Gap Request Message Fields
The Gap Request message is used by a user’s process to request retransmission of a sequenced message (or messages) by one of Cboe’s gap servers.
The Gap Request message for Cboe One is identical to the Multicast Pitch Gap Request message. The Unit field should be set to 0 since the Cboe One feed is not unitized.
| Field | Offset | Length | Value/Type | Description |
|---|---|---|---|---|
| Length | 0 | 1 | Binary | Length of this message including this field. |
| Message Type | 1 | 1 | 0x03 | Gap Request message |
| Unit | 2 | 1 | Binary | Unit that the gap is requested for (0 for Cboe One implementation). |
| Sequence | 3 | 4 | Binary | Sequence of first message (lowest sequence in range). |
| Count | 7 | 2 | Binary | Count of messages requested |
| Total Length = 9 bytes | ||||