aboutsummaryrefslogtreecommitdiff
path: root/netserver.c
blob: 196d29fb1a323db1781ca48e7f7536cdd219578a (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
/* --------------------------  netserver  ------------------------------------- */
/*                                                                              */
/* A server for bidirectional communication from within Pd.                     */
/* Allows to send back data to specific clients connected to the server.        */
/* Written by Olaf Matthes <olaf.matthes@gmx.de>                                */
/* Get source at http://www.akustische-kunst.org/puredata/maxlib                */
/*                                                                              */
/* 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.  */
/*                                                                              */
/* Based on PureData by Miller Puckette and others.                             */
/*                                                                              */
/* ---------------------------------------------------------------------------- */

#include "m_pd.h"
#include "s_stuff.h"
#include "m_imp.h"

#include <sys/types.h>
#include <stdarg.h>
#include <signal.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <pthread.h>
#ifdef WIN32
#include <io.h>
#include <fcntl.h>
#include <winsock.h>
#else
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/time.h>
#define SOCKET_ERROR -1
#endif

#define MAX_CONNECT  32		/* maximum number of connections */
#define INBUFSIZE    4096   /* size of receiving data buffer */

/* message levels from syslog.h */
#define LOG_EMERG       0       /* system is unusable */
#define LOG_ALERT       1       /* action must be taken immediately */
#define LOG_CRIT        2       /* critical conditions */
#define LOG_ERR         3       /* error conditions */
#define LOG_WARNING     4       /* warning conditions */
#define LOG_NOTICE      5       /* normal but significant condition */
#define LOG_INFO        6       /* informational */
#define LOG_DEBUG       7       /* debug-level messages */

static char *version = 
   "netserver v0.2.hcs1 :: bidirectional communication for Pd\n"
   "             written by Olaf Matthes <olaf.matthes@gmx.de>\n"
   "             syslogging by Hans-Christoph Steiner <hans@eds.org> ";

/* ----------------------------- netserver ------------------------- */

static t_class *netserver_class;
static t_binbuf *inbinbuf;

typedef void (*t_netserver_socketnotifier)(void *x);
typedef void (*t_netserver_socketreceivefn)(void *x, t_binbuf *b);

typedef struct _netserver
{
	  t_object x_obj;
	  t_outlet *x_msgout;
	  t_outlet *x_connectout;
	  t_outlet *x_clientno;
	  t_outlet *x_connectionip;
	  t_symbol *x_host[MAX_CONNECT];
	  t_int    x_fd[MAX_CONNECT];
	  t_int    x_sock_fd;
	  t_int    x_connectsocket;
	  t_int    x_nconnections;
/* for syslog style logging priorities  */
	  t_int    x_log_pri;
} t_netserver;

typedef struct _netserver_socketreceiver
{
	  char *sr_inbuf;
	  int sr_inhead;
	  int sr_intail;
	  void *sr_owner;
	  t_netserver_socketnotifier sr_notifier;
	  t_netserver_socketreceivefn sr_socketreceivefn;
} t_netserver_socketreceiver;

static t_netserver_socketreceiver *netserver_socketreceiver_new(void *owner, t_netserver_socketnotifier notifier,
																t_netserver_socketreceivefn socketreceivefn)
{
   t_netserver_socketreceiver *x = (t_netserver_socketreceiver *)getbytes(sizeof(*x));
   x->sr_inhead = x->sr_intail = 0;
   x->sr_owner = owner;
   x->sr_notifier = notifier;
   x->sr_socketreceivefn = socketreceivefn;
   if (!(x->sr_inbuf = malloc(INBUFSIZE))) bug("t_netserver_socketreceiver");
   return (x);
}

