Gevent-socket

1. 通过Gevent实现单线程下的多socket并发。

server 端：

#server side
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) #只要过来一个请求，就起一个协程，把cli交给handle_request

def handle_request(conn): #类似于socket-server里面的handler()方法，所有跟客户端的交互都在handle()里面完成。
    try:
        while True:
            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)

Client 端：

import socket
HOST = 'localhost'  # The remote host
PORT = 8001  # The same port as used by the server

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((HOST, PORT))

while True:
    msg = bytes(input(">>:"), encoding="utf8")
    s.sendall(msg)
    data = s.recv(1024)
    # print(data)
    print('Received', repr(data))  #repr：格式化输出

s.close()

 运行结果：实现了并发

2.