I have a dev environment on an old sever running curl 7.19.7.
Recently I've noticed that Paypal Express no longer works and is returning an error
"Unable to communicate with the PayPal gateway.".
Digging into the exception logs you can see
exception 'Exception' with message 'PayPal NVP CURL connection error #35: SSL connect error' in /path/app/code/core/Mage/Paypal/Model/Api/Nvp.php:983 Stack trace: #0 /path/app/code/core/Mage/Paypal/Model/Api/Nvp.php(616): Mage_Paypal_Model_Api_Nvp->call('SetExpressCheck...', Array) #1 /path/app/code/core/Mage/Paypal/Model/Express/Checkout.php(381): Mage_Paypal_Model_Api_Nvp->callSetExpressCheckout() #2 /path/app/code/core/Mage/Paypal/Controller/Express/Abstract.php(108): Mage_Paypal_Model_Express_Checkout->start('http://asdf...', 'http://asdf...', false) #3 /path/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Paypal_Controller_Express_Abstract->startAction() #4 /path/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('start') #5 /path/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http)) #6 /path/app/code/core/Mage/Core/Model/App.php(365): Mage_Core_Controller_Varien_Front->dispatch() #7 /path/app/Mage.php(684): Mage_Core_Model_App->run(Array) #8 /path/index.php(210): Mage::run('uk', 'store')
I don't know if Paypal have changed anything with their sandbox recently, but went to the api-3t.sandbox.paypal.com URL on SSLLabs and saw that the only protocol they support is TLS 1.2.
After reading up on setting protocol versions in the PHP manual I hackily added the following
nano +194 lib/Varien/Http/Adapter/Curl.php
curl_setopt_array($this->_getResource(), $options); +curl_setopt($this->_getResource(), CURLOPT_SSLVERSION, 6); return $body;
Great! After an apache graceful I can now use Paypal express. However, I am not happy that I've had to hack the core. I'm also not happy that I've had to hack the core in a place specific to
curl rather than to Paypal.
Does anyone have any advice on a correct way to fix this issue?
Just confirming some extra findings, this does not affect Paypal Standard in Magento as it does not appear to use
curl under the hood. We were getting false negatives on certain machines.
Q: "How can this possibly be working! curl fails to connect to the sandbox on the command line"
A: "It's using paypal standard and not express, it doesn't use