Add Datagram transport

transport/internet/quic/conn.go

@@ -0,0 +1,61 @@
+package quic
+
+import (
+	"context"
+	"time"
+
+	"github.com/xtls/quic-go"
+	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/net"
+)
+
+type interConn struct {
+	ctx      context.Context
+	quicConn quic.Connection
+	local    net.Addr
+	remote   net.Addr
+}
+
+func (c *interConn) Read(b []byte) (int, error) {
+	received, e := c.quicConn.ReceiveDatagram(c.ctx)
+	if e != nil {
+		return 0, e
+	}
+	nBytes := copy(b, received[:])
+	return nBytes, nil
+}
+
+func (c *interConn) WriteMultiBuffer(mb buf.MultiBuffer) error {
+	mb = buf.Compact(mb)
+	mb, err := buf.WriteMultiBuffer(c, mb)
+	buf.ReleaseMulti(mb)
+	return err
+}
+
+func (c *interConn) Write(b []byte) (int, error) {
+	return len(b), c.quicConn.SendDatagram(b)
+}
+
+func (c *interConn) Close() error {
+	return nil
+}
+
+func (c *interConn) LocalAddr() net.Addr {
+	return c.local
+}
+
+func (c *interConn) RemoteAddr() net.Addr {
+	return c.remote
+}
+
+func (c *interConn) SetDeadline(t time.Time) error {
+	return nil
+}
+
+func (c *interConn) SetReadDeadline(t time.Time) error {
+	return nil
+}
+
+func (c *interConn) SetWriteDeadline(t time.Time) error {
+	return nil
+}