-
Notifications
You must be signed in to change notification settings - Fork 464
/
server.cpp
1310 lines (1149 loc) · 36.8 KB
/
server.cpp
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
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*****************************************************************************\
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
This file is licensed under the Snes9x License.
For further information, consult the LICENSE file in the root directory.
\*****************************************************************************/
#ifdef NETPLAY_SUPPORT
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <memory.h>
#include <sys/types.h>
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#include "snes9x.h"
#ifdef __WIN32__
#include <winsock.h>
#include <process.h>
#include "win32/wsnes9x.h"
#define ioctl ioctlsocket
#define close closesocket
#define read(a,b,c) recv(a, b, c, 0)
#define write(a,b,c) send(a, b, c, 0)
#define gettimeofday(a,b) S9xGetTimeOfDay (a)
#define exit(a) _endthread()
void S9xGetTimeOfDay (struct timeval *n);
#else
#include <unistd.h>
#include <sys/time.h>
#include <netdb.h>
#include <sys/socket.h>
#include <sys/param.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <signal.h>
#ifdef __SVR4
#include <sys/stropts.h>
#endif
#endif // !__WIN32__
#include "memmap.h"
#include "snapshot.h"
#include "netplay.h"
#ifdef __WIN32__
#define NP_ONE_CLIENT 1
#else
#define NP_ONE_CLIENT 0
#endif
struct SNPServer NPServer;
extern unsigned long START;
void S9xNPSendToAllClients (uint8 *data, int len);
bool8 S9xNPLoadFreezeFile (const char *fname, uint8 *&data, uint32 &len);
void S9xNPSendFreezeFile (int c, uint8 *data, uint32 len);
void S9xNPNoClientReady (int start_index = NP_ONE_CLIENT);
void S9xNPRecomputePause ();
void S9xNPWaitForEmulationToComplete ();
void S9xNPSendROMImageToAllClients ();
bool8 S9xNPSendROMImageToClient (int client);
void S9xNPSendSRAMToClient (int c);
void S9xNPSendSRAMToAllClients ();
void S9xNPSyncClient (int);
void S9xNPSendROMLoadRequest (const char *filename);
void S9xNPSendFreezeFileToAllClients (const char *filename);
void S9xNPStopServer ();
void S9xNPShutdownClient (int c, bool8 report_error = FALSE)
{
if (NPServer.Clients [c].Connected)
{
NPServer.Clients [c].Connected = FALSE;
NPServer.Clients [c].SaidHello = FALSE;
close (NPServer.Clients [c].Socket);
#ifdef NP_DEBUG
printf ("SERVER: Player %d disconnecting @%ld\n", c + 1, S9xGetMilliTime () - START);
#endif
if (report_error)
{
sprintf (NetPlay.ErrorMsg,
"Player %d on '%s' has disconnected.", c + 1,
NPServer.Clients [c].HostName);
S9xNPSetWarning (NetPlay.ErrorMsg);
}
if (NPServer.Clients [c].HostName)
{
free ((char *) NPServer.Clients [c].HostName);
NPServer.Clients [c].HostName = NULL;
}
if (NPServer.Clients [c].ROMName)
{
free ((char *) NPServer.Clients [c].ROMName);
NPServer.Clients [c].ROMName = NULL;
}
if (NPServer.Clients [c].Who)
{
free ((char *) NPServer.Clients [c].Who);
NPServer.Clients [c].Who = NULL;
}
NPServer.Joypads [c] = 0;
NPServer.NumClients--;
S9xNPRecomputePause ();
}
}
static bool8 S9xNPSGetData (int socket, uint8 *data, int length)
{
int len = length;
uint8 *ptr = data;
do
{
int num_bytes = len;
// Read the data in small chunks, allowing this thread to spot an
// abort request from another thread.
