Is there any way to check Internet Connection on Linux Ubuntu? Because this one is only for Windows-- programmatically check whether my machine has internet access or not
Or Using Poco libraries.
Asked
Active
Viewed 5,748 times
2
-
1What was wrong with [this solution](https://stackoverflow.com/a/15778448/366904), given in the same question? Use the sockets library to connect to a known address. – Cody Gray - on strike Jun 05 '17 at 11:04
-
@CodyGray How can we implement it? – Jasurbek Nabijonov Jun 05 '17 at 11:29
-
Using the sockets library, like I already said. I guess this was really a "give-me-teh-codez" question. – Cody Gray - on strike Jun 05 '17 at 12:10
-
Okay. Thank you! I found right answer. – Jasurbek Nabijonov Jun 05 '17 at 13:23
1 Answers
0
You can use route command in Linux to check
FILE *output;
if(!(output = popen("/sbin/route -n | grep -c '^0\\.0\\.0\\.0'","r")))
{
return 1;
}
unsigned int i;
fscanf(output,"%u",&i);
if(i == 1)
cerr<<"There is internet connection\n";
else if(i == 0)
cerr<<"There is no internet connection\n";
pclose(output);
You can find more information about it here.
XZ6H
- 1,779
- 19
- 25
-
3It will only give you the information that a default route is set. but if you can reach internet ip addresses will not be guaranteed. therefor you should open a connection to a well known ip address in the internet like 8.8.8.8 / 8.8.8.4 (google DNS server) – 0x0C4 Jun 05 '17 at 11:37