public async override Task <WebsocketSessionPeer> JoinSession(HttpContext context, string sessionType, string sessionKey) { WebsocketSession targetSession = GetSessionByKey(sessionKey); if (targetSession == null) { targetSession = this.CreateSession(sessionType, sessionKey); } if (targetSession.GetPeers().Count > 0) { throw new Exception("Unable to join Progress session that already has a subscriber."); } WebSocket socket = await context.WebSockets.AcceptWebSocketAsync(); WebsocketSessionPeer peer = targetSession.AddPeer(socket); targetSession.SetAttribute("hostId", peer.Token.PeerId); // alert requester of their own token WebsocketSessionPeerToken hostToken = peer.Token; WebsocketSessionGreeting greeting = new WebsocketSessionGreeting { SessionKey = sessionKey, HostToken = hostToken, Token = peer.Token }; WebsocketSessionMessageResponse greetingResponse = CreateWebsocketResponseMessage(WebsocketSessionMessageType.Greeting, greeting); SendMessage(peer, greetingResponse); return(peer); }
public static WebsocketSessionUpdate[] CreatePeerUpdates(WebsocketSessionUpdateStatus status, WebsocketSessionPeerToken peerToken) { WebsocketSessionPeerToken[] peerTokens = new WebsocketSessionPeerToken[] { peerToken }; return(CreatePeerUpdates(status, peerTokens)); }
public virtual async Task <WebsocketSessionPeer> JoinSession(HttpContext context, string sessionType, string sessionKey) { WebsocketSession targetSession = GetSessionByKey(sessionKey); if (targetSession == null) { targetSession = this.CreateSession(sessionType, sessionKey); } WebSocket socket = await context.WebSockets.AcceptWebSocketAsync(); WebsocketSessionPeer sessionSocket = targetSession.AddPeer(socket); string hostId = sessionSocket.Token.PeerId; if (targetSession.GetPeers().Count == 1) { targetSession.SetAttribute("hostId", hostId); } else { hostId = targetSession.GetAttributeValue <string>("hostId"); } // alert requester of their own token, the hosts token and other existing peers WebsocketSessionPeerToken hostToken = targetSession.GetPeerById(hostId).Token; WebsocketSessionPeerToken[] participants = targetSession.GetPeers().Where(pair => pair.Value.Token.PeerId != sessionSocket.Token.PeerId).Select(pair => pair.Value.Token).ToArray(); WebsocketSessionGreeting greeting = new WebsocketSessionGreeting { SessionKey = sessionKey, HostToken = hostToken, Token = sessionSocket.Token, Peers = participants }; WebsocketSessionMessageResponse greetingResponse = CreateWebsocketResponseMessage(WebsocketSessionMessageType.Greeting, greeting); SendMessage(sessionSocket, greetingResponse); return(sessionSocket); }
private Task ProcessMessageRequest(WebsocketSessionMessageRequest request, string sessionKey, WebsocketSessionPeer peer) { // get a reference to the session WebsocketSession session = GetSessionByKey(sessionKey); // handle the different types of messages; string message = ""; switch (request.Type) { case WebsocketSessionMessageType.Introduction: string hostId = session.GetAttributeValue <string>("hostId"); WebsocketSessionPeerToken token = System.Text.Json.JsonSerializer.Deserialize <Models.WebsocketSessionPeerToken>(request.Message); peer.Token.DisplayName = token.DisplayName; peer.Token.IconUrl = token.IconUrl; if (token.PeerId == hostId) { // if host, no need to request access; just grant access; WebsocketSessionUpdate[] updates = CreatePeerUpdates(WebsocketSessionUpdateStatus.AccessGranted, peer.Token); WebsocketSessionMessageResponse hostAlertResponse = CreateWebsocketResponseMessage(WebsocketSessionMessageType.StatusUpdates, updates); SendMessage(sessionKey, hostId, hostAlertResponse); return(Task.CompletedTask); } message = request.Message; break; case WebsocketSessionMessageType.StatusUpdates: case WebsocketSessionMessageType.ByteArray: case WebsocketSessionMessageType.Text: message = request.Message; break; case WebsocketSessionMessageType.Reaction: if (request.TargetMessageId == null) { throw new Exception("Reaction must provide TargetMessageId value."); } break; default: throw new Exception("Unknown Message Type: " + request.Type); } List <WebsocketSessionMessageResponse> messages = session.GetAttributeValue <List <WebsocketSessionMessageResponse> >("messages"); WebsocketSessionMessageResponse messageResponse = new WebsocketSessionMessageResponse() { MessageId = messages.Count, MessageType = request.Type, Message = message, SenderId = peer.Token.PeerId, Recipients = request.Recipients }; messages.Add(messageResponse); if (request.Recipients == null || request.Recipients.Length == 0) { SendMessageToPeers(sessionKey, peer.Token.PeerId, messageResponse); } else { SendMessage(sessionKey, request.Recipients, messageResponse); } return(Task.CompletedTask); }