[Dxspider-support] Node hangs

Mike McCarthy, W1NR lists at w1nr.net
Mon Jan 8 01:37:34 CET 2007

Sounds like a bugzilla to the perl developers is in order...

Mike, W1NR

-----Original Message-----
From: dxspider-support-bounces at dxcluster.org
[mailto:dxspider-support-bounces at dxcluster.org] On Behalf Of Dirk Koopman
Sent: Sunday, January 07, 2007 6:32 PM
To: The DXSpider Support list
Subject: [Dxspider-support] Node hangs

Well, it finally happened to me (just now) whilst I was watching for
something else. I can confirm that is caused by an output queue on a
connection filling up and the code hangs in the perl IO subsystem until it
finally times out (usually after 20 minutes). I imagine this is, in turn,
caused by some ISP simply losing IP packets for dynamic addressed
connections that have either just dropped or had their IP address forcibly

I have made some changes which may help; basically, if you are using a perl
that is modern enough [>=5.6.1?] blocking is implemented by internal perl
and not some perl POSIX compatible code that may or (it now seems likely)
may not work.  

Dirk G1TLH

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