Title: Nginx compatibility Last modified: September 1, 2016 --- # Nginx compatibility * Resolved [anfieldleung](https://wordpress.org/support/users/anfieldleung/) * (@anfieldleung) * [10 years ago](https://wordpress.org/support/topic/nginx-compatibility-3/) * Hi, * Is it WP Cassify not compatible with Nginx? I got “CAS Authentication failed !” or “page not found” error in my WP multisite under Nginx. The credential is correct and it passed CAS, the error show on a redirected page like [http://domain.com/ticket=xxxxxxxxxxxx-cas](http://domain.com/ticket=xxxxxxxxxxxx-cas). It works fine in my WP multisite on apache of another network site. * [https://wordpress.org/plugins/wp-cassify/](https://wordpress.org/plugins/wp-cassify/) Viewing 10 replies - 1 through 10 (of 10 total) * Plugin Author [Alain-Aymerick FRANCOIS](https://wordpress.org/support/users/aaf017/) * (@aaf017) * [10 years ago](https://wordpress.org/support/topic/nginx-compatibility-3/#post-7568405) * Hi, * I’m not competent on WP with Nginx. But, i think it may be a rewrite rule problem. In your example, question mark is missing in url before ticket get parameter :“ [http://domain.com/ticket=xxxxxxxxxxxx-cas”](http://domain.com/ticket=xxxxxxxxxxxx-cas”);. * It should be like this : * “[http://domain.com/?ticket=xxxxxxxxxxxx-cas”](http://domain.com/?ticket=xxxxxxxxxxxx-cas”);. * Best regards. * Thread Starter [anfieldleung](https://wordpress.org/support/users/anfieldleung/) * (@anfieldleung) * [10 years ago](https://wordpress.org/support/topic/nginx-compatibility-3/#post-7568407) * Sorry there is a “?” in front of the ticket. I just deleted the “?” by mistake when modifying the URL before sent * It is “[http://domain.com/?ticket=xxxxxxxxxxxx-cas”](http://domain.com/?ticket=xxxxxxxxxxxx-cas”); * Thread Starter [anfieldleung](https://wordpress.org/support/users/anfieldleung/) * (@anfieldleung) * [10 years ago](https://wordpress.org/support/topic/nginx-compatibility-3/#post-7568409) * I found this error message in log * ``` 5843#5843: *167 FastCGI sent in stderr: "PHP message: PHP Warning: DOMDocument::loadXML(): Space required after the Public Identifier in Entity, line: 1 in /home//wp_cassify_plugin.php on line 820 ``` * Plugin Author [Alain-Aymerick FRANCOIS](https://wordpress.org/support/users/aaf017/) * (@aaf017) * [10 years ago](https://wordpress.org/support/topic/nginx-compatibility-3/#post-7568410) * There is a problem with CAS Server xml response. * You can try to enable “dump last xml cas server response” option in debug settings. * Then you try to connect. After that, close browser and re-auth with local admin wordpress account. In WP Cassify debug settings, you can show the last xml cas server response in textarea. * Plugin Author [Alain-Aymerick FRANCOIS](https://wordpress.org/support/users/aaf017/) * (@aaf017) * [10 years ago](https://wordpress.org/support/topic/nginx-compatibility-3/#post-7568413) * You can also try this. * In your wp-config.php : * @ini_set(‘display_errors’,’Off’); @ini_set(‘log_errors’,’On’); // (Adapt path to your config) @ini_set(‘error_log’,’/var/www/your-website/phperrors.log’); * In file classes/wp_cassify_plugin.php, at line 346, write this : error_log( print_r( $cas_server_xml_response, TRUE ) ); * Try to connect and then send me phperrors.log content. * Thread Starter [anfieldleung](https://wordpress.org/support/users/anfieldleung/) * (@anfieldleung) * [10 years ago](https://wordpress.org/support/topic/nginx-compatibility-3/#post-7568424) * Here you are * ``` 302 Found

Found

The document has moved here.

``` * Plugin Author [Alain-Aymerick FRANCOIS](https://wordpress.org/support/users/aaf017/) * (@aaf017) * [10 years ago](https://wordpress.org/support/topic/nginx-compatibility-3/#post-7568432) * Hi, * Now, you’ve the answer. WordPress platform can’t join CAS Server to validate the ticket. * Is it the same machine wich host wordpress blog and CAS server ? * What’s configuration of your CAS Server (Tomcat behind Apache or NGINX, or Tomcat only in front) ? Have you enable something like Apache Mod Security ? * I don’t know why your CAS Server make 302 redirect when WordPress try to join him. * From my point of view, it seems to be a network problem with your specific configuration not a plugin bug. * Best regards * Thread Starter [anfieldleung](https://wordpress.org/support/users/anfieldleung/) * (@anfieldleung) * [10 years ago](https://wordpress.org/support/topic/nginx-compatibility-3/#post-7568434) * Hi, * The CAS is Tomcat behind Apache and we didn’t enable Apache Mod Security. The CAS is working fine with WP on Apache. So I think there is something to config in Nignx, do you have any suggestion how to do the configuration on Nginx? * Plugin Author [Alain-Aymerick FRANCOIS](https://wordpress.org/support/users/aaf017/) * (@aaf017) * [10 years ago](https://wordpress.org/support/topic/nginx-compatibility-3/#post-7568438) * Unfortunately, i use only Apache config in my job. I’m not an Nginx Expert. * So, Have you tried to make a wget on CAS home url from your WordPress host ? * If you have also 302 redirect, i’m not sure but it may be have some problem with your Nginx configuration. * It’s possible to see your nginx configuration file ? * See that :[http://serverfault.com/questions/612690/tomcat7-nginx-ssl-causes-redirect-loop](http://serverfault.com/questions/612690/tomcat7-nginx-ssl-causes-redirect-loop) * Best regards. * Thread Starter [anfieldleung](https://wordpress.org/support/users/anfieldleung/) * (@anfieldleung) * [9 years, 12 months ago](https://wordpress.org/support/topic/nginx-compatibility-3/#post-7568481) * It looks like our proxy or DNS cached. It is working now without any changes. Thanks. Viewing 10 replies - 1 through 10 (of 10 total) The topic ‘Nginx compatibility’ is closed to new replies. * ![](https://ps.w.org/wp-cassify/assets/icon-256x256.png?rev=3112582) * [WP Cassify](https://wordpress.org/plugins/wp-cassify/) * [Frequently Asked Questions](https://wordpress.org/plugins/wp-cassify/#faq) * [Support Threads](https://wordpress.org/support/plugin/wp-cassify/) * [Active Topics](https://wordpress.org/support/plugin/wp-cassify/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/wp-cassify/unresolved/) * [Reviews](https://wordpress.org/support/plugin/wp-cassify/reviews/) ## Tags * [compatibility](https://wordpress.org/support/topic-tag/compatibility/) * [nginx](https://wordpress.org/support/topic-tag/nginx/) * 10 replies * 2 participants * Last reply from: [anfieldleung](https://wordpress.org/support/users/anfieldleung/) * Last activity: [9 years, 12 months ago](https://wordpress.org/support/topic/nginx-compatibility-3/#post-7568481) * Status: resolved