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What are the rewrite rules for Nginx Plus?
We’ll assume you’re familiar with the HTTP response codes and with regular expressions (NGINX and NGINX Plus use the Perl syntax). The two directives for general‑purpose NGINX rewrite are return and rewrite, and the try_files directive is a handy way to direct requests to application servers.
How to avoid pitfalls and common mistakes in Nginx?
For instance, if a request is made for /forum/avatar/1232.jpg/file.php which does not exist but if /forum/avatar/1232.jpg does, the PHP interpreter will process /forum/avatar/1232.jpg instead. If this contains embedded PHP code, this code will be executed accordingly. Options for avoiding this are:
How does Nginx check for the existence of a file?
NGINX checks for the existence of the files and directories in order (constructing the full path to each file from the settings of the root and alias directives), and serves the first one it finds. To indicate a directory, add a slash at the end of the element name.
Why does Nginx drop headers with underscores?
If you do not explicitly set underscores_in_headers on;, NGINX will silently drop HTTP headers with underscores (which are perfectly valid according to the HTTP standard). This is done in order to prevent ambiguities when mapping headers to CGI variables as both dashes and underscores are mapped to underscores during that process.
What does the return directive do in Nginx?
The return directive tells NGINX to stop processing the request and immediately send code 301 (Moved Permanently) and the specified rewritten URL to the client.
Which is the final element in Nginx try _ files?
The final element can be a named location, indicated by an initial at‑sign ( @ ). The try_files directive commonly uses the $uri variable, which represents the part of the URL after the domain name. In the following example, NGINX serves a default GIF file if the file requested by the client doesn’t exist.
Do you need a return directive after a rewrite?
To return other codes, you need to include a return directive after the rewrite directive (see the example below). And finally the rewrite directive does not necessarily halt NGINX’s processing of the request as return does, and it doesn’t necessarily send a redirect to the client.