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

When a server sends a GOAWAY frame, it indicates the ID of the
last stream it processed. We use this to mark any requests after
that stream as being safe to retry on a new connection.

Change this to not retry the first request on a connection if we
get a GOAWAY with an error, even if the GOAWAY has a stream ID
of 0 indicating that it didn't process that request.
If we're getting an error as the first result on a new connection,
then there's either something wrong with the server or something
wrong with our request; either way, retrying isn't likely to be
productive and may be unsafe.

This matches the behavior of the HTTP/1 client, which
also avoids retrying the first request on a new connection.

For golang/go#66668
Fixes golang/go#60636

Change-Id: I90ea7cfce2974dd413f7cd8b78541678850376a5
Reviewed-on: https://go-review.googlesource.com/c/net/+/576895
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
2 files changed
tree: da04046b3a4960a606524c37bf326c4410ba8efd
  1. bpf/
  2. context/
  3. dict/
  4. dns/
  5. html/
  6. http/
  7. http2/
  8. icmp/
  9. idna/
  10. internal/
  11. ipv4/
  12. ipv6/
  13. lif/
  14. nettest/
  15. netutil/
  16. proxy/
  17. publicsuffix/
  18. quic/
  19. route/
  20. trace/
  21. webdav/
  22. websocket/
  23. xsrftoken/
  24. .gitattributes
  25. .gitignore
  26. codereview.cfg
  27. CONTRIBUTING.md
  28. go.mod
  29. go.sum
  30. LICENSE
  31. PATENTS
  32. README.md
README.md

Go Networking

Go Reference

This repository holds supplementary Go networking libraries.

Download/Install

The easiest way to install is to run go get -u golang.org/x/net. You can also manually git clone the repository to $GOPATH/src/golang.org/x/net.

Report Issues / Send Patches

This repository uses Gerrit for code changes. To learn how to submit changes to this repository, see https://golang.org/doc/contribute.html. The main issue tracker for the net repository is located at https://github.com/golang/go/issues. Prefix your issue with “x/net:” in the subject line, so it is easy to find.