I have a question

[liuandy]

Dear my friends,

I have a question in using MINA. I use 'NioDatagramConnector' to send a message to server side and use 'NioDatagramAcceptor' to receive it. In server side , I define a class 'UdpServerHandler' to handle the message.

Question
    the function, which is called 'messageReceived', in my handler class. Can I use 'session.write()' to send a message to client? Or, I must write a connector in server side to connect the client side?

Code
    @Override
    public void messageReceived(IoSession session, Object message)
            throws Exception {
        if (message instanceof LoginRequestMessage) {
            LoginRequestMessage m = (LoginRequestMessage) message;
            System.out.println(m.getUsername());
            System.out.println(m.getPassword());
           
            LoginResponseMessage resp = new LoginResponseMessage();
            resp.setType(1);
            session.write(resp);
        }
    }

    The 'LoginRequestMessage' and 'LoginResponseMessage' is defined by me.

I run my program. But the result is that the client don't receive the message and log displays that server really sends the message.

How can I solve this problem?

Thank you!

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[Emmanuel Lecharny-3]

liuandy wrote:
>
> Dear my friends,
>
> I have a question in using MINA. I use 'NioDatagramConnector' to send a message to server side and use 'NioDatagramAcceptor' to receive it. In server side , I define a class 'UdpServerHandler' to handle the message.
>
> Question
>     the function, which is called 'messageReceived', in my handler class. Can I use 'session.write()' to send a message to client? Or, I must write a connector in server side to connect the client side?
>  
the channel is open in both ways. You should be able to read and write
on the server.

> Code
>     @Override
>     public void messageReceived(IoSession session, Object message)
>             throws Exception {
>         if (message instanceof LoginRequestMessage) {
>             LoginRequestMessage m = (LoginRequestMessage) message;
>             System.out.println(m.getUsername());
>             System.out.println(m.getPassword());
>            
>             LoginResponseMessage resp = new LoginResponseMessage();
>             resp.setType(1);
>             session.write(resp);
>         }
>     }
>
>     The 'LoginRequestMessage' and 'LoginResponseMessage' is defined by me.
>
> I run my program. But the result is that the client don't receive the message and log displays that server really sends the message.
>  

It should work.
> How can I solve this problem?
>  
Does the client read the response ?

--
--
cordialement, regards,
Emmanuel Lécharny
www.iktek.com
directory.apache.org