May 26, 2018
TCP proxy, demonstrating use of the kevent(2)/kqueue(2) API
bsdproxy is a generic, event-driven proxy designed specifically for the BSD platform. It uses the kqueue/kevent system calls to determine when to relay data from one side of the connection to the other. It also uses GLib http//www.gtk.org data structures and memory management functions to optimize steady-state performance minimize unnecessary memory allocation/deallocation.
bsdproxy has been used to proxy HTTP, HTTPS, telnet, and mysql without any problems. It should be able to serve as a transparent proxy for anything over a TCP/IP connection.