github.com/google/gnostic-models v0.6.8 // indirect
 	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
 	github.com/gorilla/mux v1.8.0 // indirect
+	github.com/gorilla/websocket v1.5.0 // indirect
 	github.com/grpc-ecosystem/go-grpc-middleware v1.3.0 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.16.0 // indirect
 	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
@@ -110,7 +111,7 @@ require (
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/compress v1.17.4 // indirect
-	github.com/mailru/easyjson v0.7.6 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-runewidth v0.0.15 // indirect
 	github.com/mattn/go-shellwords v1.0.12 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
@@ -129,6 +130,7 @@ require (
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_golang v1.17.0 // indirect
 	github.com/prometheus/client_model v0.5.0 // indirect
@@ -155,11 +157,11 @@ require (
 	go.opentelemetry.io/proto/otlp v1.0.0 // indirect
 	golang.org/x/crypto v0.17.0 // indirect
 	golang.org/x/exp v0.0.0-20230713183714-613f0c0eb8a1 // indirect
-	golang.org/x/net v0.17.0 // indirect
+	golang.org/x/net v0.19.0 // indirect
 	golang.org/x/oauth2 v0.11.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
-	golang.org/x/tools v0.14.0 // indirect
+	golang.org/x/tools v0.16.1 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/genproto v0.0.0-20231016165738-49dd2c1f3d0b // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20231016165738-49dd2c1f3d0b // indirect
@@ -167,10 +169,10 @@ require (
 	google.golang.org/protobuf v1.31.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
-	k8s.io/klog/v2 v2.90.1 // indirect
-	k8s.io/kube-openapi v0.0.0-20221012153701-172d655c2280 // indirect
-	k8s.io/utils v0.0.0-20230220204549-a5ecb0141aa5 // indirect
-	sigs.k8s.io/json v0.0.0-20220713155537-f223a00ba0e2 // indirect
-	sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect
+	k8s.io/klog/v2 v2.110.1 // indirect
+	k8s.io/kube-openapi v0.0.0-20231010175941-2dd684a91f00 // indirect
+	k8s.io/utils v0.0.0-20230726121419-3b25d923346b // indirect
+	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect
 	sigs.k8s.io/yaml v1.3.0 // indirect
 )

go.sum

@@ -146,12 +146,9 @@ github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4
 github.com/docker/go-units v0.5.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
 github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7 h1:UhxFibDNY/bfvqU5CAUmr9zpesgbU6SWc8/B4mflAE4=
 github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7/go.mod h1:cyGadeNEkKy96OOhEzfZl+yxihPEzKnqJwvfuSUqbZE=
-github.com/docopt/docopt-go v0.0.0-20180111231733-ee0de3bc6815/go.mod h1:WwZ+bS3ebgob9U8Nd0kOddGdZWjyMGR8Wziv+TBNwSE=
 github.com/dvsekhvalnov/jose2go v0.0.0-20170216131308-f21a8cedbbae/go.mod h1:7BvyPhdbLxMXIYTFPLsyJRFMsKmOZnQmzh6Gb+uquuM=
-github.com/elazarl/goproxy v0.0.0-20180725130230-947c36da3153 h1:yUdfgN0XgIJw7foRItutHYUIhlcKzcSf5vDpdhQAKTc=
-github.com/elazarl/goproxy v0.0.0-20180725130230-947c36da3153/go.mod h1:/Zj4wYkgs4iZTTu3o/KG3Itv/qCCa8VVMlb3i9OVuzc=
-github.com/emicklei/go-restful/v3 v3.10.1 h1:rc42Y5YTp7Am7CS630D7JmhRjq4UlEUuEKfrDac4bSQ=
-github.com/emicklei/go-restful/v3 v3.10.1/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
+github.com/emicklei/go-restful/v3 v3.11.0 h1:rAQeMHw1c7zTmncogyy8VvRZwtkmkZ4FxERmMY4rD+g=
+github.com/emicklei/go-restful/v3 v3.11.0/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
@@ -168,23 +165,22 @@ github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
-github.com/go-logr/logr v1.2.0/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
 github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
 github.com/go-logr/logr v1.3.0 h1:2y3SDp0ZXuc6/cjLSZ+Q3ir+QB9T/iG5yYRXqsagWSY=
 github.com/go-logr/logr v1.3.0/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
 github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
 github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
-github.com/go-openapi/jsonpointer v0.19.3/go.mod h1:Pl9vOtqEWErmShwVjC8pYs9cog34VGT37dQOVbmoatg=
-github.com/go-openapi/jsonpointer v0.19.5 h1:gZr+CIYByUqjcgeLXnQu2gHYQC9o73G2XUeOFYEICuY=
-github.com/go-openapi/jsonpointer v0.19.5/go.mod h1:Pl9vOtqEWErmShwVjC8pYs9cog34VGT37dQOVbmoatg=
-github.com/go-openapi/jsonreference v0.20.0 h1:MYlu0sBgChmCfJxxUKZ8g1cPWFOB37YSZqewK7OKeyA=
-github.com/go-openapi/jsonreference v0.20.0/go.mod h1:Ag74Ico3lPc+zR+qjn4XBUmXymS4zJbYVCZmcgkasdo=
-github.com/go-openapi/swag v0.19.5/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
-github.com/go-openapi/swag v0.19.14 h1:gm3vOOXfiuw5i9p5N9xJvfjvuofpyvLA9Wr6QfK5Fng=
-github.com/go-openapi/swag v0.19.14/go.mod h1:QYRuS/SOXUCsnplDa677K7+DxSOj6IPNl/eQntq43wQ=
+github.com/go-openapi/jsonpointer v0.19.6 h1:eCs3fxoIi3Wh6vtgmLTOjdhSpiqphQ+DaPn38N2ZdrE=
+github.com/go-openapi/jsonpointer v0.19.6/go.mod h1:osyAmYz/mB/C3I+WsTTSgw1ONzaLJoLCyoi6/zppojs=
+github.com/go-openapi/jsonreference v0.20.2 h1:3sVjiK66+uXK/6oQ8xgcRKcFgQ5KXa2KvnJRumpMGbE=
+github.com/go-openapi/jsonreference v0.20.2/go.mod h1:Bl1zwGIM8/wsvqjsOQLJ/SH+En5Ap4rVB5KVcIDZG2k=
+github.com/go-openapi/swag v0.22.3 h1:yMBqmnQ0gyZvEb/+KzuWZOXgllrXT4SADYbvDaXHv/g=
+github.com/go-openapi/swag v0.22.3/go.mod h1:UzaqsxGiab7freDnrUUra0MwWfN/q7tE4j+VcZ0yl14=
 github.com/go-sql-driver/mysql v1.3.0 h1:pgwjLi/dvffoP9aabwkT3AKpXQM93QARkjFhDDqC1UE=
 github.com/go-sql-driver/mysql v1.3.0/go.mod h1:zAC/RDZ24gD3HViQzih4MyKcchzm+sOG5ZlKdlhCg5w=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
+github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 h1:tfuBGBXKqDEevZMzYi5KSi8KkcZtzBcTgAUUtapy0OI=
+github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572/go.mod h1:9Pwr4B2jHnOSGXyyzV8ROjYa2ojvAY6HCGYYfMoC3Ls=
 github.com/go-test/deep v1.0.3 h1:ZrJSEWsXzPOxaZnFteGEfooLba+ju3FYIbOrS+rQd68=
 github.com/go-test/deep v1.0.3/go.mod h1:wGDj63lr65AM2AQyKZd/NYHGb0R+1RLqB8NKt3aSFNA=
 github.com/gofrs/flock v0.8.1 h1:+gYjHKf32LDeiEEFhQaotPbLuUXjY5ZqxKgXy7n59aw=
@@ -208,31 +204,26 @@ github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5y
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
 github.com/golang/protobuf v1.3.4/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
-github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
-github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
-github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
-github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
-github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
-github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
-github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
 github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
 github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
 github.com/google/certificate-transparency-go v1.0.10-0.20180222191210-5ab67e519c93 h1:jc2UWq7CbdszqeH6qu1ougXMIUBfSy8Pbh/anURYbGI=
 github.com/google/certificate-transparency-go v1.0.10-0.20180222191210-5ab67e519c93/go.mod h1:QeJfpSbVSfYc7RgB3gJFj9cbuQMMchQxrWXz8Ruopmg=
-github.com/google/gnostic v0.5.7-v3refs h1:FhTMOKj2VhjpouxvWJAV1TL304uMlb9zcDqkl6cEI54=
-github.com/google/gnostic v0.5.7-v3refs/go.mod h1:73MKFl6jIHelAJNaBGFzt3SPtZULs9dYrGFt8OiIsHQ=
+github.com/google/gnostic-models v0.6.8 h1:yo/ABAfM5IMRsS1VnXjTBvUb61tFIHozhlYvRgGre9I=
+github.com/google/gnostic-models v0.6.8/go.mod h1:5n7qKqH0f5wFt+aWF8CW6pZLLNOfYuF5OpfBSENuI8U=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/gofuzz v1.2.0 h1:xRy4A+RhZaiKjJ1bPfwQ8sedCA+YS2YcCHW6ec7JMi0=
 github.com/google/gofuzz v1.2.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
+github.com/google/pprof v0.0.0-20210720184732-4bb14d4b1be1 h1:K6RDEckDVWvDI9JAJYCmNdQXq6neHJOYx3V6jnqNEec=
+github.com/google/pprof v0.0.0-20210720184732-4bb14d4b1be1/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 h1:El6M4kTTCOh6aBiKaUGG7oYTSPP8MxqL4YI3kZKwcP4=
 github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510/go.mod h1:pupxD2MaaD3pAXIBCelhxNneeOaAeabZDe5s4K6zSpQ=
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
@@ -242,6 +233,8 @@ github.com/gorilla/mux v1.7.0/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2z
 github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
 github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
 github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
+github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/grpc-ecosystem/go-grpc-middleware v1.3.0 h1:+9834+KizmvFV7pXQGSXQTsaWhq2GjuNUt0aUU0YBYw=
 github.com/grpc-ecosystem/go-grpc-middleware v1.3.0/go.mod h1:z0ButlSOZa5vEBq9m2m2hlwIgKw+rp3sdCBRoJY+30Y=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.16.0 h1:YBftPWNWd4WwGqtY2yeZL2ef8rHAxPBD8KFhJpmcqms=
@@ -283,7 +276,7 @@ github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxv
 github.com/konsorten/go-windows-terminal-sequences v1.0.2/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
-github.com/kr/pretty v0.2.0/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
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@@ -295,10 +288,8 @@ github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+
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@@ -352,16 +343,18 @@ github.com/morikuni/aec v1.0.0/go.mod h1:BbKIizmSmc5MMPqRYbxO4ZU0S0+P200+tUnFx7P
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@@ -440,16 +433,19 @@ github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
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@@ -532,8 +528,8 @@ golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvx
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@@ -546,8 +542,8 @@ golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLL
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@@ -558,8 +554,8 @@ golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJ
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@@ -597,8 +593,8 @@ golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBn
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@@ -611,8 +607,6 @@ google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoA
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@@ -628,14 +622,6 @@ google.golang.org/grpc v1.27.1/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8
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 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
@@ -647,7 +633,6 @@ gopkg.in/cenkalti/backoff.v2 v2.2.1 h1:eJ9UAg01/HIHG987TwxvnzK2MgxXq97YY6rYDpY9a
 gopkg.in/cenkalti/backoff.v2 v2.2.1/go.mod h1:S0QdOvT2AlerfSBkp0O+dk+bbIMaNbEmVk876gPCthU=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
@@ -665,30 +650,29 @@ gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gotest.tools/v3 v3.4.0 h1:ZazjZUfuVeZGLAmlKKuyv3IKP5orXcwtOwDQH6YVr6o=
 gotest.tools/v3 v3.4.0/go.mod h1:CtbdzLSsqVhDgMtKsx03ird5YTGB3ar27v0u/yKBW5g=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-k8s.io/api v0.26.7 h1:Lf4iEBEJb5OFNmawtBfSZV/UNi9riSJ0t1qdhyZqI40=
-k8s.io/api v0.26.7/go.mod h1:Vk9bMadzA49UHPmHB//lX7VRCQSXGoVwfLd3Sc1SSXI=
-k8s.io/apimachinery v0.26.7 h1:590jSBwaSHCAFCqltaEogY/zybFlhGsnLteLpuF2wig=
-k8s.io/apimachinery v0.26.7/go.mod h1:qYzLkrQ9lhrZRh0jNKo2cfvf/R1/kQONnSiyB7NUJU0=
-k8s.io/apiserver v0.26.7 h1:NX/zBZZn4R+Cq6shwyn8Pn8REd0yJJ16dbtv9WkEVEU=
-k8s.io/apiserver v0.26.7/go.mod h1:r0wDRWHI7VL/KlQLTkJJBVGZ3KeNfv+VetlyRtr86xs=
-k8s.io/client-go v0.26.7 h1:hyU9aKHlwVOykgyxzGYkrDSLCc4+mimZVyUJjPyUn1E=
-k8s.io/client-go v0.26.7/go.mod h1:okYjy0jtq6sdeztALDvCh24tg4opOQS1XNvsJlERDAo=
-k8s.io/klog/v2 v2.90.1 h1:m4bYOKall2MmOiRaR1J+We67Do7vm9KiQVlT96lnHUw=
-k8s.io/klog/v2 v2.90.1/go.mod h1:y1WjHnz7Dj687irZUWR/WLkLc5N1YHtjLdmgWjndZn0=
-k8s.io/kube-openapi v0.0.0-20221012153701-172d655c2280 h1:+70TFaan3hfJzs+7VK2o+OGxg8HsuBr/5f6tVAjDu6E=
-k8s.io/kube-openapi v0.0.0-20221012153701-172d655c2280/go.mod h1:+Axhij7bCpeqhklhUTe3xmOn6bWxolyZEeyaFpjGtl4=
-k8s.io/utils v0.0.0-20230220204549-a5ecb0141aa5 h1:kmDqav+P+/5e1i9tFfHq1qcF3sOrDp+YEkVDAHu7Jwk=
-k8s.io/utils v0.0.0-20230220204549-a5ecb0141aa5/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
-sigs.k8s.io/json v0.0.0-20220713155537-f223a00ba0e2 h1:iXTIw73aPyC+oRdyqqvVJuloN1p0AC/kzH07hu3NE+k=
-sigs.k8s.io/json v0.0.0-20220713155537-f223a00ba0e2/go.mod h1:B8JuhiUyNFVKdsE8h686QcCxMaH6HrOAZj4vswFpcB0=
-sigs.k8s.io/structured-merge-diff/v4 v4.2.3 h1:PRbqxJClWWYMNV1dhaG4NsibJbArud9kFxnAMREiWFE=
-sigs.k8s.io/structured-merge-diff/v4 v4.2.3/go.mod h1:qjx8mGObPmV2aSZepjQjbmb2ihdVs8cGKBraizNC69E=
+k8s.io/api v0.29.2 h1:hBC7B9+MU+ptchxEqTNW2DkUosJpp1P+Wn6YncZ474A=
+k8s.io/api v0.29.2/go.mod h1:sdIaaKuU7P44aoyyLlikSLayT6Vb7bvJNCX105xZXY0=
+k8s.io/apimachinery v0.29.2 h1:EWGpfJ856oj11C52NRCHuU7rFDwxev48z+6DSlGNsV8=
+k8s.io/apimachinery v0.29.2/go.mod h1:6HVkd1FwxIagpYrHSwJlQqZI3G9LfYWRPAkUvLnXTKU=
+k8s.io/apiserver v0.29.2 h1:+Z9S0dSNr+CjnVXQePG8TcBWHr3Q7BmAr7NraHvsMiQ=
+k8s.io/apiserver v0.29.2/go.mod h1:B0LieKVoyU7ykQvPFm7XSdIHaCHSzCzQWPFa5bqbeMQ=
+k8s.io/client-go v0.29.2 h1:FEg85el1TeZp+/vYJM7hkDlSTFZ+c5nnK44DJ4FyoRg=
+k8s.io/client-go v0.29.2/go.mod h1:knlvFZE58VpqbQpJNbCbctTVXcd35mMyAAwBdpt4jrA=
+k8s.io/klog/v2 v2.110.1 h1:U/Af64HJf7FcwMcXyKm2RPM22WZzyR7OSpYj5tg3cL0=
+k8s.io/klog/v2 v2.110.1/go.mod h1:YGtd1984u+GgbuZ7e08/yBuAfKLSO0+uR1Fhi6ExXjo=
+k8s.io/kube-openapi v0.0.0-20231010175941-2dd684a91f00 h1:aVUu9fTY98ivBPKR9Y5w/AuzbMm96cd3YHRTU83I780=
+k8s.io/kube-openapi v0.0.0-20231010175941-2dd684a91f00/go.mod h1:AsvuZPBlUDVuCdzJ87iajxtXuR9oktsTctW/R9wwouA=
+k8s.io/utils v0.0.0-20230726121419-3b25d923346b h1:sgn3ZU783SCgtaSJjpcVVlRqd6GSnlTLKgpAAttJvpI=
+k8s.io/utils v0.0.0-20230726121419-3b25d923346b/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
+sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd h1:EDPBXCAspyGV4jQlpZSudPeMmr1bNJefnuqLsRAsHZo=
+sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd/go.mod h1:B8JuhiUyNFVKdsE8h686QcCxMaH6HrOAZj4vswFpcB0=
+sigs.k8s.io/structured-merge-diff/v4 v4.4.1 h1:150L+0vs/8DA78h1u02ooW1/fFq/Lwr+sGiqlzvrtq4=
+sigs.k8s.io/structured-merge-diff/v4 v4.4.1/go.mod h1:N8hJocpFajUSSeSJ9bOZ77VzejKZaXsTtZo4/u7Io08=
 sigs.k8s.io/yaml v1.3.0 h1:a2VclLzOGrwOHDiV8EfBGhvjHvP46CtW5j6POvhYGGo=
 sigs.k8s.io/yaml v1.3.0/go.mod h1:GeOyir5tyXNByN85N/dRIT9es5UQNerPYEKK56eTBm8=

vendor/github.com/emicklei/go-restful/v3/CHANGES.md

@@ -1,6 +1,15 @@
 # Change history of go-restful
 
-## [v3.10.1] - 2022-11-19
+## [v3.11.0] - 2023-08-19
+
+- restored behavior as <= v3.9.0 with option to change path strategy using TrimRightSlashEnabled. 
+
+## [v3.10.2] - 2023-03-09 - DO NOT USE
+
+- introduced MergePathStrategy to be able to revert behaviour of path concatenation to 3.9.0
+  see comment in Readme how to customize this behaviour.
+
+## [v3.10.1] - 2022-11-19 - DO NOT USE
 
 - fix broken 3.10.0 by using path package for joining paths
 

vendor/github.com/emicklei/go-restful/v3/README.md

@@ -79,7 +79,7 @@ func (u UserResource) findUser(request *restful.Request, response *restful.Respo
 - Content encoding (gzip,deflate) of request and response payloads
 - Automatic responses on OPTIONS (using a filter)
 - Automatic CORS request handling (using a filter)
-- API declaration for Swagger UI ([go-restful-openapi](https://github.com/emicklei/go-restful-openapi), see [go-restful-swagger12](https://github.com/emicklei/go-restful-swagger12))
+- API declaration for Swagger UI ([go-restful-openapi](https://github.com/emicklei/go-restful-openapi))
 - Panic recovery to produce HTTP 500, customizable using RecoverHandler(...)
 - Route errors produce HTTP 404/405/406/415 errors, customizable using ServiceErrorHandler(...)
 - Configurable (trace) logging
@@ -96,6 +96,7 @@ There are several hooks to customize the behavior of the go-restful package.
 - Compression
 - Encoders for other serializers
 - Use [jsoniter](https://github.com/json-iterator/go) by building this package using a build tag, e.g. `go build -tags=jsoniter .` 
+- Use the package variable `TrimRightSlashEnabled` (default true) to control the behavior of matching routes that end with a slash `/` 
 
 ## Resources
 
@@ -108,4 +109,4 @@ There are several hooks to customize the behavior of the go-restful package.
 
 Type ```git shortlog -s``` for a full list of contributors.
 
-© 2012 - 2022, http://ernestmicklei.com. MIT License. Contributions are welcome.
+© 2012 - 2023, http://ernestmicklei.com. MIT License. Contributions are welcome.

vendor/github.com/emicklei/go-restful/v3/route.go

@@ -40,7 +40,8 @@ type Route struct {
 	ParameterDocs           []*Parameter
 	ResponseErrors          map[int]ResponseError
 	DefaultResponse         *ResponseError
-	ReadSample, WriteSample interface{} // structs that model an example request or response payload
+	ReadSample, WriteSample interface{}   // structs that model an example request or response payload
+	WriteSamples            []interface{} // if more than one return types is possible (oneof) then this will contain multiple values
 
 	// Extra information used to store custom information about the route.
 	Metadata map[string]interface{}
@@ -164,7 +165,13 @@ func tokenizePath(path string) []string {
 	if "/" == path {
 		return nil
 	}
-	return strings.Split(strings.TrimLeft(path, "/"), "/")
+	if TrimRightSlashEnabled {
+		// 3.9.0
+		return strings.Split(strings.Trim(path, "/"), "/")
+	} else {
+		// 3.10.2
+		return strings.Split(strings.TrimLeft(path, "/"), "/")
+	}
 }
 
 // for debugging
@@ -177,4 +184,8 @@ func (r *Route) EnableContentEncoding(enabled bool) {
 	r.contentEncodingEnabled = &enabled
 }
 
-var TrimRightSlashEnabled = false
+// TrimRightSlashEnabled controls whether
+// - path on route building is using path.Join
+// - the path of the incoming request is trimmed of its slash suffux.
+// Value of true matches the behavior of <= 3.9.0
+var TrimRightSlashEnabled = true

vendor/github.com/emicklei/go-restful/v3/route_builder.go

@@ -31,17 +31,18 @@ type RouteBuilder struct {
 	typeNameHandleFunc TypeNameHandleFunction // required
 
 	// documentation
-	doc                     string
-	notes                   string
-	operation               string
-	readSample, writeSample interface{}
-	parameters              []*Parameter
-	errorMap                map[int]ResponseError
-	defaultResponse         *ResponseError
-	metadata                map[string]interface{}
-	extensions              map[string]interface{}
-	deprecated              bool
-	contentEncodingEnabled  *bool
+	doc                    string
+	notes                  string
+	operation              string
+	readSample             interface{}
+	writeSamples           []interface{}
+	parameters             []*Parameter
+	errorMap               map[int]ResponseError
+	defaultResponse        *ResponseError
+	metadata               map[string]interface{}
+	extensions             map[string]interface{}
+	deprecated             bool
+	contentEncodingEnabled *bool
 }
 
 // Do evaluates each argument with the RouteBuilder itself.
@@ -135,9 +136,9 @@ func (b RouteBuilder) ParameterNamed(name string) (p *Parameter) {
 	return p
 }
 
-// Writes tells what resource type will be written as the response payload. Optional.
-func (b *RouteBuilder) Writes(sample interface{}) *RouteBuilder {
-	b.writeSample = sample
+// Writes tells which one of the resource types will be written as the response payload. Optional.
+func (b *RouteBuilder) Writes(samples ...interface{}) *RouteBuilder {
+	b.writeSamples = samples // oneof
 	return b
 }
 
@@ -342,19 +343,29 @@ func (b *RouteBuilder) Build() Route {
 		ResponseErrors:                   b.errorMap,
 		DefaultResponse:                  b.defaultResponse,
 		ReadSample:                       b.readSample,
-		WriteSample:                      b.writeSample,
+		WriteSamples:                     b.writeSamples,
 		Metadata:                         b.metadata,
 		Deprecated:                       b.deprecated,
 		contentEncodingEnabled:           b.contentEncodingEnabled,
 		allowedMethodsWithoutContentType: b.allowedMethodsWithoutContentType,
 	}
+	// set WriteSample if one specified
+	if len(b.writeSamples) == 1 {
+		route.WriteSample = b.writeSamples[0]
+	}
 	route.Extensions = b.extensions
 	route.postBuild()
 	return route
 }
 
-func concatPath(path1, path2 string) string {
-	return path.Join(path1, path2)
+// merge two paths using the current (package global) merge path strategy.
+func concatPath(rootPath, routePath string) string {
+
+	if TrimRightSlashEnabled {
+		return strings.TrimRight(rootPath, "/") + "/" + strings.TrimLeft(routePath, "/")
+	} else {
+		return path.Join(rootPath, routePath)
+	}
 }
 
 var anonymousFuncCount int32

vendor/github.com/go-logr/logr/slogr/sloghandler.go

@@ -0,0 +1,168 @@
+//go:build go1.21
+// +build go1.21
+
+/*
+Copyright 2023 The logr Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package slogr
+
+import (
+	"context"
+	"log/slog"
+
+	"github.com/go-logr/logr"
+)
+
+type slogHandler struct {
+	// May be nil, in which case all logs get discarded.
+	sink logr.LogSink
+	// Non-nil if sink is non-nil and implements SlogSink.
+	slogSink SlogSink
+
+	// groupPrefix collects values from WithGroup calls. It gets added as
+	// prefix to value keys when handling a log record.
+	groupPrefix string
+
+	// levelBias can be set when constructing the handler to influence the
+	// slog.Level of log records. A positive levelBias reduces the
+	// slog.Level value. slog has no API to influence this value after the
+	// handler got created, so it can only be set indirectly through
+	// Logger.V.
+	levelBias slog.Level
+}
+
+var _ slog.Handler = &slogHandler{}
+
+// groupSeparator is used to concatenate WithGroup names and attribute keys.
+const groupSeparator = "."
+
+// GetLevel is used for black box unit testing.
+func (l *slogHandler) GetLevel() slog.Level {
+	return l.levelBias
+}
+
+func (l *slogHandler) Enabled(ctx context.Context, level slog.Level) bool {
+	return l.sink != nil && (level >= slog.LevelError || l.sink.Enabled(l.levelFromSlog(level)))
+}
+
+func (l *slogHandler) Handle(ctx context.Context, record slog.Record) error {
+	if l.slogSink != nil {
+		// Only adjust verbosity level of log entries < slog.LevelError.
+		if record.Level < slog.LevelError {
+			record.Level -= l.levelBias
+		}
+		return l.slogSink.Handle(ctx, record)
+	}
+
+	// No need to check for nil sink here because Handle will only be called
+	// when Enabled returned true.
+
+	kvList := make([]any, 0, 2*record.NumAttrs())
+	record.Attrs(func(attr slog.Attr) bool {
+		if attr.Key != "" {
+			kvList = append(kvList, l.addGroupPrefix(attr.Key), attr.Value.Resolve().Any())
+		}
+		return true
+	})
+	if record.Level >= slog.LevelError {
+		l.sinkWithCallDepth().Error(nil, record.Message, kvList...)
+	} else {
+		level := l.levelFromSlog(record.Level)
+		l.sinkWithCallDepth().Info(level, record.Message, kvList...)
+	}
+	return nil
+}
+
+// sinkWithCallDepth adjusts the stack unwinding so that when Error or Info
+// are called by Handle, code in slog gets skipped.
+//
+// This offset currently (Go 1.21.0) works for calls through
+// slog.New(NewSlogHandler(...)).  There's no guarantee that the call
+// chain won't change. Wrapping the handler will also break unwinding. It's
+// still better than not adjusting at all....
+//
+// This cannot be done when constructing the handler because NewLogr needs
+// access to the original sink without this adjustment. A second copy would
+// work, but then WithAttrs would have to be called for both of them.
+func (l *slogHandler) sinkWithCallDepth() logr.LogSink {
+	if sink, ok := l.sink.(logr.CallDepthLogSink); ok {
+		return sink.WithCallDepth(2)
+	}
+	return l.sink
+}
+
+func (l *slogHandler) WithAttrs(attrs []slog.Attr) slog.Handler {
+	if l.sink == nil || len(attrs) == 0 {
+		return l
+	}
+
+	copy := *l
+	if l.slogSink != nil {
+		copy.slogSink = l.slogSink.WithAttrs(attrs)
+		copy.sink = copy.slogSink
+	} else {
+		kvList := make([]any, 0, 2*len(attrs))
+		for _, attr := range attrs {
+			if attr.Key != "" {
+				kvList = append(kvList, l.addGroupPrefix(attr.Key), attr.Value.Resolve().Any())
+			}
+		}
+		copy.sink = l.sink.WithValues(kvList...)
+	}
+	return &copy
+}
+
+func (l *slogHandler) WithGroup(name string) slog.Handler {
+	if l.sink == nil {
+		return l
+	}
+	copy := *l
+	if l.slogSink != nil {
+		copy.slogSink = l.slogSink.WithGroup(name)
+		copy.sink = l.slogSink
+	} else {
+		copy.groupPrefix = copy.addGroupPrefix(name)
+	}
+	return &copy
+}
+
+func (l *slogHandler) addGroupPrefix(name string) string {
+	if l.groupPrefix == "" {
+		return name
+	}
+	return l.groupPrefix + groupSeparator + name
+}
+
+// levelFromSlog adjusts the level by the logger's verbosity and negates it.
+// It ensures that the result is >= 0. This is necessary because the result is
+// passed to a logr.LogSink and that API did not historically document whether
+// levels could be negative or what that meant.
+//
+// Some example usage:
+//     logrV0 := getMyLogger()
+//     logrV2 := logrV0.V(2)
+//     slogV2 := slog.New(slogr.NewSlogHandler(logrV2))
+//     slogV2.Debug("msg") // =~ logrV2.V(4) =~ logrV0.V(6)
+//     slogV2.Info("msg")  // =~  logrV2.V(0) =~ logrV0.V(2)
+//     slogv2.Warn("msg")  // =~ logrV2.V(-4) =~ logrV0.V(0)
+func (l *slogHandler) levelFromSlog(level slog.Level) int {
+	result := -level
+	result += l.levelBias // in case the original logr.Logger had a V level
+	if result < 0 {
+		result = 0 // because logr.LogSink doesn't expect negative V levels
+	}
+	return int(result)
+}

