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net: delay IP protocol stack-snooping system calls

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This change delays IP protocol stack-snooping system calls until the
start of connection setup for the better experience with some system
call auditing, such as seccomp on Linux. See #16789 for examples.

Also updates the documentation on favoriteAddrFamily, which is the
owner of stack-snooping system calls.

Fixes #16789.

Change-Id: I4af27bc1ed06ffb1f657b6f6381c328c1f41c66c
Reviewed-on: https://go-review.googlesource.com/40750
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Mikio Hara 2017-04-14 17:43:42 +09:00
parent bc29313722
commit 6694a6888b
20 changed files with 157 additions and 181 deletions
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2
src/net/error_test.go
View file

@ -214,7 +214,7 @@ func TestDialAddrError(t *testing.T) {
case "nacl", "plan9":
t.Skipf("not supported on %s", runtime.GOOS)
}
if !supportsIPv4 || !supportsIPv6 {
if !supportsIPv4() || !supportsIPv6() {
t.Skip("both IPv4 and IPv6 are required")
}