"""
python3 /home/server/repositories/repositories/sri-project.demo-py/3rdparty/xclient/xudp.py
"""
import asyncio
import struct


class CustomProtocol:
    def __init__(self):
        self.data_received = asyncio.Future()

    def connection_made(self, transport):
        self.transport = transport

    def datagram_received(self, data, addr):
        self.data_received.set_result((data, addr))

    def connection_lost(self, exc):
        pass

    async def send_message(self, values, addr=('127.0.0.1', 20917)):
        data = struct.pack('!hh', *values)
        self.transport.sendto(data, addr)
        print(f"Sent values: {values}")

        response, _ = await self.data_received
        if response:
            received_values = struct.unpack('!hh', response)
            print(f"Received response: {received_values}")


async def start_client(messages=[(100, 200)]):
    protocol = CustomProtocol()
    transport, _ = await asyncio.get_running_loop().create_datagram_endpoint(
        lambda: protocol,
        remote_addr=('127.0.0.1', 20917)
    )

    try:
        for values in messages:
            await protocol.send_message(values)
    finally:
        transport.close()


if __name__ == "__main__":
    messages = [(100, 200), (300, 400), (500, 600)]  # 示例消息列表
    asyncio.run(start_client(messages=messages))