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/* tcpsend.c
* copyright (c) 2010 IOhannes m zmölnig, IEM
* copyright (c) 2006-2010 Martin Peach
* copyright (c) Miller Puckette
*/
/* */
/* A client 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. */
/* */
static const char objName[] = "tcpsend";
#include "iemnet.h"
#include <string.h>
#ifndef _WIN32
# include <netinet/tcp.h>
#endif
static t_class *tcpsend_class;
typedef struct _tcpsend
{
t_object x_obj;
int x_fd;
t_iemnet_sender*x_sender;
} t_tcpsend;
static void tcpsend_disconnect(t_tcpsend *x)
{
if (x->x_fd >= 0)
{
if(x->x_sender)iemnet__sender_destroy(x->x_sender); x->x_sender=NULL;
sys_closesocket(x->x_fd);
x->x_fd = -1;
outlet_float(x->x_obj.ob_outlet, 0);
post("tcpsend: disconnected");
}
}
static void tcpsend_connect(t_tcpsend *x, t_symbol *hostname,
t_floatarg fportno)
{
struct sockaddr_in server;
struct hostent *hp;
int sockfd;
int portno = fportno;
int intarg;
if (x->x_fd >= 0)
{
error("tcpsend: already connected");
return;
}
/* create a socket */
sockfd = socket(AF_INET, SOCK_STREAM, 0);
DEBUG("send socket %d\n", sockfd);
if (sockfd < 0)
{
sys_sockerror("tcpsend: socket");
return;
}
/* connect socket using hostname provided in command line */
server.sin_family = AF_INET;
hp = gethostbyname(hostname->s_name);
if (hp == 0)
{
post("tcpsend: bad host?\n");
return;
}
/* for stream (TCP) sockets, specify "nodelay" */
intarg = 1;
if (setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY,
(char *)&intarg, sizeof(intarg)) < 0)
post("tcpsend: setsockopt (TCP_NODELAY) failed\n");
memcpy((char *)&server.sin_addr, (char *)hp->h_addr, hp->h_length);
/* assign client port number */
server.sin_port = htons((u_short)portno);
post("tcpsend: connecting to port %d", portno);
/* try to connect. */
if (connect(sockfd, (struct sockaddr *) &server, sizeof (server)) < 0)
{
sys_sockerror("tcpsend: connecting stream socket");
sys_closesocket(sockfd);
return;
}
x->x_fd = sockfd;
x->x_sender=iemnet__sender_create(sockfd);
outlet_float(x->x_obj.ob_outlet, 1);
}
static void tcpsend_send(t_tcpsend *x, t_symbol *s, int argc, t_atom *argv)
{
int size=0;
t_iemnet_sender*sender=x->x_sender;
t_iemnet_chunk*chunk=iemnet__chunk_create_list(argc, argv);
if(sender && chunk) {
size=iemnet__sender_send(sender, chunk);
}
iemnet__chunk_destroy(chunk);
}
static void tcpsend_free(t_tcpsend *x)
{
tcpsend_disconnect(x);
}
static void *tcpsend_new(void)
{
t_tcpsend *x = (t_tcpsend *)pd_new(tcpsend_class);
outlet_new(&x->x_obj, gensym("float"));
x->x_fd = -1;
return (x);
}
IEMNET_EXTERN void tcpsend_setup(void)
{
if(!iemnet__register(objName))return;
tcpsend_class = class_new(gensym(objName),
(t_newmethod)tcpsend_new, (t_method)tcpsend_free,
sizeof(t_tcpsend),
0, 0);
class_addmethod(tcpsend_class, (t_method)tcpsend_connect,
gensym("connect"), A_SYMBOL, A_FLOAT, 0);
class_addmethod(tcpsend_class, (t_method)tcpsend_disconnect,
gensym("disconnect"), 0);
class_addmethod(tcpsend_class, (t_method)tcpsend_send, gensym("send"),
A_GIMME, 0);
class_addlist(tcpsend_class, (t_method)tcpsend_send);
}
IEMNET_INITIALIZER(tcpsend_setup);
/* end tcpsend.c */
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