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serialization over network gives decoderfallbackexception

Posted By:      Posted Date: December 04, 2010    Points: 0   Category :.NET Framework

So, I have two instances of a software communicating over a network by serializing and deserializing objects.  Unfortunately, every now and then, on deserialization, I get a decoderfallbackexception and I have no idea why or how to fix it.

Here's a simplified version of the client.  The server is very similar.

public class Client
  TcpClient tcpClient;
  NetworkStream netStream;
  BinaryFormatter formatter;
  Thread thread;

  public Client(string host, int port)
    tcpClient = new TcpClient(host, port);
    netStream = tcpClient.GetStream();
    formatter = new BinaryFormatter();
    thread = new Thread(Run);

  public void Send(Message msg)
      formatter.Serialize(netStream, msg);

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Serialization and deserialization over network is very slow


I am using the built in C# serialization and deserialization functionality to pass objects over network streams and it works fine. The problem iswhen the client and server programs are running on different computers, sending even the simplest objects over the pipe using serialization is painfully slow (about 50x slower than using byte arrays). If I have the client running on the same box as the server, the serialization approach is nearly as fast as the byte array approach (even though network sockets and serialization are still used). It only slows down when the client and server are running on different machines. Clearly, Serialization is not the cause of the slow down. So why is it so much slower than the byte array approach when the server and client are not on the same computer? Thanks for any help. 


I have put together a simple client/server program to demonstrate this oddity:

namespace PingTest {
 class Server {
  public static void Start() {
   System.Runtime.Serialization.Formatters.Binary.BinaryFormatter binFormatter =
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Is anyone have sample code to set up log in page using network login?

For example: User Name(same as Network Login)

                     Password(Same as Network Login)

Your help is highly appreciated.

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