libossp-sa-dev - 1.2.6-3 main

OSSP sa is an abstraction library for the Unix socket application
programming interface (API) featuring stream and datagram oriented
communication over Unix Domain and Internet Domain (TCP and UDP)
sockets. It provides the following key features: address abstraction
(local, IPv4, and IPv6), type abstraction, I/O timeouts, I/O stream
buffering and convenience I/O functions.