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net: turn off dns compression for go resolver queries 

We don't need compression enabled here, because we only set one question in the dns message. So there is nothing to compress. Also it reduces 8 allocs per LookupHost.

Change-Id: I0968f837011daf6d7a7b22d9af4a8cc5b2878f4c
GitHub-Last-Rev: 7eb3362bca
GitHub-Pull-Request: golang/go#54576
Reviewed-on: https://go-review.googlesource.com/c/go/+/425043
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
This commit is contained in:
Mateusz Poliwczak 2022-08-21 20:33:42 +00:00 committed by Gopher Robot
parent ae303ff282
commit cd52818487
1 changed files with 0 additions and 1 deletions
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1
src/net/dnsclient_unix.go
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@ -54,7 +54,6 @@ var (
func newRequest(q dnsmessage.Question) (id uint16, udpReq, tcpReq []byte, err error) {
id = uint16(randInt())
b := dnsmessage.NewBuilder(make([]byte, 2, 514), dnsmessage.Header{ID: id, RecursionDesired: true})
b.EnableCompression()
if err := b.StartQuestions(); err != nil {
return 0, nil, nil, err
}