Exception in Netbeans when stopping at breakpoint

[MatsGard]

I use the following:
Netbeans 8.0.1
CentOS
ruby-debug-ide-0.4.23.beta9

When stopping at breakpoint the following exception occurs in Netbeans:
java.lang.IllegalStateException: Unexpected event. Expecting variable end tag.value
at org.rubyforge.debugcommons.reader.XmlStreamReader.ensureEndTag(XmlStreamReader.java:41)
at org.rubyforge.debugcommons.reader.VariablesReader.parseVariables(VariablesReader.java:90)
at org.rubyforge.debugcommons.reader.VariablesReader.parse(VariablesReader.java:48)
at org.rubyforge.debugcommons.reader.VariablesReader.readVariables(VariablesReader.java:105)
at org.rubyforge.debugcommons.ReadersSupport.processElement(ReadersSupport.java:156)
at org.rubyforge.debugcommons.ReadersSupport.startXPPLoop(ReadersSupport.java:116)
at org.rubyforge.debugcommons.ReadersSupport.access$200(ReadersSupport.java:44)
[catch] at org.rubyforge.debugcommons.ReadersSupport$XPPLoop.run(ReadersSupport.java:271)

This didn't occur on ruby-debug-ide-0.4.23.beta1.
I tried ruby-debug-ide-0.4.23.beta7 before and I had problems with breakpoints and I think it was same problem. I returned to ruby-debug-ide-0.4.23.beta1 anyway.

[os97673]

could you please try to run ruby debugger in verbose mode and provide its output

[MatsGard]

Yes, but how do I run ruby-debug-ide in verbose mode?
I run my application from Netbeans.

[os97673]

Unfortunately I'm do not know :( I'd suggest you to contact Netbeans' team

[os97673]

you need to pass "--debug" argument to rdebug-ide somehow

[MatsGard]

I have tried to uncomment in ruby-debug-ide-0.4.23.beta1/bin/rdebug-ide:

opts.on("-d", "--debug", "Debug self - prints information for debugging ruby-debug itself") do

Debugger.cli_debug = true

end

But I can't see anything other than the normal stuff in development.log, perhaps it logs somewhere else?

I also sent an error report to Netbeans and perhaps their answer can be a lead:
"User Comments:
dkmd_nielsen: Attempting to debug into a method by calling the method's alias
name. It's been a while since I've encountered this error. The method is new.
The project just initialized a Mercurial database. These module changes are
not yet committed. There is nothing really new about this project I'm working
on, except the above.

GUEST: Waiting for variables to display"

[MatsGard]

Now it worked, the following is logged after stopping at a breakpoint, when I switch to the variables tab:

