Re: Socket Send Binary (Jpeg)

From:
"Jim Langston" <tazmaster@rocketmail.com>
Newsgroups:
comp.lang.c++
Date:
Wed, 21 Feb 2007 23:49:51 -0800
Message-ID:
<JWbDh.839$z13.689@newsfe02.lga>
"iwasinnihon" <iwasinnihon@hotmail.com> wrote in message
news:1172120387.820088.308230@t69g2000cwt.googlegroups.com...

On Feb 21, 9:23 pm, Ian Collins <ian-n...@hotmail.com> wrote:

iwasinnihon wrote:

Thank you for your help thus far. I have changed it from strlen() to
gcount(). Now I am getting part of the picture. Why can't I get the
entire picture?


Please retain the context of the part of the message you are replying to.

Have a think about what happens to BytesIndex each time something is
read.

--
Ian Collins.


You guys have really been helpful. I have altered my code to be as
seen below. It works fine for text documents and jpegs. But, it
won't work for Gifs or PNGs. It only displays part of the picture.
Any ideas why?

while( !file.eof() ) {
char buffer[1024] = "";
int BytesSent = 0;
int BytesIndex = 0;
file.read(buffer, 1024);
int BytesLeft = file.gcount();
while(BytesLeft != 0){
BytesSent = send(sock, &buffer[BytesIndex], BytesLeft, 0);
BytesLeft -= BytesSent;
BytesIndex +=BytesSent;
}
}


What is gcount? If you read a full block of data, it would be 1024 bytes.
How does gcount reflect this? Does gcount reflect, somehow, how much data
you actually read?

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