iPhone UDP侦听器

Question

I'm in need of some advice for how to accomplish something.

I'd like my iPhone app to listen for information from my server and then my server will send out data to all listening devices.

A few questions:

1. Will the iDevice need to "register" with the server with its IP? So, then on the server side, I store all listening device IPs in an array and fire out data to each.
2. Is there away for it to simply listen without the initial message?
3. Is UDP the way to go on this? Obviously I don't want a TCP stream because it's a constant connection. Uses too much data. My goal is use the least amount of data possible to receive a small timestamp from a server.

Any suggestions would be appreciated!

Elijah

Answer 1

If you do not want to use Apple Push Notifications, and you don't want to use long polling, I would look into something like websockets .

PHP has a very good implementation for it (I assume PHP is your server side language?) in Ratchet .

EDIT:

Just to elaborate a little, WebSockets will allow you to transmit from the server directly to the apps of every connected user at once, just like you are asking.