"javascript/html5" can do everything flash could in the same sense that brainfuck is a turing complete language just like C or (your preferred language here).

@wyatt
"HTML5 can do everything flash could do!"

Okay so; i want to open a raw TCP socket connection to my server, here is a flash-based client that is able to do that; please make this work in html5/javascript,

And no i cannot change how the server works it needs to work the same with both;

*HTML5 left the game