# `ViewstampedReplication.Protocol.Envelope`
[🔗](https://github.com/gsmlg-dev/concord/tree/main/apps/viewstamped_replication/blob/main/lib/viewstamped_replication/protocol/messages.ex#L1)

Versioned, group-scoped protocol message envelope.

# `t`

```elixir
@type t() :: %ViewstampedReplication.Protocol.Envelope{
  configuration_hash: binary() | nil,
  from: term(),
  group_id: term(),
  payload: term(),
  protocol_version: pos_integer()
}
```

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