[AD] Problem with Allegro (NetBSD) and socket

[Omar Cornut <cornut_o@xxxxxxxxxx>]

Hello,

I have a problem to report with Allegro for Unix.
I'm using at school (as a standard user) a NetBSD 1.4.2 running on PC.
Allegro was compiled using the following configuration:

./configure --enable-shared=no --enable-static=yes --enable-ossdigi=no
--enable-alsadigi=no --enable-alsamidi=no --enable-esddigi=no
--enable-ossmidi=no --enable-xwin-dga=no --enable-xwin-dga2=no
--enable-vbeaf=no --enable-svgalib=no --enable-fbcon=no --enable-vga=no
--enable-linux=no

(In short: compiled static library only, and most 'multimedia' stuff
were taken out.)


-> The problem is when using sockets on an Allegro program.

   Once I open a socket (using the standard socket() function provided
   with the operating system), selecting it always tells me something 
   has been written to the socket (=new connection) if Allegro was 
   initialized.

   Accepting the connection (using 'accept()') blocks the program,
   since there's not really an upcoming connection.

It is obviously a problem since any server program can not function
properly because of this.

The simple program below demonstrates the bug.
It can compile as is.

On my system, running it produces a result such as:

	select()
	New connection -> ERROR!
        select()
        New connection -> ERROR!
        select()
        New connection -> ERROR!
        select()
        New connection -> ERROR!
	[.....]

Comment out 'allegro_init' and the error message will disappear.

Unfortunately, I am not familiar with the inners of select() to
tells whats wrong with it.

Does the Unix porters, or any Network gurus has an idea ?
Thanks a bunch for your time, and generally speaking, for Allegro.

Omar Cornut

------------------------------------------------------------------

#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

#include "allegro.h"

#define	PORT		(4260)

int    	fd;
fd_set 	fdset_in;

int		main(int argc, char **argv)
{
  int                   dum;
  struct sockaddr_in    host;

  // Initialize Allegro
  allegro_init();

  // Create socket
  if ((fd = socket(PF_INET, SOCK_STREAM, 0)) < 0)
    { 
      perror("socket"); 
      exit (1);
    }

  // Setup
  dum = 1;
  setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &dum, sizeof (dum));
  host.sin_family = PF_INET;
  host.sin_port = htons(PORT);
  host.sin_addr.s_addr = htonl(INADDR_ANY);

  // Bind
  if (bind(fd, (struct sockaddr *)&host, sizeof (host)) < 0)
    { 
      perror("bind"); 
      exit (1);
    }
  
  // Open connections
  // Note: this line is not stricly needed to reproduce the bug
  listen(fd, 1);

  while (1)
    {
      printf("select()\n");
      FD_ZERO(&fdset_in);
      FD_SET(fd, &fdset_in);
      if (select(fd + 1, &fdset_in, NULL, NULL, NULL) == 0)
	{ 
	  perror("select"); 
	  exit (1);
	}
      if (FD_ISSET(fd, &fdset_in))
	{
	  printf("New connection -> ERROR!\n");
	}
    }

  return (0);
}
END_OF_MAIN();

------------------------------------------------------------------

-- 
Omar Cornut [Epitech 2]
"I hate quotes at the end of e-mail" -Me