if (num_bytes > 512)
num_bytes = 512;
int got = read (socket, (char *) ptr, num_bytes);
if (got < 0)
{
if (errno == EINTR
#ifdef EAGAIN
|| errno == EAGAIN
#endif
#ifdef EWOULDBLOCK
|| errno == EWOULDBLOCK
#endif
#ifdef WSAEWOULDBLOCK
|| errno == WSAEWOULDBLOCK
#endif
)
continue;
#ifdef WSAEMSGSIZE
if (errno != WSAEMSGSIZE)
return (FALSE);
else
{
got = num_bytes;
#ifdef NP_DEBUG
printf ("SERVER: WSAEMSGSIZE, actual bytes %d while receiving data @%d\n", got, S9xGetMilliTime () - START);
#endif
}
#else
return (FALSE);
#endif
}
else
if (got == 0)
return (FALSE);
len -= got;
ptr += got;
} while (len > 0);
return (TRUE);
}
static bool8 S9xNPSSendData (int fd, const uint8 *data, int length)
{
int len = length;
int chunk = length / 50;
if (chunk < 1024)
chunk = 1024;
do
{
int num_bytes = len;
// Write the data in small chunks, allowing this thread to spot an
// abort request from another thread.
if (num_bytes > chunk)
num_bytes = chunk;
int sent;
sent = write (fd, (char *) data, len);
if (sent < 0)
{
if (errno == EINTR
#ifdef EAGAIN
|| errno == EAGAIN
#endif
#ifdef EWOULDBLOCK
|| errno == EWOULDBLOCK
#endif
)
{
#ifdef NP_DEBUG
printf ("SERVER: EINTR, EAGAIN or EWOULDBLOCK while sending data @%ld\n", S9xGetMilliTime () - START);
#endif
continue;
}
return (FALSE);
}
else
if (sent == 0)
return (FALSE);
len -= sent;
data += sent;
if (length > 1024)
{
#ifdef __WIN32__
int Percent = (uint8) (((length - len) * 100) / length);
PostMessage (GUI.hWnd, WM_USER, Percent, Percent);
Sleep (0);
#endif
}
} while (len > 0);
return (TRUE);
}
void S9xNPSendHeartBeat ()
{
int len = 3;
uint8 data [(3 + 4) * 8];
uint8 *ptr = data;
int n;
for (n = NP_MAX_CLIENTS - 1; n >= 0; n--)
{
if (NPServer.Clients [n].SaidHello)
break;
}
if (n >= 0)
{
bool8 Paused = NPServer.Paused != 0;
NPServer.FrameCount++;
*ptr++ = NP_SERV_MAGIC;
*ptr++ = 0; // Individual client sequence number will get placed here
*ptr++ = NP_SERV_JOYPAD | (n << 6) | ((Paused != 0) << 5);
WRITE_LONG (ptr, NPServer.FrameCount);
len += 4;
ptr += 4;
int i;
for (i = 0; i <= n; i++)
{
WRITE_LONG (ptr, NPServer.Joypads [i]);
len += 4;
ptr += 4;
}
S9xNPSendToAllClients (data, len);
}
}
void S9xNPSendToAllClients (uint8 *data, int len)
{
int i;
for (i = 0; i < NP_MAX_CLIENTS; i++)
{
if (NPServer.Clients [i].SaidHello)
{
data [1] = NPServer.Clients [i].SendSequenceNum++;
if (!S9xNPSSendData (NPServer.Clients [i].Socket, data, len))
S9xNPShutdownClient (i, TRUE);
}
}
}
void S9xNPProcessClient (int c)
{
uint8 header [7];
uint8 *data;
uint32 len;
uint8 *ptr;
if (!S9xNPSGetData (NPServer.Clients [c].Socket, header, 7))
{
S9xNPSetWarning ("SERVER: Failed to get message header from client.\n");
S9xNPShutdownClient (c, TRUE);
return;
}
if (header [0] != NP_CLNT_MAGIC)
{
S9xNPSetWarning ("SERVER: Bad header magic value received from client.\n");
S9xNPShutdownClient (c, TRUE);
return;
}
if (header [1] != NPServer.Clients [c].ReceiveSequenceNum)
{
#ifdef NP_DEBUG
printf ("SERVER: Messages lost from '%s', expected %d, got %d\n",
NPServer.Clients [c].HostName ?
