[Gambas-user] using sockets to send binay files

[Ricardo Díaz Martín]

Thanks Olivier for your reply. I discovered last night binary files can be
sent as text files if you "uuencode" on before sending and "uudecode" after
files are received.

uuencode and uudecode are unix standards commands (they are in Ubuntu
repositories and in Mac OX too)

The code you put in your mails only works with text files.

Regards,
Ricardo Díaz




2010/4/11 Olivier Cruilles <linuxos at ...1896...>

>
> Hi,
>
> May be this email can help you.
>
> ---------------------------------------------------------------
>
>
> On Mon, 1 Dec 2008 06:50:06 am Robert Moss wrote:
>
> Robert this may not be much help to you and I'm not sure how related to
> your
> problem it is,  but just on the off chance. I struggled with saving a
> picture
> and retrieving from a postgres field.
>
> The code I included worked really well for a long time, but in the last
> couple
> of upgrades though it saves the file ok, it retreives a corrupt image. and
> I
> get a libpng error (sob sob) and I havn't had time or inclination to
> re-look
> at it.
>
> Please if/when you figure it out can I have a few pointers.
>
> Regards
>
> Richard
>
>
>
> > The ImgData stops writing when it comes to a byte with value &H00 (I
> > believe) although I'm pretty sure it doesn't matter how I write the
> stream,
> > once it's read as a String, it becomes terminated by any NULL char. So my
> > question is this: How do I read the data from the Socket in binary, write
> > it to a stream file in binary, but STILL I MUST be able to split the data
> > based on the 2 CRLF's
> >
> > On Sun, Nov 30, 2008 at 11:48 AM, Robert Moss
> <the.at.robert at ...626...>wrote:
> >> Sorry that's not it, I mis-copied the line, in the actual code it does
> >> Mid(sData, p1 + 4)
> >>
> >> On Sun, Nov 30, 2008 at 2:39 AM, Doriano Blengino <
> >>
> >> doriano.blengino at ...1909...> wrote:
> >>> Robert Moss ha scritto:
> >>>> I am trying to get an image (or any binary data) downloaded from a
> >>>
> >>> website
> >>>
> >>>> and into a jpg file. I expect I will need to use the Byte[] datatype,
> >>>
> >>> but I
> >>>
> >>>> absolutely can NOT use Callbacks when the data comes in this time.
> >>>>
> >>>> ...
> >>>>
> >>>> DO UNTIL(EOF(#Sock))
> >>>>    READ #Sock, sBuf, Lof(Sock)
> >>>>    sTotal &= sBuf
> >>>> LOOP
> >>>>
> >>>> CLOSE #Sock
> >>>>
> >>>>
> >>>> p1 = InStr(sTotal, "\r\n\r\n")
> >>>>
> >>>> ImgData = Mid(sTotal, p1)
> >>>>
> >>>> OPEN "localimg.jpg" FOR OUTPUT CREATE AS #myFile
> >>>> WRITE #myFile, ImgData, Len(ImgData)
> >>>> CLOSE #myFile
> >>>
> >>> I think there is a problem with InStr(...,"\r\n\r\n").
> >>> By taking mid$(...,p1), you retain the two CRLFs, which are not good at
> >>> the beginning of a jpeg file.
> >>> You should get rid of the first 4 characters. May be there are still
> >>> other problems, but this is one for sure.
> >>>
> >>> Regards,
> >>>
> >>> --
> >>> Doriano Blengino
> >>>
> >>> "Listen twice before you speak.
> >>> This is why we have two ears, but only one mouth."
> >>>
> >>>
> >>>
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>
> Le 10 avr. 2010 à 23:15, Ricardo Díaz Martín a écrit :
>
> >
> > Hi,
> >
> > Is there some way to send binary files using gambas sockets? Reading and
> > sending byte per byte is too much slow.
> >
> > I read old post from Benoit about this and I think it's no possible at
> this
> > time. It's true?
> >
> > Regards,
> > Ricardo Díaz
> >
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>
> Olivier Cruilles
> Mail: linuxos at ...1896...
>
>
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