iOS Simulator Crash when use IsReachable when try connect an IP does not exist on Network

[SyaoranChang]

Bug Information

Version Number of Plugin: 4.0.0.190-beta
Device Tested On:
Simulator Tested On: iPhone X - 11.3
Version of VS: 15.6.7
Version of Xamarin: 4.9.0.753
Versions of other things you are using:

Steps to reproduce the Behavior

IsReachable Crash when try connect an IP does not exist on Network

Test connect to Local Area Network.
The ip does not exist on Network.
IP:192.168.1.100
Port:80

var isReachable = await CrossConnectivity.Current.IsReachable(192.168.1.100, 80);
Crash after run this code.

Expected Behavior

Actual Behavior

Code snippet

Screenshots

[SyaoranChang]

Version Number of Plugin: 4.0.0.190-beta

I change to use IsRemoteReachable
Task IsRemoteReachable(Uri uri, TimeSpan timeout);

seems result is OK
iOS Simulator
iPhone X - 11.3 IsRemoteReachable OK

Genymotion android simulator
Samsung Galaxy S8 7.0.0 IsRemoteReachable OK

Real Devices
OPPO R15 - 8.1.0 IsRemoteReachable OK