/* this is in a separately called subroutine so that the buffer isn't
   sitting on the stack while the messages are getting passed. */
static int netserver_socketreceiver_doread(t_netserver_socketreceiver *x)
{
   char messbuf[INBUFSIZE], *bp = messbuf;
   int indx;
   int inhead = x->sr_inhead;
   int intail = x->sr_intail;
   char *inbuf = x->sr_inbuf;
   if (intail == inhead) return (0);
   for (indx = intail; indx != inhead; indx = (indx+1)&(INBUFSIZE-1))
   {
	  char c = *bp++ = inbuf[indx];
	  if (c == ';' && (!indx || inbuf[indx-1] != '\\'))
	  {
		 intail = (indx+1)&(INBUFSIZE-1);
		 binbuf_text(inbinbuf, messbuf, bp - messbuf);
		 x->sr_inhead = inhead;
		 x->sr_intail = intail;
		 return (1);
	  }
   }
   return (0);
}

static void netserver_socketreceiver_read(t_netserver_socketreceiver *x, int fd)
{
   char *semi;
   int readto = (x->sr_inhead >= x->sr_intail ? INBUFSIZE : x->sr_intail-1);
   int ret;

   t_netserver *y = x->sr_owner;

   y->x_sock_fd = fd;

   /* the input buffer might be full.  If so, drop the whole thing */
   if (readto == x->sr_inhead)
   {
	  if (y->x_log_pri >= LOG_ERR)
		  post("netserver: dropped message");
	  x->sr_inhead = x->sr_intail = 0;
	  readto = INBUFSIZE;
   }
   else
   {
	  ret = recv(fd, x->sr_inbuf + x->sr_inhead,
				 readto - x->sr_inhead, 0);
	  if (ret < 0)
	  {
		 sys_sockerror("recv");
		 if (x->sr_notifier) (*x->sr_notifier)(x->sr_owner);
		 sys_rmpollfn(fd);
		 sys_closesocket(fd);
	  }
	  else if (ret == 0)
	  {
		 if (y->x_log_pri >= LOG_NOTICE) 
			post("netserver: << connection closed on socket %d", fd);
		 if (x->sr_notifier) (*x->sr_notifier)(x->sr_owner);
		 sys_rmpollfn(fd);
		 sys_closesocket(fd);
	  }
	  else
	  {
		 x->sr_inhead += ret;
		 if (x->sr_inhead >= INBUFSIZE) x->sr_inhead = 0;
		 while (netserver_socketreceiver_doread(x))
		 {
			outlet_setstacklim();
			if (x->sr_socketreceivefn)
			   (*x->sr_socketreceivefn)(x->sr_owner, inbinbuf);
			else binbuf_eval(inbinbuf, 0, 0, 0);
		 }
	  }
   }
}

static void netserver_socketreceiver_free(t_netserver_socketreceiver *x)
{
   free(x->sr_inbuf);
   freebytes(x, sizeof(*x));
}

/* ---------------- main netserver (send) stuff --------------------- */

/* send message to client using socket number */
static void netserver_send(t_netserver *x, t_symbol *s, int argc, t_atom *argv)
{
   int sockfd, client = -1, i;
   if(x->x_nconnections < 0)
   {
	  if (x->x_log_pri >= LOG_WARNING)
		  post("netserver: no clients connected");
	  return;
   }
   if(argc < 2)
   {
	  if (x->x_log_pri >= LOG_WARNING)
		 post("netserver: nothing to send");
	  return;
   }
   /* get socket number of connection (first element in list) */
   if(argv[0].a_type == A_FLOAT)
   {
	  sockfd = atom_getfloatarg(0, argc, argv);
	  for(i = 0; i < x->x_nconnections; i++)	/* check if connection exists */
	  {
		 if(x->x_fd[i] == sockfd)
		 {
			client = i;	/* the client we're sending to */
			break;
		 }
	  }
	  if(client == -1)
	  {
		 if (x->x_log_pri >= LOG_CRIT)
			post("netserver: no connection on socket %d", sockfd);
		 return;
	  }
   }
   else
   {
	  if (x->x_log_pri >= LOG_CRIT)
		 post("netserver: no socket specified");
	  return;
   }
   /* process & send data */
   if(sockfd > 0)
   {
	  t_binbuf *b = binbuf_new();
	  char *buf, *bp;
	  int length, sent;
	  t_atom at;
	  binbuf_add(b, argc - 1, argv + 1);	/* skip first element */
	  SETSEMI(&at);
	  binbuf_add(b, 1, &at);
	  binbuf_gettext(b, &buf, &length);

