Is the computer online?

Check if the computer is online. It does three tries:

• Retrieve Apple's Captive Portal test page, see apple_captive_test().

• Queries myip.opendns.com on OpenDNS, see my_ip().

• Retrieves icanhazip.com via HTTPS, see my_ip(). If any of these are successful, it returns TRUE.

Usage

is_online(timeout = 1)

Arguments

timeout

Timeout for the queries. (Note: it is currently not used for the DNS query.)

Value

Possible values:

• TRUE Yes, online.

• FALSE No, not online.

Examples

is_online()
#> [1] TRUE