python gevent socket

import  sys
import  socket
import time
import  gevent

from  gevent import  socket,monkey

monkey.patch_all()

def server(port):
    s = socket.socket()
    s.bind(('0.0.0.0',port))
    s.listen(500)
    while True:
        cli,addr = s.accept()
        gevent.spawn(handle_request,cli)

def handle_request(conn):
    try:
        data = conn.recv(1024)
        print("recv:",data)
        conn.send(data)
        if not data:
            conn.shutdown(socket.SHUT_WR)

    except Exception as ex:
        print(ex)

    finally:
        conn.close()

if __name__=='__main__':
    server(8001)