Using a Raspberry Pi Zero, our goal was to create a C application that uses sockets and threads and can interact with other Raspberry Pi's exchanging messages.
More specifically, by using the same SSID network, the devices will belong to the same network and can be searched using their gateway private IP.
Α client/server design was adopted on the same device. As a client, each device was searching for new connections whereas as a server, it accepted new connections. Every incoming and outgoing connection was handled by a new spawned thread. After the establishment of each connection, messages were exchanged and saved in a circular buffer. The general network was a Peer-To-Peer architecture.
The design of my implementation is shown in the following flow chart
