TUN-5623: Configure quic max datagram frame size to 1350 bytes for none Windows platforms

datagramsession/session.go

@@ -114,7 +114,7 @@ func (s *Session) dstToTransport(buffer []byte) error {
 			s.log.Debug().
 				Str("session", s.ID.String()).
 				Int("len", n).
-				Uint("mtu", s.transport.MTU()).
+				Int("mtu", s.transport.MTU()).
 				Msg("dropped packet exceeding MTU")
 		}
 	}

datagramsession/transport.go

@@ -9,5 +9,5 @@ type transport interface {
 	// ReceiveFrom reads the next datagram from the transport
 	ReceiveFrom() (uuid.UUID, []byte, error)
 	// Max transmission unit to receive from the transport
-	MTU() uint
+	MTU() int
 }

datagramsession/transport_test.go

@@ -22,8 +22,8 @@ func (mt *mockQUICTransport) ReceiveFrom() (uuid.UUID, []byte, error) {
 	return mt.reqChan.Receive(context.Background())
 }
 
-func (mt *mockQUICTransport) MTU() uint {
-	return 1217
+func (mt *mockQUICTransport) MTU() int {
+	return 1280
 }
 
 func (mt *mockQUICTransport) newRequest(ctx context.Context, sessionID uuid.UUID, payload []byte) error {