http://www.cs.tau.ac.il/~eddiea/samples/TCP-Simple/tcp-simple-server.c.html
https://www.cs.cmu.edu/afs/cs/academic/class/15213-f99/www/class26/tcpserver.c
https://gist.github.com/cj1128/e6620df2ea2e650164d7513b05c88c8c
https://aticleworld.com/socket-programming-in-c-using-tcpip/

