---
lang: en
title: 'API docs: socketio.socketiocontrollerfactory.getcallback'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/strongloop/loopback-next/tree/master/extensions/socketio
permalink: /doc/en/lb4/apidocs.socketio.socketiocontrollerfactory.getcallback.html
---

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[Home](./index.md) &gt; [@loopback/socketio](./socketio.md) &gt; [SocketIoControllerFactory](./socketio.socketiocontrollerfactory.md) &gt; [getCallback](./socketio.socketiocontrollerfactory.getcallback.md)

## SocketIoControllerFactory.getCallback() method

<b>Signature:</b>

```typescript
getCallback(methodName: string): (...args: unknown[]) => Promise<void>;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  methodName | string |  |

<b>Returns:</b>

(...args: unknown\[\]) =&gt; Promise&lt;void&gt;