Re^2: IPC::Open3 not connecting network socket handle

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Re^3: IPC::Open3 not connecting network socket handle by ikegami (Patriarch) on Jul 24, 2009 at 15:49 UTC
IPC::Open3 is already closing it for you. Just remove the `close`.	[reply] [d/l]
Re^4: IPC::Open3 not connecting network socket handle by Anonymous Monk on Jul 24, 2009 at 17:01 UTC
I don't think it is - it seems like my script is actually dying at the open3 step, while the child lives on (at least under 5.8.4). I'm dropped back to a shell prompt , even though my telnet session is still open in the other window and cat is still printing the text to my terminal. I removed the redundant `close` to no effect, it doesn't seem that the script had been getting that far. `#!/usr/bin/perl use warnings; use strict; use IO::Socket; use IPC::Open3; my $sock = new IO::Socket::INET ( LocalHost => '127.0.0.1', LocalPort => '1818', Proto => 'tcp', Listen => 1, ReuseAddr => 1, Timeout => 20 ); die "Could not create socket: $!\n" unless $sock; our $new_sock = $sock->accept() or die "No one came!"; my $pid = open3( "<&" . fileno($new_sock), ">&STDOUT", ">&STDERR", "/b +in/cat" ); waitpid( $pid, 0 );` [download] Here is the result: `sh-3.2# ./test.pl open3: close(5) failed: Bad file number at ./test.pl line 21 sh-3.2# ps -ef \| grep /bin/cat root 6124 6106 1 12:57:29 pts/3 0:00 grep /bin/cat root 6122 1 1 12:57:21 pts/3 0:00 /bin/cat sh-3.2# Blah blah this is text coming from my telnet session` [download]	[reply] [d/l] [select]
Re^5: IPC::Open3 not connecting network socket handle by ikegami (Patriarch) on Jul 24, 2009 at 17:16 UTC
I don't think it is `# If the write handle is a dup give it away entirely, close my copy # of it. xclose $dad_wtr if $dup_wtr;` [download] it seems like my script is actually dying at the open3 step Oops, yeah, I knew that. So it's an unrelated problem. Let's find out more details: `$ perl -MCarp=verbose a.pl open3: close(4) failed: Bad file descriptor at /usr/share/perl/5.8/IPC +/Open3.pm line 70 IPC::Open3::xclose(4) called at /usr/share/perl/5.8/IPC/Open3. +pm line 218 IPC::Open3::_open3('open3', 'main', '<&4', '>&STDOUT', '>&STDE +RR', '/bin/cat') called at /usr/share/perl/5.8/IPC/Open3.pm line 229 IPC::Open3::open3('<&4', '>&STDOUT', '>&STDERR', '/bin/cat') c +alled at a.pl line 21` [download] Doh! It's calling `close("4")`! `xclose $dad_wtr if $dup_wtr;` [download] should be `if ($dup_wtr) { if (fh_is_fd($dad_wtr)) { xclose $dad_wtr; } else { xfdclose xfileno($dad_wtr); } }` [download] Defining `xfdclose` is left as a task to the reader.	[reply] [d/l] [select]