Yeah, sure. when I get something to show I will put it here.

Meanwhile here is example of how simple script using Perl IPC to read from external program may hangs : 


$ cat test.pl

my $cmd = '/usr/sbin/sshuttle -v -D -r  vagrant@127.0.0.1 192.168.0.0/24';

open(OUT, "$cmd 2>&1 |") || die "can't fork: $!";

while (my $l = <OUT>) {
  print $l;
}

When I run test.pl it hangs: 

$ perl test.pl
Starting sshuttle proxy.
Listening on ('127.0.0.1', 12300).
c : connecting to server...
vagrant@127.0.0.1's password:
c : connected.
Connected.

...

^C # I have to enter control C to finish my script

When run the same command directly, it does not hang: 


$ /usr/sbin/sshuttle -v -D -r  vagrant@127.0.0.1 192.168.0.0/24
Starting sshuttle proxy.
Listening on ('127.0.0.1', 12300).
c : connecting to server...
vagrant@127.0.0.1's password:
c : connected.
Connected.
$ # finishes without interruption ..

Sshutle information could be found here - https://github.com/apenwarr/sshuttle
But I provide it only __as example__. Probably other command will cause the same Perl/IPC behavior. Any ideas why?


And yeah , with Capture::Tiny sshutle does not hang ...

In reply to Re^4: Capture::Tiny alternative by melezhik
in thread Capture::Tiny alternative by melezhik

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