1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
// SPDX-License-Identifier: MIT
// Package main implements a DTLS client using a client certificate.
package main
import (
"context"
"crypto/tls"
"crypto/x509"
"fmt"
"net"
"time"
"github.com/pion/dtls/v3"
"github.com/pion/dtls/v3/examples/util"
)
func main() {
// Prepare the IP to connect to
addr := &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 4444}
//
// Everything below is the pion-DTLS API! Thanks for using it ❤️.
//
certificate, err := util.LoadKeyAndCertificate("examples/certificates/client.pem",
"examples/certificates/client.pub.pem")
util.Check(err)
rootCertificate, err := util.LoadCertificate("examples/certificates/server.pub.pem")
util.Check(err)
certPool := x509.NewCertPool()
cert, err := x509.ParseCertificate(rootCertificate.Certificate[0])
util.Check(err)
certPool.AddCert(cert)
// Prepare the configuration of the DTLS connection
config := &dtls.Config{
Certificates: []tls.Certificate{certificate},
ExtendedMasterSecret: dtls.RequireExtendedMasterSecret,
RootCAs: certPool,
}
// Connect to a DTLS server
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
dtlsConn, err := dtls.Dial("udp", addr, config)
util.Check(err)
defer func() {
util.Check(dtlsConn.Close())
}()
if err := dtlsConn.HandshakeContext(ctx); err != nil {
fmt.Printf("Failed to handshake with server: %v\n", err)
return
}
fmt.Println("Connected; type 'exit' to shutdown gracefully")
// Simulate a chat session
util.Chat(dtlsConn)
}
|
