Inbound protocol message flow

The normal flow of inbound messages inside the protocol thread is:

  1. Protocol messages arrive from the protocol driver.
  2. The engine places the protocol messages into the inbound pre-TPS queue.
  3. The messages undergo TPS processing in the appropriate inbound TPS.
  4. The engine places the messages into the inbound post-TPS queue.
  5. The engine sends the messages to the translation thread within the same process.