Non platform agnostic socket code

[dbousamra]

2017-01-27 13:06:16 +1100 [info]: shutting down output type="logmatic" plugin_id="object:3fe249d244b4"                                                                                                                                                   │localhost:8888/logmatic.domsdf
2017-01-27 13:06:16 +1100 [warn]: before_shutdown failed error="uninitialized constant Socket::SOL_TCP"                                                                                                                                                  │~/C/S/II ❯❯❯ curl -X POST -d 'j
  2017-01-27 13:06:16 +1100 [warn]: /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluent-plugin-logmatic-0.8.3/lib/fluent/plugin/out_logmatic.rb:58:in `client'                                                                                        │son={"json":"message"}' http://
  2017-01-27 13:06:16 +1100 [warn]: /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluent-plugin-logmatic-0.8.3/lib/fluent/plugin/out_logmatic.rb:106:in `block in send_to_logmatic'                                                                    │localhost:8888/logmatic.domsdf
  2017-01-27 13:06:16 +1100 [warn]: /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluent-plugin-logmatic-0.8.3/lib/fluent/plugin/out_logmatic.rb:105:in `each'                                                                                         │~/C/S/II ❯❯❯ curl -X POST -d 'j
  2017-01-27 13:06:16 +1100 [warn]: /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluent-plugin-logmatic-0.8.3/lib/fluent/plugin/out_logmatic.rb:105:in `send_to_logmatic'                                                                             │son={"json":"message"}' http://
  2017-01-27 13:06:16 +1100 [warn]: /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluent-plugin-logmatic-0.8.3/lib/fluent/plugin/out_logmatic.rb:88:in `write'                                                                                         │localhost:8888/logmatic.domsdf
  2017-01-27 13:06:16 +1100 [warn]: /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.19/lib/fluent/buffer.rb:345:in `write_chunk'                                                                                                            │~/C/S/II ❯❯❯ curl -X POST -d 'j
  2017-01-27 13:06:16 +1100 [warn]: /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.19/lib/fluent/buffer.rb:324:in `pop'                                                                                                                    │son={"json":"message"}' http://
  2017-01-27 13:06:16 +1100 [warn]: /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.19/lib/fluent/plugin/buf_memory.rb:94:in `block in before_shutdown'                                                                                     │localhost:8888/logmatic.domsdf
  2017-01-27 13:06:16 +1100 [warn]: /opt/td-agent/embedded/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'                                                                                                                                            │~/C/S/II ❯❯❯ curl -X POST -d 'j
  2017-01-27 13:06:16 +1100 [warn]: /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.19/lib/fluent/plugin/buf_memory.rb:90:in `before_shutdown'                                                                                              │son={"json":"message"}' http://
  2017-01-27 13:06:16 +1100 [warn]: /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.19/lib/fluent/output.rb:396:in `before_shutdown'                                                                                                        │localhost:8888/logmatic.domsdf
  2017-01-27 13:06:16 +1100 [warn]: /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.19/lib/fluent/output.rb:160:in `block in run'                                                                                                           │~/C/S/II ❯❯❯ curl -X POST -d 'j
  2017-01-27 13:06:16 +1100 [warn]: /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.19/lib/fluent/output.rb:159:in `synchronize'                                                                                                            │son={"json":"message"}' http://
  2017-01-27 13:06:16 +1100 [warn]: /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.19/lib/fluent/output.rb:159:in `run'

I receive this error when trying to use the plugin on OSX. The error: uninitialized constant Socket::SOL_TCP seems to relate to lwoggardner/zkruby#2