Unable to read data from the transport connection: the connection was closed

The exception is Remoting Exception - Authentication Failure. The detailed message says "Unable to read data from the transport connection: the connection was closed."

I'm having trouble with creating two simple servers that can comunicate as remote objects in C#. ServerInfo is just a class I created that holds the IP and Port and can give back the address. It works fine, as I used it before, and I've debugged it. Also the server is starting just fine, no exception is thrown, and the channel is registered without problems. I'm using Forms to do the interfaces, and call some of the methods on the server, but didn't find any problems in passing the parameters from the FormsApplication to the server when debugging. All seems fine in that chapter.

public ChordServerProgram()
        {
            RemotingServices.Marshal(this, "PADIBook");
            nodeInt = 0;
        }

        public void startServer()
        {
            try
            {
                serverChannel = new TcpChannel(serverInfo.Port);
                ChannelServices.RegisterChannel(serverChannel, true);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
            }
        }

I run two instances of this program. Then startNode is called on one of the instances of the application. The port is fine, the address generated is fine as well. As you can see, I'm using the IP for localhost, since this server is just for testing purposes.

public void startNode(String portStr)
            {
                IPAddress address = IPAddress.Parse("127.0.0.1");
                Int32 port = Int32.Parse(portStr);
                serverInfo = new ServerInfo(address, port);

                startServer();

                //node = new ChordNode(serverInfo,this);

            }

Then, in the other istance, through the interface again, I call a开发者_开发百科nother startNode method, giving it a seed server to get information from. This is where it goes wrong. When it calls the method on the seedServer proxy it just got, a RemotingException is thrown, due to an authentication failure. (The parameter I'll want to get is the node, I'm just using the int to make sure the ChordNode class has nothing to do with this error.)

        public void startNode(String portStr, String seedStr)
        {
            IPAddress address = IPAddress.Parse("127.0.0.1");
            Int32 port = Int32.Parse(portStr);
            serverInfo = new ServerInfo(address, port);

            IPAddress addressSeed = IPAddress.Parse("127.0.0.1");
            Int32 portSeed = Int32.Parse(seedStr);
            ServerInfo seedInfo = new ServerInfo(addressSeed, portSeed);            

            startServer();

            ChordServerProgram seedServer = (ChordServerProgram)Activator.GetObject(typeof(ChordServerProgram), seedInfo.GetFullAddress());

//            node = new ChordNode(serverInfo,this);
            int seedNode = seedServer.nodeInt;
//            node.chordJoin(seedNode.self);

        }

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Try setting the ensureSecurity to false, and it should start working.
ChannelServices.RegisterChannel(serverChannel, false);

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You've specified that security is a must on your Remoting server in startServer() with:

ChannelServices.RegisterChannel(serverChannel, true); 

Yet the 'client' end does not specify security, hence the authorisation error. You need to specify tcp channel security on both ends unless the server security setting is set to 'false'. In your second startNode method you need to do the following before using Activator.GetObject, note no port specified on the TcpChannel unlike the server end:

TcpChannel ClientChan = new TcpChannel();            
ChannelServices.RegisterChannel(ClientChan, true); 

Furthermore, unless you're doing it in some code you haven't given us, you also do not seem to have registered a well known service type server side, although you say it's been working in the debugger so maybe that's not necessary in the case. See MSDN on RegisterWellKnownServiceType.