Sorry B50D, i didn't answer you !!
You are right, there is not network connection in the screenshot, but the
icon changed the status from disconnected to connected. The following C
program should solve this issue:
#include
#include
#include
void ping(){
system("ping 8.8.8.8");
}
void status(){
system("scan_connection");
}
int main() {
pthread_t thd1, thd2;
pthread_create (&thd1, NULL, (void*)ping, NULL);
pthread_create (&thd2, NULL, (void*)status, NULL);
pthread_join(thd1, NULL);
pthread_join(thd2, NULL);
}
Being "scan_connection" the following script:
#!/bin/sh
sleep 1
var=$(ps -e | grep ping 2>&1)
pkill ping
if test -z "$var"; then
echo DISCONNECTED
else echo CONNECTED
fi
exit 0
This C program is multithreaded. You can build it by the following way:
$ gcc main.c -o main -lpthread
It runs "ping 8.8.8.8", and the "scan_connection" script at the same time in
separete threads. The "scan_connection" will wait 1 second before finding out
if the ping process is running or not (after that, ping is killed).
If there is no network connection "ping 8.8.8.8" will return "connect:
Network is unreachable", and the ping process will be aborted within this
second of waiting. So, the "var" variable will be null in this case.
Here you are the output in both cases:
CASE 1:
root@devuan:/home/aitor# ./main
connect: Network is unreachable
DISCONNECTED
CASE 2:
root@devuan:/home/aitor# ./main
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=54 time=34.7 ms
Terminated
CONNECTED
Cheers, and thanks for reporting the bug :)
Aitor.
