How to get access to Form objects in WebSocketBehavior class ?

I am using WebSocket server in a Form application. Like below:

public Form1()
        {
            InitializeComponent();
  
            var wsServer = new WebSocketServer("ws://127.0.0.1");            
            wsServer.AddWebSocketService<WSB>("/rec");
            wsServer.Start();                        
        }

And the WSB:

public class WSB : WebSocketBehavior
        {                         
            protected override void OnOpen()
            {
                //base.OnOpen();
                Console.WriteLine("[Agent INFO]  Connected");                
                IPAddress clientIPAddress = Context.UserEndPoint.Address;               
            }

            protected override void OnMessage(MessageEventArgs e)
            {                
                Console.WriteLine("[Agent INFO]  Message Received");                                
            }                        
        }

And I want to write clientIPAddress to Form1.label.Text. How can I get access to Form1 objects in WSB class' methods ?

Start with the Form1 constructor and the WSB WebSocketBehavior callbacks shown in the issue, then inspect how websocket-sharp invokes OnOpen and OnMessage. Determine the intended boundary between the WebSocketBehavior instance and the Form1 UI, including what completion means for updating label.Text safely.