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The Go programming language
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Mateusz Poliwczak 3dc85a32fc net: report completed when context is done in cgoLookupIP and cgoLookupPTR 
All the Lookup* methods that resolve hostnames eventually call lookupIP
or lookupHost method. When the order is selected to be hostLookupCGO
then lookupHost calls cgoLookupHost which internally calls cgoLookupIP
(the lookupIP directly calls cgoLookupIP).
When we provide a context that is cancelled after cgo call, then the
cgoLookupIP returns completed  == false, which caues the
lookupIP/lookupHost to fallback to the go resolver.
This fallback is unnecessary because our context is already cancelled.

The same thing can happen to LookupAddr.

Change-Id: Ifff7716c461f05d954ef43b5205865103558b410
GitHub-Last-Rev: 2ef2023e8c
GitHub-Pull-Request: golang/go#57042
Reviewed-on: https://go-review.googlesource.com/c/go/+/454696
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-01-27 00:42:08 +00:00
.github .github: suggest using private browsing in pkgsite template 2023-01-03 18:52:47 +00:00
api bytes, strings: add ContainsFunc 2023-01-24 22:06:45 +00:00
doc runtime: replace panic(nil) with panic(new(runtime.PanicNilError)) 2023-01-19 22:21:50 +00:00
lib/time time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
misc misc: update go.mod to 1.21 2023-01-26 16:55:59 +00:00
src net: report completed when context is done in cgoLookupIP and cgoLookupPTR 2023-01-27 00:42:08 +00:00
test cmd/compile/internal/noder: stop creating TUNION types 2023-01-26 21:43:08 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
go.env cmd/go: introduce GOROOT/go.env and move proxy/sumdb config there 2023-01-17 23:10:39 +00:00
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README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 4.0 Attributions license.

Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

Download and Install

Binary Distributions

Official binary distributions are available at https://go.dev/dl/.

After downloading a binary release, visit https://go.dev/doc/install for installation instructions.

Install From Source

If a binary distribution is not available for your combination of operating system and architecture, visit https://go.dev/doc/install/source for source installation instructions.

Contributing

Go is the work of thousands of contributors. We appreciate your help!

To contribute, please read the contribution guidelines at https://go.dev/doc/contribute.

Note that the Go project uses the issue tracker for bug reports and proposals only. See https://go.dev/wiki/Questions for a list of places to ask questions about the Go language.