Forums | MacLife

Elahrairah · 2009-01-27 2:23 pm

Hey everyone,
learning internet programming right now, and I'm working with send files over sockets. But everywhere I look, it looks like I need sys/sendfile.h, which apparently is not supported on macs...

So, I need either a library repository where I can download and install libc6-dev (which contains the file, I believe),
or some other way to get sendfile.h up and running in my system.

Anybody ever run into this?

resedit · 2009-01-27 2:43 pm

I believe that is part of the php source as well - do you have all of the dev tools installed?

resedit · 2009-01-27 3:27 pm

Sorry - I read that as sendmail.h, not sendfile.h
sendfile.h should be part of your C library headers. I'm sure the the Apple C library has it as part of their C library, and you probably want to use theirs. It should be installed with the dev tools.

resedit · 2009-01-27 3:32 pm

Ouch - http://mail-archives.apache.org/mod_mbo … park.de%3E

Nevermind.

Get a real OS wink

Or you could install glibc on OS X - or find the OS X libc way to accomplish the same task.

Elahrairah · 2009-01-27 5:51 pm

resedit wrote:
Get a real OS

Or you could install glibc on OS X - or find the OS X libc way to accomplish the same task.

I hear yeh. If I had any room on my hard drive, I would.

Hey wait, I'm on tiger... I can't even dual boot, can I? Dangit.

Last edited by Elahrairah (2009-01-27 6:38 pm)

Miles · 2009-01-27 6:55 pm

sendfile(2) in 10.5

You don't need sendfile to send a file over a socket, it just makes it more efficient (and possibly easier). This code should work perfectly well (but is untested):

Code:

#include <stdio.h>
#include <err.h>
#include <sys/types.h>
#include <sys/socket.h>
#define BUFSIZE 1024

int sd; /* socket descriptor */
FILE *fh; /* file handle */

/* ... open socket, file here ... */

char buffer[BUFSIZE];
size_t bytes_read;

while ((bytes_read = fread(buffer, 1, BUFSIZE, fh) != 0) {
    ssize_t bytes_sent, rv;
    bytes_sent = 0;
    while (bytes_sent < bytes_read) {
        rv = send(sd, buffer + bytes_sent, bytes_read - bytes_sent, 0);
        if (rv < 0) err("socket send() failed");
        bytes_sent += rv;
    }
}

Elahrairah · 2009-01-27 7:24 pm

Miles wrote:
sendfile(2) in 10.5

I'm in Tiger, but thanks... now manually writing sendfile...

Forums | MacLife

#1 2009-01-27 2:23 pm

The infamous sendfile.h problem...

#2 2009-01-27 2:43 pm

Re: The infamous sendfile.h problem...

#3 2009-01-27 3:27 pm

Re: The infamous sendfile.h problem...

#4 2009-01-27 3:32 pm

Re: The infamous sendfile.h problem...

#5 2009-01-27 5:51 pm

Re: The infamous sendfile.h problem...

resedit wrote:

#6 2009-01-27 6:55 pm

Re: The infamous sendfile.h problem...

Code:

#7 2009-01-27 7:24 pm

Re: The infamous sendfile.h problem...

Miles wrote:

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