Can't make sub-paths work

shimitar commented

2026-09-07 13:26:44 +03:00

My docker-compose:

services:
  webprint:
    image: forged.hel.alfredolin.eu/webprint:latest
    ports:
      - "3311:3001"
    environment:
      - PORT=3001
      - JWT_SECRET=xxx
      - PRINTER_NAME=xxx
      - ADMIN_USER=xxx
      - ADMIN_PASS=xxx
      - DEBUG_ERRORS=true
      - GIN_MODE=test
      - HOST_URL=https://comain.com/printer
      - LP_GID=7
    volumes:
      - ./db:/data
      - ./tmp-printing:/tmp/printing-app
      - /run/cups:/run/cups
    restart: unless-stopped
#    depends_on:
#      - cups
    networks:
      - webprint-net

My nginx relevant section:


location = /printer {
        return 301 https://$host/printer/;
}

# Interfaccia Web stmapante HP
location /printer/ {
        proxy_pass http://127.0.0.1:3311/;
}

In the logs i see:

[webprint] | 2026/09/07 10:25:12 Warning: APPRISE_URL not set — notifications disabled
[webprint] | 2026/09/07 10:25:12 Warning: HOST_URL is https:// — cookies will be marked Secure.
[webprint] | 2026/09/07 10:25:12 Warning: Clients MUST reach the app over HTTPS (e.g. reverse proxy with TLS),
[webprint] | 2026/09/07 10:25:12 Warning: otherwise browsers silently drop the session cookie and login will loop.
[webprint] | 2026/09/07 10:25:12 === Configuration ===
[webprint] | 2026/09/07 10:25:12 Port: 3001
[webprint] | 2026/09/07 10:25:12 Printer: 
[webprint] | 2026/09/07 10:25:12 Debug: true
[webprint] | 2026/09/07 10:25:12 Apprise: false
[webprint] | 2026/09/07 10:25:12 Max file age: 24h
[webprint] | 2026/09/07 10:25:12 Rate limit: 15/min
[webprint] | 2026/09/07 10:25:12 Max login attempts: 5
[webprint] | 2026/09/07 10:25:12 Host URL: https://domain.com/printer
[webprint] | 2026/09/07 10:25:12 Base path: /printer
[webprint] | 2026/09/07 10:25:12 Secure cookies: true
[webprint] | 2026/09/07 10:25:12 OIDC: false
[webprint] | 2026/09/07 10:25:12 =====================
[webprint] | 2026/09/07 10:25:12 WebPrint version: 1.0.7
[webprint] | 2026/09/07 10:25:12 [DB] User count: 1
[webprint] | 2026/09/07 10:25:12 [DB] Users already exist, skipping admin seed
[webprint] | 2026/09/07 10:25:12 Database initialized at /data/print.db
[webprint] | 2026/09/07 10:25:12 🌐 Loaded locale: en (174 keys)
[webprint] | 2026/09/07 10:25:12 🌐 Loaded locale: fr (174 keys)
[webprint] | 2026/09/07 10:25:12 🌐 Loaded locale: de (174 keys)
[webprint] | 2026/09/07 10:25:12 🌐 Loaded locale: fi (174 keys)
[webprint] | 2026/09/07 10:25:12 Syncing printers with CUPS...
[webprint] | 2026/09/07 10:25:12 [CUPS] Starting printer sync...
[webprint] | 2026/09/07 10:25:12 [CUPS] Discovered 1 printers, default: xxx
[webprint] | 2026/09/07 10:25:12 [CUPS] Processing printer: xxx (enabled=true, default=true, location=)
[webprint] | 2026/09/07 10:25:12 [CUPS] lpoptions for xxx produced stderr: lpoptions: Unable to get PPD file for xxx: No printer-uri found
[webprint] | 2026/09/07 10:25:12 [CUPS] Updated printer: xxx
[webprint] | 2026/09/07 10:25:12 [CUPS] Sync complete: 1 printers discovered, 1 in database
[webprint] | 2026/09/07 10:25:12 [Cleanup] Started: removing files older than 24h from /tmp/printing-app
[webprint] | 2026/09/07 10:25:12 🚀 Server starting on :3001 (base path: "/printer")


[webprint] | [GIN] 2026/09/07 - 10:25:37 | 404 |      39.895µs |       10.89.0.2 | GET      "/"

and in borwser i get a 404 page not found, from the app itself (not from nginx).

