Shrew

const ws = new WebSocket('wss://dgtaware.com:3000');
ws.onopen = () =>{
     ws.send(JSON.stringify({
          type: 'join',
          room: 'room1',
          username: 'user_1',
          password: 'pwd1',
          company: 'mycompany',
          session_key: '0A2345461111BFE2423FF32423EEE',
     }));
});
ws.onmessage = (event) =>{
     try     {          const msg = JSON.parse(data);
          if (msg.type === 'notification')
          {
               if(msg.hasOwnProperty("message_error") && msg.message_error == "Join Error")
               {
                    return;
               }
               else if(msg.hasOwnProperty("message_username_joined"))
               {
                    //New user joined my room: "+msg.message_username_joined);
               }
               else if(msg.hasOwnProperty("users"))
               {
                    //Users already in the room: "+msg.users);
                    //Websocket is now connected");
               }
          }
          else if (msg.type === 'chat')
          {
               //Chat: ${msg.username}: ${msg.message}
          }
     }
     catch (err)
     {
          //Received invalid JSON: ${err}
     }
});
ws.onclose = () =>{
     //Websocket disconnected
});
ws.onerror = (err) =>{
     //Websocket error:, err.message
});
...

ws.send(JSON.stringify({ type: 'chat', message:"Hello from client" }));