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lang: en
title: 'API docs: socketio.socketioapplication.socketserver'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/extensions/socketio
permalink: /doc/en/lb4/apidocs.socketio.socketioapplication.socketserver.html
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[Home](./index.md) > [@loopback/socketio](./socketio.md) > [SocketIoApplication](./socketio.socketioapplication.md) > [socketServer](./socketio.socketioapplication.socketserver.md)
## SocketIoApplication.socketServer property
The main Socket server instance providing Socket connections for this application.
<b>Signature:</b>
```typescript
get socketServer(): SocketIoServer;
```