ritmex-bot/docs/grvt/schemas/ws_subscribe_result.md

!!! info "WSSubscribeResult" To ensure you always know if you have missed any payloads, GRVT servers apply the following heuristics to sequence numbers:

• All snapshot payloads will have a sequence number of 0. All delta payloads will have a sequence number of 1+. So its easy to distinguish between snapshots, and deltas
• Num snapshots returned in Response (per stream): You can ensure that you received the right number of snapshots
• First sequence number returned in Response (per stream): You can ensure that you received the first stream, without gaps from snapshots
• Sequence numbers should always monotonically increase by 1. If it decreases, or increases by more than 1. Please reconnect
• Duplicate sequence numbers are possible due to network retries. If you receive a duplicate, please ignore it, or idempotently re-update it.

When subscribing to the same primary selector again, the previous secondary selector will be replaced. See Overview page for more details.

|Name<br>`Lite`|Type|Required<br>`Default`| Description |
|-|-|-|-|
|stream<br>`s` |string|True|The channel to subscribe to (eg: ticker.s / ticker.d)|
|subs<br>`s1` |[string]|True|The list of feeds subscribed to|
|unsubs<br>`u` |[string]|True|The list of feeds unsubscribed from|
|num_snapshots<br>`ns` |[integer]|True|The number of snapshot payloads to expect for each subscribed feed. Returned in same order as `subs`|
|first_sequence_number<br>`fs` |[string]|True|The first sequence number to expect for each subscribed feed. Returned in same order as `subs`|