[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [WebSocket](https://evolu.dev/docs/api-reference/common/WebSocket) › CreateWebSocket

```ts
type CreateWebSocket = (
  url: string,
  options?: WebSocketOptions,
) => Task<WebSocket>;
```

Defined in: [packages/common/src/WebSocket.ts:134](https://github.com/evoluhq/evolu/blob/dd96d79f1dbe9a49fa12ce8e0aa7d3d0177795ca/packages/common/src/WebSocket.ts#L134)

[Task](https://evolu.dev/docs/api-reference/common/Task/type-aliases/Task) that creates a [WebSocket](https://evolu.dev/docs/api-reference/common/WebSocket/interfaces/WebSocket).