Wrestled with out-of-date Apple bluetooth examples in C and ObjC; got their RFCOMM chat client half working (send, no receive?) after winding through many lines of code and commenting out some of the discovery stuff; found LightBlue, 5 lines of code to do the same thing interactively from the shell, wound it into a script, voila. .5hr vs 2 days. Thanks for this. I'm using your library to run tests on my own embedded bluetooth device, and it'll be trivial to script unit tests with this.