NPServer.Clients [c].HostName : "Unknown",
NPServer.Clients [c].ReceiveSequenceNum,
header [1]);
#endif
sprintf (NetPlay.WarningMsg,
"SERVER: Messages lost from '%s', expected %d, got %d\n",
NPServer.Clients [c].HostName ?
NPServer.Clients [c].HostName : "Unknown",
NPServer.Clients [c].ReceiveSequenceNum,
header [1]);
NPServer.Clients [c].ReceiveSequenceNum = header [1] + 1;
S9xNPSetWarning (NetPlay.WarningMsg);
}
else
NPServer.Clients [c].ReceiveSequenceNum++;
len = READ_LONG (&header [3]);
switch (header [2] & 0x3f)
{
case NP_CLNT_HELLO:
#ifdef NP_DEBUG
printf ("SERVER: Got HELLO from client @%ld\n", S9xGetMilliTime () - START);
#endif
S9xNPSetAction ("Got HELLO from client...", TRUE);
if (len > 0x10000)
{
S9xNPSetWarning ("SERVER: Client HELLO message length error.");
S9xNPShutdownClient (c, TRUE);
return;
}
data = new uint8 [len - 7];
if (!S9xNPSGetData (NPServer.Clients [c].Socket, data, len - 7))
{
S9xNPSetWarning ("SERVER: Failed to get HELLO message content from client.");
S9xNPShutdownClient (c, TRUE);
return;
}
if (NPServer.NumClients <= NP_ONE_CLIENT)
{
NPServer.FrameTime = READ_LONG (data);
strncpy (NPServer.ROMName, (char *) &data [4], 29);
NPServer.ROMName [29] = 0;
}
NPServer.Clients [c].ROMName = strdup ((char *) &data [4]);
#ifdef NP_DEBUG
printf ("SERVER: Client is playing: %s, Frame Time: %d @%ld\n", data + 4, READ_LONG (data), S9xGetMilliTime () - START);
#endif
NPServer.Clients [c].SendSequenceNum = 0;
len = 7 + 1 + 1 + 4 + strlen (NPServer.ROMName) + 1;
delete[] data;
ptr = data = new uint8 [len];
*ptr++ = NP_SERV_MAGIC;
*ptr++ = NPServer.Clients [c].SendSequenceNum++;
if (NPServer.SendROMImageOnConnect &&
NPServer.NumClients > NP_ONE_CLIENT)
*ptr++ = NP_SERV_HELLO | 0x80;
else
*ptr++ = NP_SERV_HELLO;
WRITE_LONG (ptr, len);
ptr += 4;
*ptr++ = NP_VERSION;
*ptr++ = c + 1;
WRITE_LONG (ptr, NPServer.FrameCount);
ptr += 4;
strcpy ((char *) ptr, NPServer.ROMName);
#ifdef NP_DEBUG
printf ("SERVER: Sending welcome information to client @%ld...\n", S9xGetMilliTime () - START);
#endif
S9xNPSetAction ("SERVER: Sending welcome information to new client...", TRUE);
if (!S9xNPSSendData (NPServer.Clients [c].Socket, data, len))
{
S9xNPSetWarning ("SERVER: Failed to send welcome message to client.");
S9xNPShutdownClient (c, TRUE);
return;
}
delete[] data;
#ifdef NP_DEBUG
printf ("SERVER: Waiting for a response from the client @%ld...\n", S9xGetMilliTime () - START);
#endif
S9xNPSetAction ("SERVER: Waiting for a response from the client...", TRUE);
break;
case NP_CLNT_LOADED_ROM:
#ifdef NP_DEBUG
printf ("SERVER: Client %d loaded requested ROM @%ld...\n", c, S9xGetMilliTime () - START);
#endif
NPServer.Clients [c].SaidHello = TRUE;
NPServer.Clients [c].Ready = FALSE;
NPServer.Clients [c].Paused = FALSE;
S9xNPRecomputePause ();
S9xNPWaitForEmulationToComplete ();
