Video presentation: "Transport layer: Principles of Reliable Data Transfer (Part 1)." Protocol mechanisms for reliable data transfer (rdt). Building an rdt protocol.

Computer networks class.
Jim Kurose
Textbook reading: Section 3.1, Computer Networking: a Top-Down Approach (8th edition), J.F. Kurose, K.W. Ross, Pearson, 2020.
See http://gaia.cs.umass.edu/kurose_ross for more open student resources.