private IQ ProcessBind(XmppStream stream, IQ iq, XmppHandlerContext context) { if (iq.Type != IqType.set) { return(XmppStanzaError.ToBadRequest(iq)); } var answer = new IQ(IqType.result); answer.Id = iq.Id; var bind = (Bind)iq.Bind; var resource = !string.IsNullOrEmpty(bind.Resource) ? bind.Resource : stream.User; if (bind.TagName.Equals("bind", StringComparison.OrdinalIgnoreCase)) { var jid = new Jid(stream.User, stream.Domain, resource); var session = context.SessionManager.GetSession(jid); if (session != null) { if (session.Stream.Id != stream.Id) { context.Sender.SendToAndClose(session.Stream, XmppStreamError.Conflict); answer.AddTag("newTalkWindow", "true"); } else { return(XmppStanzaError.ToConflict(iq)); } } stream.BindResource(resource); context.SessionManager.AddSession(new XmppSession(jid, stream)); answer.Bind = new Bind(jid); } else if (bind.TagName.Equals("unbind", StringComparison.OrdinalIgnoreCase)) { if (!stream.Resources.Contains(resource)) { return(XmppStanzaError.ToNotFound(iq)); } context.SessionManager.CloseSession(iq.From); stream.UnbindResource(resource); if (stream.Resources.Count == 0) { context.Sender.CloseStream(stream); } } else { return(XmppStanzaError.ToBadRequest(iq)); } if (stream.MultipleResources) { answer.To = iq.From; } return(answer); }