28024: <breakpoint file="/root/aptilo-webgui/aptilo_webgui/app/views/external_networks/node_groups/index.html.erb" line="1" threadId="4"/>
28024: Stopping Thread #<Thread:0x00000006e221f0> (28024)
28024: Threads equal: true
28024: Processing in control: th l
28024: <threads>
28024: <thread id="1" status="sleep" pid="28024" />
28024: <thread id="4" status="sleep" pid="28024" />
28024: <thread id="5" status="sleep" pid="28024" />
28024: </threads>
28024: Processing in context: w
28024: <frames>
28024: <frame no='1' file='/root/aptilo-webgui/aptilo_webgui/app/views/external_networks/node_groups/index.html.erb' line='1' current='true' />
28024: <frame no='2' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_view/template.rb' line='145' />
28024: <frame no='3' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/notifications.rb' line='125' />
28024: <frame no='4' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_view/template.rb' line='143' />
28024: <frame no='5' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_view/renderer/template_renderer.rb' line='47' />
28024: <frame no='6' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_view/renderer/abstract_renderer.rb' line='38' />
28024: <frame no='7' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/notifications.rb' line='123' />
28024: <frame no='8' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/notifications/instrumenter.rb' line='20' />
28024: <frame no='9' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/notifications.rb' line='123' />
28024: <frame no='10' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_view/renderer/abstract_renderer.rb' line='38' />
28024: <frame no='11' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_view/renderer/template_renderer.rb' line='46' />
28024: <frame no='12' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_view/renderer/template_renderer.rb' line='54' />
28024: <frame no='13' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_view/renderer/template_renderer.rb' line='45' />
28024: <frame no='14' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_view/renderer/template_renderer.rb' line='18' />
28024: <frame no='15' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_view/renderer/renderer.rb' line='36' />
28024: <frame no='16' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_view/renderer/renderer.rb' line='17' />
28024: <frame no='17' file='/usr/share/gems/gems/actionpack-3.2.17/lib/abstract_controller/rendering.rb' line='110' />
28024: <frame no='18' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/streaming.rb' line='225' />
28024: <frame no='19' file='/usr/share/gems/gems/actionpack-3.2.17/lib/abstract_controller/rendering.rb' line='103' />
28024: <frame no='20' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/renderers.rb' line='28' />
28024: <frame no='21' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/compatibility.rb' line='50' />
28024: <frame no='22' file='/usr/share/gems/gems/actionpack-3.2.17/lib/abstract_controller/rendering.rb' line='88' />
28024: <frame no='23' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/rendering.rb' line='16' />
28024: <frame no='24' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/instrumentation.rb' line='40' />
28024: <frame no='25' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/core_ext/benchmark.rb' line='5' />
28024: <frame no='26' file='/usr/share/ruby/benchmark.rb' line='296' />
28024: <frame no='27' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/core_ext/benchmark.rb' line='5' />
28024: <frame no='28' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/instrumentation.rb' line='40' />
28024: <frame no='29' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/instrumentation.rb' line='83' />
28024: <frame no='30' file='/usr/share/gems/gems/activerecord-3.2.17/lib/active_record/railties/controller_runtime.rb' line='24' />
28024: <frame no='31' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/instrumentation.rb' line='39' />
28024: <frame no='32' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/implicit_render.rb' line='10' />
28024: <frame no='33' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/responder.rb' line='232' />
28024: <frame no='34' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/responder.rb' line='160' />
28024: <frame no='35' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/responder.rb' line='153' />
28024: <frame no='36' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/responder.rb' line='146' />
28024: <frame no='37' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/mime_responds.rb' line='239' />
28024: <frame no='38' file='/root/aptilo-webgui/aptilo_webgui/app/controllers/application/response.rb' line='22' />
28024: <frame no='39' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/mime_responds.rb' line='196' />
