aboutsummaryrefslogtreecommitdiff
path: root/udpserver.c
blob: ab21c7fc3070287396271f4da02941935f3fa305 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
/* udpserver.c
 *
 * listens on a UDP-socket for bi-directional communication
 *
 * copyright (c) 2010 IOhannes m zmölnig, IEM
 * copyright (c) 2006-2010 Martin Peach
 * copyright (c) 2004 Olaf Matthes
 */

/*                                                                              */
/* A server for bidirectional communication from within Pd.                     */
/* Allows to send back data to specific clients connected to the server.        */
/*                                                                              */
/* 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.,                                                            */
/* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.                  */
/*                                                                              */

/* ---------------------------------------------------------------------------- */
#define DEBUGLEVEL 1
#include "iemnet.h"
#include <stdio.h>
#include <stdlib.h>

#define MAX_CONNECT 32 /* maximum number of connections */

/* ----------------------------- udpserver ------------------------- */

static t_class *udpserver_class;
static const char objName[] = "udpserver";

typedef struct _udpserver_sender
{
  struct _udpserver *sr_owner;

  long           sr_host;
  unsigned short sr_port;
  t_int          sr_fd;
  t_iemnet_sender*sr_sender;
} t_udpserver_sender;

typedef struct _udpserver
{
  t_object                    x_obj;
  t_outlet                   *x_msgout;
  t_outlet                   *x_connectout;
  t_outlet                   *x_sockout; // legacy
  t_outlet                   *x_addrout; // legacy
  t_outlet                   *x_statout; 

  t_udpserver_sender         *x_sr[MAX_CONNECT]; /* socket per connection */
  t_int                       x_nconnections;

  t_int                       x_connectsocket;    /* socket waiting for new connections */
  t_int                       x_port;
  unsigned char               x_accept; /* whether we accept new connections or not */

  int                         x_defaulttarget; /* the default connection to send to; 0=broadcast; >0 use this client; <0 exclude this client */

  t_iemnet_receiver          *x_receiver;
  t_iemnet_floatlist         *x_floatlist;
} t_udpserver;

static t_udpserver_sender *udpserver_sender_new(t_udpserver *owner,  unsigned long host, unsigned short port)
{
  t_udpserver_sender *x = (t_udpserver_sender *)malloc(sizeof(t_udpserver_sender));
  if(NULL==x) {
    error("%s_sender: unable to allocate %d bytes", objName, sizeof(*x));
    return NULL;
  } else {
    int sockfd = owner->x_connectsocket;
    x->sr_owner=owner;

    x->sr_fd=sockfd;

    x->sr_host=host; //ntohl(addr->sin_addr.s_addr);
    x->sr_port=port; //ntohs(addr->sin_port);

    x->sr_sender=iemnet__sender_create(sockfd);
  }
  return (x);
}

static void udpserver_sender_free(t_udpserver_sender *x)
{
  DEBUG("freeing %x", x);
  if (x != NULL)
    {
      int sockfd=x->sr_fd;
      t_iemnet_sender*sender=x->sr_sender;

      x->sr_owner=NULL;
      x->sr_sender=NULL;

      x->sr_fd=-1;

      free(x);

      if(sender)  iemnet__sender_destroy(sender);

      sys_closesocket(sockfd);
    }
  DEBUG("freeed %x", x);
}

static t_udpserver_sender* udpserver_sender_copy(t_udpserver_sender*x) {
  return udpserver_sender_new(x->sr_owner,x->sr_host, x->sr_port);
}

static int udpserver_socket2index(t_udpserver*x, int sockfd)
{
  int i=0;
  for(i = 0; i < x->x_nconnections; i++) /* check if connection exists */
    {
      if(x->x_sr[i]->sr_fd == sockfd)
        {
          return i;
        }
    }  
  return -1;
}

/* checks whether client is a valid (1-based) index
 *  if the id is invalid, returns -1
 *  if the id is valid, return the 0-based index (client-1)
 */
static int udpserver_fixindex(t_udpserver*x, int client)
{
  if(x->x_nconnections <= 0)
    {
      pd_error(x, "[%s]: no clients connected", objName);
      return -1;
    }
  
  if (!((client > 0) && (client <= x->x_nconnections)))
    {
      pd_error(x, "[%s] client %d out of range [1..%d]", objName, client, x->x_nconnections);
      return -1;
    }
  return (client-1);
}


