http2: send correct LastStreamID in stream-caused GOAWAY

When closing a connection because a stream contained a request we
didn't like (for example, because the request headers exceed
the maximum we will accept), set the LastStreamID in the GOAWAY
frame to include the offending stream. This informs the client
that retrying the request is unlikely to succeed, and avoids
retry loops.

This change requires passing the stream ID of the offending
stream from Framer.ReadFrame up to the caller. The most sensible
way to do this would probably be in the error. However,
ReadFrame currently returns a defined error type for
connection-ending errors (ConnectionError), and that type is a
uint32 with no place to put the stream ID. Rather than changing
the returned errors, ReadFrame now returns an error along with
a non-nil Frame containing the stream ID, when a stream is
responsible for a connection-ending error.

For golang/go#66668

Change-Id: Iba07ccbd70ab4939aa56903605474d01703ac6e4
Reviewed-on: https://go-review.googlesource.com/c/net/+/576756
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Auto-Submit: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
3 files changed
tree: 75c55a8d16d111589b9126b86f22075e628e4406
  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.