aboutsummaryrefslogtreecommitdiff
path: root/tests/server/rtspd.c
blob: 273fddb6118747f2a1d571fbb9d279d95805db97 (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
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution. The terms
 * are also available at http://curl.haxx.se/docs/copyright.html.
 *
 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 * copies of the Software, and permit persons to whom the Software is
 * furnished to do so, under the terms of the COPYING file.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 * $Id$
 ***************************************************************************/

/*
 * curl's test suite Real Time Streaming Protocol (RTSP) server.
 *
 * This source file was started based on curl's HTTP test suite server.
 */

#include "setup.h" /* portability help from the lib directory */

#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_NETINET_TCP_H
#include <netinet/tcp.h> /* for TCP_NODELAY */
#endif

#define ENABLE_CURLX_PRINTF
/* make the curlx header define all printf() functions to use the curlx_*
   versions instead */
#include "curlx.h" /* from the private lib dir */
#include "getpart.h"
#include "util.h"

/* include memdebug.h last */
#include "memdebug.h"

#ifdef ENABLE_IPV6
static bool use_ipv6 = FALSE;
#endif
static const char *ipv_inuse = "IPv4";
static int serverlogslocked = 0;

#define REQBUFSIZ 150000
#define REQBUFSIZ_TXT "149999"

static long prevtestno=-1;    /* previous test number we served */
static long prevpartno=-1;    /* previous part number we served */
static bool prevbounce=FALSE; /* instructs the server to increase the part
                                 number for a test in case the identical
                                 testno+partno request shows up again */

#define RCMD_NORMALREQ 0 /* default request, use the tests file normally */
#define RCMD_IDLE      1 /* told to sit idle */
#define RCMD_STREAM    2 /* told to stream */

typedef enum {
  RPROT_NONE = 0,
  RPROT_RTSP = 1,
  RPROT_HTTP = 2
} reqprot_t;

struct httprequest {
  char reqbuf[REQBUFSIZ]; /* buffer area for the incoming request */
  size_t checkindex; /* where to start checking of the request */
  size_t offset;     /* size of the incoming request */
  long testno;       /* test number found in the request */
  long partno;       /* part number found in the request */
  bool open;      /* keep connection open info, as found in the request */
  bool auth_req;  /* authentication required, don't wait for body unless
                     there's an Authorization header */
  bool auth;      /* Authorization header present in the incoming request */
  size_t cl;      /* Content-Length of the incoming request */
  bool digest;    /* Authorization digest header found */
  bool ntlm;      /* Authorization ntlm header found */
  int pipe;       /* if non-zero, expect this many requests to do a "piped"
                     request/response */
  int skip;       /* if non-zero, the server is instructed to not read this
                     many bytes from a PUT/POST request. Ie the client sends N
                     bytes said in Content-Length, but the server only reads N
                     - skip bytes. */
  int rcmd;       /* doing a special command, see defines above */
  reqprot_t protocol; /* request protocol, HTTP or RTSP */
  int prot_version;   /* HTTP or RTSP version (major*10 + minor) */
  bool pipelining;    /* true if request is pipelined */
  char *rtp_buffer;
  size_t rtp_buffersize;
};

static int ProcessRequest(struct httprequest *req);
static void storerequest(char *reqbuf, size_t totalsize);

#define DEFAULT_PORT 8999

#ifndef DEFAULT_LOGFILE
#define DEFAULT_LOGFILE "log/rtspd.log"
#endif

const char *serverlogfile = DEFAULT_LOGFILE;

#define RTSPDVERSION "cURL test suite RTSP server/0.1"

#define REQUEST_DUMP  "log/server.input"
#define RESPONSE_DUMP "log/server.response"

/* very-big-path support */
#define MAXDOCNAMELEN 140000
#define MAXDOCNAMELEN_TXT "139999"

#define REQUEST_KEYWORD_SIZE 256
#define REQUEST_KEYWORD_SIZE_TXT "255"

#define CMD_AUTH_REQUIRED "auth_required"

/* 'idle' means that it will accept the request fine but never respond
   any data. Just keep the connection alive. */
#define CMD_IDLE "idle"

/* 'stream' means to send a never-ending stream of data */
#define CMD_STREAM "stream"