/* returns 1 if addr1==addr2, 0 otherwise */
static int equal_addr(unsigned long host1, unsigned short port1,  unsigned long host2, unsigned short port2) {
  return (
          ((port1 == port2) && 
           (host1 == host2))
          );
}


static int udpserver__find_sender(t_udpserver*x,  unsigned long host, unsigned short port) {
  int i=0;
  for(i=0; i<x->x_nconnections; i++) {
    if(NULL==x->x_sr[i])return -1;
    if(equal_addr(host, port, x->x_sr[i]->sr_host, x->x_sr[i]->sr_port))return i;
  }
  return -1;
}

/**
 * check whether the sender is already registered
 * if not, add it to the list of registered senders
 */
static t_udpserver_sender* udpserver_sender_add(t_udpserver*x, 
						unsigned long host, unsigned short port )
{
  int id=-1;

  if(!x->x_accept)return NULL;

  id=udpserver__find_sender(x, host, port);
  DEBUG("%X:%d -> %d", host, port, id);
  if(id<0) {
#if 1
    /* since udp is a connection-less protocol we have no way of knowing the currently connected clients
     * the following 3 lines assume, that there is only one client connected (the last we got data from 
     */
    id=0;
    udpserver_sender_free(x->x_sr[id]);
    x->x_sr[id]=udpserver_sender_new(x, host, port);
    x->x_nconnections=1;
#else
    /* this is a more optimistic approach as above:
     * every client that we received data from is added to the list of receivers
     * the idea is to remove the sender, if it's known to not receive any data
     */
    id=x->x_nconnections;
    /* an unknown address! add it */
    if(id<MAX_CONNECT) {
      x->x_sr[id]=udpserver_sender_new(x, host, port);
      DEBUG("new sender[%d]= %x", id, x->x_sr[id]);
      x->x_nconnections++;
    } else {
      // oops, no more senders!
      id=-1;
    }
#endif
  }
  DEBUG("sender_add: %d", id);
  if(id>=0) {
    return x->x_sr[id];
  }

  return NULL;
}

static void udpserver_sender_remove(t_udpserver*x, int id) {
  if(id>=0 && id<x->x_nconnections && x->x_sr[id]) {
    int i;

    t_udpserver_sender* sdr=x->x_sr[id];
    udpserver_sender_free(sdr);

    // close the gap by shifting the remaining connections to the left
    for(i=id; i<x->x_nconnections; i++) {
      x->x_sr[id]=x->x_sr[id+1];
    }
    x->x_sr[id]=NULL;

    x->x_nconnections--;
  }
}




/* ---------------- udpserver info ---------------------------- */
static void udpserver_info_client(t_udpserver *x, int client)
{
  // "client <id> <socket> <IP> <port>"
  // "bufsize <id> <insize> <outsize>"
  static t_atom output_atom[4];
  if(x&&x->x_sr&&x->x_sr[client]) {
    int sockfd = x->x_sr[client]->sr_fd;
    unsigned short port   = x->x_sr[client]->sr_port;
    long address = x->x_sr[client]->sr_host;
    char hostname[MAXPDSTRING];

    int insize =iemnet__receiver_getsize(x->x_receiver);
    int outsize=iemnet__sender_getsize  (x->x_sr[client]->sr_sender  );

    snprintf(hostname, MAXPDSTRING-1, "%d.%d.%d.%d", 
             (unsigned char)((address & 0xFF000000)>>24),
             (unsigned char)((address & 0x0FF0000)>>16),
             (unsigned char)((address & 0x0FF00)>>8),
	     (unsigned char)((address & 0x0FF))
	     );
    hostname[MAXPDSTRING-1]=0;

    SETFLOAT (output_atom+0, client+1);
    SETFLOAT (output_atom+1, sockfd);
    SETSYMBOL(output_atom+2, gensym(hostname));
    SETFLOAT (output_atom+3, port);

    outlet_anything( x->x_statout, gensym("client"), 4, output_atom);

