Can I use websockets on a VPS?

[Krik]

My current host will not allow websocket use, and I as they don't provide any VPS's, I am now in the market.

Can I put a socket listening script on a VPS? I am assuming I would be able to use whatever programming language I liked (PHP, Perl, Ruby, Python, C++, ect.).

Would a VPS give me access to multiple sockets if needed?

Is there any limit on the number of concurrent connections to a socket?

Is there any limit on the number of processes (threads) I can run at one time on a VPS?

I would be doing a fair amount of testing for the next several months. Can I accomplish setting up a website and a websocket server, for pre-production testing, using the "Level 1" VPS Plan or do I need to go with one of the cPanel enable plans right away?

Also, as side thought, do any of your shared hosting plans support the use of websockets? Would be just for per-production testing, to try and save some money, up front.

[Krik]

EDIT: Looks like in my haste I made a mistake. In questions 2 and 3 I meant ports, not sockets.

[alemcherry]

You have complete control over a VPS, just like a dedicated server. Your account is limited by the CPU / RAM / Storage and not by individual processes or anything.

If you are comfortable with Linux and just want to test things, even Level I should be good enough. You need to upgrade only when you want to go live / want the ease of cPanel.