# `ExMoQ.Subscription`
[🔗](https://github.com/membraneframework/ex_moq/blob/v0.2.0/lib/subscription.ex#L1)

Parameters of a track subscription.

Fields map onto [`moq_net::track::Subscription`](https://docs.rs/moq-net/0.2.17/moq_net/track/struct.Subscription.html).

  * `priority` - delivery priority, higher is sent first.
    `nil` uses the [hang default](https://docs.rs/hang/0.20.9/hang/catalog/constant.PRIORITY.html)
    for the track's media kind.
  * `group_start` - first group to deliver. `nil` starts at the first group the
    publisher serves: the latest one, or an older one if another subscription
    to the same track in this session requested an earlier `group_start`.
  * `latency_ns` - maps to `latency_max`: how old a non-latest group may get
    before it is skipped. `0` skips immediately, so a catch-up join needs a
    budget covering the backlog. Defaults to `0`.

# `t`

```elixir
@type t() :: %ExMoQ.Subscription{
  group_start: non_neg_integer() | nil,
  latency_ns: non_neg_integer(),
  priority: 0..255 | nil
}
```

---

*Consult [api-reference.md](api-reference.md) for complete listing*