    SETFLOAT (output_atom+0, client+1);
    SETFLOAT (output_atom+1, insize);
    SETFLOAT (output_atom+2, outsize);
    outlet_anything( x->x_statout, gensym("bufsize"), 3, output_atom);
  }
}


static void udpserver_info(t_udpserver *x) {
  static t_atom output_atom[4];
  int sockfd=x->x_connectsocket;


  int port=x->x_port;

  if(sockfd<0) {
    // no open port
    error("[%s] no valid sock", objName);
  }


  if(x->x_port<=0) {
    struct sockaddr_in  server;
    socklen_t           serversize=sizeof(server);
    if(!getsockname(sockfd, (struct sockaddr *)&server, &serversize)) {
      x->x_port=ntohs(server.sin_port);
      port=x->x_port;
    } else {
      error("[%s] gesockname failed for %d", objName, sockfd);
    }
  }

  SETFLOAT (output_atom+0, port);
  outlet_anything( x->x_statout, gensym("port"), 1, output_atom);
}


static void udpserver_info_connection(t_udpserver *x, t_udpserver_sender*y)
{
  iemnet__addrout(x->x_statout, x->x_addrout, y->sr_host, y->sr_port);
  //  outlet_float(x->x_sockout, y->sr_fd);
}

/* ---------------- main udpserver (send) stuff --------------------- */
static void udpserver_disconnect_socket(t_udpserver *x, t_floatarg fsocket);
static void udpserver_send_bytes(t_udpserver*x, int client, t_iemnet_chunk*chunk)
{
  DEBUG("send_bytes to %x -> %x[%d]", x, x->x_sr, client);
  if(x->x_sr)DEBUG("client %X", x->x_sr[client]);
  if(x && x->x_sr && x->x_sr[client]) {
    t_atom                  output_atom[3];
    int size=0;

    t_iemnet_sender*sender=sender=x->x_sr[client]->sr_sender;
    int sockfd = x->x_sr[client]->sr_fd;

    chunk->addr=x->x_sr[client]->sr_host;
    chunk->port=x->x_sr[client]->sr_port;

    if(sender) {
      size=iemnet__sender_send(sender, chunk);
    }

    SETFLOAT(&output_atom[0], client+1);
    SETFLOAT(&output_atom[1], size);
    SETFLOAT(&output_atom[2], sockfd);
    outlet_anything( x->x_statout, gensym("sent"), 3, output_atom);

    if(size<0) {
      // disconnected!
      udpserver_disconnect_socket(x, sockfd);
    }
  }
}



/* broadcasts a message to all connected clients but the given one */
static void udpserver_send_butclient(t_udpserver *x, int but, int argc, t_atom *argv)
{
  int client=0;
  t_iemnet_chunk*chunk=iemnet__chunk_create_list(argc, argv);

  /* enumerate through the clients and send each the message */
  for(client = 0; client < x->x_nconnections; client++)	/* check if connection exists */
    {
      /* socket exists for this client */
      if(client!=but)udpserver_send_bytes(x, client, chunk);
    }
  iemnet__chunk_destroy(chunk);
}
/* sends a message to a given client */
static void udpserver_send_toclient(t_udpserver *x, int client, int argc, t_atom *argv)
{
  t_iemnet_chunk*chunk=iemnet__chunk_create_list(argc, argv);
  udpserver_send_bytes(x, client, chunk);
  iemnet__chunk_destroy(chunk);
}



/* send message to client using client number
   note that the client numbers might change in case a client disconnects! */
/* clients start at 1 but our index starts at 0 */
static void udpserver_send_client(t_udpserver *x, t_symbol *s, int argc, t_atom *argv)
{
  int client=0;
      
  if (argc > 0)
    {
      client=udpserver_fixindex(x, atom_getint(argv));
      if(client<0)return;
      if(argc==1) {
        udpserver_info_client(x, client);
      } else {
        udpserver_send_toclient(x, client, argc-1, argv+1);
      }
      return;
    }
  else 
    {
      for(client=0; client<x->x_nconnections; client++)
        udpserver_info_client(x, client);
    }
}

