Logical, whether to keep pinging until
the user interrupts.
verbose
Whether to print progress on the screen while
pinging.
count
Number of pings to perform.
timeout
Timeout, in seconds. How long to wait for a
ping to succeed.
fail_on_dns_error
If TRUE then is_up() fails if the DNS
resolution fails. Otherwise it will return FALSE.
check_online
Whether to check first if the computer is online.
Otherwise it is possible that the computer is behind a proxy, that
hijacks the HTTP connection to destination.
Value
Vector of response times, in milliseconds.
NA means no response within the timeout.