Hi Iam fighting with this for the past 48 hours searching all forums with no use. Iam using NSURLConnection asynchronous to download a series of web files, it randomly crashes ( after downloading a few files which is not fixed). Please see the call stack below:
0 0x35b634f4 in objc_msgSend
1 0x3527c2ca in CFEqual
2 0x3532e750 in __CFBasicHashStandardEquateKeys
3 0x35330514 in ___CFBasicHashFindBucket_Linear
4 0x3527c07c in CFBasicHashFindBucket
5 0x3527bf5c in CFDictionaryGetValue
6 0x31d15cb4 in HTTPMessage::copyConstantHeaderFieldValue
7 0x31d6526c in URLRequest::copyConstantHeaderFieldValue
8 0x31d606f8 in HTTPProtocol::getCacheStoragePolicy
9 0x31d62cd0 in HTTPProtocol::updateForHeader
10 0x31d64524 in HTTPProtocol::performHeaderRead
11 0x31d64bf8 in HTTPProtocol::httpReadStreamEvent
12 0x352c4302 in _signalEventSync
13 0x352c427c in _cfstream_shared_signalEventSync
14 0x352ed294 in CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION
15 0x352ef0e2 in __CFRunLoopDoSources0
16 0x352f0058 in __CFRunLoopRun
17 0x352970c2 in CFRunLoopRunSpecific
18 0x35296fd0 in CFRunLoopRunInMode
19 0x30a1f31c in +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:]
20 0x309ef618 in -[NSThread main]
21 0x30a75146 in NSThread__main
After seeing a previous thread on this on stackoverflow it is indeed a problem with redirect requests being sent. The solution suggested there was to implement - (NSURLRequest *)connection:(NSURLConnection *)connection willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *) redirectResponse { return request; } I did that but still the crash is there . Also the behaviour before crash is that , willSendRequest is being called twice and no other delegate method is called for this request. It crashes internally in NSURLResponse.
would really appreciate any pointers Thanks bvk4you