/* broadcasts a message to all connected clients */
static void udpserver_broadcast(t_udpserver *x, t_symbol *s, int argc, t_atom *argv)
{
  int     client;
  t_iemnet_chunk*chunk=iemnet__chunk_create_list(argc, argv);

  DEBUG("broadcasting to %d clients", x->x_nconnections);

  /* enumerate through the clients and send each the message */
  for(client = 0; client < x->x_nconnections; client++)	/* check if connection exists */
    {
      /* socket exists for this client */
      udpserver_send_bytes(x, client, chunk);
    }
  iemnet__chunk_destroy(chunk);
}

/* broadcasts a message to all connected clients */
static void udpserver_broadcastbut(t_udpserver *x, t_symbol *s, int argc, t_atom *argv)
{
  int but=-1;

  if(argc<2) {
    return;
  }
  if((but=udpserver_fixindex(x, atom_getint(argv)))<0)return;
  udpserver_send_butclient(x, but, argc-1, argv+1);
}

static void udpserver_defaultsend(t_udpserver *x, t_symbol *s, int argc, t_atom *argv)
{
  int client=-1;
  int sockfd=x->x_defaulttarget;
  DEBUG("sending to sockfd: %d", sockfd);
  if(0==sockfd) 
    udpserver_broadcast(x, s, argc, argv);
  else if(sockfd>0) {
    client=udpserver_socket2index(x, sockfd);
    udpserver_send_toclient(x, client, argc, argv);
  } else if(sockfd<0) {
    client=udpserver_socket2index(x, -sockfd);
    udpserver_send_butclient(x, client, argc, argv);     
  }
}
static void udpserver_defaulttarget(t_udpserver *x, t_floatarg f)
{
  int sockfd=0;
  int rawclient=f;
  int client=(rawclient<0)?(-rawclient):rawclient;

  if(client > x->x_nconnections) {
    error("[%s] target %d out of range [0..%d]", objName, client,  x->x_nconnections);
    return;
  }

  // map the client to a persistant socket
  if(client>0) {
    sockfd=x->x_sr[client-1]->sr_fd;
  }

  if(rawclient<0)sockfd=-sockfd;  

  x->x_defaulttarget=sockfd;
}
static void udpserver_targetsocket(t_udpserver *x, t_floatarg f)
{
  int sockfd=f;
  x->x_defaulttarget=sockfd;
}



/* send message to client using socket number */
static void udpserver_send_socket(t_udpserver *x, t_symbol *s, int argc, t_atom *argv)
{
  int     client = -1;
  t_iemnet_chunk*chunk=NULL;
  if(argc) {
    client = udpserver_socket2index(x, atom_getint(argv));
    if(client<0)return;
  } else {
    pd_error(x, "%s_send: no socket specified", objName);
    return;
  }

  /* get socket number of connection (first element in list) */
  if(argc && argv->a_type == A_FLOAT)
    {
      int sockfd=atom_getint(argv);
      client = udpserver_socket2index(x, sockfd);
      if(client < 0)
        {
          error("[%s]: no connection on socket %d", objName, sockfd);
          return;
        }
    }
  else
    {
      error("[%s]: no socket specified", objName);
      return;
    }
  
  chunk=iemnet__chunk_create_list(argc-1, argv+1);
  udpserver_send_bytes(x, client, chunk);
  iemnet__chunk_destroy(chunk);
}

static void udpserver_disconnect(t_udpserver *x, int client)
{
  t_udpserver_sender*sdr;
  int conns;
  DEBUG("disconnect %x %d", x, client);

  if(client<0 || client >= x->x_nconnections)return;

  sdr=udpserver_sender_copy(x->x_sr[client]);

  udpserver_sender_remove(x, client);
  conns=x->x_nconnections;


  udpserver_info_connection(x, sdr);
  outlet_float(x->x_connectout, conns);
}


/* disconnect a client by number */
static void udpserver_disconnect_client(t_udpserver *x, t_floatarg fclient)
{
  int client = udpserver_fixindex(x, fclient);

  if(client<0)return;
  udpserver_disconnect(x, client);
}


/* disconnect a client by socket */
static void udpserver_disconnect_socket(t_udpserver *x, t_floatarg fsocket)
{
  int id=udpserver_socket2index(x, (int)fsocket);
  if(id>=0)
    udpserver_disconnect_client(x, id+1);
}



