Hi Dan,

 

Thanks for your input. Here's some more info -

 

- I'm using Stunnel version 4.16 on Windows Server 2003 Standard. I downloaded the binaries.

 

- I had logs at level 7 ON but they're HUGE so I can't attach them here. What I can tell is that

when the server exited, there was no message logged to suggest that there was a problem.

The server was just going through the negotiations with a client when it died.

 

- Log at startup time says  "No limit detected for number of clients" .

 

- There are messages that say  "Connection rejected: create_client failed" and

   "readsocket: Connection reset by peer (WSAECONNRESET) (10054)" but i don't think they're doing anything to shut the server down.

 

I have not been able to locate where to increase the no. of max FDs on windows. Please let

me know if you do.

I'm going through the Stunnel source code. I came across the function where limits are set.

What I could derive is that for a windows based system there is no limit set to FDs and clients (function get-limits in stunnel.c). Does it mean that limits are governed by Windows settings

in this case ?

 

Please respond back with whatever you can help !!

 

Thanks n Regards,

On 11/26/06, Dan Milne <d@nmilne.com> wrote:

Hi there,

   What's the maximum number of open file descriptors for your OS? Limits of 1024 is normal  - you might be hitting that. 

 

   Running ulimit -n should allow you to check and set that value.

 

Dan

 

On 26/11/2006, at 14:51 , ~ Kunal Sharma ~ wrote:

Hi Friends,

 

I've just joined this group. I would take this as an oppurtunity to discuss a problem I've

been facing in using Stunnel.

 

I've been using Stunnel for quite some time now. It has worked very well all this while.

Recently, I had to shift our webserver onto the Internet and Stunnel accepts the https

connections on the server's behalf.

 

The problem is there are about 4.5 million clients out there in the field and there's a client

coming up to the server atleast every second, if not less. Stunnel accepts the connections

and after a while (like an hour) it just dies ! I see that at a point there are about 950 active

connections and thats the maximum I could see before it dies.

 

Could someone help me diagnose the problem (or better to fix it)

- Is there any performance related issue thats a known problem and I don't know of ?

- What I can look at to see what could be the possible cause ?

- I haven't had a chance to look at the logs yet. Probably they might tell me something.

- Any other pointers / inputs / suggestions would be heartily welcome.

 

I've not been to my office so I won't be able to attach the necessary information like

the version of stunnel, the logs, configuration options etc. But promise to send them as

soon as I'm back on Monday after Thanksgiving.

 

Thanks and Regards,

Kunal

 

 

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Dan Milne d@nmilne.com

http://politiwiki.kicks-ass.net/  

 

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