vendor/github.com/go-logr/logr/slogr/slogr.go

@@ -0,0 +1,108 @@
+//go:build go1.21
+// +build go1.21
+
+/*
+Copyright 2023 The logr Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package slogr enables usage of a slog.Handler with logr.Logger as front-end
+// API and of a logr.LogSink through the slog.Handler and thus slog.Logger
+// APIs.
+//
+// See the README in the top-level [./logr] package for a discussion of
+// interoperability.
+package slogr
+
+import (
+	"context"
+	"log/slog"
+
+	"github.com/go-logr/logr"
+)
+
+// NewLogr returns a logr.Logger which writes to the slog.Handler.
+//
+// The logr verbosity level is mapped to slog levels such that V(0) becomes
+// slog.LevelInfo and V(4) becomes slog.LevelDebug.
+func NewLogr(handler slog.Handler) logr.Logger {
+	if handler, ok := handler.(*slogHandler); ok {
+		if handler.sink == nil {
+			return logr.Discard()
+		}
+		return logr.New(handler.sink).V(int(handler.levelBias))
+	}
+	return logr.New(&slogSink{handler: handler})
+}
+
+// NewSlogHandler returns a slog.Handler which writes to the same sink as the logr.Logger.
+//
+// The returned logger writes all records with level >= slog.LevelError as
+// error log entries with LogSink.Error, regardless of the verbosity level of
+// the logr.Logger:
+//
+//	logger := <some logr.Logger with 0 as verbosity level>
+//	slog.New(NewSlogHandler(logger.V(10))).Error(...) -> logSink.Error(...)
+//
+// The level of all other records gets reduced by the verbosity
+// level of the logr.Logger and the result is negated. If it happens
+// to be negative, then it gets replaced by zero because a LogSink
+// is not expected to handled negative levels:
+//
+//	slog.New(NewSlogHandler(logger)).Debug(...) -> logger.GetSink().Info(level=4, ...)
+//	slog.New(NewSlogHandler(logger)).Warning(...) -> logger.GetSink().Info(level=0, ...)
+//	slog.New(NewSlogHandler(logger)).Info(...) -> logger.GetSink().Info(level=0, ...)
+//	slog.New(NewSlogHandler(logger.V(4))).Info(...) -> logger.GetSink().Info(level=4, ...)
+func NewSlogHandler(logger logr.Logger) slog.Handler {
+	if sink, ok := logger.GetSink().(*slogSink); ok && logger.GetV() == 0 {
+		return sink.handler
+	}
+
+	handler := &slogHandler{sink: logger.GetSink(), levelBias: slog.Level(logger.GetV())}
+	if slogSink, ok := handler.sink.(SlogSink); ok {
+		handler.slogSink = slogSink
+	}
+	return handler
+}
+
+// SlogSink is an optional interface that a LogSink can implement to support
+// logging through the slog.Logger or slog.Handler APIs better. It then should
+// also support special slog values like slog.Group. When used as a
+// slog.Handler, the advantages are:
+//
+//   - stack unwinding gets avoided in favor of logging the pre-recorded PC,
+//     as intended by slog
+//   - proper grouping of key/value pairs via WithGroup
+//   - verbosity levels > slog.LevelInfo can be recorded
+//   - less overhead
+//
+// Both APIs (logr.Logger and slog.Logger/Handler) then are supported equally
+// well. Developers can pick whatever API suits them better and/or mix
+// packages which use either API in the same binary with a common logging
+// implementation.
+//
+// This interface is necessary because the type implementing the LogSink
+// interface cannot also implement the slog.Handler interface due to the
+// different prototype of the common Enabled method.
+//
+// An implementation could support both interfaces in two different types, but then
+// additional interfaces would be needed to convert between those types in NewLogr
+// and NewSlogHandler.
+type SlogSink interface {
+	logr.LogSink
+
+	Handle(ctx context.Context, record slog.Record) error
+	WithAttrs(attrs []slog.Attr) SlogSink
+	WithGroup(name string) SlogSink
+}

vendor/github.com/go-logr/logr/slogr/slogsink.go

@@ -0,0 +1,122 @@
+//go:build go1.21
+// +build go1.21
+
+/*
+Copyright 2023 The logr Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package slogr
+
+import (
+	"context"
+	"log/slog"
+	"runtime"
+	"time"
+
+	"github.com/go-logr/logr"
+)
+
+var (
+	_ logr.LogSink          = &slogSink{}
+	_ logr.CallDepthLogSink = &slogSink{}
+	_ Underlier             = &slogSink{}
+)
+
+// Underlier is implemented by the LogSink returned by NewLogr.
+type Underlier interface {
+	// GetUnderlying returns the Handler used by the LogSink.
+	GetUnderlying() slog.Handler
+}
+
+const (
+	// nameKey is used to log the `WithName` values as an additional attribute.
+	nameKey = "logger"
+
+	// errKey is used to log the error parameter of Error as an additional attribute.
+	errKey = "err"
+)
+
+type slogSink struct {
+	callDepth int
+	name      string
+	handler   slog.Handler
+}
+
+func (l *slogSink) Init(info logr.RuntimeInfo) {
+	l.callDepth = info.CallDepth
+}
+
+func (l *slogSink) GetUnderlying() slog.Handler {
+	return l.handler
+}
+
+func (l *slogSink) WithCallDepth(depth int) logr.LogSink {
+	newLogger := *l
+	newLogger.callDepth += depth
+	return &newLogger
+}
+
+func (l *slogSink) Enabled(level int) bool {
+	return l.handler.Enabled(context.Background(), slog.Level(-level))
+}
+
+func (l *slogSink) Info(level int, msg string, kvList ...interface{}) {
+	l.log(nil, msg, slog.Level(-level), kvList...)
+}
+
+func (l *slogSink) Error(err error, msg string, kvList ...interface{}) {
+	l.log(err, msg, slog.LevelError, kvList...)
+}
+
+func (l *slogSink) log(err error, msg string, level slog.Level, kvList ...interface{}) {
+	var pcs [1]uintptr
+	// skip runtime.Callers, this function, Info/Error, and all helper functions above that.
+	runtime.Callers(3+l.callDepth, pcs[:])
+
+	record := slog.NewRecord(time.Now(), level, msg, pcs[0])
+	if l.name != "" {
+		record.AddAttrs(slog.String(nameKey, l.name))
+	}
+	if err != nil {
+		record.AddAttrs(slog.Any(errKey, err))
+	}
+	record.Add(kvList...)
+	l.handler.Handle(context.Background(), record)
+}
+
+func (l slogSink) WithName(name string) logr.LogSink {
+	if l.name != "" {
+		l.name = l.name + "/"
+	}
+	l.name += name
+	return &l
+}
+
+func (l slogSink) WithValues(kvList ...interface{}) logr.LogSink {
+	l.handler = l.handler.WithAttrs(kvListToAttrs(kvList...))
+	return &l
+}
+
+func kvListToAttrs(kvList ...interface{}) []slog.Attr {
+	// We don't need the record itself, only its Add method.
+	record := slog.NewRecord(time.Time{}, 0, "", 0)
+	record.Add(kvList...)
+	attrs := make([]slog.Attr, 0, record.NumAttrs())
+	record.Attrs(func(attr slog.Attr) bool {
+		attrs = append(attrs, attr)
+		return true
+	})
+	return attrs
+}

vendor/github.com/go-openapi/jsonpointer/.travis.yml

@@ -1,15 +0,0 @@
-after_success:
-- bash <(curl -s https://codecov.io/bash)
-go:
-- 1.14.x
-- 1.15.x
-install:
-- GO111MODULE=off go get -u gotest.tools/gotestsum
-env:
-- GO111MODULE=on
-language: go
-notifications:
-  slack:
-    secure: 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
-script:
-- gotestsum -f short-verbose -- -race -coverprofile=coverage.txt -covermode=atomic ./...

vendor/github.com/go-openapi/jsonreference/.golangci.yml

@@ -1,8 +1,6 @@
 linters-settings:
   govet:
     check-shadowing: true
-  golint:
-    min-confidence: 0
   gocyclo:
     min-complexity: 30
   maligned:
@@ -12,6 +10,8 @@ linters-settings:
   goconst:
     min-len: 2
     min-occurrences: 4
+  paralleltest:
+    ignore-missing: true
 linters:
   enable-all: true
   disable:
@@ -39,3 +39,12 @@ linters:
     - nestif
     - godot
     - errorlint
+    - varcheck
+    - interfacer
+    - deadcode
+    - golint
+    - ifshort
+    - structcheck
+    - nosnakecase
+    - varnamelen
+    - exhaustruct

vendor/github.com/go-openapi/jsonreference/.travis.yml

@@ -1,24 +0,0 @@
-after_success:
-- bash <(curl -s https://codecov.io/bash)
-go:
-- 1.14.x
-- 1.x
-install:
-- go get gotest.tools/gotestsum
-jobs:
-  include:
-  # include linting job, but only for latest go version and amd64 arch
-  - go: 1.x
-    arch: amd64
-    install:
-      go get github.com/golangci/golangci-lint/cmd/golangci-lint
-    script:
-    - golangci-lint run --new-from-rev master
-env:
-- GO111MODULE=on
-language: go
-notifications:
-  slack:
-    secure: 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
-script:
-- gotestsum -f short-verbose -- -race -coverprofile=coverage.txt -covermode=atomic ./...

vendor/github.com/go-openapi/jsonreference/internal/normalize_url.go

@@ -7,8 +7,8 @@ import (
 )
 
 const (
-	defaultHttpPort  = ":80"
-	defaultHttpsPort = ":443"
+	defaultHTTPPort  = ":80"
+	defaultHTTPSPort = ":443"
 )
 
 // Regular expressions used by the normalizations
@@ -18,18 +18,24 @@ var rxDupSlashes = regexp.MustCompile(`/{2,}`)
 // NormalizeURL will normalize the specified URL
 // This was added to replace a previous call to the no longer maintained purell library:
 // The call that was used looked like the following:
-//   url.Parse(purell.NormalizeURL(parsed, purell.FlagsSafe|purell.FlagRemoveDuplicateSlashes))
+//
+//	url.Parse(purell.NormalizeURL(parsed, purell.FlagsSafe|purell.FlagRemoveDuplicateSlashes))
 //
 // To explain all that was included in the call above, purell.FlagsSafe was really just the following:
-//	  - FlagLowercaseScheme
-//	  - FlagLowercaseHost
-//	  - FlagRemoveDefaultPort
-//	  - FlagRemoveDuplicateSlashes (and this was mixed in with the |)
+//   - FlagLowercaseScheme
+//   - FlagLowercaseHost
+//   - FlagRemoveDefaultPort
+//   - FlagRemoveDuplicateSlashes (and this was mixed in with the |)
+//
+// This also normalizes the URL into its urlencoded form by removing RawPath and RawFragment.
 func NormalizeURL(u *url.URL) {
 	lowercaseScheme(u)
 	lowercaseHost(u)
 	removeDefaultPort(u)
 	removeDuplicateSlashes(u)
+
+	u.RawPath = ""
+	u.RawFragment = ""
 }
 
 func lowercaseScheme(u *url.URL) {
@@ -48,7 +54,7 @@ func removeDefaultPort(u *url.URL) {
 	if len(u.Host) > 0 {
 		scheme := strings.ToLower(u.Scheme)
 		u.Host = rxPort.ReplaceAllStringFunc(u.Host, func(val string) string {
-			if (scheme == "http" && val == defaultHttpPort) || (scheme == "https" && val == defaultHttpsPort) {
+			if (scheme == "http" && val == defaultHTTPPort) || (scheme == "https" && val == defaultHTTPSPort) {
 				return ""
 			}
 			return val

vendor/github.com/go-openapi/swag/.gitattributes

@@ -0,0 +1,2 @@
+# gofmt always uses LF, whereas Git uses CRLF on Windows.
+*.go text eol=lf

vendor/github.com/go-openapi/swag/.golangci.yml

@@ -37,3 +37,18 @@ linters:
     - gci
     - gocognit
     - paralleltest
+    - thelper
+    - ifshort
+    - gomoddirectives
+    - cyclop
+    - forcetypeassert
+    - ireturn
+    - tagliatelle
+    - varnamelen
+    - goimports
+    - tenv
+    - golint
+    - exhaustruct
+    - nilnil
+    - nonamedreturns
+    - nosnakecase

vendor/github.com/go-openapi/swag/.travis.yml

@@ -1,37 +0,0 @@
-after_success:
-- bash <(curl -s https://codecov.io/bash)
-go:
-- 1.14.x
-- 1.x
-arch:
-- amd64
-jobs:
-  include:
-  # include arch ppc, but only for latest go version - skip testing for race
-  - go: 1.x
-    arch: ppc64le
-    install: ~
-    script:
-    - go test -v
-
-  #- go: 1.x
-  #  arch: arm
-  #  install: ~
-  #  script:
-  #  - go test -v
-
-  # include linting job, but only for latest go version and amd64 arch
-  - go: 1.x
-    arch: amd64
-    install:
-      go get github.com/golangci/golangci-lint/cmd/golangci-lint
-    script:
-    - golangci-lint run --new-from-rev master
-install:
-- GO111MODULE=off go get -u gotest.tools/gotestsum
-language: go
-notifications:
-  slack:
-    secure: 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
-script:
-- gotestsum -f short-verbose -- -race -coverprofile=coverage.txt -covermode=atomic ./...

vendor/github.com/go-openapi/swag/doc.go

@@ -17,16 +17,15 @@ Package swag contains a bunch of helper functions for go-openapi and go-swagger
 
 You may also use it standalone for your projects.
 
-  * convert between value and pointers for builtin types
-  * convert from string to builtin types (wraps strconv)
-  * fast json concatenation
-  * search in path
-  * load from file or http
-  * name mangling
-
+  - convert between value and pointers for builtin types
+  - convert from string to builtin types (wraps strconv)
+  - fast json concatenation
+  - search in path
+  - load from file or http
+  - name mangling
 
 This repo has only few dependencies outside of the standard library:
 
-  * YAML utilities depend on gopkg.in/yaml.v2
+  - YAML utilities depend on gopkg.in/yaml.v2
 */
 package swag

vendor/github.com/go-openapi/swag/file.go

@@ -0,0 +1,33 @@
+// Copyright 2015 go-swagger maintainers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package swag
+
+import "mime/multipart"
+
+// File represents an uploaded file.
+type File struct {
+	Data   multipart.File
+	Header *multipart.FileHeader
+}
+
+// Read bytes from the file
+func (f *File) Read(p []byte) (n int, err error) {
+	return f.Data.Read(p)
+}
+
+// Close the file
+func (f *File) Close() error {
+	return f.Data.Close()
+}

vendor/github.com/go-openapi/swag/loading.go

@@ -16,10 +16,11 @@ package swag
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"net/url"
+	"os"
 	"path/filepath"
 	"runtime"
 	"strings"
@@ -40,13 +41,13 @@ var LoadHTTPCustomHeaders = map[string]string{}
 
 // LoadFromFileOrHTTP loads the bytes from a file or a remote http server based on the path passed in
 func LoadFromFileOrHTTP(path string) ([]byte, error) {
-	return LoadStrategy(path, ioutil.ReadFile, loadHTTPBytes(LoadHTTPTimeout))(path)
+	return LoadStrategy(path, os.ReadFile, loadHTTPBytes(LoadHTTPTimeout))(path)
 }
 
 // LoadFromFileOrHTTPWithTimeout loads the bytes from a file or a remote http server based on the path passed in
 // timeout arg allows for per request overriding of the request timeout
 func LoadFromFileOrHTTPWithTimeout(path string, timeout time.Duration) ([]byte, error) {
-	return LoadStrategy(path, ioutil.ReadFile, loadHTTPBytes(timeout))(path)
+	return LoadStrategy(path, os.ReadFile, loadHTTPBytes(timeout))(path)
 }
 
 // LoadStrategy returns a loader function for a given path or uri
@@ -86,7 +87,7 @@ func LoadStrategy(path string, local, remote func(string) ([]byte, error)) func(
 func loadHTTPBytes(timeout time.Duration) func(path string) ([]byte, error) {
 	return func(path string) ([]byte, error) {
 		client := &http.Client{Timeout: timeout}
-		req, err := http.NewRequest("GET", path, nil) // nolint: noctx
+		req, err := http.NewRequest(http.MethodGet, path, nil) //nolint:noctx
 		if err != nil {
 			return nil, err
 		}
@@ -115,6 +116,6 @@ func loadHTTPBytes(timeout time.Duration) func(path string) ([]byte, error) {
 			return nil, fmt.Errorf("could not access document at %q [%s] ", path, resp.Status)
 		}
 
-		return ioutil.ReadAll(resp.Body)
+		return io.ReadAll(resp.Body)
 	}
 }

vendor/github.com/go-openapi/swag/post_go18.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build go1.8
 // +build go1.8
 
 package swag

vendor/github.com/go-openapi/swag/post_go19.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build go1.9
 // +build go1.9
 
 package swag

vendor/github.com/go-openapi/swag/pre_go18.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !go1.8
 // +build !go1.8
 
 package swag

vendor/github.com/go-openapi/swag/pre_go19.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !go1.9
 // +build !go1.9
 
 package swag

vendor/github.com/go-openapi/swag/util.go

@@ -99,10 +99,11 @@ const (
 )
 
 // JoinByFormat joins a string array by a known format (e.g. swagger's collectionFormat attribute):
-//		ssv: space separated value
-//		tsv: tab separated value
-//		pipes: pipe (|) separated value
-//		csv: comma separated value (default)
+//
+//	ssv: space separated value
+//	tsv: tab separated value
+//	pipes: pipe (|) separated value
+//	csv: comma separated value (default)
 func JoinByFormat(data []string, format string) []string {
 	if len(data) == 0 {
 		return data
@@ -124,11 +125,11 @@ func JoinByFormat(data []string, format string) []string {
 }
 
 // SplitByFormat splits a string by a known format:
-//		ssv: space separated value
-//		tsv: tab separated value
-//		pipes: pipe (|) separated value
-//		csv: comma separated value (default)
 //
+//	ssv: space separated value
+//	tsv: tab separated value
+//	pipes: pipe (|) separated value
+//	csv: comma separated value (default)
 func SplitByFormat(data, format string) []string {
 	if data == "" {
 		return nil

vendor/github.com/go-openapi/swag/yaml.go

@@ -22,7 +22,7 @@ import (
 
 	"github.com/mailru/easyjson/jlexer"
 	"github.com/mailru/easyjson/jwriter"
-	yaml "gopkg.in/yaml.v2"
+	yaml "gopkg.in/yaml.v3"
 )
 
 // YAMLMatcher matches yaml
@@ -43,16 +43,126 @@ func YAMLToJSON(data interface{}) (json.RawMessage, error) {
 
 // BytesToYAMLDoc converts a byte slice into a YAML document
 func BytesToYAMLDoc(data []byte) (interface{}, error) {
-	var canary map[interface{}]interface{} // validate this is an object and not a different type
-	if err := yaml.Unmarshal(data, &canary); err != nil {
-		return nil, err
-	}
-
-	var document yaml.MapSlice // preserve order that is present in the document
+	var document yaml.Node // preserve order that is present in the document
 	if err := yaml.Unmarshal(data, &document); err != nil {
 		return nil, err
 	}
-	return document, nil
+	if document.Kind != yaml.DocumentNode || len(document.Content) != 1 || document.Content[0].Kind != yaml.MappingNode {
+		return nil, fmt.Errorf("only YAML documents that are objects are supported")
+	}
+	return &document, nil
+}
+
+func yamlNode(root *yaml.Node) (interface{}, error) {
+	switch root.Kind {
+	case yaml.DocumentNode:
+		return yamlDocument(root)
+	case yaml.SequenceNode:
+		return yamlSequence(root)
+	case yaml.MappingNode:
+		return yamlMapping(root)
+	case yaml.ScalarNode:
+		return yamlScalar(root)
+	case yaml.AliasNode:
+		return yamlNode(root.Alias)
+	default:
+		return nil, fmt.Errorf("unsupported YAML node type: %v", root.Kind)
+	}
+}
+
+func yamlDocument(node *yaml.Node) (interface{}, error) {
+	if len(node.Content) != 1 {
+		return nil, fmt.Errorf("unexpected YAML Document node content length: %d", len(node.Content))
+	}
+	return yamlNode(node.Content[0])
+}
+
+func yamlMapping(node *yaml.Node) (interface{}, error) {
+	m := make(JSONMapSlice, len(node.Content)/2)
+
+	var j int
+	for i := 0; i < len(node.Content); i += 2 {
+		var nmi JSONMapItem
+		k, err := yamlStringScalarC(node.Content[i])
+		if err != nil {
+			return nil, fmt.Errorf("unable to decode YAML map key: %w", err)
+		}
+		nmi.Key = k
+		v, err := yamlNode(node.Content[i+1])
+		if err != nil {
+			return nil, fmt.Errorf("unable to process YAML map value for key %q: %w", k, err)
+		}
+		nmi.Value = v
+		m[j] = nmi
+		j++
+	}
+	return m, nil
+}
+
+func yamlSequence(node *yaml.Node) (interface{}, error) {
+	s := make([]interface{}, 0)
+
+	for i := 0; i < len(node.Content); i++ {
+
+		v, err := yamlNode(node.Content[i])
+		if err != nil {
+			return nil, fmt.Errorf("unable to decode YAML sequence value: %w", err)
+		}
+		s = append(s, v)
+	}
+	return s, nil
+}
+
+const ( // See https://yaml.org/type/
+	yamlStringScalar = "tag:yaml.org,2002:str"
+	yamlIntScalar    = "tag:yaml.org,2002:int"
+	yamlBoolScalar   = "tag:yaml.org,2002:bool"
+	yamlFloatScalar  = "tag:yaml.org,2002:float"
+	yamlTimestamp    = "tag:yaml.org,2002:timestamp"
+	yamlNull         = "tag:yaml.org,2002:null"
+)
+
+func yamlScalar(node *yaml.Node) (interface{}, error) {
+	switch node.LongTag() {
+	case yamlStringScalar:
+		return node.Value, nil
+	case yamlBoolScalar:
+		b, err := strconv.ParseBool(node.Value)
+		if err != nil {
+			return nil, fmt.Errorf("unable to process scalar node. Got %q. Expecting bool content: %w", node.Value, err)
+		}
+		return b, nil
+	case yamlIntScalar:
+		i, err := strconv.ParseInt(node.Value, 10, 64)
+		if err != nil {
+			return nil, fmt.Errorf("unable to process scalar node. Got %q. Expecting integer content: %w", node.Value, err)
+		}
+		return i, nil
+	case yamlFloatScalar:
+		f, err := strconv.ParseFloat(node.Value, 64)
+		if err != nil {
+			return nil, fmt.Errorf("unable to process scalar node. Got %q. Expecting float content: %w", node.Value, err)
+		}
+		return f, nil
+	case yamlTimestamp:
+		return node.Value, nil
+	case yamlNull:
+		return nil, nil
+	default:
+		return nil, fmt.Errorf("YAML tag %q is not supported", node.LongTag())
+	}
+}
+
+func yamlStringScalarC(node *yaml.Node) (string, error) {
+	if node.Kind != yaml.ScalarNode {
+		return "", fmt.Errorf("expecting a string scalar but got %q", node.Kind)
+	}
+	switch node.LongTag() {
+	case yamlStringScalar, yamlIntScalar, yamlFloatScalar:
+		return node.Value, nil
+	default:
+		return "", fmt.Errorf("YAML tag %q is not supported as map key", node.LongTag())
+	}
 }
 
 // JSONMapSlice represent a JSON object, with the order of keys maintained
@@ -105,6 +215,113 @@ func (s *JSONMapSlice) UnmarshalEasyJSON(in *jlexer.Lexer) {
 	*s = result
 }
 
+func (s JSONMapSlice) MarshalYAML() (interface{}, error) {
+	var n yaml.Node
+	n.Kind = yaml.DocumentNode
+	var nodes []*yaml.Node
+	for _, item := range s {
+		nn, err := json2yaml(item.Value)
+		if err != nil {
+			return nil, err
+		}
+		ns := []*yaml.Node{
+			{
+				Kind:  yaml.ScalarNode,
+				Tag:   yamlStringScalar,
+				Value: item.Key,
+			},
+			nn,
+		}
+		nodes = append(nodes, ns...)
+	}
+
+	n.Content = []*yaml.Node{
+		{
+			Kind:    yaml.MappingNode,
+			Content: nodes,
+		},
+	}
+
+	return yaml.Marshal(&n)
+}
+
+func json2yaml(item interface{}) (*yaml.Node, error) {
+	switch val := item.(type) {
+	case JSONMapSlice:
+		var n yaml.Node
+		n.Kind = yaml.MappingNode
+		for i := range val {
+			childNode, err := json2yaml(&val[i].Value)
+			if err != nil {
+				return nil, err
+			}
+			n.Content = append(n.Content, &yaml.Node{
+				Kind:  yaml.ScalarNode,
+				Tag:   yamlStringScalar,
+				Value: val[i].Key,
+			}, childNode)
+		}
+		return &n, nil
+	case map[string]interface{}:
+		var n yaml.Node
+		n.Kind = yaml.MappingNode
+		for k, v := range val {
+			childNode, err := json2yaml(v)
+			if err != nil {
+				return nil, err
+			}
+			n.Content = append(n.Content, &yaml.Node{
+				Kind:  yaml.ScalarNode,
+				Tag:   yamlStringScalar,
+				Value: k,
+			}, childNode)
+		}
+		return &n, nil
+	case []interface{}:
+		var n yaml.Node
+		n.Kind = yaml.SequenceNode
+		for i := range val {
+			childNode, err := json2yaml(val[i])
+			if err != nil {
+				return nil, err
+			}
+			n.Content = append(n.Content, childNode)
+		}
+		return &n, nil
+	case string:
+		return &yaml.Node{
+			Kind:  yaml.ScalarNode,
+			Tag:   yamlStringScalar,
+			Value: val,
+		}, nil
+	case float64:
+		return &yaml.Node{
+			Kind:  yaml.ScalarNode,
+			Tag:   yamlFloatScalar,
+			Value: strconv.FormatFloat(val, 'f', -1, 64),
+		}, nil
+	case int64:
+		return &yaml.Node{
+			Kind:  yaml.ScalarNode,
+			Tag:   yamlIntScalar,
+			Value: strconv.FormatInt(val, 10),
+		}, nil
+	case uint64:
+		return &yaml.Node{
+			Kind:  yaml.ScalarNode,
+			Tag:   yamlIntScalar,
+			Value: strconv.FormatUint(val, 10),
+		}, nil
+	case bool:
+		return &yaml.Node{
+			Kind:  yaml.ScalarNode,
+			Tag:   yamlBoolScalar,
+			Value: strconv.FormatBool(val),
+		}, nil
+	}
+	return nil, nil
+}
+
 // JSONMapItem represents the value of a key in a JSON object held by JSONMapSlice
 type JSONMapItem struct {
 	Key   string
@@ -173,23 +390,10 @@ func transformData(input interface{}) (out interface{}, err error) {
 	}
 
 	switch in := input.(type) {
-	case yaml.MapSlice:
-
-		o := make(JSONMapSlice, len(in))
-		for i, mi := range in {
-			var nmi JSONMapItem
-			if nmi.Key, err = format(mi.Key); err != nil {
-				return nil, err
-			}
-
-			v, ert := transformData(mi.Value)
-			if ert != nil {
-				return nil, ert
-			}
-			nmi.Value = v
-			o[i] = nmi
-		}
-		return o, nil
+	case yaml.Node:
+		return yamlNode(&in)
+	case *yaml.Node:
+		return yamlNode(in)
 	case map[interface{}]interface{}:
 		o := make(JSONMapSlice, 0, len(in))
 		for ke, va := range in {

vendor/github.com/google/gnostic-models/compiler/extensions.go

@@ -24,7 +24,7 @@ import (
 	"github.com/golang/protobuf/ptypes/any"
 	yaml "gopkg.in/yaml.v3"
 
-	extensions "github.com/google/gnostic/extensions"
+	extensions "github.com/google/gnostic-models/extensions"
 )
 
 // ExtensionHandler describes a binary that is called by the compiler to handle specification extensions.

vendor/github.com/google/gnostic-models/compiler/helpers.go

@@ -22,7 +22,7 @@ import (
 
 	"gopkg.in/yaml.v3"
 
-	"github.com/google/gnostic/jsonschema"
+	"github.com/google/gnostic-models/jsonschema"
 )
 
 // compiler helper functions, usually called from generated code

vendor/github.com/google/gnostic-models/extensions/extension.pb.go

@@ -14,8 +14,8 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
-// 	protoc        v3.18.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.19.3
 // source: extensions/extension.proto
 
 package gnostic_extension_v1

vendor/github.com/google/gnostic-models/jsonschema/base.go

@@ -1,3 +1,16 @@
+// Copyright 2017 Google LLC. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
 
 // THIS FILE IS AUTOMATICALLY GENERATED.
 

vendor/github.com/google/gnostic-models/openapiv2/OpenAPIv2.go

@@ -23,7 +23,7 @@ import (
 
 	"gopkg.in/yaml.v3"
 
-	"github.com/google/gnostic/compiler"
+	"github.com/google/gnostic-models/compiler"
 )
 
 // Version returns the package name (and OpenAPI version).

vendor/github.com/google/gnostic-models/openapiv2/OpenAPIv2.pb.go

@@ -16,8 +16,8 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
-// 	protoc        v3.18.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.19.3
 // source: openapiv2/OpenAPIv2.proto
 
 package openapi_v2

vendor/github.com/google/gnostic-models/openapiv2/document.go

@@ -17,7 +17,7 @@ package openapi_v2
 import (
 	"gopkg.in/yaml.v3"
 
-	"github.com/google/gnostic/compiler"
+	"github.com/google/gnostic-models/compiler"
 )
 
 // ParseDocument reads an OpenAPI v2 description from a YAML/JSON representation.

vendor/github.com/google/gnostic-models/openapiv3/OpenAPIv3.go

@@ -23,7 +23,7 @@ import (
 
 	"gopkg.in/yaml.v3"
 
-	"github.com/google/gnostic/compiler"
+	"github.com/google/gnostic-models/compiler"
 )
 
 // Version returns the package name (and OpenAPI version).

vendor/github.com/google/gnostic-models/openapiv3/OpenAPIv3.pb.go

@@ -16,8 +16,8 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
-// 	protoc        v3.18.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.19.3
 // source: openapiv3/OpenAPIv3.proto
 
 package openapi_v3

vendor/github.com/google/gnostic-models/openapiv3/document.go

@@ -17,7 +17,7 @@ package openapi_v3
 import (
 	"gopkg.in/yaml.v3"
 
-	"github.com/google/gnostic/compiler"
+	"github.com/google/gnostic-models/compiler"
 )
 
 // ParseDocument reads an OpenAPI v3 description from a YAML/JSON representation.

