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// 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
}
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