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    <title>topic Unknown SSL protocol sandbox SSL false in Integration and Testing</title>
    <link>https://community.developer.cybersource.com/t5/Integration-and-Testing/Unknown-SSL-protocol-sandbox-SSL-false/m-p/57992#M32673</link>
    <description>&lt;P&gt;Hi all,&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;I got this error when proccess a payment:&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;public $post_url = "apitest.authorize.net/xml/v1/request.api";&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;PRE&gt;There was an error processing the transaction. Here is the error message: exception 'AuthnetCIMException' with message 'Connection error: Unknown SSL protocol error in connection to apitest.authorize.net:443&lt;/PRE&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;$post_url = "&lt;A href="https://test.authorize.net/gateway/transact.dll" target="_blank"&gt;https://test.authorize.net/gateway/transact.dll&lt;/A&gt;";&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;PRE&gt;Unknown SSL protocol error in connection to test.authorize.net:443&lt;/PRE&gt;&lt;P&gt;It worked before.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Is there an issue with the server or did something change?&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;please advice&lt;/P&gt;&lt;P&gt;Thanks&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
    <pubDate>Mon, 08 May 2017 08:14:29 GMT</pubDate>
    <dc:creator>webbiismart2014</dc:creator>
    <dc:date>2017-05-08T08:14:29Z</dc:date>
    <item>
      <title>Unknown SSL protocol sandbox SSL false</title>
      <link>https://community.developer.cybersource.com/t5/Integration-and-Testing/Unknown-SSL-protocol-sandbox-SSL-false/m-p/57992#M32673</link>
      <description>&lt;P&gt;Hi all,&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;I got this error when proccess a payment:&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;public $post_url = "apitest.authorize.net/xml/v1/request.api";&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;PRE&gt;There was an error processing the transaction. Here is the error message: exception 'AuthnetCIMException' with message 'Connection error: Unknown SSL protocol error in connection to apitest.authorize.net:443&lt;/PRE&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;$post_url = "&lt;A href="https://test.authorize.net/gateway/transact.dll" target="_blank"&gt;https://test.authorize.net/gateway/transact.dll&lt;/A&gt;";&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;PRE&gt;Unknown SSL protocol error in connection to test.authorize.net:443&lt;/PRE&gt;&lt;P&gt;It worked before.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Is there an issue with the server or did something change?&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;please advice&lt;/P&gt;&lt;P&gt;Thanks&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Mon, 08 May 2017 08:14:29 GMT</pubDate>
      <guid>https://community.developer.cybersource.com/t5/Integration-and-Testing/Unknown-SSL-protocol-sandbox-SSL-false/m-p/57992#M32673</guid>
      <dc:creator>webbiismart2014</dc:creator>
      <dc:date>2017-05-08T08:14:29Z</dc:date>
    </item>
    <item>
      <title>Re: Unknown SSL protocol sandbox SSL false</title>
      <link>https://community.developer.cybersource.com/t5/Integration-and-Testing/Unknown-SSL-protocol-sandbox-SSL-false/m-p/57995#M32676</link>
      <description>&lt;P&gt;&lt;A href="https://community.developer.cybersource.com/t5/News-and-Announcements/Sandbox-Connection-Issues-TLS-1-2-Now-Required/m-p/57948#M196" target="_self"&gt;Sandbox has been upgraded to only accept TLS 1.2 connections.&amp;nbsp;&lt;/A&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Check to be sure your server and versions of Openssl and cURL supports TLS 1.2.&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;PRE&gt;&amp;lt;?php    
$curl_info = curl_version();
echo $curl_info['ssl_version'];&lt;/PRE&gt;&lt;P&gt;which is going to dump out something like "OpenSSL/1.0.1k"&lt;/P&gt;&lt;P&gt;If your version of Openssl is less than that, upgrade it.&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;You can see what your particular version of cURL is using to connect with the following:&lt;/P&gt;&lt;PRE&gt;&amp;lt;?php 
$ch = curl_init('https://www.howsmyssl.com/a/check');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = curl_exec($ch);
curl_close($ch);

$json = json_decode($data);
echo $json-&amp;gt;tls_version ."\n";&lt;/PRE&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Mon, 08 May 2017 08:39:28 GMT</pubDate>
