一、python单线程下实现多个socket并发

1.1 服务端

import sys
# import socket
import time
import gevent
from gevent import socket
from gevent import monkey

monkey.patch_all()


# 类似于python中的黑魔法，把很多模块的阻塞的变成非阻塞的，比如socket中的rece和send都变
# 为不阻塞了


def server(port):
    s = socket.socket()
    s.bind(("127.0.0.1", port))
    s.listen(2000)
    while True:
        cli, add = s.accept()
        gevent.spawn(handle_request, cli)
        # 通过gevent的启动一个协程，把客户端的socket对象传进去


def handle_request(s):
    try:
        while True:
            data = s.recv(1024)
            print("收到的信息:", str(data, encoding="utf-8"))
            s.send(data)
            if not data:
                s.shutdown(socket.SHUT_WR)
                # 把和客户端这个链接销毁
    except Exception as ex:
        print(ex)
    finally:
        s.close()


if __name__ == '__main__':
    server(8000)

1.2 客户端

import socket
import gevent
import threading
import multiprocessing
'''
ip_bind = ("127.0.0.1",8000)
c = socket.socket()
c.connect(ip_bind)
while True:
    data = input("客户端:")
    c.send(bytes(data,encoding="utf-8"))
    data = c.recv(1024)
    print("服务端:",str(data,encoding="utf-8"))
 
c.close()
'''
import socket
import gevent
ip_bind = ("127.0.0.1",8000)
c = socket.socket()
c.connect(ip_bind)
def f(n):
    while True:
        # c.send(bytes(n,encoding="utf-8"))
        data = str(n)
        c.send(bytes(data,encoding="utf-8"))
        data = c.recv(1024)
        print("server:",str(data,encoding="utf-8"))
    c.close()
x = []
if __name__ == '__main__':
    l = []
    """
    多线程实现并发客户端
        for i in range(500):
         t = threading.Thread(target=f,args=[str(i),])
         t.start()
         l.append(t)
    for t in l:
         t.join()
 
    """
    # 多进程实现并发客户端
    for i in range(100):
        p = multiprocessing.Process(target=f,args=[i,])
        p.start()
        l.append(p)
    for p in l:
        p.join()