To Send POST Method Value in ProxyServer

Question

Hello
I developed a ProxyServer. Problem is when i send post method value to server...data is not sending correctly. But i can get the value correctly form browser. How can send the post method values.
My source code is
* ServerThread.java
* Created on May 15, 2001, 2:05 PM
* @author  maniksanthosh
* @version
import java.io.*;
import java.net.*;
import java.util.*;
import java.io.BufferedInputStream;
public class ServerThread extends java.lang.Thread {
    /** Creates new ServerThread */
    Socket client;
    public ServerThread(Socket client) {
        this.client = client;
    String SampleURL="";
    public void run() {
        try
        client.setKeepAlive(true);
        DataInputStream Sin = new DataInputStream(client.getInputStream());
        OutputStream Sout = client.getOutputStream();
        String request = Sin.readLine()+"\n";
       System.out.println(request);
        int fsp =  request.indexOf(' ');
        int nsp = request.indexOf(' ',fsp+1);
        int eol = request.indexOf('\n');
        String method = request.substring(0,fsp);
        System.out.println("Method Length :"+method.length());
        String SUrl = request.substring(fsp+1,nsp);
        String raw_mime_header = request.substring(eol+1);
        request = request.substring(0,eol);
       /* System.setProperty("proxySet","true");
        System.setProperty("proxyHost","132.132.64.244");
        System.setProperty("proxyPort","3128");*/
            System.out.println(SUrl);
         URL url = new URL(SUrl);
         HttpURLConnection urlc =(HttpURLConnection)url.openConnection();
         System.out.println("System Method :"+urlc.getRequestMethod());
         urlc.setDoOutput(true);
         System.out.println("URL: "+url);
         System.out.println("Method: "+method);
     //   System.out.println("Request Property :"+urlc.getRequestProperty("accept"));
         String data ="";
        if(method.equalsIgnoreCase("GET"))
          // urlc.setRequestMethod("GET");
           /*while((data = Sin.readLine())!=null)
                if(data.equals("") || data.equals(" ") || data.equals("\r\n\r\n"))
                    URLout.writeBytes("\r\n\r\n");
                    URLout.flush();
                    break;
                URLout.writeBytes(data+"\r\n");
                URLout.flush();
         int ch =0;  
            InputStream URLin = urlc.getInputStream();
            while((ch=URLin.read())!=-1)
                Sout.write(ch);
                Sout.flush();
        }else
if(method.equalsIgnoreCase("POST"))
          DataOutputStream URLout = new DataOutputStream(urlc.getOutputStream());
          System.out.println("Request Method : "+urlc.getRequestMethod());
          System.out.println("Instance Follow Redirects : "+urlc.getResponseCode());
          urlc.setInstanceFollowRedirects(true);
     //     urlc.setDoInput(true);
            while((data=Sin.readLine())!=null)
                 if(data.equals("") || data.equals(" ") || data.equals("\r\n\r\n"))
                    URLout.writeBytes("\r\n");
                    int postch = 0;
                    int total = Sin.available();
                    System.out.println("Total :"+total);
                    for(int l=0;l<total;l++)
                       postch=Sin.read();
                       URLout.write(postch);
                    System.out.print((char)postch);
                    //   URLout.flush();
                    URLout.writeBytes("\r\n");
                  // URLout.flush();
                    break;
                 urlc.setDefaultRequestProperty("POST",postch);
                 URLout.writeBytes(data+"\r\n");
                URLout.flush();                                 
            int ch =0;  
            InputStream URLin = urlc.getInputStream();
            while((ch=URLin.read())!=-1)
                Sout.write(ch);
                Sout.flush();
            URLin.close();
            URLout.close();
               Sout.flush();
         Sin.close();
         Sout.close();
         Sin.close();
        }catch(Exception e){System.out.println("Inside Run Method in Server Thread "+e);}
    private String getPostValue(InputStream in) //throws IOException
     /*byte buf[] = new byte[8192];
     int pos = 0;
     int c;
     while((c=in.read())!=-1)
        System.out.print((char)c);
            switch(c)
                case '\r' :
                    break;
                case '\n':
                 if(buf[pos-1]==c)
                        return new String(buf,0,pos);
                 default:
                     buf[pos++] = (byte) c;
      return null; */
        /*DataInputStream data = new DataInputStream(in);
        String postStr ="";
        while((postStr=data.readLine())!=null)
            System.out.println(postStr);
        return postStr;*/
        return null;
   private String  getRawRequest(InputStream in) throws IOException
        byte buf[] = new byte[8192];
        int pos=0;
        int c;
        while((c=in.read())!= -1)
            System.out.print((char)c);
            switch(c)
                case '\r' :
                    SampleURL+="/r";
                    break;
                case '\n':
                    SampleURL+="/n";
                 if(buf[pos-1]==c)
                        return new String(buf,0,pos);
                 default:
                     buf[pos++] = (byte) c;
                     SampleURL+=(char)c;
        return null;
}

Answer 1

I can read all the value from browser ..but i couldn't send that to server. I changed ("\r\n\r\n") to ("\r\n"). Still the value is not going correct.
Whether I have to use setDefautRequestProperty(). if i have cookies..how can i send that value to browser from Server or from Server to browser.
Regards
Santhosh