[Solved] Hi guys! Needing help getting QT to play nice with WinSock
Now I've been programming QT for little over a month now so forgive some of the more n00bish statements I may make however I have a rather annoying problem I can't sort.
I cannot seem to get QUdpSocket and WinSock to play nice with each other. The idea is that a TCP/IP connection is established (which works fine) and then a test packet is sent from WinSock to QT on a remote server.
Now just to rule out a few things to make sure it was me being a n00b and not a breakdown in communication I have also put a QString message in to ensure that something is being displayed.
The data is being statically generated from WinSock and being picked up by a combination of QTcpServer and QTcpSocket where the data needs to be converted into a QString and then added as an item in a QListWidget.
I've tried about 1000 combinations now and am beginning to lose any sense of logic if i'm honest, so I have no idea if the problem lies in the network communication itself, or the data types or whatever!
QT 4.7.1 - QT Creator
QTcpSocket *clients = tcpserver->nextPendingConnection();
connect(clients, SIGNAL(disconnected()), clients, SLOT(deleteLater()));
ui->lstViewer->addItem("Client Connected: " + clients->peerAddress().toString()); int newdatasize = clients->bytesAvailable(); QByteArray newdata = clients->readData(clients->bytesToWrite(), newdatasize); QString passthrough=newdata; ui->lstViewer->addItem(tr("Packet Received: \"%1\"").arg(passthrough)); clients->disconnectFromHost(); ui->lstViewer->addItem("Client Disconnected");
Visual Studio 2010 Ultimate Edition - C/C++ - Windows Application
@//SeverChatter - This week bots and girls we will we mainly talking TCP
using namespace std;
#define MAIN_PORT "6688"
//Grab the WinTalk instance and have our wikid way with it
mywin = wintalk;
//Declare useless stuff here
ConnectSocket = INVALID_SOCKET;
//WinSock 2.2 not available - Should only be the case for emulators and pre-xp machines - neither of which are our concern
wintalk->SystemText(std::wostringstream(L"Cannot find WinSock 2.2 - Are you using emulators you cheeky devil??"));
//Null that mother fuker!
ZeroMemory( &hints, sizeof(hints) );
//Fill structure with information (IPv4, Streaming Socket, TCP/IP)
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
//Now just make sure we are all alive and well before we go crazy connecting things
results = getaddrinfo("22.214.171.124", MAIN_PORT, &hints, &result);
//Could not find server - Will be common if people run Igma.exe during server downtime
wintalk->SystemText(std::wostringstream(L"Cannot find server...Are you sure your connected to the tinterweb??"));
//Finally we can trust ourselves
ptr = result;
//Hit that socket up
ConnectSocket = socket(ptr->ai_family, ptr->ai_socktype, ptr->ai_protocol);
//Check for socket creation
//Unable to create socket - somethings wrong - not really sure what could go wrong mind??
wintalk->SystemText(std::wostringstream(L"Unable to use socket on port 6688 - Are you using this already??"));
//Right...Lets give this network thing a go (wheres .NET when you need it :-()
results = connect(ConnectSocket, ptr->ai_addr, (int)ptr->ai_addrlen);
//If we can't connect to the server then close the socket down and walk away from the 100 car pile-up
wintalk->SystemText(std::wostringstream(L"Cannot connect to server..."));
#define DEFAULT_BUFLEN 512
//string sendbuf("This is a test message");
//char *array = new char[sendbuf.size()];
//std::copy(sendbuf.begin(), sendbuf.end(), array);
results=send( ConnectSocket, "Hello!",DEFAULT_BUFLEN, 0 );
mywin->SystemText(std::wostringstream(L"Unable to send message - Don't know why - Cos its gay...That'll do"));
//delete  array;
Now I realise that I'm using blocking sockets etc etc its more a case of getting this working so I can build on it - Please help!
Try to wait for data to be available (either via signal or via waitForReadyRead)
Thank You very much that seemed to work lovely - The packets that I am receiving after the first are a bit gobbledegook but that is another program for another day.
Thanks again :-D