python单线程下实现多个socket并发过程详解
先看服务端的代码
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)
在看客户端的代码,分别使用多线程和多进程实现
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()
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