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!

This can be mybe done in loop, but how to check internet connection? — user1262876, Mar 11 '12 at 22:03

score 3 · Answer 1 · answered Mar 11 '12 at 22:26

3

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

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

answered Mar 11 '12 at 22:26

SecurityMatt

This is a very good answer, but how can i get the return of the result? should i use pipe ...or? any example please.. – user1262876 Mar 11 '12 at 22:29
If you're in C++ you should be able to connect to the stdout of the process, which will return a line of text every time a ping succeeds. – SecurityMatt Mar 11 '12 at 23:38
There was some statistic that google is used by majority of people to check whether internet connection is up or not rather than actual search :) – user138645 Mar 13 '12 at 06:00
Note that many schools and businesses block ping packets. Also, if google goes out of business or renames itself, this may fail in future. – DavidJ Sep 20 '17 at 21:46

score 1 · Answer 2 · edited May 23 '17 at 12:29

1

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

edited May 23 '17 at 12:29

Community

answered Mar 11 '12 at 23:40

torrential coding

2 Answers2