tree e65f759515c4f801e470f3ec2a306fc5cc73a1d5
parent 057a25b06247e0c51ba15d8ae475feb2fcb72164
author Ian Gudger <igudger@google.com> 1492654067 -0700
committer Brad Fitzpatrick <bradfitz@golang.org> 1498222643 +0000

dns/dnsmessage: allocation free DNS message parsing and building

Parsing and building can now be done 100% allocation free for most
types. Non-name variable-length fields such as TXT records still
require allocations. Building with compression still causes allocations
due to the use of a map. Both parsing and building will perform
allocations in error paths.

Updates golang/go#16218

Change-Id: I644a7776bd0bf4ad20def521cee44eeadc5e9c06
Reviewed-on: https://go-review.googlesource.com/41145
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>