Re: st_connect timeout problem

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Gene,

I have been trying to do that, but to no avail, still I could not
solve my problem until this weekend.

I'll tell you what happened. My application connects to a lot
of webservers every minute. Between that it just sleep()s.

Well it appeared that I should have read the programming notes on
the State Thread website better, because of the timeout. My program
slept using sleep() (in a source file far away from where I used the
st_*() calls). And when you connect with a timeout value, it is
the timeout _since the last context switch_. Yuk. This caused my
connects to time out faster, the sleeps() in between rounds thus
neede to be longer, and eventually st_connect()s timed out
immediately.

I had a lot of trouble finding it, because in my small testprogram
off course I used st_sleep()...

Maybe you can put something that stresses this behaviour in the
'complete reference', because this has been costing me days and
days to find, and our customers a lot of grief.

Thanks anyway, I really _really_ like State Threads.

Ron Arts

[email protected] wrote:
> Ron,
> 
> Can you extract a reproducible test case (small fragment) from
> your application and post/email source code? Then we can take a
> look at it and investigate.
> 
> --Gene
> 
>>Hello,
>>
>>I am writing an application that does the following:
>>
>>every minute:
>>
>>- read a list of websites/URLs
>>- connect to each of them
>>- retrieve some info from them
>>- close connection
>>
>>I am using st-1.4 compiled with USE_POLL on redhat
>>linux 9 on i386.
>>
>>The problem: one of the sites in the list is
>>firewalled/unreachable, and that's why I use a timeout
>>parameter of 50 seconds to st_connect.
>>
>>Before I used this parameter, by program hang for
>>4 minutes on that particular site before finishing
>>the main loop.
>>
>>But since I added the timeout parameter another strange
>>thing happened: everything works but after 4 iterations
>>of the main loop (so 4 minutes) most connections
>>suddenly get ETIME on st_connect, and after that
>>I have an irregular pattern of thing going right
>>and things going wrong.
>>
>>Does this ring a bell with anyone? Or should I
>>post this to -devel?
>>
>>Thanks,
>>Ron Arts
>>
>>-- 
>>Netland Internet Services
>>bedrijfsmatige internetoplossingen
>>
>>http://www.netland.nl   Kruislaan 419              1098 VA Amsterdam
>>info: 020-5628282       servicedesk: 020-5628280   fax: 020-5628281
>>
>>Never trust a man who can count to 1,023 on his fingers
> 
> 


-- 
Netland Internet Services
bedrijfsmatige internetoplossingen

http://www.netland.nl   Kruislaan 419              1098 VA Amsterdam
info: 020-5628282       servicedesk: 020-5628280   fax: 020-5628281

DEVICE=EXXON.SYS may mess up your environment

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