update kube and dependencies to v1.23

Signed-off-by: Humble Chirammal <hchiramm@redhat.com>

vendor/golang.org/x/net/http2/README

@@ -1,20 +0,0 @@
-This is a work-in-progress HTTP/2 implementation for Go.
-
-It will eventually live in the Go standard library and won't require
-any changes to your code to use.  It will just be automatic.
-
-Status:
-
-* The server support is pretty good. A few things are missing
-  but are being worked on.
-* The client work has just started but shares a lot of code
-  is coming along much quicker.
-
-Docs are at https://godoc.org/golang.org/x/net/http2
-
-Demo test server at https://http2.golang.org/
-
-Help & bug reports welcome!
-
-Contributing: https://golang.org/doc/contribute.html
-Bugs:         https://golang.org/issue/new?title=x/net/http2:+

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

@@ -6,6 +6,10 @@ package http2
 
 import "strings"
 
+// The HTTP protocols are defined in terms of ASCII, not Unicode. This file
+// contains helper functions which may use Unicode-aware functions which would
+// otherwise be unsafe and could introduce vulnerabilities if used improperly.
+
 // asciiEqualFold is strings.EqualFold, ASCII only. It reports whether s and t
 // are equal, ASCII-case-insensitively.
 func asciiEqualFold(s, t string) bool {

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

@@ -259,16 +259,12 @@ func ConfigureServer(s *http.Server, conf *Server) error {
 
 	s.TLSConfig.PreferServerCipherSuites = true
 
-	haveNPN := false
-	for _, p := range s.TLSConfig.NextProtos {
-		if p == NextProtoTLS {
-			haveNPN = true
-			break
-		}
-	}
-	if !haveNPN {
+	if !strSliceContains(s.TLSConfig.NextProtos, NextProtoTLS) {
 		s.TLSConfig.NextProtos = append(s.TLSConfig.NextProtos, NextProtoTLS)
 	}
+	if !strSliceContains(s.TLSConfig.NextProtos, "http/1.1") {
+		s.TLSConfig.NextProtos = append(s.TLSConfig.NextProtos, "http/1.1")
+	}
 
 	if s.TLSNextProto == nil {
 		s.TLSNextProto = map[string]func(*http.Server, *tls.Conn, http.Handler){}
@@ -820,7 +816,7 @@ func (sc *serverConn) serve() {
 	})
 	sc.unackedSettings++
 
-	// Each connection starts with intialWindowSize inflow tokens.
+	// Each connection starts with initialWindowSize inflow tokens.
 	// If a higher value is configured, we add more tokens.
 	if diff := sc.srv.initialConnRecvWindowSize() - initialWindowSize; diff > 0 {
 		sc.sendWindowUpdate(nil, int(diff))
@@ -860,6 +856,15 @@ func (sc *serverConn) serve() {
 		case res := <-sc.wroteFrameCh:
 			sc.wroteFrame(res)
 		case res := <-sc.readFrameCh:
+			// Process any written frames before reading new frames from the client since a
+			// written frame could have triggered a new stream to be started.
+			if sc.writingFrameAsync {
+				select {
+				case wroteRes := <-sc.wroteFrameCh:
+					sc.wroteFrame(wroteRes)
+				default:
+				}
+			}
 			if !sc.processFrameFromReader(res) {
 				return
 			}

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

@@ -264,9 +264,8 @@ type ClientConn struct {
 	peerMaxHeaderListSize uint64
 	initialWindowSize     uint32
 
-	hbuf    bytes.Buffer // HPACK encoder writes into this
-	henc    *hpack.Encoder
-	freeBuf [][]byte
+	hbuf bytes.Buffer // HPACK encoder writes into this
+	henc *hpack.Encoder
 
 	wmu  sync.Mutex // held while writing; acquire AFTER mu if holding both
 	werr error      // first write error that has occurred
@@ -386,8 +385,13 @@ func (cs *clientStream) abortRequestBodyWrite(err error) {
 	}
 	cc := cs.cc
 	cc.mu.Lock()
-	cs.stopReqBody = err
-	cc.cond.Broadcast()
+	if cs.stopReqBody == nil {
+		cs.stopReqBody = err
+		if cs.req.Body != nil {
+			cs.req.Body.Close()
+		}
+		cc.cond.Broadcast()
+	}
 	cc.mu.Unlock()
 }
 
