Question

我正在编写一个需要在两台电脑之间进行通信的程序。我知道如何连接和发送消息给对方。当用户打开程序时，它应该监听连接。但是，如果用户点击“连接”，程序应该停止侦听连接并改为连接到用户。我应该怎么做呢？我现在已经做到了这一点：

主要

@threaded
def getOnline(self):
   # fires when the user opens the program
    client.connect(PORT)

@threaded
def connect(self):
    # when the user clicks connect
    global IS_MASTER
    IS_MASTER = True
    print('Master:', IS_MASTER)
    if IS_MASTER:
        client.closeConnection()
        server.connect(CLIENT_IP, PORT)

客户端

class Client():

    def __init__(self):
        self.s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    def connect(self, port):
        print('Listening to connections')
        self.s.bind(('', port))
        self.s.listen(1)
        conn, addr = self.s.accept()
        print('Connected by:', addr)

    def closeConnection(self):
        print('Not listening any longer')
        self.s.close()
        sys.exit()

服务器

class Server():

    def __init__(self):
        self.s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    def connect(self, host, port):
        self.s.connect((host, port))
        print('Connected to:', host)

现在，当我点击“连接”时我得到：＆＃39; ConnectionAbortedError：[Errno 53]软件导致连接中止＆＃39;。

非常感谢任何帮助！

修改
完全追溯

Exception in thread Thread-1:
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/threading.py", line 639, in _bootstrap_inner
    self.run()
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/threading.py", line 596, in run
    self._target(*self._args, **self._kwargs)
  File "/Users/cedricgeerinckx/Dropbox/Redux/OSX/Redux.py", line 28, in wrapped_f
    ret = f(*args, **kwargs)
  File "/Users/cedricgeerinckx/Dropbox/Redux/OSX/Redux.py", line 204, in getOnline
    client.connect(PORT)
  File "/Users/cedricgeerinckx/Dropbox/Redux/OSX/Client.py", line 14, in connect
    conn, addr = self.s.accept()
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/socket.py", line 135, in accept
    fd, addr = self._accept()

Answer 1

在您的getOnline方法中抛出该异常，该方法在启动时运行。这意味着当connect方法关闭该方法中的连接时，会发生异常。您应该只在getOnline：

中处理异常

@threaded
def getOnline(self):
   # fires when the user opens the program
    try:
        client.connect(PORT)
    except ConnectionAbortedError as e:
        print("Connection shut down!")

Python - 确定用户是服务器还是客户端

1 个答案: