Issue #7833 has been updated by usa (Usaku NAKAMURA).

Status changed from Open to Assigned
Assignee set to seki (Masatoshi Seki)


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Bug #7833: DRb has problems with BasicObject
https://bugs.ruby-lang.org/issues/7833#change-36222

Author: prijutme4ty (Ilya Vorontsov)
Status: Assigned
Priority: Normal
Assignee: seki (Masatoshi Seki)
Category: lib
Target version: 1.9.3
ruby -v: 1.9.3p374


I realized some problems with DRb and BasicObject
1) I cannot create front object of BasicObject class because DRb tries to call private_methods class

2) Call to DRb can't return instance of BasicObject class, instead it hangs. 

# serv.rb:
require 'drb'
$drb_uri = 'druby://localhost:1111'
class Front
  def func
   BasicObject.new
  end
end
DRb.start_service($drb_uri, Front.new)
DRb.thread.join

# conn.rb:
require 'drb'
$drb_uri = 'druby://localhost:1111'
DRb.start_service
conn = DRbObject.new_with_uri($drb_uri)
p conn.func


When after a while (tens of seconds) I break the server, client shows me trace:

>conn.rb
C:/Ruby193/lib/ruby/1.9.1/drb/drb.rb:570:in `load': connection closed (DRb::DRbConnError)
        from C:/Ruby193/lib/ruby/1.9.1/drb/drb.rb:632:in `recv_reply'
        from C:/Ruby193/lib/ruby/1.9.1/drb/drb.rb:918:in `recv_reply'
        from C:/Ruby193/lib/ruby/1.9.1/drb/drb.rb:1197:in `send_message'
        from C:/Ruby193/lib/ruby/1.9.1/drb/drb.rb:1088:in `block (2 levels) in method_missing'
        from C:/Ruby193/lib/ruby/1.9.1/drb/drb.rb:1172:in `open'
        from C:/Ruby193/lib/ruby/1.9.1/drb/drb.rb:1087:in `block in method_missing'
        from C:/Ruby193/lib/ruby/1.9.1/drb/drb.rb:1105:in `with_friend'
        from C:/Ruby193/lib/ruby/1.9.1/drb/drb.rb:1086:in `method_missing'
        from D:/programming/iogen_tools/website/server/tmp/conn.rb:5:in `<main>'



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