vendor/github.com/gorilla/websocket/.gitignore

@@ -0,0 +1,25 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+
+.idea/
+*.iml

vendor/github.com/gorilla/websocket/AUTHORS

@@ -0,0 +1,9 @@
+# This is the official list of Gorilla WebSocket authors for copyright
+# purposes.
+#
+# Please keep the list sorted.
+
+Gary Burd <gary@beagledreams.com>
+Google LLC (https://opensource.google.com/)
+Joachim Bauch <mail@joachim-bauch.de>
+

vendor/github.com/gorilla/websocket/LICENSE

@@ -0,0 +1,22 @@
+Copyright (c) 2013 The Gorilla WebSocket Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+  Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+  Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/gorilla/websocket/README.md

@@ -0,0 +1,39 @@
+# Gorilla WebSocket
+
+[![GoDoc](https://godoc.org/github.com/gorilla/websocket?status.svg)](https://godoc.org/github.com/gorilla/websocket)
+[![CircleCI](https://circleci.com/gh/gorilla/websocket.svg?style=svg)](https://circleci.com/gh/gorilla/websocket)
+
+Gorilla WebSocket is a [Go](http://golang.org/) implementation of the
+[WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol.
+
+
+---
+
+⚠️ **[The Gorilla WebSocket Package is looking for a new maintainer](https://github.com/gorilla/websocket/issues/370)**
+
+---
+
+### Documentation
+
+* [API Reference](https://pkg.go.dev/github.com/gorilla/websocket?tab=doc)
+* [Chat example](https://github.com/gorilla/websocket/tree/master/examples/chat)
+* [Command example](https://github.com/gorilla/websocket/tree/master/examples/command)
+* [Client and server example](https://github.com/gorilla/websocket/tree/master/examples/echo)
+* [File watch example](https://github.com/gorilla/websocket/tree/master/examples/filewatch)
+
+### Status
+
+The Gorilla WebSocket package provides a complete and tested implementation of
+the [WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol. The
+package API is stable.
+
+### Installation
+
+    go get github.com/gorilla/websocket
+
+### Protocol Compliance
+
+The Gorilla WebSocket package passes the server tests in the [Autobahn Test
+Suite](https://github.com/crossbario/autobahn-testsuite) using the application in the [examples/autobahn
+subdirectory](https://github.com/gorilla/websocket/tree/master/examples/autobahn).
+

vendor/github.com/gorilla/websocket/client.go

@@ -0,0 +1,422 @@
+// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"bytes"
+	"context"
+	"crypto/tls"
+	"errors"
+	"io"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"net/http/httptrace"
+	"net/url"
+	"strings"
+	"time"
+)
+
+// ErrBadHandshake is returned when the server response to opening handshake is
+// invalid.
+var ErrBadHandshake = errors.New("websocket: bad handshake")
+
+var errInvalidCompression = errors.New("websocket: invalid compression negotiation")
+
+// NewClient creates a new client connection using the given net connection.
+// The URL u specifies the host and request URI. Use requestHeader to specify
+// the origin (Origin), subprotocols (Sec-WebSocket-Protocol) and cookies
+// (Cookie). Use the response.Header to get the selected subprotocol
+// (Sec-WebSocket-Protocol) and cookies (Set-Cookie).
+//
+// If the WebSocket handshake fails, ErrBadHandshake is returned along with a
+// non-nil *http.Response so that callers can handle redirects, authentication,
+// etc.
+//
+// Deprecated: Use Dialer instead.
+func NewClient(netConn net.Conn, u *url.URL, requestHeader http.Header, readBufSize, writeBufSize int) (c *Conn, response *http.Response, err error) {
+	d := Dialer{
+		ReadBufferSize:  readBufSize,
+		WriteBufferSize: writeBufSize,
+		NetDial: func(net, addr string) (net.Conn, error) {
+			return netConn, nil
+		},
+	}
+	return d.Dial(u.String(), requestHeader)
+}
+
+// A Dialer contains options for connecting to WebSocket server.
+//
+// It is safe to call Dialer's methods concurrently.
+type Dialer struct {
+	// NetDial specifies the dial function for creating TCP connections. If
+	// NetDial is nil, net.Dial is used.
+	NetDial func(network, addr string) (net.Conn, error)
+
+	// NetDialContext specifies the dial function for creating TCP connections. If
+	// NetDialContext is nil, NetDial is used.
+	NetDialContext func(ctx context.Context, network, addr string) (net.Conn, error)
+
+	// NetDialTLSContext specifies the dial function for creating TLS/TCP connections. If
+	// NetDialTLSContext is nil, NetDialContext is used.
+	// If NetDialTLSContext is set, Dial assumes the TLS handshake is done there and
+	// TLSClientConfig is ignored.
+	NetDialTLSContext func(ctx context.Context, network, addr string) (net.Conn, error)
+
+	// Proxy specifies a function to return a proxy for a given
+	// Request. If the function returns a non-nil error, the
+	// request is aborted with the provided error.
+	// If Proxy is nil or returns a nil *URL, no proxy is used.
+	Proxy func(*http.Request) (*url.URL, error)
+
+	// TLSClientConfig specifies the TLS configuration to use with tls.Client.
+	// If nil, the default configuration is used.
+	// If either NetDialTLS or NetDialTLSContext are set, Dial assumes the TLS handshake
+	// is done there and TLSClientConfig is ignored.
+	TLSClientConfig *tls.Config
+
+	// HandshakeTimeout specifies the duration for the handshake to complete.
+	HandshakeTimeout time.Duration
+
+	// ReadBufferSize and WriteBufferSize specify I/O buffer sizes in bytes. If a buffer
+	// size is zero, then a useful default size is used. The I/O buffer sizes
+	// do not limit the size of the messages that can be sent or received.
+	ReadBufferSize, WriteBufferSize int
+
+	// WriteBufferPool is a pool of buffers for write operations. If the value
+	// is not set, then write buffers are allocated to the connection for the
+	// lifetime of the connection.
+	//
+	// A pool is most useful when the application has a modest volume of writes
+	// across a large number of connections.
+	//
+	// Applications should use a single pool for each unique value of
+	// WriteBufferSize.
+	WriteBufferPool BufferPool
+
+	// Subprotocols specifies the client's requested subprotocols.
+	Subprotocols []string
+
+	// EnableCompression specifies if the client should attempt to negotiate
+	// per message compression (RFC 7692). Setting this value to true does not
+	// guarantee that compression will be supported. Currently only "no context
+	// takeover" modes are supported.
+	EnableCompression bool
+
+	// Jar specifies the cookie jar.
+	// If Jar is nil, cookies are not sent in requests and ignored
+	// in responses.
+	Jar http.CookieJar
+}
+
+// Dial creates a new client connection by calling DialContext with a background context.
+func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Response, error) {
+	return d.DialContext(context.Background(), urlStr, requestHeader)
+}
+
+var errMalformedURL = errors.New("malformed ws or wss URL")
+
+func hostPortNoPort(u *url.URL) (hostPort, hostNoPort string) {
+	hostPort = u.Host
+	hostNoPort = u.Host
+	if i := strings.LastIndex(u.Host, ":"); i > strings.LastIndex(u.Host, "]") {
+		hostNoPort = hostNoPort[:i]
+	} else {
+		switch u.Scheme {
+		case "wss":
+			hostPort += ":443"
+		case "https":
+			hostPort += ":443"
+		default:
+			hostPort += ":80"
+		}
+	}
+	return hostPort, hostNoPort
+}
+
+// DefaultDialer is a dialer with all fields set to the default values.
+var DefaultDialer = &Dialer{
+	Proxy:            http.ProxyFromEnvironment,
+	HandshakeTimeout: 45 * time.Second,
+}
+
+// nilDialer is dialer to use when receiver is nil.
+var nilDialer = *DefaultDialer
+
+// DialContext creates a new client connection. Use requestHeader to specify the
+// origin (Origin), subprotocols (Sec-WebSocket-Protocol) and cookies (Cookie).
+// Use the response.Header to get the selected subprotocol
+// (Sec-WebSocket-Protocol) and cookies (Set-Cookie).
+//
+// The context will be used in the request and in the Dialer.
+//
+// If the WebSocket handshake fails, ErrBadHandshake is returned along with a
+// non-nil *http.Response so that callers can handle redirects, authentication,
+// etcetera. The response body may not contain the entire response and does not
+// need to be closed by the application.
+func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader http.Header) (*Conn, *http.Response, error) {
+	if d == nil {
+		d = &nilDialer
+	}
+
+	challengeKey, err := generateChallengeKey()
+	if err != nil {
+		return nil, nil, err
+	}
+
+	u, err := url.Parse(urlStr)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	switch u.Scheme {
+	case "ws":
+		u.Scheme = "http"
+	case "wss":
+		u.Scheme = "https"
+	default:
+		return nil, nil, errMalformedURL
+	}
+
+	if u.User != nil {
+		// User name and password are not allowed in websocket URIs.
+		return nil, nil, errMalformedURL
+	}
+
+	req := &http.Request{
+		Method:     http.MethodGet,
+		URL:        u,
+		Proto:      "HTTP/1.1",
+		ProtoMajor: 1,
+		ProtoMinor: 1,
+		Header:     make(http.Header),
+		Host:       u.Host,
+	}
+	req = req.WithContext(ctx)
+
+	// Set the cookies present in the cookie jar of the dialer
+	if d.Jar != nil {
+		for _, cookie := range d.Jar.Cookies(u) {
+			req.AddCookie(cookie)
+		}
+	}
+
+	// Set the request headers using the capitalization for names and values in
+	// RFC examples. Although the capitalization shouldn't matter, there are
+	// servers that depend on it. The Header.Set method is not used because the
+	// method canonicalizes the header names.
+	req.Header["Upgrade"] = []string{"websocket"}
+	req.Header["Connection"] = []string{"Upgrade"}
+	req.Header["Sec-WebSocket-Key"] = []string{challengeKey}
+	req.Header["Sec-WebSocket-Version"] = []string{"13"}
+	if len(d.Subprotocols) > 0 {
+		req.Header["Sec-WebSocket-Protocol"] = []string{strings.Join(d.Subprotocols, ", ")}
+	}
+	for k, vs := range requestHeader {
+		switch {
+		case k == "Host":
+			if len(vs) > 0 {
+				req.Host = vs[0]
+			}
+		case k == "Upgrade" ||
+			k == "Connection" ||
+			k == "Sec-Websocket-Key" ||
+			k == "Sec-Websocket-Version" ||
+			k == "Sec-Websocket-Extensions" ||
+			(k == "Sec-Websocket-Protocol" && len(d.Subprotocols) > 0):
+			return nil, nil, errors.New("websocket: duplicate header not allowed: " + k)
+		case k == "Sec-Websocket-Protocol":
+			req.Header["Sec-WebSocket-Protocol"] = vs
+		default:
+			req.Header[k] = vs
+		}
+	}
+
+	if d.EnableCompression {
+		req.Header["Sec-WebSocket-Extensions"] = []string{"permessage-deflate; server_no_context_takeover; client_no_context_takeover"}
+	}
+
+	if d.HandshakeTimeout != 0 {
+		var cancel func()
+		ctx, cancel = context.WithTimeout(ctx, d.HandshakeTimeout)
+		defer cancel()
+	}
+
+	// Get network dial function.
+	var netDial func(network, add string) (net.Conn, error)
+
+	switch u.Scheme {
+	case "http":
+		if d.NetDialContext != nil {
+			netDial = func(network, addr string) (net.Conn, error) {
+				return d.NetDialContext(ctx, network, addr)
+			}
+		} else if d.NetDial != nil {
+			netDial = d.NetDial
+		}
+	case "https":
+		if d.NetDialTLSContext != nil {
+			netDial = func(network, addr string) (net.Conn, error) {
+				return d.NetDialTLSContext(ctx, network, addr)
+			}
+		} else if d.NetDialContext != nil {
+			netDial = func(network, addr string) (net.Conn, error) {
+				return d.NetDialContext(ctx, network, addr)
+			}
+		} else if d.NetDial != nil {
+			netDial = d.NetDial
+		}
+	default:
+		return nil, nil, errMalformedURL
+	}
+
+	if netDial == nil {
+		netDialer := &net.Dialer{}
+		netDial = func(network, addr string) (net.Conn, error) {
+			return netDialer.DialContext(ctx, network, addr)
+		}
+	}
+
+	// If needed, wrap the dial function to set the connection deadline.
+	if deadline, ok := ctx.Deadline(); ok {
+		forwardDial := netDial
+		netDial = func(network, addr string) (net.Conn, error) {
+			c, err := forwardDial(network, addr)
+			if err != nil {
+				return nil, err
+			}
+			err = c.SetDeadline(deadline)
+			if err != nil {
+				c.Close()
+				return nil, err
+			}
+			return c, nil
+		}
+	}
+
+	// If needed, wrap the dial function to connect through a proxy.
+	if d.Proxy != nil {
+		proxyURL, err := d.Proxy(req)
+		if err != nil {
+			return nil, nil, err
+		}
+		if proxyURL != nil {
+			dialer, err := proxy_FromURL(proxyURL, netDialerFunc(netDial))
+			if err != nil {
+				return nil, nil, err
+			}
+			netDial = dialer.Dial
+		}
+	}
+
+	hostPort, hostNoPort := hostPortNoPort(u)
+	trace := httptrace.ContextClientTrace(ctx)
+	if trace != nil && trace.GetConn != nil {
+		trace.GetConn(hostPort)
+	}
+
+	netConn, err := netDial("tcp", hostPort)
+	if trace != nil && trace.GotConn != nil {
+		trace.GotConn(httptrace.GotConnInfo{
+			Conn: netConn,
+		})
+	}
+	if err != nil {
+		return nil, nil, err
+	}
+
+	defer func() {
+		if netConn != nil {
+			netConn.Close()
+		}
+	}()
+
+	if u.Scheme == "https" && d.NetDialTLSContext == nil {
+		// If NetDialTLSContext is set, assume that the TLS handshake has already been done
+
+		cfg := cloneTLSConfig(d.TLSClientConfig)
+		if cfg.ServerName == "" {
+			cfg.ServerName = hostNoPort
+		}
+		tlsConn := tls.Client(netConn, cfg)
+		netConn = tlsConn
+
+		if trace != nil && trace.TLSHandshakeStart != nil {
+			trace.TLSHandshakeStart()
+		}
+		err := doHandshake(ctx, tlsConn, cfg)
+		if trace != nil && trace.TLSHandshakeDone != nil {
+			trace.TLSHandshakeDone(tlsConn.ConnectionState(), err)
+		}
+
+		if err != nil {
+			return nil, nil, err
+		}
+	}
+
+	conn := newConn(netConn, false, d.ReadBufferSize, d.WriteBufferSize, d.WriteBufferPool, nil, nil)
+
+	if err := req.Write(netConn); err != nil {
+		return nil, nil, err
+	}
+
+	if trace != nil && trace.GotFirstResponseByte != nil {
+		if peek, err := conn.br.Peek(1); err == nil && len(peek) == 1 {
+			trace.GotFirstResponseByte()
+		}
+	}
+
+	resp, err := http.ReadResponse(conn.br, req)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	if d.Jar != nil {
+		if rc := resp.Cookies(); len(rc) > 0 {
+			d.Jar.SetCookies(u, rc)
+		}
+	}
+
+	if resp.StatusCode != 101 ||
+		!tokenListContainsValue(resp.Header, "Upgrade", "websocket") ||
+		!tokenListContainsValue(resp.Header, "Connection", "upgrade") ||
+		resp.Header.Get("Sec-Websocket-Accept") != computeAcceptKey(challengeKey) {
+		// Before closing the network connection on return from this
+		// function, slurp up some of the response to aid application
+		// debugging.
+		buf := make([]byte, 1024)
+		n, _ := io.ReadFull(resp.Body, buf)
+		resp.Body = ioutil.NopCloser(bytes.NewReader(buf[:n]))
+		return nil, resp, ErrBadHandshake
+	}
+
+	for _, ext := range parseExtensions(resp.Header) {
+		if ext[""] != "permessage-deflate" {
+			continue
+		}
+		_, snct := ext["server_no_context_takeover"]
+		_, cnct := ext["client_no_context_takeover"]
+		if !snct || !cnct {
+			return nil, resp, errInvalidCompression
+		}
+		conn.newCompressionWriter = compressNoContextTakeover
+		conn.newDecompressionReader = decompressNoContextTakeover
+		break
+	}
+
+	resp.Body = ioutil.NopCloser(bytes.NewReader([]byte{}))
+	conn.subprotocol = resp.Header.Get("Sec-Websocket-Protocol")
+
+	netConn.SetDeadline(time.Time{})
+	netConn = nil // to avoid close in defer.
+	return conn, resp, nil
+}
+
+func cloneTLSConfig(cfg *tls.Config) *tls.Config {
+	if cfg == nil {
+		return &tls.Config{}
+	}
+	return cfg.Clone()
+}

vendor/github.com/gorilla/websocket/compression.go

@@ -0,0 +1,148 @@
+// Copyright 2017 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"compress/flate"
+	"errors"
+	"io"
+	"strings"
+	"sync"
+)
+
+const (
+	minCompressionLevel     = -2 // flate.HuffmanOnly not defined in Go < 1.6
+	maxCompressionLevel     = flate.BestCompression
+	defaultCompressionLevel = 1
+)
+
+var (
+	flateWriterPools [maxCompressionLevel - minCompressionLevel + 1]sync.Pool
+	flateReaderPool  = sync.Pool{New: func() interface{} {
+		return flate.NewReader(nil)
+	}}
+)
+
+func decompressNoContextTakeover(r io.Reader) io.ReadCloser {
+	const tail =
+	// Add four bytes as specified in RFC
+	"\x00\x00\xff\xff" +
+		// Add final block to squelch unexpected EOF error from flate reader.
+		"\x01\x00\x00\xff\xff"
+
+	fr, _ := flateReaderPool.Get().(io.ReadCloser)
+	fr.(flate.Resetter).Reset(io.MultiReader(r, strings.NewReader(tail)), nil)
+	return &flateReadWrapper{fr}
+}
+
+func isValidCompressionLevel(level int) bool {
+	return minCompressionLevel <= level && level <= maxCompressionLevel
+}
+
+func compressNoContextTakeover(w io.WriteCloser, level int) io.WriteCloser {
+	p := &flateWriterPools[level-minCompressionLevel]
+	tw := &truncWriter{w: w}
+	fw, _ := p.Get().(*flate.Writer)
+	if fw == nil {
+		fw, _ = flate.NewWriter(tw, level)
+	} else {
+		fw.Reset(tw)
+	}
+	return &flateWriteWrapper{fw: fw, tw: tw, p: p}
+}
+
+// truncWriter is an io.Writer that writes all but the last four bytes of the
+// stream to another io.Writer.
+type truncWriter struct {
+	w io.WriteCloser
+	n int
+	p [4]byte
+}
+
+func (w *truncWriter) Write(p []byte) (int, error) {
+	n := 0
+
+	// fill buffer first for simplicity.
+	if w.n < len(w.p) {
+		n = copy(w.p[w.n:], p)
+		p = p[n:]
+		w.n += n
+		if len(p) == 0 {
+			return n, nil
+		}
+	}
+
+	m := len(p)
+	if m > len(w.p) {
+		m = len(w.p)
+	}
+
+	if nn, err := w.w.Write(w.p[:m]); err != nil {
+		return n + nn, err
+	}
+
+	copy(w.p[:], w.p[m:])
+	copy(w.p[len(w.p)-m:], p[len(p)-m:])
+	nn, err := w.w.Write(p[:len(p)-m])
+	return n + nn, err
+}
+
+type flateWriteWrapper struct {
+	fw *flate.Writer
+	tw *truncWriter
+	p  *sync.Pool
+}
+
+func (w *flateWriteWrapper) Write(p []byte) (int, error) {
+	if w.fw == nil {
+		return 0, errWriteClosed
+	}
+	return w.fw.Write(p)
+}
+
+func (w *flateWriteWrapper) Close() error {
+	if w.fw == nil {
+		return errWriteClosed
+	}
+	err1 := w.fw.Flush()
+	w.p.Put(w.fw)
+	w.fw = nil
+	if w.tw.p != [4]byte{0, 0, 0xff, 0xff} {
+		return errors.New("websocket: internal error, unexpected bytes at end of flate stream")
+	}
+	err2 := w.tw.w.Close()
+	if err1 != nil {
+		return err1
+	}
+	return err2
+}
+
+type flateReadWrapper struct {
+	fr io.ReadCloser
+}
+
+func (r *flateReadWrapper) Read(p []byte) (int, error) {
+	if r.fr == nil {
+		return 0, io.ErrClosedPipe
+	}
+	n, err := r.fr.Read(p)
+	if err == io.EOF {
+		// Preemptively place the reader back in the pool. This helps with
+		// scenarios where the application does not call NextReader() soon after
+		// this final read.
+		r.Close()
+	}
+	return n, err
+}
+
+func (r *flateReadWrapper) Close() error {
+	if r.fr == nil {
+		return io.ErrClosedPipe
+	}
+	err := r.fr.Close()
+	flateReaderPool.Put(r.fr)
+	r.fr = nil
+	return err
+}

vendor/github.com/gorilla/websocket/doc.go

@@ -0,0 +1,227 @@
+// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package websocket implements the WebSocket protocol defined in RFC 6455.
+//
+// Overview
+//
+// The Conn type represents a WebSocket connection. A server application calls
+// the Upgrader.Upgrade method from an HTTP request handler to get a *Conn:
+//
+//  var upgrader = websocket.Upgrader{
+//      ReadBufferSize:  1024,
+//      WriteBufferSize: 1024,
+//  }
+//
+//  func handler(w http.ResponseWriter, r *http.Request) {
+//      conn, err := upgrader.Upgrade(w, r, nil)
+//      if err != nil {
+//          log.Println(err)
+//          return
+//      }
+//      ... Use conn to send and receive messages.
+//  }
+//
+// Call the connection's WriteMessage and ReadMessage methods to send and
+// receive messages as a slice of bytes. This snippet of code shows how to echo
+// messages using these methods:
+//
+//  for {
+//      messageType, p, err := conn.ReadMessage()
+//      if err != nil {
+//          log.Println(err)
+//          return
+//      }
+//      if err := conn.WriteMessage(messageType, p); err != nil {
+//          log.Println(err)
+//          return
+//      }
+//  }
+//
+// In above snippet of code, p is a []byte and messageType is an int with value
+// websocket.BinaryMessage or websocket.TextMessage.
+//
+// An application can also send and receive messages using the io.WriteCloser
+// and io.Reader interfaces. To send a message, call the connection NextWriter
+// method to get an io.WriteCloser, write the message to the writer and close
+// the writer when done. To receive a message, call the connection NextReader
+// method to get an io.Reader and read until io.EOF is returned. This snippet
+// shows how to echo messages using the NextWriter and NextReader methods:
+//
+//  for {
+//      messageType, r, err := conn.NextReader()
+//      if err != nil {
+//          return
+//      }
+//      w, err := conn.NextWriter(messageType)
+//      if err != nil {
+//          return err
+//      }
+//      if _, err := io.Copy(w, r); err != nil {
+//          return err
+//      }
+//      if err := w.Close(); err != nil {
+//          return err
+//      }
+//  }
+//
+// Data Messages
+//
+// The WebSocket protocol distinguishes between text and binary data messages.
+// Text messages are interpreted as UTF-8 encoded text. The interpretation of
+// binary messages is left to the application.
+//
+// This package uses the TextMessage and BinaryMessage integer constants to
+// identify the two data message types. The ReadMessage and NextReader methods
+// return the type of the received message. The messageType argument to the
+// WriteMessage and NextWriter methods specifies the type of a sent message.
+//
+// It is the application's responsibility to ensure that text messages are
+// valid UTF-8 encoded text.
+//
+// Control Messages
+//
+// The WebSocket protocol defines three types of control messages: close, ping
+// and pong. Call the connection WriteControl, WriteMessage or NextWriter
+// methods to send a control message to the peer.
+//
+// Connections handle received close messages by calling the handler function
+// set with the SetCloseHandler method and by returning a *CloseError from the
+// NextReader, ReadMessage or the message Read method. The default close
+// handler sends a close message to the peer.
+//
+// Connections handle received ping messages by calling the handler function
+// set with the SetPingHandler method. The default ping handler sends a pong
+// message to the peer.
+//
+// Connections handle received pong messages by calling the handler function
+// set with the SetPongHandler method. The default pong handler does nothing.
+// If an application sends ping messages, then the application should set a
+// pong handler to receive the corresponding pong.
+//
+// The control message handler functions are called from the NextReader,
+// ReadMessage and message reader Read methods. The default close and ping
+// handlers can block these methods for a short time when the handler writes to
+// the connection.
+//
+// The application must read the connection to process close, ping and pong
+// messages sent from the peer. If the application is not otherwise interested
+// in messages from the peer, then the application should start a goroutine to
+// read and discard messages from the peer. A simple example is:
+//
+//  func readLoop(c *websocket.Conn) {
+//      for {
+//          if _, _, err := c.NextReader(); err != nil {
+//              c.Close()
+//              break
+//          }
+//      }
+//  }
+//
+// Concurrency
+//
+// Connections support one concurrent reader and one concurrent writer.
+//
+// Applications are responsible for ensuring that no more than one goroutine
+// calls the write methods (NextWriter, SetWriteDeadline, WriteMessage,
+// WriteJSON, EnableWriteCompression, SetCompressionLevel) concurrently and
+// that no more than one goroutine calls the read methods (NextReader,
+// SetReadDeadline, ReadMessage, ReadJSON, SetPongHandler, SetPingHandler)
+// concurrently.
+//
+// The Close and WriteControl methods can be called concurrently with all other
+// methods.
+//
+// Origin Considerations
+//
+// Web browsers allow Javascript applications to open a WebSocket connection to
+// any host. It's up to the server to enforce an origin policy using the Origin
+// request header sent by the browser.
+//
+// The Upgrader calls the function specified in the CheckOrigin field to check
+// the origin. If the CheckOrigin function returns false, then the Upgrade
+// method fails the WebSocket handshake with HTTP status 403.
+//
+// If the CheckOrigin field is nil, then the Upgrader uses a safe default: fail
+// the handshake if the Origin request header is present and the Origin host is
+// not equal to the Host request header.
+//
+// The deprecated package-level Upgrade function does not perform origin
+// checking. The application is responsible for checking the Origin header
+// before calling the Upgrade function.
+//
+// Buffers
+//
+// Connections buffer network input and output to reduce the number
+// of system calls when reading or writing messages.
+//
+// Write buffers are also used for constructing WebSocket frames. See RFC 6455,
+// Section 5 for a discussion of message framing. A WebSocket frame header is
+// written to the network each time a write buffer is flushed to the network.
+// Decreasing the size of the write buffer can increase the amount of framing
+// overhead on the connection.
+//
+// The buffer sizes in bytes are specified by the ReadBufferSize and
+// WriteBufferSize fields in the Dialer and Upgrader. The Dialer uses a default
+// size of 4096 when a buffer size field is set to zero. The Upgrader reuses
+// buffers created by the HTTP server when a buffer size field is set to zero.
+// The HTTP server buffers have a size of 4096 at the time of this writing.
+//
+// The buffer sizes do not limit the size of a message that can be read or
+// written by a connection.
+//
+// Buffers are held for the lifetime of the connection by default. If the
+// Dialer or Upgrader WriteBufferPool field is set, then a connection holds the
+// write buffer only when writing a message.
+//
+// Applications should tune the buffer sizes to balance memory use and
+// performance. Increasing the buffer size uses more memory, but can reduce the
+// number of system calls to read or write the network. In the case of writing,
+// increasing the buffer size can reduce the number of frame headers written to
+// the network.
+//
+// Some guidelines for setting buffer parameters are:
+//
+// Limit the buffer sizes to the maximum expected message size. Buffers larger
+// than the largest message do not provide any benefit.
+//
+// Depending on the distribution of message sizes, setting the buffer size to
+// a value less than the maximum expected message size can greatly reduce memory
+// use with a small impact on performance. Here's an example: If 99% of the
+// messages are smaller than 256 bytes and the maximum message size is 512
+// bytes, then a buffer size of 256 bytes will result in 1.01 more system calls
+// than a buffer size of 512 bytes. The memory savings is 50%.
+//
+// A write buffer pool is useful when the application has a modest number
+// writes over a large number of connections. when buffers are pooled, a larger
+// buffer size has a reduced impact on total memory use and has the benefit of
+// reducing system calls and frame overhead.
+//
+// Compression EXPERIMENTAL
+//
+// Per message compression extensions (RFC 7692) are experimentally supported
+// by this package in a limited capacity. Setting the EnableCompression option
+// to true in Dialer or Upgrader will attempt to negotiate per message deflate
+// support.
+//
+//  var upgrader = websocket.Upgrader{
+//      EnableCompression: true,
+//  }
+//
+// If compression was successfully negotiated with the connection's peer, any
+// message received in compressed form will be automatically decompressed.
+// All Read methods will return uncompressed bytes.
+//
+// Per message compression of messages written to a connection can be enabled
+// or disabled by calling the corresponding Conn method:
+//
+//  conn.EnableWriteCompression(false)
+//
+// Currently this package does not support compression with "context takeover".
+// This means that messages must be compressed and decompressed in isolation,
+// without retaining sliding window or dictionary state across messages. For
+// more details refer to RFC 7692.
+//
+// Use of compression is experimental and may result in decreased performance.
+package websocket

vendor/github.com/gorilla/websocket/join.go

@@ -0,0 +1,42 @@
+// Copyright 2019 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"io"
+	"strings"
+)
+
+// JoinMessages concatenates received messages to create a single io.Reader.
+// The string term is appended to each message. The returned reader does not
+// support concurrent calls to the Read method.
+func JoinMessages(c *Conn, term string) io.Reader {
+	return &joinReader{c: c, term: term}
+}
+
+type joinReader struct {
+	c    *Conn
+	term string
+	r    io.Reader
+}
+
+func (r *joinReader) Read(p []byte) (int, error) {
+	if r.r == nil {
+		var err error
+		_, r.r, err = r.c.NextReader()
+		if err != nil {
+			return 0, err
+		}
+		if r.term != "" {
+			r.r = io.MultiReader(r.r, strings.NewReader(r.term))
+		}
+	}
+	n, err := r.r.Read(p)
+	if err == io.EOF {
+		err = nil
+		r.r = nil
+	}
+	return n, err
+}

