EasyRTC demos require Socket.io version 0.9.16

[richardblakely]

Please note, in order for the easyRTC samples to run properly you must install socket.io version 0.9.16 (see thread https://github.com/priologic/easyrtc/issues/184). Newer versions of socket.io may throw a server error when your users attempt to connect to the demo applications.

[alangibson]

+1 for upgrading to a more recent version of socket.io. I just had a situation where I was getting warnings

warn - unknown transport: "undefined"

when I tried to connect with socket.io-client 1.4.8.

Workaround is

1. Change socket.io version to 1.4.x in package.json
2. npm update
3. In easyrtc_default_options.js, replace
   option.easyrtcidRegExp = /^[a-z0-9_.-]{1,32}$/i; // EasyRTC socket id (easyrtcid)
   with
   option.easyrtcidRegExp = /^\/{1}#{1}[a-z0-9_.-]{1,32}$/i;

(credit: https://easyrtc.com/forums/viewthread/169/#170)