The QtNetwork module provides classes to make network programming easier and portable. Qt Network provides a set of APIs for programming applications that use TCP/IP. Operations such as requests, cookies, and sending data over HTTP are handled by various C++ classes.
The Qt Network module offers classes that allow you to write TCP/IP clients and servers. It offers lower-level classes such as QTcpSocket, QTcpServer and QUdpSocket that represent low-level network concepts, and high-level classes such as QNetworkRequest, QNetworkReply and QNetworkAccessManager to perform network operations using common protocols. It also offers classes such as QNetworkConfiguration, QNetworkConfigurationManager and QNetworkSession that implement bearer management.
To use Qt Network classes, add this directive into the C++ files:
#include <QtNetwork>
To link against the module, add this line to your qmake .pro file:
QT += network
The official Qt documentation can be found here for Qt 4.8 and here for Qt 5.
