CODEWITHSUNDEEP
iosnetwork-programming
goelv
goelv

Reputation: 1039

If NSURLConnection sendAsynchronousRequest fails how do I retry?

I am using the function NSURLConnection sendAsynchronousRequest completionHandler to send async requests using NSURLConnection.

When this fails, how do I retry the same request? What are the best practices around this?

Upvotes: 0

Views: 171

Answers (1)

ok404
ok404

Reputation: 352

When you call the sendAsynchronousRequestyou can and should pass a completion handler block to the function. When the request is finished the completion handler gets called with a NSURLResponse,NSData and an NSError object. Just check if the error is nil and you know that your request finished successfully. Take a look at the documentation: https://developer.apple.com/library/ios/documentation/Cocoa/Reference/Foundation/Classes/NSURLConnection_Class/index.html#//apple_ref/occ/clm/NSURLConnection/sendAsynchronousRequest:queue:completionHandler:

However if you are developing for iOS9 you should use NSURLSession to make asynchronous network requests because the method in NSURLConnection is deprecated in iOS9 . Here the link to the class reference of NSURLSession: https://developer.apple.com/library/prerelease/ios/documentation/Foundation/Reference/NSURLSession_class/

Upvotes: 2

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