rejectedsoftware/vibe.d — pull request #947 by lultimouomo (2014-12-31 10:35:51+00:00)
Title: Add automatic ping on websockets

The ping interval is fixed at 60 seconds.
The best thing would probably be to set it in the server settings, thus also allowing to disable it entirely.
For this, the ```WebSocket``` must have access to ```HTTPServerSettings```; the best way would probably be to expose a const reference to ```HTTPServerRequest.m_settings```, which I'm going to do in the next commit of this pull request.