# FallbackCarrier

URL: https://www.caprid.com/docs/reference/typescript/caprid/relay-websocket/type-aliases/fallbackcarrier/

```ts
type FallbackCarrier = "webtransport" | "websocket";
```

Defined in: [relay-sdks/ts/packages/relay-websocket/src/fallback.ts:13](https://github.com/caprids/relay-sdks/blob/main/ts/packages/relay-websocket/src/fallback.ts#L13)

Which transport a [FallbackTransport](https://www.caprid.com/docs/reference/typescript/caprid/relay-websocket/interfaces/fallbacktransport/) runs on.