tree da62e4a63532fdfc7812bdc08db48a5eb2b3324b
parent 7c62cfdcccc65f87b0120ec841012ba816fc1aec
author Brad Fitzpatrick <bradfitz@golang.org> 1470377571 +0000
committer Brad Fitzpatrick <bradfitz@golang.org> 1470415144 +0000

http2: adjust flow control on open streams when processing SETTINGS

The http2 spec says:

> When the value of SETTINGS_INITIAL_WINDOW_SIZE changes, a receiver
> MUST adjust the size of all stream flow-control windows that it
> maintains by the difference between the new value and the old value.

We didn't do this before, and it never mattered until
https://golang.org/cl/25362 for golang/go#16519 because we always knew
the peer's initial window size.

Once we started writing request bodies before hearing the peer's
setting (and thus assuming 64KB), it became very important that this
TODO was done. Should've done it earlier.

More details in the bug.

Updates golang/go#16612 (fixes after bundle into std)

Change-Id: I0ac0280bdd5f6e933ad82f8c9df3c4528295bac2
Reviewed-on: https://go-review.googlesource.com/25508
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Chris Broadfoot <cbro@golang.org>