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Curl Error 35: Unknown SSL protocol error

From: Peter <>
Date: Thu, 03 Nov 2005 12:35:47 +0200


I use libcurl from my PHP program. This code:

       curl_setopt($ch, CURLOPT_URL, $this->_PostURL);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_CAPATH, 'ca-cert-bundle.pem');
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $req);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_TIMEOUT, 250);

used to work just fine on Debian Sarge.

However after migrating to CentOS 4.1 on a new clustered machine
mysterious error started to happen randomly:

Curl Error 35: Unknown SSL protocol error

It happens around 1 time a day.

I added this line but id did not help


please give me an idea what can be the reason and how to debug it ? Do
you need more info ?

Thanks in advance for your help :-)

Kind regards,

Received on 2005-11-03