Blocking read from input file continuous streaming

I have a file open that I am constantly writing to in Golang and reading in julia live. For some reason my code fails that it read EOF at the first blocking read. What am I doing wrong?

  ERROR: LoadError: EOFError: read end of file

  R.buffer = open("data/live.bin", "r")

  if !isopen(R.buffer)
    return nothing
  end

  # Error is here, why would it say EOF if the file is still being written to and open?
  # Read the length in first 4 bytes
  msglen = read(R.buffer, UInt32)

  # Then read up to that length
  bytes = read(R.buffer, msglen)

Note the file is still open by golang while julia is reading.

It gets traced to an error on line 399 here https://github.com/JuliaLang/julia/blob/5584620db87603fb8be313092712a9f052b8876f/base/iostream.jl#L399

I have a feeling I need to ccall some methods to get this working.

And here is the golang code

enc, err := os.OpenFile("data/live.bin", os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0660)
if err != nil {
    log.Error("Error in File Create!", err.Error())
    panic(err)
}
msgLen := make([]byte, 4)
for {
    msg := []byte("mymessage")
    binary.LittleEndian.PutUint32(msgLen, uint32(len(msg)))
    _, err := enc.Write(msgLen)
    if err != nil {
        log.Fatal(err)
    }
    // Write message
    _, err = enc.Write(msg)
    if err != nil {
        log.Fatal(err)
    }
    time.Sleep(5 * time.Second)
}