Install libossp-sa-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libossp-sa-dev
Abstraction library for the Unix socket API
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.