#define END_OF_HEADERS "\r\n\r\n"

enum {
  DOCNUMBER_NOTHING = -7,
  DOCNUMBER_QUIT    = -6,
  DOCNUMBER_BADCONNECT = -5,
  DOCNUMBER_INTERNAL= -4,
  DOCNUMBER_CONNECT = -3,
  DOCNUMBER_WERULEZ = -2,
  DOCNUMBER_404     = -1
};


/* sent as reply to a QUIT */
static const char *docquit =
"HTTP/1.1 200 Goodbye" END_OF_HEADERS;

/* sent as reply to a CONNECT */
static const char *docconnect =
"HTTP/1.1 200 Mighty fine indeed" END_OF_HEADERS;

/* sent as reply to a "bad" CONNECT */
static const char *docbadconnect =
"HTTP/1.1 501 Forbidden you fool" END_OF_HEADERS;

/* send back this on HTTP 404 file not found */
static const char *doc404_HTTP = "HTTP/1.1 404 Not Found\r\n"
    "Server: " RTSPDVERSION "\r\n"
    "Connection: close\r\n"
    "Content-Type: text/html"
    END_OF_HEADERS
    "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\n"
    "<HTML><HEAD>\n"
    "<TITLE>404 Not Found</TITLE>\n"
    "</HEAD><BODY>\n"
    "<H1>Not Found</H1>\n"
    "The requested URL was not found on this server.\n"
    "<P><HR><ADDRESS>" RTSPDVERSION "</ADDRESS>\n" "</BODY></HTML>\n";

/* send back this on RTSP 404 file not found */
static const char *doc404_RTSP = "RTSP/1.0 404 Not Found\r\n"
    "Server: " RTSPDVERSION "\r\n"
    END_OF_HEADERS;

/* Default size to send away fake RTP data */
#define RTP_DATA_SIZE 12
static const char *RTP_DATA = "$_1234\n\0asdf";

/* do-nothing macro replacement for systems which lack siginterrupt() */

#ifndef HAVE_SIGINTERRUPT
#define siginterrupt(x,y) do {} while(0)
#endif

/* vars used to keep around previous signal handlers */

typedef RETSIGTYPE (*SIGHANDLER_T)(int);

#ifdef SIGHUP
static SIGHANDLER_T old_sighup_handler  = SIG_ERR;
#endif

#ifdef SIGPIPE
static SIGHANDLER_T old_sigpipe_handler = SIG_ERR;
#endif

#ifdef SIGALRM
static SIGHANDLER_T old_sigalrm_handler = SIG_ERR;
#endif

#ifdef SIGINT
static SIGHANDLER_T old_sigint_handler  = SIG_ERR;
#endif

#ifdef SIGTERM
static SIGHANDLER_T old_sigterm_handler = SIG_ERR;
#endif

/* var which if set indicates that the program should finish execution */

SIG_ATOMIC_T got_exit_signal = 0;

/* if next is set indicates the first signal handled in exit_signal_handler */

static volatile int exit_signal = 0;

/* signal handler that will be triggered to indicate that the program
  should finish its execution in a controlled manner as soon as possible.
  The first time this is called it will set got_exit_signal to one and
  store in exit_signal the signal that triggered its execution. */

static RETSIGTYPE exit_signal_handler(int signum)
{
  int old_errno = ERRNO;
  if(got_exit_signal == 0) {
    got_exit_signal = 1;
    exit_signal = signum;
  }
  (void)signal(signum, exit_signal_handler);
  SET_ERRNO(old_errno);
}

