Unable to run behind a reverse proxy

I’m trying to run, without success, the tus server as an express middleware, behind a reverse proxy hosted in a URL other than “/”.

On the server side:

const tusServer = new tus.Server();
tusServer.datastore = new tus.FileStore({
  path: "/files"
});
const uploadApp = express();
uploadApp.all("*", tusServer.handle.bind(tusServer));
app.use("/uploads", uploadApp);

When I start an upload on the browser, it correctly creates it, but notice how /uploads has a prefix path. The server responds with an incorrect location, and the following PATCH request don’t work well:

Going through the closed issues, I saw a fix mentioning an undocumented property relativeLocation, so I tried to set that to true:

File creation still works and now it only returns the filename, but then the PATCH request fails, which although now includes the correct path prefix, I think it might be missing the “files/” part of it.

Am I doing anything wrong or missing something? thanks for the help.

[mitjap]

Just use relative location and should work with uppy.

[mitjap]

This still needs changes.