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// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
// SPDX-License-Identifier: MIT
// Package main implement end-to-end tests
package main
import (
"fmt"
"log"
"net"
"strings"
"time"
"github.com/pion/stun"
)
func test(network string) {
addr := resolve(network)
fmt.Println("START", strings.ToUpper(addr.Network())) //nolint
var (
nonce stun.Nonce
realm stun.Realm
)
const (
username = "user"
password = "secret"
)
conn, err := net.Dial(addr.Network(), addr.String())
if err != nil {
log.Fatalln("failed to dial conn:", err) //nolint
}
var options []stun.ClientOption
if network == "tcp" {
// Switching to "NO-RTO" mode.
fmt.Println("using WithNoRetransmit for TCP") //nolint
options = append(options, stun.WithNoRetransmit)
}
client, err := stun.NewClient(conn, options...)
if err != nil {
log.Fatal(err) //nolint
}
// First request should error.
request, err := stun.Build(stun.BindingRequest, stun.TransactionID, stun.Fingerprint)
if err != nil {
log.Fatalln("failed to build:", err) //nolint
}
if err = client.Do(request, func(event stun.Event) {
if event.Error != nil {
log.Fatalln("got event with error:", event.Error) //nolint
}
response := event.Message
if response.Type != stun.BindingError {
log.Fatalln("bad message", response) //nolint
}
var errCode stun.ErrorCodeAttribute
if codeErr := errCode.GetFrom(response); codeErr != nil {
log.Fatalln("failed to get error code:", codeErr) //nolint
}
if errCode.Code != stun.CodeUnauthorized {
log.Fatalln("unexpected error code:", errCode) //nolint
}
if parseErr := response.Parse(&nonce, &realm); parseErr != nil {
log.Fatalln("failed to parse:", parseErr) //nolint
}
fmt.Println("Got nonce", nonce, "and realm", realm) //nolint
}); err != nil {
log.Fatalln("failed to Do:", err) //nolint
}
// Authenticating and sending second request.
request, err = stun.Build(stun.TransactionID, stun.BindingRequest,
stun.NewUsername(username), nonce, realm,
stun.NewLongTermIntegrity(username, realm.String(), password),
stun.Fingerprint,
)
if err != nil {
log.Fatalln(err) //nolint
}
if err = client.Do(request, func(event stun.Event) {
if event.Error != nil {
log.Fatalln("got event with error:", event.Error) //nolint
}
response := event.Message
if response.Type != stun.BindingSuccess {
var errCode stun.ErrorCodeAttribute
if codeErr := errCode.GetFrom(response); codeErr != nil {
log.Fatalln("failed to get error code:", codeErr) //nolint
}
log.Fatalln("bad message", response, errCode) //nolint
}
var xorMapped stun.XORMappedAddress
if err = response.Parse(&xorMapped); err != nil {
log.Fatalln("failed to parse xor mapped address:", err) //nolint
}
if conn.LocalAddr().String() != xorMapped.String() {
log.Fatalln(conn.LocalAddr(), "!=", xorMapped) //nolint
}
fmt.Println("OK", response, "GOT", xorMapped) //nolint
}); err != nil {
log.Fatalln("failed to Do:", err) //nolint
}
if err := client.Close(); err != nil {
log.Fatalln("failed to close client:", err) //nolint
}
fmt.Println("OK", strings.ToUpper(addr.Network())) //nolint
}
func resolve(network string) net.Addr {
addr := fmt.Sprintf("%s:%d", "stun-server", stun.DefaultPort)
var (
resolved net.Addr
resolveErr error
)
for i := 0; i < 10; i++ {
switch network {
case "udp":
resolved, resolveErr = net.ResolveUDPAddr("udp", addr)
case "tcp":
resolved, resolveErr = net.ResolveTCPAddr("tcp", addr)
default:
panic("unknown network") //nolint
}
if resolveErr == nil {
return resolved
}
time.Sleep(time.Millisecond * 300 * time.Duration(i))
}
panic(resolveErr) //nolint
}
func main() {
test("udp")
test("tcp")
}
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