static void install_signal_handlers(void)
{
#ifdef SIGHUP
  /* ignore SIGHUP signal */
  if((old_sighup_handler = signal(SIGHUP, SIG_IGN)) == SIG_ERR)
    logmsg("cannot install SIGHUP handler: %s", strerror(ERRNO));
#endif
#ifdef SIGPIPE
  /* ignore SIGPIPE signal */
  if((old_sigpipe_handler = signal(SIGPIPE, SIG_IGN)) == SIG_ERR)
    logmsg("cannot install SIGPIPE handler: %s", strerror(ERRNO));
#endif
#ifdef SIGALRM
  /* ignore SIGALRM signal */
  if((old_sigalrm_handler = signal(SIGALRM, SIG_IGN)) == SIG_ERR)
    logmsg("cannot install SIGALRM handler: %s", strerror(ERRNO));
#endif
#ifdef SIGINT
  /* handle SIGINT signal with our exit_signal_handler */
  if((old_sigint_handler = signal(SIGINT, exit_signal_handler)) == SIG_ERR)
    logmsg("cannot install SIGINT handler: %s", strerror(ERRNO));
  else
    siginterrupt(SIGINT, 1);
#endif
#ifdef SIGTERM
  /* handle SIGTERM signal with our exit_signal_handler */
  if((old_sigterm_handler = signal(SIGTERM, exit_signal_handler)) == SIG_ERR)
    logmsg("cannot install SIGTERM handler: %s", strerror(ERRNO));
  else
    siginterrupt(SIGTERM, 1);
#endif
}

static void restore_signal_handlers(void)
{
#ifdef SIGHUP
  if(SIG_ERR != old_sighup_handler)
    (void)signal(SIGHUP, old_sighup_handler);
#endif
#ifdef SIGPIPE
  if(SIG_ERR != old_sigpipe_handler)
    (void)signal(SIGPIPE, old_sigpipe_handler);
#endif
#ifdef SIGALRM
  if(SIG_ERR != old_sigalrm_handler)
    (void)signal(SIGALRM, old_sigalrm_handler);
#endif
#ifdef SIGINT
  if(SIG_ERR != old_sigint_handler)
    (void)signal(SIGINT, old_sigint_handler);
#endif
#ifdef SIGTERM
  if(SIG_ERR != old_sigterm_handler)
    (void)signal(SIGTERM, old_sigterm_handler);
#endif
}

static int ProcessRequest(struct httprequest *req)
{
  char *line=&req->reqbuf[req->checkindex];
  bool chunked = FALSE;
  static char request[REQUEST_KEYWORD_SIZE];
  static char doc[MAXDOCNAMELEN];
  static char prot_str[5];
  char logbuf[256];
  int prot_major, prot_minor;
  char *end;
  int error;
  end = strstr(line, END_OF_HEADERS);

  logmsg("ProcessRequest() called with testno %ld and line [%s]",
         req->testno, line);

  /* try to figure out the request characteristics as soon as possible, but
     only once! */
  if((req->testno == DOCNUMBER_NOTHING) &&
     sscanf(line,
            "%" REQUEST_KEYWORD_SIZE_TXT"s %" MAXDOCNAMELEN_TXT "s %4s/%d.%d",
            request,
            doc,
            prot_str,
            &prot_major,
            &prot_minor) == 5) {
    char *ptr;

    if(!strcmp(prot_str, "HTTP")) {
        req->protocol = RPROT_HTTP;
    }
    else if(!strcmp(prot_str, "RTSP")) {
        req->protocol = RPROT_RTSP;
    }
    else {
        req->protocol = RPROT_NONE;
        logmsg("got unknown protocol %s", prot_str);
        return 1;
    }

    req->prot_version = prot_major*10 + prot_minor;

    /* find the last slash */
    ptr = strrchr(doc, '/');

    /* get the number after it */
    if(ptr) {
      FILE *stream;
      char *filename;

      if((strlen(doc) + strlen(request)) < 200)
        sprintf(logbuf, "Got request: %s %s %s/%d.%d",
                request, doc, prot_str, prot_major, prot_minor);
      else
        sprintf(logbuf, "Got a *HUGE* request %s/%d.%d",
                prot_str, prot_major, prot_minor);
      logmsg("%s", logbuf);

      if(!strncmp("/verifiedserver", ptr, 15)) {
        logmsg("Are-we-friendly question received");
        req->testno = DOCNUMBER_WERULEZ;
        return 1; /* done */
      }

      if(!strncmp("/quit", ptr, 5)) {
        logmsg("Request-to-quit received");
        req->testno = DOCNUMBER_QUIT;
        return 1; /* done */
      }

      ptr++; /* skip the slash */

      /* skip all non-numericals following the slash */
      while(*ptr && !ISDIGIT(*ptr))
        ptr++;

