Re: [javagroups-users] Linux problem...

[<jc...@as...>]

ok i have changed the UDP.java code to this.... (only added some =
trace.fatal
functions)

void createSockets() throws Exception {
        InetAddress tmp_addr=3Dnull;
        Trace.fatal("UDP.createSockets()", "1");
        send_sock=3Dnew DatagramSocket();
        if(bind_addr !=3D null || bind_port > 0) {
            Trace.fatal("UDP.createSockets()", "2");
            if(bind_addr =3D=3D null && bind_port > 0)
             {
                Trace.fatal("UDP.createSockets()", "3");
                ucast_recv_sock=3Dnew DatagramSocket(bind_port);
             }
            else if(bind_addr !=3D null && bind_port > 0)
             {
                Trace.fatal("UDP.createSockets()", "4");
                ucast_recv_sock=3Dnew DatagramSocket(bind_port, =
bind_addr);
             }
        }
        Trace.fatal("UDP.createSockets()", "5");
        if(ucast_recv_sock =3D=3D null)
         {
            Trace.fatal("UDP.createSockets()", "6");
            ucast_recv_sock=3Dnew DatagramSocket();
         }

        local_addr=3Dnew IpAddress(ucast_recv_sock.getLocalPort());

        if(ip_mcast) {
            mcast_sock=3Dnew MulticastSocket(mcast_port);
            mcast_sock.setTimeToLive(ip_ttl);
            Trace.fatal("UDP.createSockets()", "7");
            // bind_addr not set, try to assign one by default. This is
needed on Windows
            // @todo: replace this code in JDK 1.4 with
java.net.NetworkInterface API
            if(bind_addr =3D=3D null) {
                Trace.fatal("UDP.createSockets()", "7.1");
                InetAddress[]
interfaces=3DInetAddress.getAllByName(InetAddress.getLocalHost().getHostA=
ddres
s());
                if(interfaces !=3D null && interfaces.length > 0)
                    bind_addr=3Dinterfaces[0];
            }
           Trace.fatal("UDP.createSockets()", "8");
           if(bind_addr !=3D null)
                mcast_sock.setInterface(bind_addr);
            Trace.fatal("UDP.createSockets()", "9");
            tmp_addr=3DInetAddress.getByName(mcast_addr_name);
            Trace.fatal("UDP.createSockets()", "10");
            mcast_addr=3Dnew IpAddress(tmp_addr, mcast_port);
            Trace.fatal("UDP.createSockets()", "11");
            mcast_sock.joinGroup(tmp_addr);
            Trace.fatal("UDP.createSockets()", "12");
        }
        Trace.fatal("UDP.createSockets()", "13");
        setBufferSizes();

        if(Trace.trace) {

.............

And the output is this...

[root@Merlin protocols]# java org.javagroups.demos.Draw
[11:08:32[475]] [INFO] UDP.startWork(): creating sockets and starting
threads
[11:08:32[589]] [FATAL] UDP.createSockets(): 1
[11:08:32[632]] [FATAL] UDP.createSockets(): 5
[11:08:32[634]] [FATAL] UDP.createSockets(): 6
[11:08:32[671]] [FATAL] UDP.createSockets(): 7
[11:08:32[673]] [FATAL] UDP.createSockets(): 7.1
[11:08:32[675]] [FATAL] UDP.createSockets(): 8
[11:08:32[677]] [FATAL] UDP.up(): exception creating sockets:
java.net.SocketException: Cannot assign requested address

So its seems that the bin_addr is null and then it cant assign one by
default...

----- Original Message -----
From: "Bela Ban" <be...@nm...>
To: "Jorge Cust=F3dio" <jc...@as...>
Sent: Wednesday, June 12, 2002 7:49 PM
Subject: Re: [javagroups-users] Linux problem...


> Jorge Cust=F3dio wrote:
>
> > ok i have located the problem, its on the
> >
> > ....
> > mcast_sock.setInterface(bind_addr)
> > ....
> >
> > so its a problem in the multicast ? maybe some other program is =
already
> > using it ?
>
> Check whether you use bind_addr also for unicast sockets
>
> --
> Bela Ban
> Fujitsu Network Communications
> (408) 895-1732
>
>
>