在stopSocket方法中crash，CFSocketInvalidate

[yx-mike]

#0 Thread
0 libsystem_platform.dylib 0x000000022032b0c8 __os_unfair_lock_recursive_abort + 36
1 libsystem_platform.dylib 0x00000002203282d8 __os_unfair_lock_lock_slow + 308
2 CoreFoundation 0x0000000199130924 _CFSocketInvalidate + 136
3 CFNetwork 0x000000019a694aa0 Schedulables::_SchedulablesInvalidateApplierFunction(void const*, void*) + 36
4 CoreFoundation 0x000000019906b2cc _CFArrayApplyFunction + 72
5 CFNetwork 0x000000019a682870 SocketStream::~SocketStream() + 456
6 CoreFoundation 0x000000019901908c __CFRelease + 292
7 CoreFoundation 0x0000000199130c5c _CFSocketInvalidate + 960
8 WDBuyerUniv 0x0000000100e83fa8 -PingFoundation stopSocket
9 WDBuyerUniv 0x0000000100e83fe4 -PingFoundation stop
10 WDBuyerUniv 0x0000000100e84434 -PingHelper clearPingFoundation
11 WDBuyerUniv 0x0000000100e84934 -PingHelper pingTimeOut
12 Foundation 0x0000000197ce98d0 ___NSFireDelayedPerform + 372
13 CoreFoundation 0x00000001990c73f8 _CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION + 32
14 CoreFoundation 0x00000001990c709c ___CFRunLoopDoTimer + 1012
15 CoreFoundation 0x00000001990c6bf0 ___CFRunLoopDoTimers + 288
16 CoreFoundation 0x00000001990650fc ___CFRunLoopRun + 1856
17 CoreFoundation 0x00000001990645b8 _CFRunLoopRunSpecific + 572
18 GraphicsServices 0x00000001e4afa1c4 _GSEventRunModal + 164
19 UIKitCore 0x000000019bbba5f0 -[UIApplication _run] + 816
20 UIKitCore 0x000000019bc6910c _UIApplicationMain + 340
21 ??? 0x00000001be837d34 0x00000001be837d34 + 0

怎么说，好像目前没有完全解决这类问题的方法。
有没有准备替换Ping的实现?

[yx-mike]

https://forums.developer.apple.com/forums/thread/724595

https://medium.com/@onlyapps/measure-pings-to-any-host-using-network-framework-ios-swift-3092ef367cd6