recaptcha causes socket errors.

[zmenchho]

Script URL: http://support.pckeyboard.com
Version of script: 2.5.2
Hosting company: self
URL of phpinfo.php: http://support.pckeyboard.com/7sholen8/phpinfo.php
URL of session_test.php: http://support.pckeyboard.com/7sholen8/session_test.php
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When we have recaptcha enabled, users are unable to submit tickets via the web interface, they receive an error, "Could not open socket". I disable recaptcha and it works just fine.

[Klemen]

This happens because your server has problems connecting to www.google.com to verify API key.

This means either fsockopen function isn't working on the server or there is a DNS issue when looking up www.google.com

You can try changing this code in "inc/recaptcha/recaptchalib.php" from

Code: Select all

define("RECAPTCHA_VERIFY_SERVER", "www.google.com");

to

Code: Select all

define("RECAPTCHA_VERIFY_SERVER", "74.125.227.48");

and see if that helps.

If not you will need to either disable recaptcha or check with your host why PHP fsockopen function can't connect to www.google.com on port 80.

[zmenchho]

Actually I found the issue. . . the server was trying to connect on IPV6 and i guess recaptcha is not working with IPv6.

I changed this line

Code: Select all

      $response = '';
        if( false == ( $fs = @fsockopen($host, $port, $errno, $errstr, 10) ) ) {
                die ('Could not open socket');

to

Code: Select all

        $response = '';
        if( false == ( $fs = @fsockopen(gethostbyname($host), $port, $errno, $errstr, 10) ) ) {
                die ('Could not open socket');

[Klemen]

You might want to try IP approach as well, so your server doesn't have to do a host by name lookup everytime a captcha is loaded.