      req->testno = strtol(ptr, &ptr, 10);

      if(req->testno > 10000) {
        req->partno = req->testno % 10000;
        req->testno /= 10000;
      }
      else
        req->partno = 0;

      sprintf(logbuf, "Requested test number %ld part %ld",
              req->testno, req->partno);
      logmsg("%s", logbuf);

      filename = test2file(req->testno);

      stream=fopen(filename, "rb");
      if(!stream) {
        error = ERRNO;
        logmsg("fopen() failed with error: %d %s", error, strerror(error));
        logmsg("Error opening file: %s", filename);
        logmsg("Couldn't open test file %ld", req->testno);
        req->open = FALSE; /* closes connection */
        return 1; /* done */
      }
      else {
        char *cmd = NULL;
        size_t cmdsize = 0;
        int num=0;

        int rtp_channel = 0;
        int rtp_size = 0;
        int rtp_partno = -1;
        int i = 0;
        char *rtp_scratch = NULL;

        /* get the custom server control "commands" */
        cmd = (char *)spitout(stream, "reply", "servercmd", &cmdsize);
        ptr = cmd;
        fclose(stream);

        if(cmdsize) {
          logmsg("Found a reply-servercmd section!");
          do {
            if(!strncmp(CMD_AUTH_REQUIRED, ptr, strlen(CMD_AUTH_REQUIRED))) {
              logmsg("instructed to require authorization header");
              req->auth_req = TRUE;
            }
            else if(!strncmp(CMD_IDLE, ptr, strlen(CMD_IDLE))) {
              logmsg("instructed to idle");
              req->rcmd = RCMD_IDLE;
              req->open = TRUE;
            }
            else if(!strncmp(CMD_STREAM, ptr, strlen(CMD_STREAM))) {
              logmsg("instructed to stream");
              req->rcmd = RCMD_STREAM;
            }
            else if(1 == sscanf(ptr, "pipe: %d", &num)) {
              logmsg("instructed to allow a pipe size of %d", num);
              if(num < 0)
                logmsg("negative pipe size ignored");
              else if(num > 0)
                req->pipe = num-1; /* decrease by one since we don't count the
                                      first request in this number */
            }
            else if(1 == sscanf(ptr, "skip: %d", &num)) {
              logmsg("instructed to skip this number of bytes %d", num);
              req->skip = num;
            }
            else if(3 == sscanf(ptr, "rtp: part %d channel %d size %d",
                                &rtp_partno, &rtp_channel, &rtp_size)) {

              if(rtp_partno == req->partno) {
                logmsg("RTP: part %d channel %d size %d",
                       rtp_partno, rtp_channel, rtp_size);

                /* Make our scratch buffer enough to fit all the
                 * desired data and one for padding */
                rtp_scratch = malloc(rtp_size + 4 + RTP_DATA_SIZE);

                /* RTP is signalled with a $ */
                rtp_scratch[0] = '$';

                /* The channel follows and is one byte */
                rtp_scratch[1] = (char)(rtp_channel & 0xFF);

                /* Length follows and is a two byte short in network order */
                *((unsigned short *)(&rtp_scratch[2])) =
                  htons((unsigned short)rtp_size);

                /* Fill it with junk data */
                for(i = 0; i < rtp_size; i+= RTP_DATA_SIZE) {
                  memcpy(rtp_scratch + 4 + i, RTP_DATA, RTP_DATA_SIZE);
                }

                if(req->rtp_buffer == NULL) {
                  req->rtp_buffer = rtp_scratch;
                  req->rtp_buffersize = rtp_size + 4;
                } else {
                  req->rtp_buffer = realloc(req->rtp_buffer, req->rtp_buffersize + rtp_size + 4);
                  memcpy(req->rtp_buffer + req->rtp_buffersize, rtp_scratch, rtp_size + 4);
                  req->rtp_buffersize += rtp_size + 4;
                  free(rtp_scratch);
                }
                logmsg("rtp_buffersize is %zu, rtp_size is %d.", req->rtp_buffersize, rtp_size);

