回显http服务器龙卷风

Question

How can I create an HTTP echo server from Tornado?

#!/usr/bin/env python

import signal
from tornado.ioloop import IOLoop
from tornado.tcpserver import TCPServer
import tornado.web

def handle_signal(sig, frame):
    IOLoop.instance().add_callback(IOLoop.instance().stop)

class EchoServer(TCPServer):
    def handle_stream(self, stream, address):
        self._stream = stream
        self._read_line()

    def _read_line(self):
        self._stream.read_until('\n' ,self._handle_read)

    def _handle_read(self, data):
        self._stream.write(data, '\n')
        self._read_line()

if __name__ == '__main__':
    signal.signal(signal.SIGINT, handle_signal)
    signal.signal(signal.SIGTERM, handle_signal)
    server = EchoServer()
    server.bind(8001)
    server.start(25)
    IOLoop.instance().start()
    IOLoop.instance().close()

How do I make of this http echo server what's wrong? not much i am newbie Thanks!

Answer 1

1. Your question would be more clear if you explained what happened when you run this code, and what you expected instead.

2. One TCPServer object may handle many connections, so instead of assigning to self.stream in handle_stream , you should make a new object to handle this stream.

3. The second argument to stream.write is a callback; it looks like you meant self._stream.write(data + '\\n') .