It looks like some resource is not being cleaned up as running multiple pings results in a crash.  Here is a ViewController file that will reproduce the crash. [ViewController.swift.zip](https://github.com/OliverLetterer/SPLPing/files/480839/ViewController.swift.zip)
It looks like some resource is not being cleaned up as running multiple pings results in a crash.
Here is a ViewController file that will reproduce the crash.
ViewController.swift.zip