public void ProcessRequest(HttpContext context)
{
if (context.IsWebSocketRequest)
{
var chatUser = new ChatUser
{
UserName = context.Request.QueryString["name"]
};
ChatApp.AddUser(chatUser);
context.AcceptWebSocketRequest(chatUser.HandleWebSocketAsync);
}
}
public async Task HandleWebSocketAsync(WebSocketContext webSocketContext)
{
_context = webSocketContext;
var receiveBuffer = new byte[MaxMessageSize];
var socket = _context.WebSocket;
while (socket.State == WebSocketState.Open)
{
var receiveResult =
await socket.ReceiveAsync(new ArraySegment <byte>(receiveBuffer), CancellationToken.None);
switch (receiveResult.MessageType)
{
case WebSocketMessageType.Close:
await socket.CloseAsync(WebSocketCloseStatus.NormalClosure, string.Empty, CancellationToken.None);
break;
case WebSocketMessageType.Binary:
await
socket.CloseAsync(WebSocketCloseStatus.InvalidMessageType, "Cannot accept binary frame",
CancellationToken.None);
break;
case WebSocketMessageType.Text:
var receivedString = _defaultEncoding.GetString(receiveBuffer, 0, receiveResult.Count);
var echoString = string.Concat(UserName, " said: ", receivedString);
// var outputBuffer = new ArraySegment<byte>(_defaultEncoding.GetBytes(echoString));
ChatApp.BroadcastMessage(echoString);
break;
default:
goto case WebSocketMessageType.Close;
}
}
}
