How do you configure request headers in Nginx?

To configure the request headers of Nginx, you can choose one of the following methods:

1. Use the proxy_set_header directive: This directive allows for the setting of request header information in Nginx. For example, to set the X-Forwarded-For request header as the client’s IP address, the following directive can be added in the location block of the Nginx configuration file.
2. In the “location” block, set the header X-Forwarded-For to $proxy_add_x_forwarded_for.
3. Using the add_header directive: This directive allows you to add custom request header information. For example, to add the X-Custom-Header request header with a custom value, you can add the following directive in the server block or location block of the Nginx configuration file.
4. server {
   …
   include X-Custom-Header “Custom Value”;
   …
   }
5. To set additional request header information in Nginx, use the more_set_headers directive (requires installation of the headers-more-nginx-module). Install and enable the headers-more-nginx-module, then add the directive in the location block of the Nginx configuration file.
6. In the specified location, add a custom header with the value “Custom Value”.

These are some common methods for configuring request headers. Choose the one that fits your needs and add the corresponding directive to the appropriate location in the Nginx configuration file.