Hi, folks:
Ok - I figured it out after some digging. The secret is to bind the
acceptor to just a port - let the system pick the ip address. This uses
the "wildcard" ip address which will receive any datagrams broadcast on
the port.
I found this in the most obvious place of all (yes - it is always in the
last place you look..) - the javadoc for DatagramSocket:
http://java.sun.com/j2se/1.5.0/docs/api/java/net/DatagramSocket.html
So the Mina code looks something like this (so easy once you know how):
int ipPort = 9999;
// motherhood stuff - just a test IoHandler
DatagramAcceptor acceptor = new NioDatagramAcceptor();
acc.setHandler(new IoHandlerAdapter() {
public void messageReceived(IoSession session, Object obj)
throws Exception {
log.debug("received " + obj + " on " +
session.getLocalAddress());
}
});
// the magic ingredient - set *just the port*
log.debug("binding listener to wildcard address + port " + ipPort);
acceptor.bind(new InetSocketAddress(ipPort));
Hope this is of use to someone.
Thanks again for a super framework.
Yigal Rachman
Yigal Rachman wrote:
Hi, Folks:
I have tried the MINA 2.0 UDP example - it works great!
As luck would have it, my UDP application is different from the
example. I need to receive UDP datagrams that are being broadcast on
the subnet by an existing system. I have researched this on the Web
and tried a number of different ways to do it, but have not yet
figured it out. In particular, I do not know how to set up a
DataGramAcceptor to do this.
I would welcome any help / suggestions that you may have.
Thank you,
Yigal Rachman