	  if (x->x_log_pri >= LOG_DEBUG)  
	  {
		 post("netserver: sending data to client %d on socket %d", client + 1, sockfd);
		 post("netserver: sending \"%s\"", buf);
	  }

	  for (bp = buf, sent = 0; sent < length;)
	  {
		 static double lastwarntime;
		 static double pleasewarn;
		 double timebefore = clock_getlogicaltime();
		 int res = send(sockfd, buf, length-sent, 0);
		 double timeafter = clock_getlogicaltime();
		 int late = (timeafter - timebefore > 0.005);
		 if (late || pleasewarn)
		 {
			if (timeafter > lastwarntime + 2)
			{
			   if (x->x_log_pri >= LOG_WARNING)
				  post("netserver blocked %d msec",
					   (int)(1000 * ((timeafter - timebefore) + pleasewarn)));
			   pleasewarn = 0;
			   lastwarntime = timeafter;
			}
			else if (late) pleasewarn += timeafter - timebefore;
		 }
		 if (res <= 0)
		 {
			sys_sockerror("netserver");
			if (x->x_log_pri >= LOG_ERR) 
			   post("netserver: could not send data to client");
			break;
		 }
		 else
		 {
			sent += res;
			bp += res;
		 }
	  }
	  t_freebytes(buf, length);
	  binbuf_free(b);
   }
   else if (x->x_log_pri >= LOG_CRIT)
	  post("netserver: not a valid socket number (%d)", sockfd);
}

/* send message to client using client number 
   note that the client numbers might change in case a client disconnects! */
static void netserver_client_send(t_netserver *x, t_symbol *s, int argc, t_atom *argv)
{
   int sockfd, client;
   if(x->x_nconnections < 0)
   {
	  if (x->x_log_pri >= LOG_WARNING)
		 post("netserver: no clients connected");
	  return;
   }
   if(argc < 2)
   {
	  if (x->x_log_pri >= LOG_WARNING)
		 post("netserver: nothing to send");
	  return;
   }
   /* get number of client (first element in list) */
   if(argv[0].a_type == A_FLOAT)
	  client = atom_getfloatarg(0, argc, argv);
   else
   {
	  if (x->x_log_pri >= LOG_WARNING)
		 post("netserver: no client specified");
	  return;
   }
   sockfd = x->x_fd[client - 1];	/* get socket number for that client */

   /* process & send data */
   if(sockfd > 0)
   {
	  t_binbuf *b = binbuf_new();
	  char *buf, *bp;
	  int length, sent;
	  t_atom at;
	  binbuf_add(b, argc - 1, argv + 1);	/* skip first element */
	  SETSEMI(&at);
	  binbuf_add(b, 1, &at);
	  binbuf_gettext(b, &buf, &length);

	  if (x->x_log_pri >= LOG_DEBUG)
	  {
		 post("netserver: sending data to client %d on socket %d", client, sockfd);
		 post("netserver: >> sending \"%s\"", buf);
	  }

