python socket 入门

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server：

<span style="font-family:Courier New;font-size:18px;"><span style="font-family:Courier New;font-size:14px;">import socketimport sysHOST=''PORT=21567BUFSIZE=1024ADDR=(HOST,PORT)try:    tcpSerSock=socket.socket(socket.AF_INET,socket.SOCK_STREAM)    print('socket created.')except (socket.error,msg):    print('failed to create socket.Error code:'+ str(msg[0]) + ' , Error message : ' + msg[1])    sys.exit()tcpSerSock.bind(ADDR)tcpSerSock.listen(5)    # allow 5 connectionwhile True:    print('waiting for connetion...')    tcpCliSock,addr=tcpSerSock.accept()    print('...connected from:',addr)    while True:        data=tcpCliSock.recv(BUFSIZE).decode()        print(data)        if not data:            break        tcpCliSock.send(('you typed '+data).encode())    tcpCliSock.close()    #diff here.see python core programmingtcpSerSock.close()</span></span>

client：

<span style="font-family:Courier New;font-size:18px;"><span style="font-family:Courier New;font-size:14px;">import socketimport sysHOST='localhost'PORT=21567    #must be same to server'sBUFSIZE=1024ADDR=(HOST,PORT)try:    tcpCliSock=socket.socket(socket.AF_INET,socket.SOCK_STREAM)    print('socket created.')except (socket.error,msg):    print('failed to create socket.Error code:'+ str(msg[0]) + ' , Error message : ' + msg[1])    sys.exit()tcpCliSock.connect(ADDR)while True:    data=input('>')    if not data:    #enter to end        break    tcpCliSock.send(data.encode())    data=tcpCliSock.recv(BUFSIZE).decode()    #since 'str' is different from unicodestring in python3    if not data:    #recv err,end        break    print(data)tcpCliSock.close()</span></span>

建议在cmd下运行

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