Re: [PyQt] Having a problem with QTcpSocket

[Nick Gaens]

Phil Thompson schreef: On Sat, 21 Nov 2009 17:19:00 +0100, Nick Gaens <nickga...@gmail.com> wrote: Hello all, I'm trying to get two clients to speak to each other, using an instance of QtNetwork.QTcpSocket for each client. The clients are on different computers with IP's: 192.168.1.100 and .102 On the first client, I run the code below: ------------------ def __init__(self): self.socket = QtNetwork.QTcpSocket(self) self.socket.setLocalAddress(QtNetwork.QHostAddress("192.168.1.100")) self.socket.setLocalPort(55555) self.socket.readyRead.connect(self.receiveData) def connectToOtherClient(self, ip): self.socket.connectToHost(QtNetwork.QHostAddress(ip), 55555) if self.socket.waitForConnected(10000): print "Connected!" else: print self.socket.state() # Prints '0' (zero), meaning UnconnectedState ------------------ So I create a QTcpSocket, I tell it the IP I want to use and after having the user asking for the remote IP address, connectToOtherClient() is invoked. On the second client, I just create an instance of this class, using "192.168.1.102" as IP there in __init__(). No invocation of connectToOtherClient() there, ofcourse.. The problem is: it doesn't connect at all.. The socket state remains "UnconnectedState".. What am I doing wrong here? Clients talk to servers, not other clients. Have a look at QTcpServer. Phil I've now instantiated a QTcpServer, which "creates" a socket for an incoming connection (QTcpServer.nextPendingConnection(), that is). Both clients have such a server instance, since they both should be able to connect to each other. But still, the QTcpSocket.connectToHost() invocation doesn't do a thing. I'm starting to think this is some bug / error in PyQt4 itself instead of in my code. The C++-Qt4 Fortune Server + Client example runs flawlessly between the two machines, so there are no network blocks or something like that. Also, the C++-code has the same logical flow as my code below. ---------------------------- def __init__(self):         self.server = QtNetwork.QTcpServer(self)         self.server.serverPort = 55555         self.server.newConnection.connect(self.clientConnecting)         self.server.listen() # defaults to QHostAddress.Any def clientConnecting(self): # used by the "server"         if self.server.hasPendingConnections():             connectingClient = self.server.nextPendingConnection()             connectingClient.readyRead.connect(self.receiveData) def connectToClient(self, ip):  # used by the "client"         socket = QtNetwork.QTcpSocket()         socket.readyRead.connect(self.receiveData)         socket.connectToHost(QtNetwork.QHostAddress(ip), 55555) # ip of server         if socket.waitForConnected(5000):             print "Connected!" ---------------------------- I *really* do not understand why this is *not* working.. Nick

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