if (NPServer.SyncByReset)
{
S9xNPServerAddTask (NP_SERVER_SEND_SRAM, (void *) (pint) c);
S9xNPServerAddTask (NP_SERVER_RESET_ALL, 0);
}
else
S9xNPServerAddTask (NP_SERVER_SYNC_CLIENT, (void *) (pint) c);
break;
case NP_CLNT_RECEIVED_ROM_IMAGE:
#ifdef NP_DEBUG
printf ("SERVER: Client %d received ROM image @%ld...\n", c, S9xGetMilliTime () - START);
#endif
NPServer.Clients [c].SaidHello = TRUE;
NPServer.Clients [c].Ready = FALSE;
NPServer.Clients [c].Paused = FALSE;
S9xNPRecomputePause ();
S9xNPWaitForEmulationToComplete ();
if (NPServer.SyncByReset)
{
S9xNPServerAddTask (NP_SERVER_SEND_SRAM, (void *) (pint) c);
S9xNPServerAddTask (NP_SERVER_RESET_ALL, 0);
}
else
S9xNPServerAddTask (NP_SERVER_SYNC_CLIENT, (void *) (pint) c);
break;
case NP_CLNT_WAITING_FOR_ROM_IMAGE:
#ifdef NP_DEBUG
printf ("SERVER: Client %d waiting for ROM image @%ld...\n", c, S9xGetMilliTime () - START);
#endif
NPServer.Clients [c].SaidHello = TRUE;
NPServer.Clients [c].Ready = FALSE;
NPServer.Clients [c].Paused = FALSE;
S9xNPRecomputePause ();
S9xNPSendROMImageToClient (c);
break;
case NP_CLNT_READY:
#ifdef NP_DEBUG
printf ("SERVER: Client %d ready @%ld...\n", c, S9xGetMilliTime () - START);
#endif
if (NPServer.Clients [c].SaidHello)
{
NPServer.Clients [c].Paused = FALSE;
NPServer.Clients [c].Ready = TRUE;
S9xNPRecomputePause ();
break;
}
NPServer.Clients [c].SaidHello = TRUE;
NPServer.Clients [c].Ready = TRUE;
NPServer.Clients [c].Paused = FALSE;
S9xNPRecomputePause ();
//printf ("SERVER: SaidHello = TRUE, SeqNum = %d @%d\n", NPServer.Clients [c].SendSequenceNum, S9xGetMilliTime () - START);
if (NPServer.NumClients > NP_ONE_CLIENT)
{
if (!NPServer.SendROMImageOnConnect)
{
S9xNPWaitForEmulationToComplete ();
if (NPServer.SyncByReset)
{
S9xNPServerAddTask (NP_SERVER_SEND_SRAM, (void *) (pint) c);
S9xNPServerAddTask (NP_SERVER_RESET_ALL, 0);
}
else
#ifdef __WIN32__
S9xNPServerAddTask (NP_SERVER_SYNC_CLIENT, (void *)(UINT_PTR) c);
#else
/* We need to resync all clients on new player connect as we don't have a 'reference game' */
S9xNPServerAddTask (NP_SERVER_SYNC_ALL, (void *) (pint) c);
#endif
}
}
else
{
NPServer.Clients [c].Ready = TRUE;
S9xNPRecomputePause ();
}
break;
case NP_CLNT_JOYPAD:
NPServer.Joypads [c] = len;
break;
case NP_CLNT_PAUSE:
#ifdef NP_DEBUG
printf ("SERVER: Client %d Paused: %s @%ld\n", c, (header [2] & 0x80) ? "YES" : "NO", S9xGetMilliTime () - START);
#endif
NPServer.Clients [c].Paused = (header [2] & 0x80) != 0;
if (NPServer.Clients [c].Paused)
sprintf (NetPlay.WarningMsg, "SERVER: Client %d has paused.", c + 1);
else
sprintf (NetPlay.WarningMsg, "SERVER: Client %d has resumed.", c + 1);
S9xNPSetWarning (NetPlay.WarningMsg);
S9xNPRecomputePause ();
break;
}
}
void S9xNPAcceptClient (int Listen, bool8 block)
{
struct sockaddr_in remote_address;
struct linger val2;
