InputStream / OutputStream Help

Question

I have in a series 10 commands to be executed on a server. so i am using Buffered OutputStream and DataOutputStream to write those commands to server.
these commands have a set of protocol rule to be followed.
for example i am creating a byte array and i am appending those protocol rules to the byte array and then finally to the stream and then writing to the socket of the server.
everything works fine here.
After that i must read the messages from the server.
this is also fine but t�he problem is everytime i read different input for each command.
i dont know why!!!!
so my read function is as follows,
import java.net.*;
public class xxxxx
InputStream instream;
OutputStream outstream;
public void OpenConnection() throws ConnectException,UnknownHostException
try
     tcpipSocket = new Socket(tcpipparameters.getIpAddress(),tcpipparameters.getPortNumber());
catch(IOException exception)
     System.out.println(exception.toString());
try
     outstream = tcpipSocket.getOutputStream();
     instream = tcpipSocket.getInputStream();
     dos = new DataOutputStream(outstream);
     BufferedOutputStream bos= new BufferedOutputStream(dos);
     dis = new DataInputStream(instream);
     BufferedInputStream bis = new BufferedInputStream(dis);
////////// now i start the command execution on the server
///// The 1st Command --------------(The INIT Command)
     byte[] init = {0,6,0,2};
     init = createMessage.calculateCheckSum(init);
     int len = init.length;
     //dos.write(init,0,len);
     bos.write(init);
     bos.flush();
     int available;
     while((available = bis.available()) > 0)
          byte[] data = new byte[available];
          bis.read(data);
          for(int i = 0 ; i < data.length; i++)
               System.out.print(data);
////////////////// The 2nd Command -------------------(IDENTIFY)
byte[] identify = {0,16,0,20};
// The protocol version number is inserted in to the IDENTIFY byte[]array
int protocol_version_number = 512;
byte[] protocol = {(byte)(protocol_version_number/256) ,(byte)(protocol_version_number%256) };
byte[] temp = new byte[ identify.length +  protocol.length] ;
System.arraycopy( identify, 0, temp, 0, identify.length ) ;
System.arraycopy(protocol, 0, temp, identify.length, protocol.length ) ;
identify = temp ;
String PR_SName = "PRS2.0";
identify = createString.stringData(identify,PR_SName);
identify = createMessage.calculateCheckSum(identify);
len = identify.length;
bos.write(identify);
bos.flush();
int length1 = bis.available();
System.out.println("length of the BufferedInputStream = " + length1);
StringBuffer sb = new StringBuffer();
for (int i=1; i<=length1; i++)
     char reply = (char)bis.read();
     sb.append(reply);
System.out.println(sb.toString());
////////////////// The 3rd Command and So on................................
catch(IOException exception)
     System.err.println("message = " + exception.getMessage());
catch(InterruptedException e)
     System.err.println("Error =" + e);
finally
     try
          //flush and close both "Instream" and "Outstream"
          dos.close();
          dis.close();
          instream.close();
          outstream.close();
     catch (IOException ex)
          ex.printStackTrace();
every time the reading from the server is different.
but i want to have the exact number of bytes to read everytime.
so please correct me where i am wrong.
With regards,
Ashok
          public void CloseConnection()throws IOException
                    tcpipSocket.close();

Answer 1

I would say the answer is in my previous replies to your question. I suggest you have another read of them.