Unable to configure converse.js

[mixman68]

Hello,

I get this error when I get the url, I don't know how debug this, do you have an idea ?

2025-06-15 15:21:41.918 [error] HTTP handler crashed: exception error:
 {module_not_loaded,mod_conversejs,<<"xmpp.redacted.lan">>}
    in function  gen_mod:get_module_opts/2 (src/gen_mod.erl, line 430)
    in call from gen_mod:get_module_opt/3 (src/gen_mod.erl, line 410)
    in call from mod_conversejs:get_extra_options/1 (src/mod_conversejs.erl, line 201)
    in call from mod_conversejs:process/2 (src/mod_conversejs.erl, line 56)
    in call from ejabberd_http:process/2 (src/ejabberd_http.erl, line 378)
    in call from ejabberd_http:process_request/1 (src/ejabberd_http.erl, line 508)
    in call from ejabberd_http:process_header/2 (src/ejabberd_http.erl, line 297)
    in call from ejabberd_http:parse_headers/1 (src/ejabberd_http.erl, line 222)

But the host for this XMPP server is redacted.lan and aliasing is managed by SRV records, so I tried to put default_domain option and ejabberd crash with this error 👍

2025-06-15 15:55:37.650 [critical] Failed to start ejabberd application:
 Invalid value of option modules->mod_conversejs->default_domain:
 Failed to reuse route 'redacted.lan' because it's already registered on a virtual host

[badlop]

I don't know how debug this, do you have an idea ?

Explain what ejabberd version you installed, from what method, your ejabberd configuration file, and any other system setup that you consider may be relevant (in this case, your name aliasing).

[mixman68]

Hi, there is some snippets :

hosts:
  - "redacted.lan"

listen:
  -
    port: 443
    ip: "::"
    module: ejabberd_http
    request_handlers:
      "/captcha": ejabberd_captcha
      "/api": mod_http_api
      "/bosh": mod_bosh
      "/upload": mod_http_upload
      "/ws": ejabberd_http_ws
      "/oauth": ejabberd_oauth
      "/admin": ejabberd_web_admin
      "/conversejs": mod_conversejs
    tls: true
    default_host: "redacted.lan"

modules:
  mod_conversejs:
    bosh_service_url: "https://xmpp.redacted.lan/bosh"
    websocket_url: "wss://xmpp.redacted.lan/ws"

The xmpp server is on xmpp.redacted.lan, and redacted.lan has SRV records to permit to login toto@redacted.lan

After set that, try to go to https://xmpp.redacted.lan/conversejs

and the module crash with error log posted at the first topic, nothing else

[badlop]

Aha, here is the problem: option default_host for ejabberd_http was added years ago in commit 7d623d5. However it was problematic and the usage was removed in commit 83c291c. But the option itself and the documentation was not yet removed!

I'm thinking in an alternative; instead of default_host in ejabberd_http, there could be a hosts_alias toplevel option like:

hosts:
  - redacted.lan

hosts_alias:
  xmpp.redacted.lan: redacted.lan

If you can try it, the experimental hosts_alias option is available in:

• source code in the branch https://github.com/badlop/ejabberd/tree/4400-converse
• binary installers https://github.com/badlop/ejabberd/actions/runs/15735412534

I don't know if option default_domain in mod_conversejs is still necessary or not. If you can try, please comment your results.

[mixman68]

This binaries works fine, xmpp.redacted.lan/conversejs resolve host redacted.lan and all is good :)

[badlop]

Ok then, that patch is now merged in ejabberd in c20d745