Python socket C/S結構的聊天室應用

服務端：

#!/usr/bin/env python#coding:utf8 import socket,selectdef broadcast_data (sock,message): for socket in conn_list:  if socket != server_socket and socket != sock :   try :    socket.send(message)   except :    socket.close()    conn_list.remove(socket) if __name__ == "__main__": conn_list = [] recv_buffer = 4096 PORT = 9999  server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) #端口重用,可選 server_socket.bind(('', PORT)) server_socket.listen(99)  conn_list.append(server_socket)  print "Chat server started on port " + str(PORT)  while 1:  read_sockets,write_sockets,error_sockets = select.select(conn_list,[],[])  for sock in read_sockets:   #新建連接   if sock == server_socket:    sockfd, addr = server_socket.accept()    conn_list.append(sockfd)    print "Client (%s, %s) connected" % addr    broadcast_data(sockfd, "[%s:%s] entered room/n" % addr)   #進入聊天室   else:    try:     data = sock.recv(recv_buffer)     if data:      broadcast_data(sock, "/r" + '<' + str(sock.getpeername()) + '> ' + data)    except:     broadcast_data(sock, "Client (%s, %s) is offline" % addr)     print "Client (%s, %s) is offline" % addr     sock.close()     conn_list.remove(sock)     continue  server_socket.close()

客戶端：

#!/usr/bin/env python#coding:utf8import socket,select,string,sys def prompt() : sys.stdout.write('<You> ') sys.stdout.flush() if __name__ == "__main__":  if(len(sys.argv) < 3) :  print 'Usage : python chat_client.py hostname port'  sys.exit()  HOST = sys.argv[1] PORT = int(sys.argv[2])  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(2)  try :  s.connect((HOST, PORT)) except :  print 'Unable to connect'  sys.exit()  print 'Connected to remote host. Start sending messages' prompt()  while 1:  socket_list = [sys.stdin, s]   read_sockets, write_sockets, error_sockets = select.select(socket_list , [], [])   for sock in read_sockets:   if sock == s:    data = sock.recv(4096)    if not data :     print '/nDisconnected from chat server'     sys.exit()    else :     sys.stdout.write(data)     prompt()    else :    msg = sys.stdin.readline()    s.send(msg)    prompt()