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net/http/httputil: return after handling error

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Fixes #70237

Change-Id: Ieb22b6e7284cb4a40d4987b0e4b9cfb6e5158161
Reviewed-on: https://go-review.googlesource.com/c/go/+/627635
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
This commit is contained in:
Sean Liao 2024-11-13 18:54:54 +00:00 committed by Gopher Robot
parent 5a529e06c1
commit e64f7ef03f
1 changed files with 1 additions and 0 deletions
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1
src/net/http/httputil/reverseproxy.go
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@ -739,6 +739,7 @@ func (p *ReverseProxy) handleUpgradeResponse(rw http.ResponseWriter, req *http.R
resUpType := upgradeType(res.Header)
if !ascii.IsPrint(resUpType) { // We know reqUpType is ASCII, it's checked by the caller.
p.getErrorHandler()(rw, req, fmt.Errorf("backend tried to switch to invalid protocol %q", resUpType))
return
}
if !ascii.EqualFold(reqUpType, resUpType) {
p.getErrorHandler()(rw, req, fmt.Errorf("backend tried to switch protocol %q when %q was requested", resUpType, reqUpType))