Collegamento al dominio personale restituisce "Internal Server Error"

Supporto
1

Ciao,

attualmente stiamo utilizzando Discourse v2.3.2 e abbiamo riscontrato un problema strano. Se creo un argomento o un post con un link al dominio del forum (senza percorso), non riesco a salvarlo a causa di un errore interno del server.

Supponiamo che l’URL del mio forum sia https://www.my-forum.com e scrivo qualcosa del genere:
“Dai un'occhiata alla nostra [homepage](https://www.my-forum.com)”

Il risultato è il seguente:

38
382142×1340 178 KB

Non appena modifico il link in […] [homepage](https://www.my-forum.com/latest) o […] [homepage](https://www.my-forum.com/categories), tutto funziona correttamente.

Ecco i log:

Messaggio (21 copie riportate)

NoMethodError (metodo `split` non definito per nil:NilClass)
/var/www/discourse/lib/auth/default_current_user_provider.rb:54:in `current_user`

Backtrace

/var/www/discourse/lib/auth/default_current_user_provider.rb:54:in 'current_user'
/var/www/discourse/lib/homepage_constraint.rb:12:in 'matches?'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/routing/mapper.rb:40:in 'block in matches?'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/routing/mapper.rb:39:in 'all?'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/routing/mapper.rb:39:in 'matches?'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/routing/route_set.rb:869:in 'block in recognize_path_with_request'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/journey/router.rb:75:in 'block in recognize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/journey/router.rb:68:in 'each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/journey/router.rb:68:in 'recognize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/routing/route_set.rb:859:in 'recognize_path_with_request'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/routing/route_set.rb:855:in 'recognize_path'
/var/www/discourse/lib/discourse.rb:299:in 'route_for'
/var/www/discourse/app/models/topic_link.rb:182:in 'ensure_entry_for'
/var/www/discourse/app/models/topic_link.rb:130:in 'block (2 levels) in extract_from'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/database_statements.rb:265:in 'transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/transactions.rb:212:in 'transaction'
/var/www/discourse/app/models/topic_link.rb:128:in 'block in extract_from'
/var/www/discourse/app/models/topic_link.rb:126:in 'each'
/var/www/discourse/app/models/topic_link.rb:126:in 'extract_from'
/var/www/discourse/lib/post_creator.rb:559:in 'extract_links'
/var/www/discourse/lib/post_creator.rb:177:in 'block in create'
/var/www/discourse/lib/post_creator.rb:357:in 'block (2 levels) in transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/database_statements.rb:267:in 'block in transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/transaction.rb:239:in 'block in within_new_transaction'
/usr/local/rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/monitor.rb:230:in 'mon_synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/transaction.rb:236:in 'within_new_transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/database_statements.rb:267:in 'transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/transactions.rb:212:in 'transaction'
/var/www/discourse/lib/post_creator.rb:356:in 'block in transaction'
/var/www/discourse/lib/distributed_mutex.rb:42:in 'synchronize'
/var/www/discourse/lib/distributed_mutex.rb:12:in 'synchronize'
/var/www/discourse/lib/post_creator.rb:355:in 'transaction'
/var/www/discourse/lib/post_creator.rb:171:in 'create'
/var/www/discourse/lib/new_post_manager.rb:248:in 'perform_create_post'
/var/www/discourse/lib/new_post_manager.rb:191:in 'perform'
/var/www/discourse/app/controllers/posts_controller.rb:188:in 'create'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_controller/metal/basic_implicit_render.rb:6:in 'send_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/abstract_controller/base.rb:194:in 'process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_controller/metal/rendering.rb:30:in 'process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/abstract_controller/callbacks.rb:42:in 'block in process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/callbacks.rb:132:in 'run_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/abstract_controller/callbacks.rb:41:in 'process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_controller/metal/rescue.rb:22:in 'process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_controller/metal/instrumentation.rb:34:in 'block in process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/notifications.rb:168:in 'block in instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/notifications/instrumenter.rb:23:in 'instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/notifications.rb:168:in 'instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_controller/metal/instrumentation.rb:32:in 'process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_controller/metal/params_wrapper.rb:256:in 'process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/railties/controller_runtime.rb:24:in 'process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/abstract_controller/base.rb:134:in 'process'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionview-5.2.3/lib/action_view/rendering.rb:32:in 'process'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.0.2/lib/mini_profiler/profiling_methods.rb:78:in 'block in profile_method'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_controller/metal.rb:191:in 'dispatch'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_controller/metal.rb:252:in 'dispatch'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/routing/route_set.rb:52:in 'dispatch'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/routing/route_set.rb:34:in 'serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/journey/router.rb:52:in 'block in serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/journey/router.rb:35:in 'each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/journey/router.rb:35:in 'serve'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/routing/route_set.rb:840:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-protection-2.0.5/lib/rack/protection/frame_options.rb:31:in 'call'
/var/www/discourse/lib/middleware/omniauth_bypass_middleware.rb:32:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/tempfile_reaper.rb:15:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/conditional_get.rb:38:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/head.rb:12:in 'call'
/var/www/discourse/lib/content_security_policy/middleware.rb:12:in 'call'
/var/www/discourse/lib/middleware/anonymous_cache.rb:220:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/session/abstract/id.rb:232:in 'context'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/session/abstract/id.rb:226:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/middleware/cookies.rb:670:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/middleware/callbacks.rb:28:in 'block in call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/callbacks.rb:98:in 'run_callbacks'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/middleware/callbacks.rb:26:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/middleware/debug_exceptions.rb:61:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/middleware/show_exceptions.rb:33:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/logster-2.3.0/lib/logster/middleware/reporter.rb:30:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/rack/logger.rb:38:in 'call_app'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/rack/logger.rb:28:in 'call'
/var/www/discourse/config/initializers/100-quiet_logger.rb:18:in 'call'
/var/www/discourse/config/initializers/100-silence_logger.rb:31:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/middleware/remote_ip.rb:81:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/middleware/request_id.rb:27:in 'call'
/var/www/discourse/lib/middleware/enforce_hostname.rb:17:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/method_override.rb:22:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.3/lib/action_dispatch/middleware/executor.rb:14:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/sendfile.rb:111:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.0.2/lib/mini_profiler/profiler.rb:171:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/message_bus-2.2.0/lib/message_bus/rack/middleware.rb:57:in 'call'
/var/www/discourse/lib/middleware/request_tracker.rb:163:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/engine.rb:524:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/railtie.rb:190:in 'public_send'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/railtie.rb:190:in 'method_missing'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/urlmap.rb:68:in 'block in call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/urlmap.rb:53:in 'each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/urlmap.rb:53:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/puma-3.12.1/lib/puma/configuration.rb:227:in 'call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/puma-3.12.1/lib/puma/server.rb:660:in 'handle_request'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/puma-3.12.1/lib/puma/server.rb:474:in 'process_client'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/puma-3.12.1/lib/puma/server.rb:334:in 'block in run'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/puma-3.12.1/lib/puma/thread_pool.rb:135:in 'block in spawn_thread'

