public void Connect()
{
using (StreamWriter sw = File.AppendText(@"c:\tmp\MessageFromWebSite.txt"))
{
sw.WriteLine(DateTime.Now.ToString() + " connected");
}
// get the channel
IClientMethods callbackChannel = OperationContext.Current.GetCallbackChannel <IClientMethods>();
lock (_sycnRemotePrinter)
{
CachedChannelsList_temp = HttpRuntime.Cache["callbackChannelsList"];
if (CachedChannelsList_temp != null)
{
_callbackChannelsList = (List <IClientMethods>)CachedChannelsList_temp;
if (!_callbackChannelsList.Contains(callbackChannel))
{
_callbackChannelsList.Add(callbackChannel);
HttpRuntime.Cache.Insert("callbackChannelsList",
_callbackChannelsList,
null,
System.Web.Caching.Cache.NoAbsoluteExpiration,
System.Web.Caching.Cache.NoSlidingExpiration,
System.Web.Caching.CacheItemPriority.Default,
null);
using (StreamWriter sw = File.AppendText(@"c:\tmp\MessageFromWebSite.txt"))
{
sw.WriteLine(DateTime.Now.ToString() + " " + "Cache is not null. Added channel "
+ _callbackChannelsList.Count + ". Chanel ID :" + callbackChannel.ToString());
}
}
}
else // if there is no cached list channel. this occures on the first connection
{
_callbackChannelsList.Add(callbackChannel);
HttpRuntime.Cache.Insert("callbackChannelsList",
_callbackChannelsList,
null,
System.Web.Caching.Cache.NoAbsoluteExpiration,
System.Web.Caching.Cache.NoSlidingExpiration,
System.Web.Caching.CacheItemPriority.Default,
null);
using (StreamWriter sw = File.AppendText(@"c:\tmp\MessageFromWebSite.txt"))
{
sw.WriteLine(DateTime.Now.ToString() + " " + "Cache is null. Added first channel "
+ _callbackChannelsList.Count + ". Chanel ID :" + callbackChannel.ToString());
}
}
}
}
public void Disconnect()
{
// get the channel
IClientMethods callbackChannel = OperationContext.Current.GetCallbackChannel <IClientMethods>();
try
{
lock (_sycnRemotePrinter)
{
CachedChannelsList_temp = HttpRuntime.Cache["callbackChannelsList"];
if (CachedChannelsList_temp != null)
{
_callbackChannelsList = (List <IClientMethods>)CachedChannelsList_temp;
//remove channel
_callbackChannelsList.Remove(callbackChannel);
// Update cache
HttpRuntime.Cache.Insert("callbackChannelsList",
_callbackChannelsList,
null,
System.Web.Caching.Cache.NoAbsoluteExpiration,
System.Web.Caching.Cache.NoSlidingExpiration,
System.Web.Caching.CacheItemPriority.Default,
null);
using (StreamWriter sw = File.AppendText(@"c:\tmp\MessageFromWebSite.txt"))
{
sw.WriteLine(DateTime.Now.ToString() + " " + "Disconnected "
+ _callbackChannelsList.Count + ". Chanel ID :" + callbackChannel.ToString());
}
}
}
}
catch (Exception e)
{
// TODO: DONT LEAVE IT EMPTY
}
}
