How do I know which version of Qt I am using? When I open Qt Creator it shows "Welcome to Qt Creator 2.3". In the build setting, however, it shows Qt Version 4.7.1.

I am using Qt and QTcpSocket to create a small chat client/server application. When I compile my code, the compiler returns the following error: main.cpp:3:22: fatal error: QTcpSocket: No such fi...

When using QTcpSocket to receive data, the signal to use is readyRead(), which signals that new data is available. However, when you are in the corresponding slot implementation to read the data, ...

I'm trying to write a piece of code that periodically tries to connect to the server using QTcpSocket until the server is up and ready. The client should also automatically and periodically try rec...

I need to send binary data through a QTcpSocket. I was thinking about using QDataStream, but I've encountered a problem - it silently fails if no data has arrived at the time I try to read. For ex...

I am looking to create a QTcpServer using PyQt that can simultaneously return data to 2 or more clients. I assume that this will require threading. Using the threadedfortuneserver.py example as a ...

I've got a threaded server. QTcpSocket needs to be created on the thread it needs to be ran on, FI: Qt - Handle QTcpSocket in a new thread by passing the socket descriptor. My problem is that, I ...

I have created a sslclient and sslserver using QSslSocket in Qt 5.4.1 in debian wheezy. When I run the program they dont work at all. After debuging my code I saw when it try to create a new object...

Please advise how can I setup default connection timeout without using blocking waitForConnected() method? I noticed that socket emit error signal (QAbstractSocket::SocketTimeoutError) after about ...

I'm attempting to multi-thread server in QT. However, I keep getting this annoying error: error: Not a signal or slot declaration (Line 21) Here is my code: mythread.h #ifndef MYTHREAD_H #de...

I'm writing a program that will do 1 GET request a second to a server. I am using a socket (QTcpSocket), and I want to know if I should include "Connection: Close" within my request and then recrea...

Now the server (implemented with java) will send some stream data to me, my code is like below: connect(socket, SIGNAL(readyRead()), this, SLOT(read_from_server())); in the read_from_server(): ...

I create simple multi threading server: Create server If new connection create new QThreadpool - QRunnable In runnable send message to client and wait request If client was been disconnected runn...

I have a QTcpSocket and I am reading into a loop. Each time a full packet has been read, or there has been an error, I manually check the status of the socket inside the loop, with: while(true){ ...

I have the following snippet of code in the body of a loop responsible for reading data from a QTcpSocket (nntp is a pointer to a QTcpSocket). std::vector<char> buffer; int bytesAvailable = ...

I want to know about Qt's implementation of QTcpSocket's ReadyRead signal. How is it implemented on Windows and on Linux? Using select(), poll(), epoll(), SIGIO or any other way? How does QTcpSocke...

Is it possible to create a new QSslSocket and for it to take ownership over the existing TCP connection, and the old QTcpSocket to be discarded, without interrupting or closing the TCP connection? ...

Is there any simple way to send a file to server with the filename included so that the filename in server and client are exactly the same? Here is my code Sender QString path = QApplication::ap...

I'm using Qt to create TCP server using QTcpServer. Every time a client connects to server, I would like to know the remote host's IP address and port number. I tried searching documentation but co...

I've been struggling for a couple of days now with this problem on QTcpSockets and QThreads. I have a QTcpServer that listens on a port and creates a new Client using the nextPendingConnection(). ...

I'm a little confused on the behavior of QTcpSocket::waitForBytesWritten()... Until when does this function block? Until the data is written to the OS's internal buffer for transmission over TCP...