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Posted to dev@mina.apache.org by gcsaba2 <gc...@freemail.hu> on 2007/08/08 20:49:02 UTC

Can't make a simple client application

Hello,

I've just downloaded and wanted to make a simple client application that
connects to a server, and can send and receive text. I was using the NetCat
example on Apache's web site
(http://svn.apache.org/viewvc/mina/branches/1.0/example/src/main/java/org/apache/mina/example/netcat/Main.java?revision=555855&view=markup).

However for some reason it just doesn't seem to work. I use Java 1.4, so I'm
using Mina 1.0.4, Backport util 3.0 and NLog4J 1.2.25

Nothing seems to happen. The program doesn't even try to connect to the
server. I was using a TCP listener to see what's going on and the client
didn't even try to connect to the server.

The following is the source code of the entire application. Could someone
tell me what's wrong here?
Nothing is printed out on the screen.

Thanks in advance, Csaba


// Created on Aug 8, 2007

import java.io.*;
import java.net.*;
import org.apache.mina.common.*;
import org.apache.mina.transport.socket.nio.*;

public class MinaTest {

	public static void main(String[] args) throws Exception {
		
		SocketConnector connector = new SocketConnector();
		
		((IoConnectorConfig)connector.getDefaultConfig()).setConnectTimeout(30);
		
		IoSession session = connector.connect(new
InetSocketAddress("www.google.com",80), new
MyProtocolHandler()).getSession();
		
		/*  this was supposed to send text to the server - I removed it after it
didn't work
		String msg = "";
		BufferedReader stdin = new BufferedReader(new
InputStreamReader(System.in));
		while (msg != null && !msg.equals("quit")) {
			System.out.println(session);
			msg = stdin.readLine();
			session.write(msg);
		}
		
		session.close();
		*/
	}
	
	private static class MyProtocolHandler extends IoHandlerAdapter {
		
		public void sessionOpened(IoSession session) {
			System.out.println("Started");
		}
		
		public void sessionClosed(IoSession session) {
			System.out.println("Finished");
		}
		
		public void sessionIdle(IoSession session, IdleStatus status) {
			System.out.println("Connection idle");
		}
		
		public void messageReceived(IoSession session, Object message) {
			ByteBuffer buf = (ByteBuffer) message;
			
	        // Print out read buffer content.
			System.out.print("S = ");
	        while (buf.hasRemaining()) {
	            System.out.print((char) buf.get());
	        }
	        
	        System.out.flush();
		}
		
	}
}

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Re: Can't make a simple client application

Posted by Trustin Lee <tr...@gmail.com>.

The following message was not delivered due to temporary DNS problem
with apache domains:

On 8/15/07, Trustin Lee <tr...@gmail.com> wrote:
> On 8/15/07, Mark <el...@gmail.com> wrote:
> > I updated the Quick Start Guide.  The changes are periodically pushed up to
> > the site, so maybe in an hour or so you should see the changes.
>
> Thanks, Mark! :)
>
> Trustin
> --
> what we call human nature is actually human habit
> --
> http://gleamynode.net/
> --
> PGP Key ID: 0x0255ECA6
>


-- 
what we call human nature is actually human habit
--
http://gleamynode.net/
--
PGP Key ID: 0x0255ECA6

Re: Can't make a simple client application

Posted by Mark <el...@gmail.com>.

I updated the Quick Start Guide.  The changes are periodically pushed up to
the site, so maybe in an hour or so you should see the changes.

On 8/14/07, Mark <el...@gmail.com> wrote:
>
> I will take care of this problem tonight.
>
> --
> ..Cheers
> Mark
>
> On 8/14/07, Trustin Lee <tr...@gmail.com> wrote:
> >
> > On 8/10/07, gcsaba2 <gc...@freemail.hu> wrote:
> > >
> > >
> > > Mark Webb-4 wrote:
> > > >
> > > > which tutorial are you talking about?  To my knowledge, all the
> > tutorials
> > > > work as documented.
> > > >
> > >
> > > They work, but there is no mention of what exactly the
> > ProtocolCodecFilter
> > > does, and because of this I didn't think it was important.
> >
> > Hmm, it seems like we'd better add a few more lines what that line
> > does very briefly and provide a link to our protocol codec tutorial.
> >
> > Trustin
> > --
> > what we call human nature is actually human habit
> > --
> > http://gleamynode.net/
> > --
> > PGP Key ID: 0x0255ECA6
> >
>
>


-- 
..Cheers
Mark

Re: Can't make a simple client application

Posted by Mark <el...@gmail.com>.

I will take care of this problem tonight.

-- 
..Cheers
Mark

On 8/14/07, Trustin Lee <tr...@gmail.com> wrote:
>
> On 8/10/07, gcsaba2 <gc...@freemail.hu> wrote:
> >
> >
> > Mark Webb-4 wrote:
> > >
> > > which tutorial are you talking about?  To my knowledge, all the
> tutorials
> > > work as documented.
> > >
> >
> > They work, but there is no mention of what exactly the
> ProtocolCodecFilter
> > does, and because of this I didn't think it was important.
>
> Hmm, it seems like we'd better add a few more lines what that line
> does very briefly and provide a link to our protocol codec tutorial.
>
> Trustin
> --
> what we call human nature is actually human habit
> --
> http://gleamynode.net/
> --
> PGP Key ID: 0x0255ECA6
>