https://java.net/jira/browse/JSIP-432 Exhaust the buffers until empty to avoid lagging on slow traffic

git-svn-id: https://svn.java.net/svn/jsip~svn/trunk@2291 8e71dc83-d81e-6649-80f2-80b843a9b2be
https://java.net/jira/browse/JSIP-432

Add websocket example app - b2bua server.

git-svn-id: https://svn.java.net/svn/jsip~svn/trunk@2292 8e71dc83-d81e-6649-80f2-80b843a9b2be
Fixes Issue 122

JSIP repo https://java.net/jira/browse/JSIP-456

git-svn-id: https://svn.java.net/svn/jsip~svn/trunk@2294 8e71dc83-d81e-6649-80f2-80b843a9b2be