🚀 go-pugleaf

I am developing an application that is using SUN RPC.
The server may be contacted by many different clients,
and needs to know who they are.  My man page says that
svc_getcaller() is the way to do this:

     struct sockaddr_in * svc_getcaller(xprt)
     SVCXPRT *xprt;

          The approved way of getting the network address of  the
          caller  of  a procedure associated with the RPC service
          transport handle, xprt.


I tried to use svc_getcaller() as follows (for non-C++ programmers,
think of cout << as a print()).  This *doesn't* work.  I always get
the same family, port, and addrs printed out, even when I have
two clients on different machines.  They all look like nonsense
values.  Am I doing something wrong?  Has anyone else gotten
this to work?

/******************************************************************/
struct sockaddr_in old_caller;

	/* .
	   .
	   . */
int
check_caller(CLIENT * cl)
{
        struct sockaddr_in *caller = svc_getcaller((SVCXPRT *) cl);
        cout << "caller: family: " << (unsigned short) caller->sin_family
        							<< "\n";
        cout << "caller: port:   " << caller->sin_port << "\n";
        cout << "caller: addr:   " << (char *) inet_ntoa(caller->sin_addr)
        							<< "\n";
        if ((caller->sin_family == old_caller.sin_family) &&
            (caller->sin_port == old_caller.sin_port) &&
            (caller->sin_addr.s_addr == old_caller.sin_addr.s_addr)) {
                 cout << "callers are the same\n";
                return (1);
        } else {
                cout << "callers are different\n";
                old_caller = *caller;
        }
        return (0);
};
/******************************************************************/

Thanks for any help.

Mike Wagner
wagner@cs.unc.edu



-- 
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michael paul wagner
wagner@hatteras.cs.unc.edu		ahlan wa sahlan
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