Running a program in Java about slidsender and slidreceiver with a brief explanation what each one is doing.

slidreceiver

import java.net.*; import java.io.*; class slidreceiver

{

public static void main(String a[])throws Exception

{

Socket s=new Socket(InetAddress.getLocalHost(),10); DataInputStream in=new

DataInputStream(s.getInputStream()); PrintStream p=new

PrintStream(s.getOutputStream());

int i=0,rptr=-1,nf,rws=8; String rbuf[]=new String[8]; String ch;

System.out.println(); do

{

nf=Integer.parseInt(in.readLine()); if(nf<=rws-1)

{

for(i=1;i<=nf;i++)

{

rptr=++rptr%8; rbuf[rptr]=in.readLine();

System.out.println("The received Frame " +rptr+" is : "+rbuf[rptr]);

}

rws-=nf; System.out.println(" Acknowledgment sent "); p.println(rptr+1);

rws+=nf; }

else break;

ch=in.readLine();

}

while(ch.equals("yes"));

}

}

slidsender

import java.net.*;

import java.io.*;

import java.rmi.*;

public class slidsender

{

public static void main(String a[]) throws Exception

{

ServerSocket ser=new ServerSocket(1024);

Socket s=ser.accept();

DataInputStream in=new DataInputStream(System.in);

DataInputStream in1=new DataInputStream(s.getInputStream());

String sbuff[]=new String[8];

PrintStream p;

int sptr=0,sws=8,nf,ano,i;

String ch;

do

{

p=new PrintStream(s.getOutputStream());

System.out.print("Enter the no. of frames : ");

nf=Integer.parseInt(in.readLine());

p.println(nf);

if(nf<=sws-1) {

System.out.println("Enter "+nf+" Messages to be send ");

for(i=1;i<=nf;i++) {

sbuff[sptr]=in.readLine();

p.println(sbuff[sptr]);

sptr=++sptr%8;} sws-=nf;

System.out.print("Acknowledgment received");

ano=Integer.parseInt(in1.readLine());

System.out.println(" for "+ano+" frames"); sws+=nf;

} else

{

System.out.println("The no. of frames exceeds window size");

break;

}

System.out.print(" Do you wants to send some more frames : ");

ch=in.readLine();

p.println(ch);

}

while(ch.equals("yes"));

s.close();

}

}