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Re: Strange "couldn't connect to host" error

From: Jonathan Arnold <>
Date: Thu, 31 May 2007 16:44:28 -0400

Daniel Stenberg wrote:
> On Thu, 31 May 2007, Jonathan Arnold wrote:
>> We have a routine that gets called every second, goes out to the web,
>> and downloads a tiny (about 50 characters) file.
> What libcurl version? Does it download this from the same server every
> second?

curl, v7.16.2

Yes, it downloads from the same server.

>> It runs okay for some random time, say 30 minutes, but then returns
>> back a "Couldn't connect to host" error.
> That means that the connect() call failed...
>> Should I tweak some timeout?
> Possibly, yes. You should probably check what happens on the wire when
> this failure occurs to pinpoint exactly what to do.

I don't see anything via Wireshark when there is a problem. No packet
at all.

Jonathan Arnold           Software Engineer
inSORS Integrated Communications, Inc Office/fax: 781.391.2818
Received on 2007-05-31