Asynchronous NSURLConnection with NSOperation

Question

I want to do NSURLConnection in background mode,because it response is having much data.Forums are telling to use Apple\'s finite length coding to use in

Answer 1

This kind of question was asked a zillion time. Delegates are not getting called because as of iOS 4 operations are started on a secondary thread. The thread probably exits before the delegates are called that's all.

Keep the connection on the main thread and handle the data in a background thread using GCD.

I'v wrote about all this stuff here : http://cocoaintheshell.com/2011/04/nsurlconnection-synchronous-asynchronous/

EDIT : Updated link.

Answer 2

Look at the sendAsynchronousRequest:queue:completionHandler: method documented here in Apple's Documentation. It allows asynchronous requests with NSURLConnection.

Note this requires iOS5 or higher

Answer 3

Apple provides QHTTPOperation, which does just what you want, encapsulates an NSURLConnection within an NSOperation, for a single request. You can find it in Apple's sample code.

QHTTPOperation is actually a subclass of QRunLoopOperation which lets you encapsulate logic which depends on run-loop callbacks in an NSOperation.

The 3rd party ASIHTTPRequest is a similar popular solution, AFAIK it is no longer maintained though.