using WebSocket4Net;
var websocket = new WebSocket("https://localhost/live");
websocket.PackageHandler += (sender, package) =>
{
    Console.WriteLine(package.Message);
}
await websocket.OpenAsync();
websocket.StartReceive();
await websocket.SendAsync("Hello");
//...
await websocket.CloseAsync();

using WebSocket4Net;
var websocket = new WebSocket("https://localhost/live");
await websocket.OpenAsync();
await websocket.SendAsync("Hello");
while (true)
{
    var package = await websocket.ReceiveAsync();
    if (package == null)
        break;
    Console.WriteLine(package.Message);
}
//...
await websocket.CloseAsync();