go/src/net/conf_netcgo.go

// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// +build netcgo

package net

/*

// Fail if cgo isn't available.

*/
import "C"

// The build tag "netcgo" forces use of the cgo DNS resolver.
// It is the opposite of "netgo".
func init() { netCgo = true }
all: make copyright headers consistent with one space after period This is a subset of https://golang.org/cl/20022 with only the copyright header lines, so the next CL will be smaller and more reviewable. Go policy has been single space after periods in comments for some time. The copyright header template at: https://golang.org/doc/contribute.html#copyright also uses a single space. Make them all consistent. Change-Id: Icc26c6b8495c3820da6b171ca96a74701b4a01b0 Reviewed-on: https://go-review.googlesource.com/20111 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> 2016-03-01 15:57:46 -07:00			`// Copyright 2015 The Go Authors. All rights reserved.`
net: add mechanisms to force go or cgo lookup, and to debug default strategy GODEBUG=netdns=1 prints a one-time strategy decision. (cgo or go DNS lookups) GODEBUG=netdns=2 prints the per-lookup strategy as a function of the hostname. The new "netcgo" build tag forces cgo DNS lookups. GODEBUG=netdns=go (or existing build tag "netgo") forces Go DNS resolution. GODEBUG=netdns=cgo (or new build tag "netcgo") forces libc DNS resolution. Options can be combined with e.g. GODEBUG=netdns=go+1 or GODEBUG=netdns=2+cgo. Fixes #11322 Fixes #11450 Change-Id: I7a67e9f759fd0a02320e7803f9ded1638b19e861 Reviewed-on: https://go-review.googlesource.com/11584 Reviewed-by: Russ Cox <rsc@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> 2015-06-25 04:52:54 -06:00			`// Use of this source code is governed by a BSD-style`
			`// license that can be found in the LICENSE file.`

			`// +build netcgo`

			`package net`

			`/*`

			`// Fail if cgo isn't available.`

			`*/`
			`import "C"`

			`// The build tag "netcgo" forces use of the cgo DNS resolver.`
			`// It is the opposite of "netgo".`
			`func init() { netCgo = true }`