SSH connection fails with "undefined method `send_pending' for nil:NilClass
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                 Key: JRUBY-5867
                 URL: http://jira.codehaus.org/browse/JRUBY-5867
             Project: JRuby
          Issue Type: Bug
          Components: OpenSSL
    Affects Versions: JRuby 1.6.2
         Environment: net-ssh 2.1.4 (but also earlier 2.0 versions)
net-ssh-gateway 1.1.0 (but also 1.0.1)
bouncy-castle-java (1.5.0146.1)
jruby-openssl (0.7.4)
            Reporter: Anders Bengtsson


I have a Capistrano script that connects to a remote server using SSH via a 
gateway server. On MRI (1.9.2, 1.8.7) it works, but on JRuby 1.6.2 the SSH 
connection fails with this (names redacted):

  * establishing connection to gateway `"x...@xxxx.se"'
  * Creating gateway using x...@xxxx.se
  * establishing connection to `yyyy@yyyy' via gateway
NoMethodError: undefined method `send_pending' for nil:NilClass
           postprocess at 
/Users/anders.bengtsson/.rvm/gems/jruby-1.6.2/gems/net-ssh-2.1.4/lib/net/ssh/connection/session.rb:236
                  each at org/jruby/RubyArray.java:1602
           postprocess at 
/Users/anders.bengtsson/.rvm/gems/jruby-1.6.2/gems/net-ssh-2.1.4/lib/net/ssh/connection/session.rb:235
               process at 
/Users/anders.bengtsson/.rvm/gems/jruby-1.6.2/gems/net-ssh-2.1.4/lib/net/ssh/connection/session.rb:203
  initiate_event_loop! at 
/Users/anders.bengtsson/.rvm/gems/jruby-1.6.2/gems/net-ssh-gateway-1.1.0/lib/net/ssh/gateway.rb:198
  initiate_event_loop! at 
/Users/anders.bengtsson/.rvm/gems/jruby-1.6.2/gems/net-ssh-gateway-1.1.0/lib/net/ssh/gateway.rb:197
                  call at org/jruby/RubyProc.java:268
                  call at org/jruby/RubyProc.java:232

It seems JRuby-related, but also SSH-related?


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