NodeJS is great for sending binary data over a TCP socket. I do it
all the time. Only use strings if you want one of the string
encodings of your data. The default is "utf8" which disallows several
bit patterns. Buffers act somewhat like arrays of integers and let
you send exact bytes with full control.
On Wed, Aug 8, 2012 at 9:44 PM, trembl <scoobidoo_...@hotmail.com> wrote:
> Tanks for the answer mr. Noordhuis,
>
> it is effectively as string that i send wich is at the base an array of hex
> values eg:
>
> //=====================================
> var mCmd = new Array(34);
> mCmd[0] = 0x46;
> mCmd[1] = 0x49;
> ...
>
> for (i = 0; i < 34; i++) {
> sFinsCmdRead= sFinsCmdRead+ String.fromCharCode(mCmd[i]);
> }
> //=====================================
>
> The question is how do i use buffer ? Is that as simples as :
>
> //=====================================
>
> buf = new Buffer(str.length);
>
> for (var i = 0; i < str.length ; i++) {
> buf[i] = 0x00+i;
> }
>
>
> client.write(buf);
> //=====================================
>
>
> I will try tomorow if it is the case.
>
> What do you think about if using node.js is the best way to achieve my
> purpose ?
>
> Tell me if i'm not clear.
>
> Thank again
>
>
>
>
>
>
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