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Introducing Nt With the Qt-based NNetworkSocket Class

August 17, 2013 Leave a comment

While recently working on a project involving C++, Qt and networking using TCP sockets I came across a nasty surprise in the form of blocking socket functions not working on Windows with QTcpSocket [1]. Not working as in fundamentally broken and a bug report [1] dating back to early 2012, when Qt 4.8 was new. After a quick look through the relevant Qt source code (native socket engine and kin) in an attempt to determine whether it was something I could reasonably fix myself, I determined that this was not a realistic option due to the amount of work involved.

Instead I found myself drawn to the option of implementing a QObject-based class wrapping around the native sockets on Windows (Winsock2) and others (POSIX/Berkeley). Having used these native sockets before, I could only think of how easy it’d be to write such a wrapper class for my needs. These needs involved TCP sockets, blocking functions and client-side functionality, all of which take only a little bit of effort to implement. Any further features could be implemented on an as-needed basis. The result of this is the NNetworkSocket class, which I put on Github today [2] in a slightly expanded version.

As I suspect that it won’t be the first add-on/drop-in/something else class I’ll be writing to complement the Qt framework, I decided to come up with the so very creative name of ‘Nt’ for the project. Much like ‘Qt’, its pronunciation is obvious and silly: ‘Qt’ as ‘cute’ and ‘Nt’ as ‘neat’. Feel free to have a look at the code I put online including the sample application (samples/NNetworkSocket_sample). Documentation will follow at some point once the class has matured some more.

As usual, feel free to provide feedback, patches and donations 🙂

Maya

[1] https://bugreports.qt-project.org/browse/QTBUG-24451
[2] https://github.com/MayaPosch/Nt