Re: [xml] How to bind multiple IP?

["Pete Cordell" <petexmldev codalogic com>]

If you ever do find the lines of code you need, you will obviously want to 
change the following line:

addr.sin_addr.s_addr = INADDR_ANY;

to specify the particular address you want to bind to.  Presumably you will 
need some sort of algorithm to distribute your set of addresses to the 
sockets.

HTH a bit!

Pete Cordell
Codalogic Ltd
Interface XML to C++ the easy way using XML C++
data binding to convert XSD schemas to C++ classes.
Visit http://codalogic.com/lmx/ or http://www.xml2cpp.com
for more info

----- Original Message ----- 
From: "Brian Kim" <09su research gmail com>
To: "Michael Hanson" <michhans cisco com>; <xml gnome org>
Sent: Tuesday, July 28, 2009 6:49 PM
Subject: Re: [xml] How to bind multiple IP?



Thanks.

Here is a representative sample example of binding a socket.

sd = socket(PF_INET, SOCK_DGRAM, 0);
if ( sd < 0 )
{
  perror("socket");
  exit(1);
}
addr.sin_family = AF_INET;
addr.sin_port = htons(SERVER_PORT);
addr.sin_addr.s_addr = INADDR_ANY;
if ( bind(sd, (struct sockaddr*)&addr, sizeof(addr)) < 0 )
{
  perror("bind");
  exit(1);
}

In libxml2, the sample code used an API, htmlreadfile(URL, ...).
I have checked a source code of that function, but I haven't found any
low level program part.
I think at least I have to know about socket that libxml2 uses
currently, then I can call bind(known_socket, ,,..)
However, i do not where it is.
Could you please tell me how to associate binding sockets with libxml2
library in the source level?

Thanks.


On Tue, Jul 28, 2009 at 12:47 PM, Michael Hanson<michhans cisco com> wrote:
> Brian -
>
> That sort of thing depends on your operating system. As I understand your
> question, you want to simulate multiple TCP/IP clients arriving to a 
> server
> from different IP addresses.
>
> If you are on a *nix-style machine using the BSD sockets API, the system
> call you want is "bind". Normally you don't bind() a client socket, since
> you want the OS to figure it out for you. But if you want to tell the OS
> precisely which IP address to use, the bind call can associate the socket
> with the address.
>
> Best,
> Michael
> --
> Michael Hanson - Principal Engineer, XML Engineering
> michhans cisco com
>
> On Jul 28, 2009, at 9:37 AM, Brian Kim wrote:
>
> > Hi. all.
> >
> > There is a sample program for parsing html from entered URL. I
> > remember it is xmllint.c
> >
> > By the way, as my testing program, I want to simulate "multiple IPs"
> > visits other websites at the same time.
> >
> > By "multiple IPs" I mean, I am going to use a machine which has IP
> > aliasing set up and my test program that I
> >
> > need to create will go to a differenct URL with aliased IP. As a
> > result, a program simulates multiple machines
> >
> > access to different URLs at the same time, even though the program
> > runs in a machine.
> >
> > Is there anybody who knows if I can implement it and how?
> >
> > Thanks.
> > _______________________________________________
> > xml mailing list, project page http://xmlsoft.org/
> > xml gnome org
> > http://mail.gnome.org/mailman/listinfo/xml
_______________________________________________
xml mailing list, project page  http://xmlsoft.org/
xml gnome org
http://mail.gnome.org/mailman/listinfo/xml