vendor: update buildkit to v0.15.0-rc1

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

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

@@ -104,7 +104,7 @@ 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.
+specification, dynamically modifying or extending the document'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.

vendor/golang.org/x/net/http/httpguts/httplex.go

@@ -12,7 +12,7 @@ import (
 	"golang.org/x/net/idna"
 )
 
-var isTokenTable = [127]bool{
+var isTokenTable = [256]bool{
 	'!':  true,
 	'#':  true,
 	'$':  true,
@@ -93,12 +93,7 @@ var isTokenTable = [127]bool{
 }
 
 func IsTokenRune(r rune) bool {
-	i := int(r)
-	return i < len(isTokenTable) && isTokenTable[i]
-}
-
-func isNotToken(r rune) bool {
-	return !IsTokenRune(r)
+	return r < utf8.RuneSelf && isTokenTable[byte(r)]
 }
 
 // HeaderValuesContainsToken reports whether any string in values
@@ -202,8 +197,8 @@ func ValidHeaderFieldName(v string) bool {
 	if len(v) == 0 {
 		return false
 	}
-	for _, r := range v {
-		if !IsTokenRune(r) {
+	for i := 0; i < len(v); i++ {
+		if !isTokenTable[v[i]] {
 			return false
 		}
 	}

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

@@ -490,6 +490,9 @@ func terminalReadFrameError(err error) bool {
 // returned error is ErrFrameTooLarge. Other errors may be of type
 // ConnectionError, StreamError, or anything else from the underlying
 // reader.
+//
+// If ReadFrame returns an error and a non-nil Frame, the Frame's StreamID
+// indicates the stream responsible for the error.
 func (fr *Framer) ReadFrame() (Frame, error) {
 	fr.errDetail = nil
 	if fr.lastFrame != nil {
@@ -1521,7 +1524,7 @@ func (fr *Framer) maxHeaderStringLen() int {
 // readMetaFrame returns 0 or more CONTINUATION frames from fr and
 // merge them into the provided hf and returns a MetaHeadersFrame
 // with the decoded hpack values.
-func (fr *Framer) readMetaFrame(hf *HeadersFrame) (*MetaHeadersFrame, error) {
+func (fr *Framer) readMetaFrame(hf *HeadersFrame) (Frame, error) {
 	if fr.AllowIllegalReads {
 		return nil, errors.New("illegal use of AllowIllegalReads with ReadMetaHeaders")
 	}
@@ -1592,7 +1595,7 @@ func (fr *Framer) readMetaFrame(hf *HeadersFrame) (*MetaHeadersFrame, error) {
 			}
 			// It would be nice to send a RST_STREAM before sending the GOAWAY,
 			// but the structure of the server's frame writer makes this difficult.
-			return nil, ConnectionError(ErrCodeProtocol)
+			return mh, ConnectionError(ErrCodeProtocol)
 		}
 
 		// Also close the connection after any CONTINUATION frame following an
@@ -1604,11 +1607,11 @@ func (fr *Framer) readMetaFrame(hf *HeadersFrame) (*MetaHeadersFrame, error) {
 			}
 			// It would be nice to send a RST_STREAM before sending the GOAWAY,
 			// but the structure of the server's frame writer makes this difficult.
-			return nil, ConnectionError(ErrCodeProtocol)
+			return mh, ConnectionError(ErrCodeProtocol)
 		}
 
 		if _, err := hdec.Write(frag); err != nil {
-			return nil, ConnectionError(ErrCodeCompression)
+			return mh, ConnectionError(ErrCodeCompression)
 		}
 
 		if hc.HeadersEnded() {
@@ -1625,7 +1628,7 @@ func (fr *Framer) readMetaFrame(hf *HeadersFrame) (*MetaHeadersFrame, error) {
 	mh.HeadersFrame.invalidate()
 
 	if err := hdec.Close(); err != nil {
-		return nil, ConnectionError(ErrCodeCompression)
+		return mh, ConnectionError(ErrCodeCompression)
 	}
 	if invalid != nil {
 		fr.errDetail = invalid

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

@@ -732,11 +732,7 @@ func isClosedConnError(err error) bool {
 		return false
 	}
 
-	// TODO: remove this string search and be more like the Windows
-	// case below. That might involve modifying the standard library
-	// to return better error types.
-	str := err.Error()
-	if strings.Contains(str, "use of closed network connection") {
+	if errors.Is(err, net.ErrClosed) {
 		return true
 	}
 
@@ -1482,6 +1478,11 @@ func (sc *serverConn) processFrameFromReader(res readFrameResult) bool {
 		sc.goAway(ErrCodeFlowControl)
 		return true
 	case ConnectionError:
+		if res.f != nil {
+			if id := res.f.Header().StreamID; id > sc.maxClientStreamID {
+				sc.maxClientStreamID = id
+			}
+		}
 		sc.logf("http2: server connection error from %v: %v", sc.conn.RemoteAddr(), ev)
 		sc.goAway(ErrCode(ev))
 		return true // goAway will handle shutdown

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

@@ -936,7 +936,20 @@ func (cc *ClientConn) setGoAway(f *GoAwayFrame) {
 	}
 	last := f.LastStreamID
 	for streamID, cs := range cc.streams {
-		if streamID > last {
+		if streamID <= last {
+			// The server's GOAWAY indicates that it received this stream.
+			// It will either finish processing it, or close the connection
+			// without doing so. Either way, leave the stream alone for now.
+			continue
+		}
+		if streamID == 1 && cc.goAway.ErrCode != ErrCodeNo {
+			// Don't retry the first stream on a connection if we get a non-NO error.
+			// If the server is sending an error on a new connection,
+			// retrying the request on a new one probably isn't going to work.
+			cs.abortStreamLocked(fmt.Errorf("http2: Transport received GOAWAY from server ErrCode:%v", cc.goAway.ErrCode))
+		} else {
+			// Aborting the stream with errClentConnGotGoAway indicates that
+			// the request should be retried on a new connection.
 			cs.abortStreamLocked(errClientConnGotGoAway)
 		}
 	}