How to solve the issue of missing request parameters when forwarding requests with nginx?
When forwarding requests using NGINX, if the destination server is missing the request parameters, it may be due to the following reasons:
- Configuration error: Make sure that the proxy_pass directive in the NGINX configuration file is correctly set and no other directives are overriding the request parameters. For example, verify that the proxy_set_header directive is correctly setting the request headers.
- Encoding issue: If the request parameters contain special characters or non-ASCII characters, they may be incorrectly encoded or decoded, resulting in lost parameters. You can try adding the following directive to the NGINX configuration file to solve this issue:
- Set the character set to utf-8 and clear the Accept-Encoding header in the proxy configuration.
- This will ensure that the request parameters are passed in UTF-8 encoding and disable any additional encoding on the request content.
- Cache issue: If the target server has caching enabled, subsequent requests after the first request may directly retrieve the response from the cache without passing request parameters. To disable caching, you can try adding the following directive to the NGINX configuration file.
- disable proxy cache;
- Disabling NGINX’s caching function will ensure that request parameters are passed with every request.
If the above solutions do not work, you may want to consider using NGINX’s logging feature to check the log files for any errors or warning messages during the request forwarding process. You can enable logging in the configuration file by using the following command:
error_log /var/log/nginx/error.log;
Next, check the error log file for more detailed information about the missing request forwarding parameters, and investigate and address the issue further based on the error message.
