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* RE: Where are the socket libraries?
@ 2000-12-08 11:33 Anderjaska, John
  0 siblings, 0 replies; 6+ messages in thread
From: Anderjaska, John @ 2000-12-08 11:33 UTC (permalink / raw)
  To: 'Robert Nail', Alexandre Oliva; +Cc: gcc-help

Hi,

I'll put in my 2 cents on this one.  First of all I don't think
"333.444.555.6" is a valid IP address.  There may be a conversion problem
w/inet_addr.  Also I suspect your assignments of 'serv'.  It also appears
that you did not setup the transport end point.  You might try this:

#include <sys/socket.h>
#include <netinet/in.h>
#define SvrSocketNo 777
#define SIZE sizeof(struct sockaddr_in)

int sockfd;
char c;

struct sockaddr_in server = {AF_INET, SvrSocketNo};
sockfd = (int)socket(AF_INET, SOCK_STREAM,0);
connect(sockfd, (struct sockaddr *)&server, SIZE);
.
.
.
len = send(sockfd, &c, 1, 0);
**************************************************

Good Luck .. John

*************************************************

The source I have is below:

The error messages I get when trying to gcc this stuff is:

request for member "sin_family" in something not a structure or union
request for member "sin_addr" in something not a structure or union
request for member "sin_port" in something not a structure or union

The only place I can find sin_family and such is on /usr/include/linux/in.h.
I have tried to include <linux/in.h> but it makes no difference.  All help
will be appreciated.  Thanks

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>


main()
{
 int i,j;
 int sock1;
 char ibuf[BUFSIZ];

 struct sockaddr *serv;
 memset(&serv,0,sizeof(serv));

 serv.sin_family = AF_INET;
 serv.sin_addr.s_addr = inet_addr("333.444.555.6");
 serv.sin_port = htons(777);

 if(connect(sock1, (struct sockaddr*) &serv,sizeof(serv)) < 0)
  printf("Error on connect\n");

 i = write(sock1,"This is test1",13);
 i = read(sock1,ibuf,20);
 printf("Ibuf: %s\n",ibuf);
}


----- Original Message -----
From: "Alexandre Oliva" <aoliva@redhat.com>
To: "Robert Nail" <robert.nail@entact.net>
Cc: <gcc-help@gcc.gnu.org>
Sent: Thursday, December 07, 2000 10:36 AM
Subject: Re: Where are the socket libraries?


> On Dec  7, 2000, "Robert Nail" <robert.nail@entact.net> wrote:
>
> > I try to link a simple socket program for Linux 6.0 but it can't find
the
> > SOCKADDR structure.
>
> This will list the header files you may have to include to get its
> definition:
>
> grep -l -r SOCKADDR /usr/include
>
> Then, you may have to link your program with some libraries (!= header
> files) to get definitions of whatever functions you use.
>
> --
> Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
> Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
> CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
> Free Software Evangelist    *Please* write to mailing lists, not to me

^ permalink raw reply	[flat|nested] 6+ messages in thread
* [A] It works! : How to create objects of a class defined in .so file?
@ 2000-12-07  6:16 Rajesh Lolam
  2000-12-07  7:24 ` Where are the socket libraries? Robert Nail
  0 siblings, 1 reply; 6+ messages in thread
From: Rajesh Lolam @ 2000-12-07  6:16 UTC (permalink / raw)
  To: gcc-help

Hi all,
	When I started the work, the issues were
1> How to create objects of a class defined in .so file?
2> How to call methods of a class defined in .so file?
	It is possible with (what I think as) a work-around.
	One has to write a wrapper-function, which will 
create objects of a class (which you want to define in
the .so file). The same way you can access the class
methods. After doing this, encapsulate this wrapper
function in the same .so file. 
	The wrapper function can be dynamically linked
using dlfcn.h family functions.
	This way, the objects can be created with the
help of Wrapper-function.
Regards,
Rajesh.
<rajeshlolam@rediffmail.com>
=========================================================



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^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2000-12-08 13:20 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2000-12-08 11:33 Where are the socket libraries? Anderjaska, John
  -- strict thread matches above, loose matches on Subject: below --
2000-12-07  6:16 [A] It works! : How to create objects of a class defined in .so file? Rajesh Lolam
2000-12-07  7:24 ` Where are the socket libraries? Robert Nail
2000-12-07  8:36   ` Alexandre Oliva
2000-12-08  6:56     ` Robert Nail
2000-12-08 13:20       ` Alexandre Oliva
2000-12-07 21:11   ` Curtis R Anderson

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