XMPP client and server library

c-plus-plus, cmake, qt, qt5, xmpp, xmpp-library
inqlude install qxmpp


Build Status


QXmpp is a cross-platform C++ XMPP client and server library. It is written in C++ and uses Qt framework.

QXmpp strives to be as easy to use as possible, the underlying TCP socket, the core XMPP RFCs (RFC3920 and RFC3921) and XMPP extensions have been nicely encapsulated into classes. QXmpp comes with full API documentation, automatic tests and many examples.

QXmpp uses Qt extensively, and as such users need to a have working knowledge of C++ and Qt basics (Signals and Slots and Qt data types).

Qt is the only third party library which is required to build QXmpp, but libraries such as speex and theora enable additional features.

QXmpp is released under the terms of the GNU Lesser General Public License, version 2.1 or later.


QXmpp requires Qt 4.5 or higher (including Qt 5.x) with SSL enabled and it uses the standard qmake build system of Qt.

Build from command line:

cd <where qxmpp.pro is located>
qmake <arguments>
<respective-make-cmd = gmake, make, mingw32-make, nmake>

You can pass the following arguments to qmake:

PREFIX=<prefix>               to change the install prefix
                                  unix:  /usr/local on unix
                                  other: $$[QT_INSTALL_PREFIX]
QXMPP_AUTOTEST_INTERNAL=1     to enabled internal autotests
QXMPP_LIBRARY_TYPE=staticlib  to build a static version of QXmpp
QXMPP_USE_DOXYGEN=1           to build the HTML documentation
QXMPP_USE_OPUS=1              to enable opus audio codec
QXMPP_USE_SPEEX=1             to enable speex audio codec
QXMPP_USE_THEORA=1            to enable theora video codec
QXMPP_USE_VPX=1               to enable vpx video codec

Note: by default QXmpp is built as a shared library. If you decide to build a static library instead, you will need to pass -DQXMPP_STATIC when building your programs against QXmpp.

Build using Qt Creator:

Open the qxmpp.pro file in Qt Creator and hit "Build All" to build all the examples and library.


After building QXmpp, you can install the Headers, Libraries and Documentation using the following command:

Install from command line:

<respective-make-cmd = gmake, make, mingw32-make, nmake> install

Path of installations:

Headers:            PREFIX/include/qxmpp
Library:            PREFIX/lib
API Documentation:  PREFIX/share/doc/qxmpp

To link against the shared version of QXmpp, you need to add -DQXMPP_SHARED to your C++ flags.


Look at the example directory for various examples. Here is a description of a few.

  • example_0_connected This example just connects to the xmpp server and start receiving presences (updates) from the server. After running this example, you can see this user online, if it's added in your roster (friends list).

  • example_1_echoClient This is a very simple bot which echoes the message sent to it. Run this example, send it a message from a friend of this bot and you will receive the message back. This example shows how to receive and send messages.

  • GuiClient This is a full fledged Graphical XMPP client. This example will uses most of the part of this library.


You can find the API documentation for the latest QXmpp version here:



It should work on all the plaforms supported by Qt. For a complete list of platforms support by Qt, see:


In past, we have tested on variety of platforms:

win32-g++        (Qt SDK)
win32-msvc2008   (Qt MSVC-2008)
win64-msvc2008   (Qt MSVC-2008)
symbian-gcce     (Nokia Qt SDK)
linux-g++        (32-bit and 64-bit)
macos-g++        (32-bit and 64-bit)

Please note that on Symbian, you will need to make sure your add the "NetworkServices" to your application to enable it to access the network. You can do this by adding the following to your .pro file:

TARGET.CAPABILITY = "NetworkServices"


If you think you have found a bug in QXmpp, we would like to hear about it so that we can fix it. Before reporting a bug, please check if the issue is already know at:



Join QXmpp Discussion Group for queries, discussions and updates.