The Resend Request <2> message can be sent by either side to initiate the retransmission of messages. It can be used if a sequence number gap is detected, or if either side lost a message, or as a function of the initialization process.
| Tag | Field Name | Data Type | Req’d | Comments |
|---|---|---|---|---|
| Standard header | Y | MsgType 35=2 | ||
| 7 | BeginSeqNo | int | Y | Sequence number of first message in range to be resent. |
| 16 | EndSeqNo | int | Y | Sequence number of last message in range to be resent. Set EndSeqNo to 0 if all messages subsequent to BeginSeqNo are required. |
| Standard trailer | Y |