vendor/github.com/gorilla/websocket/json.go

@@ -0,0 +1,60 @@
+// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"encoding/json"
+	"io"
+)
+
+// WriteJSON writes the JSON encoding of v as a message.
+//
+// Deprecated: Use c.WriteJSON instead.
+func WriteJSON(c *Conn, v interface{}) error {
+	return c.WriteJSON(v)
+}
+
+// WriteJSON writes the JSON encoding of v as a message.
+//
+// See the documentation for encoding/json Marshal for details about the
+// conversion of Go values to JSON.
+func (c *Conn) WriteJSON(v interface{}) error {
+	w, err := c.NextWriter(TextMessage)
+	if err != nil {
+		return err
+	}
+	err1 := json.NewEncoder(w).Encode(v)
+	err2 := w.Close()
+	if err1 != nil {
+		return err1
+	}
+	return err2
+}
+
+// ReadJSON reads the next JSON-encoded message from the connection and stores
+// it in the value pointed to by v.
+//
+// Deprecated: Use c.ReadJSON instead.
+func ReadJSON(c *Conn, v interface{}) error {
+	return c.ReadJSON(v)
+}
+
+// ReadJSON reads the next JSON-encoded message from the connection and stores
+// it in the value pointed to by v.
+//
+// See the documentation for the encoding/json Unmarshal function for details
+// about the conversion of JSON to a Go value.
+func (c *Conn) ReadJSON(v interface{}) error {
+	_, r, err := c.NextReader()
+	if err != nil {
+		return err
+	}
+	err = json.NewDecoder(r).Decode(v)
+	if err == io.EOF {
+		// One value is expected in the message.
+		err = io.ErrUnexpectedEOF
+	}
+	return err
+}

vendor/github.com/gorilla/websocket/mask.go

@@ -0,0 +1,55 @@
+// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved.  Use of
+// this source code is governed by a BSD-style license that can be found in the
+// LICENSE file.
+
+//go:build !appengine
+// +build !appengine
+
+package websocket
+
+import "unsafe"
+
+const wordSize = int(unsafe.Sizeof(uintptr(0)))
+
+func maskBytes(key [4]byte, pos int, b []byte) int {
+	// Mask one byte at a time for small buffers.
+	if len(b) < 2*wordSize {
+		for i := range b {
+			b[i] ^= key[pos&3]
+			pos++
+		}
+		return pos & 3
+	}
+
+	// Mask one byte at a time to word boundary.
+	if n := int(uintptr(unsafe.Pointer(&b[0]))) % wordSize; n != 0 {
+		n = wordSize - n
+		for i := range b[:n] {
+			b[i] ^= key[pos&3]
+			pos++
+		}
+		b = b[n:]
+	}
+
+	// Create aligned word size key.
+	var k [wordSize]byte
+	for i := range k {
+		k[i] = key[(pos+i)&3]
+	}
+	kw := *(*uintptr)(unsafe.Pointer(&k))
+
+	// Mask one word at a time.
+	n := (len(b) / wordSize) * wordSize
+	for i := 0; i < n; i += wordSize {
+		*(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&b[0])) + uintptr(i))) ^= kw
+	}
+
+	// Mask one byte at a time for remaining bytes.
+	b = b[n:]
+	for i := range b {
+		b[i] ^= key[pos&3]
+		pos++
+	}
+
+	return pos & 3
+}

vendor/github.com/gorilla/websocket/mask_safe.go

@@ -0,0 +1,16 @@
+// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved.  Use of
+// this source code is governed by a BSD-style license that can be found in the
+// LICENSE file.
+
+//go:build appengine
+// +build appengine
+
+package websocket
+
+func maskBytes(key [4]byte, pos int, b []byte) int {
+	for i := range b {
+		b[i] ^= key[pos&3]
+		pos++
+	}
+	return pos & 3
+}

vendor/github.com/gorilla/websocket/prepared.go

@@ -0,0 +1,102 @@
+// Copyright 2017 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"bytes"
+	"net"
+	"sync"
+	"time"
+)
+
+// PreparedMessage caches on the wire representations of a message payload.
+// Use PreparedMessage to efficiently send a message payload to multiple
+// connections. PreparedMessage is especially useful when compression is used
+// because the CPU and memory expensive compression operation can be executed
+// once for a given set of compression options.
+type PreparedMessage struct {
+	messageType int
+	data        []byte
+	mu          sync.Mutex
+	frames      map[prepareKey]*preparedFrame
+}
+
+// prepareKey defines a unique set of options to cache prepared frames in PreparedMessage.
+type prepareKey struct {
+	isServer         bool
+	compress         bool
+	compressionLevel int
+}
+
+// preparedFrame contains data in wire representation.
+type preparedFrame struct {
+	once sync.Once
+	data []byte
+}
+
+// NewPreparedMessage returns an initialized PreparedMessage. You can then send
+// it to connection using WritePreparedMessage method. Valid wire
+// representation will be calculated lazily only once for a set of current
+// connection options.
+func NewPreparedMessage(messageType int, data []byte) (*PreparedMessage, error) {
+	pm := &PreparedMessage{
+		messageType: messageType,
+		frames:      make(map[prepareKey]*preparedFrame),
+		data:        data,
+	}
+
+	// Prepare a plain server frame.
+	_, frameData, err := pm.frame(prepareKey{isServer: true, compress: false})
+	if err != nil {
+		return nil, err
+	}
+
+	// To protect against caller modifying the data argument, remember the data
+	// copied to the plain server frame.
+	pm.data = frameData[len(frameData)-len(data):]
+	return pm, nil
+}
+
+func (pm *PreparedMessage) frame(key prepareKey) (int, []byte, error) {
+	pm.mu.Lock()
+	frame, ok := pm.frames[key]
+	if !ok {
+		frame = &preparedFrame{}
+		pm.frames[key] = frame
+	}
+	pm.mu.Unlock()
+
+	var err error
+	frame.once.Do(func() {
+		// Prepare a frame using a 'fake' connection.
+		// TODO: Refactor code in conn.go to allow more direct construction of
+		// the frame.
+		mu := make(chan struct{}, 1)
+		mu <- struct{}{}
+		var nc prepareConn
+		c := &Conn{
+			conn:                   &nc,
+			mu:                     mu,
+			isServer:               key.isServer,
+			compressionLevel:       key.compressionLevel,
+			enableWriteCompression: true,
+			writeBuf:               make([]byte, defaultWriteBufferSize+maxFrameHeaderSize),
+		}
+		if key.compress {
+			c.newCompressionWriter = compressNoContextTakeover
+		}
+		err = c.WriteMessage(pm.messageType, pm.data)
+		frame.data = nc.buf.Bytes()
+	})
+	return pm.messageType, frame.data, err
+}
+
+type prepareConn struct {
+	buf bytes.Buffer
+	net.Conn
+}
+
+func (pc *prepareConn) Write(p []byte) (int, error)        { return pc.buf.Write(p) }
+func (pc *prepareConn) SetWriteDeadline(t time.Time) error { return nil }

vendor/github.com/gorilla/websocket/proxy.go

@@ -0,0 +1,77 @@
+// Copyright 2017 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"bufio"
+	"encoding/base64"
+	"errors"
+	"net"
+	"net/http"
+	"net/url"
+	"strings"
+)
+
+type netDialerFunc func(network, addr string) (net.Conn, error)
+
+func (fn netDialerFunc) Dial(network, addr string) (net.Conn, error) {
+	return fn(network, addr)
+}
+
+func init() {
+	proxy_RegisterDialerType("http", func(proxyURL *url.URL, forwardDialer proxy_Dialer) (proxy_Dialer, error) {
+		return &httpProxyDialer{proxyURL: proxyURL, forwardDial: forwardDialer.Dial}, nil
+	})
+}
+
+type httpProxyDialer struct {
+	proxyURL    *url.URL
+	forwardDial func(network, addr string) (net.Conn, error)
+}
+
+func (hpd *httpProxyDialer) Dial(network string, addr string) (net.Conn, error) {
+	hostPort, _ := hostPortNoPort(hpd.proxyURL)
+	conn, err := hpd.forwardDial(network, hostPort)
+	if err != nil {
+		return nil, err
+	}
+
+	connectHeader := make(http.Header)
+	if user := hpd.proxyURL.User; user != nil {
+		proxyUser := user.Username()
+		if proxyPassword, passwordSet := user.Password(); passwordSet {
+			credential := base64.StdEncoding.EncodeToString([]byte(proxyUser + ":" + proxyPassword))
+			connectHeader.Set("Proxy-Authorization", "Basic "+credential)
+		}
+	}
+
+	connectReq := &http.Request{
+		Method: http.MethodConnect,
+		URL:    &url.URL{Opaque: addr},
+		Host:   addr,
+		Header: connectHeader,
+	}
+
+	if err := connectReq.Write(conn); err != nil {
+		conn.Close()
+		return nil, err
+	}
+
+	// Read response. It's OK to use and discard buffered reader here becaue
+	// the remote server does not speak until spoken to.
+	br := bufio.NewReader(conn)
+	resp, err := http.ReadResponse(br, connectReq)
+	if err != nil {
+		conn.Close()
+		return nil, err
+	}
+
+	if resp.StatusCode != 200 {
+		conn.Close()
+		f := strings.SplitN(resp.Status, " ", 2)
+		return nil, errors.New(f[1])
+	}
+	return conn, nil
+}

vendor/github.com/gorilla/websocket/server.go

@@ -0,0 +1,365 @@
+// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"bufio"
+	"errors"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+)
+
+// HandshakeError describes an error with the handshake from the peer.
+type HandshakeError struct {
+	message string
+}
+
+func (e HandshakeError) Error() string { return e.message }
+
+// Upgrader specifies parameters for upgrading an HTTP connection to a
+// WebSocket connection.
+//
+// It is safe to call Upgrader's methods concurrently.
+type Upgrader struct {
+	// HandshakeTimeout specifies the duration for the handshake to complete.
+	HandshakeTimeout time.Duration
+
+	// ReadBufferSize and WriteBufferSize specify I/O buffer sizes in bytes. If a buffer
+	// size is zero, then buffers allocated by the HTTP server are used. The
+	// I/O buffer sizes do not limit the size of the messages that can be sent
+	// or received.
+	ReadBufferSize, WriteBufferSize int
+
+	// WriteBufferPool is a pool of buffers for write operations. If the value
+	// is not set, then write buffers are allocated to the connection for the
+	// lifetime of the connection.
+	//
+	// A pool is most useful when the application has a modest volume of writes
+	// across a large number of connections.
+	//
+	// Applications should use a single pool for each unique value of
+	// WriteBufferSize.
+	WriteBufferPool BufferPool
+
+	// Subprotocols specifies the server's supported protocols in order of
+	// preference. If this field is not nil, then the Upgrade method negotiates a
+	// subprotocol by selecting the first match in this list with a protocol
+	// requested by the client. If there's no match, then no protocol is
+	// negotiated (the Sec-Websocket-Protocol header is not included in the
+	// handshake response).
+	Subprotocols []string
+
+	// Error specifies the function for generating HTTP error responses. If Error
+	// is nil, then http.Error is used to generate the HTTP response.
+	Error func(w http.ResponseWriter, r *http.Request, status int, reason error)
+
+	// CheckOrigin returns true if the request Origin header is acceptable. If
+	// CheckOrigin is nil, then a safe default is used: return false if the
+	// Origin request header is present and the origin host is not equal to
+	// request Host header.
+	//
+	// A CheckOrigin function should carefully validate the request origin to
+	// prevent cross-site request forgery.
+	CheckOrigin func(r *http.Request) bool
+
+	// EnableCompression specify if the server should attempt to negotiate per
+	// message compression (RFC 7692). Setting this value to true does not
+	// guarantee that compression will be supported. Currently only "no context
+	// takeover" modes are supported.
+	EnableCompression bool
+}
+
+func (u *Upgrader) returnError(w http.ResponseWriter, r *http.Request, status int, reason string) (*Conn, error) {
+	err := HandshakeError{reason}
+	if u.Error != nil {
+		u.Error(w, r, status, err)
+	} else {
+		w.Header().Set("Sec-Websocket-Version", "13")
+		http.Error(w, http.StatusText(status), status)
+	}
+	return nil, err
+}
+
+// checkSameOrigin returns true if the origin is not set or is equal to the request host.
+func checkSameOrigin(r *http.Request) bool {
+	origin := r.Header["Origin"]
+	if len(origin) == 0 {
+		return true
+	}
+	u, err := url.Parse(origin[0])
+	if err != nil {
+		return false
+	}
+	return equalASCIIFold(u.Host, r.Host)
+}
+
+func (u *Upgrader) selectSubprotocol(r *http.Request, responseHeader http.Header) string {
+	if u.Subprotocols != nil {
+		clientProtocols := Subprotocols(r)
+		for _, serverProtocol := range u.Subprotocols {
+			for _, clientProtocol := range clientProtocols {
+				if clientProtocol == serverProtocol {
+					return clientProtocol
+				}
+			}
+		}
+	} else if responseHeader != nil {
+		return responseHeader.Get("Sec-Websocket-Protocol")
+	}
+	return ""
+}
+
+// Upgrade upgrades the HTTP server connection to the WebSocket protocol.
+//
+// The responseHeader is included in the response to the client's upgrade
+// request. Use the responseHeader to specify cookies (Set-Cookie). To specify
+// subprotocols supported by the server, set Upgrader.Subprotocols directly.
+//
+// If the upgrade fails, then Upgrade replies to the client with an HTTP error
+// response.
+func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeader http.Header) (*Conn, error) {
+	const badHandshake = "websocket: the client is not using the websocket protocol: "
+
+	if !tokenListContainsValue(r.Header, "Connection", "upgrade") {
+		return u.returnError(w, r, http.StatusBadRequest, badHandshake+"'upgrade' token not found in 'Connection' header")
+	}
+
+	if !tokenListContainsValue(r.Header, "Upgrade", "websocket") {
+		return u.returnError(w, r, http.StatusBadRequest, badHandshake+"'websocket' token not found in 'Upgrade' header")
+	}
+
+	if r.Method != http.MethodGet {
+		return u.returnError(w, r, http.StatusMethodNotAllowed, badHandshake+"request method is not GET")
+	}
+
+	if !tokenListContainsValue(r.Header, "Sec-Websocket-Version", "13") {
+		return u.returnError(w, r, http.StatusBadRequest, "websocket: unsupported version: 13 not found in 'Sec-Websocket-Version' header")
+	}
+
+	if _, ok := responseHeader["Sec-Websocket-Extensions"]; ok {
+		return u.returnError(w, r, http.StatusInternalServerError, "websocket: application specific 'Sec-WebSocket-Extensions' headers are unsupported")
+	}
+
+	checkOrigin := u.CheckOrigin
+	if checkOrigin == nil {
+		checkOrigin = checkSameOrigin
+	}
+	if !checkOrigin(r) {
+		return u.returnError(w, r, http.StatusForbidden, "websocket: request origin not allowed by Upgrader.CheckOrigin")
+	}
+
+	challengeKey := r.Header.Get("Sec-Websocket-Key")
+	if challengeKey == "" {
+		return u.returnError(w, r, http.StatusBadRequest, "websocket: not a websocket handshake: 'Sec-WebSocket-Key' header is missing or blank")
+	}
+
+	subprotocol := u.selectSubprotocol(r, responseHeader)
+
+	// Negotiate PMCE
+	var compress bool
+	if u.EnableCompression {
+		for _, ext := range parseExtensions(r.Header) {
+			if ext[""] != "permessage-deflate" {
+				continue
+			}
+			compress = true
+			break
+		}
+	}
+
+	h, ok := w.(http.Hijacker)
+	if !ok {
+		return u.returnError(w, r, http.StatusInternalServerError, "websocket: response does not implement http.Hijacker")
+	}
+	var brw *bufio.ReadWriter
+	netConn, brw, err := h.Hijack()
+	if err != nil {
+		return u.returnError(w, r, http.StatusInternalServerError, err.Error())
+	}
+
+	if brw.Reader.Buffered() > 0 {
+		netConn.Close()
+		return nil, errors.New("websocket: client sent data before handshake is complete")
+	}
+
+	var br *bufio.Reader
+	if u.ReadBufferSize == 0 && bufioReaderSize(netConn, brw.Reader) > 256 {
+		// Reuse hijacked buffered reader as connection reader.
+		br = brw.Reader
+	}
+
+	buf := bufioWriterBuffer(netConn, brw.Writer)
+
+	var writeBuf []byte
+	if u.WriteBufferPool == nil && u.WriteBufferSize == 0 && len(buf) >= maxFrameHeaderSize+256 {
+		// Reuse hijacked write buffer as connection buffer.
+		writeBuf = buf
+	}
+
+	c := newConn(netConn, true, u.ReadBufferSize, u.WriteBufferSize, u.WriteBufferPool, br, writeBuf)
+	c.subprotocol = subprotocol
+
+	if compress {
+		c.newCompressionWriter = compressNoContextTakeover
+		c.newDecompressionReader = decompressNoContextTakeover
+	}
+
+	// Use larger of hijacked buffer and connection write buffer for header.
+	p := buf
+	if len(c.writeBuf) > len(p) {
+		p = c.writeBuf
+	}
+	p = p[:0]
+
+	p = append(p, "HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: "...)
+	p = append(p, computeAcceptKey(challengeKey)...)
+	p = append(p, "\r\n"...)
+	if c.subprotocol != "" {
+		p = append(p, "Sec-WebSocket-Protocol: "...)
+		p = append(p, c.subprotocol...)
+		p = append(p, "\r\n"...)
+	}
+	if compress {
+		p = append(p, "Sec-WebSocket-Extensions: permessage-deflate; server_no_context_takeover; client_no_context_takeover\r\n"...)
+	}
+	for k, vs := range responseHeader {
+		if k == "Sec-Websocket-Protocol" {
+			continue
+		}
+		for _, v := range vs {
+			p = append(p, k...)
+			p = append(p, ": "...)
+			for i := 0; i < len(v); i++ {
+				b := v[i]
+				if b <= 31 {
+					// prevent response splitting.
+					b = ' '
+				}
+				p = append(p, b)
+			}
+			p = append(p, "\r\n"...)
+		}
+	}
+	p = append(p, "\r\n"...)
+
+	// Clear deadlines set by HTTP server.
+	netConn.SetDeadline(time.Time{})
+
+	if u.HandshakeTimeout > 0 {
+		netConn.SetWriteDeadline(time.Now().Add(u.HandshakeTimeout))
+	}
+	if _, err = netConn.Write(p); err != nil {
+		netConn.Close()
+		return nil, err
+	}
+	if u.HandshakeTimeout > 0 {
+		netConn.SetWriteDeadline(time.Time{})
+	}
+
+	return c, nil
+}
+
+// Upgrade upgrades the HTTP server connection to the WebSocket protocol.
+//
+// Deprecated: Use websocket.Upgrader instead.
+//
+// Upgrade does not perform origin checking. The application is responsible for
+// checking the Origin header before calling Upgrade. An example implementation
+// of the same origin policy check is:
+//
+//	if req.Header.Get("Origin") != "http://"+req.Host {
+//		http.Error(w, "Origin not allowed", http.StatusForbidden)
+//		return
+//	}
+//
+// If the endpoint supports subprotocols, then the application is responsible
+// for negotiating the protocol used on the connection. Use the Subprotocols()
+// function to get the subprotocols requested by the client. Use the
+// Sec-Websocket-Protocol response header to specify the subprotocol selected
+// by the application.
+//
+// The responseHeader is included in the response to the client's upgrade
+// request. Use the responseHeader to specify cookies (Set-Cookie) and the
+// negotiated subprotocol (Sec-Websocket-Protocol).
+//
+// The connection buffers IO to the underlying network connection. The
+// readBufSize and writeBufSize parameters specify the size of the buffers to
+// use. Messages can be larger than the buffers.
+//
+// If the request is not a valid WebSocket handshake, then Upgrade returns an
+// error of type HandshakeError. Applications should handle this error by
+// replying to the client with an HTTP error response.
+func Upgrade(w http.ResponseWriter, r *http.Request, responseHeader http.Header, readBufSize, writeBufSize int) (*Conn, error) {
+	u := Upgrader{ReadBufferSize: readBufSize, WriteBufferSize: writeBufSize}
+	u.Error = func(w http.ResponseWriter, r *http.Request, status int, reason error) {
+		// don't return errors to maintain backwards compatibility
+	}
+	u.CheckOrigin = func(r *http.Request) bool {
+		// allow all connections by default
+		return true
+	}
+	return u.Upgrade(w, r, responseHeader)
+}
+
+// Subprotocols returns the subprotocols requested by the client in the
+// Sec-Websocket-Protocol header.
+func Subprotocols(r *http.Request) []string {
+	h := strings.TrimSpace(r.Header.Get("Sec-Websocket-Protocol"))
+	if h == "" {
+		return nil
+	}
+	protocols := strings.Split(h, ",")
+	for i := range protocols {
+		protocols[i] = strings.TrimSpace(protocols[i])
+	}
+	return protocols
+}
+
+// IsWebSocketUpgrade returns true if the client requested upgrade to the
+// WebSocket protocol.
+func IsWebSocketUpgrade(r *http.Request) bool {
+	return tokenListContainsValue(r.Header, "Connection", "upgrade") &&
+		tokenListContainsValue(r.Header, "Upgrade", "websocket")
+}
+
+// bufioReaderSize size returns the size of a bufio.Reader.
+func bufioReaderSize(originalReader io.Reader, br *bufio.Reader) int {
+	// This code assumes that peek on a reset reader returns
+	// bufio.Reader.buf[:0].
+	// TODO: Use bufio.Reader.Size() after Go 1.10
+	br.Reset(originalReader)
+	if p, err := br.Peek(0); err == nil {
+		return cap(p)
+	}
+	return 0
+}
+
+// writeHook is an io.Writer that records the last slice passed to it vio
+// io.Writer.Write.
+type writeHook struct {
+	p []byte
+}
+
+func (wh *writeHook) Write(p []byte) (int, error) {
+	wh.p = p
+	return len(p), nil
+}
+
+// bufioWriterBuffer grabs the buffer from a bufio.Writer.
+func bufioWriterBuffer(originalWriter io.Writer, bw *bufio.Writer) []byte {
+	// This code assumes that bufio.Writer.buf[:1] is passed to the
+	// bufio.Writer's underlying writer.
+	var wh writeHook
+	bw.Reset(&wh)
+	bw.WriteByte(0)
+	bw.Flush()
+
+	bw.Reset(originalWriter)
+
+	return wh.p[:cap(wh.p)]
+}

vendor/github.com/gorilla/websocket/tls_handshake.go

@@ -0,0 +1,21 @@
+//go:build go1.17
+// +build go1.17
+
+package websocket
+
+import (
+	"context"
+	"crypto/tls"
+)
+
+func doHandshake(ctx context.Context, tlsConn *tls.Conn, cfg *tls.Config) error {
+	if err := tlsConn.HandshakeContext(ctx); err != nil {
+		return err
+	}
+	if !cfg.InsecureSkipVerify {
+		if err := tlsConn.VerifyHostname(cfg.ServerName); err != nil {
+			return err
+		}
+	}
+	return nil
+}

vendor/github.com/gorilla/websocket/tls_handshake_116.go

@@ -0,0 +1,21 @@
+//go:build !go1.17
+// +build !go1.17
+
+package websocket
+
+import (
+	"context"
+	"crypto/tls"
+)
+
+func doHandshake(ctx context.Context, tlsConn *tls.Conn, cfg *tls.Config) error {
+	if err := tlsConn.Handshake(); err != nil {
+		return err
+	}
+	if !cfg.InsecureSkipVerify {
+		if err := tlsConn.VerifyHostname(cfg.ServerName); err != nil {
+			return err
+		}
+	}
+	return nil
+}

vendor/github.com/gorilla/websocket/util.go

@@ -0,0 +1,283 @@
+// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"crypto/rand"
+	"crypto/sha1"
+	"encoding/base64"
+	"io"
+	"net/http"
+	"strings"
+	"unicode/utf8"
+)
+
+var keyGUID = []byte("258EAFA5-E914-47DA-95CA-C5AB0DC85B11")
+
+func computeAcceptKey(challengeKey string) string {
+	h := sha1.New()
+	h.Write([]byte(challengeKey))
+	h.Write(keyGUID)
+	return base64.StdEncoding.EncodeToString(h.Sum(nil))
+}
+
+func generateChallengeKey() (string, error) {
+	p := make([]byte, 16)
+	if _, err := io.ReadFull(rand.Reader, p); err != nil {
+		return "", err
+	}
+	return base64.StdEncoding.EncodeToString(p), nil
+}
+
+// Token octets per RFC 2616.
+var isTokenOctet = [256]bool{
+	'!':  true,
+	'#':  true,
+	'$':  true,
+	'%':  true,
+	'&':  true,
+	'\'': true,
+	'*':  true,
+	'+':  true,
+	'-':  true,
+	'.':  true,
+	'0':  true,
+	'1':  true,
+	'2':  true,
+	'3':  true,
+	'4':  true,
+	'5':  true,
+	'6':  true,
+	'7':  true,
+	'8':  true,
+	'9':  true,
+	'A':  true,
+	'B':  true,
+	'C':  true,
+	'D':  true,
+	'E':  true,
+	'F':  true,
+	'G':  true,
+	'H':  true,
+	'I':  true,
+	'J':  true,
+	'K':  true,
+	'L':  true,
+	'M':  true,
+	'N':  true,
+	'O':  true,
+	'P':  true,
+	'Q':  true,
+	'R':  true,
+	'S':  true,
+	'T':  true,
+	'U':  true,
+	'W':  true,
+	'V':  true,
+	'X':  true,
+	'Y':  true,
+	'Z':  true,
+	'^':  true,
+	'_':  true,
+	'`':  true,
+	'a':  true,
+	'b':  true,
+	'c':  true,
+	'd':  true,
+	'e':  true,
+	'f':  true,
+	'g':  true,
+	'h':  true,
+	'i':  true,
+	'j':  true,
+	'k':  true,
+	'l':  true,
+	'm':  true,
+	'n':  true,
+	'o':  true,
+	'p':  true,
+	'q':  true,
+	'r':  true,
+	's':  true,
+	't':  true,
+	'u':  true,
+	'v':  true,
+	'w':  true,
+	'x':  true,
+	'y':  true,
+	'z':  true,
+	'|':  true,
+	'~':  true,
+}
+
+// skipSpace returns a slice of the string s with all leading RFC 2616 linear
+// whitespace removed.
+func skipSpace(s string) (rest string) {
+	i := 0
+	for ; i < len(s); i++ {
+		if b := s[i]; b != ' ' && b != '\t' {
+			break
+		}
+	}
+	return s[i:]
+}
+
+// nextToken returns the leading RFC 2616 token of s and the string following
+// the token.
+func nextToken(s string) (token, rest string) {
+	i := 0
+	for ; i < len(s); i++ {
+		if !isTokenOctet[s[i]] {
+			break
+		}
+	}
+	return s[:i], s[i:]
+}
+
+// nextTokenOrQuoted returns the leading token or quoted string per RFC 2616
+// and the string following the token or quoted string.
+func nextTokenOrQuoted(s string) (value string, rest string) {
+	if !strings.HasPrefix(s, "\"") {
+		return nextToken(s)
+	}
+	s = s[1:]
+	for i := 0; i < len(s); i++ {
+		switch s[i] {
+		case '"':
+			return s[:i], s[i+1:]
+		case '\\':
+			p := make([]byte, len(s)-1)
+			j := copy(p, s[:i])
+			escape := true
+			for i = i + 1; i < len(s); i++ {
+				b := s[i]
+				switch {
+				case escape:
+					escape = false
+					p[j] = b
+					j++
+				case b == '\\':
+					escape = true
+				case b == '"':
+					return string(p[:j]), s[i+1:]
+				default:
+					p[j] = b
+					j++
+				}
+			}
+			return "", ""
+		}
+	}
+	return "", ""
+}
+
+// equalASCIIFold returns true if s is equal to t with ASCII case folding as
+// defined in RFC 4790.
+func equalASCIIFold(s, t string) bool {
+	for s != "" && t != "" {
+		sr, size := utf8.DecodeRuneInString(s)
+		s = s[size:]
+		tr, size := utf8.DecodeRuneInString(t)
+		t = t[size:]
+		if sr == tr {
+			continue
+		}
+		if 'A' <= sr && sr <= 'Z' {
+			sr = sr + 'a' - 'A'
+		}
+		if 'A' <= tr && tr <= 'Z' {
+			tr = tr + 'a' - 'A'
+		}
+		if sr != tr {
+			return false
+		}
+	}
+	return s == t
+}
+
+// tokenListContainsValue returns true if the 1#token header with the given
+// name contains a token equal to value with ASCII case folding.
+func tokenListContainsValue(header http.Header, name string, value string) bool {
+headers:
+	for _, s := range header[name] {
+		for {
+			var t string
+			t, s = nextToken(skipSpace(s))
+			if t == "" {
+				continue headers
+			}
+			s = skipSpace(s)
+			if s != "" && s[0] != ',' {
+				continue headers
+			}
+			if equalASCIIFold(t, value) {
+				return true
+			}
+			if s == "" {
+				continue headers
+			}
+			s = s[1:]
+		}
+	}
+	return false
+}
+
+// parseExtensions parses WebSocket extensions from a header.
+func parseExtensions(header http.Header) []map[string]string {
+	// From RFC 6455:
+	//
+	//  Sec-WebSocket-Extensions = extension-list
+	//  extension-list = 1#extension
+	//  extension = extension-token *( ";" extension-param )
+	//  extension-token = registered-token
+	//  registered-token = token
+	//  extension-param = token [ "=" (token | quoted-string) ]
+	//     ;When using the quoted-string syntax variant, the value
+	//     ;after quoted-string unescaping MUST conform to the
+	//     ;'token' ABNF.
+
+	var result []map[string]string
+headers:
+	for _, s := range header["Sec-Websocket-Extensions"] {
+		for {
+			var t string
+			t, s = nextToken(skipSpace(s))
+			if t == "" {
+				continue headers
+			}
+			ext := map[string]string{"": t}
+			for {
+				s = skipSpace(s)
+				if !strings.HasPrefix(s, ";") {
+					break
+				}
+				var k string
+				k, s = nextToken(skipSpace(s[1:]))
+				if k == "" {
+					continue headers
+				}
+				s = skipSpace(s)
+				var v string
+				if strings.HasPrefix(s, "=") {
+					v, s = nextTokenOrQuoted(skipSpace(s[1:]))
+					s = skipSpace(s)
+				}
+				if s != "" && s[0] != ',' && s[0] != ';' {
+					continue headers
+				}
+				ext[k] = v
+			}
+			if s != "" && s[0] != ',' {
+				continue headers
+			}
+			result = append(result, ext)
+			if s == "" {
+				continue headers
+			}
+			s = s[1:]
+		}
+	}
+	return result
+}