              }
            }
            else {
              logmsg("funny instruction found: %s", ptr);
            }

            ptr = strchr(ptr, '\n');
            if(ptr)
              ptr++;
            else
              ptr = NULL;
          } while(ptr && *ptr);
          logmsg("Done parsing server commands");
        }
      }
    }
    else {
      if(sscanf(req->reqbuf, "CONNECT %" MAXDOCNAMELEN_TXT "s HTTP/%d.%d",
                doc, &prot_major, &prot_minor) == 3) {
        sprintf(logbuf, "Received a CONNECT %s HTTP/%d.%d request",
                doc, prot_major, prot_minor);
        logmsg("%s", logbuf);

        if(req->prot_version == 10)
          req->open = FALSE; /* HTTP 1.0 closes connection by default */

        if(!strncmp(doc, "bad", 3))
          /* if the host name starts with bad, we fake an error here */
          req->testno = DOCNUMBER_BADCONNECT;
        else if(!strncmp(doc, "test", 4)) {
          /* if the host name starts with test, the port number used in the
             CONNECT line will be used as test number! */
          char *portp = strchr(doc, ':');
          if(portp)
            req->testno = atoi(portp+1);
          else
            req->testno = DOCNUMBER_CONNECT;
        }
        else
          req->testno = DOCNUMBER_CONNECT;
      }
      else {
        logmsg("Did not find test number in PATH");
        req->testno = DOCNUMBER_404;
      }
    }
  }

  if(!end) {
    /* we don't have a complete request yet! */
    logmsg("ProcessRequest returned without a complete request");
    return 0; /* not complete yet */
  }
  logmsg("ProcessRequest found a complete request");

  if(req->pipe)
    /* we do have a full set, advance the checkindex to after the end of the
       headers, for the pipelining case mostly */
    req->checkindex += (end - line) + strlen(END_OF_HEADERS);

  /* **** Persistence ****
   *
   * If the request is a HTTP/1.0 one, we close the connection unconditionally
   * when we're done.
   *
   * If the request is a HTTP/1.1 one, we MUST check for a "Connection:"
   * header that might say "close". If it does, we close a connection when
   * this request is processed. Otherwise, we keep the connection alive for X
   * seconds.
   */

  do {
    if(got_exit_signal)
      return 1; /* done */

    if((req->cl==0) && curlx_strnequal("Content-Length:", line, 15)) {
      /* If we don't ignore content-length, we read it and we read the whole
         request including the body before we return. If we've been told to
         ignore the content-length, we will return as soon as all headers
         have been received */
      size_t cl = strtol(line+15, &line, 10);
      req->cl = cl - req->skip;

      logmsg("Found Content-Length: %zu in the request", cl);
      if(req->skip)
        logmsg("... but will abort after %zu bytes", req->cl);
      break;
    }
    else if(curlx_strnequal("Transfer-Encoding: chunked", line,
                            strlen("Transfer-Encoding: chunked"))) {
      /* chunked data coming in */
      chunked = TRUE;
    }

    if(chunked) {
      if(strstr(req->reqbuf, "\r\n0\r\n\r\n"))
        /* end of chunks reached */
        return 1; /* done */
      else
        return 0; /* not done */
    }

    line = strchr(line, '\n');
    if(line)
      line++;

  } while(line);

  if(!req->auth && strstr(req->reqbuf, "Authorization:")) {
    req->auth = TRUE; /* Authorization: header present! */
    if(req->auth_req)
      logmsg("Authorization header found, as required");
  }

  if(!req->digest && strstr(req->reqbuf, "Authorization: Digest")) {
    /* If the client is passing this Digest-header, we set the part number
       to 1000. Not only to spice up the complexity of this, but to make
       Digest stuff to work in the test suite. */
    req->partno += 1000;
    req->digest = TRUE; /* header found */
    logmsg("Received Digest request, sending back data %ld", req->partno);
  }
  else if(!req->ntlm &&
          strstr(req->reqbuf, "Authorization: NTLM TlRMTVNTUAAD")) {
    /* If the client is passing this type-3 NTLM header */
    req->partno += 1002;
    req->ntlm = TRUE; /* NTLM found */
    logmsg("Received NTLM type-3, sending back data %ld", req->partno);
    if(req->cl) {
      logmsg("  Expecting %zu POSTed bytes", req->cl);
    }
  }
  else if(!req->ntlm &&
          strstr(req->reqbuf, "Authorization: NTLM TlRMTVNTUAAB")) {
    /* If the client is passing this type-1 NTLM header */
    req->partno += 1001;
    req->ntlm = TRUE; /* NTLM found */
    logmsg("Received NTLM type-1, sending back data %ld", req->partno);
  }
  else if((req->partno >= 1000) && strstr(req->reqbuf, "Authorization: Basic")) {
    /* If the client is passing this Basic-header and the part number is already
       >=1000, we add 1 to the part number.  This allows simple Basic authentication
       negotiation to work in the test suite. */
    req->partno += 1;
    logmsg("Received Basic request, sending back data %ld", req->partno);
  }
  if(strstr(req->reqbuf, "Connection: close"))
    req->open = FALSE; /* close connection after this request */

