test_events.py 文件源码

def test_create_server_dual_stack(self):
        f_proto = asyncio.Future(loop=self.loop)

        class TestMyProto(MyProto):
            def connection_made(self, transport):
                super().connection_made(transport)
                f_proto.set_result(self)

        try_count = 0
        while True:
            try:
                port = support.find_unused_port()
                f = self.loop.create_server(TestMyProto, host=None, port=port)
                server = self.loop.run_until_complete(f)
            except OSError as ex:
                if ex.errno == errno.EADDRINUSE:
                    try_count += 1
                    self.assertGreaterEqual(5, try_count)
                    continue
                else:
                    raise
            else:
                break
        client = socket.socket()
        client.connect(('127.0.0.1', port))
        client.send(b'xxx')
        proto = self.loop.run_until_complete(f_proto)
        proto.transport.close()
        client.close()

        f_proto = asyncio.Future(loop=self.loop)
        client = socket.socket(socket.AF_INET6)
        client.connect(('::1', port))
        client.send(b'xxx')
        proto = self.loop.run_until_complete(f_proto)
        proto.transport.close()
        client.close()

        server.close()