struct hostent *host;
int new_fd;
int i;
#ifdef NP_DEBUG
printf ("SERVER: attempting to accept new client connection @%ld\n", S9xGetMilliTime () - START);
#endif
S9xNPSetAction ("SERVER: Attempting to accept client connection...", TRUE);
memset (&remote_address, 0, sizeof (remote_address));
socklen_t len = sizeof (remote_address);
new_fd = accept (Listen, (struct sockaddr *)&remote_address, &len);
S9xNPSetAction ("Setting socket options...", TRUE);
val2.l_onoff = 1;
val2.l_linger = 0;
if (setsockopt (new_fd, SOL_SOCKET, SO_LINGER,
(char *) &val2, sizeof (val2)) < 0)
{
S9xNPSetError ("Setting socket options failed.");
close (new_fd);
return;
}
for (i = 0; i < NP_MAX_CLIENTS; i++)
{
if (!NPServer.Clients [i].Connected)
{
NPServer.NumClients++;
NPServer.Clients [i].Socket = new_fd;
NPServer.Clients [i].SendSequenceNum = 0;
NPServer.Clients [i].ReceiveSequenceNum = 0;
NPServer.Clients [i].Connected = TRUE;
NPServer.Clients [i].SaidHello = FALSE;
NPServer.Clients [i].Paused = FALSE;
NPServer.Clients [i].Ready = FALSE;
NPServer.Clients [i].ROMName = NULL;
NPServer.Clients [i].HostName = NULL;
NPServer.Clients [i].Who = NULL;
break;
}
}
if (i >= NP_MAX_CLIENTS)
{
S9xNPSetError ("SERVER: Maximum number of NetPlay Clients have already connected.");
close (new_fd);
return;
}
if (remote_address.sin_family == AF_INET)
{
#ifdef NP_DEBUG
printf ("SERVER: Looking up new client's hostname @%ld\n", S9xGetMilliTime () - START);
#endif
S9xNPSetAction ("SERVER: Looking up new client's hostname...", TRUE);
host = gethostbyaddr ((char *) &remote_address.sin_addr,
sizeof (remote_address.sin_addr), AF_INET);
if (host)
{
#ifdef NP_DEBUG
printf ("SERVER: resolved new client's hostname (%s) @%ld\n", host->h_name, S9xGetMilliTime () - START);
#endif
sprintf (NetPlay.WarningMsg, "SERVER: Player %d on %s has connected.", i + 1, host->h_name);
NPServer.Clients [i].HostName = strdup (host->h_name);
}
else
{
char *ip = inet_ntoa (remote_address.sin_addr);
if (ip)
NPServer.Clients [i].HostName = strdup (ip);
#ifdef NP_DEBUG
printf ("SERVER: couldn't resolve new client's hostname (%s) @%ld\n", ip ? ip : "Unknown", S9xGetMilliTime () - START);
#endif
sprintf (NetPlay.WarningMsg, "SERVER: Player %d on %s has connected.", i + 1, ip ? ip : "Unknown");
}
S9xNPSetWarning (NetPlay.WarningMsg);
}
#ifdef NP_DEBUG
printf ("SERVER: waiting for HELLO message from new client @%ld\n", S9xGetMilliTime () - START);
#endif
S9xNPSetAction ("SERVER: Waiting for HELLO message from new client...");
}
static bool8 server_continue = TRUE;
static bool8 S9xNPServerInit (int port)
{
struct sockaddr_in address;
int i;
int val;
if (!S9xNPInitialise ())
return (FALSE);
for (i = 0; i < NP_MAX_CLIENTS; i++)
{
NPServer.Clients [i].SendSequenceNum = 0;
NPServer.Clients [i].ReceiveSequenceNum = 0;
NPServer.Clients [i].Connected = FALSE;
