Add quic transporter

relay/client/dialer/quic/conn.go

@@ -0,0 +1,52 @@
+package quic
+
+import (
+	"net"
+
+	"github.com/quic-go/quic-go"
+	log "github.com/sirupsen/logrus"
+)
+
+type Conn struct {
+	quic.Stream
+	qConn quic.Connection
+}
+
+func NewConn(stream quic.Stream, qConn quic.Connection) net.Conn {
+	return &Conn{
+		Stream: stream,
+		qConn:  qConn,
+	}
+}
+
+func (q *Conn) Write(b []byte) (n int, err error) {
+	log.Debugf("writing: %d, %x\n", len(b), b)
+	n, err = q.Stream.Write(b)
+	if n != len(b) {
+		log.Errorf("failed to write out the full message")
+	}
+	return
+}
+
+func (q *Conn) Close() error {
+	err := q.Stream.Close()
+	if err != nil {
+		log.Errorf("failed to close stream: %s", err)
+		return err
+	}
+	err = q.qConn.CloseWithError(0, "")
+	if err != nil {
+		log.Errorf("failed to close connection: %s", err)
+		return err
+
+	}
+	return err
+}
+
+func (c *Conn) LocalAddr() net.Addr {
+	return c.qConn.LocalAddr()
+}
+
+func (c *Conn) RemoteAddr() net.Addr {
+	return c.qConn.RemoteAddr()
+}

relay/client/dialer/quic/quic.go

@@ -0,0 +1,32 @@
+package quic
+
+import (
+	"context"
+	"crypto/tls"
+	"net"
+
+	"github.com/quic-go/quic-go"
+	log "github.com/sirupsen/logrus"
+)
+
+func Dial(address string) (net.Conn, error) {
+	tlsConf := &tls.Config{
+		InsecureSkipVerify: true,
+		NextProtos:         []string{"quic-echo-example"},
+	}
+	qConn, err := quic.DialAddr(context.Background(), address, tlsConf, &quic.Config{
+		EnableDatagrams: true,
+	})
+	if err != nil {
+		log.Errorf("dial quic address %s failed: %s", address, err)
+		return nil, err
+	}
+
+	stream, err := qConn.OpenStreamSync(context.Background())
+	if err != nil {
+		return nil, err
+	}
+
+	conn := NewConn(stream, qConn)
+	return conn, nil
+}