There are 2 code downloads;
- EchoProject.zip the code developed during the session
- CleanStockTicker.zip which is the code for the stockticker demo. This is missing coherence.jar and the HighCharts library which can be downloaded by clicking on the links.
As an aside. People say that support of WebSockets over current networks could be patchy. Well I've checked the demo on this blog is working over 3G, Hotel WLAN, Conference WLAN and Home ADSL and it's never failed and given that it is hosted on Amazon EC2 (whose network topology I suspect is far from simple) I think this stuff works (Also it is using plain ws:// not tunnelled over TLS/SSL via wss:// which is supposed to be better supported).