vendor/github.com/gorilla/websocket/x_net_proxy.go

@@ -0,0 +1,473 @@
+// Code generated by golang.org/x/tools/cmd/bundle. DO NOT EDIT.
+//go:generate bundle -o x_net_proxy.go golang.org/x/net/proxy
+
+// Package proxy provides support for a variety of protocols to proxy network
+// data.
+//
+
+package websocket
+
+import (
+	"errors"
+	"io"
+	"net"
+	"net/url"
+	"os"
+	"strconv"
+	"strings"
+	"sync"
+)
+
+type proxy_direct struct{}
+
+// Direct is a direct proxy: one that makes network connections directly.
+var proxy_Direct = proxy_direct{}
+
+func (proxy_direct) Dial(network, addr string) (net.Conn, error) {
+	return net.Dial(network, addr)
+}
+
+// A PerHost directs connections to a default Dialer unless the host name
+// requested matches one of a number of exceptions.
+type proxy_PerHost struct {
+	def, bypass proxy_Dialer
+
+	bypassNetworks []*net.IPNet
+	bypassIPs      []net.IP
+	bypassZones    []string
+	bypassHosts    []string
+}
+
+// NewPerHost returns a PerHost Dialer that directs connections to either
+// defaultDialer or bypass, depending on whether the connection matches one of
+// the configured rules.
+func proxy_NewPerHost(defaultDialer, bypass proxy_Dialer) *proxy_PerHost {
+	return &proxy_PerHost{
+		def:    defaultDialer,
+		bypass: bypass,
+	}
+}
+
+// Dial connects to the address addr on the given network through either
+// defaultDialer or bypass.
+func (p *proxy_PerHost) Dial(network, addr string) (c net.Conn, err error) {
+	host, _, err := net.SplitHostPort(addr)
+	if err != nil {
+		return nil, err
+	}
+
+	return p.dialerForRequest(host).Dial(network, addr)
+}
+
+func (p *proxy_PerHost) dialerForRequest(host string) proxy_Dialer {
+	if ip := net.ParseIP(host); ip != nil {
+		for _, net := range p.bypassNetworks {
+			if net.Contains(ip) {
+				return p.bypass
+			}
+		}
+		for _, bypassIP := range p.bypassIPs {
+			if bypassIP.Equal(ip) {
+				return p.bypass
+			}
+		}
+		return p.def
+	}
+
+	for _, zone := range p.bypassZones {
+		if strings.HasSuffix(host, zone) {
+			return p.bypass
+		}
+		if host == zone[1:] {
+			// For a zone ".example.com", we match "example.com"
+			// too.
+			return p.bypass
+		}
+	}
+	for _, bypassHost := range p.bypassHosts {
+		if bypassHost == host {
+			return p.bypass
+		}
+	}
+	return p.def
+}
+
+// AddFromString parses a string that contains comma-separated values
+// specifying hosts that should use the bypass proxy. Each value is either an
+// IP address, a CIDR range, a zone (*.example.com) or a host name
+// (localhost). A best effort is made to parse the string and errors are
+// ignored.
+func (p *proxy_PerHost) AddFromString(s string) {
+	hosts := strings.Split(s, ",")
+	for _, host := range hosts {
+		host = strings.TrimSpace(host)
+		if len(host) == 0 {
+			continue
+		}
+		if strings.Contains(host, "/") {
+			// We assume that it's a CIDR address like 127.0.0.0/8
+			if _, net, err := net.ParseCIDR(host); err == nil {
+				p.AddNetwork(net)
+			}
+			continue
+		}
+		if ip := net.ParseIP(host); ip != nil {
+			p.AddIP(ip)
+			continue
+		}
+		if strings.HasPrefix(host, "*.") {
+			p.AddZone(host[1:])
+			continue
+		}
+		p.AddHost(host)
+	}
+}
+
+// AddIP specifies an IP address that will use the bypass proxy. Note that
+// this will only take effect if a literal IP address is dialed. A connection
+// to a named host will never match an IP.
+func (p *proxy_PerHost) AddIP(ip net.IP) {
+	p.bypassIPs = append(p.bypassIPs, ip)
+}
+
+// AddNetwork specifies an IP range that will use the bypass proxy. Note that
+// this will only take effect if a literal IP address is dialed. A connection
+// to a named host will never match.
+func (p *proxy_PerHost) AddNetwork(net *net.IPNet) {
+	p.bypassNetworks = append(p.bypassNetworks, net)
+}
+
+// AddZone specifies a DNS suffix that will use the bypass proxy. A zone of
+// "example.com" matches "example.com" and all of its subdomains.
+func (p *proxy_PerHost) AddZone(zone string) {
+	if strings.HasSuffix(zone, ".") {
+		zone = zone[:len(zone)-1]
+	}
+	if !strings.HasPrefix(zone, ".") {
+		zone = "." + zone
+	}
+	p.bypassZones = append(p.bypassZones, zone)
+}
+
+// AddHost specifies a host name that will use the bypass proxy.
+func (p *proxy_PerHost) AddHost(host string) {
+	if strings.HasSuffix(host, ".") {
+		host = host[:len(host)-1]
+	}
+	p.bypassHosts = append(p.bypassHosts, host)
+}
+
+// A Dialer is a means to establish a connection.
+type proxy_Dialer interface {
+	// Dial connects to the given address via the proxy.
+	Dial(network, addr string) (c net.Conn, err error)
+}
+
+// Auth contains authentication parameters that specific Dialers may require.
+type proxy_Auth struct {
+	User, Password string
+}
+
+// FromEnvironment returns the dialer specified by the proxy related variables in
+// the environment.
+func proxy_FromEnvironment() proxy_Dialer {
+	allProxy := proxy_allProxyEnv.Get()
+	if len(allProxy) == 0 {
+		return proxy_Direct
+	}
+
+	proxyURL, err := url.Parse(allProxy)
+	if err != nil {
+		return proxy_Direct
+	}
+	proxy, err := proxy_FromURL(proxyURL, proxy_Direct)
+	if err != nil {
+		return proxy_Direct
+	}
+
+	noProxy := proxy_noProxyEnv.Get()
+	if len(noProxy) == 0 {
+		return proxy
+	}
+
+	perHost := proxy_NewPerHost(proxy, proxy_Direct)
+	perHost.AddFromString(noProxy)
+	return perHost
+}
+
+// proxySchemes is a map from URL schemes to a function that creates a Dialer
+// from a URL with such a scheme.
+var proxy_proxySchemes map[string]func(*url.URL, proxy_Dialer) (proxy_Dialer, error)
+
+// RegisterDialerType takes a URL scheme and a function to generate Dialers from
+// a URL with that scheme and a forwarding Dialer. Registered schemes are used
+// by FromURL.
+func proxy_RegisterDialerType(scheme string, f func(*url.URL, proxy_Dialer) (proxy_Dialer, error)) {
+	if proxy_proxySchemes == nil {
+		proxy_proxySchemes = make(map[string]func(*url.URL, proxy_Dialer) (proxy_Dialer, error))
+	}
+	proxy_proxySchemes[scheme] = f
+}
+
+// FromURL returns a Dialer given a URL specification and an underlying
+// Dialer for it to make network requests.
+func proxy_FromURL(u *url.URL, forward proxy_Dialer) (proxy_Dialer, error) {
+	var auth *proxy_Auth
+	if u.User != nil {
+		auth = new(proxy_Auth)
+		auth.User = u.User.Username()
+		if p, ok := u.User.Password(); ok {
+			auth.Password = p
+		}
+	}
+
+	switch u.Scheme {
+	case "socks5":
+		return proxy_SOCKS5("tcp", u.Host, auth, forward)
+	}
+
+	// If the scheme doesn't match any of the built-in schemes, see if it
+	// was registered by another package.
+	if proxy_proxySchemes != nil {
+		if f, ok := proxy_proxySchemes[u.Scheme]; ok {
+			return f(u, forward)
+		}
+	}
+
+	return nil, errors.New("proxy: unknown scheme: " + u.Scheme)
+}
+
+var (
+	proxy_allProxyEnv = &proxy_envOnce{
+		names: []string{"ALL_PROXY", "all_proxy"},
+	}
+	proxy_noProxyEnv = &proxy_envOnce{
+		names: []string{"NO_PROXY", "no_proxy"},
+	}
+)
+
+// envOnce looks up an environment variable (optionally by multiple
+// names) once. It mitigates expensive lookups on some platforms
+// (e.g. Windows).
+// (Borrowed from net/http/transport.go)
+type proxy_envOnce struct {
+	names []string
+	once  sync.Once
+	val   string
+}
+
+func (e *proxy_envOnce) Get() string {
+	e.once.Do(e.init)
+	return e.val
+}
+
+func (e *proxy_envOnce) init() {
+	for _, n := range e.names {
+		e.val = os.Getenv(n)
+		if e.val != "" {
+			return
+		}
+	}
+}
+
+// SOCKS5 returns a Dialer that makes SOCKSv5 connections to the given address
+// with an optional username and password. See RFC 1928 and RFC 1929.
+func proxy_SOCKS5(network, addr string, auth *proxy_Auth, forward proxy_Dialer) (proxy_Dialer, error) {
+	s := &proxy_socks5{
+		network: network,
+		addr:    addr,
+		forward: forward,
+	}
+	if auth != nil {
+		s.user = auth.User
+		s.password = auth.Password
+	}
+
+	return s, nil
+}
+
+type proxy_socks5 struct {
+	user, password string
+	network, addr  string
+	forward        proxy_Dialer
+}
+
+const proxy_socks5Version = 5
+
+const (
+	proxy_socks5AuthNone     = 0
+	proxy_socks5AuthPassword = 2
+)
+
+const proxy_socks5Connect = 1
+
+const (
+	proxy_socks5IP4    = 1
+	proxy_socks5Domain = 3
+	proxy_socks5IP6    = 4
+)
+
+var proxy_socks5Errors = []string{
+	"",
+	"general failure",
+	"connection forbidden",
+	"network unreachable",
+	"host unreachable",
+	"connection refused",
+	"TTL expired",
+	"command not supported",
+	"address type not supported",
+}
+
+// Dial connects to the address addr on the given network via the SOCKS5 proxy.
+func (s *proxy_socks5) Dial(network, addr string) (net.Conn, error) {
+	switch network {
+	case "tcp", "tcp6", "tcp4":
+	default:
+		return nil, errors.New("proxy: no support for SOCKS5 proxy connections of type " + network)
+	}
+
+	conn, err := s.forward.Dial(s.network, s.addr)
+	if err != nil {
+		return nil, err
+	}
+	if err := s.connect(conn, addr); err != nil {
+		conn.Close()
+		return nil, err
+	}
+	return conn, nil
+}
+
+// connect takes an existing connection to a socks5 proxy server,
+// and commands the server to extend that connection to target,
+// which must be a canonical address with a host and port.
+func (s *proxy_socks5) connect(conn net.Conn, target string) error {
+	host, portStr, err := net.SplitHostPort(target)
+	if err != nil {
+		return err
+	}
+
+	port, err := strconv.Atoi(portStr)
+	if err != nil {
+		return errors.New("proxy: failed to parse port number: " + portStr)
+	}
+	if port < 1 || port > 0xffff {
+		return errors.New("proxy: port number out of range: " + portStr)
+	}
+
+	// the size here is just an estimate
+	buf := make([]byte, 0, 6+len(host))
+
+	buf = append(buf, proxy_socks5Version)
+	if len(s.user) > 0 && len(s.user) < 256 && len(s.password) < 256 {
+		buf = append(buf, 2 /* num auth methods */, proxy_socks5AuthNone, proxy_socks5AuthPassword)
+	} else {
+		buf = append(buf, 1 /* num auth methods */, proxy_socks5AuthNone)
+	}
+
+	if _, err := conn.Write(buf); err != nil {
+		return errors.New("proxy: failed to write greeting to SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+
+	if _, err := io.ReadFull(conn, buf[:2]); err != nil {
+		return errors.New("proxy: failed to read greeting from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+	if buf[0] != 5 {
+		return errors.New("proxy: SOCKS5 proxy at " + s.addr + " has unexpected version " + strconv.Itoa(int(buf[0])))
+	}
+	if buf[1] == 0xff {
+		return errors.New("proxy: SOCKS5 proxy at " + s.addr + " requires authentication")
+	}
+
+	// See RFC 1929
+	if buf[1] == proxy_socks5AuthPassword {
+		buf = buf[:0]
+		buf = append(buf, 1 /* password protocol version */)
+		buf = append(buf, uint8(len(s.user)))
+		buf = append(buf, s.user...)
+		buf = append(buf, uint8(len(s.password)))
+		buf = append(buf, s.password...)
+
+		if _, err := conn.Write(buf); err != nil {
+			return errors.New("proxy: failed to write authentication request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
+		}
+
+		if _, err := io.ReadFull(conn, buf[:2]); err != nil {
+			return errors.New("proxy: failed to read authentication reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+		}
+
+		if buf[1] != 0 {
+			return errors.New("proxy: SOCKS5 proxy at " + s.addr + " rejected username/password")
+		}
+	}
+
+	buf = buf[:0]
+	buf = append(buf, proxy_socks5Version, proxy_socks5Connect, 0 /* reserved */)
+
+	if ip := net.ParseIP(host); ip != nil {
+		if ip4 := ip.To4(); ip4 != nil {
+			buf = append(buf, proxy_socks5IP4)
+			ip = ip4
+		} else {
+			buf = append(buf, proxy_socks5IP6)
+		}
+		buf = append(buf, ip...)
+	} else {
+		if len(host) > 255 {
+			return errors.New("proxy: destination host name too long: " + host)
+		}
+		buf = append(buf, proxy_socks5Domain)
+		buf = append(buf, byte(len(host)))
+		buf = append(buf, host...)
+	}
+	buf = append(buf, byte(port>>8), byte(port))
+
+	if _, err := conn.Write(buf); err != nil {
+		return errors.New("proxy: failed to write connect request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+
+	if _, err := io.ReadFull(conn, buf[:4]); err != nil {
+		return errors.New("proxy: failed to read connect reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+
+	failure := "unknown error"
+	if int(buf[1]) < len(proxy_socks5Errors) {
+		failure = proxy_socks5Errors[buf[1]]
+	}
+
+	if len(failure) > 0 {
+		return errors.New("proxy: SOCKS5 proxy at " + s.addr + " failed to connect: " + failure)
+	}
+
+	bytesToDiscard := 0
+	switch buf[3] {
+	case proxy_socks5IP4:
+		bytesToDiscard = net.IPv4len
+	case proxy_socks5IP6:
+		bytesToDiscard = net.IPv6len
+	case proxy_socks5Domain:
+		_, err := io.ReadFull(conn, buf[:1])
+		if err != nil {
+			return errors.New("proxy: failed to read domain length from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+		}
+		bytesToDiscard = int(buf[0])
+	default:
+		return errors.New("proxy: got unknown address type " + strconv.Itoa(int(buf[3])) + " from SOCKS5 proxy at " + s.addr)
+	}
+
+	if cap(buf) < bytesToDiscard {
+		buf = make([]byte, bytesToDiscard)
+	} else {
+		buf = buf[:bytesToDiscard]
+	}
+	if _, err := io.ReadFull(conn, buf); err != nil {
+		return errors.New("proxy: failed to read address from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+
+	// Also need to discard the port number
+	if _, err := io.ReadFull(conn, buf[:2]); err != nil {
+		return errors.New("proxy: failed to read port from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+
+	return nil
+}

vendor/github.com/mailru/easyjson/jlexer/lexer.go

@@ -401,6 +401,7 @@ func (r *Lexer) scanToken() {
 // consume resets the current token to allow scanning the next one.
 func (r *Lexer) consume() {
 	r.token.kind = tokenUndef
+	r.token.byteValueCloned = false
 	r.token.delimValue = 0
 }
 
@@ -528,6 +529,7 @@ func (r *Lexer) Skip() {
 func (r *Lexer) SkipRecursive() {
 	r.scanToken()
 	var start, end byte
+	startPos := r.start
 
 	switch r.token.delimValue {
 	case '{':
@@ -553,6 +555,14 @@ func (r *Lexer) SkipRecursive() {
 			level--
 			if level == 0 {
 				r.pos += i + 1
+				if !json.Valid(r.Data[startPos:r.pos]) {
+					r.pos = len(r.Data)
+					r.fatalError = &LexerError{
+						Reason: "skipped array/object json value is invalid",
+						Offset: r.pos,
+						Data:   string(r.Data[r.pos:]),
+					}
+				}
 				return
 			}
 		case c == '\\' && inQuotes:
@@ -702,6 +712,10 @@ func (r *Lexer) Bytes() []byte {
 		r.errInvalidToken("string")
 		return nil
 	}
+	if err := r.unescapeStringToken(); err != nil {
+		r.errInvalidToken("string")
+		return nil
+	}
 	ret := make([]byte, base64.StdEncoding.DecodedLen(len(r.token.byteValue)))
 	n, err := base64.StdEncoding.Decode(ret, r.token.byteValue)
 	if err != nil {

vendor/github.com/mxk/go-flowrate/LICENSE

@@ -0,0 +1,29 @@
+Copyright (c) 2014 The Go-FlowRate Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the
+   distribution.
+
+ * Neither the name of the go-flowrate project nor the names of its
+   contributors may be used to endorse or promote products derived
+   from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/mxk/go-flowrate/flowrate/flowrate.go

@@ -0,0 +1,267 @@
+//
+// Written by Maxim Khitrov (November 2012)
+//
+
+// Package flowrate provides the tools for monitoring and limiting the flow rate
+// of an arbitrary data stream.
+package flowrate
+
+import (
+	"math"
+	"sync"
+	"time"
+)
+
+// Monitor monitors and limits the transfer rate of a data stream.
+type Monitor struct {
+	mu      sync.Mutex    // Mutex guarding access to all internal fields
+	active  bool          // Flag indicating an active transfer
+	start   time.Duration // Transfer start time (clock() value)
+	bytes   int64         // Total number of bytes transferred
+	samples int64         // Total number of samples taken
+
+	rSample float64 // Most recent transfer rate sample (bytes per second)
+	rEMA    float64 // Exponential moving average of rSample
+	rPeak   float64 // Peak transfer rate (max of all rSamples)
+	rWindow float64 // rEMA window (seconds)
+
+	sBytes int64         // Number of bytes transferred since sLast
+	sLast  time.Duration // Most recent sample time (stop time when inactive)
+	sRate  time.Duration // Sampling rate
+
+	tBytes int64         // Number of bytes expected in the current transfer
+	tLast  time.Duration // Time of the most recent transfer of at least 1 byte
+}
+
+// New creates a new flow control monitor. Instantaneous transfer rate is
+// measured and updated for each sampleRate interval. windowSize determines the
+// weight of each sample in the exponential moving average (EMA) calculation.
+// The exact formulas are:
+//
+// 	sampleTime = currentTime - prevSampleTime
+// 	sampleRate = byteCount / sampleTime
+// 	weight     = 1 - exp(-sampleTime/windowSize)
+// 	newRate    = weight*sampleRate + (1-weight)*oldRate
+//
+// The default values for sampleRate and windowSize (if <= 0) are 100ms and 1s,
+// respectively.
+func New(sampleRate, windowSize time.Duration) *Monitor {
+	if sampleRate = clockRound(sampleRate); sampleRate <= 0 {
+		sampleRate = 5 * clockRate
+	}
+	if windowSize <= 0 {
+		windowSize = 1 * time.Second
+	}
+	now := clock()
+	return &Monitor{
+		active:  true,
+		start:   now,
+		rWindow: windowSize.Seconds(),
+		sLast:   now,
+		sRate:   sampleRate,
+		tLast:   now,
+	}
+}
+
+// Update records the transfer of n bytes and returns n. It should be called
+// after each Read/Write operation, even if n is 0.
+func (m *Monitor) Update(n int) int {
+	m.mu.Lock()
+	m.update(n)
+	m.mu.Unlock()
+	return n
+}
+
+// IO is a convenience method intended to wrap io.Reader and io.Writer method
+// execution. It calls m.Update(n) and then returns (n, err) unmodified.
+func (m *Monitor) IO(n int, err error) (int, error) {
+	return m.Update(n), err
+}
+
+// Done marks the transfer as finished and prevents any further updates or
+// limiting. Instantaneous and current transfer rates drop to 0. Update, IO, and
+// Limit methods become NOOPs. It returns the total number of bytes transferred.
+func (m *Monitor) Done() int64 {
+	m.mu.Lock()
+	if now := m.update(0); m.sBytes > 0 {
+		m.reset(now)
+	}
+	m.active = false
+	m.tLast = 0
+	n := m.bytes
+	m.mu.Unlock()
+	return n
+}
+
+// timeRemLimit is the maximum Status.TimeRem value.
+const timeRemLimit = 999*time.Hour + 59*time.Minute + 59*time.Second
+
+// Status represents the current Monitor status. All transfer rates are in bytes
+// per second rounded to the nearest byte.
+type Status struct {
+	Active   bool          // Flag indicating an active transfer
+	Start    time.Time     // Transfer start time
+	Duration time.Duration // Time period covered by the statistics
+	Idle     time.Duration // Time since the last transfer of at least 1 byte
+	Bytes    int64         // Total number of bytes transferred
+	Samples  int64         // Total number of samples taken
+	InstRate int64         // Instantaneous transfer rate
+	CurRate  int64         // Current transfer rate (EMA of InstRate)
+	AvgRate  int64         // Average transfer rate (Bytes / Duration)
+	PeakRate int64         // Maximum instantaneous transfer rate
+	BytesRem int64         // Number of bytes remaining in the transfer
+	TimeRem  time.Duration // Estimated time to completion
+	Progress Percent       // Overall transfer progress
+}
+
+// Status returns current transfer status information. The returned value
+// becomes static after a call to Done.
+func (m *Monitor) Status() Status {
+	m.mu.Lock()
+	now := m.update(0)
+	s := Status{
+		Active:   m.active,
+		Start:    clockToTime(m.start),
+		Duration: m.sLast - m.start,
+		Idle:     now - m.tLast,
+		Bytes:    m.bytes,
+		Samples:  m.samples,
+		PeakRate: round(m.rPeak),
+		BytesRem: m.tBytes - m.bytes,
+		Progress: percentOf(float64(m.bytes), float64(m.tBytes)),
+	}
+	if s.BytesRem < 0 {
+		s.BytesRem = 0
+	}
+	if s.Duration > 0 {
+		rAvg := float64(s.Bytes) / s.Duration.Seconds()
+		s.AvgRate = round(rAvg)
+		if s.Active {
+			s.InstRate = round(m.rSample)
+			s.CurRate = round(m.rEMA)
+			if s.BytesRem > 0 {
+				if tRate := 0.8*m.rEMA + 0.2*rAvg; tRate > 0 {
+					ns := float64(s.BytesRem) / tRate * 1e9
+					if ns > float64(timeRemLimit) {
+						ns = float64(timeRemLimit)
+					}
+					s.TimeRem = clockRound(time.Duration(ns))
+				}
+			}
+		}
+	}
+	m.mu.Unlock()
+	return s
+}
+
+// Limit restricts the instantaneous (per-sample) data flow to rate bytes per
+// second. It returns the maximum number of bytes (0 <= n <= want) that may be
+// transferred immediately without exceeding the limit. If block == true, the
+// call blocks until n > 0. want is returned unmodified if want < 1, rate < 1,
+// or the transfer is inactive (after a call to Done).
+//
+// At least one byte is always allowed to be transferred in any given sampling
+// period. Thus, if the sampling rate is 100ms, the lowest achievable flow rate
+// is 10 bytes per second.
+//
+// For usage examples, see the implementation of Reader and Writer in io.go.
+func (m *Monitor) Limit(want int, rate int64, block bool) (n int) {
+	if want < 1 || rate < 1 {
+		return want
+	}
+	m.mu.Lock()
+
+	// Determine the maximum number of bytes that can be sent in one sample
+	limit := round(float64(rate) * m.sRate.Seconds())
+	if limit <= 0 {
+		limit = 1
+	}
+
+	// If block == true, wait until m.sBytes < limit
+	if now := m.update(0); block {
+		for m.sBytes >= limit && m.active {
+			now = m.waitNextSample(now)
+		}
+	}
+
+	// Make limit <= want (unlimited if the transfer is no longer active)
+	if limit -= m.sBytes; limit > int64(want) || !m.active {
+		limit = int64(want)
+	}
+	m.mu.Unlock()
+
+	if limit < 0 {
+		limit = 0
+	}
+	return int(limit)
+}
+
+// SetTransferSize specifies the total size of the data transfer, which allows
+// the Monitor to calculate the overall progress and time to completion.
+func (m *Monitor) SetTransferSize(bytes int64) {
+	if bytes < 0 {
+		bytes = 0
+	}
+	m.mu.Lock()
+	m.tBytes = bytes
+	m.mu.Unlock()
+}
+
+// update accumulates the transferred byte count for the current sample until
+// clock() - m.sLast >= m.sRate. The monitor status is updated once the current
+// sample is done.
+func (m *Monitor) update(n int) (now time.Duration) {
+	if !m.active {
+		return
+	}
+	if now = clock(); n > 0 {
+		m.tLast = now
+	}
+	m.sBytes += int64(n)
+	if sTime := now - m.sLast; sTime >= m.sRate {
+		t := sTime.Seconds()
+		if m.rSample = float64(m.sBytes) / t; m.rSample > m.rPeak {
+			m.rPeak = m.rSample
+		}
+
+		// Exponential moving average using a method similar to *nix load
+		// average calculation. Longer sampling periods carry greater weight.
+		if m.samples > 0 {
+			w := math.Exp(-t / m.rWindow)
+			m.rEMA = m.rSample + w*(m.rEMA-m.rSample)
+		} else {
+			m.rEMA = m.rSample
+		}
+		m.reset(now)
+	}
+	return
+}
+
+// reset clears the current sample state in preparation for the next sample.
+func (m *Monitor) reset(sampleTime time.Duration) {
+	m.bytes += m.sBytes
+	m.samples++
+	m.sBytes = 0
+	m.sLast = sampleTime
+}
+
+// waitNextSample sleeps for the remainder of the current sample. The lock is
+// released and reacquired during the actual sleep period, so it's possible for
+// the transfer to be inactive when this method returns.
+func (m *Monitor) waitNextSample(now time.Duration) time.Duration {
+	const minWait = 5 * time.Millisecond
+	current := m.sLast
+
+	// sleep until the last sample time changes (ideally, just one iteration)
+	for m.sLast == current && m.active {
+		d := current + m.sRate - now
+		m.mu.Unlock()
+		if d < minWait {
+			d = minWait
+		}
+		time.Sleep(d)
+		m.mu.Lock()
+		now = m.update(0)
+	}
+	return now
+}

vendor/github.com/mxk/go-flowrate/flowrate/io.go

@@ -0,0 +1,133 @@
+//
+// Written by Maxim Khitrov (November 2012)
+//
+
+package flowrate
+
+import (
+	"errors"
+	"io"
+)
+
+// ErrLimit is returned by the Writer when a non-blocking write is short due to
+// the transfer rate limit.
+var ErrLimit = errors.New("flowrate: flow rate limit exceeded")
+
+// Limiter is implemented by the Reader and Writer to provide a consistent
+// interface for monitoring and controlling data transfer.
+type Limiter interface {
+	Done() int64
+	Status() Status
+	SetTransferSize(bytes int64)
+	SetLimit(new int64) (old int64)
+	SetBlocking(new bool) (old bool)
+}
+
+// Reader implements io.ReadCloser with a restriction on the rate of data
+// transfer.
+type Reader struct {
+	io.Reader // Data source
+	*Monitor  // Flow control monitor
+
+	limit int64 // Rate limit in bytes per second (unlimited when <= 0)
+	block bool  // What to do when no new bytes can be read due to the limit
+}
+
+// NewReader restricts all Read operations on r to limit bytes per second.
+func NewReader(r io.Reader, limit int64) *Reader {
+	return &Reader{r, New(0, 0), limit, true}
+}
+
+// Read reads up to len(p) bytes into p without exceeding the current transfer
+// rate limit. It returns (0, nil) immediately if r is non-blocking and no new
+// bytes can be read at this time.
+func (r *Reader) Read(p []byte) (n int, err error) {
+	p = p[:r.Limit(len(p), r.limit, r.block)]
+	if len(p) > 0 {
+		n, err = r.IO(r.Reader.Read(p))
+	}
+	return
+}
+
+// SetLimit changes the transfer rate limit to new bytes per second and returns
+// the previous setting.
+func (r *Reader) SetLimit(new int64) (old int64) {
+	old, r.limit = r.limit, new
+	return
+}
+
+// SetBlocking changes the blocking behavior and returns the previous setting. A
+// Read call on a non-blocking reader returns immediately if no additional bytes
+// may be read at this time due to the rate limit.
+func (r *Reader) SetBlocking(new bool) (old bool) {
+	old, r.block = r.block, new
+	return
+}
+
+// Close closes the underlying reader if it implements the io.Closer interface.
+func (r *Reader) Close() error {
+	defer r.Done()
+	if c, ok := r.Reader.(io.Closer); ok {
+		return c.Close()
+	}
+	return nil
+}
+
+// Writer implements io.WriteCloser with a restriction on the rate of data
+// transfer.
+type Writer struct {
+	io.Writer // Data destination
+	*Monitor  // Flow control monitor
+
+	limit int64 // Rate limit in bytes per second (unlimited when <= 0)
+	block bool  // What to do when no new bytes can be written due to the limit
+}
+
+// NewWriter restricts all Write operations on w to limit bytes per second. The
+// transfer rate and the default blocking behavior (true) can be changed
+// directly on the returned *Writer.
+func NewWriter(w io.Writer, limit int64) *Writer {
+	return &Writer{w, New(0, 0), limit, true}
+}
+
+// Write writes len(p) bytes from p to the underlying data stream without
+// exceeding the current transfer rate limit. It returns (n, ErrLimit) if w is
+// non-blocking and no additional bytes can be written at this time.
+func (w *Writer) Write(p []byte) (n int, err error) {
+	var c int
+	for len(p) > 0 && err == nil {
+		s := p[:w.Limit(len(p), w.limit, w.block)]
+		if len(s) > 0 {
+			c, err = w.IO(w.Writer.Write(s))
+		} else {
+			return n, ErrLimit
+		}
+		p = p[c:]
+		n += c
+	}
+	return
+}
+
+// SetLimit changes the transfer rate limit to new bytes per second and returns
+// the previous setting.
+func (w *Writer) SetLimit(new int64) (old int64) {
+	old, w.limit = w.limit, new
+	return
+}
+
+// SetBlocking changes the blocking behavior and returns the previous setting. A
+// Write call on a non-blocking writer returns as soon as no additional bytes
+// may be written at this time due to the rate limit.
+func (w *Writer) SetBlocking(new bool) (old bool) {
+	old, w.block = w.block, new
+	return
+}
+
+// Close closes the underlying writer if it implements the io.Closer interface.
+func (w *Writer) Close() error {
+	defer w.Done()
+	if c, ok := w.Writer.(io.Closer); ok {
+		return c.Close()
+	}
+	return nil
+}