URL: https://domain.com/printer My docker-compose: ``` services: webprint: image: forged.hel.alfredolin.eu/webprint:latest ports: - "3311:3001" environment: - PORT=3001 - JWT_SECRET=xxx - PRINTER_NAME=xxx - ADMIN_USER=xxx - ADMIN_PASS=xxx - DEBUG_ERRORS=true - GIN_MODE=test - HOST_URL=https://comain.com/printer - LP_GID=7 volumes: - ./db:/data - ./tmp-printing:/tmp/printing-app - /run/cups:/run/cups restart: unless-stopped # depends_on: # - cups networks: - webprint-net ``` My nginx relevant section: ``` location = /printer { return 301 https://$host/printer/; } # Interfaccia Web stmapante HP location /printer/ { proxy_pass http://127.0.0.1:3311/; } ``` In the logs i see: ``` [webprint] | 2026/09/07 10:25:12 Warning: APPRISE_URL not set — notifications disabled [webprint] | 2026/09/07 10:25:12 Warning: HOST_URL is https:// — cookies will be marked Secure. [webprint] | 2026/09/07 10:25:12 Warning: Clients MUST reach the app over HTTPS (e.g. reverse proxy with TLS), [webprint] | 2026/09/07 10:25:12 Warning: otherwise browsers silently drop the session cookie and login will loop. [webprint] | 2026/09/07 10:25:12 === Configuration === [webprint] | 2026/09/07 10:25:12 Port: 3001 [webprint] | 2026/09/07 10:25:12 Printer: [webprint] | 2026/09/07 10:25:12 Debug: true [webprint] | 2026/09/07 10:25:12 Apprise: false [webprint] | 2026/09/07 10:25:12 Max file age: 24h [webprint] | 2026/09/07 10:25:12 Rate limit: 15/min [webprint] | 2026/09/07 10:25:12 Max login attempts: 5 [webprint] | 2026/09/07 10:25:12 Host URL: https://domain.com/printer [webprint] | 2026/09/07 10:25:12 Base path: /printer [webprint] | 2026/09/07 10:25:12 Secure cookies: true [webprint] | 2026/09/07 10:25:12 OIDC: false [webprint] | 2026/09/07 10:25:12 ===================== [webprint] | 2026/09/07 10:25:12 WebPrint version: 1.0.7 [webprint] | 2026/09/07 10:25:12 [DB] User count: 1 [webprint] | 2026/09/07 10:25:12 [DB] Users already exist, skipping admin seed [webprint] | 2026/09/07 10:25:12 Database initialized at /data/print.db [webprint] | 2026/09/07 10:25:12 🌐 Loaded locale: en (174 keys) [webprint] | 2026/09/07 10:25:12 🌐 Loaded locale: fr (174 keys) [webprint] | 2026/09/07 10:25:12 🌐 Loaded locale: de (174 keys) [webprint] | 2026/09/07 10:25:12 🌐 Loaded locale: fi (174 keys) [webprint] | 2026/09/07 10:25:12 Syncing printers with CUPS... [webprint] | 2026/09/07 10:25:12 [CUPS] Starting printer sync... [webprint] | 2026/09/07 10:25:12 [CUPS] Discovered 1 printers, default: xxx [webprint] | 2026/09/07 10:25:12 [CUPS] Processing printer: xxx (enabled=true, default=true, location=) [webprint] | 2026/09/07 10:25:12 [CUPS] lpoptions for xxx produced stderr: lpoptions: Unable to get PPD file for xxx: No printer-uri found [webprint] | 2026/09/07 10:25:12 [CUPS] Updated printer: xxx [webprint] | 2026/09/07 10:25:12 [CUPS] Sync complete: 1 printers discovered, 1 in database [webprint] | 2026/09/07 10:25:12 [Cleanup] Started: removing files older than 24h from /tmp/printing-app [webprint] | 2026/09/07 10:25:12 🚀 Server starting on :3001 (base path: "/printer") [webprint] | [GIN] 2026/09/07 - 10:25:37 | 404 | 39.895µs | 10.89.0.2 | GET "/" ``` and in borwser i get a 404 page not found, from the app itself (not from nginx).

shimitar commented

2026-09-07 13:28:32 +03:00

Author

Local access (127.0.0.1:3311/printer/) works

shimitar commented

2026-09-07 13:29:40 +03:00

Author

I see in browser debug window that there is a GET to https://domain.com/printer/login and this is the 404

shimitar commented

2026-09-07 13:31:14 +03:00

Author

Some app logs for the tests i did:

