Interesting, we needed you here for the conversation. I guess the naming conflict is still an issue if we want to reach people outside of our echo chamber. 

Do you mean handshakes with a DHCP server?

https://medium.com/@sajerestan/demystifying-the-dhcp-four-way-handshake-how-your-devices-connect-to-the-internet-a52f0c553a53

I also found some handshake stuff related to TCP:
https://www.geeksforgeeks.org/tcp-3-way-handshake-process/ 

 Sorry, I googled it myself and I didn't realize it's such difficult to find.
So here it goes: https://handshake.org
The idea originated from Aaron Swartz: http://www.aaronsw.com/weblog/squarezooko