brominet_curl.sh

#!/bin/sh
curl --url http://localhost:50000 -d       \
"<plist version=\"1.0\">                   \
 <dict>                                    \
     <key>command</key>                    \
     <string>simulateTouch</string>        \
     <key>viewXPath</key>                  \
     <string>//UIToolbarButton[1]</string> \
 </dict>                                   \
 </plist>"

brominet_raw.xml

<plist version="1.0">
<array>
    <dict>
        <key>command</key>
        <string>simulateTouch</string>
        <key>viewXPath</key>
        <string>//UIToolbarButton[1]</string>
    </dict>
</array>
</plist>

brominet_tagz.rb

require 'tagz'

command = Tagz.tagz do
  plist_(:version => 1.0) do
    dict_ do
      key_    'command'
      string_ 'simulateTouch'
      key_    'viewXPath'
      string_ '//UIToolbarButton[1]</string>'
    end
  end
end

Net::HTTP.post_quick \
  'http://localhost:50000/', command