Method test_truncated_key

tests/test_server.py:476–491

Handshake fails when the Sec-WebSocket-Key header is truncated.

(self)

        )

    def test_truncated_key(self):
        """Handshake fails when the Sec-WebSocket-Key header is truncated."""
        server = ServerProtocol()
        request = make_request()
        del request.headers["Sec-WebSocket-Key"]
        # 12 bytes instead of 16, Base64-encoded
        request.headers["Sec-WebSocket-Key"] = KEY[:16]
        response = server.accept(request)
        server.send_response(response)

        self.assertEqual(response.status_code, 400)
        self.assertHandshakeError(
            server,
            InvalidHeader,
            f"invalid Sec-WebSocket-Key header: {KEY[:16]}",
        )

    def test_missing_version(self):
        """Handshake fails when the Sec-WebSocket-Version header is missing."""