NPServer.Clients [i].SaidHello = FALSE;
NPServer.Clients [i].Paused = FALSE;
NPServer.Clients [i].Ready = FALSE;
NPServer.Clients [i].Socket = 0;
NPServer.Clients [i].ROMName = NULL;
NPServer.Clients [i].HostName = NULL;
NPServer.Clients [i].Who = NULL;
NPServer.Joypads [i] = 0;
}
NPServer.NumClients = 0;
NPServer.FrameCount = 0;
#ifdef NP_DEBUG
printf ("SERVER: Creating socket @%ld\n", S9xGetMilliTime () - START);
#endif
if ((NPServer.Socket = socket (AF_INET, SOCK_STREAM, 0)) < 0)
{
S9xNPSetError ("NetPlay Server: Can't create listening socket.");
return (FALSE);
}
val = 1;
setsockopt (NPServer.Socket, SOL_SOCKET, SO_REUSEADDR,
(char *)&val, sizeof (val));
memset (&address, 0, sizeof (address));
address.sin_family = AF_INET;
address.sin_addr.s_addr = htonl (INADDR_ANY);
address.sin_port = htons (port);
#ifdef NP_DEBUG
printf ("SERVER: Binding socket to address and port @%ld\n", S9xGetMilliTime () - START);
#endif
if (bind (NPServer.Socket, (struct sockaddr *) &address, sizeof (address)) < 0)
{
S9xNPSetError ("NetPlay Server: Can't bind socket to port number.\nPort already in use?");
return (FALSE);
}
#ifdef NP_DEBUG
printf ("SERVER: Getting socket to listen @%ld\n", S9xGetMilliTime () - START);
#endif
if (listen (NPServer.Socket, NP_MAX_CLIENTS) < 0)
{
S9xNPSetError ("NetPlay Server: Can't get new socket to listen.");
return (FALSE);
}
#ifdef NP_DEBUG
printf ("SERVER: Init complete @%ld\n", S9xGetMilliTime () - START);
#endif
return (TRUE);
}
void S9xNPSendServerPause (bool8 paused)
{
#ifdef NP_DEBUG
printf ("SERVER: Pause - %s @%ld\n", paused ? "YES" : "NO", S9xGetMilliTime () - START);
#endif
uint8 pause [7];
uint8 *ptr = pause;
*ptr++ = NP_SERV_MAGIC;
*ptr++ = 0;
*ptr++ = NP_SERV_PAUSE | (paused ? 0x20 : 0);
WRITE_LONG (ptr, NPServer.FrameCount);
S9xNPSendToAllClients (pause, 7);
}
void S9xNPSendJoypadSwap()
{
#ifdef NP_DEBUG
printf("SERVER: Swap Joypads - @%ld\n", S9xGetMilliTime() - START);
#endif
uint8 swap[7];
uint8 *ptr = swap;
*ptr++ = NP_SERV_MAGIC;
*ptr++ = 0;
*ptr++ = NP_SERV_JOYPAD_SWAP;
WRITE_LONG(ptr, 7);
S9xNPSendToAllClients(swap, 7);
}
void S9xNPServerLoop (void *)
{
#ifdef __WIN32__
BOOL success = FALSE;
#else
bool8 success = FALSE;
static struct timeval next1 = {0, 0};
struct timeval now;
#endif
int pausedState = -1, newPausedState = -1;
while (server_continue)
{
fd_set read_fds;
struct timeval timeout;
int res;
int i;
int max_fd = NPServer.Socket;
#ifdef __WIN32__
Sleep (0);
#endif
if (success && !(Settings.Paused && !Settings.FrameAdvance) && !Settings.StopEmulation &&
!Settings.ForcedPause && !NPServer.Paused)
{
S9xNPSendHeartBeat ();
newPausedState = 0;
}
else
{
newPausedState = 1;
}
if(pausedState != newPausedState)
{
pausedState = newPausedState;
// S9xNPSendServerPause(pausedState); // XXX: doesn't seem to work yet...