/* disconnect a client by socket */
static void udpserver_disconnect_all(t_udpserver *x)
{
  int id=x->x_nconnections;
  while(--id>=0) {
    udpserver_disconnect(x, id);
  }
}

/* whether we should accept new connections */
static void udpserver_accept(t_udpserver *x, t_float f) {
  x->x_accept=(unsigned char)f;
}


/* ---------------- main udpserver (receive) stuff --------------------- */
static void udpserver_receive_callback(void *y, t_iemnet_chunk*c) {
  t_udpserver*x=(t_udpserver*)y;
  if(NULL==y)return;

  if(c) {
    int conns = x->x_nconnections;
    DEBUG("add new sender from %d", c->port);
    t_udpserver_sender*sdr=udpserver_sender_add(x, c->addr, c->port);
    DEBUG("added new sender from %d", c->port);
    if(sdr) {
      udpserver_info_connection(x, sdr);
      x->x_floatlist=iemnet__chunk2list(c, x->x_floatlist); // gets destroyed in the dtor

      /* here we might have a reentrancy problem */
      if(conns!=x->x_nconnections) {
        outlet_float(x->x_connectout, x->x_nconnections);
      }
      outlet_list(x->x_msgout, gensym("list"), x->x_floatlist->argc, x->x_floatlist->argv);
    }
  } else {
    // disconnection never happens with a connectionless protocol like UDP
    pd_error(x, "[%s] received disconnection event", objName);
  }
}


// this get's never called
static void udpserver_connectpoll(t_udpserver *x)
{
  struct sockaddr_in  incomer_address;
  unsigned int        sockaddrl = sizeof( struct sockaddr );
  int                 fd = -1;
  int                 i;

  // TODO: provide a way to not accept connection
  // idea: add a message "accept $1" to turn off/on acceptance of new connections
  fd = accept(x->x_connectsocket, (struct sockaddr*)&incomer_address, &sockaddrl);

  bug("connectpoll");

  if (fd < 0) error("[%s] accept failed", objName);
  else
    {
      unsigned long host  = ntohl(incomer_address.sin_addr.s_addr);
      unsigned short port = ntohs(incomer_address.sin_port);

      t_udpserver_sender *y = udpserver_sender_new(x, host, port);
      if (!y)
        {
          sys_closesocket(fd);
          return;
        }
      x->x_nconnections++;
      i = x->x_nconnections - 1;
      x->x_sr[i] = y;

      udpserver_info_connection(x, y);
    }

  outlet_float(x->x_connectout, x->x_nconnections);
}

static void udpserver_port(t_udpserver*x, t_floatarg fportno)
{
  static t_atom ap[1];
  int                 portno = fportno;
  struct sockaddr_in  server;
  socklen_t           serversize=sizeof(server);
  int sockfd = x->x_connectsocket;
  SETFLOAT(ap, -1);
  if(x->x_port == portno) {
    return;
  }

  /* cleanup any open ports */
  if(sockfd>=0) {
    //sys_rmpollfn(sockfd);
    sys_closesocket(sockfd);
    x->x_connectsocket=-1;
    x->x_port=-1;
  }


  sockfd = socket(AF_INET, SOCK_DGRAM, 0);


  server.sin_family = AF_INET;

  /* LATER allow setting of inaddr */
  server.sin_addr.s_addr = INADDR_ANY;

  /* assign server port number */
  server.sin_port = htons((u_short)portno);
  /* name the socket */
  if (bind(sockfd, (struct sockaddr *)&server, serversize) < 0)
    {
      sys_sockerror("udpserver: bind");
      sys_closesocket(sockfd);
      outlet_anything(x->x_statout, gensym("port"), 1, ap);
      return;
    }

  x->x_receiver=iemnet__receiver_create(sockfd,
					x, 
					udpserver_receive_callback);

  x->x_connectsocket = sockfd;
  x->x_port = portno;


