all: update vendored golang.org/x/net

Pull in CL 576895:

	ec05fdcd http2: don't retry the first request on a connection on GOAWAY error

For #66668.
Fixes #60636.

Change-Id: I9903607e3d432a5db0325da82eb7f4b378fbddde
Reviewed-on: https://go-review.googlesource.com/c/go/+/576976
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

1 files changed, 14 insertions, 1 deletions

diff --git a/src/net/http/h2_bundle.go b/src/net/http/h2_bundle.go
index 683d538dbc..5f97a27ac2 100644
--- a/src/net/http/h2_bundle.go
+++ b/src/net/http/h2_bundle.go
@@ -8338,7 +8338,20 @@ func (cc *http2ClientConn) setGoAway(f *http2GoAwayFrame) {
 	}
 	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 != http2ErrCodeNo {
+			// 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(http2errClientConnGotGoAway)
 		}
 	}