  if(!req->pipe &&
     req->open &&
     req->prot_version >= 11 &&
     end &&
     req->reqbuf + req->offset > end + strlen(END_OF_HEADERS) &&
     (!strncmp(req->reqbuf, "GET", strlen("GET")) ||
      !strncmp(req->reqbuf, "HEAD", strlen("HEAD")))) {
    /* If we have a persistent connection, HTTP version >= 1.1
       and GET/HEAD request, enable pipelining. */
    req->checkindex = (end - req->reqbuf) + strlen(END_OF_HEADERS);
    req->pipelining = TRUE;
  }

  while(req->pipe) {
    if(got_exit_signal)
      return 1; /* done */
    /* scan for more header ends within this chunk */
    line = &req->reqbuf[req->checkindex];
    end = strstr(line, END_OF_HEADERS);
    if(!end)
      break;
    req->checkindex += (end - line) + strlen(END_OF_HEADERS);
    req->pipe--;
  }

  /* If authentication is required and no auth was provided, end now. This
     makes the server NOT wait for PUT/POST data and you can then make the
     test case send a rejection before any such data has been sent. Test case
     154 uses this.*/
  if(req->auth_req && !req->auth)
    return 1; /* done */

  if(req->cl > 0) {
    if(req->cl <= req->offset - (end - req->reqbuf) - strlen(END_OF_HEADERS))
      return 1; /* done */
    else
      return 0; /* not complete yet */
  }

  return 1; /* done */
}

/* store the entire request in a file */
static void storerequest(char *reqbuf, size_t totalsize)
{
  int res;
  int error = 0;
  size_t written;
  size_t writeleft;
  FILE *dump;

  if (reqbuf == NULL)
    return;
  if (totalsize == 0)
    return;

  do {
    dump = fopen(REQUEST_DUMP, "ab");
  } while ((dump == NULL) && ((error = ERRNO) == EINTR));
  if (dump == NULL) {
    logmsg("Error opening file %s error: %d %s",
           REQUEST_DUMP, error, strerror(error));
    logmsg("Failed to write request input to " REQUEST_DUMP);
    return;
  }

  writeleft = totalsize;
  do {
    written = fwrite(&reqbuf[totalsize-writeleft],
                     1, writeleft, dump);
    if(got_exit_signal)
      goto storerequest_cleanup;
    if(written > 0)
      writeleft -= written;
  } while ((writeleft > 0) && ((error = ERRNO) == EINTR));

  if(writeleft == 0)
    logmsg("Wrote request (%zu bytes) input to " REQUEST_DUMP, totalsize);
  else if(writeleft > 0) {
    logmsg("Error writing file %s error: %d %s",
           REQUEST_DUMP, error, strerror(error));
    logmsg("Wrote only (%zu bytes) of (%zu bytes) request input to %s",
           totalsize-writeleft, totalsize, REQUEST_DUMP);
  }

storerequest_cleanup:

  do {
    res = fclose(dump);
  } while(res && ((error = ERRNO) == EINTR));
  if(res)
    logmsg("Error closing file %s error: %d %s",
           REQUEST_DUMP, error, strerror(error));
}

/* return 0 on success, non-zero on failure */
static int get_request(curl_socket_t sock, struct httprequest *req)
{
  int error;
  int fail = 0;
  int done_processing = 0;
  char *reqbuf = req->reqbuf;
  ssize_t got = 0;

  char *pipereq = NULL;
  size_t pipereq_length = 0;

  if(req->pipelining) {
    pipereq = reqbuf + req->checkindex;
    pipereq_length = req->offset - req->checkindex;
  }

