Update websockify, fix websocket tests, refactor websocket harness.
- pull in websockify c00c0eed from https://github.com/kanaka/websockify with one-shot socket listener cleanup and other misc updates. - import the WebSocketProxy class directly and launch it one-shot using the run_once parameter rather than spawning a separate websockify via shell. - create a python version of socket_server.sh and in the harness and remove socket_server.sh. - refactor clean_pids to use a two phase cleanup where it sends a SIGTERM (to give the parent the chance to cleanup children) and then send a SIGTERM 1 second later. This still has risk of leaving child processes around (for example, the nc process in the original socket_server.sh which would also hold onto the listen port). Conflicts: tests/runner.py
Fix sscanf white space bug
…ring as the spec says it should
Add test for sscanf