      <guid>https://community.developer.cybersource.com/t5/Integration-and-Testing/Unknown-SSL-protocol-sandbox-SSL-false/m-p/57995#M32676</guid>
      <dc:creator>NexusSoftware</dc:creator>
      <dc:date>2017-05-08T08:39:28Z</dc:date>
    </item>
    <item>
      <title>Re: Unknown SSL protocol sandbox SSL false</title>
      <link>https://community.developer.cybersource.com/t5/Integration-and-Testing/Unknown-SSL-protocol-sandbox-SSL-false/m-p/57996#M32677</link>
      <description>&lt;P&gt;Sandbox has been upgraded to only accept TLS 1.2 connections.&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Check to be sure your server and versions of Openssl and cURL supports TLS 1.2.&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;PRE&gt;&amp;lt;?php    
$curl_info = curl_version();
echo $curl_info['ssl_version'];&lt;/PRE&gt;&lt;P&gt;which is going to dump out something like "OpenSSL/1.0.1k"&lt;/P&gt;&lt;P&gt;If your version of Openssl is less than that, upgrade it.&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;You can see what your particular version of cURL is using to connect with the following:&lt;/P&gt;&lt;PRE&gt;&amp;lt;?php 
$ch = curl_init('https://www.howsmyssl.com/a/check');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = curl_exec($ch);
curl_close($ch);

$json = json_decode($data);
echo $json-&amp;gt;tls_version ."\n";&lt;/PRE&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Mon, 08 May 2017 08:40:59 GMT</pubDate>
      <guid>https://community.developer.cybersource.com/t5/Integration-and-Testing/Unknown-SSL-protocol-sandbox-SSL-false/m-p/57996#M32677</guid>
      <dc:creator>NexusSoftware</dc:creator>
      <dc:date>2017-05-08T08:40:59Z</dc:date>
    </item>
    <item>
      <title>Re: Unknown SSL protocol sandbox SSL false</title>
      <link>https://community.developer.cybersource.com/t5/Integration-and-Testing/Unknown-SSL-protocol-sandbox-SSL-false/m-p/62522#M36821</link>
      <description>&lt;P&gt;a certain webpage with URL is showing you &lt;A href="https://notresponding.net/8-solution-steps-chrome-err_ssl_protocol_error/" target="_self"&gt;Chrome ERR_SSL_PROTOCOL_ERROR&lt;/A&gt; each time you are trying to access it. you try the above mention method or also try your incognito windows for this.&lt;/P&gt;</description>
      <pubDate>Thu, 05 Apr 2018 05:29:12 GMT</pubDate>
      <guid>https://community.developer.cybersource.com/t5/Integration-and-Testing/Unknown-SSL-protocol-sandbox-SSL-false/m-p/62522#M36821</guid>
      <dc:creator>LarryPetter</dc:creator>
      <dc:date>2018-04-05T05:29:12Z</dc:date>
    </item>
    <item>
      <title>Re: Unknown SSL protocol sandbox SSL false</title>
      <link>https://community.developer.cybersource.com/t5/Integration-and-Testing/Unknown-SSL-protocol-sandbox-SSL-false/m-p/62753#M37015</link>
      <description>&lt;P&gt;Is there an issue with the server or did something change?&amp;nbsp;&lt;A href="http://may2018calendar.info/editable/" target="_blank"&gt;May 2018 Editable Calendar&lt;/A&gt;&lt;/P&gt;</description>
      <pubDate>Fri, 20 Apr 2018 10:59:13 GMT</pubDate>
      <guid>https://community.developer.cybersource.com/t5/Integration-and-Testing/Unknown-SSL-protocol-sandbox-SSL-false/m-p/62753#M37015</guid>
      <dc:creator>jilan102</dc:creator>
      <dc:date>2018-04-20T10:59:13Z</dc:date>
    </item>
    <item>
      <title>Re: Unknown SSL protocol sandbox SSL false</title>
      <link>https://community.developer.cybersource.com/t5/Integration-and-Testing/Unknown-SSL-protocol-sandbox-SSL-false/m-p/62910#M37133</link>
      <description>&lt;P&gt;I was receiving a similar error and found this particular thread.&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;PRE&gt;Your registration was failure
Reason	
[curl] 35: error:14077102:SSL routines:SSL23_GET_SERVER_HELLO:unsupported protocol [url] https://test.authorize.net/gateway/transact.dll&lt;/PRE&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Working with a Joomla CMS based website using and extension Event Booking in test mode.&amp;nbsp; Your post made me realize that my issue was I needed to be trying to make the request from an SSL connection.&amp;nbsp; Once I enabled SSL on the test domain I was working with everything worked as expected.&amp;nbsp; Thought I'd mention it in case anyone else doing what I did was stuck for a minute.&lt;/P&gt;</description>
      <pubDate>Tue, 01 May 2018 19:03:42 GMT</pubDate>
      <guid>https://community.developer.cybersource.com/t5/Integration-and-Testing/Unknown-SSL-protocol-sandbox-SSL-false/m-p/62910#M37133</guid>
      <dc:creator>rjrsinc</dc:creator>
      <dc:date>2018-05-01T19:03:42Z</dc:date>
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