Check internet connection or check internet connection constantly

Question

How can i check internet connection in c++ or c, i'm using mac & cant find a good way. If

possible i want to check internet connection constantly' so i can save the users data.

Please provide me with examples, information and ideas.

THanks!

Answer 1

Call system("ping www.google.com").

If the process dies or becomes slow, then your internet connection is doing badly.

Answer 2

You can try implementing a lightweight ICMP to ping a remote host periodically.

Maybe this question can shed some light: Mac network ping source code compile error