Not sure how many of you are interested in such a thing, but I just finished up a brief tutorial series on using SFML ( C++ ) to talk to a NodeJS highscore server. It covers creating a UDP socket, encoding information in JSON, passing it across the network, taking the highscore data and "doing stuff" with it on the server side, returning it back to the client, decoding it from JSON back into usable data then displaying it. I include a full zip of the project ( Visual Studio 2010 ), so you can simply download and compile if wanted.
Part 1 - Setting up, running a node app, and making a simple network connection Part 2 - JSON encoding your data in C++, passing in a new high score, decoding JSON in Node Part 3 - returning high scores from Node back to the client, decoding JSON in C++. Also, a primitive high score webserver, just because.