Ben Kochie 8e89829cd5 Don't resolve when creating Pinger (#65) ...

Move the DNS resolver out of the NewPinger() function in order to allow
adjusting of IPv4 vs IPv6 DNS resolution before running. This also
allows the user to verify resolution.
* Create new `New()` method that returns a bare default struct.
* Create new `Resolve()` method.
* Call `Resolve()` from `SetAddr()`.
* Call `Resolve()` automatically from `Run()`.
* Remove unecessary private `run()` method.

Update ping command for simplifed return values of `NewPinger()`.

Signed-off-by: Ben Kochie <superq@gmail.com>

2020-09-14 07:41:27 +02:00

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