Correct use of bufio.Reader

[TH]

Hey,

I have a TCP client which reads data from server. Each message is ; delimited. I wonder what's the correct way to use bufio.Reader, as I'm getting empty messages.

reader := bufio.NewReader(conn)

for {

    msg, err := reader.ReadBytes(59) // ; as delimiter

    if err == nil {

        fmt.Printf("%v\n", string(msg))

    }

}

So sometimes I will get a msg that's only ";". I wonder if bufio.Reader can be re-used as I do it on my for loop? Or are there any handy packages that I could use to parse the ";" delimiter?

I tried to write my own parser, but somehow bufio.Reader is like 3-4x faster even I thought I had an optimized code.

Thanks

- TH

[Axel Wagner]

That code seems to be correct (except that you might want a `if err != nil { break }` in there). I would say the reason you get empty messages is because the other side is sending you empty messages.

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[kristo]

Some data might have been read even if err != nil. Maybe always printing
out msg could give you a hint?

https://pkg.go.dev/bufio#Reader.ReadBytes