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Re: [OT] a server http

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  Re: [OT] a server http JohnF <john@please.see.sig.for.email.com> - 2011-04-13 11:14 +0000
    Re: [OT] a server http "io_x" <a@b.c.invalid> - 2011-04-13 16:06 +0200

#223 — Re: [OT] a server http

In comp.lang.c io_x <a@b.c.invalid> wrote:
> why my little http server
> is ok for send the right file eg.  file.htm
> but is not ok in send the file     image.gif
> 
> in other words, it can import the file
> and not import the gif image in that page.

Is it compiled for windows? And are you writing
file.htm and image.gif to stdout? I had the same problem
with my own little server <www.forkosh.com/mimetex.html>
getting it to run on windows (in addition to linux).
And you found the problem yourself mentioning \n in one
of your followup posts.

In windows, stdout is ascii, not binary. You have to
#include <fcntl.h> and #include <io.h>, and then
issue a _setmode(_fileno(stdout),O_BINARY) to make it binary
for windows. Otherwise windows gives you the "newline problem",
i.e., every time your gif image happens to contain a byte
that's a carriage return, windows will tack on an extra linefeed
for you. And that'll totally mess up your gif.
-- 
John Forkosh  ( mailto:  j@f.com  where j=john and f=forkosh )

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#225

"JohnF" <> ha scritto nel messaggio news:io40ik$nsi$1@reader1.panix.com...
> In comp.lang.c io_x <a@b.c.invalid> wrote:
>> why my little http server
>> is ok for send the right file eg.  file.htm
>> but is not ok in send the file     image.gif
>>
>> in other words, it can import the file
>> and not import the gif image in that page.

> Is it compiled for windows? And are you writing
> file.htm and image.gif to stdout? I had the same problem
> with my own little server <www.forkosh.com/mimetex.html>
> getting it to run on windows (in addition to linux).
> And you found the problem yourself mentioning \n in one
> of your followup posts.
>
> In windows, stdout is ascii, not binary. You have to
> #include <fcntl.h> and #include <io.h>, and then
> issue a _setmode(_fileno(stdout),O_BINARY) to make it binary
> for windows. Otherwise windows gives you the "newline problem",
> i.e., every time your gif image happens to contain a byte
> that's a carriage return, windows will tack on an extra linefeed
> for you. And that'll totally mess up your gif.

all ok, the problem was for the program that wrote .htm the page.

i consieder all file binary, i wrote all routines for input-output
from OS to all i can imagine...

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