The Sequence message is used in both Recoverable (CME to customer) and Idempotent (customer to CME) flows.
35=Sequence
| Tag | Name | Binary Type | Binary Length | Req | Enumeration | Description |
|---|---|---|---|---|---|---|
| 39001 | UUID | uInt64 | 8 | Y | Matches Establish.UUID used to establish the connection. | |
| 39013 | NextSeqNo | uInt32 | 4 | Y | Next expected message sequence number. On the primary connection, the next expected message sequence number represents the sequence number of the next business message to be sent from the customer to CME or from CME to the customer. On the backup connection, this will be set to 0. Upon failover, the newly elected primary will send a Sequence message with NextSeqNo=the last message sequence number used by the primary + 1. | |
| 39010 | FaultToleranceIndicator | FTI | 1 | N | 0=Backup 1=Primary | Indicates whether the connection is the primary or backup. Upon failover, the newly elected primary will send a Sequence message with Status=1. Not required to be sent from customer to CME. |
39016 | KeepAliveIntervalLapsed | KeepAliveLapsed | 1 | Y | 0=Not Lapsed 1=Lapsed | Indicates whether one Keep Alive interval has lapsed without any message received. If an additional KeepAliveInterval lapses with no message received, then the socket connection will be disconnected. |