about bufio ReadBytes block?

[you fu]

the funcion:

godoc bufio

➜  ~  godoc bufio ReadBytes

type Reader struct {

    // contains filtered or unexported fields

}

    Reader implements buffering for an io.Reader object.

func (b *Reader) ReadBytes(delim byte) (line []byte, err error)

    ReadBytes reads until the first occurrence of delim in the input,

    returning a slice containing the data up to and including the delimiter.

    If ReadBytes encounters an error before finding a delimiter, it returns

    the data read before the error and the error itself (often io.EOF).

    ReadBytes returns err != nil if and only if the returned data does not

    end in delim. For simple uses, a Scanner may be more convenient.

if the reader read data from socket,it is block?if not data arrive,i think it block.

but the function doc not illustrate it.

[Dave Cheney]

All Read functions in Go block until at least one byte of data has been received*, can you show me an example which does not?

Dave

* yes, the io.Reader contract admits that returning 0, nil is not an error, but the practice is highly discouraged.

[you fu]

but the doc function is not evident.so ask here?

thanks!