python网络编程（九）

悠悠 2021-12-18 07:23 279阅读 0赞

# 单进程服务器-非堵塞模式 #

### 服务器 ###

#coding=utf-8
    from socket import *
    import time
    
    # 用来存储所有的新链接的socket
    g_socketList = []
    
    def main():
        serSocket = socket(AF_INET, SOCK_STREAM)
        serSocket.setsockopt(SOL_SOCKET, SO_REUSEADDR  , 1)
        localAddr = ('', 7788)
        serSocket.bind(localAddr)
        #可以适当修改listen中的值来看看不同的现象
        serSocket.listen(1000)
        #将套接字设置为非堵塞
        #设置为非堵塞后，如果accept时，恰巧没有客户端connect，那么accept会
        #产生一个异常，所以需要try来进行处理
        serSocket.setblocking(False)
    
        while True:
    
            #用来测试
            #time.sleep(0.5)
    
            try:
                newClientInfo = serSocket.accept()
            except Exception as result:
                pass
            else:
                print("一个新的客户端到来:%s"%str(newClientInfo))
                newClientInfo[0].setblocking(False)
                g_socketList.append(newClientInfo)
    
            # 用来存储需要删除的客户端信息
            needDelClientInfoList = []
    
            for clientSocket,clientAddr in g_socketList:
                try:
                    recvData = clientSocket.recv(1024)
                    if len(recvData)>0:
                        print('recv[%s]:%s'%(str(clientAddr), recvData))
                    else:
                        print('[%s]客户端已经关闭'%str(clientAddr))
                        clientSocket.close()
                        g_needDelClientInfoList.append((clientSocket,clientAddr))
                except Exception as result:
                    pass
    
            for needDelClientInfo in needDelClientInfoList:
                g_socketList.remove(needDelClientInfo)
    
    if __name__ == '__main__':
        main()

### 客户端 ###

#coding=utf-8
    from socket import *
    import random
    import time
    
    serverIp = raw_input("请输入服务器的ip:")
    connNum = raw_input("请输入要链接服务器的次数(例如1000):")
    g_socketList = []
    for i in range(int(connNum)):
        s = socket(AF_INET, SOCK_STREAM)
        s.connect((serverIp, 7788))
        g_socketList.append(s)
        print(i)
    
    while True:
        for s in g_socketList:
            s.send(str(random.randint(0,100)))
    
        # 用来测试用
        #time.sleep(1)

转载于:https://www.cnblogs.com/leecoffee/p/9035544.html