  // find out which port is actually used (useful when assigning "0")
  if(!getsockname(sockfd, (struct sockaddr *)&server, &serversize)) {
    x->x_port=ntohs(server.sin_port);
  }


  SETFLOAT(ap, x->x_port);
  outlet_anything(x->x_statout, gensym("port"), 1, ap);
}

static void *udpserver_new(t_floatarg fportno)
{
  t_udpserver         *x;
  int                 i;

  x = (t_udpserver *)pd_new(udpserver_class);

  x->x_msgout = outlet_new(&x->x_obj, 0); /* 1st outlet for received data */
  x->x_connectout = outlet_new(&x->x_obj, gensym("float")); /* 2nd outlet for number of connected clients */
  x->x_sockout = outlet_new(&x->x_obj, gensym("float"));
  x->x_addrout = outlet_new(&x->x_obj, gensym("list" ));
  x->x_statout = outlet_new(&x->x_obj, 0);/* 5th outlet for everything else */

  x->x_connectsocket = -1;
  x->x_port = -1;
  x->x_nconnections = 0;

  for(i = 0; i < MAX_CONNECT; i++)
    {
      x->x_sr[i] = NULL;
    }

  x->x_defaulttarget=0;
  x->x_floatlist=iemnet__floatlist_create(1024);

  udpserver_port(x, fportno);

  x->x_accept=1;

  return (x);
}

static void udpserver_free(t_udpserver *x)
{
  int     i;

  for(i = 0; i < MAX_CONNECT; i++)
    {
      if (NULL!=x->x_sr[i]) {
        DEBUG("[%s] free %x", objName, x);
        udpserver_sender_free(x->x_sr[i]);
        x->x_sr[i]=NULL;
      }
    }
  if (x->x_connectsocket >= 0)
    {
      //sys_rmpollfn(x->x_connectsocket);
      sys_closesocket(x->x_connectsocket);
    }
	if(x->x_floatlist)iemnet__floatlist_destroy(x->x_floatlist);x->x_floatlist=NULL;
}

IEMNET_EXTERN void udpserver_setup(void)
{
  if(!iemnet__register(objName))return;
  error("[%s] does not work yet", objName);

  udpserver_class = class_new(gensym(objName),(t_newmethod)udpserver_new, (t_method)udpserver_free,
                              sizeof(t_udpserver), 0, A_DEFFLOAT, 0);
  class_addmethod(udpserver_class, (t_method)udpserver_disconnect_client, gensym("disconnectclient"), A_DEFFLOAT, 0);
  class_addmethod(udpserver_class, (t_method)udpserver_disconnect_socket, gensym("disconnectsocket"), A_DEFFLOAT, 0);
  class_addmethod(udpserver_class, (t_method)udpserver_disconnect_all, gensym("disconnect"), 0);

  class_addmethod(udpserver_class, (t_method)udpserver_accept, gensym("accept"), A_FLOAT, 0);

  class_addmethod(udpserver_class, (t_method)udpserver_send_socket, gensym("send"), A_GIMME, 0);
  class_addmethod(udpserver_class, (t_method)udpserver_send_client, gensym("client"), A_GIMME, 0);

  class_addmethod(udpserver_class, (t_method)udpserver_broadcast, gensym("broadcast"), A_GIMME, 0);

  class_addmethod(udpserver_class, (t_method)udpserver_defaulttarget, gensym("target"), A_DEFFLOAT, 0);
  class_addmethod(udpserver_class, (t_method)udpserver_targetsocket, gensym("targetsocket"), A_DEFFLOAT, 0);
  class_addlist  (udpserver_class, (t_method)udpserver_defaultsend);

  class_addmethod(udpserver_class, (t_method)udpserver_port, gensym("port"), A_DEFFLOAT, 0);
  class_addbang  (udpserver_class, (t_method)udpserver_info);

  DEBUGMETHOD(udpserver_class);
}

IEMNET_INITIALIZER(udpserver_setup);


/* end of udpserver.c */