Stream was not readable is caused when use readbinary

Question

I am trying to send a value by socket .So i have two parts in my project Client and server .

The client sends a value to server using this code :

  NetworkStream networkStream = socketForServer.GetStream();
            System.IO.BinaryWriter binaryWriter =
               new System.IO.BinaryWriter(networkStream);

            //------
            int messageSource = 0;
            int messageDesitination = 0;
            int interlockingId = 0;
            int trackId = 0;
            int trainId = 2;
            int direction = 0;
            int messageType = 0;
            int informationType = 0;
            int dateTime = 0;

foreach (Sensor LeftSensorList in LeftSensor)
                {

                    binaryWriter.Write(messageSource);
                    binaryWriter.Write(messageDesitination);
                    binaryWriter.Write(interlockingId);
                    binaryWriter.Write(trackId);
                    binaryWriter.Write(trainId);
                    binaryWriter.Write(direction);
                    binaryWriter.Write(messageType);
                    binaryWriter.Write(informationType);
                    binaryWriter.Write(dateTime);

                    binaryWriter.Flush();
                    binaryWriter.Close();
                    Thread.Sleep(4000);

                }

In server part i should read the binary values :

static void Listeners()
        {

            Socket socketForClient = tcpListener.AcceptSocket();
            if (socketForClient.Connected)
            {

                NetworkStream networkStream = new NetworkStream(socketForClient);

                while (true)
                {                                
                    List<int> variables = new List<int>();
                    using (var reader = new BinaryReader(networkStream))
                    {

                        int messageSource = reader.ReadInt32();
                        int messageDesitination = reader.ReadInt32();
                        int interlockingId = reader.ReadInt32();
                        int trackId = reader.ReadInt32();
                        int trainId = reader.ReadInt32();
                        int direction = reader.ReadInt32();
                        int messageType =reader.ReadInt32();
                        int informationType = reader.ReadInt32();
                        int dateTime = reader.ReadInt32();
                         reader.Close();

                    }
            }
         }

So when the client send a value i can get the value in server part just for first time ,when a client sends another values to my server i got this error :

Stream was not readable.

Why ?

Answer 1

This is caused because BinaryReader assumes that it owns the stream and closes it when it uses it. If you're using 4.5 you can use this overload http://msdn.microsoft.com/en-us/library/gg712804(v=vs.110).aspx

It should look like this for you.

static void Listeners()
{

    Socket socketForClient = tcpListener.AcceptSocket();
    if (socketForClient.Connected)
    {
        NetworkStream networkStream = new NetworkStream(socketForClient);
        while (true)
        {                                
            List<int> variables = new List<int>();

            //Hint : This Line
            using (var reader = new BinaryReader(networkStream, Encoding.Default, true))
            {
                int messageSource = reader.ReadInt32();
                int messageDesitination = reader.ReadInt32();
                int interlockingId = reader.ReadInt32();
                int trackId = reader.ReadInt32();
                int trainId = reader.ReadInt32();
                int direction = reader.ReadInt32();
                int messageType =reader.ReadInt32();
                int informationType = reader.ReadInt32();
                int dateTime = reader.ReadInt32();
                reader.Close();
            }
        }   
    }
}