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/* udpreceive.c
* copyright (c) 2010 IOhannes m zmölnig, IEM
* copyright (c) 2006-2010 Martin Peach
* copyright (c) Miller Puckette
*/
/* */
/* A server for unidirectional communication from within Pd. */
/* */
/* This program is free software; you can redistribute it and/or */
/* modify it under the terms of the GNU General Public License */
/* as published by the Free Software Foundation; either version 2 */
/* of the License, or (at your option) any later version. */
/* */
/* This program is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
/* GNU General Public License for more details. */
/* */
/* You should have received a copy of the GNU General Public License */
/* along with this program; if not, write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* */
#include "iemnet.h"
#ifndef _WIN32
# include <netinet/tcp.h>
#endif
/* ----------------------------- udpreceive ------------------------- */
static t_class *udpreceive_class;
typedef struct _udpreceive
{
t_object x_obj;
t_outlet *x_msgout;
t_outlet *x_addrout;
int x_connectsocket;
t_iemnet_receiver*x_receiver;
} t_udpreceive;
static void udpreceive_read_callback(void*y,
t_iemnet_chunk*c,
int argc, t_atom*argv) {
t_udpreceive*x=(t_udpreceive*)y;
if(argc) {
iemnet__addrout(NULL, x->x_addrout, c->addr, c->port);
outlet_list(x->x_msgout, gensym("list"), argc, argv);
} else {
post("nothing received");
}
}
static void *udpreceive_new(t_floatarg fportno)
{
t_udpreceive *x;
struct sockaddr_in server;
int sockfd, portno = fportno;
int intarg;
/* create a socket */
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
DEBUG("udpreceive_new: socket %d port %d", sockfd, portno);
if (sockfd < 0)
{
sys_sockerror("udpreceive: socket");
return (0);
}
server.sin_family = AF_INET;
server.sin_addr.s_addr = INADDR_ANY;
/* enable delivery of all multicast or broadcast (but not unicast)
* UDP datagrams to all sockets bound to the same port */
intarg = 1;
if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR,
(char *)&intarg, sizeof(intarg)) < 0)
post("udpreceive: setsockopt (SO_REUSEADDR) failed");
/* assign server port number */
server.sin_port = htons((u_short)portno);
/* name the socket */
if (bind(sockfd, (struct sockaddr *)&server, sizeof(server)) < 0)
{
sys_sockerror("udpreceive: bind");
sys_closesocket(sockfd);
return (0);
}
x = (t_udpreceive *)pd_new(udpreceive_class);
x->x_msgout = outlet_new(&x->x_obj, &s_anything);
x->x_addrout = outlet_new(&x->x_obj, &s_list);
x->x_connectsocket = sockfd;
// sys_addpollfn(x->x_connectsocket, (t_fdpollfn)udpreceive_read, x);
x->x_receiver=iemnet__receiver_create(sockfd,
x,
udpreceive_read_callback);
return (x);
}
static void udpreceive_free(t_udpreceive *x)
{
iemnet__receiver_destroy(x->x_receiver);
x->x_connectsocket=0;
}
void udpreceive_setup(void)
{
udpreceive_class = class_new(gensym("udpreceive"),
(t_newmethod)udpreceive_new, (t_method)udpreceive_free,
sizeof(t_udpreceive), CLASS_NOINLET, A_DEFFLOAT, 0);
}
/* end udpreceive.c */
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