I've been hunting down a problem using POCO and websocket client for 3 days now and finally managed to fix it.
The default HTTP request version is 1.0 and the RFC specs requires 1.1.
The websocket client wouldn't connect to a C# websocket client using fleck library for that reason.
See Details description of the problem and solution here: http://stackoverflow.com/questions/2018 ... ket-server
Also, please update the samples, test and documentation to highlight this.