39 lines
915 B
Go
39 lines
915 B
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 !js,!plan9,!windows
|
|
|
|
package net
|
|
|
|
// forceGoDNS forces the resolver configuration to use the pure Go resolver
|
|
// and returns a fixup function to restore the old settings.
|
|
func forceGoDNS() func() {
|
|
c := systemConf()
|
|
oldGo := c.netGo
|
|
oldCgo := c.netCgo
|
|
fixup := func() {
|
|
c.netGo = oldGo
|
|
c.netCgo = oldCgo
|
|
}
|
|
c.netGo = true
|
|
c.netCgo = false
|
|
return fixup
|
|
}
|
|
|
|
// forceCgoDNS forces the resolver configuration to use the cgo resolver
|
|
// and returns a fixup function to restore the old settings.
|
|
// (On non-Unix systems forceCgoDNS returns nil.)
|
|
func forceCgoDNS() func() {
|
|
c := systemConf()
|
|
oldGo := c.netGo
|
|
oldCgo := c.netCgo
|
|
fixup := func() {
|
|
c.netGo = oldGo
|
|
c.netCgo = oldCgo
|
|
}
|
|
c.netGo = false
|
|
c.netCgo = true
|
|
return fixup
|
|
}
|