	  for (bp = buf, sent = 0; sent < length;)
	  {
		 static double lastwarntime;
		 static double pleasewarn;
		 double timebefore = clock_getlogicaltime();
		 int res = send(sockfd, buf, length-sent, 0);
		 double timeafter = clock_getlogicaltime();
		 int late = (timeafter - timebefore > 0.005);
		 if (late || pleasewarn)
		 {
			if (timeafter > lastwarntime + 2)
			{
			   if (x->x_log_pri >= LOG_WARNING)
				  post("netserver blocked %d msec",
					   (int)(1000 * ((timeafter - timebefore) + pleasewarn)));
			   pleasewarn = 0;
			   lastwarntime = timeafter;
			}
			else if (late) pleasewarn += timeafter - timebefore;
		 }
		 if (res <= 0)
		 {
			sys_sockerror("netserver");
			if (x->x_log_pri >= LOG_ERR)
			   post("netserver: could not send data to cient");
			break;
		 }
		 else
		 {
			sent += res;
			bp += res;
		 }
	  }
	  t_freebytes(buf, length);
	  binbuf_free(b);
   }
   else if (x->x_log_pri >= LOG_CRIT)
	  post("netserver: not a valid socket number (%d)", sockfd);
}

/* broadcasts a message to all connected clients */
static void netserver_broadcast(t_netserver *x, t_symbol *s, int argc, t_atom *argv)
{
   int i, client = x->x_nconnections;	/* number of clients to send to */
   t_atom at[256];
   for(i = 0; i < argc; i++)
   {
	  at[i + 1] = argv[i];
   }
   argc++;
   /* enumerate through the clients and send each the message */
   while(client--)
   {
	  SETFLOAT(at, client + 1);	/* prepend number of client */
	  netserver_client_send(x, s, argc, at);
   }
}


/* ---------------- main netserver (receive) stuff --------------------- */

static void netserver_notify(t_netserver *x)
{
   int i, k;
   /* remove connection from list */
   for(i = 0; i < x->x_nconnections; i++)
   {
	  if(x->x_fd[i] == x->x_sock_fd)
	  {
		 x->x_nconnections--;
		 if (x->x_log_pri >= LOG_NOTICE)
			post("netserver: \"%s\" removed from list of clients", x->x_host[i]->s_name);
		 x->x_host[i] = NULL;	/* delete entry */
		 x->x_fd[i] = -1;
		 /* rearrange list now: move entries to close the gap */
		 for(k = i; k < x->x_nconnections; k++)
		 {
			x->x_host[k] = x->x_host[k + 1];
			x->x_fd[k] = x->x_fd[k + 1];
		 }
	  }
   }
   outlet_float(x->x_connectout, x->x_nconnections);
}

static void netserver_doit(void *z, t_binbuf *b)
{
   t_atom messbuf[1024];
   t_netserver *x = (t_netserver *)z;
   int msg, natom = binbuf_getnatom(b);
   t_atom *at = binbuf_getvec(b);
   int i;
   /* output clients IP and socket no. */
   for(i = 0; i < x->x_nconnections; i++)	/* search for corresponding IP */
   {
	  if(x->x_fd[i] == x->x_sock_fd)
	  {
		 outlet_symbol(x->x_connectionip, x->x_host[i]);
		 break;
	  }
   }
   outlet_float(x->x_clientno, x->x_sock_fd);	/* the socket number */
   /* process data */
   for (msg = 0; msg < natom;)
   {
	  int emsg;
	  for (emsg = msg; emsg < natom && at[emsg].a_type != A_COMMA
			  && at[emsg].a_type != A_SEMI; emsg++);

	  if (emsg > msg)
	  {
		 int ii;
		 for (ii = msg; ii < emsg; ii++)
			if (at[ii].a_type == A_DOLLAR || at[ii].a_type == A_DOLLSYM)
			{
			   pd_error(x, "netserver: got dollar sign in message");
			   goto nodice;
			}
		 if (at[msg].a_type == A_FLOAT)
		 {
			if (emsg > msg + 1)
			   outlet_list(x->x_msgout, 0, emsg-msg, at + msg);
			else outlet_float(x->x_msgout, at[msg].a_w.w_float);
		 }
		 else if (at[msg].a_type == A_SYMBOL)
			outlet_anything(x->x_msgout, at[msg].a_w.w_symbol,
							emsg-msg-1, at + msg + 1);
	  }
	 nodice:
	  msg = emsg + 1;
   }
}

