radius proxy patch

Hi,

We would like to share this change that we made to
radius/radius_acct.c.  We had the problem that sometimes the real
RADIUS server's response gets lost.  This change basically adds a
40millisecond wait for the response... has been running on our live
system for 2 days now...

    // make the client socket non-blocking
    fl = fcntl(cs, F_GETFL);
    fcntl(cs, F_SETFL, fl | O_NONBLOCK);

        if ((remote_host != NULL) && forward) {
            if (udp_sendto(cs, data, addr) == -1) {
                error(0, "RADIUS: Couldn't send to remote RADIUS <%s:%ld>.",
                      octstr_get_cstr(remote_host), remote_port);
            } else {
              if (read_available(cs, 40000) < 1) {
                error(0, "RADIUS: timeout waiting for response from
remote RADIUS <%s:%d>.",
                      octstr_get_cstr(remote_host), remote_port);
              } else {
                if (udp_recvfrom(cs, &data, &from_radius) == -1) {
                  error(0, "RADIUS: Couldn't receive from remote
RADIUS <%s:%ld>.",
                        octstr_get_cstr(remote_host), remote_port);
                } else {
                  info(0, "RADIUS: Got data from remote RADIUS <%s:%d>.",
                       octstr_get_cstr(udp_get_ip(from_radius)),
udp_get_port(from_radius));
                  octstr_dump(data, 0);

                  /* XXX unpack the response PDU and check if the response
                   * authenticator is valid */
                }
              }
            }
        }