From 0574d64ad35b51eb770d6cb59b46c9b3d8540999 Mon Sep 17 00:00:00 2001
From: Dmitri Shuralyov <dmitshur@golang.org>
Date: Fri, 12 Apr 2024 15:46:59 -0400
Subject: [PATCH] [release-branch.go1.21] net/http: update bundled
 golang.org/x/net/http2

Reference:https://go-review.googlesource.com/c/go/+/578357
Conflict:NA
Pull in CL 578336:

	ef58d90f http2: send correct LastStreamID in stream-caused GOAWAY

For #66668.
Fixes #66697.

Change-Id: I91fc8a67f21fadcb1801ff29d5e2b0453db89617
Reviewed-on: https://go-review.googlesource.com/c/go/+/578357
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
---
 src/net/http/h2_bundle.go | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/src/net/http/h2_bundle.go b/src/net/http/h2_bundle.go
index cd95f84269..5ad0c2819b 100644
--- a/src/net/http/h2_bundle.go
+++ b/src/net/http/h2_bundle.go
@@ -1891,6 +1891,9 @@ func http2terminalReadFrameError(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 *http2Framer) ReadFrame() (http2Frame, error) {
 	fr.errDetail = nil
 	if fr.lastFrame != nil {
@@ -2923,7 +2926,7 @@ func (fr *http2Framer) 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 *http2Framer) readMetaFrame(hf *http2HeadersFrame) (*http2MetaHeadersFrame, error) {
+func (fr *http2Framer) readMetaFrame(hf *http2HeadersFrame) (http2Frame, error) {
 	if fr.AllowIllegalReads {
 		return nil, errors.New("illegal use of AllowIllegalReads with ReadMetaHeaders")
 	}
@@ -2993,8 +2996,8 @@ func (fr *http2Framer) readMetaFrame(hf *http2HeadersFrame) (*http2MetaHeadersFr
 				log.Printf("http2: header list too large")
 			}
 			// It would be nice to send a RST_STREAM before sending the GOAWAY,
-			// but the struture of the server's frame writer makes this difficult.
-			return nil, http2ConnectionError(http2ErrCodeProtocol)
+			// but the structure of the server's frame writer makes this difficult.
+			return mh, http2ConnectionError(http2ErrCodeProtocol)
 		}
 
 		// Also close the connection after any CONTINUATION frame following an
@@ -3005,12 +3008,12 @@ func (fr *http2Framer) readMetaFrame(hf *http2HeadersFrame) (*http2MetaHeadersFr
 				log.Printf("http2: invalid header: %v", invalid)
 			}
 			// It would be nice to send a RST_STREAM before sending the GOAWAY,
-			// but the struture of the server's frame writer makes this difficult.
-			return nil, http2ConnectionError(http2ErrCodeProtocol)
+			// but the structure of the server's frame writer makes this difficult.
+			return mh, http2ConnectionError(http2ErrCodeProtocol)
 		}
 
 		if _, err := hdec.Write(frag); err != nil {
-			return nil, http2ConnectionError(http2ErrCodeCompression)
+			return mh, http2ConnectionError(http2ErrCodeCompression)
 		}
 
 		if hc.HeadersEnded() {
@@ -3027,7 +3030,7 @@ func (fr *http2Framer) readMetaFrame(hf *http2HeadersFrame) (*http2MetaHeadersFr
 	mh.http2HeadersFrame.invalidate()
 
 	if err := hdec.Close(); err != nil {
-		return nil, http2ConnectionError(http2ErrCodeCompression)
+		return mh, http2ConnectionError(http2ErrCodeCompression)
 	}
 	if invalid != nil {
 		fr.errDetail = invalid
@@ -5337,6 +5340,11 @@ func (sc *http2serverConn) processFrameFromReader(res http2readFrameResult) bool
 		sc.goAway(http2ErrCodeFlowControl)
 		return true
 	case http2ConnectionError:
+		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(http2ErrCode(ev))
 		return true // goAway will handle shutdown
-- 
2.33.0

