Jake,
Thanks for the reply. Csrc.Read is what I was referring to as the
connection standard read, should not have used the words "standard read"
sorry about that. The problem I am trying to solve is reading an unknown
amount of byte data. I am trying to understand what triggers the
Csrc.Read(buf) to return when I send say 3 bytes to it with a client, I
also keep the connection open and send a few bytes of characters with the
netcat tool, the Csrc.Read returns, but the snip it below that with ReadAll
does not return. I am trying to understand the underlying behavior of what
triggers a return with the data in these two calls ?
on this read :
Csrc net.Conn
buf := make([]byte, 1024*32)
// READ FROM CLIENT
nBytes, err := Csrc.Read(buf)
Csrc.Read(buf) returns with a few bytes that I send to it. It does not
wait for the entire allocated buf size to return. This works great, but I
am looking for a way to not preallocate a large buffer.
I am prototyping with ReadAll, see the following snip it, but when I send a
few bytes to this call with a client, it does not return. The
documentation is saying it may be looking for an EOF which I do not send.
buf, read_err := ioutil.ReadAll(Csrc)
thanks,
Ron
On Friday, December 27, 2019 at 5:11:42 PM UTC-7, Ron Wahler wrote:
>
> I am looking for a net.conn standard read that would return a data buffer
> the exact size of the read. I am trying to read an unknown amount of byte
> data from the connection. With the read i am using I am required to
> pre-allocate a buffer and pass that buffer to the read. I am looking for a
> read that works more like the ReadString , but is for a byte slice.
>
> // I want something similar to this read that returns the read string into
> the message string.
>
> message, err := bufio.NewReader(ServerConn).ReadString('\n')
>
> if ( err != nil ){
>
> fmt.Println("RELAY: ERROR: Reg Message read
> err:", err)
>
> return
>
> }
>
>
>
> // had to preallocate a buffer, but I want a read to return me a buffer so
> I don't have to guess how big to make it.
>
> buf := make([]byte, 1024*32)
>
> // READ FROM CLIENT
>
> nBytes, err := Csrc.Read(buf)
>
>
>
> Is this not possible, I have not seen any examples that would indicate
> that there is a standard library that would do something like what I am
> looking for.
>
>
> thanks,
>
> Ron
>
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