vendor/github.com/mxk/go-flowrate/flowrate/util.go

@@ -0,0 +1,67 @@
+//
+// Written by Maxim Khitrov (November 2012)
+//
+
+package flowrate
+
+import (
+	"math"
+	"strconv"
+	"time"
+)
+
+// clockRate is the resolution and precision of clock().
+const clockRate = 20 * time.Millisecond
+
+// czero is the process start time rounded down to the nearest clockRate
+// increment.
+var czero = time.Duration(time.Now().UnixNano()) / clockRate * clockRate
+
+// clock returns a low resolution timestamp relative to the process start time.
+func clock() time.Duration {
+	return time.Duration(time.Now().UnixNano())/clockRate*clockRate - czero
+}
+
+// clockToTime converts a clock() timestamp to an absolute time.Time value.
+func clockToTime(c time.Duration) time.Time {
+	return time.Unix(0, int64(czero+c))
+}
+
+// clockRound returns d rounded to the nearest clockRate increment.
+func clockRound(d time.Duration) time.Duration {
+	return (d + clockRate>>1) / clockRate * clockRate
+}
+
+// round returns x rounded to the nearest int64 (non-negative values only).
+func round(x float64) int64 {
+	if _, frac := math.Modf(x); frac >= 0.5 {
+		return int64(math.Ceil(x))
+	}
+	return int64(math.Floor(x))
+}
+
+// Percent represents a percentage in increments of 1/1000th of a percent.
+type Percent uint32
+
+// percentOf calculates what percent of the total is x.
+func percentOf(x, total float64) Percent {
+	if x < 0 || total <= 0 {
+		return 0
+	} else if p := round(x / total * 1e5); p <= math.MaxUint32 {
+		return Percent(p)
+	}
+	return Percent(math.MaxUint32)
+}
+
+func (p Percent) Float() float64 {
+	return float64(p) * 1e-3
+}
+
+func (p Percent) String() string {
+	var buf [12]byte
+	b := strconv.AppendUint(buf[:0], uint64(p)/1000, 10)
+	n := len(b)
+	b = strconv.AppendUint(b, 1000+uint64(p)%1000, 10)
+	b[n] = '.'
+	return string(append(b, '%'))
+}

vendor/golang.org/x/net/context/go17.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.7
-// +build go1.7
 
 package context
 

vendor/golang.org/x/net/context/go19.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.9
-// +build go1.9
 
 package context
 

vendor/golang.org/x/net/context/pre_go17.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !go1.7
-// +build !go1.7
 
 package context
 

vendor/golang.org/x/net/context/pre_go19.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !go1.9
-// +build !go1.9
 
 package context
 

vendor/golang.org/x/net/html/atom/atom.go

@@ -0,0 +1,78 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package atom provides integer codes (also known as atoms) for a fixed set of
+// frequently occurring HTML strings: tag names and attribute keys such as "p"
+// and "id".
+//
+// Sharing an atom's name between all elements with the same tag can result in
+// fewer string allocations when tokenizing and parsing HTML. Integer
+// comparisons are also generally faster than string comparisons.
+//
+// The value of an atom's particular code is not guaranteed to stay the same
+// between versions of this package. Neither is any ordering guaranteed:
+// whether atom.H1 < atom.H2 may also change. The codes are not guaranteed to
+// be dense. The only guarantees are that e.g. looking up "div" will yield
+// atom.Div, calling atom.Div.String will return "div", and atom.Div != 0.
+package atom // import "golang.org/x/net/html/atom"
+
+// Atom is an integer code for a string. The zero value maps to "".
+type Atom uint32
+
+// String returns the atom's name.
+func (a Atom) String() string {
+	start := uint32(a >> 8)
+	n := uint32(a & 0xff)
+	if start+n > uint32(len(atomText)) {
+		return ""
+	}
+	return atomText[start : start+n]
+}
+
+func (a Atom) string() string {
+	return atomText[a>>8 : a>>8+a&0xff]
+}
+
+// fnv computes the FNV hash with an arbitrary starting value h.
+func fnv(h uint32, s []byte) uint32 {
+	for i := range s {
+		h ^= uint32(s[i])
+		h *= 16777619
+	}
+	return h
+}
+
+func match(s string, t []byte) bool {
+	for i, c := range t {
+		if s[i] != c {
+			return false
+		}
+	}
+	return true
+}
+
+// Lookup returns the atom whose name is s. It returns zero if there is no
+// such atom. The lookup is case sensitive.
+func Lookup(s []byte) Atom {
+	if len(s) == 0 || len(s) > maxAtomLen {
+		return 0
+	}
+	h := fnv(hash0, s)
+	if a := table[h&uint32(len(table)-1)]; int(a&0xff) == len(s) && match(a.string(), s) {
+		return a
+	}
+	if a := table[(h>>16)&uint32(len(table)-1)]; int(a&0xff) == len(s) && match(a.string(), s) {
+		return a
+	}
+	return 0
+}
+
+// String returns a string whose contents are equal to s. In that sense, it is
+// equivalent to string(s) but may be more efficient.
+func String(s []byte) string {
+	if a := Lookup(s); a != 0 {
+		return a.String()
+	}
+	return string(s)
+}

vendor/golang.org/x/net/html/atom/table.go

@@ -0,0 +1,783 @@
+// Code generated by go generate gen.go; DO NOT EDIT.
+
+//go:generate go run gen.go
+
+package atom
+
+const (
+	A                         Atom = 0x1
+	Abbr                      Atom = 0x4
+	Accept                    Atom = 0x1a06
+	AcceptCharset             Atom = 0x1a0e
+	Accesskey                 Atom = 0x2c09
+	Acronym                   Atom = 0xaa07
+	Action                    Atom = 0x27206
+	Address                   Atom = 0x6f307
+	Align                     Atom = 0xb105
+	Allowfullscreen           Atom = 0x2080f
+	Allowpaymentrequest       Atom = 0xc113
+	Allowusermedia            Atom = 0xdd0e
+	Alt                       Atom = 0xf303
+	Annotation                Atom = 0x1c90a
+	AnnotationXml             Atom = 0x1c90e
+	Applet                    Atom = 0x31906
+	Area                      Atom = 0x35604
+	Article                   Atom = 0x3fc07
+	As                        Atom = 0x3c02
+	Aside                     Atom = 0x10705
+	Async                     Atom = 0xff05
+	Audio                     Atom = 0x11505
+	Autocomplete              Atom = 0x2780c
+	Autofocus                 Atom = 0x12109
+	Autoplay                  Atom = 0x13c08
+	B                         Atom = 0x101
+	Base                      Atom = 0x3b04
+	Basefont                  Atom = 0x3b08
+	Bdi                       Atom = 0xba03
+	Bdo                       Atom = 0x14b03
+	Bgsound                   Atom = 0x15e07
+	Big                       Atom = 0x17003
+	Blink                     Atom = 0x17305
+	Blockquote                Atom = 0x1870a
+	Body                      Atom = 0x2804
+	Br                        Atom = 0x202
+	Button                    Atom = 0x19106
+	Canvas                    Atom = 0x10306
+	Caption                   Atom = 0x23107
+	Center                    Atom = 0x22006
+	Challenge                 Atom = 0x29b09
+	Charset                   Atom = 0x2107
+	Checked                   Atom = 0x47907
+	Cite                      Atom = 0x19c04
+	Class                     Atom = 0x56405
+	Code                      Atom = 0x5c504
+	Col                       Atom = 0x1ab03
+	Colgroup                  Atom = 0x1ab08
+	Color                     Atom = 0x1bf05
+	Cols                      Atom = 0x1c404
+	Colspan                   Atom = 0x1c407
+	Command                   Atom = 0x1d707
+	Content                   Atom = 0x58b07
+	Contenteditable           Atom = 0x58b0f
+	Contextmenu               Atom = 0x3800b
+	Controls                  Atom = 0x1de08
+	Coords                    Atom = 0x1ea06
+	Crossorigin               Atom = 0x1fb0b
+	Data                      Atom = 0x4a504
+	Datalist                  Atom = 0x4a508
+	Datetime                  Atom = 0x2b808
+	Dd                        Atom = 0x2d702
+	Default                   Atom = 0x10a07
+	Defer                     Atom = 0x5c705
+	Del                       Atom = 0x45203
+	Desc                      Atom = 0x56104
+	Details                   Atom = 0x7207
+	Dfn                       Atom = 0x8703
+	Dialog                    Atom = 0xbb06
+	Dir                       Atom = 0x9303
+	Dirname                   Atom = 0x9307
+	Disabled                  Atom = 0x16408
+	Div                       Atom = 0x16b03
+	Dl                        Atom = 0x5e602
+	Download                  Atom = 0x46308
+	Draggable                 Atom = 0x17a09
+	Dropzone                  Atom = 0x40508
+	Dt                        Atom = 0x64b02
+	Em                        Atom = 0x6e02
+	Embed                     Atom = 0x6e05
+	Enctype                   Atom = 0x28d07
+	Face                      Atom = 0x21e04
+	Fieldset                  Atom = 0x22608
+	Figcaption                Atom = 0x22e0a
+	Figure                    Atom = 0x24806
+	Font                      Atom = 0x3f04
+	Footer                    Atom = 0xf606
+	For                       Atom = 0x25403
+	ForeignObject             Atom = 0x2540d
+	Foreignobject             Atom = 0x2610d
+	Form                      Atom = 0x26e04
+	Formaction                Atom = 0x26e0a
+	Formenctype               Atom = 0x2890b
+	Formmethod                Atom = 0x2a40a
+	Formnovalidate            Atom = 0x2ae0e
+	Formtarget                Atom = 0x2c00a
+	Frame                     Atom = 0x8b05
+	Frameset                  Atom = 0x8b08
+	H1                        Atom = 0x15c02
+	H2                        Atom = 0x2de02
+	H3                        Atom = 0x30d02
+	H4                        Atom = 0x34502
+	H5                        Atom = 0x34f02
+	H6                        Atom = 0x64d02
+	Head                      Atom = 0x33104
+	Header                    Atom = 0x33106
+	Headers                   Atom = 0x33107
+	Height                    Atom = 0x5206
+	Hgroup                    Atom = 0x2ca06
+	Hidden                    Atom = 0x2d506
+	High                      Atom = 0x2db04
+	Hr                        Atom = 0x15702
+	Href                      Atom = 0x2e004
+	Hreflang                  Atom = 0x2e008
+	Html                      Atom = 0x5604
+	HttpEquiv                 Atom = 0x2e80a
+	I                         Atom = 0x601
+	Icon                      Atom = 0x58a04
+	Id                        Atom = 0x10902
+	Iframe                    Atom = 0x2fc06
+	Image                     Atom = 0x30205
+	Img                       Atom = 0x30703
+	Input                     Atom = 0x44b05
+	Inputmode                 Atom = 0x44b09
+	Ins                       Atom = 0x20403
+	Integrity                 Atom = 0x23f09
+	Is                        Atom = 0x16502
+	Isindex                   Atom = 0x30f07
+	Ismap                     Atom = 0x31605
+	Itemid                    Atom = 0x38b06
+	Itemprop                  Atom = 0x19d08
+	Itemref                   Atom = 0x3cd07
+	Itemscope                 Atom = 0x67109
+	Itemtype                  Atom = 0x31f08
+	Kbd                       Atom = 0xb903
+	Keygen                    Atom = 0x3206
+	Keytype                   Atom = 0xd607
+	Kind                      Atom = 0x17704
+	Label                     Atom = 0x5905
+	Lang                      Atom = 0x2e404
+	Legend                    Atom = 0x18106
+	Li                        Atom = 0xb202
+	Link                      Atom = 0x17404
+	List                      Atom = 0x4a904
+	Listing                   Atom = 0x4a907
+	Loop                      Atom = 0x5d04
+	Low                       Atom = 0xc303
+	Main                      Atom = 0x1004
+	Malignmark                Atom = 0xb00a
+	Manifest                  Atom = 0x6d708
+	Map                       Atom = 0x31803
+	Mark                      Atom = 0xb604
+	Marquee                   Atom = 0x32707
+	Math                      Atom = 0x32e04
+	Max                       Atom = 0x33d03
+	Maxlength                 Atom = 0x33d09
+	Media                     Atom = 0xe605
+	Mediagroup                Atom = 0xe60a
+	Menu                      Atom = 0x38704
+	Menuitem                  Atom = 0x38708
+	Meta                      Atom = 0x4b804
+	Meter                     Atom = 0x9805
+	Method                    Atom = 0x2a806
+	Mglyph                    Atom = 0x30806
+	Mi                        Atom = 0x34702
+	Min                       Atom = 0x34703
+	Minlength                 Atom = 0x34709
+	Mn                        Atom = 0x2b102
+	Mo                        Atom = 0xa402
+	Ms                        Atom = 0x67402
+	Mtext                     Atom = 0x35105
+	Multiple                  Atom = 0x35f08
+	Muted                     Atom = 0x36705
+	Name                      Atom = 0x9604
+	Nav                       Atom = 0x1303
+	Nobr                      Atom = 0x3704
+	Noembed                   Atom = 0x6c07
+	Noframes                  Atom = 0x8908
+	Nomodule                  Atom = 0xa208
+	Nonce                     Atom = 0x1a605
+	Noscript                  Atom = 0x21608
+	Novalidate                Atom = 0x2b20a
+	Object                    Atom = 0x26806
+	Ol                        Atom = 0x13702
+	Onabort                   Atom = 0x19507
+	Onafterprint              Atom = 0x2360c
+	Onautocomplete            Atom = 0x2760e
+	Onautocompleteerror       Atom = 0x27613
+	Onauxclick                Atom = 0x61f0a
+	Onbeforeprint             Atom = 0x69e0d
+	Onbeforeunload            Atom = 0x6e70e
+	Onblur                    Atom = 0x56d06
+	Oncancel                  Atom = 0x11908
+	Oncanplay                 Atom = 0x14d09
+	Oncanplaythrough          Atom = 0x14d10
+	Onchange                  Atom = 0x41b08
+	Onclick                   Atom = 0x2f507
+	Onclose                   Atom = 0x36c07
+	Oncontextmenu             Atom = 0x37e0d
+	Oncopy                    Atom = 0x39106
+	Oncuechange               Atom = 0x3970b
+	Oncut                     Atom = 0x3a205
+	Ondblclick                Atom = 0x3a70a
+	Ondrag                    Atom = 0x3b106
+	Ondragend                 Atom = 0x3b109
+	Ondragenter               Atom = 0x3ba0b
+	Ondragexit                Atom = 0x3c50a
+	Ondragleave               Atom = 0x3df0b
+	Ondragover                Atom = 0x3ea0a
+	Ondragstart               Atom = 0x3f40b
+	Ondrop                    Atom = 0x40306
+	Ondurationchange          Atom = 0x41310
+	Onemptied                 Atom = 0x40a09
+	Onended                   Atom = 0x42307
+	Onerror                   Atom = 0x42a07
+	Onfocus                   Atom = 0x43107
+	Onhashchange              Atom = 0x43d0c
+	Oninput                   Atom = 0x44907
+	Oninvalid                 Atom = 0x45509
+	Onkeydown                 Atom = 0x45e09
+	Onkeypress                Atom = 0x46b0a
+	Onkeyup                   Atom = 0x48007
+	Onlanguagechange          Atom = 0x48d10
+	Onload                    Atom = 0x49d06
+	Onloadeddata              Atom = 0x49d0c
+	Onloadedmetadata          Atom = 0x4b010
+	Onloadend                 Atom = 0x4c609
+	Onloadstart               Atom = 0x4cf0b
+	Onmessage                 Atom = 0x4da09
+	Onmessageerror            Atom = 0x4da0e
+	Onmousedown               Atom = 0x4e80b
+	Onmouseenter              Atom = 0x4f30c
+	Onmouseleave              Atom = 0x4ff0c
+	Onmousemove               Atom = 0x50b0b
+	Onmouseout                Atom = 0x5160a
+	Onmouseover               Atom = 0x5230b
+	Onmouseup                 Atom = 0x52e09
+	Onmousewheel              Atom = 0x53c0c
+	Onoffline                 Atom = 0x54809
+	Ononline                  Atom = 0x55108
+	Onpagehide                Atom = 0x5590a
+	Onpageshow                Atom = 0x5730a
+	Onpaste                   Atom = 0x57f07
+	Onpause                   Atom = 0x59a07
+	Onplay                    Atom = 0x5a406
+	Onplaying                 Atom = 0x5a409
+	Onpopstate                Atom = 0x5ad0a
+	Onprogress                Atom = 0x5b70a
+	Onratechange              Atom = 0x5cc0c
+	Onrejectionhandled        Atom = 0x5d812
+	Onreset                   Atom = 0x5ea07
+	Onresize                  Atom = 0x5f108
+	Onscroll                  Atom = 0x60008
+	Onsecuritypolicyviolation Atom = 0x60819
+	Onseeked                  Atom = 0x62908
+	Onseeking                 Atom = 0x63109
+	Onselect                  Atom = 0x63a08
+	Onshow                    Atom = 0x64406
+	Onsort                    Atom = 0x64f06
+	Onstalled                 Atom = 0x65909
+	Onstorage                 Atom = 0x66209
+	Onsubmit                  Atom = 0x66b08
+	Onsuspend                 Atom = 0x67b09
+	Ontimeupdate              Atom = 0x400c
+	Ontoggle                  Atom = 0x68408
+	Onunhandledrejection      Atom = 0x68c14
+	Onunload                  Atom = 0x6ab08
+	Onvolumechange            Atom = 0x6b30e
+	Onwaiting                 Atom = 0x6c109
+	Onwheel                   Atom = 0x6ca07
+	Open                      Atom = 0x1a304
+	Optgroup                  Atom = 0x5f08
+	Optimum                   Atom = 0x6d107
+	Option                    Atom = 0x6e306
+	Output                    Atom = 0x51d06
+	P                         Atom = 0xc01
+	Param                     Atom = 0xc05
+	Pattern                   Atom = 0x6607
+	Picture                   Atom = 0x7b07
+	Ping                      Atom = 0xef04
+	Placeholder               Atom = 0x1310b
+	Plaintext                 Atom = 0x1b209
+	Playsinline               Atom = 0x1400b
+	Poster                    Atom = 0x2cf06
+	Pre                       Atom = 0x47003
+	Preload                   Atom = 0x48607
+	Progress                  Atom = 0x5b908
+	Prompt                    Atom = 0x53606
+	Public                    Atom = 0x58606
+	Q                         Atom = 0xcf01
+	Radiogroup                Atom = 0x30a
+	Rb                        Atom = 0x3a02
+	Readonly                  Atom = 0x35708
+	Referrerpolicy            Atom = 0x3d10e
+	Rel                       Atom = 0x48703
+	Required                  Atom = 0x24c08
+	Reversed                  Atom = 0x8008
+	Rows                      Atom = 0x9c04
+	Rowspan                   Atom = 0x9c07
+	Rp                        Atom = 0x23c02
+	Rt                        Atom = 0x19a02
+	Rtc                       Atom = 0x19a03
+	Ruby                      Atom = 0xfb04
+	S                         Atom = 0x2501
+	Samp                      Atom = 0x7804
+	Sandbox                   Atom = 0x12907
+	Scope                     Atom = 0x67505
+	Scoped                    Atom = 0x67506
+	Script                    Atom = 0x21806
+	Seamless                  Atom = 0x37108
+	Section                   Atom = 0x56807
+	Select                    Atom = 0x63c06
+	Selected                  Atom = 0x63c08
+	Shape                     Atom = 0x1e505
+	Size                      Atom = 0x5f504
+	Sizes                     Atom = 0x5f505
+	Slot                      Atom = 0x1ef04
+	Small                     Atom = 0x20605
+	Sortable                  Atom = 0x65108
+	Sorted                    Atom = 0x33706
+	Source                    Atom = 0x37806
+	Spacer                    Atom = 0x43706
+	Span                      Atom = 0x9f04
+	Spellcheck                Atom = 0x4740a
+	Src                       Atom = 0x5c003
+	Srcdoc                    Atom = 0x5c006
+	Srclang                   Atom = 0x5f907
+	Srcset                    Atom = 0x6f906
+	Start                     Atom = 0x3fa05
+	Step                      Atom = 0x58304
+	Strike                    Atom = 0xd206
+	Strong                    Atom = 0x6dd06
+	Style                     Atom = 0x6ff05
+	Sub                       Atom = 0x66d03
+	Summary                   Atom = 0x70407
+	Sup                       Atom = 0x70b03
+	Svg                       Atom = 0x70e03
+	System                    Atom = 0x71106
+	Tabindex                  Atom = 0x4be08
+	Table                     Atom = 0x59505
+	Target                    Atom = 0x2c406
+	Tbody                     Atom = 0x2705
+	Td                        Atom = 0x9202
+	Template                  Atom = 0x71408
+	Textarea                  Atom = 0x35208
+	Tfoot                     Atom = 0xf505
+	Th                        Atom = 0x15602
+	Thead                     Atom = 0x33005
+	Time                      Atom = 0x4204
+	Title                     Atom = 0x11005
+	Tr                        Atom = 0xcc02
+	Track                     Atom = 0x1ba05
+	Translate                 Atom = 0x1f209
+	Tt                        Atom = 0x6802
+	Type                      Atom = 0xd904
+	Typemustmatch             Atom = 0x2900d
+	U                         Atom = 0xb01
+	Ul                        Atom = 0xa702
+	Updateviacache            Atom = 0x460e
+	Usemap                    Atom = 0x59e06
+	Value                     Atom = 0x1505
+	Var                       Atom = 0x16d03
+	Video                     Atom = 0x2f105
+	Wbr                       Atom = 0x57c03
+	Width                     Atom = 0x64905
+	Workertype                Atom = 0x71c0a
+	Wrap                      Atom = 0x72604
+	Xmp                       Atom = 0x12f03
+)
+
+const hash0 = 0x81cdf10e
+
+const maxAtomLen = 25
+
+var table = [1 << 9]Atom{
+	0x1:   0xe60a,  // mediagroup
+	0x2:   0x2e404, // lang
+	0x4:   0x2c09,  // accesskey
+	0x5:   0x8b08,  // frameset
+	0x7:   0x63a08, // onselect
+	0x8:   0x71106, // system
+	0xa:   0x64905, // width
+	0xc:   0x2890b, // formenctype
+	0xd:   0x13702, // ol
+	0xe:   0x3970b, // oncuechange
+	0x10:  0x14b03, // bdo
+	0x11:  0x11505, // audio
+	0x12:  0x17a09, // draggable
+	0x14:  0x2f105, // video
+	0x15:  0x2b102, // mn
+	0x16:  0x38704, // menu
+	0x17:  0x2cf06, // poster
+	0x19:  0xf606,  // footer
+	0x1a:  0x2a806, // method
+	0x1b:  0x2b808, // datetime
+	0x1c:  0x19507, // onabort
+	0x1d:  0x460e,  // updateviacache
+	0x1e:  0xff05,  // async
+	0x1f:  0x49d06, // onload
+	0x21:  0x11908, // oncancel
+	0x22:  0x62908, // onseeked
+	0x23:  0x30205, // image
+	0x24:  0x5d812, // onrejectionhandled
+	0x26:  0x17404, // link
+	0x27:  0x51d06, // output
+	0x28:  0x33104, // head
+	0x29:  0x4ff0c, // onmouseleave
+	0x2a:  0x57f07, // onpaste
+	0x2b:  0x5a409, // onplaying
+	0x2c:  0x1c407, // colspan
+	0x2f:  0x1bf05, // color
+	0x30:  0x5f504, // size
+	0x31:  0x2e80a, // http-equiv
+	0x33:  0x601,   // i
+	0x34:  0x5590a, // onpagehide
+	0x35:  0x68c14, // onunhandledrejection
+	0x37:  0x42a07, // onerror
+	0x3a:  0x3b08,  // basefont
+	0x3f:  0x1303,  // nav
+	0x40:  0x17704, // kind
+	0x41:  0x35708, // readonly
+	0x42:  0x30806, // mglyph
+	0x44:  0xb202,  // li
+	0x46:  0x2d506, // hidden
+	0x47:  0x70e03, // svg
+	0x48:  0x58304, // step
+	0x49:  0x23f09, // integrity
+	0x4a:  0x58606, // public
+	0x4c:  0x1ab03, // col
+	0x4d:  0x1870a, // blockquote
+	0x4e:  0x34f02, // h5
+	0x50:  0x5b908, // progress
+	0x51:  0x5f505, // sizes
+	0x52:  0x34502, // h4
+	0x56:  0x33005, // thead
+	0x57:  0xd607,  // keytype
+	0x58:  0x5b70a, // onprogress
+	0x59:  0x44b09, // inputmode
+	0x5a:  0x3b109, // ondragend
+	0x5d:  0x3a205, // oncut
+	0x5e:  0x43706, // spacer
+	0x5f:  0x1ab08, // colgroup
+	0x62:  0x16502, // is
+	0x65:  0x3c02,  // as
+	0x66:  0x54809, // onoffline
+	0x67:  0x33706, // sorted
+	0x69:  0x48d10, // onlanguagechange
+	0x6c:  0x43d0c, // onhashchange
+	0x6d:  0x9604,  // name
+	0x6e:  0xf505,  // tfoot
+	0x6f:  0x56104, // desc
+	0x70:  0x33d03, // max
+	0x72:  0x1ea06, // coords
+	0x73:  0x30d02, // h3
+	0x74:  0x6e70e, // onbeforeunload
+	0x75:  0x9c04,  // rows
+	0x76:  0x63c06, // select
+	0x77:  0x9805,  // meter
+	0x78:  0x38b06, // itemid
+	0x79:  0x53c0c, // onmousewheel
+	0x7a:  0x5c006, // srcdoc
+	0x7d:  0x1ba05, // track
+	0x7f:  0x31f08, // itemtype
+	0x82:  0xa402,  // mo
+	0x83:  0x41b08, // onchange
+	0x84:  0x33107, // headers
+	0x85:  0x5cc0c, // onratechange
+	0x86:  0x60819, // onsecuritypolicyviolation
+	0x88:  0x4a508, // datalist
+	0x89:  0x4e80b, // onmousedown
+	0x8a:  0x1ef04, // slot
+	0x8b:  0x4b010, // onloadedmetadata
+	0x8c:  0x1a06,  // accept
+	0x8d:  0x26806, // object
+	0x91:  0x6b30e, // onvolumechange
+	0x92:  0x2107,  // charset
+	0x93:  0x27613, // onautocompleteerror
+	0x94:  0xc113,  // allowpaymentrequest
+	0x95:  0x2804,  // body
+	0x96:  0x10a07, // default
+	0x97:  0x63c08, // selected
+	0x98:  0x21e04, // face
+	0x99:  0x1e505, // shape
+	0x9b:  0x68408, // ontoggle
+	0x9e:  0x64b02, // dt
+	0x9f:  0xb604,  // mark
+	0xa1:  0xb01,   // u
+	0xa4:  0x6ab08, // onunload
+	0xa5:  0x5d04,  // loop
+	0xa6:  0x16408, // disabled
+	0xaa:  0x42307, // onended
+	0xab:  0xb00a,  // malignmark
+	0xad:  0x67b09, // onsuspend
+	0xae:  0x35105, // mtext
+	0xaf:  0x64f06, // onsort
+	0xb0:  0x19d08, // itemprop
+	0xb3:  0x67109, // itemscope
+	0xb4:  0x17305, // blink
+	0xb6:  0x3b106, // ondrag
+	0xb7:  0xa702,  // ul
+	0xb8:  0x26e04, // form
+	0xb9:  0x12907, // sandbox
+	0xba:  0x8b05,  // frame
+	0xbb:  0x1505,  // value
+	0xbc:  0x66209, // onstorage
+	0xbf:  0xaa07,  // acronym
+	0xc0:  0x19a02, // rt
+	0xc2:  0x202,   // br
+	0xc3:  0x22608, // fieldset
+	0xc4:  0x2900d, // typemustmatch
+	0xc5:  0xa208,  // nomodule
+	0xc6:  0x6c07,  // noembed
+	0xc7:  0x69e0d, // onbeforeprint
+	0xc8:  0x19106, // button
+	0xc9:  0x2f507, // onclick
+	0xca:  0x70407, // summary
+	0xcd:  0xfb04,  // ruby
+	0xce:  0x56405, // class
+	0xcf:  0x3f40b, // ondragstart
+	0xd0:  0x23107, // caption
+	0xd4:  0xdd0e,  // allowusermedia
+	0xd5:  0x4cf0b, // onloadstart
+	0xd9:  0x16b03, // div
+	0xda:  0x4a904, // list
+	0xdb:  0x32e04, // math
+	0xdc:  0x44b05, // input
+	0xdf:  0x3ea0a, // ondragover
+	0xe0:  0x2de02, // h2
+	0xe2:  0x1b209, // plaintext
+	0xe4:  0x4f30c, // onmouseenter
+	0xe7:  0x47907, // checked
+	0xe8:  0x47003, // pre
+	0xea:  0x35f08, // multiple
+	0xeb:  0xba03,  // bdi
+	0xec:  0x33d09, // maxlength
+	0xed:  0xcf01,  // q
+	0xee:  0x61f0a, // onauxclick
+	0xf0:  0x57c03, // wbr
+	0xf2:  0x3b04,  // base
+	0xf3:  0x6e306, // option
+	0xf5:  0x41310, // ondurationchange
+	0xf7:  0x8908,  // noframes
+	0xf9:  0x40508, // dropzone
+	0xfb:  0x67505, // scope
+	0xfc:  0x8008,  // reversed
+	0xfd:  0x3ba0b, // ondragenter
+	0xfe:  0x3fa05, // start
+	0xff:  0x12f03, // xmp
+	0x100: 0x5f907, // srclang
+	0x101: 0x30703, // img
+	0x104: 0x101,   // b
+	0x105: 0x25403, // for
+	0x106: 0x10705, // aside
+	0x107: 0x44907, // oninput
+	0x108: 0x35604, // area
+	0x109: 0x2a40a, // formmethod
+	0x10a: 0x72604, // wrap
+	0x10c: 0x23c02, // rp
+	0x10d: 0x46b0a, // onkeypress
+	0x10e: 0x6802,  // tt
+	0x110: 0x34702, // mi
+	0x111: 0x36705, // muted
+	0x112: 0xf303,  // alt
+	0x113: 0x5c504, // code
+	0x114: 0x6e02,  // em
+	0x115: 0x3c50a, // ondragexit
+	0x117: 0x9f04,  // span
+	0x119: 0x6d708, // manifest
+	0x11a: 0x38708, // menuitem
+	0x11b: 0x58b07, // content
+	0x11d: 0x6c109, // onwaiting
+	0x11f: 0x4c609, // onloadend
+	0x121: 0x37e0d, // oncontextmenu
+	0x123: 0x56d06, // onblur
+	0x124: 0x3fc07, // article
+	0x125: 0x9303,  // dir
+	0x126: 0xef04,  // ping
+	0x127: 0x24c08, // required
+	0x128: 0x45509, // oninvalid
+	0x129: 0xb105,  // align
+	0x12b: 0x58a04, // icon
+	0x12c: 0x64d02, // h6
+	0x12d: 0x1c404, // cols
+	0x12e: 0x22e0a, // figcaption
+	0x12f: 0x45e09, // onkeydown
+	0x130: 0x66b08, // onsubmit
+	0x131: 0x14d09, // oncanplay
+	0x132: 0x70b03, // sup
+	0x133: 0xc01,   // p
+	0x135: 0x40a09, // onemptied
+	0x136: 0x39106, // oncopy
+	0x137: 0x19c04, // cite
+	0x138: 0x3a70a, // ondblclick
+	0x13a: 0x50b0b, // onmousemove
+	0x13c: 0x66d03, // sub
+	0x13d: 0x48703, // rel
+	0x13e: 0x5f08,  // optgroup
+	0x142: 0x9c07,  // rowspan
+	0x143: 0x37806, // source
+	0x144: 0x21608, // noscript
+	0x145: 0x1a304, // open
+	0x146: 0x20403, // ins
+	0x147: 0x2540d, // foreignObject
+	0x148: 0x5ad0a, // onpopstate
+	0x14a: 0x28d07, // enctype
+	0x14b: 0x2760e, // onautocomplete
+	0x14c: 0x35208, // textarea
+	0x14e: 0x2780c, // autocomplete
+	0x14f: 0x15702, // hr
+	0x150: 0x1de08, // controls
+	0x151: 0x10902, // id
+	0x153: 0x2360c, // onafterprint
+	0x155: 0x2610d, // foreignobject
+	0x156: 0x32707, // marquee
+	0x157: 0x59a07, // onpause
+	0x158: 0x5e602, // dl
+	0x159: 0x5206,  // height
+	0x15a: 0x34703, // min
+	0x15b: 0x9307,  // dirname
+	0x15c: 0x1f209, // translate
+	0x15d: 0x5604,  // html
+	0x15e: 0x34709, // minlength
+	0x15f: 0x48607, // preload
+	0x160: 0x71408, // template
+	0x161: 0x3df0b, // ondragleave
+	0x162: 0x3a02,  // rb
+	0x164: 0x5c003, // src
+	0x165: 0x6dd06, // strong
+	0x167: 0x7804,  // samp
+	0x168: 0x6f307, // address
+	0x169: 0x55108, // ononline
+	0x16b: 0x1310b, // placeholder
+	0x16c: 0x2c406, // target
+	0x16d: 0x20605, // small
+	0x16e: 0x6ca07, // onwheel
+	0x16f: 0x1c90a, // annotation
+	0x170: 0x4740a, // spellcheck
+	0x171: 0x7207,  // details
+	0x172: 0x10306, // canvas
+	0x173: 0x12109, // autofocus
+	0x174: 0xc05,   // param
+	0x176: 0x46308, // download
+	0x177: 0x45203, // del
+	0x178: 0x36c07, // onclose
+	0x179: 0xb903,  // kbd
+	0x17a: 0x31906, // applet
+	0x17b: 0x2e004, // href
+	0x17c: 0x5f108, // onresize
+	0x17e: 0x49d0c, // onloadeddata
+	0x180: 0xcc02,  // tr
+	0x181: 0x2c00a, // formtarget
+	0x182: 0x11005, // title
+	0x183: 0x6ff05, // style
+	0x184: 0xd206,  // strike
+	0x185: 0x59e06, // usemap
+	0x186: 0x2fc06, // iframe
+	0x187: 0x1004,  // main
+	0x189: 0x7b07,  // picture
+	0x18c: 0x31605, // ismap
+	0x18e: 0x4a504, // data
+	0x18f: 0x5905,  // label
+	0x191: 0x3d10e, // referrerpolicy
+	0x192: 0x15602, // th
+	0x194: 0x53606, // prompt
+	0x195: 0x56807, // section
+	0x197: 0x6d107, // optimum
+	0x198: 0x2db04, // high
+	0x199: 0x15c02, // h1
+	0x19a: 0x65909, // onstalled
+	0x19b: 0x16d03, // var
+	0x19c: 0x4204,  // time
+	0x19e: 0x67402, // ms
+	0x19f: 0x33106, // header
+	0x1a0: 0x4da09, // onmessage
+	0x1a1: 0x1a605, // nonce
+	0x1a2: 0x26e0a, // formaction
+	0x1a3: 0x22006, // center
+	0x1a4: 0x3704,  // nobr
+	0x1a5: 0x59505, // table
+	0x1a6: 0x4a907, // listing
+	0x1a7: 0x18106, // legend
+	0x1a9: 0x29b09, // challenge
+	0x1aa: 0x24806, // figure
+	0x1ab: 0xe605,  // media
+	0x1ae: 0xd904,  // type
+	0x1af: 0x3f04,  // font
+	0x1b0: 0x4da0e, // onmessageerror
+	0x1b1: 0x37108, // seamless
+	0x1b2: 0x8703,  // dfn
+	0x1b3: 0x5c705, // defer
+	0x1b4: 0xc303,  // low
+	0x1b5: 0x19a03, // rtc
+	0x1b6: 0x5230b, // onmouseover
+	0x1b7: 0x2b20a, // novalidate
+	0x1b8: 0x71c0a, // workertype
+	0x1ba: 0x3cd07, // itemref
+	0x1bd: 0x1,     // a
+	0x1be: 0x31803, // map
+	0x1bf: 0x400c,  // ontimeupdate
+	0x1c0: 0x15e07, // bgsound
+	0x1c1: 0x3206,  // keygen
+	0x1c2: 0x2705,  // tbody
+	0x1c5: 0x64406, // onshow
+	0x1c7: 0x2501,  // s
+	0x1c8: 0x6607,  // pattern
+	0x1cc: 0x14d10, // oncanplaythrough
+	0x1ce: 0x2d702, // dd
+	0x1cf: 0x6f906, // srcset
+	0x1d0: 0x17003, // big
+	0x1d2: 0x65108, // sortable
+	0x1d3: 0x48007, // onkeyup
+	0x1d5: 0x5a406, // onplay
+	0x1d7: 0x4b804, // meta
+	0x1d8: 0x40306, // ondrop
+	0x1da: 0x60008, // onscroll
+	0x1db: 0x1fb0b, // crossorigin
+	0x1dc: 0x5730a, // onpageshow
+	0x1dd: 0x4,     // abbr
+	0x1de: 0x9202,  // td
+	0x1df: 0x58b0f, // contenteditable
+	0x1e0: 0x27206, // action
+	0x1e1: 0x1400b, // playsinline
+	0x1e2: 0x43107, // onfocus
+	0x1e3: 0x2e008, // hreflang
+	0x1e5: 0x5160a, // onmouseout
+	0x1e6: 0x5ea07, // onreset
+	0x1e7: 0x13c08, // autoplay
+	0x1e8: 0x63109, // onseeking
+	0x1ea: 0x67506, // scoped
+	0x1ec: 0x30a,   // radiogroup
+	0x1ee: 0x3800b, // contextmenu
+	0x1ef: 0x52e09, // onmouseup
+	0x1f1: 0x2ca06, // hgroup
+	0x1f2: 0x2080f, // allowfullscreen
+	0x1f3: 0x4be08, // tabindex
+	0x1f6: 0x30f07, // isindex
+	0x1f7: 0x1a0e,  // accept-charset
+	0x1f8: 0x2ae0e, // formnovalidate
+	0x1fb: 0x1c90e, // annotation-xml
+	0x1fc: 0x6e05,  // embed
+	0x1fd: 0x21806, // script
+	0x1fe: 0xbb06,  // dialog
+	0x1ff: 0x1d707, // command
+}
+
+const atomText = "abbradiogrouparamainavalueaccept-charsetbodyaccesskeygenobrb" +
+	"asefontimeupdateviacacheightmlabelooptgroupatternoembedetail" +
+	"sampictureversedfnoframesetdirnameterowspanomoduleacronymali" +
+	"gnmarkbdialogallowpaymentrequestrikeytypeallowusermediagroup" +
+	"ingaltfooterubyasyncanvasidefaultitleaudioncancelautofocusan" +
+	"dboxmplaceholderautoplaysinlinebdoncanplaythrough1bgsoundisa" +
+	"bledivarbigblinkindraggablegendblockquotebuttonabortcitempro" +
+	"penoncecolgrouplaintextrackcolorcolspannotation-xmlcommandco" +
+	"ntrolshapecoordslotranslatecrossoriginsmallowfullscreenoscri" +
+	"ptfacenterfieldsetfigcaptionafterprintegrityfigurequiredfore" +
+	"ignObjectforeignobjectformactionautocompleteerrorformenctype" +
+	"mustmatchallengeformmethodformnovalidatetimeformtargethgroup" +
+	"osterhiddenhigh2hreflanghttp-equivideonclickiframeimageimgly" +
+	"ph3isindexismappletitemtypemarqueematheadersortedmaxlength4m" +
+	"inlength5mtextareadonlymultiplemutedoncloseamlessourceoncont" +
+	"extmenuitemidoncopyoncuechangeoncutondblclickondragendondrag" +
+	"enterondragexitemreferrerpolicyondragleaveondragoverondragst" +
+	"articleondropzonemptiedondurationchangeonendedonerroronfocus" +
+	"paceronhashchangeoninputmodeloninvalidonkeydownloadonkeypres" +
+	"spellcheckedonkeyupreloadonlanguagechangeonloadeddatalisting" +
+	"onloadedmetadatabindexonloadendonloadstartonmessageerroronmo" +
+	"usedownonmouseenteronmouseleaveonmousemoveonmouseoutputonmou" +
+	"seoveronmouseupromptonmousewheelonofflineononlineonpagehides" +
+	"classectionbluronpageshowbronpastepublicontenteditableonpaus" +
+	"emaponplayingonpopstateonprogressrcdocodeferonratechangeonre" +
+	"jectionhandledonresetonresizesrclangonscrollonsecuritypolicy" +
+	"violationauxclickonseekedonseekingonselectedonshowidth6onsor" +
+	"tableonstalledonstorageonsubmitemscopedonsuspendontoggleonun" +
+	"handledrejectionbeforeprintonunloadonvolumechangeonwaitingon" +
+	"wheeloptimumanifestrongoptionbeforeunloaddressrcsetstylesumm" +
+	"arysupsvgsystemplateworkertypewrap"

