static void ClientDisconnected(object sender, EventArgs e)
{
Debug.WriteLine(DateTime.Now + ": Client disconnect: " + ((IClientChannel)sender).SessionId.ToString());
// cleanup event
TEventEntry channelEvent;
if (Lookups.channelToEvent.TryGetValue(sender, out channelEvent))
{
// decode session part of event name
var sessionEventName = channelEvent.eventName.Substring(0, channelEvent.eventName.LastIndexOf('.'));
var connection = channelEvent.connection;
// signal client is removed
channelEvent.signalIntString(TEventEntry.actionDelete, ((IClientChannel)sender).SessionId); // channel, action delete (optional session id)
// remove link between channel and event
channelEvent.unPublish();
channelEvent.unSubscribe();
channelEvent.Tag = null;
Lookups.channelToEvent.Remove(sender);
//Lookups.channelToClientType.Remove(sender);
//Lookups.channelToRemoteAddress.Remove(sender);
lock (Lookups.rootEvent)
{
// check if last channel on session then session can be discarded
if (Lookups.checkForLastChannel(sessionEventName + "."))
{
var sessionEvent = connection.publish(sessionEventName, false); // already published so is just a lookup
// remove handler
sessionEvent.onIntString -= SessionEvent_onIntString;
// unlink
sessionEvent.unPublish();
sessionEvent.unSubscribe();
Debug.WriteLine(" Last client on session " + sessionEventName);
}
}
}
}
public void SendMessageToServer(Message msg)
{
try
{
var callback = OperationContext.Current.GetCallbackChannel <IMessageToClient>();
var channel = OperationContext.Current.Channel;
TEventEntry channelEvent;
if (!Lookups.channelToEvent.TryGetValue(channel, out channelEvent))
{
var queryParameters = HttpUtility.ParseQueryString((OperationContext.Current.IncomingMessageProperties["WebSocketMessageProperty"] as WebSocketMessageProperty).WebSocketContext.RequestUri.Query);
var sessionName = queryParameters["session"];
string clientType = "";
try { clientType = queryParameters["clienttype"]; } catch { }
if (sessionName == null || sessionName == "")
{
sessionName = "unknown";
}
//var remoteAddress = OperationContext.Current.IncomingMessageHeaders.From;
var repmp = OperationContext.Current.IncomingMessageProperties[RemoteEndpointMessageProperty.Name] as RemoteEndpointMessageProperty;
var remoteAddress = repmp.Address + ":" + repmp.Port.ToString();
// signal start of client on session
Debug.WriteLine(DateTime.Now + ": Start of client " + remoteAddress + " on session: " + sessionName + " (" + channel.SessionId.ToString() + ", " + clientType + ")");
try
{
Lookups.channelToClientType[channel] = clientType;
Lookups.channelToRemoteAddress[channel] = remoteAddress;
var sessionEvent = Lookups.connection.publish(Lookups.RootEventName + "." + sessionName, false);
// make sure we have a root event
Lookups.HookupRoot();
// check if first channel on session
lock (Lookups.rootEvent)
{
if (!sessionEvent.isSubscribed)
{
// yes, is the first channel on session
Debug.WriteLine(" First client on session " + sessionEvent.eventName);
sessionEvent.subscribe();
// make client list queryable by session module
sessionEvent.onIntString += ClientTrackerChannelInitializer.SessionEvent_onIntString;
}
}
// setup channel
channelEvent = Lookups.connection.subscribe(sessionEvent.eventName + "." + channel.SessionId, false);
Lookups.channelToEvent[channel] = channelEvent;
channelEvent.Tag = callback;
channelEvent.onString += ChannelEvent_onString;
channelEvent.onStreamCreate += ChannelEvent_onStreamCreate;
channelEvent.onStreamEnd += ChannelEvent_onStreamEnd;
// make client event manageable by session module
channelEvent.onIntString += ChannelEvent_onIntString;
// new channel with event name on session event
string channelEventNamePostfix;
try
{
channelEventNamePostfix = (clientType != null) && (clientType.Length > 0) ? "&" + clientType : "";
}
catch
{
channelEventNamePostfix = "";
}
sessionEvent.signalIntString(TEventEntry.actionNew, channelEvent.eventName + channelEventNamePostfix);
// todo: signal new client on root event?
}
catch (Exception e)
{
Debug.WriteLine(DateTime.Now + ": ## exception registering channel: " + e.Message);
}
}
if (!msg.IsEmpty && ((IChannel)callback).State == CommunicationState.Opened)
{
byte[] returnMessage = msg.GetBody <byte[]>();
if (returnMessage.Length > TConnection.imbMaximumPayloadSize / 10) // switch to stream for very large messages
{
channelEvent.signalStream("string", new MemoryStream(returnMessage));
}
else
{
channelEvent.signalString(returnMessage);
}
}
}
catch (Exception e)
{
Debug.WriteLine(DateTime.Now + ": ## unhandled exception in WebSocketsServer.SendMessageToServer: " + e.Message);
}
}