28024: <frame no='40' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/mime_responds.rb' line='196' />
28024: <frame no='41' file='/root/aptilo-webgui/aptilo_webgui/app/controllers/application/response.rb' line='21' />
28024: <frame no='42' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/implicit_render.rb' line='4' />
28024: <frame no='43' file='/usr/share/gems/gems/actionpack-3.2.17/lib/abstract_controller/base.rb' line='167' />
28024: <frame no='44' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/rendering.rb' line='10' />
28024: <frame no='45' file='/usr/share/gems/gems/actionpack-3.2.17/lib/abstract_controller/callbacks.rb' line='18' />
28024: <frame no='46' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/callbacks.rb' line='503' />
28024: <frame no='47' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/callbacks.rb' line='215' />
28024: <frame no='48' file='/root/aptilo-webgui/aptilo_webgui/app/helpers/edit_modes_helper.rb' line='97' />
28024: <frame no='49' file='/root/aptilo-webgui/aptilo_webgui/app/models/edit_mode.rb' line='85' />
28024: <frame no='50' file='/root/aptilo-webgui/aptilo_webgui/app/helpers/edit_modes_helper.rb' line='95' />
28024: <frame no='51' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/callbacks.rb' line='214' />
28024: <frame no='52' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/callbacks.rb' line='469' />
28024: <frame no='53' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/callbacks.rb' line='405' />
28024: <frame no='54' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/callbacks.rb' line='385' />
28024: <frame no='55' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/callbacks.rb' line='81' />
28024: <frame no='56' file='/usr/share/gems/gems/actionpack-3.2.17/lib/abstract_controller/callbacks.rb' line='17' />
28024: <frame no='57' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/rescue.rb' line='29' />
28024: <frame no='58' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/instrumentation.rb' line='30' />
28024: <frame no='59' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/notifications.rb' line='123' />
28024: <frame no='60' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/notifications/instrumenter.rb' line='20' />
28024: <frame no='61' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/notifications.rb' line='123' />
28024: <frame no='62' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/instrumentation.rb' line='29' />
28024: <frame no='63' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/params_wrapper.rb' line='207' />
28024: <frame no='64' file='/usr/share/gems/gems/activerecord-3.2.17/lib/active_record/railties/controller_runtime.rb' line='18' />
28024: <frame no='65' file='/usr/share/gems/gems/actionpack-3.2.17/lib/abstract_controller/base.rb' line='121' />
28024: <frame no='66' file='/usr/share/gems/gems/actionpack-3.2.17/lib/abstract_controller/rendering.rb' line='45' />
28024: <frame no='67' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal.rb' line='203' />
28024: <frame no='68' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal/rack_delegation.rb' line='14' />
28024: <frame no='69' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_controller/metal.rb' line='246' />
28024: <frame no='70' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/routing/route_set.rb' line='73' />
28024: <frame no='71' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/routing/route_set.rb' line='73' />
28024: <frame no='72' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/routing/route_set.rb' line='36' />
28024: <frame no='73' file='/usr/share/gems/gems/journey-1.0.4/lib/journey/router.rb' line='68' />
28024: <frame no='74' file='/usr/share/gems/gems/journey-1.0.4/lib/journey/router.rb' line='56' />
28024: <frame no='75' file='/usr/share/gems/gems/journey-1.0.4/lib/journey/router.rb' line='56' />
28024: <frame no='76' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/routing/route_set.rb' line='608' />
28024: <frame no='77' file='/usr/share/gems/gems/warden-1.2.3/lib/warden/manager.rb' line='35' />
28024: <frame no='78' file='/usr/share/gems/gems/warden-1.2.3/lib/warden/manager.rb' line='34' />
28024: <frame no='79' file='/usr/share/gems/gems/warden-1.2.3/lib/warden/manager.rb' line='34' />
28024: <frame no='80' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/middleware/best_standards_support.rb' line='17' />
28024: <frame no='81' file='/usr/share/gems/gems/rack-1.4.5/lib/rack/etag.rb' line='23' />
28024: <frame no='82' file='/usr/share/gems/gems/rack-1.4.5/lib/rack/conditionalget.rb' line='25' />
28024: <frame no='83' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/middleware/head.rb' line='14' />
28024: <frame no='84' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/middleware/params_parser.rb' line='21' />
28024: <frame no='85' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/middleware/flash.rb' line='242' />
