On Sun, Jan 30, 2011 at 8:46 AM, Dannoy Lee <dannoy.lee at gmail.com> wrote: > > 1. I wanna use identity without using durable socket, Is the right way > is set hwm = 1? HWM and identity are two independent concepts. If you set an explicit identity, you create a durable socket. If you set the HWM you limit the size of the message buffer. -Pieter