Env

hostname	[d585a64b75c4, 63b1df94653a]
process_id	11230
application_version	af192ff9d576abd451b30dc3dcbafa1d2b52a254
HTTP_HOST	beta.wer-weiss-was.de
REQUEST_URI	/posts
REQUEST_METHOD	POST
HTTP_USER_AGENT	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36
HTTP_ACCEPT	application/json, text/javascript, */*; q=0.01
HTTP_REFERER	https://beta.wer-weiss-was.de/t/topic-slug/1234567/37
HTTP_X_FORWARDED_FOR	123.123.123.123:12345, 123.123.123.123
HTTP_X_REAL_IP	123.123.123.123
username	my-username

params	
raw	Testo contenente il link al TLD senza percorso
unlist_topic	false
category	603
topic_id	1234567
is_warning	false
whisper	false
archetype	regular
typing_duration_msecs	77700
composer_open_duration_msecs	15485
featured_link	
shared_draft	false
reply_to_post_number	39
nested_post	true

Sarebbe ottimo se qualcuno avesse un’idea sul perché ciò accada.

Cordiali saluti
Sascha Hofmann

2

Come hai postato, il codice cerca un percorso dopo il dominio.

Forse una barra finale lo soddisferebbe?
[homepage](https://www.my-forum.com/)

3

Purtroppo no. Ottima idea, ma mi avrebbe sorpreso. Soprattutto perché qualsiasi altro URL funziona bene senza barra finale, come [homepage](https://google.com).

4

Stai utilizzando plugin di terze parti?

5

Ciao,

scusa per il ritardo nella risposta.
Sì, stiamo utilizzando alcuni plugin (di terze parti). Ecco l’elenco:
discourse-adplugin
discourse-solved
discourse-user-notes
procourse-static-pages
e alcuni sviluppati internamente che abbiamo già disattivato.

6

Ciao,

per concludere la questione. Abbiamo individuato l’errore in una patch applicata. Abbiamo riscontrato lo stesso problema descritto in questo argomento, poiché stiamo utilizzando Azure Application Gateway V1.
Nel seguente post ho descritto cosa abbiamo fatto per aggirare il problema.

Comunque, sembra che request.ip sia nil se si crea un link al proprio hostname, quindi la nostra soluzione alternativa non funziona. L’abbiamo risolta avvolgendola in un blocco begin…rescue…end come segue:

begin
  ip_port_split = request.ip.split(':')
  ip_only = ip_port_split.first
rescue
  ip_only = request.ip
end

Non vediamo l’ora del prossimo aggiornamento/rilascio di rack, poiché dovrebbe/gestirà correttamente le intestazioni x-forwarded-for.

Grazie per il vostro tempo e cordiali saluti.
Sascha