Python51_案例：多任务版UDP聊天器

from socket import *
import threading

def recv_msg(udp_socket):
    """
    接收数据并显示
    :return:
    """
    while True:
        recv_data, dest_addr = udp_socket.recvfrom(1024)    #注意：recvfrom是等待接收，不需要地址
        recv_data = recv_data.decode("utf-8")
        print("{}:{}".format(dest_addr, recv_data))

def send_msg(udp_socket, dest_addr):
    while True:
        send_data = input(">").encode("utf-8")
        udp_socket.sendto(send_data, dest_addr)

def main():
    udp_socket = socket(AF_INET,SOCK_DGRAM) # 创建套接字

    # 绑定本地信息
    local_addr = ("", 8888)
    udp_socket.bind(local_addr)

    # 获取对方ip和port
    dest_ip = input("dest ip:")
    dest_port = input(input("dest port:"))
    dest_addr = (dest_ip, dest_port)

    t_recv = threading.Thread(target=recv_msg, args=(udp_socket,))
    t_send = threading.Thread(target=send_msg, args=(udp_socket, dest_addr))

    t_recv.start()
    t_send.start()


if __name__ == "__main__":
    main()