1 // +build go1.6, !go1.8
5 * Copyright 2017 gRPC authors.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
27 "golang.org/x/net/context"
30 var errForInvalidTarget = fmt.Errorf("invalid target address [2001:db8:a0b:12f0::1, error info: missing ']' in address [2001:db8:a0b:12f0::1:443")
32 func replaceNetFunc() func() {
33 oldLookupHost := lookupHost
34 oldLookupSRV := lookupSRV
35 oldLookupTXT := lookupTXT
36 lookupHost = func(ctx context.Context, host string) ([]string, error) {
37 return hostLookup(host)
39 lookupSRV = func(ctx context.Context, service, proto, name string) (string, []*net.SRV, error) {
40 return srvLookup(service, proto, name)
42 lookupTXT = func(ctx context.Context, host string) ([]string, error) {
43 return txtLookup(host)
46 lookupHost = oldLookupHost
47 lookupSRV = oldLookupSRV
48 lookupTXT = oldLookupTXT