|author||Brad Fitzpatrick <email@example.com>||Fri Sep 03 08:39:07 2021 -0700|
|committer||Brad Fitzpatrick <firstname.lastname@example.org>||Fri Sep 03 16:21:42 2021 +0000|
http2: make Transport not reuse conns after a stream protocol error If a server sends a stream error of type "protocol error" to a client, that's the server saying "you're speaking http2 wrong". At that point, regardless of whether we're in the right or not (that is, regardless of whether the Transport is bug-free), clearly there's some confusion and one of the two parties is either wrong or confused. There's no point pushing on and trying to use the connection and potentially exacerbating the confusion (as we saw in golang/go#47635). Instead, make the client "poison" the connection by setting a new "do not reuse" bit on it. Existing streams can finish up but new requests won't pick that connection. Also, make those requests as retryable without the caller getting an error. Given that golang/go#42777 existed, there are HTTP/2 servers in the wild that incorrectly set RST_STREAM PROTOCOL_ERROR codes. But even once those go away, this is still a reasonable fix for preventing a broken connection from being stuck in the connection pool that fails all future requests if a similar bug happens in another HTTP/2 server. Updates golang/go#47635 Change-Id: I3f89ecd1d3710e49f7219ccb846e016eb269515b Reviewed-on: https://go-review.googlesource.com/c/net/+/347033 Trust: Brad Fitzpatrick <email@example.com> Run-TryBot: Brad Fitzpatrick <firstname.lastname@example.org> TryBot-Result: Go Bot <email@example.com> Reviewed-by: Damien Neil <firstname.lastname@example.org>
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