@loopback/docs

--- lang: en title: 'API docs: socketio.socketioapplication' 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.html ---  [Home](./index.md) > [@loopback/socketio](./socketio.md) > [SocketIoApplication](./socketio.socketioapplication.md) ## SocketIoApplication class **Signature:** ```typescript export declare class SocketIoApplication extends Application ``` **Extends:** [Application](./core.application.md) ## Constructors <table><thead><tr><th> Constructor </th><th> Modifiers </th><th> Description </th></tr></thead> <tbody><tr><td markdown="1"> [(constructor)(config)](./socketio.socketioapplication._constructor_.md) </td><td markdown="1"> </td><td markdown="1"> Constructs a new instance of the `SocketIoApplication` class </td></tr> </tbody></table> ## Properties <table><thead><tr><th> Property </th><th> Modifiers </th><th> Type </th><th> Description </th></tr></thead> <tbody><tr><td markdown="1"> [socketServer](./socketio.socketioapplication.socketserver.md) </td><td markdown="1"> `readonly` </td><td markdown="1"> [SocketIoServer](./socketio.socketioserver.md) </td><td markdown="1"> The main Socket server instance providing Socket connections for this application. </td></tr> </tbody></table> ## Methods <table><thead><tr><th> Method </th><th> Modifiers </th><th> Description </th></tr></thead> <tbody><tr><td markdown="1"> [server(server, name)](./socketio.socketioapplication.server.md) </td><td markdown="1"> </td><td markdown="1"> </td></tr> </tbody></table>