Closed ghost closed 3 years ago
????
package main
import (
"context"
"io/ioutil"
"log"
"net"
"net/http"
"time"
)
func main() {
var (
dnsResolverIP = "8.8.8.8:53" // Google DNS resolver.
dnsResolverProto = "udp" // Protocol to use for the DNS resolver
dnsResolverTimeoutMs = 5000 // Timeout (ms) for the DNS resolver (optional)
)
dialer := &net.Dialer{
Resolver: &net.Resolver{
PreferGo: true,
Dial: func(ctx context.Context, network, address string) (net.Conn, error) {
d := net.Dialer{
Timeout: time.Duration(dnsResolverTimeoutMs) * time.Millisecond,
}
return d.DialContext(ctx, dnsResolverProto, dnsResolverIP)
},
},
}
dialContext := func(ctx context.Context, network, addr string) (net.Conn, error) {
return dialer.DialContext(ctx, network, addr)
}
http.DefaultTransport.(*http.Transport).DialContext = dialContext
httpClient := &http.Client{}
// Testing the new HTTP client with the custom DNS resolver.
resp, err := httpClient.Get("https://www.violetnorth.com")
if err != nil {
log.Fatalln(err)
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Fatalln(err)
}
log.Println(string(body))
}
package main
import (
"context"
"net"
"time"
)
func main() {
r := &net.Resolver{
PreferGo: true,
Dial: func(ctx context.Context, network, address string) (net.Conn, error) {
d := net.Dialer{
Timeout: time.Millisecond * time.Duration(10000),
}
return d.DialContext(ctx, network, "1.1.1.1:53")
},
}
ip, _ := r.LookupHost(context.Background(), "www.google.com")
print(ip[0])
}
Use google dns on this app and stop asking the user to change system dns.