Web server and reverse proxy

Start the embedded Web UI with:

.\upbrr.exe serve

Defaults:

Setting	Default
Host	localhost
Port	7480
Open browser	enabled
External base path	/
Session lifetime	1,440 minutes

Precedence

Serve settings resolve in this order:

1. CLI flags;
2. UPBRR_WEB_* environment variables;
3. web-config.json beside the active database;
4. defaults.

Supported environment variables:

Variable	Purpose
UPBRR_WEB_HOST	Listen host
UPBRR_WEB_PORT	Listen port
UPBRR_WEB_BASE_URL	External URL or path prefix
UPBRR_WEB_OPEN_BROWSER	Whether to open a browser at startup
UPBRR_WEB_TRUSTED_PROXIES	Comma-separated trusted proxy addresses or networks

Use --persist-web-config to save supplied serve settings. Add --persist-listen when the listen host or port should also be saved.

.\upbrr.exe serve --host 127.0.0.1 --port 7480 --persist-listen --persist-web-config

First-run authentication and browse policy

The first browser connection creates an administrator account. The same setup asks for one or more browse roots or explicit unrestricted browsing.

Browse roots restrict browser-driven folder selection and file import. They do not restrict a direct CLI input path. Store them in web-auth.json, separate from imported application configuration.

--dev-no-auth disables browser authentication only on loopback hosts and is intended for local development. Do not use it for a network-accessible deployment.

Subdomain proxy

A dedicated subdomain keeps upbrr at the web root, so no base-path setting is needed:

server {
  server_name upbrr.example.test;

  location / {
    proxy_pass http://localhost:7480/;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_buffering off;
  }
}

Start normally:

.\upbrr.exe serve

Path-prefix proxy

When the browser sees https://example.test/upbrr/, tell upbrr the same external base path:

.\upbrr.exe serve --base-url https://example.test/upbrr/

For containers:

environment:
  - UPBRR_WEB_BASE_URL=/upbrr/
  - UPBRR_HEALTHCHECK_URL=http://127.0.0.1:7480/upbrr/api/auth/status

Retain the prefix when proxying:

server {
  server_name example.test;

  location = /upbrr {
    return 301 /upbrr/;
  }

  location /upbrr/ {
    proxy_pass http://localhost:7480/upbrr/;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_buffering off;
  }
}

The supported layout keeps /upbrr/ on both sides. Rewriting only some HTML, API, event-stream, cookie, or asset paths causes partial failures.

HTTPS termination

When a trusted reverse proxy terminates HTTPS and forwards HTTP to upbrr, add its address or network to trusted_proxies in web-config.json or UPBRR_WEB_TRUSTED_PROXIES. upbrr trusts forwarded scheme information only from configured proxies when deciding whether cookies require the secure flag.

Do not trust broad networks unless every host in them is under your control.