zeromq/libzmq — pull request #773 by hashstat (2013-12-04 22:35:13+00:00)
Title: Add IPC accept filter support

This implements the first option for adding IPC accept filter support in issue [LIBZMQ-568](https://zeromq.jira.com/browse/LIBZMQ-568 "libzmq issue 568"). I tested the SO_PEERCRED version on Linux, but I don't have an OS X box to test the LOCAL_PEERCRED version.