static void netserver_connectpoll(t_netserver *x)
{
   struct sockaddr_in incomer_address;
   int sockaddrl = (int) sizeof( struct sockaddr );
   int fd = accept(x->x_connectsocket, (struct sockaddr*)&incomer_address, &sockaddrl);
   if (fd < 0) post("netserver: accept failed");
   else
   {
	  t_netserver_socketreceiver *y = netserver_socketreceiver_new((void *)x, 
																   (t_netserver_socketnotifier)netserver_notify,
																   (x->x_msgout ? netserver_doit : 0));
	  sys_addpollfn(fd, (t_fdpollfn)netserver_socketreceiver_read, y);
	  x->x_nconnections++;
	  x->x_host[x->x_nconnections - 1] = gensym(inet_ntoa(incomer_address.sin_addr));
	  x->x_fd[x->x_nconnections - 1] = fd;

	  if (x->x_log_pri >= LOG_NOTICE) 
		 post("netserver: ** accepted connection from %s on socket %d", 
			  x->x_host[x->x_nconnections - 1]->s_name, x->x_fd[x->x_nconnections - 1]);
	  outlet_float(x->x_connectout, x->x_nconnections);
   }
}

static void netserver_print(t_netserver *x)
{
   int i;
   if(x->x_nconnections > 0)
   {
	  post("netserver: %d open connections:", x->x_nconnections);

	  for(i = 0; i < x->x_nconnections; i++)
	  {
		 post("        \"%s\" on socket %d", 
			  x->x_host[i]->s_name, x->x_fd[i]);
	  }
   } else post("netserver: no open connections");
}

static void netserver_emerg(t_netserver *x)
{
   x->x_log_pri = LOG_EMERG;
}
static void netserver_alert(t_netserver *x)
{
   x->x_log_pri = LOG_ALERT;
}
static void netserver_crit(t_netserver *x)
{
   x->x_log_pri = LOG_CRIT;
}
static void netserver_err(t_netserver *x)
{
   x->x_log_pri = LOG_ERR;
}
static void netserver_warning(t_netserver *x)
{
   x->x_log_pri = LOG_WARNING;
}
static void netserver_notice(t_netserver *x)
{
   x->x_log_pri = LOG_NOTICE;
}
static void netserver_info(t_netserver *x)
{
   x->x_log_pri = LOG_INFO;
}
static void netserver_debug(t_netserver *x)
{
   x->x_log_pri = LOG_DEBUG;
}

static void *netserver_new(t_floatarg fportno)
{
   t_netserver *x;
   int i;
   struct sockaddr_in server;
   int sockfd, portno = fportno;

   x = (t_netserver *)pd_new(netserver_class);
/* set default debug message level */
   x->x_log_pri = LOG_ERR;
/* create a socket */
   sockfd = socket(AF_INET, SOCK_STREAM, 0);
   if (x->x_log_pri >= LOG_NOTICE)
	  post("netserver: receive socket %d", sockfd);
   if (sockfd < 0)
   {
	  sys_sockerror("socket");
	  return (0);
   }
   server.sin_family = AF_INET;
   server.sin_addr.s_addr = INADDR_ANY;

#ifdef IRIX
   /* this seems to work only in IRIX but is unnecessary in
	  Linux.  Not sure what NT needs in place of this. */
   if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, 0, 0) < 0)
	  post("setsockopt failed\n");
#endif

   /* 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("bind");
	  sys_closesocket(sockfd);
	  return (0);
   }
   x->x_msgout = outlet_new(&x->x_obj, &s_anything);

