/**
* Subscribe - Private Interface
*
* @param String channel name.
* @param Procedure function callback
* @param String timetoken.
*/
private void _subscribe(string channel, object timetoken, Action<object> usercallback, bool reconnect)
{
//Exit if the channel is unsubscribed
if (!_channelSubscription.ContainsKey(channel))
{
if (appSwitch.TraceInfo)
{
Trace.WriteLine(string.Format("DateTime {0}, Due to Unsubscribe, further subscription was stopped for channel {1}", DateTime.Now.ToString(), channel.ToString()));
}
return;
}
//Check internet connection
ClientNetworkStatus.checkInternetStatus(_pubnetSystemActive, updateInternetStatus);
Thread.Sleep(2000);
if (!_pubnetInternetStatus && _pubnetSystemActive)
{
if (appSwitch.TraceInfo)
{
Trace.WriteLine(string.Format("DateTime {0}, Subscribe - No internet connection for {1}", DateTime.Now.ToString(), channel));
}
ReconnectState netState = new ReconnectState();
netState.channel = channel;
netState.type = ResponseType.Subscribe;
netState.callback = usercallback;
netState.timetoken = timetoken;
reconnectNetwork(netState);
return;
}
// Begin recursive subscribe
try
{
// Build URL
List<string> url = new List<string>();
url.Add("subscribe");
url.Add(this.SUBSCRIBE_KEY);
url.Add(channel);
url.Add("0");
url.Add(timetoken.ToString());
// Wait for message
_urlRequest(url, ResponseType.Subscribe, usercallback, reconnect);
}
catch(Exception ex)
{
if (appSwitch.TraceError)
{
Trace.WriteLine(string.Format("DateTime {0} method:_subscribe \n channel={1} \n timetoken={2} \n Exception Details={3}",DateTime.Now.ToString(), channel, timetoken.ToString(), ex.ToString()));
}
//TODO: Check if we need sleep time
System.Threading.Thread.Sleep(1000);
this._subscribe(channel, timetoken,usercallback,false);
}
}
private void reconnectNetwork(ReconnectState netState)
{
System.Threading.Timer timer = new Timer(new TimerCallback(reconnectNetworkCallback),netState,0,PUBNUB_NETWORK_CHECK_CALLBACK_INTERVAL_IN_SEC * 1000);
_channelReconnectTimer.AddOrUpdate(netState.channel, timer, (key, oldState) => timer);
}