'Can a response from an http request alter the base address in the next client request?

I have an octoprint server running at http://192.168.1.205. I also have an nginx server hosting myDomain. I want to be able to use the nginx server to pass on a request for http://myDomain/octo to http://192.168.1.205 using a reverse proxy. Here is my nginx code...

server {
  server_name myDomain;
  location /octo/ {
    rewrite ^/octo/(.*) /$1 break;  #strip /octo from url
    proxy_pass http://192.168.1.205;
  }
}

The first http://myDomain/octo request is passed on to http://192.168.1.205 correctly. But after the first response the code in the client makes another request to http://myDomain/moreUri. Since this uri doesn't have /octo nginx doesn't know to send it to http://192.168.1.205/moreUri. Is there a way to have nginx change something in the first response so that the client then makes following requests to http://myDomain/octo/moreUri?

I was able to accomplish this for a case where the octoprint server responded with a redirect. I used ...

proxy_redirect http://192.168.1.205/ http://myDomain/octo/;

and it worked. But that only works on redirects and the following requests were wrong again.

Solution 1:^[1]

Is there a way to have nginx change something in the first response so that the client then makes following requests to http://myDomain/octo/moreUri?

I am not aware that this is possible.

What about to adjust the nginx configuration accordingly ? using location / to process all requests within that block and add an additional redirect directive to address the "Since this uri doesn't have /octo nginx doesn't know to send it to http://192.168.1.205/moreUri" should do the trick.

server {
  server_name myDomain;
  location / {
    rewrite ^/octo/(.*) /$1 break;  #strip /octo from url
    rewrite ^/(.*)/(.*) /octo/$2 break;  #rewrite /moreURI to /octo/moreURI
    proxy_pass http://192.168.1.205;
  }
}

No matter if the above nginx reconfiguration fixes your issue, i assume the root cause why you need to configure the nginx as reverse proxy in this way might be a misconfigured (or not optimally configured) application. Check the config file if it is possible to configure the applications base path. If so, set it to /octo/ (so the application itself prepends /octo/ to all the links it presents to the user and all requests to the backend automatically) and adjust the rewrite rules accordingly.

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Solution 1	mottek

'Can a response from an http request alter the base address in the next client request?

Solution 1:[1]

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Solution 1:^[1]