| Subject: | Multi-threaded FTP |
| Date: | Thu, 04 Oct 2007 16:54:12 -0700 |
| To: | <bug-libnet [...] rt.cpan.org> |
| From: | "Beus, Sherman J" <Sherman.Beus [...] pnl.gov> |
Hello,
First of all, here is some brief configuration info:
Perl 5.8.8
libnet (whatever comes with 5.8.8)
Server SunOS 5.10 Generic_125100-07 sun4u sparc SUNW,Sun-Fire-V240
Using Net::FTP in a multi-threaded setting causes sporadic uncaught FTP
errors. For example, small test files being sent from two concurrent
threads are merged on destination host. The error is reproducible, but not
on a consistent basis - usually within 3-4 runs of our test program, which
has 32 threads jointly sending 320 10-byte files. We cannot reproduce the
error when running our application in non-threaded mode.
This post might be describing the same problem we are seeing:
http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2005-10/msg00865.html
We also occasionally encounter these fatal error messages only when running
in threaded mode:
thread failed to start: Can't call method "sockport" on an undefined value
at perl5.8.8/lib/5.8.8/Net/FTP.pm line 837
thread failed to start: Can't locate object method "new" via package
"Net::FTP::I" at perl5.8.8/lib/5.8.8/sun4-solaris-thread-multi/IO/Socket.pm
line 168
We are extremely interested in resolving this problem as our application is
mission critical and requires the use of threading.
Many thanks in advance,
Sherman Beus