Aperence 3d4daa38a7 net: enable multipath TCP by default for listeners ... A previous change [1] was introduced to enable MPTCP by default for both the clients and servers, based on the discussions [2] in golang#56539, where MPTCP would be an opt-in for a release or two, and then would become an opt-out. This change was not accepted at the time because the support for a few socket options was missing [3]. Now that this support has been added [4] and backported to stable versions not to block MPTCP deployment with Go, it sounds like a good time to reconsider the use of MPTCP by default. Instead of enabling MPTCP on both ends by default, as a first step, it seems safer to change the default behaviour only for the server side (Listeners). On the server side, the impact is minimal: when clients don't request to use MPTCP, server applications will create "plain" TCP sockets within the kernel when connections are accepted, making the performance impact minimal. This should also ease experiments where MPTCP is enabled by default on the client side (Dialer). The changes in this patch consist of a duplication of the mptcpStatus enumeration to have both a mptcpStatusDial and a mptcpStatusListen, where MPTCP is enabled by default in mptcpStatusListen, but disabled by default in mptcpStatusDial. It is still possible to turn MPTCP support on and off by using GODEBUG=multipathtcp=1. [1] https://go-review.googlesource.com/c/go/+/563575 [2] https://go.dev/issue/56539#issuecomment-1309294637 [3] https://github.com/multipath-tcp/mptcp_net-next/issues/383 [4] bd11dc4fb9 [5] https://www.mptcp.dev/faq.html#why--when-should-mptcp-be-enabled-by-default Updates #56539 Change-Id: I1ca0d6aaf74d3bda5468af135e29cdb405d3fd00 GitHub-Last-Rev: 5f9f29bfc1 GitHub-Pull-Request: golang/go#69016 Reviewed-on: https://go-review.googlesource.com/c/go/+/607715 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Matthieu Baerts <matttbe@kernel.org> Auto-Submit: Ian Lance Taylor <iant@google.com>		2024-09-03 15:27:29 +00:00
..
http	net/http: add HTTP2Config	2024-08-29 17:38:46 +00:00
url	net/url: implement encoding.BinaryAppender for URL	2024-08-08 19:43:18 +00:00
56539.md	net: enable multipath TCP by default for listeners	2024-09-03 15:27:29 +00:00