vendor/golang.org/x/net/html/const.go

@@ -0,0 +1,111 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package html
+
+// Section 12.2.4.2 of the HTML5 specification says "The following elements
+// have varying levels of special parsing rules".
+// https://html.spec.whatwg.org/multipage/syntax.html#the-stack-of-open-elements
+var isSpecialElementMap = map[string]bool{
+	"address":    true,
+	"applet":     true,
+	"area":       true,
+	"article":    true,
+	"aside":      true,
+	"base":       true,
+	"basefont":   true,
+	"bgsound":    true,
+	"blockquote": true,
+	"body":       true,
+	"br":         true,
+	"button":     true,
+	"caption":    true,
+	"center":     true,
+	"col":        true,
+	"colgroup":   true,
+	"dd":         true,
+	"details":    true,
+	"dir":        true,
+	"div":        true,
+	"dl":         true,
+	"dt":         true,
+	"embed":      true,
+	"fieldset":   true,
+	"figcaption": true,
+	"figure":     true,
+	"footer":     true,
+	"form":       true,
+	"frame":      true,
+	"frameset":   true,
+	"h1":         true,
+	"h2":         true,
+	"h3":         true,
+	"h4":         true,
+	"h5":         true,
+	"h6":         true,
+	"head":       true,
+	"header":     true,
+	"hgroup":     true,
+	"hr":         true,
+	"html":       true,
+	"iframe":     true,
+	"img":        true,
+	"input":      true,
+	"keygen":     true, // "keygen" has been removed from the spec, but are kept here for backwards compatibility.
+	"li":         true,
+	"link":       true,
+	"listing":    true,
+	"main":       true,
+	"marquee":    true,
+	"menu":       true,
+	"meta":       true,
+	"nav":        true,
+	"noembed":    true,
+	"noframes":   true,
+	"noscript":   true,
+	"object":     true,
+	"ol":         true,
+	"p":          true,
+	"param":      true,
+	"plaintext":  true,
+	"pre":        true,
+	"script":     true,
+	"section":    true,
+	"select":     true,
+	"source":     true,
+	"style":      true,
+	"summary":    true,
+	"table":      true,
+	"tbody":      true,
+	"td":         true,
+	"template":   true,
+	"textarea":   true,
+	"tfoot":      true,
+	"th":         true,
+	"thead":      true,
+	"title":      true,
+	"tr":         true,
+	"track":      true,
+	"ul":         true,
+	"wbr":        true,
+	"xmp":        true,
+}
+
+func isSpecialElement(element *Node) bool {
+	switch element.Namespace {
+	case "", "html":
+		return isSpecialElementMap[element.Data]
+	case "math":
+		switch element.Data {
+		case "mi", "mo", "mn", "ms", "mtext", "annotation-xml":
+			return true
+		}
+	case "svg":
+		switch element.Data {
+		case "foreignObject", "desc", "title":
+			return true
+		}
+	}
+	return false
+}

vendor/golang.org/x/net/html/doc.go

@@ -0,0 +1,127 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+Package html implements an HTML5-compliant tokenizer and parser.
+
+Tokenization is done by creating a Tokenizer for an io.Reader r. It is the
+caller's responsibility to ensure that r provides UTF-8 encoded HTML.
+
+	z := html.NewTokenizer(r)
+
+Given a Tokenizer z, the HTML is tokenized by repeatedly calling z.Next(),
+which parses the next token and returns its type, or an error:
+
+	for {
+		tt := z.Next()
+		if tt == html.ErrorToken {
+			// ...
+			return ...
+		}
+		// Process the current token.
+	}
+
+There are two APIs for retrieving the current token. The high-level API is to
+call Token; the low-level API is to call Text or TagName / TagAttr. Both APIs
+allow optionally calling Raw after Next but before Token, Text, TagName, or
+TagAttr. In EBNF notation, the valid call sequence per token is:
+
+	Next {Raw} [ Token | Text | TagName {TagAttr} ]
+
+Token returns an independent data structure that completely describes a token.
+Entities (such as "<") are unescaped, tag names and attribute keys are
+lower-cased, and attributes are collected into a []Attribute. For example:
+
+	for {
+		if z.Next() == html.ErrorToken {
+			// Returning io.EOF indicates success.
+			return z.Err()
+		}
+		emitToken(z.Token())
+	}
+
+The low-level API performs fewer allocations and copies, but the contents of
+the []byte values returned by Text, TagName and TagAttr may change on the next
+call to Next. For example, to extract an HTML page's anchor text:
+
+	depth := 0
+	for {
+		tt := z.Next()
+		switch tt {
+		case html.ErrorToken:
+			return z.Err()
+		case html.TextToken:
+			if depth > 0 {
+				// emitBytes should copy the []byte it receives,
+				// if it doesn't process it immediately.
+				emitBytes(z.Text())
+			}
+		case html.StartTagToken, html.EndTagToken:
+			tn, _ := z.TagName()
+			if len(tn) == 1 && tn[0] == 'a' {
+				if tt == html.StartTagToken {
+					depth++
+				} else {
+					depth--
+				}
+			}
+		}
+	}
+
+Parsing is done by calling Parse with an io.Reader, which returns the root of
+the parse tree (the document element) as a *Node. It is the caller's
+responsibility to ensure that the Reader provides UTF-8 encoded HTML. For
+example, to process each anchor node in depth-first order:
+
+	doc, err := html.Parse(r)
+	if err != nil {
+		// ...
+	}
+	var f func(*html.Node)
+	f = func(n *html.Node) {
+		if n.Type == html.ElementNode && n.Data == "a" {
+			// Do something with n...
+		}
+		for c := n.FirstChild; c != nil; c = c.NextSibling {
+			f(c)
+		}
+	}
+	f(doc)
+
+The relevant specifications include:
+https://html.spec.whatwg.org/multipage/syntax.html and
+https://html.spec.whatwg.org/multipage/syntax.html#tokenization
+
+# Security Considerations
+
+Care should be taken when parsing and interpreting HTML, whether full documents
+or fragments, within the framework of the HTML specification, especially with
+regard to untrusted inputs.
+
+This package provides both a tokenizer and a parser, which implement the
+tokenization, and tokenization and tree construction stages of the WHATWG HTML
+parsing specification respectively. While the tokenizer parses and normalizes
+individual HTML tokens, only the parser constructs the DOM tree from the
+tokenized HTML, as described in the tree construction stage of the
+specification, dynamically modifying or extending the docuemnt's DOM tree.
+
+If your use case requires semantically well-formed HTML documents, as defined by
+the WHATWG specification, the parser should be used rather than the tokenizer.
+
+In security contexts, if trust decisions are being made using the tokenized or
+parsed content, the input must be re-serialized (for instance by using Render or
+Token.String) in order for those trust decisions to hold, as the process of
+tokenization or parsing may alter the content.
+*/
+package html // import "golang.org/x/net/html"
+
+// The tokenization algorithm implemented by this package is not a line-by-line
+// transliteration of the relatively verbose state-machine in the WHATWG
+// specification. A more direct approach is used instead, where the program
+// counter implies the state, such as whether it is tokenizing a tag or a text
+// node. Specification compliance is verified by checking expected and actual
+// outputs over a test suite rather than aiming for algorithmic fidelity.
+
+// TODO(nigeltao): Does a DOM API belong in this package or a separate one?
+// TODO(nigeltao): How does parsing interact with a JavaScript engine?

vendor/golang.org/x/net/html/doctype.go

@@ -0,0 +1,156 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package html
+
+import (
+	"strings"
+)
+
+// parseDoctype parses the data from a DoctypeToken into a name,
+// public identifier, and system identifier. It returns a Node whose Type
+// is DoctypeNode, whose Data is the name, and which has attributes
+// named "system" and "public" for the two identifiers if they were present.
+// quirks is whether the document should be parsed in "quirks mode".
+func parseDoctype(s string) (n *Node, quirks bool) {
+	n = &Node{Type: DoctypeNode}
+
+	// Find the name.
+	space := strings.IndexAny(s, whitespace)
+	if space == -1 {
+		space = len(s)
+	}
+	n.Data = s[:space]
+	// The comparison to "html" is case-sensitive.
+	if n.Data != "html" {
+		quirks = true
+	}
+	n.Data = strings.ToLower(n.Data)
+	s = strings.TrimLeft(s[space:], whitespace)
+
+	if len(s) < 6 {
+		// It can't start with "PUBLIC" or "SYSTEM".
+		// Ignore the rest of the string.
+		return n, quirks || s != ""
+	}
+
+	key := strings.ToLower(s[:6])
+	s = s[6:]
+	for key == "public" || key == "system" {
+		s = strings.TrimLeft(s, whitespace)
+		if s == "" {
+			break
+		}
+		quote := s[0]
+		if quote != '"' && quote != '\'' {
+			break
+		}
+		s = s[1:]
+		q := strings.IndexRune(s, rune(quote))
+		var id string
+		if q == -1 {
+			id = s
+			s = ""
+		} else {
+			id = s[:q]
+			s = s[q+1:]
+		}
+		n.Attr = append(n.Attr, Attribute{Key: key, Val: id})
+		if key == "public" {
+			key = "system"
+		} else {
+			key = ""
+		}
+	}
+
+	if key != "" || s != "" {
+		quirks = true
+	} else if len(n.Attr) > 0 {
+		if n.Attr[0].Key == "public" {
+			public := strings.ToLower(n.Attr[0].Val)
+			switch public {
+			case "-//w3o//dtd w3 html strict 3.0//en//", "-/w3d/dtd html 4.0 transitional/en", "html":
+				quirks = true
+			default:
+				for _, q := range quirkyIDs {
+					if strings.HasPrefix(public, q) {
+						quirks = true
+						break
+					}
+				}
+			}
+			// The following two public IDs only cause quirks mode if there is no system ID.
+			if len(n.Attr) == 1 && (strings.HasPrefix(public, "-//w3c//dtd html 4.01 frameset//") ||
+				strings.HasPrefix(public, "-//w3c//dtd html 4.01 transitional//")) {
+				quirks = true
+			}
+		}
+		if lastAttr := n.Attr[len(n.Attr)-1]; lastAttr.Key == "system" &&
+			strings.ToLower(lastAttr.Val) == "http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd" {
+			quirks = true
+		}
+	}
+
+	return n, quirks
+}
+
+// quirkyIDs is a list of public doctype identifiers that cause a document
+// to be interpreted in quirks mode. The identifiers should be in lower case.
+var quirkyIDs = []string{
+	"+//silmaril//dtd html pro v0r11 19970101//",
+	"-//advasoft ltd//dtd html 3.0 aswedit + extensions//",
+	"-//as//dtd html 3.0 aswedit + extensions//",
+	"-//ietf//dtd html 2.0 level 1//",
+	"-//ietf//dtd html 2.0 level 2//",
+	"-//ietf//dtd html 2.0 strict level 1//",
+	"-//ietf//dtd html 2.0 strict level 2//",
+	"-//ietf//dtd html 2.0 strict//",
+	"-//ietf//dtd html 2.0//",
+	"-//ietf//dtd html 2.1e//",
+	"-//ietf//dtd html 3.0//",
+	"-//ietf//dtd html 3.2 final//",
+	"-//ietf//dtd html 3.2//",
+	"-//ietf//dtd html 3//",
+	"-//ietf//dtd html level 0//",
+	"-//ietf//dtd html level 1//",
+	"-//ietf//dtd html level 2//",
+	"-//ietf//dtd html level 3//",
+	"-//ietf//dtd html strict level 0//",
+	"-//ietf//dtd html strict level 1//",
+	"-//ietf//dtd html strict level 2//",
+	"-//ietf//dtd html strict level 3//",
+	"-//ietf//dtd html strict//",
+	"-//ietf//dtd html//",
+	"-//metrius//dtd metrius presentational//",
+	"-//microsoft//dtd internet explorer 2.0 html strict//",
+	"-//microsoft//dtd internet explorer 2.0 html//",
+	"-//microsoft//dtd internet explorer 2.0 tables//",
+	"-//microsoft//dtd internet explorer 3.0 html strict//",
+	"-//microsoft//dtd internet explorer 3.0 html//",
+	"-//microsoft//dtd internet explorer 3.0 tables//",
+	"-//netscape comm. corp.//dtd html//",
+	"-//netscape comm. corp.//dtd strict html//",
+	"-//o'reilly and associates//dtd html 2.0//",
+	"-//o'reilly and associates//dtd html extended 1.0//",
+	"-//o'reilly and associates//dtd html extended relaxed 1.0//",
+	"-//softquad software//dtd hotmetal pro 6.0::19990601::extensions to html 4.0//",
+	"-//softquad//dtd hotmetal pro 4.0::19971010::extensions to html 4.0//",
+	"-//spyglass//dtd html 2.0 extended//",
+	"-//sq//dtd html 2.0 hotmetal + extensions//",
+	"-//sun microsystems corp.//dtd hotjava html//",
+	"-//sun microsystems corp.//dtd hotjava strict html//",
+	"-//w3c//dtd html 3 1995-03-24//",
+	"-//w3c//dtd html 3.2 draft//",
+	"-//w3c//dtd html 3.2 final//",
+	"-//w3c//dtd html 3.2//",
+	"-//w3c//dtd html 3.2s draft//",
+	"-//w3c//dtd html 4.0 frameset//",
+	"-//w3c//dtd html 4.0 transitional//",
+	"-//w3c//dtd html experimental 19960712//",
+	"-//w3c//dtd html experimental 970421//",
+	"-//w3c//dtd w3 html//",
+	"-//w3o//dtd w3 html 3.0//",
+	"-//webtechs//dtd mozilla html 2.0//",
+	"-//webtechs//dtd mozilla html//",
+}

vendor/golang.org/x/net/html/escape.go

@@ -0,0 +1,339 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package html
+
+import (
+	"bytes"
+	"strings"
+	"unicode/utf8"
+)
+
+// These replacements permit compatibility with old numeric entities that
+// assumed Windows-1252 encoding.
+// https://html.spec.whatwg.org/multipage/syntax.html#consume-a-character-reference
+var replacementTable = [...]rune{
+	'\u20AC', // First entry is what 0x80 should be replaced with.
+	'\u0081',
+	'\u201A',
+	'\u0192',
+	'\u201E',
+	'\u2026',
+	'\u2020',
+	'\u2021',
+	'\u02C6',
+	'\u2030',
+	'\u0160',
+	'\u2039',
+	'\u0152',
+	'\u008D',
+	'\u017D',
+	'\u008F',
+	'\u0090',
+	'\u2018',
+	'\u2019',
+	'\u201C',
+	'\u201D',
+	'\u2022',
+	'\u2013',
+	'\u2014',
+	'\u02DC',
+	'\u2122',
+	'\u0161',
+	'\u203A',
+	'\u0153',
+	'\u009D',
+	'\u017E',
+	'\u0178', // Last entry is 0x9F.
+	// 0x00->'\uFFFD' is handled programmatically.
+	// 0x0D->'\u000D' is a no-op.
+}
+
+// unescapeEntity reads an entity like "<" from b[src:] and writes the
+// corresponding "<" to b[dst:], returning the incremented dst and src cursors.
+// Precondition: b[src] == '&' && dst <= src.
+// attribute should be true if parsing an attribute value.
+func unescapeEntity(b []byte, dst, src int, attribute bool) (dst1, src1 int) {
+	// https://html.spec.whatwg.org/multipage/syntax.html#consume-a-character-reference
+
+	// i starts at 1 because we already know that s[0] == '&'.
+	i, s := 1, b[src:]
+
+	if len(s) <= 1 {
+		b[dst] = b[src]
+		return dst + 1, src + 1
+	}
+
+	if s[i] == '#' {
+		if len(s) <= 3 { // We need to have at least "&#.".
+			b[dst] = b[src]
+			return dst + 1, src + 1
+		}
+		i++
+		c := s[i]
+		hex := false
+		if c == 'x' || c == 'X' {
+			hex = true
+			i++
+		}
+
+		x := '\x00'
+		for i < len(s) {
+			c = s[i]
+			i++
+			if hex {
+				if '0' <= c && c <= '9' {
+					x = 16*x + rune(c) - '0'
+					continue
+				} else if 'a' <= c && c <= 'f' {
+					x = 16*x + rune(c) - 'a' + 10
+					continue
+				} else if 'A' <= c && c <= 'F' {
+					x = 16*x + rune(c) - 'A' + 10
+					continue
+				}
+			} else if '0' <= c && c <= '9' {
+				x = 10*x + rune(c) - '0'
+				continue
+			}
+			if c != ';' {
+				i--
+			}
+			break
+		}
+
+		if i <= 3 { // No characters matched.
+			b[dst] = b[src]
+			return dst + 1, src + 1
+		}
+
+		if 0x80 <= x && x <= 0x9F {
+			// Replace characters from Windows-1252 with UTF-8 equivalents.
+			x = replacementTable[x-0x80]
+		} else if x == 0 || (0xD800 <= x && x <= 0xDFFF) || x > 0x10FFFF {
+			// Replace invalid characters with the replacement character.
+			x = '\uFFFD'
+		}
+
+		return dst + utf8.EncodeRune(b[dst:], x), src + i
+	}
+
+	// Consume the maximum number of characters possible, with the
+	// consumed characters matching one of the named references.
+
+	for i < len(s) {
+		c := s[i]
+		i++
+		// Lower-cased characters are more common in entities, so we check for them first.
+		if 'a' <= c && c <= 'z' || 'A' <= c && c <= 'Z' || '0' <= c && c <= '9' {
+			continue
+		}
+		if c != ';' {
+			i--
+		}
+		break
+	}
+
+	entityName := string(s[1:i])
+	if entityName == "" {
+		// No-op.
+	} else if attribute && entityName[len(entityName)-1] != ';' && len(s) > i && s[i] == '=' {
+		// No-op.
+	} else if x := entity[entityName]; x != 0 {
+		return dst + utf8.EncodeRune(b[dst:], x), src + i
+	} else if x := entity2[entityName]; x[0] != 0 {
+		dst1 := dst + utf8.EncodeRune(b[dst:], x[0])
+		return dst1 + utf8.EncodeRune(b[dst1:], x[1]), src + i
+	} else if !attribute {
+		maxLen := len(entityName) - 1
+		if maxLen > longestEntityWithoutSemicolon {
+			maxLen = longestEntityWithoutSemicolon
+		}
+		for j := maxLen; j > 1; j-- {
+			if x := entity[entityName[:j]]; x != 0 {
+				return dst + utf8.EncodeRune(b[dst:], x), src + j + 1
+			}
+		}
+	}
+
+	dst1, src1 = dst+i, src+i
+	copy(b[dst:dst1], b[src:src1])
+	return dst1, src1
+}
+
+// unescape unescapes b's entities in-place, so that "a&lt;b" becomes "a<b".
+// attribute should be true if parsing an attribute value.
+func unescape(b []byte, attribute bool) []byte {
+	for i, c := range b {
+		if c == '&' {
+			dst, src := unescapeEntity(b, i, i, attribute)
+			for src < len(b) {
+				c := b[src]
+				if c == '&' {
+					dst, src = unescapeEntity(b, dst, src, attribute)
+				} else {
+					b[dst] = c
+					dst, src = dst+1, src+1
+				}
+			}
+			return b[0:dst]
+		}
+	}
+	return b
+}
+
+// lower lower-cases the A-Z bytes in b in-place, so that "aBc" becomes "abc".
+func lower(b []byte) []byte {
+	for i, c := range b {
+		if 'A' <= c && c <= 'Z' {
+			b[i] = c + 'a' - 'A'
+		}
+	}
+	return b
+}
+
+// escapeComment is like func escape but escapes its input bytes less often.
+// Per https://github.com/golang/go/issues/58246 some HTML comments are (1)
+// meaningful and (2) contain angle brackets that we'd like to avoid escaping
+// unless we have to.
+//
+// "We have to" includes the '&' byte, since that introduces other escapes.
+//
+// It also includes those bytes (not including EOF) that would otherwise end
+// the comment. Per the summary table at the bottom of comment_test.go, this is
+// the '>' byte that, per above, we'd like to avoid escaping unless we have to.
+//
+// Studying the summary table (and T actions in its '>' column) closely, we
+// only need to escape in states 43, 44, 49, 51 and 52. State 43 is at the
+// start of the comment data. State 52 is after a '!'. The other three states
+// are after a '-'.
+//
+// Our algorithm is thus to escape every '&' and to escape '>' if and only if:
+//   - The '>' is after a '!' or '-' (in the unescaped data) or
+//   - The '>' is at the start of the comment data (after the opening "<!--").
+func escapeComment(w writer, s string) error {
+	// When modifying this function, consider manually increasing the
+	// maxSuffixLen constant in func TestComments, from 6 to e.g. 9 or more.
+	// That increase should only be temporary, not committed, as it
+	// exponentially affects the test running time.
+
+	if len(s) == 0 {
+		return nil
+	}
+
+	// Loop:
+	//   - Grow j such that s[i:j] does not need escaping.
+	//   - If s[j] does need escaping, output s[i:j] and an escaped s[j],
+	//     resetting i and j to point past that s[j] byte.
+	i := 0
+	for j := 0; j < len(s); j++ {
+		escaped := ""
+		switch s[j] {
+		case '&':
+			escaped = "&amp;"
+
+		case '>':
+			if j > 0 {
+				if prev := s[j-1]; (prev != '!') && (prev != '-') {
+					continue
+				}
+			}
+			escaped = "&gt;"
+
+		default:
+			continue
+		}
+
+		if i < j {
+			if _, err := w.WriteString(s[i:j]); err != nil {
+				return err
+			}
+		}
+		if _, err := w.WriteString(escaped); err != nil {
+			return err
+		}
+		i = j + 1
+	}
+
+	if i < len(s) {
+		if _, err := w.WriteString(s[i:]); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// escapeCommentString is to EscapeString as escapeComment is to escape.
+func escapeCommentString(s string) string {
+	if strings.IndexAny(s, "&>") == -1 {
+		return s
+	}
+	var buf bytes.Buffer
+	escapeComment(&buf, s)
+	return buf.String()
+}
+
+const escapedChars = "&'<>\"\r"
+
+func escape(w writer, s string) error {
+	i := strings.IndexAny(s, escapedChars)
+	for i != -1 {
+		if _, err := w.WriteString(s[:i]); err != nil {
+			return err
+		}
+		var esc string
+		switch s[i] {
+		case '&':
+			esc = "&amp;"
+		case '\'':
+			// "&#39;" is shorter than "&apos;" and apos was not in HTML until HTML5.
+			esc = "&#39;"
+		case '<':
+			esc = "&lt;"
+		case '>':
+			esc = "&gt;"
+		case '"':
+			// "&#34;" is shorter than "&quot;".
+			esc = "&#34;"
+		case '\r':
+			esc = "&#13;"
+		default:
+			panic("unrecognized escape character")
+		}
+		s = s[i+1:]
+		if _, err := w.WriteString(esc); err != nil {
+			return err
+		}
+		i = strings.IndexAny(s, escapedChars)
+	}
+	_, err := w.WriteString(s)
+	return err
+}
+
+// EscapeString escapes special characters like "<" to become "&lt;". It
+// escapes only five such characters: <, >, &, ' and ".
+// UnescapeString(EscapeString(s)) == s always holds, but the converse isn't
+// always true.
+func EscapeString(s string) string {
+	if strings.IndexAny(s, escapedChars) == -1 {
+		return s
+	}
+	var buf bytes.Buffer
+	escape(&buf, s)
+	return buf.String()
+}
+
+// UnescapeString unescapes entities like "&lt;" to become "<". It unescapes a
+// larger range of entities than EscapeString escapes. For example, "&aacute;"
+// unescapes to "á", as does "&#225;" and "&xE1;".
+// UnescapeString(EscapeString(s)) == s always holds, but the converse isn't
+// always true.
+func UnescapeString(s string) string {
+	for _, c := range s {
+		if c == '&' {
+			return string(unescape([]byte(s), false))
+		}
+	}
+	return s
+}