}
do
{
FD_ZERO (&read_fds);
FD_SET (NPServer.Socket, &read_fds);
for (i = 0; i < NP_MAX_CLIENTS; i++)
{
if (NPServer.Clients [i].Connected)
{
FD_SET (NPServer.Clients [i].Socket, &read_fds);
if (NPServer.Clients [i].Socket > max_fd)
max_fd = NPServer.Clients [i].Socket;
}
}
timeout.tv_sec = 0;
timeout.tv_usec = 1000;
res = select (max_fd + 1, &read_fds, NULL, NULL, &timeout);
if (res > 0)
{
if (FD_ISSET (NPServer.Socket, &read_fds))
S9xNPAcceptClient (NPServer.Socket, FALSE);
for (i = 0; i < NP_MAX_CLIENTS; i++)
{
if (NPServer.Clients [i].Connected &&
FD_ISSET (NPServer.Clients [i].Socket, &read_fds))
{
S9xNPProcessClient (i);
}
}
}
} while (res > 0);
#ifdef __WIN32__
success = WaitForSingleObject (GUI.ServerTimerSemaphore, 200) == WAIT_OBJECT_0;
#else
while (gettimeofday (&now, NULL) < 0) ;
/* If there is no known "next" frame, initialize it now */
if (next1.tv_sec == 0) { next1 = now; ++next1.tv_usec; }
success=FALSE;
if (timercmp(&next1, &now, >))
{
/* If we're ahead of time, sleep a while */
unsigned timeleft =
(next1.tv_sec - now.tv_sec) * 1000000
+ next1.tv_usec - now.tv_usec;
usleep(timeleft<(200*1000)?timeleft:(200*1000));
}
if (!timercmp(&next1, &now, >))
{
/* Calculate the timestamp of the next frame. */
next1.tv_usec += Settings.FrameTime;
if (next1.tv_usec >= 1000000)
{
next1.tv_sec += next1.tv_usec / 1000000;
next1.tv_usec %= 1000000;
}
success=TRUE;
}
#endif
while (NPServer.TaskHead != NPServer.TaskTail)
{
void *task_data = NPServer.TaskQueue [NPServer.TaskHead].Data;
#if defined(NP_DEBUG) && NP_DEBUG == 2
printf ("SERVER: task %d @%ld\n", NPServer.TaskQueue [NPServer.TaskHead].Task, S9xGetMilliTime () - START);
#endif
switch (NPServer.TaskQueue [NPServer.TaskHead].Task)
{
case NP_SERVER_SEND_ROM_IMAGE:
S9xNPSendROMImageToAllClients ();
break;
case NP_SERVER_SYNC_CLIENT:
NPServer.Clients [(pint) task_data].Ready = FALSE;
S9xNPRecomputePause ();
S9xNPSyncClient ((pint) task_data);
break;
case NP_SERVER_SYNC_ALL:
S9xNPSyncClients ();
break;
case NP_SERVER_SEND_FREEZE_FILE_ALL:
S9xNPSendFreezeFileToAllClients ((char *) task_data);
free ((char *) task_data);
break;
case NP_SERVER_SEND_ROM_LOAD_REQUEST_ALL:
S9xNPSendROMLoadRequest ((char *) task_data);
free ((char *) task_data);
break;
case NP_SERVER_RESET_ALL:
S9xNPNoClientReady (0);
S9xNPWaitForEmulationToComplete ();
S9xNPSetAction ("SERVER: Sending RESET to all clients...", TRUE);
#ifdef NP_DEBUG
printf ("SERVER: Sending RESET to all clients @%ld\n", S9xGetMilliTime () - START);
#endif
{
uint8 reset [7];
uint8 *ptr;
ptr = reset;
*ptr++ = NP_SERV_MAGIC;
*ptr++ = 0;
*ptr++ = NP_SERV_RESET;
WRITE_LONG (ptr, NPServer.FrameCount);
S9xNPSendToAllClients (reset, 7);
}
S9xNPSetAction ("", TRUE);
break;
case NP_SERVER_SEND_SRAM:
NPServer.Clients [(pint) task_data].Ready = FALSE;
S9xNPRecomputePause ();
S9xNPWaitForEmulationToComplete ();
S9xNPSendSRAMToClient ((pint) task_data);
