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Adam Langley 2a8c81ffaa crypto/tls: buffer handshake messages.
This change causes TLS handshake messages to be buffered and written in
a single Write to the underlying net.Conn.

There are two reasons to want to do this:

Firstly, it's slightly preferable to do this in order to save sending
several, small packets over the network where a single one will do.

Secondly, since 37c28759ca errors from
Write have been returned from a handshake. This means that, if a peer
closes the connection during a handshake, a “broken pipe” error may
result from tls.Conn.Handshake(). This can mask any, more detailed,
fatal alerts that the peer may have sent because a read will never
happen.

Buffering handshake messages means that the peer will not receive, and
possibly reject, any of a flow while it's still being written.

Fixes #15709

Change-Id: I38dcff1abecc06e52b2de647ea98713ce0fb9a21
Reviewed-on: https://go-review.googlesource.com/23609
Reviewed-by: Andrew Gerrand <adg@golang.org>
Run-TryBot: Andrew Gerrand <adg@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-01 23:26:04 +00:00
.github doc: update issue template 2016-03-09 00:52:16 +00:00
api io: remove SizedReaderAt 2016-05-24 15:37:27 +00:00
doc doc: rename Unshare to Unshareflags in go1.7 release notes 2016-06-01 13:13:56 +00:00
lib/time all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
misc misc/cgo/test,cmd/dist: enable (most) Cgo tests on Android 2016-06-01 22:06:51 +00:00
src crypto/tls: buffer handshake messages. 2016-06-01 23:26:04 +00:00
test cmd/compile: correctly export underlying type of predecl. error type 2016-06-01 21:32:46 +00:00
.gitattributes .gitattributes: prevent all magic line ending changes 2014-12-12 23:14:54 +00:00
.gitignore cmd/go: fail with nice error message on bad GOOS/GOARCH pair 2016-05-06 01:18:07 +00:00
AUTHORS A+C: add Andre Nathan (individual CLA) 2016-05-24 13:54:49 +00:00
CONTRIBUTING.md doc: use new Gerrit URL and mention our instance in CONTRIBUTING.md 2016-03-09 00:52:42 +00:00
CONTRIBUTORS A+C: add Andre Nathan (individual CLA) 2016-05-24 13:54:49 +00:00
favicon.ico godoc: update favicon 2012-10-11 17:02:36 +11:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS
README.md readme: emphasize issue tracker is for bugs/proposals 2015-10-02 18:44:14 +00:00
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