Python P2P套接字聊天脚本仅在家庭网络上工作(不在学校网络上)

时间:2014-10-02 16:11:23

标签: python sockets networking

对于使用套接字的P2P聊天程序,我有以下python脚本(我知道有点效率低):

#!usr/bin/env python

import socket import threading import select import time import datetime

def main():

    class Chat_Server(threading.Thread):
            def __init__(self):
                threading.Thread.__init__(self)
                self.running = 1
                self.conn = None
                self.addr = None
            def run(self):
                HOST = ''
                PORT = 23647
                s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
                s.bind((HOST,PORT))
                s.listen(1)
                self.conn, self.addr = s.accept()
                # Select loop for listen
                while self.running == True:
                    inputready,outputready,exceptready \
                      = select.select ([self.conn],[self.conn],[])
                    for input_item in inputready:
                        # Handle sockets
                        message = self.conn.recv(1024)
                        if message:
                            print "Daniel: " + message + ' (' + datetime.datetime.now().strftime('%H:%M:%S') + ')'
                        else:
                            break
                    time.sleep(0)
            def kill(self):
                self.running = 0

    class Chat_Client(threading.Thread):
            def __init__(self):
                threading.Thread.__init__(self)
                self.host = None
                self.sock = None
                self.running = 1
            def run(self):
                PORT = 23647
                self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                self.sock.connect((self.host, PORT))
                # Select loop for listen
                while self.running == True:
                    inputready,outputready,exceptready \
                      = select.select ([self.sock],[self.sock],[])
                    for input_item in inputready:
                        # Handle sockets
                        message = self.sock.recv(1024)
                        if message:
                            print "Daniel: " + message + ' (' + datetime.datetime.now().strftime('%H:%M:%S') + ')'
                        else:
                            break
                    time.sleep(0)
            def kill(self):
                self.running = 0

    class Text_Input(threading.Thread):
            def __init__(self):
                threading.Thread.__init__(self)
                self.running = 1
            def run(self):
                while self.running == True:
                  text = raw_input('')
                  try:
                      chat_client.sock.sendall(text)
                  except:
                      Exception
                  try:
                      chat_server.conn.sendall(text)
                  except:
                      Exception
                  time.sleep(0)
            def kill(self):
                self.running = 0

    # Prompt, object instantiation, and threads start here.

    ip_addr = raw_input('Type IP address or press enter: ')

    if ip_addr == '':
        chat_server = Chat_Server()
        chat_client = Chat_Client()
        chat_server.start()
        text_input = Text_Input()
        text_input.start()

    else:
        chat_server = Chat_Server()
        chat_client = Chat_Client()
        chat_client.host = ip_addr
        text_input = Text_Input()
        chat_client.start()
        text_input.start()

if __name__ == "__main__":
    main()

此脚本在家庭网络中运行良好,具有192.168 ...内部IP地址。

在学校网络上,使用172 ... IP地址,它似乎不起作用。没有连接错误,但是不发送或接收消息,除非在同一台具有相同内部IP地址的计算机上运行两个应用程序实例,在这种情况下程序可以正常运行。

我对套接字和这种网络很新,所以我想知道是否有人可以向我指出为什么会这样。可能是IP地址的差异,例如?

提前谢谢。

1 个答案:

答案 0 :(得分:1)

我看到你在23647端口上连接了 - 你可能无法在学校网络上访问它。检查此端口是否启用了流量。有关详细信息,请参阅:Port Forwarding

类似于:this site/tool可能会让您快速检查。