@@ -913,46 +917,6 @@ func (cc *ClientConn) closeForLostPing() error {
 	return cc.closeForError(err)
 }
 
-const maxAllocFrameSize = 512 << 10
-
-// frameBuffer returns a scratch buffer suitable for writing DATA frames.
-// They're capped at the min of the peer's max frame size or 512KB
-// (kinda arbitrarily), but definitely capped so we don't allocate 4GB
-// bufers.
-func (cc *ClientConn) frameScratchBuffer() []byte {
-	cc.mu.Lock()
-	size := cc.maxFrameSize
-	if size > maxAllocFrameSize {
-		size = maxAllocFrameSize
-	}
-	for i, buf := range cc.freeBuf {
-		if len(buf) >= int(size) {
-			cc.freeBuf[i] = nil
-			cc.mu.Unlock()
-			return buf[:size]
-		}
-	}
-	cc.mu.Unlock()
-	return make([]byte, size)
-}
-
-func (cc *ClientConn) putFrameScratchBuffer(buf []byte) {
-	cc.mu.Lock()
-	defer cc.mu.Unlock()
-	const maxBufs = 4 // arbitrary; 4 concurrent requests per conn? investigate.
-	if len(cc.freeBuf) < maxBufs {
-		cc.freeBuf = append(cc.freeBuf, buf)
-		return
-	}
-	for i, old := range cc.freeBuf {
-		if old == nil {
-			cc.freeBuf[i] = buf
-			return
-		}
-	}
-	// forget about it.
-}
-
 // errRequestCanceled is a copy of net/http's errRequestCanceled because it's not
 // exported. At least they'll be DeepEqual for h1-vs-h2 comparisons tests.
 var errRequestCanceled = errors.New("net/http: request canceled")
@@ -1151,40 +1115,28 @@ func (cc *ClientConn) roundTrip(req *http.Request) (res *http.Response, gotErrAf
 		return res, false, nil
 	}
 
+	handleError := func(err error) (*http.Response, bool, error) {
+		if !hasBody || bodyWritten {
+			cc.writeStreamReset(cs.ID, ErrCodeCancel, nil)
+		} else {
+			bodyWriter.cancel()
+			cs.abortRequestBodyWrite(errStopReqBodyWriteAndCancel)
+			<-bodyWriter.resc
+		}
+		cc.forgetStreamID(cs.ID)
+		return nil, cs.getStartedWrite(), err
+	}
+
 	for {
 		select {
 		case re := <-readLoopResCh:
 			return handleReadLoopResponse(re)
 		case <-respHeaderTimer:
-			if !hasBody || bodyWritten {
-				cc.writeStreamReset(cs.ID, ErrCodeCancel, nil)
-			} else {
-				bodyWriter.cancel()
-				cs.abortRequestBodyWrite(errStopReqBodyWriteAndCancel)
-				<-bodyWriter.resc
-			}
-			cc.forgetStreamID(cs.ID)
-			return nil, cs.getStartedWrite(), errTimeout
+			return handleError(errTimeout)
 		case <-ctx.Done():
-			if !hasBody || bodyWritten {
-				cc.writeStreamReset(cs.ID, ErrCodeCancel, nil)
-			} else {
-				bodyWriter.cancel()
-				cs.abortRequestBodyWrite(errStopReqBodyWriteAndCancel)
-				<-bodyWriter.resc
-			}
-			cc.forgetStreamID(cs.ID)
-			return nil, cs.getStartedWrite(), ctx.Err()
+			return handleError(ctx.Err())
 		case <-req.Cancel:
-			if !hasBody || bodyWritten {
-				cc.writeStreamReset(cs.ID, ErrCodeCancel, nil)
-			} else {
-				bodyWriter.cancel()
-				cs.abortRequestBodyWrite(errStopReqBodyWriteAndCancel)
-				<-bodyWriter.resc
-			}
-			cc.forgetStreamID(cs.ID)
-			return nil, cs.getStartedWrite(), errRequestCanceled
+			return handleError(errRequestCanceled)
 		case <-cs.peerReset:
 			// processResetStream already removed the
 			// stream from the streams map; no need for
@@ -1295,11 +1247,35 @@ var (
 	errReqBodyTooLong = errors.New("http2: request body larger than specified content length")
 )
 
