References
=============

* Wireshark: The world’s foremost network protocol analyzer.  
       https://www.wireshark.org/

* Stevens, W. Richard, et al. *UNIX Network Programming, Volume 1, 3rd Edition*.  
       GitHub repository: https://github.com/unpbook/unpv13e

* Netcat: A simple Unix utility which reads and writes data across network connections,  
       using TCP or UDP. https://nc110.sourceforge.io/   (see also `man nc`)