crash HTTP DNS

[CorkiiOS]

Crashed: com.scheduleCenterResultQueue.httpdns
0 libobjc.A.dylib 0x19b614ed0 objc_retain + 16
1 CoreFoundation 0x18661bcf0 __NSSingleObjectArrayI_new + 88
2 CoreFoundation 0x1864bc2b0 -[NSArray initWithArray:range:copyItems:] + 416
3 CoreFoundation 0x1864bf748 +[NSArray arrayWithArray:] + 76
4 Vostic 0x103a79b70 __31-[HttpdnsScheduleCenter IPList]_block_invoke + 365 (HttpdnsScheduleCenter.m:365)
5 libdispatch.dylib 0x1861d1db0 _dispatch_client_callout + 20
6 libdispatch.dylib 0x1861e0428 _dispatch_lane_barrier_sync_invoke_and_complete + 60
7 Vostic 0x103a79a84 -[HttpdnsScheduleCenter IPList] + 362 (HttpdnsScheduleCenter.m:362)
8 Vostic 0x103a79bc0 -[HttpdnsScheduleCenter getActivatedServerIPWithIndex:] + 372 (HttpdnsScheduleCenter.m:372)
9 Vostic 0x103a95238 -[HttpdnsRequest constructRequestURLWith:activatedServerIPIndex:] + 235 (HttpdnsRequest.m:235)
10 Vostic 0x103a95b50 -[HttpdnsRequest lookupHostFromServer:error:activatedServerIPIndex:] + 321 (HttpdnsRequest.m:321)
11 Vostic 0x103a89dac __96-[HttpdnsRequestScheduler executeRequest:synchronously:retryCount:activatedServerIPIndex:error:]_block_invoke.299 + 497 (HttpdnsRequestScheduler.m:497)
12 Foundation 0x18792c850 NSBLOCKOPERATION_IS_CALLING_OUT_TO_A_BLOCK + 24
13 Foundation 0x187819740 -[NSBlockOperation main] + 104
14 Foundation 0x18792eca4 NSOPERATION_IS_INVOKING_MAIN + 24
15 Foundation 0x1878193c8 -[NSOperation start] + 808
16 Foundation 0x18792f74c NSOPERATIONQUEUE_IS_STARTING_AN_OPERATION + 24
17 Foundation 0x18792f1d4 __NSOQSchedule_f + 184
18 libdispatch.dylib 0x1861dffb8 _dispatch_block_async_invoke2 + 148
19 libdispatch.dylib 0x1861d1db0 _dispatch_client_callout + 20
20 libdispatch.dylib 0x1861d512c _dispatch_continuation_pop + 416
21 libdispatch.dylib 0x1861d4854 _dispatch_async_redirect_invoke + 592
22 libdispatch.dylib 0x1861e293c _dispatch_root_queue_drain + 356
23 libdispatch.dylib 0x1861e3120 _dispatch_worker_thread2 + 116
24 libsystem_pthread.dylib 0x1d20897d8 _pthread_wqthread + 216
25 libsystem_pthread.dylib 0x1d209076c start_wqthread + 8

[CorkiiOS]

多线程操作数据，导致的问题吧，有人帮忙看下吗