NotImplementedError (seulement hijack partiel est pris en charge.) À l'aide message_bus

Question

Je suis juste ajouter la pierre précieuse à la Gemfile et de l'écriture à la console js:

MessageBus.subscribe('/my_channel', function(data){ 
    alert(data); 
}); 

il lance:

Started POST "/message-bus/4700f3c66b254e31875de6caeba011df/poll" for 127.0.0.1 at 2016-04-11 11:32:49 -0300 
** [Airbrake] Notice was not sent due to configuration:   
    Environment Monitored? false   
    API key set? false 

NotImplementedError (only partial hijack is supported.): 
    rack (1.6.4) lib/rack/handler/webrick.rb:76:in `block in service' 
    /home/alter/.rvm/gems/ruby-2.2.2@project/bundler/gems/message_bus-7a93b755b456/lib/message_bus/rack/middleware.rb:141:in `call' 
    /home/alter/.rvm/gems/ruby-2.2.2@project/bundler/gems/message_bus-7a93b755b456/lib/message_bus/rack/middleware.rb:141:in `call' 
    rack (1.6.4) lib/rack/session/abstract/id.rb:225:in `context' 
    rack (1.6.4) lib/rack/session/abstract/id.rb:220:in `call' 
    actionpack (4.2.1) lib/action_dispatch/middleware/cookies.rb:560:in `call' 
    activerecord (4.2.1) lib/active_record/query_cache.rb:36:in `call' 
    activerecord (4.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:649:in `call' 
    activerecord (4.2.1) lib/active_record/migration.rb:378:in `call' 
    actionpack (4.2.1) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call' 
    activesupport (4.2.1) lib/active_support/callbacks.rb:88:in `call' 
    activesupport (4.2.1) lib/active_support/callbacks.rb:88:in `_run_callbacks' 
    activesupport (4.2.1) lib/active_support/callbacks.rb:776:in `_run_call_callbacks' 
    activesupport (4.2.1) lib/active_support/callbacks.rb:81:in `run_callbacks' 
    actionpack (4.2.1) lib/action_dispatch/middleware/callbacks.rb:27:in `call' 
    actionpack (4.2.1) lib/action_dispatch/middleware/reloader.rb:73:in `call' 
    actionpack (4.2.1) lib/action_dispatch/middleware/remote_ip.rb:78:in `call' 
    airbrake (4.3.6) lib/airbrake/rails/middleware.rb:13:in `call' 
    actionpack (4.2.1) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call' 
    web-console (2.3.0) lib/web_console/middleware.rb:28:in `block in call' 
    web-console (2.3.0) lib/web_console/middleware.rb:18:in `catch' 
    web-console (2.3.0) lib/web_console/middleware.rb:18:in `call' 
    actionpack (4.2.1) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call' 
    railties (4.2.1) lib/rails/rack/logger.rb:38:in `call_app' 
    railties (4.2.1) lib/rails/rack/logger.rb:20:in `block in call' 
    activesupport (4.2.1) lib/active_support/tagged_logging.rb:68:in `block in tagged' 
    activesupport (4.2.1) lib/active_support/tagged_logging.rb:26:in `tagged' 
    activesupport (4.2.1) lib/active_support/tagged_logging.rb:68:in `tagged' 
    railties (4.2.1) lib/rails/rack/logger.rb:20:in `call' 
    quiet_assets (1.1.0) lib/quiet_assets.rb:27:in `call_with_quiet_assets' 
    request_store (1.3.0) lib/request_store/middleware.rb:9:in `call' 
    actionpack (4.2.1) lib/action_dispatch/middleware/request_id.rb:21:in `call' 
    rack (1.6.4) lib/rack/methodoverride.rb:22:in `call' 
    rack (1.6.4) lib/rack/runtime.rb:18:in `call' 
    activesupport (4.2.1) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call' 
    rack (1.6.4) lib/rack/lock.rb:17:in `call' 
    actionpack (4.2.1) lib/action_dispatch/middleware/static.rb:113:in `call' 
    rack (1.6.4) lib/rack/sendfile.rb:113:in `call' 
    airbrake (4.3.6) lib/airbrake/user_informer.rb:16:in `_call' 
    airbrake (4.3.6) lib/airbrake/user_informer.rb:12:in `call' 
    railties (4.2.1) lib/rails/engine.rb:518:in `call' 
    railties (4.2.1) lib/rails/application.rb:164:in `call' 
    rack (1.6.4) lib/rack/lock.rb:17:in `call' 
    rack (1.6.4) lib/rack/content_length.rb:15:in `call' 
    rack (1.6.4) lib/rack/handler/webrick.rb:88:in `service' 
    /home/alter/.rvm/rubies/ruby-2.2.2/lib/ruby/2.2.0/webrick/httpserver.rb:138:in `service' 
    /home/alter/.rvm/rubies/ruby-2.2.2/lib/ruby/2.2.0/webrick/httpserver.rb:94:in `run' 
    /home/alter/.rvm/rubies/ruby-2.2.2/lib/ruby/2.2.0/webrick/server.rb:294:in `block in start_thread' 


    Rendered /home/alter/.rvm/gems/ruby-2.2.2@project/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/_source.erb (1.5ms) 
    Rendered /home/alter/.rvm/gems/ruby-2.2.2@project/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/_trace.text.erb (0.4ms) 
    Rendered /home/alter/.rvm/gems/ruby-2.2.2@project/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.text.erb (0.6ms) 
    Rendered /home/alter/.rvm/gems/ruby-2.2.2@project/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/diagnostics.text.erb (14.4ms) 

Je m baser sur le maître pour cela:

GIT 
    remote: git://github.com/SamSaffron/message_bus.git 
    revision: 7a93b755b4568becb3ef87ed8053aa3e4c5346a4 
    branch: master 
    specs: 
    message_bus (2.0.0.beta.6) 
     rack (>= 1.1.3) 

Answer 1

J'utilisais webrick localement. Je viens d'ajouter gem 'puma' à la group :development de la Gemfile et cela a réglé le problème.