frp/pkg/util/net/dns.go

34 lines
1010 B
Go

// Copyright 2023 The frp Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package net
import (
"context"
"net"
)
func SetDefaultDNSAddress(dnsAddress string) {
if _, _, err := net.SplitHostPort(dnsAddress); err != nil {
dnsAddress = net.JoinHostPort(dnsAddress, "53")
}
// Change default dns server
net.DefaultResolver = &net.Resolver{
PreferGo: true,
Dial: func(ctx context.Context, network, address string) (net.Conn, error) {
return net.Dial("udp", dnsAddress)
},
}
}