break;
case NP_SERVER_SEND_SRAM_ALL:
S9xNPNoClientReady ();
S9xNPWaitForEmulationToComplete ();
S9xNPSendSRAMToAllClients ();
break;
default:
S9xNPSetError ("SERVER: *** Unknown task ***\n");
break;
}
NPServer.TaskHead = (NPServer.TaskHead + 1) % NP_MAX_TASKS;
}
}
#ifdef NP_DEBUG
printf ("SERVER: Server thread exiting @%ld\n", S9xGetMilliTime () - START);
#endif
// OV2: S9xNPStopServer has already been called if we get here
// S9xNPStopServer ();
}
bool8 S9xNPStartServer (int port)
{
#ifdef __WIN32__
static int p;
p = port;
#endif
#ifdef NP_DEBUG
printf ("SERVER: Starting server on port %d @%ld\n", port, S9xGetMilliTime () - START);
#endif
server_continue = TRUE;
if (S9xNPServerInit (port))
#ifdef __WIN32__
return (_beginthread (S9xNPServerLoop, 0, &p) != (uintptr_t)(~0));
#else
S9xNPServerLoop(NULL);
return (TRUE);
#endif
return (FALSE);
}
void S9xNPStopServer ()
{
#ifdef NP_DEBUG
printf ("SERVER: Stopping server @%ld\n", S9xGetMilliTime () - START);
#endif
server_continue = FALSE;
close (NPServer.Socket);
for (int i = 0; i < NP_MAX_CLIENTS; i++)
{
if (NPServer.Clients [i].Connected)
S9xNPShutdownClient(i, FALSE);
}
}
#ifdef __WIN32__
void S9xGetTimeOfDay (struct timeval *n)
{
unsigned long t = S9xGetMilliTime ();
n->tv_sec = t / 1000;
n->tv_usec = (t % 1000) * 1000;
}
#endif
void S9xNPSendROMImageToAllClients ()
{
S9xNPNoClientReady ();
S9xNPWaitForEmulationToComplete ();
int c;
for (c = NP_ONE_CLIENT; c < NP_MAX_CLIENTS; c++)
{
if (NPServer.Clients [c].SaidHello)
S9xNPSendROMImageToClient (c);
}
if (NPServer.SyncByReset)
{
S9xNPServerAddTask (NP_SERVER_SEND_SRAM_ALL, 0);
S9xNPServerAddTask (NP_SERVER_RESET_ALL, 0);
}
else
S9xNPSyncClient (-1);
}
bool8 S9xNPSendROMImageToClient (int c)
{
#ifdef NP_DEBUG
printf ("SERVER: Sending ROM image to player %d @%ld\n", c + 1, S9xGetMilliTime () - START);
#endif
sprintf (NetPlay.ActionMsg, "Sending ROM image to player %d...", c + 1);
S9xNPSetAction (NetPlay.ActionMsg, TRUE);
uint8 header [7 + 1 + 4];
uint8 *ptr = header;
int len = sizeof (header) + Memory.CalculatedSize +
Memory.ROMFilename.length() + 1;
*ptr++ = NP_SERV_MAGIC;
*ptr++ = NPServer.Clients [c].SendSequenceNum++;
*ptr++ = NP_SERV_ROM_IMAGE;
WRITE_LONG (ptr, len);
ptr += 4;
*ptr++ = Memory.HiROM;
WRITE_LONG (ptr, Memory.CalculatedSize);
if (!S9xNPSSendData (NPServer.Clients [c].Socket, header, sizeof (header)) ||
!S9xNPSSendData (NPServer.Clients [c].Socket, Memory.ROM,
Memory.CalculatedSize) ||
!S9xNPSSendData (NPServer.Clients [c].Socket, (uint8 *) Memory.ROMFilename.c_str(),
Memory.ROMFilename.length() + 1))
{
S9xNPShutdownClient (c, TRUE);
return (FALSE);
}
return (TRUE);
}
void S9xNPSyncClients ()
{
S9xNPNoClientReady ();
S9xNPSyncClient (-1);
}
void S9xNPSyncClient (int client)
{
#ifdef HAVE_MKSTEMP
char fname[] = "/tmp/snes9x_fztmpXXXXXX";
int fd=-1;
#else
char fname [L_tmpnam];
#endif
S9xNPWaitForEmulationToComplete ();