示例#1
0
        public async Task TrafficWatchWebsockets()
        {
            using (var webSocket = await HttpContext.WebSockets.AcceptWebSocketAsync())
            {
                JsonOperationContext context;
                using (ServerStore.ContextPool.AllocateOperationContext(out context))
                {
                    try
                    {
                        var resourceName = GetStringQueryString("resourceName", required: false);
                        var connection   = new TrafficWatchConnection(webSocket, ServerStore.ServerShutdown,
                                                                      "db/" + resourceName);
                        TrafficWatchManager.AddConnection(connection);
                        await connection.StartSendingNotifications();
                    }
                    catch (IOException)
                    {
                        // nothing to do - connection closed
                    }
                    catch (Exception ex)
                    {
                        if (Logger.IsInfoEnabled)
                        {
                            Logger.Info("Error encountered in TrafficWatch handler", ex);
                        }

                        try
                        {
                            using (var ms = new MemoryStream())
                            {
                                using (var writer = new BlittableJsonTextWriter(context, ms))
                                {
                                    context.Write(writer, new DynamicJsonValue
                                    {
                                        ["Exception"] = ex
                                    });
                                }

                                ArraySegment <byte> bytes;
                                ms.TryGetBuffer(out bytes);
                                await webSocket.SendAsync(bytes, WebSocketMessageType.Text, true, ServerStore.ServerShutdown);
                            }
                        }
                        catch (Exception)
                        {
                            if (Logger.IsInfoEnabled)
                            {
                                Logger.Info("Failed to send the error in TrafficWatch handler to the client", ex);
                            }
                        }
                    }
                }
            }
        }
 public static void Disconnect(TrafficWatchConnection connection)
 {
     ServerHttpTrace.TryRemove(connection);
 }
 public static void AddConnection(TrafficWatchConnection connection)
 {
     ServerHttpTrace.Add(connection);
 }