#includeQTcpSocket socket; socket.connectToHost("example.com", 12345); if (socket.waitForConnected(5000)) { // Connection established // Do something with the socket } else { // Connection failed or timed out // Display an error message }
#includeThis example starts a new QTcpServer and uses its listen method to listen on all available network interfaces on port 12345. It then uses waitForNewConnection to wait for a new client connection to be established, again with a timeout of 5 seconds. If a new connection is received, we use nextPendingConnection to accept the connection and create a new QTcpSocket object. We then use waitForConnected to wait for the socket to be connected to the client, with another timeout of 5 seconds. If the connection is established, we execute the code inside the if statement, otherwise we execute the code inside the else statement. Package library: QTcpSocket and QTcpServer are both part of the Qt networking module, which is included in the Qt framework.#include QTcpServer server; server.listen(QHostAddress::Any, 12345); QTcpSocket socket; if (server.waitForNewConnection(5000)) { socket = server.nextPendingConnection(); if (socket.waitForConnected(5000)) { // Connection established // Do something with the socket } else { // Connection failed or timed out // Display an error message } } else { // No new connections received or timed out // Display an error message }