It is a magnificent lecture that needs no words. I can feel the decades of expertise, and I look forward to your other lectures as well. I think I'll have to watch it one more time.

amazing

I happened to take charge of modernizing a TCP/socket communication library product this time, so I hurriedly bought and finished the entire course. I realized that I didn't even really know what a socket was. Thanks to you, I received great help in understanding the overall picture and principles. Thank you.

To think you summarized it all with just a single drawing...