[webprint] | [GIN] 2026/09/07 - 10:25:37 | 404 |      39.895µs |       10.89.0.2 | GET      "/"
[webprint] | [GIN] 2026/09/07 - 10:27:10 | 404 |       9.328µs |       10.89.0.2 | GET      "/print"
[webprint] | [GIN] 2026/09/07 - 10:27:10 | 404 |       7.154µs |       10.89.0.2 | GET      "/favicon.ico"
[webprint] | [GIN] 2026/09/07 - 10:27:12 | 404 |     274.667µs |       10.89.0.2 | GET      "/print"
[webprint] | [GIN] 2026/09/07 - 10:27:12 | 404 |       9.328µs |       10.89.0.2 | GET      "/print"
[webprint] | [GIN] 2026/09/07 - 10:27:18 | 302 |       26.07µs |       10.89.0.2 | GET      "/printer/"
[webprint] | 2026/09/07 10:27:18 [Auth] Cookie err: <nil>, token length: 153
[webprint] | 2026/09/07 10:27:18 [Auth] Valid token for user: admin
[webprint] | [GIN] 2026/09/07 - 10:27:18 | 200 |    1.288476ms |       10.89.0.2 | GET      "/printer/print"
[webprint] | [GIN] 2026/09/07 - 10:27:19 | 200 |     210.667µs |       10.89.0.2 | GET      "/printer/static/style.css"
[webprint] | [GIN] 2026/09/07 - 10:27:19 | 200 |      76.173µs |       10.89.0.2 | GET      "/printer/static/logo-dark.svg"
[webprint] | [GIN] 2026/09/07 - 10:27:29 | 404 |       7.574µs |       10.89.0.2 | GET      "/"
[webprint] | [GIN] 2026/09/07 - 10:27:39 | 302 |      32.371µs |       10.89.0.2 | GET      "/printer/"
[webprint] | [GIN] 2026/09/07 - 10:27:39 | 404 |       4.208µs |       10.89.0.2 | GET      "/print"
[webprint] | 2026/09/07 10:28:08 [Auth] Cookie err: http: named cookie not present, token length: 0
[webprint] | 2026/09/07 10:28:08 [Auth] Token parse failed: http: named cookie not present
[webprint] | 2026/09/07 10:28:08 [Auth] Token parse failed: token is malformed: token contains an invalid number of segments
[webprint] | 2026/09/07 10:28:08 [Auth] Valid token for user: 
[webprint] | 
[webprint] | 2026/09/07 10:28:08 /app/auth.go:82 record not found
[webprint] | [0.284ms] [rows:0] SELECT * FROM `users` WHERE username = "" ORDER BY `users`.`id` LIMIT 1
[webprint] | [GIN] 2026/09/07 - 10:28:08 | 302 |     399.903µs |       10.89.0.2 | GET      "/printer/print"
[webprint] | 2026/09/07 10:28:08 [Auth] Failed to fetch user : record not found
[webprint] | [GIN] 2026/09/07 - 10:28:08 | 404 |       8.546µs |       10.89.0.2 | GET      "/login"
[webprint] | [GIN] 2026/09/07 - 10:28:49 | 404 |       10.71µs |       10.89.0.2 | GET      "/login"
[webprint] | [GIN] 2026/09/07 - 10:30:27 | 404 |      24.967µs |       10.89.0.2 | GET      "/login"
[webprint] | [GIN] 2026/09/07 - 10:30:30 | 302 |      35.738µs |       10.89.0.2 | GET      "/printer/"
[webprint] | [GIN] 2026/09/07 - 10:30:30 | 404 |       4.348µs |       10.89.0.2 | GET      "/print"

