Add quick listener

relay/server/server.go

@@ -2,14 +2,26 @@ package server
 
 import (
 	"context"
+	"crypto/rand"
+	"crypto/rsa"
 	"crypto/tls"
+	"crypto/x509"
+	"crypto/x509/pkix"
+	"encoding/pem"
+	"math/big"
+	"net"
+	"sync"
+	"time"
 
+	"github.com/hashicorp/go-multierror"
 	log "github.com/sirupsen/logrus"
 	"go.opentelemetry.io/otel/metric"
 
+	nberrors "github.com/netbirdio/netbird/client/errors"
 	"github.com/netbirdio/netbird/relay/auth"
 	"github.com/netbirdio/netbird/relay/server/listener"
 	"github.com/netbirdio/netbird/relay/server/listener/quic"
+	"github.com/netbirdio/netbird/relay/server/listener/ws"
 )
 
 // ListenerConfig is the configuration for the listener.
@@ -24,8 +36,8 @@ type ListenerConfig struct {
 // It is the gate between the WebSocket listener and the Relay server logic.
 // In a new HTTP connection, the server will accept the connection and pass it to the Relay server via the Accept method.
 type Server struct {
-	relay      *Relay
-	wSListener listener.Listener
+	relay     *Relay
+	listeners []listener.Listener
 }
 
 // NewServer creates a new relay server instance.
@@ -39,38 +51,120 @@ func NewServer(meter metric.Meter, exposedAddress string, tlsSupport bool, authV
 		return nil, err
 	}
 	return &Server{
-		relay: relay,
+		relay:     relay,
+		listeners: make([]listener.Listener, 0, 2),
 	}, nil
 }
 
 // Listen starts the relay server.
 func (r *Server) Listen(cfg ListenerConfig) error {
-	r.wSListener = &quic.Listener{
+	wSListener := &ws.Listener{
 		Address:   cfg.Address,
 		TLSConfig: cfg.TLSConfig,
 	}
+	r.listeners = append(r.listeners, wSListener)
 
-	wslErr := r.wSListener.Listen(r.relay.Accept)
-	if wslErr != nil {
-		log.Errorf("failed to bind ws server: %s", wslErr)
+	quicListener := &quic.Listener{
+		Address: cfg.Address,
 	}
 
-	return wslErr
+	if cfg.TLSConfig != nil {
+		quicListener.TLSConfig = cfg.TLSConfig
+	} else {
+		tlsConfig, err := generateTestTLSConfig()
+		if err != nil {
+			return err
+		}
+		quicListener.TLSConfig = tlsConfig
+	}
+	r.listeners = append(r.listeners, quicListener)
+
+	errChan := make(chan error, len(r.listeners))
+	wg := sync.WaitGroup{}
+	for _, l := range r.listeners {
+		wg.Add(1)
+		go func(listener listener.Listener) {
+			defer wg.Done()
+			errChan <- listener.Listen(r.relay.Accept)
+		}(l)
+	}
+
+	wg.Wait()
+	close(errChan)
+	var multiErr *multierror.Error
+	for err := range errChan {
+		multiErr = multierror.Append(multiErr, err)
+	}
+
+	return nberrors.FormatErrorOrNil(multiErr)
 }
 
 // Shutdown stops the relay server. If there are active connections, they will be closed gracefully. In case of a context,
 // the connections will be forcefully closed.
-func (r *Server) Shutdown(ctx context.Context) (err error) {
-	// stop service new connections
-	if r.wSListener != nil {
-		err = r.wSListener.Shutdown(ctx)
+func (r *Server) Shutdown(ctx context.Context) error {
+	var multiErr *multierror.Error
+	for _, l := range r.listeners {
+		if err := l.Shutdown(ctx); err != nil {
+			multiErr = multierror.Append(multiErr, err)
+		}
 	}
 
 	r.relay.Shutdown(ctx)
-	return
+	return nberrors.FormatErrorOrNil(multiErr)
 }
 
 // InstanceURL returns the instance URL of the relay server.
 func (r *Server) InstanceURL() string {
 	return r.relay.instanceURL
 }
+
+// GenerateTestTLSConfig creates a self-signed certificate for testing
+func generateTestTLSConfig() (*tls.Config, error) {
+	log.Infof("generating test TLS config")
+	privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		return nil, err
+	}
+
+	template := x509.Certificate{
+		SerialNumber: big.NewInt(1),
+		Subject: pkix.Name{
+			Organization: []string{"Test Organization"},
+		},
+		NotBefore: time.Now(),
+		NotAfter:  time.Now().Add(time.Hour * 24 * 180), // Valid for 180 days
+		KeyUsage:  x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
+		ExtKeyUsage: []x509.ExtKeyUsage{
+			x509.ExtKeyUsageServerAuth,
+		},
+		BasicConstraintsValid: true,
+		DNSNames:              []string{"localhost"},
+		IPAddresses:           []net.IP{net.ParseIP("192.168.0.10")},
+	}
+
+	// Create certificate
+	certDER, err := x509.CreateCertificate(rand.Reader, &template, &template, &privateKey.PublicKey, privateKey)
+	if err != nil {
+		return nil, err
+	}
+
+	certPEM := pem.EncodeToMemory(&pem.Block{
+		Type:  "CERTIFICATE",
+		Bytes: certDER,
+	})
+
+	privateKeyPEM := pem.EncodeToMemory(&pem.Block{
+		Type:  "RSA PRIVATE KEY",
+		Bytes: x509.MarshalPKCS1PrivateKey(privateKey),
+	})
+
+	tlsCert, err := tls.X509KeyPair(certPEM, privateKeyPEM)
+	if err != nil {
+		return nil, err
+	}
+
+	return &tls.Config{
+		Certificates: []tls.Certificate{tlsCert},
+		NextProtos:   []string{"netbird-relay"},
+	}, nil
+}