Actor: User Application

Goal: Query the status of a message recently sent.

Description: Query the status of a message recently sent to determine if has completed.

Preconditions:

1. A message was successfully created and transmission has begun.

None

Related Use Cases:

UC18.0 - Send Peer Message

Notes and Issues:

None

Event Flow:

1. The application requests a message to be sent by the engine.
2. The engine begins to send the message.
3. The application queries the status of the message to determine progress.
4. The engine checks if the message transmission has completed.
5. The engine returns the result of the check to the application.

UC28.1 Message doesn't exist

1. The application requests a message to be sent by the engine.
2. The engine begins to send the message.
3. The application queries the status of the message to determine progress.
4. The engine checks if the message transmission has completed.
5. The engine determines that the message doesn't exist or is old and returns the error to the application.

Sequence Diagrams:

Revision History

Name	Date	Reason for Change	Version