+// frameScratchBufferLen returns the length of a buffer to use for
+// outgoing request bodies to read/write to/from.
+//
+// It returns max(1, min(peer's advertised max frame size,
+// Request.ContentLength+1, 512KB)).
+func (cs *clientStream) frameScratchBufferLen(maxFrameSize int) int {
+	const max = 512 << 10
+	n := int64(maxFrameSize)
+	if n > max {
+		n = max
+	}
+	if cl := actualContentLength(cs.req); cl != -1 && cl+1 < n {
+		// Add an extra byte past the declared content-length to
+		// give the caller's Request.Body io.Reader a chance to
+		// give us more bytes than they declared, so we can catch it
+		// early.
+		n = cl + 1
+	}
+	if n < 1 {
+		return 1
+	}
+	return int(n) // doesn't truncate; max is 512K
+}
+
+var bufPool sync.Pool // of *[]byte
+
 func (cs *clientStream) writeRequestBody(body io.Reader, bodyCloser io.Closer) (err error) {
 	cc := cs.cc
 	sentEnd := false // whether we sent the final DATA frame w/ END_STREAM
-	buf := cc.frameScratchBuffer()
-	defer cc.putFrameScratchBuffer(buf)
 
 	defer func() {
 		traceWroteRequest(cs.trace, err)
@@ -1307,7 +1283,13 @@ func (cs *clientStream) writeRequestBody(body io.Reader, bodyCloser io.Closer) (
 		// Request.Body is closed by the Transport,
 		// and in multiple cases: server replies <=299 and >299
 		// while still writing request body
-		cerr := bodyCloser.Close()
+		var cerr error
+		cc.mu.Lock()
+		if cs.stopReqBody == nil {
+			cs.stopReqBody = errStopReqBodyWrite
+			cerr = bodyCloser.Close()
+		}
+		cc.mu.Unlock()
 		if err == nil {
 			err = cerr
 		}
@@ -1318,9 +1300,24 @@ func (cs *clientStream) writeRequestBody(body io.Reader, bodyCloser io.Closer) (
 	remainLen := actualContentLength(req)
 	hasContentLen := remainLen != -1
 
+	cc.mu.Lock()
+	maxFrameSize := int(cc.maxFrameSize)
+	cc.mu.Unlock()
+
+	// Scratch buffer for reading into & writing from.
+	scratchLen := cs.frameScratchBufferLen(maxFrameSize)
+	var buf []byte
+	if bp, ok := bufPool.Get().(*[]byte); ok && len(*bp) >= scratchLen {
+		defer bufPool.Put(bp)
+		buf = *bp
+	} else {
+		buf = make([]byte, scratchLen)
+		defer bufPool.Put(&buf)
+	}
+
 	var sawEOF bool
 	for !sawEOF {
-		n, err := body.Read(buf[:len(buf)-1])
+		n, err := body.Read(buf[:len(buf)])
 		if hasContentLen {
 			remainLen -= int64(n)
 			if remainLen == 0 && err == nil {
@@ -1331,8 +1328,9 @@ func (cs *clientStream) writeRequestBody(body io.Reader, bodyCloser io.Closer) (
 				// to send the END_STREAM bit early, double-check that we're actually
 				// at EOF. Subsequent reads should return (0, EOF) at this point.
 				// If either value is different, we return an error in one of two ways below.
+				var scratch [1]byte
 				var n1 int
-				n1, err = body.Read(buf[n:])
+				n1, err = body.Read(scratch[:])
 				remainLen -= int64(n1)
 			}
 			if remainLen < 0 {
@@ -1402,10 +1400,6 @@ func (cs *clientStream) writeRequestBody(body io.Reader, bodyCloser io.Closer) (
 		}
 	}
 
-	cc.mu.Lock()
-	maxFrameSize := int(cc.maxFrameSize)
-	cc.mu.Unlock()
-
 	cc.wmu.Lock()
 	defer cc.wmu.Unlock()