add webtransport tunnel

internal/util/wt/conn.go

@@ -0,0 +1,52 @@
+package wt
+
+import (
+	"net"
+	"time"
+
+	wt "github.com/quic-go/webtransport-go"
+)
+
+type conn struct {
+	session *wt.Session
+	stream  wt.Stream
+}
+
+func Conn(session *wt.Session, stream wt.Stream) net.Conn {
+	return &conn{
+		session: session,
+		stream:  stream,
+	}
+}
+
+func (c *conn) Read(b []byte) (n int, err error) {
+	return c.stream.Read(b)
+}
+
+func (c *conn) Write(b []byte) (n int, err error) {
+	return c.stream.Write(b)
+}
+
+func (c *conn) Close() error {
+	return c.stream.Close()
+}
+
+func (c *conn) LocalAddr() net.Addr {
+	return c.session.LocalAddr()
+}
+
+func (c *conn) RemoteAddr() net.Addr {
+	return c.session.RemoteAddr()
+}
+
+func (c *conn) SetDeadline(t time.Time) error {
+	return c.stream.SetDeadline(t)
+}
+
+func (c *conn) SetReadDeadline(t time.Time) error {
+	return c.stream.SetReadDeadline(t)
+}
+
+func (c *conn) SetWriteDeadline(t time.Time) error {
+	return c.stream.SetWriteDeadline(t)
+}