I hope you can help me, I am a little or very confused with Sockets in java, the exercise is the following ...
Create a server client application where the server "thinks a number" in an interval known and the client tries to guess it. The client sends to the server the possible number and to help to the client, the server can respond to the client any of the following answers:
You guessed it
Try above
Try below
The client must guess in a minimum number of attempts. At the end of the server it will send you the number of attempts.
In my case I put 5 attempts ...
The server code is this ...
package socket3;
import java.net.*;
import java.io.*;
import java.util.Scanner;
import java.util.Random;
import java.security.SecureRandom;
/**
*
* @author Palomita
*/
public class Socket3 {
public static void main(String[] args){
/**
* @param args the command line arguments
*/
try{
ServerSocket servidor=new ServerSocket(4500);
Socket cliente=servidor.accept();
long startTime = System.currentTimeMillis();
System.out.println("Un cliente se conectó");
DataInputStream in=new DataInputStream(cliente.getInputStream());
DataOutputStream out=new DataOutputStream(cliente.getOutputStream());
ObjectOutputStream resp=new ObjectOutputStream(cliente.getOutputStream());
//resp.writeObject("Hora y fecha: "+hourdateFormat.format(date));
BufferedReader b=new BufferedReader(new InputStreamReader(System.in));
String menin=("");
String menout=("");
Random genera= new Random();
int aleatorio = 1+genera.nextInt(10);
for(int j=1;j<=5;j++){
while(j<=5){
resp.writeObject("ADIVINA EL NUMERO DEL 1 AL 10 EN 5 INTENTOS");
menin=in.readUTF();
int num=Integer.parseInt(menin);
for(int i=1;i<5;i++){
if(aleatorio==num){
System.out.println("Adivinaste en "+i+" intentos.");
cliente.close();
break;
}
else if(aleatorio>num){
System.out.println("Intenta Arriba, te quedan "+i+" intentos.");
}
else if(aleatorio<num){
System.out.println("Intenta Abajo, te quedan "+i+" intentos");
}
}
cliente.close();
break;
}
}
}catch(Exception e){
e.printStackTrace();
}
}
}
And the Client's code is this ...
import java.net.*;
import java.io.*;
import java.util.Scanner;
/**
*
* @author Palomita
*/
public class Cliente {
public static void main(String[] argumentos) {
try{
Socket cliente=new Socket("localhost",4500);
DataInputStream in=new DataInputStream(cliente.getInputStream());
DataOutputStream out=new DataOutputStream(cliente.getOutputStream());
BufferedReader b=new BufferedReader(new InputStreamReader(System.in));
String menin=("");
String menout=("");
for(int j=1;j<=5;j++){
while(j<=5){
ObjectInputStream entrada=new ObjectInputStream(cliente.getInputStream());
String mensaje2=(String) entrada.readObject();
System.out.println(mensaje2);
menout=b.readLine();
out.writeUTF(menout);
}
}
}catch(Exception e){
e.printStackTrace();
}
}
}
In the end, this error marks me in the Server code ...
Un cliente se conectó
Intenta Abajo, te quedan 1 intentos
Intenta Abajo, te quedan 2 intentos
Intenta Abajo, te quedan 3 intentos
Intenta Abajo, te quedan 4 intentos
java.net.SocketException: Socket closed
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:118)
at java.net.SocketOutputStream.write(SocketOutputStream.java:155)
at java.io.ObjectOutputStream$BlockDataOutputStream.drain(ObjectOutputStream.java:1877)
at java.io.ObjectOutputStream$BlockDataOutputStream.setBlockDataMode(ObjectOutputStream.java:1786)
at java.io.ObjectOutputStream.writeNonProxyDesc(ObjectOutputStream.java:1286)
at java.io.ObjectOutputStream.writeClassDesc(ObjectOutputStream.java:1231)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1427)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeFatalException(ObjectOutputStream.java:1577)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:351)
at socket3.Socket3.main(Socket3.java:39)
BUILD SUCCESSFUL (total time: 17 seconds)
And this error in the Client code ...
java.io.EOFException
at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2681)
at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:3156)
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:862)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:358)
at Cliente.main(Cliente.java:23)
BUILD SUCCESSFUL (total time: 4 seconds)
I hope you can help me: (
