Android: patch

tunnel/patch.go

@@ -0,0 +1,73 @@
+package tunnel
+
+import (
+	"net"
+
+	C "github.com/Dreamacro/clash/constant"
+)
+
+func relayHijack(left net.Conn, right net.Conn) bool {
+	var l *net.TCPConn
+	var r *net.TCPConn
+	var ok bool
+
+	if l, ok = left.(*net.TCPConn); !ok {
+		return false
+	}
+
+	if r, ok = right.(*net.TCPConn); !ok {
+		return false
+	}
+
+	closed := make(chan struct{})
+
+	go func() {
+		defer close(closed)
+
+		r.ReadFrom(l)
+		r.Close()
+	}()
+
+	l.ReadFrom(r)
+	l.Close()
+
+	<-closed
+
+	return true
+}
+
+func unwrap(conn net.Conn) net.Conn {
+	r := conn
+
+	for {
+		w, ok := r.(C.WrappedConn)
+		if !ok {
+			break
+		}
+		rc, ok := w.RawConn()
+		if !ok {
+			break
+		}
+		r = rc
+	}
+
+	return r
+}
+
+func unwrapPacket(conn net.PacketConn) net.PacketConn {
+	r := conn
+
+	for {
+		w, ok := r.(C.WrappedPacketConn)
+		if !ok {
+			break
+		}
+		rc, ok := w.RawPacketConn()
+		if !ok {
+			break
+		}
+		r = rc
+	}
+
+	return r
+}