ASP.NET Core SignalR is an open-source library that simplifies adding real-time web functionality to apps. Real-time web functionality enables server-side code to push content to clients instantly. It's platform-independent, and can be used on both the command-line and the browser.
final connection =HubConnectionBuilder().withUrl('http://localhost:5000/chatHub', HttpConnectionOptions( logging: (level, message) =>print(message), )).build(); await connection.start(); connection.on('ReceiveMessage', (message){print(message.toString())}); await connection.invoke('SendMessage', args: ['Bob', 'Says hi!']);