Is there a way of checking bandwidth usage?

[Spryz]

Im not sure if this is possible without 3rd party software but i hope it is, is there any way to check how much of a users internet connection is being used?

My application relies heavily upon an internet connection for register/login, a chatroom, a built in radio station tuner (for players who like to turn off game sounds and listen to music), and a few multiplayer games all in the single application, and i would like a message to be displayed if something is taking up quite a bit of there internet speed.

Edit: Also is there a way to allocate a certain amount of a users connection speed for these activities in my application?

Any help is greatly appreciated, this is my first big project and i would like to have it finnished soon.

[Looki]

Well, I'm not sure if this would be accurate, but you could monitor the sizes of the packets received and sent, if you're using mooclick for everything, but I doubt you do.

[Spryz]

Is there any other way of doing this? there must be a way as other applications can seem to do this