3.6.7.5 Begin Rollback

The Begin Rollback event MUST be signaled with the following arguments:

• An Enlistment object

 If the Begin Rollback event is signaled, the transaction manager MUST perform the following actions:

• If the connection of the provided enlistment is of type CONNTYPE_TXUSER_VOTER:

  • Send a TXUSER_STATUS_MTAG_ABORTED message using the connection.

  • Set the connection state to Ended.

• Otherwise, if the connection of the provided enlistment is of type CONNTYPE_TXUSER_ENLISTMENT:

  • If the connection state is Idle:

    • Signal the Enlistment Rollback Complete event on the Core Transaction Manager Facet with the provided Enlistment object.

  • Otherwise:

    • If the connection state is Active or Prepared:

      • Send a TXUSER_ENLISTMENT_MTAG_ABORTREQ message using the connection.

      • Set the connection state to Awaiting Abort Response.

    • Otherwise, if the connection state is Awaiting Prepare Response:

      • Set the connection state to Awaiting Prepare Response Aborted.

• Otherwise, if the connection of the provided enlistment is of type CONNTYPE_TXUSER_REENLIST:

  • If the connection state is Processing Reenlist Request:

    • Send a TXUSER_REENLIST_MTAG_REENLIST_ABORTED message using the connection.

    • Set the connection state to Ended.

  • Otherwise, ignore the signal.