cocos2dx httpClient ios 闪退

Thread 1 name: Dispatch queue: com.apple.CFNetwork.Connection
Thread 1 Crashed:
0 libsystem_kernel.dylib 0x1dd60ad4 __pthread_kill + 8
1 libsystem_pthread.dylib 0x1de1718a pthread_kill + 62
2 libsystem_c.dylib 0x1dcf4338 abort + 108
3 libc++abi.dylib 0x1d7f8568 __cxa_bad_cast + 0
4 libc++abi.dylib 0x1d81250e default_unexpected_handler+ 111886 () + 0
5 libobjc.A.dylib 0x1d81b304 _objc_terminate+ 29444 () + 192
6 libc++abi.dylib 0x1d80f93e std::__terminate(void ()+ 100670 ()) + 78
7 libc++abi.dylib 0x1d80f14e __cxxabiv1::exception_cleanup_func+ 98638 (_Unwind_Reason_Code, _Unwind_Exception
) + 0
8 libobjc.A.dylib 0x1d81b148 _objc_exception_destructor+ 29000 (void*) + 0
9 CoreFoundation 0x1e5be504 __methodDescriptionForSelector + 0
10 CoreFoundation 0x1e5bc578 forwarding + 700
11 CoreFoundation 0x1e4e13d8 _CF_forwarding_prep_0 + 24
12 CoreFoundation 0x1e4e62f4 CFURLCreateStringByAddingPercentEscapes + 56
13 CFNetwork 0x1eb6239e appendEscapedFormat+ 529310 (__CFString*, __CFString const*, __CFString const*) + 58
14 CFNetwork 0x1eb62088 initializeUserAgentString+ 528520 () + 258
15 libsystem_pthread.dylib 0x1de172ec __pthread_once_handler + 50
16 libsystem_platform.dylib 0x1de0d4bc _os_once + 34
17 libsystem_pthread.dylib 0x1de148e0 pthread_once + 50
18 CFNetwork 0x1eb61a76 cleanUpRequest+ 526966 (__CFHTTPMessage*, long long, unsigned char, unsigned char) + 104
19 CFNetwork 0x1ec96a00 HTTPTransaction::_onqueue_prepareRequest+ 1792512 (bool, bool) + 54
20 CFNetwork 0x1ec96ac0 HTTPTransaction::getPreparedRequest+ 1792704 (bool, bool) + 24
21 CFNetwork 0x1ec45af4 HTTPConnection::_onqueue_requestStart+ 1460980 () + 188
22 libdispatch.dylib 0x1dc5e096 _dispatch_call_block_and_release + 10
23 libdispatch.dylib 0x1dc6ae5c _dispatch_queue_serial_drain + 840
24 libdispatch.dylib 0x1dc61378 _dispatch_queue_invoke + 566
25 libdispatch.dylib 0x1dc6ca5c _dispatch_root_queue_drain + 378
26 libdispatch.dylib 0x1dc6c882 _dispatch_worker_thread3 + 106
27 libsystem_pthread.dylib 0x1de13936 _pthread_wqthread + 1168
28 libsystem_pthread.dylib 0x1de13490 start_wqthread + 8