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go/doc/go1.3.txt
Adam Langley fca335e91a crypto/tls: enforce that either ServerName or InsecureSkipVerify be given.
crypto/tls has two functions for creating a client connection: Dial,
which most users are expected to use, and Client, which is the
lower-level API.

Dial does what you expect: it gives you a secure connection to the host
that you specify and the majority of users of crypto/tls appear to work
fine with it.

Client gives more control but needs more care. Specifically, if it
wasn't given a server name in the tls.Config then it didn't check that
the server's certificates match any hostname - because it doesn't have
one to check against. It was assumed that users of the low-level API
call VerifyHostname on the certificate themselves if they didn't supply
a hostname.

A review of the uses of Client both within Google and in a couple of
external libraries has shown that nearly all of them got this wrong.

Thus, this change enforces that either a ServerName or
InsecureSkipVerify is given. This does not affect tls.Dial.

See discussion at https://groups.google.com/d/msg/golang-nuts/4vnt7NdLvVU/b1SJ4u0ikb0J.

Fixes #7342.

LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews
https://golang.org/cl/67010043
2014-02-21 15:56:41 -05:00

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cmd/gofmt: remove -tabwidth and -tabs flags (CL 52170043)
liblink: pull linker i/o into separate liblink C library (CL 35790044)
misc/dist: renamed misc/makerelease (CL 39920043)
runtime: output how long goroutines are blocked (CL 50420043)
syscall: add NewCallbackCDecl to use for windows callbacks (CL 36180044)
testing: diagnose buggy tests that panic(nil) (CL 55780043)
testing: add b.RunParallel function (CL 57270043)
misc/benchcmp has been replaced by go tool benchcmp (CL 47980043)
cmd/go, go/build: support .m files (CL 60590044)
unicode: upgrade from Unicode 6.2.0 to 6.3.0 (CL 65400044)
runtime/debug: add SetPanicOnFault (CL 66590044)
crypto/tls: ServerName or InsecureSkipVerify (CL 67010043)