Method test_sendfile

Lib/test/test_ssl.py:4731–4755

Try to send a file using kTLS if possible.

(self)

            self.assertRaises(ValueError, s.write, b'hello')

    def test_sendfile(self):
        """Try to send a file using kTLS if possible."""
        TEST_DATA = b"x" * 512
        with open(os_helper.TESTFN, 'wb') as f:
            f.write(TEST_DATA)
        self.addCleanup(os_helper.unlink, os_helper.TESTFN)
        client_context, server_context, hostname = testing_context()
        client_context.options |= getattr(ssl, 'OP_ENABLE_KTLS', 0)
        server = ThreadedEchoServer(context=server_context, chatty=False)
        # kTLS seems to work only with a connection created before
        # wrapping `sock` by the SSL context in contrast to calling
        # `sock.connect()` after the wrapping.
        with server, socket.create_connection((HOST, server.port)) as sock:
            with client_context.wrap_socket(
                sock, server_hostname=hostname
            ) as ssock:
                if support.verbose:
                    ktls_used = ssock._sslobj.uses_ktls_for_send()
                    print(
                        'kTLS is',
                        'available' if ktls_used else 'unavailable',
                    )
                with open(os_helper.TESTFN, 'rb') as file:
                    ssock.sendfile(file)
                self.assertEqual(ssock.recv(1024), TEST_DATA)

    def test_session(self):
        client_context, server_context, hostname = testing_context()