[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [local‑first/Protocol](https://evolu.dev/docs/api-reference/common/local-first/Protocol) › MessageType

```ts
const MessageType: {
  Broadcast: 2;
  Request: 0;
  Response: 1;
};
```

Defined in: [packages/common/src/local-first/Protocol.ts:343](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/local-first/Protocol.ts#L343)

## Type Declaration

| Name                                        | Type | Default value | Description                                                         | Defined in                                                                                                                                                                         |
| ------------------------------------------- | ---- | ------------- | ------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| <a id="property-broadcast"></a> `Broadcast` | `2`  | `2`           | Broadcast message from non-initiator (relay) to subscribed clients. | [packages/common/src/local-first/Protocol.ts:349](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/local-first/Protocol.ts#L349) |
| <a id="property-request"></a> `Request`     | `0`  | `0`           | Request message from initiator (client) to non-initiator (relay).   | [packages/common/src/local-first/Protocol.ts:345](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/local-first/Protocol.ts#L345) |
| <a id="property-response"></a> `Response`   | `1`  | `1`           | Response message from non-initiator (relay) to initiator (client).  | [packages/common/src/local-first/Protocol.ts:347](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/local-first/Protocol.ts#L347) |