UDP聊天器案例

import socket

def send_msg():
    """发送数据"""
    dest_ip = input("请输入对方的ip: ")
    dest_port = int(input("请输入对方的端口号: "))
    send_data = input("请输入发送的消息: ")
    udp_socket.sendto(send_data.encode("utf-8"), (dest_ip, dest_prot))

def recv_msg(udp_socket):
    """接收数据"""
    recv_data = udp_socket.recvfrom(1024)
    print("%s:%s"%(str(recv_data[1], recv_data[0].decode("utf-8"))))

def main():
    # 创建套接字
    udp_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    # 绑定信息
    udp_socket.bind(("", 7788))
    # 循环来发送和接收数据
    while True:
        print "xxx聊天器"
        print "1.发送数据"
        print "2.接收数据"
        print "0.退出系统"
        op = input("请输入功能: ")
        if "1" == op:
            # 发送数据
            send_msg(udp_socket)
        elif "2" == op:
            # 接收数据
            recv_msg(udp_socket)
         elif "0" == op:
            break
         else:
             print "输入有误"

if __name__ == "__main__":
    main()