# SendOptions

**Kind:** Interface

**Source:** [`src/helper/websocket/index.ts`](https://github.com/honojs/hono/blob/main/src/helper/websocket/index.ts#L63)

**Part of:** [Helper](subsystem-src-helper)

Options for sending message

`SendOptions` defines options applied when sending a WebSocket message. Its `compress` property controls whether message compression is enabled for the send operation.

## Properties

| Property | Type |
|---|---|
| `compress` | `boolean` |

## Diagram

```mermaid
graph LR
  Message[WebSocket message] --> Options[SendOptions]
  Options --> Compress[compress: boolean]
  Options --> Send[Send operation]
```

## Usage

```ts
import type { SendOptions } from "./helper/websocket";

const options: SendOptions = {
  compress: true,
};

// Pass `options` to the WebSocket message send operation.
```

## AI Coding Instructions

- Set `compress` explicitly when constructing `SendOptions`.
- Keep this interface limited to message-send configuration.
- Use `SendOptions` as a type annotation for options passed into WebSocket send code.
- Do not treat `compress` as message content; it only controls send behavior.