^ send-msg = message f-name caller-name ->
  log +1 'Entering ' f-name '.[' caller-name '], id: ' message.id

  - send-msg *

  log -1 'Leaving ' f-name '.[' caller-name '], r.id: ' res.id
_
  message : msg-packet-b64
  f-name, caller-name : string
;

