Possible leak from NSURLConnection sendSynchronousRequest on iPhone

Subject: Possible leak from NSURLConnection sendSynchronousRequest on iPhone
From: Ladd Van Tol <email@hidden>
Date: Mon, 10 Nov 2008 14:27:21 -0800
Delivered-to: email@hidden
Delivered-to: email@hidden

So I have an iPhone app that makes a number of threaded calls to - [NSURLConnection sendSynchronousRequest:returningResponse:error:]. When I run the app on the device with the Leaks instrument, I get a periodic 3.5KB leak. So far I haven't been able to tie this leak back to any specific network calls on my part, owing to the async nature of the CF networking stuff.

Instruments reports the attached stack trace.

Any thoughts? Is this a real leak?

Thanks,

	Ladd

33 libSystem.B.dylib 17.50 Kb malloc 32 libSystem.B.dylib 17.50 Kb pthread_create 31 libSystem.B.dylib 10.50 Kb si_async_call 30 libSystem.B.dylib 10.50 Kb getaddrinfo_async_call 29 libSystem.B.dylib 10.50 Kb getaddrinfo_async_start 28 CFNetwork 10.50 Kb _CreateMasterAddressLookup 27 CFNetwork 10.50 Kb CFHostStartInfoResolution 26 CFNetwork 10.50 Kb CFHostStartInfoResolution 25 CFNetwork 10.50 Kb _ScheduleAndStartLookup 24 CFNetwork 10.50 Kb _SocketStreamStartLookupForOpen_NoLock 23 CFNetwork 10.50 Kb _SocketStreamOpen 22 CoreFoundation 10.50 Kb _CFStreamOpen 21 CoreFoundation 10.50 Kb CFWriteStreamOpen 20 CFNetwork 10.50 Kb httpWrFilterOpen 19 CoreFoundation 10.50 Kb _CFStreamOpen 18 CoreFoundation 10.50 Kb CFWriteStreamOpen 17 CFNetwork 10.50 Kb scheduleNewRequest 16 CFNetwork 10.50 Kb _CFNetConnectionEnqueue_internal 15 CFNetwork 10.50 Kb _CFNetConnectionEnqueue 14 CFNetwork 10.50 Kb httpStreamOpen 13 CoreFoundation 10.50 Kb _CFStreamOpen 12 CoreFoundation 10.50 Kb CFReadStreamOpen 11 CFNetwork 10.50 Kb createAndOpenStream 10 CFNetwork 10.50 Kb httpProtocolStart 9 CFNetwork 10.50 Kb CFURLProtocolStartLoad 8 CFNetwork 10.50 Kb _CFURLConnectionProcessServerEvents 7 CFNetwork 10.50 Kb muxerSourcePerform 6 CoreFoundation 10.50 Kb CFRunLoopRunSpecific 5 CoreFoundation 10.50 Kb CFRunLoopRunInMode 4 Foundation 10.50 Kb + [NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] 3 Foundation 10.50 Kb -[NSThread main] 2 Foundation 10.50 Kb __NSThread__main__ 1 libSystem.B.dylib 10.50 Kb _pthread_body

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