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@maro-Ce3knx • Jan 14, 2010
@manish-r2Hoep • Jan 14, 2010
import java.io.*;
import java.net.*;
class Client
{
public static void main(String args[])throws IOException
{
Socket con=null;
PrintWriter out=null;
BufferedReader in=null;
try
{
con=new Socket("localhost",32);//Developed a socket connection by client
out=new PrintWriter(con.getOutputStream(),true);//Write user input to socket
in=new BufferedReader(new InputStreamReader(con.getInputStream()));//Retrieve input from socket
}
catch(UnknownHostException e)
{
System.err.println("Sorry host can't be found");
System.exit(1);
}
catch(IOException ef)
{
System.err.println("Sorry Input/output fails");
System.exit(1);
}
try
{
BufferedReader std=new BufferedReader(new InputStreamReader(System.in));
String inp;
while((inp=std.readLine())!=null)
{
out.println("User input:"+inp);//It will send user input to PrintWriter
System.out.println(in.readLine());
}
in.close();
std.close();
out.close();
con.close();
}
catch(Exception e)
{
System.out.println(e.getMessage());
}
}
}
For server sideimport java.net.*;
import java.io.*;
class Server
{
public static void main(String args[])throws IOException
{
ServerSocket ss=null;
try
{
ss=new ServerSocket(4445);
}
catch(Exception e)
{
System.out.print("Sorry can't listen on port 4445");
System.exit(1);
}
Socket cs=null;
PrintWriter out=null;
BufferedReader in=null;
try
{
cs=ss.accept();
out=new PrintWriter(cs.getOutputStream(),true);
in=new BufferedReader(new InputStreamReader(cs.getInputStream()));
}
catch(Exception e)
{
System.out.println(e.getMessage());
System.exit(1);
}
try
{
BufferedReader std=new BufferedReader(new InputStreamReader(System.in));
String input,serve;
while((input=in.readLine())!="Bye")
{
System.out.println("Client says:"+input);
serve=std.readLine();
out.println(serve);
}
}
catch(Exception e)
{
System.out.println("second:"+e.getMessage());
}
}
}The Program is successfull compiled but when i try execute client it simply refuses connection and I got the exception
@sookie-T06sFW • Jan 14, 2010
@sookie-T06sFW • Jan 14, 2010
init:But now I replaced
deps-jar:
compile-single:
run-single:
Sorry Input/output fails
Java Result: 1
BUILD SUCCESSFUL (total time: 1 second)
ss=new ServerSocket(4445);line in your Server.java with
ss=new ServerSocket(32);, it worked like below
init:At client window
deps-jar:
Compiling 1 source file to D:\Java Application\PRACTICE_JAVA\build\classes
compile-single:
run-single:
hi
Client says:User input:hi
hello
Client says:User input:yo !
init:Hope you got the point, if not please read once thoroughly about Socket Programming. I am sure, few articles are here on this forum itself. 😀
deps-jar:
compile-single:
run-single:
hi
hi
yo !
hello
@manish-r2Hoep • Jan 14, 2010
@manish-r2Hoep • Jun 6, 2010
@manish-r2Hoep • Jun 21, 2010
@maro-Ce3knx • Jun 21, 2010
@manish-r2Hoep • Jun 21, 2010
import java.net.*;
import java.io.*;
class Server
{
public static void main(String args[])throws IOException
{
ServerSocket ss=null;
InetAddress is=InetAddress.getLocalHost();
try
{
ss=new ServerSocket(8051,1,is);
}
catch(Exception e)
{
System.out.print(e.getMessage());
System.exit(1);
}
Socket cs=null;
PrintWriter out=null;
BufferedReader in=null;
try
{
cs=ss.accept();
out=new PrintWriter(cs.getOutputStream(),true);
in=new BufferedReader(new InputStreamReader(cs.getInputStream()));
}
catch(Exception e)
{
System.out.println(e.getMessage());
System.exit(1);
}
try
{
BufferedReader std=new BufferedReader(new InputStreamReader(System.in));
String input,serve;
while((input=in.readLine())!="Bye")
{
System.out.println("Client says:"+input);
serve=std.readLine();
out.println(serve);
}
}
catch(Exception e)
{
System.out.println("second:"+e.getMessage());
}
}
}import java.io.*;
import java.net.*;
class Client
{
public static void main(String args[])throws IOException
{
Socket con=null;
PrintWriter out=null;
BufferedReader in=null;
//InetAddress is=null;
try
{
//is=InetAddress.getLocalHost();
con=new Socket("117.205.32.1",8051);//Developed a socket connection by client
out=new PrintWriter(con.getOutputStream(),true);//Write user input to socket
in=new BufferedReader(new InputStreamReader(con.getInputStream()));//Retrieve input from socket
}
catch(UnknownHostException e)
{
System.err.println("Sorry host can't be found");
System.exit(1);
}
catch(IOException ef)
{
System.err.println("Sorry Input/output fails");
System.exit(1);
}
try
{
BufferedReader std=new BufferedReader(new InputStreamReader(System.in));
String inp;
while((inp=std.readLine())!=null)
{
out.println("User input:"+inp);//It will send user input to PrintWriter
System.out.println(in.readLine());
}
in.close();
std.close();
out.close();
con.close();
}
catch(Exception e)
{
System.out.println(e.getMessage());
}
}
}These are changes that i have made
@maro-Ce3knx • Jun 22, 2010
@sookie-T06sFW • Jun 22, 2010
What problem or exceptions you are getting with your current code?goyal420Come on Guys Please help me in this
I am badly stuck to this
How to establish communication between two computers via internet through socket programming?
Please help me
@manish-r2Hoep • Jun 22, 2010
@sookie-T06sFW • Jun 22, 2010
Hi, just now I tried running your code in my machine and my colleague's machine. It worked perfectly fine. Just please make suregoyal420no exception ,no errors at all
when i try to communicate with my friends through this ..
It doesn't work and shows me message "Sorry input/output fails"
I don't understand why?
May be due to wrong port no
But how can i find the port no suitable for this?
con=
new Socket([IP of machine where Server.java is running],8051);//Developed a socket connection by client
@manish-r2Hoep • Jun 22, 2010
@sookie-T06sFW • Jun 22, 2010
LAN & internet should not matter. The only thing is both the machines should be in network. Tonight I will try it in internet also. Then will let you know.goyal420HEY have you Tried it through LAN or internet?
I had tried to make connection through internet .