Link zur eigenen Domain führt zu „Internal Server Error"

Unterstützung
1

Hallo,

aktuell nutzen wir Discourse v2.3.2 und sind auf ein seltsames Problem gestoßen. Wenn ich ein Thema oder einen Beitrag mit einem Link zur Domain des Forums (ohne Pfad) erstelle, kann ich ihn nicht speichern, da ein Internal Server Error auftritt.

Nehmen wir an, die URL unseres Forums ist https://www.my-forum.com und ich poste etwas wie:
„Bitte werft einen Blick auf unsere [Homepage](https://www.my-forum.com)“

Das Ergebnis sieht dann so aus:

38
382142×1340 178 KB

Sobald ich den Link jedoch zu […] [Homepage](https://www.my-forum.com/latest) oder […] [Homepage](https://www.my-forum.com/categories) ändere, funktioniert alles einwandfrei.

Hier sind die Logs:

Meldung (21-mal gemeldet)

NoMethodError (undefined method `split' for 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	Text containing the link to the tld without path
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

Es wäre toll, wenn jemand eine Idee hätte, warum das passiert.

Mit freundlichen Grüßen
Sascha Hofmann

2

Wie du gepostet hast, sucht der Code nach einem Pfad nach der Domain.

Vielleicht würde ein abschließender Schrägstrich ihn zufriedenstellen?
[Homepage](https://www.my-forum.com/)

3

Leider nicht. Gute Idee, aber es hätte mich überrascht. Besonders, da jede andere URL ganz gut ohne einen schrägen Strich am Ende funktioniert, wie [homepage](https://google.com).

4

Betreibst du irgendwelche Plugins von Drittanbietern?

5

Hallo,

entschuldige bitte meine späte Antwort.
Ja, wir verwenden einige (Drittanbieter-)Plugins. Dies sind die folgenden:
discourse-adplugin
discourse-solved
discourse-user-notes
procourse-static-pages
und einige selbst entwickelte, die wir bereits deaktiviert haben.

6

Hallo,

nur um das abzuschließen. Wir haben den Fehler in einem von uns angewendeten Patch gefunden. Wir hatten dasselbe Problem, wie in diesem Thema beschrieben, da wir Azure Application Gateway V1 verwenden.
In diesem Beitrag habe ich beschrieben, was wir getan haben, um dieses Problem zu umgehen.

Jedenfalls. Es scheint, dass request.ip nil ist, wenn Sie einen Link zu Ihrem eigenen Hostnamen erstellen, sodass unsere Workaround-Lösung versagt. Wir haben es behoben, indem wir es in ein begin…rescue…end-Block eingepackt haben, wie folgt:

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

Wir freuen uns auf das nächste rack-Update/Release, da es diese x-forwarded-for-Header korrekt behandeln sollte/wird.

Vielen Dank für Ihre Zeit und freundliche Grüße,
Sascha