public List<string> GetSubscriptions(Session session)
{
List<string> list;
if (perSessionSubs.TryGetValue(session, out list))
return list;
return null;
}
async Task MessageLoop(Session session)
{
try
{
// now loop for any incoming (we just echo)
while (session.Socket.State == WebSocketState.Open)
{
await session.ReceiveAsync();
if (session.Result.CloseStatus.HasValue)
break;
Message m = Message.Deserialize(new ArraySegment<byte>(session.Buffer, 0, session.Result.Count));
switch (m.Type)
{
case MessageType.Subscribe:
this.Factory.AddSubscription(session, (Subscribe) m);
break;
case MessageType.GetSubscriptions:
var list = this.Factory.GetSubscriptions(session);
var response = new Subscriptions();
response.List = list;
await session.SendAsync(response.Serialize());
break;
default:
await DoUnhandled(session, m);
break;
}
}
}
catch { }
}
public void AddSubscription(Session session, Subscribe sub)
{
HashSet<Session> subs;
if (!perUserSubs.TryGetValue(sub.User, out subs))
subs = perUserSubs[sub.User] = new HashSet<Session>();
lock (subs)
{
subs.Add(session);
}
List<string> list;
if (!perSessionSubs.TryGetValue(session, out list))
list = perSessionSubs[session] = new List<string>();
list.Add(sub.User);
}
public void Remove(Session session)
{
sessions.TryRemove(session.Id, out session);
foreach (var u in perSessionSubs[session])
perUserSubs[u].Remove(session);
}
public Session Create(WebSocket ws)
{
var session = new Session(this, ws);
sessions[session.Id] = session;
return session;
}
async Task DoUnhandled(Session session, Message m)
{
Error error = new Error("Unhandled message type: " + m.Type);
await session.SendAsync(error.Serialize());
}
