我发现了一个使用asyncio编写的TCP客户端和服务端示例:tcp服务器示例。但是如何连接它们以创建TCP代理服务器,从而接收数据并将其发送到其他地址呢?
async def pipe(reader, writer):
try:
while not reader.at_eof():
writer.write(await reader.read(2048))
finally:
writer.close()
这是一个可能的客户端处理程序:
async def handle_client(local_reader, local_writer):
try:
remote_reader, remote_writer = await asyncio.open_connection(
'127.0.0.1', 8889)
pipe1 = pipe(local_reader, remote_writer)
pipe2 = pipe(remote_reader, local_writer)
await asyncio.gather(pipe1, pipe2)
finally:
local_writer.close()
而服务器代码为:
# Create the server
loop = asyncio.get_event_loop()
coro = asyncio.start_server(handle_client, '127.0.0.1', 8888)
server = loop.run_until_complete(coro)
# Serve requests until Ctrl+C is pressed
print('Serving on {}'.format(server.sockets[0].getsockname()))
try:
loop.run_forever()
except KeyboardInterrupt:
pass
# Close the server
server.close()
loop.run_until_complete(server.wait_closed())
loop.close()
127.0.0.1:8889
的连接之前,能否从实际请求中读取local_reader
以获取特定的标头值? - Sreenadh T C