Problem
When using NGINX to proxy pass my FRP dashboard site, FRP hardcodes absolute path /static to the web logic. Thus, when NGINX tries to proxy pass path /frp to 127.0.0.1:<dashboard port>, FRP will send static file requests to /static, which cannot be captured by /frp location, leading to a 404.
Solution
Concept
Capture /static/ location in NGINX and rewrite URI to be preceded by /frp.
This solution is generalizable and can be used to proxy any absolute paths.
Code
location /static/ {
rewrite ^ $scheme://$host/frp$uri;
}
Additional Notes
Limitation
With this rewrite scheme, there can only be one application using
/static/, and the actual/static/path should not exist, as they get overwritten by this NGINX location. This should be a fundamental limitation, as NGINX has no information of which application is calling/static/when absolute paths are used (this might be doable with request fields?).