Golang从net.TCPConn读取字节

Question

Is there a version of ioutil.ReadAll that will read until it reaches an EOF OR if it reads n bytes (whichever comes first)?

I cannot just take the first n bytes from an ioutil.ReadAll dump for DOS reasons.

Answer 1

io.ReadFull or io.LimitedReader or http.MaxBytesReader.

If you need something different first look at how those are implemented, it'd be trivial to roll your own with tweaked behavior.