28024: <frame no='86' file='/usr/share/gems/gems/rack-1.4.5/lib/rack/session/abstract/id.rb' line='210' />
28024: <frame no='87' file='/usr/share/gems/gems/rack-1.4.5/lib/rack/session/abstract/id.rb' line='205' />
28024: <frame no='88' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/middleware/cookies.rb' line='341' />
28024: <frame no='89' file='/usr/share/gems/gems/activerecord-3.2.17/lib/active_record/query_cache.rb' line='64' />
28024: <frame no='90' file='/usr/share/gems/gems/activerecord-3.2.17/lib/active_record/connection_adapters/abstract/connection_pool.rb' line='479' />
28024: <frame no='91' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/middleware/callbacks.rb' line='28' />
28024: <frame no='92' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/callbacks.rb' line='405' />
28024: <frame no='93' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/callbacks.rb' line='405' />
28024: <frame no='94' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/callbacks.rb' line='385' />
28024: <frame no='95' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/callbacks.rb' line='81' />
28024: <frame no='96' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/middleware/callbacks.rb' line='27' />
28024: <frame no='97' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/middleware/reloader.rb' line='65' />
28024: <frame no='98' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/middleware/remote_ip.rb' line='31' />
28024: <frame no='99' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/middleware/debug_exceptions.rb' line='16' />
28024: <frame no='100' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/middleware/show_exceptions.rb' line='56' />
28024: <frame no='101' file='/usr/share/gems/gems/railties-3.2.17/lib/rails/rack/logger.rb' line='32' />
28024: <frame no='102' file='/usr/share/gems/gems/railties-3.2.17/lib/rails/rack/logger.rb' line='16' />
28024: <frame no='103' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/tagged_logging.rb' line='22' />
28024: <frame no='104' file='/usr/share/gems/gems/railties-3.2.17/lib/rails/rack/logger.rb' line='16' />
28024: <frame no='105' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/middleware/request_id.rb' line='22' />
28024: <frame no='106' file='/usr/share/gems/gems/rack-1.4.5/lib/rack/methodoverride.rb' line='21' />
28024: <frame no='107' file='/usr/share/gems/gems/rack-1.4.5/lib/rack/runtime.rb' line='17' />
28024: <frame no='108' file='/usr/share/gems/gems/activesupport-3.2.17/lib/active_support/cache/strategy/local_cache.rb' line='72' />
28024: <frame no='109' file='/usr/share/gems/gems/rack-1.4.5/lib/rack/lock.rb' line='15' />
28024: <frame no='110' file='/usr/share/gems/gems/actionpack-3.2.17/lib/action_dispatch/middleware/static.rb' line='63' />
28024: <frame no='111' file='/usr/share/gems/gems/railties-3.2.17/lib/rails/engine.rb' line='484' />
28024: <frame no='112' file='/usr/share/gems/gems/railties-3.2.17/lib/rails/application.rb' line='231' />
28024: <frame no='113' file='/usr/share/gems/gems/rack-1.4.5/lib/rack/content_length.rb' line='14' />
28024: <frame no='114' file='/usr/share/gems/gems/railties-3.2.17/lib/rails/rack/log_tailer.rb' line='17' />
28024: <frame no='115' file='/usr/share/gems/gems/rack-1.4.5/lib/rack/handler/webrick.rb' line='59' />
28024: <frame no='116' file='/usr/share/ruby/webrick/httpserver.rb' line='138' />
28024: <frame no='117' file='/usr/share/ruby/webrick/httpserver.rb' line='94' />
28024: <frame no='118' file='/usr/share/ruby/webrick/server.rb' line='295' />
28024: </frames>
28024: Processing in context: frame 1
28024: Selected frame no 0
28024: Processing in context:  v l
28024: <variables>
28024: <variable name="self" compactValue="#&lt;#&lt;Class:0x00000006c60600&gt;:0x00000006c68d28&gt;" kind="local" value="#&lt;#&lt;Class:0x00000006c60600&gt;:0x00000006c68d28&gt;" type="#<Class:0x00000006c60600>" hasChildren="true" objectId="+0x3634694">
28024: <value><![CDATA[#&lt;#&lt;Class:0x00000006c60600&gt;:0x00000006c68d28&gt;]]></value>
28024: </variable>
28024: <variable name="_old_output_buffer" kind="local"/>
28024: <variable name="_old_virtual_path" kind="local"/>
28024: <variable name="local_assigns" compactValue="{}" kind="local" value="Empty Hash" type="Hash" hasChildren="false" objectId="+0x363b048">
28024: <value><![CDATA[Empty Hash]]></value>
28024: </variable>
28024: <variable name="output_buffer" kind="local"/>
28024: </variables>
28024: INTERNAL ERROR!!! Connection reset by peer

28024: <error>
28024: <error>

[os97673]

We have extended the protocol (variable node contains value sub-node) which is supposed to be compatible from xml point of view but debugcommons (which is used by Netbeans) is not prepared for this change. So you should either use 0.4.23.beta1 or ask Netbeans team to fix debugcommons (I will be happy to help them if they need such help)