public static I CreateInstance(string instanceId, Connection connection, SendReceiveOptions options)
{
lock (cacheLocker)
{
var key = new CachedRPCKey(instanceId, connection, typeof(I));
if (cachedInstances.ContainsKey(key))
{
return((I)cachedInstances[key]);
}
//Create the instance
var res = (I)Activator.CreateInstance(Type, instanceId, connection, options, typeof(I), Client.DefaultRPCTimeout);
Dictionary <string, FieldInfo> eventFields = new Dictionary <string, FieldInfo>();
foreach (var ev in typeof(I).GetEvents())
{
eventFields.Add(ev.Name, Type.GetField(ev.Name, BindingFlags.NonPublic | BindingFlags.Instance));
}
//Add the packet handler to deal with incoming event firing
connection.AppendIncomingPacketHandler <RemoteCallWrapper>(typeof(I).Name + "-RPC-LISTENER-" + instanceId, (header, internalConnection, eventCallWrapper) =>
{
try
{
//Let's do some basic checks on the data we've been sent
if (eventCallWrapper == null || !eventFields.ContainsKey(eventCallWrapper.name))
{
return;
}
var del = eventFields[eventCallWrapper.name].GetValue(res) as Delegate;
var sender = eventCallWrapper.args[0].UntypedValue;
var args = eventCallWrapper.args[1].UntypedValue;
del.DynamicInvoke(sender, args);
}
catch (Exception) { }
});
connection.AppendIncomingPacketHandler <string>(typeof(I).Name + "-RPC-DISPOSE-" + instanceId, (header, internalConnection, eventCallWrapper) =>
{
(res as IRPCProxy).Dispose();
});
cachedInstances[key] = res;
return(res);
}
}
/// <summary>
/// Causes the provided <see cref="IRPCProxy"/> instance to be disposed
/// </summary>
/// <param name="clientObject">The <see cref="IRPCProxy"/> to dispose</param>
public static void DestroyRPCClient(IRPCProxy clientObject)
{
if (!clientObject.IsDisposed)
{
clientObject.GetType().GetField("isDisposed", BindingFlags.NonPublic | BindingFlags.Instance).SetValue(clientObject, true);
var connection = clientObject.ServerConnection;
if (connection.ConnectionInfo.ConnectionState != ConnectionState.Shutdown)
{
string packetTypeRequest = clientObject.ImplementedInterface.Name + "-REMOVE-REFERENCE-" + clientObject.ServerInstanceID;
RemoteCallWrapper wrapper = new RemoteCallWrapper();
wrapper.args = new List <RPCArgumentBase>();
wrapper.name = null;
wrapper.instanceId = clientObject.ServerInstanceID;
//Tell the server that we are no longer listenning
try { connection.SendObject <RemoteCallWrapper>(packetTypeRequest, wrapper); }
catch (Exception) { }
//Next remove the event packet handler
try { connection.RemoveIncomingPacketHandler(clientObject.ImplementedInterface.Name + "-RPC-LISTENER-" + clientObject.ServerInstanceID); }
catch (Exception) { }
//Next remove the server side dispose handler
try { connection.RemoveIncomingPacketHandler(clientObject.ImplementedInterface.Name + "-RPC-DISPOSE-" + clientObject.ServerInstanceID); }
catch (Exception) { }
}
//Finally remove the object from the cache. This guarentees that if we try to get the instance again at some time in the future
//we won't end up with a disposed RPC object
lock (cacheLocker)
{
var cacheKey = new CachedRPCKey(clientObject.ServerInstanceID, clientObject.ServerConnection, clientObject.ImplementedInterface);
try { cachedInstances.Remove(cacheKey); }
catch (Exception) { }
}
}
}
