NSURLConnection+Swizzled

Category used to "log curl command line prompts for debugging purposes". This category was inspired on NSMutableURLRequest+MKCurlAdditions from Mugunth Kumar, you can find it here. It will also print the stacktrace so you can understand from where the calls are coming from.

This is useful to understand what kind of calls, and how, for example, your urls are being created.

Don't forget to disable it in production code. This is only for debugging

Requirements

Include the library:

• libobjc.dylib

And import the category where you want to use it:

• #import "NSURLConnection+Swizzled.h"

Adding NSURLConnection+Swizzled to your project

Just add the two files inside your project (NSURLConnection+Swizzled.h and NSURLConnection+Swizzled.m).

Usage

Before making a remote connection you can call SWIZZ_IT and after you are done with it UN_SWIZZ_IT. For example:

SWIZZ_IT
[NSURLConnection sendAsynchronousRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"www.google.com"]] queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *as, NSData *a, NSError *ads)
{
   NSLog(@"blah blah");
}];

UN_SWIZZ_IT

This will output:

2013-07-27 01:33:24.366 Testing[12197:c07] ------------------------------  Stack trace  ---------------------------------------
2013-07-27 01:33:24.369 Testing[12197:c07] 0 Testing +[NSURLConnection(Swizzled) outputStackTrace] + 71
2013-07-27 01:33:24.370 Testing[12197:c07] 1 Testing +[NSURLConnection(Swizzled) operateRequest:] + 69
2013-07-27 01:33:24.370 Testing[12197:c07] 2 Testing +[NSURLConnection(Swizzled) swizzSendAsynchronousRequest:queue:completionHandler:] + 132
2013-07-27 01:33:24.371 Testing[12197:c07] 3 Testing -[APViewController viewDidLoad] + 296
2013-07-27 01:33:24.371 Testing[12197:c07] 4 UIKit -[UIViewController loadViewIfRequired] + 536
2013-07-27 01:33:24.371 Testing[12197:c07] 5 UIKit -[UIViewController view] + 33
2013-07-27 01:33:24.372 Testing[12197:c07] 6 UIKit -[UIWindow addRootViewControllerViewIfPossible] + 66
2013-07-27 01:33:24.372 Testing[12197:c07] 7 UIKit -[UIWindow _setHidden:forced:] + 368
2013-07-27 01:33:24.373 Testing[12197:c07] 8 UIKit -[UIWindow _orderFrontWithoutMakingKey] + 49
2013-07-27 01:33:24.373 Testing[12197:c07] 9 UIKit -[UIWindowAccessibility(SafeCategory) _orderFrontWithoutMakingKey] + 77
2013-07-27 01:33:24.374 Testing[12197:c07] 10 UIKit -[UIWindow makeKeyAndVisible] + 65
2013-07-27 01:33:24.374 Testing[12197:c07] 11 Testing -[APAppDelegate application:didFinishLaunchingWithOptions:] + 661
2013-07-27 01:33:24.375 Testing[12197:c07] 12 UIKit -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 266
2013-07-27 01:33:24.375 Testing[12197:c07] 13 UIKit -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] + 1248
2013-07-27 01:33:24.375 Testing[12197:c07] 14 UIKit -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 805
2013-07-27 01:33:24.376 Testing[12197:c07] 15 UIKit -[UIApplication handleEvent:withNewEvent:] + 1022
2013-07-27 01:33:24.376 Testing[12197:c07] 16 UIKit -[UIApplication sendEvent:] + 85
2013-07-27 01:33:24.377 Testing[12197:c07] 17 UIKit _UIApplicationHandleEvent + 9874
2013-07-27 01:33:24.377 Testing[12197:c07] 18 GraphicsServices _PurpleEventCallback + 339
2013-07-27 01:33:24.378 Testing[12197:c07] 19 GraphicsServices PurpleEventCallback + 46
2013-07-27 01:33:24.378 Testing[12197:c07] 20 CoreFoundation __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 53
2013-07-27 01:33:24.379 Testing[12197:c07] 21 CoreFoundation __CFRunLoopDoSource1 + 146
2013-07-27 01:33:24.379 Testing[12197:c07] 22 CoreFoundation __CFRunLoopRun + 2118
2013-07-27 01:33:24.380 Testing[12197:c07] 23 CoreFoundation CFRunLoopRunSpecific + 276
2013-07-27 01:33:24.380 Testing[12197:c07] 24 CoreFoundation CFRunLoopRunInMode + 123
2013-07-27 01:33:24.381 Testing[12197:c07] 25 UIKit -[UIApplication _run] + 774
2013-07-27 01:33:24.381 Testing[12197:c07] 26 UIKit UIApplicationMain + 1211
2013-07-27 01:33:24.382 Testing[12197:c07] 27 Testing main + 141
2013-07-27 01:33:24.382 Testing[12197:c07] 28 Testing start + 53
2013-07-27 01:33:24.383 Testing[12197:c07] ----------------------------------------------------------------------------
2013-07-27 01:33:24.384 Testing[12197:c07] Saturday, July 27, 2013, 1:33:24 AM Western European Summer Time
Request
-------
curl -X GET 'www.google.com'

if you are not happy with the stack trace just don't use it: STOP_STACKTRACE_SWIZZ.

If you want to keep receiving information during the whole application just SWIZZ_IT on your applicationDidFinishLaunching and don't use UN_SWIZZ_IT.

License

This code is distributed under the terms and conditions of the MIT license.