protocol TCP-CL-API
  description   Internal TCP Client Protocol
  message tcp-cl-connect API call to initiate a connection towards the server.
  message tcp-cl-connected Informs APP that connnection succeeded.
  message tcp-cl-failed Informs APP that connection failed
  message tcp-cl-close API call to initate session shutdown.
  message tcp-cl-closed Informs APP that connection is closed.
  message tcp-cl-send API calls to send date to the server.
  message tcp-cl-receive Return received data the app.