Some app logs for the tests i did: ``` [webprint] | [GIN] 2026/09/07 - 10:25:37 | 404 | 39.895µs | 10.89.0.2 | GET "/" [webprint] | [GIN] 2026/09/07 - 10:27:10 | 404 | 9.328µs | 10.89.0.2 | GET "/print" [webprint] | [GIN] 2026/09/07 - 10:27:10 | 404 | 7.154µs | 10.89.0.2 | GET "/favicon.ico" [webprint] | [GIN] 2026/09/07 - 10:27:12 | 404 | 274.667µs | 10.89.0.2 | GET "/print" [webprint] | [GIN] 2026/09/07 - 10:27:12 | 404 | 9.328µs | 10.89.0.2 | GET "/print" [webprint] | [GIN] 2026/09/07 - 10:27:18 | 302 | 26.07µs | 10.89.0.2 | GET "/printer/" [webprint] | 2026/09/07 10:27:18 [Auth] Cookie err: <nil>, token length: 153 [webprint] | 2026/09/07 10:27:18 [Auth] Valid token for user: admin [webprint] | [GIN] 2026/09/07 - 10:27:18 | 200 | 1.288476ms | 10.89.0.2 | GET "/printer/print" [webprint] | [GIN] 2026/09/07 - 10:27:19 | 200 | 210.667µs | 10.89.0.2 | GET "/printer/static/style.css" [webprint] | [GIN] 2026/09/07 - 10:27:19 | 200 | 76.173µs | 10.89.0.2 | GET "/printer/static/logo-dark.svg" [webprint] | [GIN] 2026/09/07 - 10:27:29 | 404 | 7.574µs | 10.89.0.2 | GET "/" [webprint] | [GIN] 2026/09/07 - 10:27:39 | 302 | 32.371µs | 10.89.0.2 | GET "/printer/" [webprint] | [GIN] 2026/09/07 - 10:27:39 | 404 | 4.208µs | 10.89.0.2 | GET "/print" [webprint] | 2026/09/07 10:28:08 [Auth] Cookie err: http: named cookie not present, token length: 0 [webprint] | 2026/09/07 10:28:08 [Auth] Token parse failed: http: named cookie not present [webprint] | 2026/09/07 10:28:08 [Auth] Token parse failed: token is malformed: token contains an invalid number of segments [webprint] | 2026/09/07 10:28:08 [Auth] Valid token for user: [webprint] | [webprint] | 2026/09/07 10:28:08 /app/auth.go:82 record not found [webprint] | [0.284ms] [rows:0] SELECT * FROM `users` WHERE username = "" ORDER BY `users`.`id` LIMIT 1 [webprint] | [GIN] 2026/09/07 - 10:28:08 | 302 | 399.903µs | 10.89.0.2 | GET "/printer/print" [webprint] | 2026/09/07 10:28:08 [Auth] Failed to fetch user : record not found [webprint] | [GIN] 2026/09/07 - 10:28:08 | 404 | 8.546µs | 10.89.0.2 | GET "/login" [webprint] | [GIN] 2026/09/07 - 10:28:49 | 404 | 10.71µs | 10.89.0.2 | GET "/login" [webprint] | [GIN] 2026/09/07 - 10:30:27 | 404 | 24.967µs | 10.89.0.2 | GET "/login" [webprint] | [GIN] 2026/09/07 - 10:30:30 | 302 | 35.738µs | 10.89.0.2 | GET "/printer/" [webprint] | [GIN] 2026/09/07 - 10:30:30 | 404 | 4.348µs | 10.89.0.2 | GET "/print" ```

Alfredolin added the

bug

label

2026-09-07 14:04:53 +03:00

Alfredolin commented

2026-09-07 14:15:56 +03:00

Owner

Your nginx config should put "printer" in the path too, as per README.md.

Try again with:

location /printer/ {
        proxy_pass http://127.0.0.1:3311/printer;
}

Your nginx config should put "printer" in the path too, as per README.md. Try again with: ```conf location /printer/ { proxy_pass http://127.0.0.1:3311/printer; } ```

shimitar commented

2026-09-07 14:29:34 +03:00

Author

Ok i managed to fix my NGINX setup:

location /printer {
        proxy_pass http://127.0.0.1:3311/printer;
}

it is to be noted where the "/" goes, or better, must be avoided. This is a quick of NGINX setup, but pretty annoying. It probably stems from something inside the webprint app, because the above setup just works for a lot of other service. But it's ok, maybe you could add the nginx setup to the readme as well.

Ok i managed to fix my NGINX setup: ``` location /printer { proxy_pass http://127.0.0.1:3311/printer; } ``` it is to be noted where the "/" goes, or better, must be avoided. This is a quick of NGINX setup, but pretty annoying. It probably stems from something inside the webprint app, because the above setup just works for a lot of other service. But it's ok, maybe you could add the nginx setup to the readme as well.

Alfredolin commented

2026-09-07 14:37:18 +03:00

Owner

Very good, writing previous comment I was also wondering about trailing slashes, but did not have the time to check it through.

I'll add it to the README.md, thank you!

Very good, writing previous comment I was also wondering about trailing slashes, but did not have the time to check it through. I'll add it to the README.md, thank you!

Alfredolin closed this issue

2026-09-07 14:45:55 +03:00

Rows
Columns

Can't make sub-paths work #14