* addressing — rv protocol is different from tcp/ip socket. No IP addresses. Rather, rv uses
** Subject-based addressing — For programs to communicate, they must agree upon a subject name at which to rendezvous (hence the name of this product). Subject-based addressing technology enables anonymous rendezvous, an important breakthrough
* rvd — is the name of the daemon. in most environments, one daemon process runs on each host computer.
* transport — one of the most important java classes to developers like us. There’s no jms counterpart, but the best you can get is the Session object + physical delivery options.
* unicast vs multicast. No other choice.
** multicast is prevalent
** unicast — sends a msg to exactly one Unix process id. point to point. inbox name