vendor/golang.org/x/net/html/foreign.go

@@ -0,0 +1,222 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package html
+
+import (
+	"strings"
+)
+
+func adjustAttributeNames(aa []Attribute, nameMap map[string]string) {
+	for i := range aa {
+		if newName, ok := nameMap[aa[i].Key]; ok {
+			aa[i].Key = newName
+		}
+	}
+}
+
+func adjustForeignAttributes(aa []Attribute) {
+	for i, a := range aa {
+		if a.Key == "" || a.Key[0] != 'x' {
+			continue
+		}
+		switch a.Key {
+		case "xlink:actuate", "xlink:arcrole", "xlink:href", "xlink:role", "xlink:show",
+			"xlink:title", "xlink:type", "xml:base", "xml:lang", "xml:space", "xmlns:xlink":
+			j := strings.Index(a.Key, ":")
+			aa[i].Namespace = a.Key[:j]
+			aa[i].Key = a.Key[j+1:]
+		}
+	}
+}
+
+func htmlIntegrationPoint(n *Node) bool {
+	if n.Type != ElementNode {
+		return false
+	}
+	switch n.Namespace {
+	case "math":
+		if n.Data == "annotation-xml" {
+			for _, a := range n.Attr {
+				if a.Key == "encoding" {
+					val := strings.ToLower(a.Val)
+					if val == "text/html" || val == "application/xhtml+xml" {
+						return true
+					}
+				}
+			}
+		}
+	case "svg":
+		switch n.Data {
+		case "desc", "foreignObject", "title":
+			return true
+		}
+	}
+	return false
+}
+
+func mathMLTextIntegrationPoint(n *Node) bool {
+	if n.Namespace != "math" {
+		return false
+	}
+	switch n.Data {
+	case "mi", "mo", "mn", "ms", "mtext":
+		return true
+	}
+	return false
+}
+
+// Section 12.2.6.5.
+var breakout = map[string]bool{
+	"b":          true,
+	"big":        true,
+	"blockquote": true,
+	"body":       true,
+	"br":         true,
+	"center":     true,
+	"code":       true,
+	"dd":         true,
+	"div":        true,
+	"dl":         true,
+	"dt":         true,
+	"em":         true,
+	"embed":      true,
+	"h1":         true,
+	"h2":         true,
+	"h3":         true,
+	"h4":         true,
+	"h5":         true,
+	"h6":         true,
+	"head":       true,
+	"hr":         true,
+	"i":          true,
+	"img":        true,
+	"li":         true,
+	"listing":    true,
+	"menu":       true,
+	"meta":       true,
+	"nobr":       true,
+	"ol":         true,
+	"p":          true,
+	"pre":        true,
+	"ruby":       true,
+	"s":          true,
+	"small":      true,
+	"span":       true,
+	"strong":     true,
+	"strike":     true,
+	"sub":        true,
+	"sup":        true,
+	"table":      true,
+	"tt":         true,
+	"u":          true,
+	"ul":         true,
+	"var":        true,
+}
+
+// Section 12.2.6.5.
+var svgTagNameAdjustments = map[string]string{
+	"altglyph":            "altGlyph",
+	"altglyphdef":         "altGlyphDef",
+	"altglyphitem":        "altGlyphItem",
+	"animatecolor":        "animateColor",
+	"animatemotion":       "animateMotion",
+	"animatetransform":    "animateTransform",
+	"clippath":            "clipPath",
+	"feblend":             "feBlend",
+	"fecolormatrix":       "feColorMatrix",
+	"fecomponenttransfer": "feComponentTransfer",
+	"fecomposite":         "feComposite",
+	"feconvolvematrix":    "feConvolveMatrix",
+	"fediffuselighting":   "feDiffuseLighting",
+	"fedisplacementmap":   "feDisplacementMap",
+	"fedistantlight":      "feDistantLight",
+	"feflood":             "feFlood",
+	"fefunca":             "feFuncA",
+	"fefuncb":             "feFuncB",
+	"fefuncg":             "feFuncG",
+	"fefuncr":             "feFuncR",
+	"fegaussianblur":      "feGaussianBlur",
+	"feimage":             "feImage",
+	"femerge":             "feMerge",
+	"femergenode":         "feMergeNode",
+	"femorphology":        "feMorphology",
+	"feoffset":            "feOffset",
+	"fepointlight":        "fePointLight",
+	"fespecularlighting":  "feSpecularLighting",
+	"fespotlight":         "feSpotLight",
+	"fetile":              "feTile",
+	"feturbulence":        "feTurbulence",
+	"foreignobject":       "foreignObject",
+	"glyphref":            "glyphRef",
+	"lineargradient":      "linearGradient",
+	"radialgradient":      "radialGradient",
+	"textpath":            "textPath",
+}
+
+// Section 12.2.6.1
+var mathMLAttributeAdjustments = map[string]string{
+	"definitionurl": "definitionURL",
+}
+
+var svgAttributeAdjustments = map[string]string{
+	"attributename":       "attributeName",
+	"attributetype":       "attributeType",
+	"basefrequency":       "baseFrequency",
+	"baseprofile":         "baseProfile",
+	"calcmode":            "calcMode",
+	"clippathunits":       "clipPathUnits",
+	"diffuseconstant":     "diffuseConstant",
+	"edgemode":            "edgeMode",
+	"filterunits":         "filterUnits",
+	"glyphref":            "glyphRef",
+	"gradienttransform":   "gradientTransform",
+	"gradientunits":       "gradientUnits",
+	"kernelmatrix":        "kernelMatrix",
+	"kernelunitlength":    "kernelUnitLength",
+	"keypoints":           "keyPoints",
+	"keysplines":          "keySplines",
+	"keytimes":            "keyTimes",
+	"lengthadjust":        "lengthAdjust",
+	"limitingconeangle":   "limitingConeAngle",
+	"markerheight":        "markerHeight",
+	"markerunits":         "markerUnits",
+	"markerwidth":         "markerWidth",
+	"maskcontentunits":    "maskContentUnits",
+	"maskunits":           "maskUnits",
+	"numoctaves":          "numOctaves",
+	"pathlength":          "pathLength",
+	"patterncontentunits": "patternContentUnits",
+	"patterntransform":    "patternTransform",
+	"patternunits":        "patternUnits",
+	"pointsatx":           "pointsAtX",
+	"pointsaty":           "pointsAtY",
+	"pointsatz":           "pointsAtZ",
+	"preservealpha":       "preserveAlpha",
+	"preserveaspectratio": "preserveAspectRatio",
+	"primitiveunits":      "primitiveUnits",
+	"refx":                "refX",
+	"refy":                "refY",
+	"repeatcount":         "repeatCount",
+	"repeatdur":           "repeatDur",
+	"requiredextensions":  "requiredExtensions",
+	"requiredfeatures":    "requiredFeatures",
+	"specularconstant":    "specularConstant",
+	"specularexponent":    "specularExponent",
+	"spreadmethod":        "spreadMethod",
+	"startoffset":         "startOffset",
+	"stddeviation":        "stdDeviation",
+	"stitchtiles":         "stitchTiles",
+	"surfacescale":        "surfaceScale",
+	"systemlanguage":      "systemLanguage",
+	"tablevalues":         "tableValues",
+	"targetx":             "targetX",
+	"targety":             "targetY",
+	"textlength":          "textLength",
+	"viewbox":             "viewBox",
+	"viewtarget":          "viewTarget",
+	"xchannelselector":    "xChannelSelector",
+	"ychannelselector":    "yChannelSelector",
+	"zoomandpan":          "zoomAndPan",
+}

vendor/golang.org/x/net/html/node.go

@@ -0,0 +1,225 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package html
+
+import (
+	"golang.org/x/net/html/atom"
+)
+
+// A NodeType is the type of a Node.
+type NodeType uint32
+
+const (
+	ErrorNode NodeType = iota
+	TextNode
+	DocumentNode
+	ElementNode
+	CommentNode
+	DoctypeNode
+	// RawNode nodes are not returned by the parser, but can be part of the
+	// Node tree passed to func Render to insert raw HTML (without escaping).
+	// If so, this package makes no guarantee that the rendered HTML is secure
+	// (from e.g. Cross Site Scripting attacks) or well-formed.
+	RawNode
+	scopeMarkerNode
+)
+
+// Section 12.2.4.3 says "The markers are inserted when entering applet,
+// object, marquee, template, td, th, and caption elements, and are used
+// to prevent formatting from "leaking" into applet, object, marquee,
+// template, td, th, and caption elements".
+var scopeMarker = Node{Type: scopeMarkerNode}
+
+// A Node consists of a NodeType and some Data (tag name for element nodes,
+// content for text) and are part of a tree of Nodes. Element nodes may also
+// have a Namespace and contain a slice of Attributes. Data is unescaped, so
+// that it looks like "a<b" rather than "a&lt;b". For element nodes, DataAtom
+// is the atom for Data, or zero if Data is not a known tag name.
+//
+// An empty Namespace implies a "http://www.w3.org/1999/xhtml" namespace.
+// Similarly, "math" is short for "http://www.w3.org/1998/Math/MathML", and
+// "svg" is short for "http://www.w3.org/2000/svg".
+type Node struct {
+	Parent, FirstChild, LastChild, PrevSibling, NextSibling *Node
+
+	Type      NodeType
+	DataAtom  atom.Atom
+	Data      string
+	Namespace string
+	Attr      []Attribute
+}
+
+// InsertBefore inserts newChild as a child of n, immediately before oldChild
+// in the sequence of n's children. oldChild may be nil, in which case newChild
+// is appended to the end of n's children.
+//
+// It will panic if newChild already has a parent or siblings.
+func (n *Node) InsertBefore(newChild, oldChild *Node) {
+	if newChild.Parent != nil || newChild.PrevSibling != nil || newChild.NextSibling != nil {
+		panic("html: InsertBefore called for an attached child Node")
+	}
+	var prev, next *Node
+	if oldChild != nil {
+		prev, next = oldChild.PrevSibling, oldChild
+	} else {
+		prev = n.LastChild
+	}
+	if prev != nil {
+		prev.NextSibling = newChild
+	} else {
+		n.FirstChild = newChild
+	}
+	if next != nil {
+		next.PrevSibling = newChild
+	} else {
+		n.LastChild = newChild
+	}
+	newChild.Parent = n
+	newChild.PrevSibling = prev
+	newChild.NextSibling = next
+}
+
+// AppendChild adds a node c as a child of n.
+//
+// It will panic if c already has a parent or siblings.
+func (n *Node) AppendChild(c *Node) {
+	if c.Parent != nil || c.PrevSibling != nil || c.NextSibling != nil {
+		panic("html: AppendChild called for an attached child Node")
+	}
+	last := n.LastChild
+	if last != nil {
+		last.NextSibling = c
+	} else {
+		n.FirstChild = c
+	}
+	n.LastChild = c
+	c.Parent = n
+	c.PrevSibling = last
+}
+
+// RemoveChild removes a node c that is a child of n. Afterwards, c will have
+// no parent and no siblings.
+//
+// It will panic if c's parent is not n.
+func (n *Node) RemoveChild(c *Node) {
+	if c.Parent != n {
+		panic("html: RemoveChild called for a non-child Node")
+	}
+	if n.FirstChild == c {
+		n.FirstChild = c.NextSibling
+	}
+	if c.NextSibling != nil {
+		c.NextSibling.PrevSibling = c.PrevSibling
+	}
+	if n.LastChild == c {
+		n.LastChild = c.PrevSibling
+	}
+	if c.PrevSibling != nil {
+		c.PrevSibling.NextSibling = c.NextSibling
+	}
+	c.Parent = nil
+	c.PrevSibling = nil
+	c.NextSibling = nil
+}
+
+// reparentChildren reparents all of src's child nodes to dst.
+func reparentChildren(dst, src *Node) {
+	for {
+		child := src.FirstChild
+		if child == nil {
+			break
+		}
+		src.RemoveChild(child)
+		dst.AppendChild(child)
+	}
+}
+
+// clone returns a new node with the same type, data and attributes.
+// The clone has no parent, no siblings and no children.
+func (n *Node) clone() *Node {
+	m := &Node{
+		Type:     n.Type,
+		DataAtom: n.DataAtom,
+		Data:     n.Data,
+		Attr:     make([]Attribute, len(n.Attr)),
+	}
+	copy(m.Attr, n.Attr)
+	return m
+}
+
+// nodeStack is a stack of nodes.
+type nodeStack []*Node
+
+// pop pops the stack. It will panic if s is empty.
+func (s *nodeStack) pop() *Node {
+	i := len(*s)
+	n := (*s)[i-1]
+	*s = (*s)[:i-1]
+	return n
+}
+
+// top returns the most recently pushed node, or nil if s is empty.
+func (s *nodeStack) top() *Node {
+	if i := len(*s); i > 0 {
+		return (*s)[i-1]
+	}
+	return nil
+}
+
+// index returns the index of the top-most occurrence of n in the stack, or -1
+// if n is not present.
+func (s *nodeStack) index(n *Node) int {
+	for i := len(*s) - 1; i >= 0; i-- {
+		if (*s)[i] == n {
+			return i
+		}
+	}
+	return -1
+}
+
+// contains returns whether a is within s.
+func (s *nodeStack) contains(a atom.Atom) bool {
+	for _, n := range *s {
+		if n.DataAtom == a && n.Namespace == "" {
+			return true
+		}
+	}
+	return false
+}
+
+// insert inserts a node at the given index.
+func (s *nodeStack) insert(i int, n *Node) {
+	(*s) = append(*s, nil)
+	copy((*s)[i+1:], (*s)[i:])
+	(*s)[i] = n
+}
+
+// remove removes a node from the stack. It is a no-op if n is not present.
+func (s *nodeStack) remove(n *Node) {
+	i := s.index(n)
+	if i == -1 {
+		return
+	}
+	copy((*s)[i:], (*s)[i+1:])
+	j := len(*s) - 1
+	(*s)[j] = nil
+	*s = (*s)[:j]
+}
+
+type insertionModeStack []insertionMode
+
+func (s *insertionModeStack) pop() (im insertionMode) {
+	i := len(*s)
+	im = (*s)[i-1]
+	*s = (*s)[:i-1]
+	return im
+}
+
+func (s *insertionModeStack) top() insertionMode {
+	if i := len(*s); i > 0 {
+		return (*s)[i-1]
+	}
+	return nil
+}

vendor/golang.org/x/net/html/render.go

@@ -0,0 +1,293 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package html
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"io"
+	"strings"
+)
+
+type writer interface {
+	io.Writer
+	io.ByteWriter
+	WriteString(string) (int, error)
+}
+
+// Render renders the parse tree n to the given writer.
+//
+// Rendering is done on a 'best effort' basis: calling Parse on the output of
+// Render will always result in something similar to the original tree, but it
+// is not necessarily an exact clone unless the original tree was 'well-formed'.
+// 'Well-formed' is not easily specified; the HTML5 specification is
+// complicated.
+//
+// Calling Parse on arbitrary input typically results in a 'well-formed' parse
+// tree. However, it is possible for Parse to yield a 'badly-formed' parse tree.
+// For example, in a 'well-formed' parse tree, no <a> element is a child of
+// another <a> element: parsing "<a><a>" results in two sibling elements.
+// Similarly, in a 'well-formed' parse tree, no <a> element is a child of a
+// <table> element: parsing "<p><table><a>" results in a <p> with two sibling
+// children; the <a> is reparented to the <table>'s parent. However, calling
+// Parse on "<a><table><a>" does not return an error, but the result has an <a>
+// element with an <a> child, and is therefore not 'well-formed'.
+//
+// Programmatically constructed trees are typically also 'well-formed', but it
+// is possible to construct a tree that looks innocuous but, when rendered and
+// re-parsed, results in a different tree. A simple example is that a solitary
+// text node would become a tree containing <html>, <head> and <body> elements.
+// Another example is that the programmatic equivalent of "a<head>b</head>c"
+// becomes "<html><head><head/><body>abc</body></html>".
+func Render(w io.Writer, n *Node) error {
+	if x, ok := w.(writer); ok {
+		return render(x, n)
+	}
+	buf := bufio.NewWriter(w)
+	if err := render(buf, n); err != nil {
+		return err
+	}
+	return buf.Flush()
+}
+
+// plaintextAbort is returned from render1 when a <plaintext> element
+// has been rendered. No more end tags should be rendered after that.
+var plaintextAbort = errors.New("html: internal error (plaintext abort)")
+
+func render(w writer, n *Node) error {
+	err := render1(w, n)
+	if err == plaintextAbort {
+		err = nil
+	}
+	return err
+}
+
+func render1(w writer, n *Node) error {
+	// Render non-element nodes; these are the easy cases.
+	switch n.Type {
+	case ErrorNode:
+		return errors.New("html: cannot render an ErrorNode node")
+	case TextNode:
+		return escape(w, n.Data)
+	case DocumentNode:
+		for c := n.FirstChild; c != nil; c = c.NextSibling {
+			if err := render1(w, c); err != nil {
+				return err
+			}
+		}
+		return nil
+	case ElementNode:
+		// No-op.
+	case CommentNode:
+		if _, err := w.WriteString("<!--"); err != nil {
+			return err
+		}
+		if err := escapeComment(w, n.Data); err != nil {
+			return err
+		}
+		if _, err := w.WriteString("-->"); err != nil {
+			return err
+		}
+		return nil
+	case DoctypeNode:
+		if _, err := w.WriteString("<!DOCTYPE "); err != nil {
+			return err
+		}
+		if err := escape(w, n.Data); err != nil {
+			return err
+		}
+		if n.Attr != nil {
+			var p, s string
+			for _, a := range n.Attr {
+				switch a.Key {
+				case "public":
+					p = a.Val
+				case "system":
+					s = a.Val
+				}
+			}
+			if p != "" {
+				if _, err := w.WriteString(" PUBLIC "); err != nil {
+					return err
+				}
+				if err := writeQuoted(w, p); err != nil {
+					return err
+				}
+				if s != "" {
+					if err := w.WriteByte(' '); err != nil {
+						return err
+					}
+					if err := writeQuoted(w, s); err != nil {
+						return err
+					}
+				}
+			} else if s != "" {
+				if _, err := w.WriteString(" SYSTEM "); err != nil {
+					return err
+				}
+				if err := writeQuoted(w, s); err != nil {
+					return err
+				}
+			}
+		}
+		return w.WriteByte('>')
+	case RawNode:
+		_, err := w.WriteString(n.Data)
+		return err
+	default:
+		return errors.New("html: unknown node type")
+	}
+
+	// Render the <xxx> opening tag.
+	if err := w.WriteByte('<'); err != nil {
+		return err
+	}
+	if _, err := w.WriteString(n.Data); err != nil {
+		return err
+	}
+	for _, a := range n.Attr {
+		if err := w.WriteByte(' '); err != nil {
+			return err
+		}
+		if a.Namespace != "" {
+			if _, err := w.WriteString(a.Namespace); err != nil {
+				return err
+			}
+			if err := w.WriteByte(':'); err != nil {
+				return err
+			}
+		}
+		if _, err := w.WriteString(a.Key); err != nil {
+			return err
+		}
+		if _, err := w.WriteString(`="`); err != nil {
+			return err
+		}
+		if err := escape(w, a.Val); err != nil {
+			return err
+		}
+		if err := w.WriteByte('"'); err != nil {
+			return err
+		}
+	}
+	if voidElements[n.Data] {
+		if n.FirstChild != nil {
+			return fmt.Errorf("html: void element <%s> has child nodes", n.Data)
+		}
+		_, err := w.WriteString("/>")
+		return err
+	}
+	if err := w.WriteByte('>'); err != nil {
+		return err
+	}
+
+	// Add initial newline where there is danger of a newline beging ignored.
+	if c := n.FirstChild; c != nil && c.Type == TextNode && strings.HasPrefix(c.Data, "\n") {
+		switch n.Data {
+		case "pre", "listing", "textarea":
+			if err := w.WriteByte('\n'); err != nil {
+				return err
+			}
+		}
+	}
+
+	// Render any child nodes
+	if childTextNodesAreLiteral(n) {
+		for c := n.FirstChild; c != nil; c = c.NextSibling {
+			if c.Type == TextNode {
+				if _, err := w.WriteString(c.Data); err != nil {
+					return err
+				}
+			} else {
+				if err := render1(w, c); err != nil {
+					return err
+				}
+			}
+		}
+		if n.Data == "plaintext" {
+			// Don't render anything else. <plaintext> must be the
+			// last element in the file, with no closing tag.
+			return plaintextAbort
+		}
+	} else {
+		for c := n.FirstChild; c != nil; c = c.NextSibling {
+			if err := render1(w, c); err != nil {
+				return err
+			}
+		}
+	}
+
+	// Render the </xxx> closing tag.
+	if _, err := w.WriteString("</"); err != nil {
+		return err
+	}
+	if _, err := w.WriteString(n.Data); err != nil {
+		return err
+	}
+	return w.WriteByte('>')
+}
+
+func childTextNodesAreLiteral(n *Node) bool {
+	// Per WHATWG HTML 13.3, if the parent of the current node is a style,
+	// script, xmp, iframe, noembed, noframes, or plaintext element, and the
+	// current node is a text node, append the value of the node's data
+	// literally. The specification is not explicit about it, but we only
+	// enforce this if we are in the HTML namespace (i.e. when the namespace is
+	// "").
+	// NOTE: we also always include noscript elements, although the
+	// specification states that they should only be rendered as such if
+	// scripting is enabled for the node (which is not something we track).
+	if n.Namespace != "" {
+		return false
+	}
+	switch n.Data {
+	case "iframe", "noembed", "noframes", "noscript", "plaintext", "script", "style", "xmp":
+		return true
+	default:
+		return false
+	}
+}
+
+// writeQuoted writes s to w surrounded by quotes. Normally it will use double
+// quotes, but if s contains a double quote, it will use single quotes.
+// It is used for writing the identifiers in a doctype declaration.
+// In valid HTML, they can't contain both types of quotes.
+func writeQuoted(w writer, s string) error {
+	var q byte = '"'
+	if strings.Contains(s, `"`) {
+		q = '\''
+	}
+	if err := w.WriteByte(q); err != nil {
+		return err
+	}
+	if _, err := w.WriteString(s); err != nil {
+		return err
+	}
+	if err := w.WriteByte(q); err != nil {
+		return err
+	}
+	return nil
+}
+
+// Section 12.1.2, "Elements", gives this list of void elements. Void elements
+// are those that can't have any contents.
+var voidElements = map[string]bool{
+	"area":   true,
+	"base":   true,
+	"br":     true,
+	"col":    true,
+	"embed":  true,
+	"hr":     true,
+	"img":    true,
+	"input":  true,
+	"keygen": true, // "keygen" has been removed from the spec, but are kept here for backwards compatibility.
+	"link":   true,
+	"meta":   true,
+	"param":  true,
+	"source": true,
+	"track":  true,
+	"wbr":    true,
+}

vendor/golang.org/x/net/http2/databuffer.go

@@ -20,41 +20,44 @@ import (
 // TODO: Benchmark to determine if the pools are necessary. The GC may have
 // improved enough that we can instead allocate chunks like this:
 // make([]byte, max(16<<10, expectedBytesRemaining))
-var (
-	dataChunkSizeClasses = []int{
-		1 << 10,
-		2 << 10,
-		4 << 10,
-		8 << 10,
-		16 << 10,
-	}
-	dataChunkPools = [...]sync.Pool{
-		{New: func() interface{} { return make([]byte, 1<<10) }},
-		{New: func() interface{} { return make([]byte, 2<<10) }},
-		{New: func() interface{} { return make([]byte, 4<<10) }},
-		{New: func() interface{} { return make([]byte, 8<<10) }},
-		{New: func() interface{} { return make([]byte, 16<<10) }},
-	}
-)
+var dataChunkPools = [...]sync.Pool{
+	{New: func() interface{} { return new([1 << 10]byte) }},
+	{New: func() interface{} { return new([2 << 10]byte) }},
+	{New: func() interface{} { return new([4 << 10]byte) }},
+	{New: func() interface{} { return new([8 << 10]byte) }},
+	{New: func() interface{} { return new([16 << 10]byte) }},
+}
 
 func getDataBufferChunk(size int64) []byte {
-	i := 0
-	for ; i < len(dataChunkSizeClasses)-1; i++ {
-		if size <= int64(dataChunkSizeClasses[i]) {
-			break
-		}
+	switch {
+	case size <= 1<<10:
+		return dataChunkPools[0].Get().(*[1 << 10]byte)[:]
+	case size <= 2<<10:
+		return dataChunkPools[1].Get().(*[2 << 10]byte)[:]
+	case size <= 4<<10:
+		return dataChunkPools[2].Get().(*[4 << 10]byte)[:]
+	case size <= 8<<10:
+		return dataChunkPools[3].Get().(*[8 << 10]byte)[:]
+	default:
+		return dataChunkPools[4].Get().(*[16 << 10]byte)[:]
 	}
-	return dataChunkPools[i].Get().([]byte)
 }
 
 func putDataBufferChunk(p []byte) {
-	for i, n := range dataChunkSizeClasses {
-		if len(p) == n {
-			dataChunkPools[i].Put(p)
-			return
-		}
+	switch len(p) {
+	case 1 << 10:
+		dataChunkPools[0].Put((*[1 << 10]byte)(p))
+	case 2 << 10:
+		dataChunkPools[1].Put((*[2 << 10]byte)(p))
+	case 4 << 10:
+		dataChunkPools[2].Put((*[4 << 10]byte)(p))
+	case 8 << 10:
+		dataChunkPools[3].Put((*[8 << 10]byte)(p))
+	case 16 << 10:
+		dataChunkPools[4].Put((*[16 << 10]byte)(p))
+	default:
+		panic(fmt.Sprintf("unexpected buffer len=%v", len(p)))
 	}
-	panic(fmt.Sprintf("unexpected buffer len=%v", len(p)))
 }
 
 // dataBuffer is an io.ReadWriter backed by a list of data chunks.

vendor/golang.org/x/net/http2/go111.go

@@ -1,30 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build go1.11
-// +build go1.11
-
-package http2
-
-import (
-	"net/http/httptrace"
-	"net/textproto"
-)
-
-func traceHasWroteHeaderField(trace *httptrace.ClientTrace) bool {
-	return trace != nil && trace.WroteHeaderField != nil
-}
-
-func traceWroteHeaderField(trace *httptrace.ClientTrace, k, v string) {
-	if trace != nil && trace.WroteHeaderField != nil {
-		trace.WroteHeaderField(k, []string{v})
-	}
-}
-
-func traceGot1xxResponseFunc(trace *httptrace.ClientTrace) func(int, textproto.MIMEHeader) error {
-	if trace != nil {
-		return trace.Got1xxResponse
-	}
-	return nil
-}