[stunnel-users] too many file descriptors

Sligar, Benjamin bsligar at tnsi.com
Thu Apr 20 22:16:16 CEST 2006

I'm working on upgrading from stunnel 4.04 to the 4.15 to utilize the per port specification of a certificate.  On my initial testing, I ran with only a few ports, specified the different certs, and, everything seems to work fine.  I'm ran into a problem, though, when trying to use the same config file in regards to the number of configured ports.  I have 104 inbound ports setup, and, when it hits the 69th configured port, I get the following message for this, and every port that follows:

s_poll_add failed for FD=69: too many file descriptors

I checked the code, and, this is what I found:

#define MAX_FD 64

I didn't find a relation to any configurable options, so I made a change to this parameter in the code, recompiled, and, I was able to start up all of my listens without error.

I just wanted to pass this along, and, if it does tie into a configurable parameter, my apologies for not finding it....if someone knows it, please pass that on.  Thanks!

Benjamin Sligar
Senior Development Support Specialist
Transaction Network Services, Inc
P: 703.453.8324
F: 703.453.8391
AIM: dagdromer88
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