private async Task ProcessWebSocketRequest(HttpListenerContext ctx)
{
try
{
var endpoint = ctx.Request.RemoteEndPoint.ToString();
var url = ctx.Request.RawUrl;
var queryString = ctx.Request.QueryString;
var connectingArgs = new WebSocketConnectingEventArgs
{
Url = url,
QueryString = queryString,
Endpoint = endpoint
};
if (WebSocketConnecting != null)
{
WebSocketConnecting(connectingArgs);
}
if (connectingArgs.AllowConnection)
{
_logger.LogDebug("Web socket connection allowed");
var webSocketContext = await ctx.AcceptWebSocketAsync(null).ConfigureAwait(false);
if (WebSocketConnected != null)
{
var socket = new SharpWebSocket(webSocketContext.WebSocket, _logger);
WebSocketConnected(new WebSocketConnectEventArgs
{
Url = url,
QueryString = queryString,
WebSocket = socket,
Endpoint = endpoint
});
await ReceiveWebSocket(ctx, socket).ConfigureAwait(false);
}
}
else
{
_logger.LogWarning("Web socket connection not allowed");
ctx.Response.StatusCode = 401;
ctx.Response.Close();
}
}
catch (Exception ex)
{
_logger.LogError(ex, "AcceptWebSocketAsync error");
ctx.Response.StatusCode = 500;
ctx.Response.Close();
}
}
private async Task ReceiveWebSocket(HttpListenerContext ctx, SharpWebSocket socket)
{
try
{
await socket.StartReceive().ConfigureAwait(false);
}
finally
{
TryClose(ctx, 200);
}
}