Error in this context is a missing packet causing a delay and a request for a retransmit blocking the TCP connection at the OS/Kernel while it waits for the mis

Error in this context is a missing packet causing a delay and a request for a retransmit blocking the TCP connection at the OS/Kernel while it waits for the missing packet before sending it to the application. UDP packets have checksums, its what network switches use to check before sending the packet on or dropping the packet. Other benefit is UDP doesn't have a window size (buffer). Which is part of the design when computers had ram measured in K instead of GB (Hey my buffer is full, stop). The chatty nature of TCP reduces download speeds across larger physical distances. Its why download managers spin up multiple threads to download part of a file to work around it.