   /* streaming protocol */
   if (listen(sockfd, 5) < 0)
   {
	  sys_sockerror("listen");
	  sys_closesocket(sockfd);
	  sockfd = -1;
   }
   else
   {
	  sys_addpollfn(sockfd, (t_fdpollfn)netserver_connectpoll, x);
	  x->x_connectout = outlet_new(&x->x_obj, &s_float);
	  x->x_clientno = outlet_new(&x->x_obj, &s_float);
	  x->x_connectionip = outlet_new(&x->x_obj, &s_symbol);
	  inbinbuf = binbuf_new();
   }
   x->x_connectsocket = sockfd;
   x->x_nconnections = 0;
   for(i = 0; i < MAX_CONNECT; i++)x->x_fd[i] = -1;

   return (x);
}

static void netserver_free(t_netserver *x)
{
   int i;
   for(i = 0; i < x->x_nconnections; i++)
   {
	  sys_rmpollfn(x->x_fd[i]);
	  sys_closesocket(x->x_fd[i]);
   }
   if (x->x_connectsocket >= 0)
   {
	  sys_rmpollfn(x->x_connectsocket);
	  sys_closesocket(x->x_connectsocket);
   }
   binbuf_free(inbinbuf);
}

#ifndef MAXLIB
void netserver_setup(void)
{
   netserver_class = class_new(gensym("netserver"),(t_newmethod)netserver_new, (t_method)netserver_free,
							   sizeof(t_netserver), 0, A_DEFFLOAT, 0);
   class_addmethod(netserver_class, (t_method)netserver_print, gensym("print"), 0);
   class_addmethod(netserver_class, (t_method)netserver_send, gensym("send"), A_GIMME, 0);
   class_addmethod(netserver_class, (t_method)netserver_client_send, gensym("client"), A_GIMME, 0);
   class_addmethod(netserver_class, (t_method)netserver_broadcast, gensym("broadcast"), A_GIMME, 0);
/* syslog log level messages */
   class_addmethod(netserver_class, (t_method)netserver_emerg, gensym("emerg"), 0);
   class_addmethod(netserver_class, (t_method)netserver_emerg, gensym("emergency"), 0);
   class_addmethod(netserver_class, (t_method)netserver_alert, gensym("alert"), 0);
   class_addmethod(netserver_class, (t_method)netserver_crit, gensym("crit"), 0);
   class_addmethod(netserver_class, (t_method)netserver_crit, gensym("critical"), 0);
   class_addmethod(netserver_class, (t_method)netserver_err, gensym("err"), 0);
   class_addmethod(netserver_class, (t_method)netserver_err, gensym("error"), 0);
   class_addmethod(netserver_class, (t_method)netserver_err, gensym("quiet"), 0);
   class_addmethod(netserver_class, (t_method)netserver_warning, gensym("warning"), 0);
   class_addmethod(netserver_class, (t_method)netserver_notice, gensym("notice"), 0);
   class_addmethod(netserver_class, (t_method)netserver_info, gensym("info"), 0);
   class_addmethod(netserver_class, (t_method)netserver_info, gensym("verbose"), 0);
   class_addmethod(netserver_class, (t_method)netserver_debug, gensym("debug"), 0);
   
   
   post(version);
}
#else
void maxlib_netserver_setup(void)
{
   netserver_class = class_new(gensym("maxlib_netserver"),(t_newmethod)netserver_new, (t_method)netserver_free,
							   sizeof(t_netserver), 0, A_DEFFLOAT, 0);
   class_addcreator((t_newmethod)netserver_new, gensym("netserver"), A_DEFFLOAT, 0);
   class_addmethod(netserver_class, (t_method)netserver_print, gensym("print"), 0);
   class_addmethod(netserver_class, (t_method)netserver_send, gensym("send"), A_GIMME, 0);
   class_addmethod(netserver_class, (t_method)netserver_client_send, gensym("client"), A_GIMME, 0);
   class_addmethod(netserver_class, (t_method)netserver_broadcast, gensym("broadcast"), A_GIMME, 0);
   class_sethelpsymbol(netserver_class, gensym("maxlib/netserver-help.pd"));
}
#endif