Yeah. Fun problem for beginners, because 1) your incorrect code may work for a while when reads/writes are small or it's only run on a local network or such, 2)

Yeah. Fun problem for beginners, because 1) your incorrect code may work for a while when reads/writes are small or it's only run on a local network or such, 2) you might design a broken protocol if you don't understand fragmentation, etc., which will tend to be harder than (say) an isolated client bug to fix, 3) the implementation-dependent nature of fragmentation can make it look like you hit a language/library/OS issue, 4) your language/library may or may not offer tools to help a beginner to implement a delimited or framed wire format properly (ideally with things like record-size limits and timeouts). Not sure it says anything you haven't, but a StackOverflow answer on fragmentation (framed by asker as Go not behaving like C) is one of the more-read ones I've written: https://stackoverflow.com/questions/26999615/go-tcp-read-is-non-blocking/27003111 https://stackoverflow.com/questions/26999615/go-tcp-read-is-...