internal/http3: add Transport and ClientConn

Add the first rudiments of an HTTP/3 client.

The client currently opens a QUIC connection and creates a control
stream on it, and nothing else.

Add surrounding test infrastructure for examining the client's
behavior. Tests use the experimental testing/synctest package
and will only run when the Go version is at least Go 1.24 and
GOEXPERIMENT=synctest is set.

For golang/go#70914

Change-Id: I19803187a8e62c461f60d7a1d44c2a408377e342
Reviewed-on: https://go-review.googlesource.com/c/net/+/642516
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Auto-Submit: Damien Neil <dneil@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
6 files changed
tree: b90e4f1634e0eeb852f56349c7cbe5f603693099
  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 packages.

Report Issues / Send Patches

This repository uses Gerrit for code changes. To learn how to submit changes to this repository, see https://go.dev/doc/contribute.

The git repository is https://go.googlesource.com/net.

The main issue tracker for the net repository is located at https://go.dev/issues. Prefix your issue with “x/net:” in the subject line, so it is easy to find.