  /*** Init the httprequest structure properly for the upcoming request ***/

  req->checkindex = 0;
  req->offset = 0;
  req->testno = DOCNUMBER_NOTHING;
  req->partno = 0;
  req->open = TRUE;
  req->auth_req = FALSE;
  req->auth = FALSE;
  req->cl = 0;
  req->digest = FALSE;
  req->ntlm = FALSE;
  req->pipe = 0;
  req->skip = 0;
  req->rcmd = RCMD_NORMALREQ;
  req->protocol = RPROT_NONE;
  req->prot_version = 0;
  req->pipelining = FALSE;
  req->rtp_buffer = NULL;
  req->rtp_buffersize = 0;

  /*** end of httprequest init ***/

  while(!done_processing && (req->offset < REQBUFSIZ-1)) {
    if(pipereq_length && pipereq) {
      memmove(reqbuf, pipereq, pipereq_length);
      got = pipereq_length;
      pipereq_length = 0;
    }
    else {
      if(req->skip)
        /* we are instructed to not read the entire thing, so we make sure to only
           read what we're supposed to and NOT read the enire thing the client
           wants to send! */
        got = sread(sock, reqbuf + req->offset, req->cl);
      else
        got = sread(sock, reqbuf + req->offset, REQBUFSIZ-1 - req->offset);
    }
    if(got_exit_signal)
      return 1;
    if(got == 0) {
      logmsg("Connection closed by client");
      fail = 1;
    }
    else if(got < 0) {
      error = SOCKERRNO;
      logmsg("recv() returned error: (%d) %s", error, strerror(error));
      fail = 1;
    }
    if(fail) {
      /* dump the request received so far to the external file */
      reqbuf[req->offset] = '\0';
      storerequest(reqbuf, req->offset);
      return 1;
    }

    logmsg("Read %zd bytes", got);

    req->offset += (size_t)got;
    reqbuf[req->offset] = '\0';

    done_processing = ProcessRequest(req);
    if(got_exit_signal)
      return 1;
    if(done_processing && req->pipe) {
      logmsg("Waiting for another piped request");
      done_processing = 0;
      req->pipe--;
    }
  }

  if((req->offset == REQBUFSIZ-1) && (got > 0)) {
    logmsg("Request would overflow buffer, closing connection");
    /* dump request received so far to external file anyway */
    reqbuf[REQBUFSIZ-1] = '\0';
    fail = 1;
  }
  else if(req->offset > REQBUFSIZ-1) {
    logmsg("Request buffer overflow, closing connection");
    /* dump request received so far to external file anyway */
    reqbuf[REQBUFSIZ-1] = '\0';
    fail = 1;
  }
  else
    reqbuf[req->offset] = '\0';

  /* dump the request to an external file */
  storerequest(reqbuf, req->pipelining ? req->checkindex : req->offset);
  if(got_exit_signal)
    return 1;

  return fail; /* return 0 on success */
}

/* returns -1 on failure */
static int send_doc(curl_socket_t sock, struct httprequest *req)
{
  ssize_t written;
  size_t count;
  const char *buffer;
  char *ptr=NULL;
  FILE *stream;
  char *cmd=NULL;
  size_t cmdsize=0;
  FILE *dump;
  bool persistant = TRUE;
  bool sendfailure = FALSE;
  size_t responsesize;
  int error = 0;
  int res;

  static char weare[256];

  char partbuf[80]="data";

  logmsg("Send response number %ld part %ld", req->testno, req->partno);

  switch(req->rcmd) {
  default:
  case RCMD_NORMALREQ:
    break; /* continue with business as usual */
  case RCMD_STREAM:
#define STREAMTHIS "a string to stream 01234567890\n"
    count = strlen(STREAMTHIS);
    for (;;) {
      written = swrite(sock, STREAMTHIS, count);
      if(got_exit_signal)
        return -1;
      if(written != (ssize_t)count) {
        logmsg("Stopped streaming");
        break;
      }
    }
    return -1;
  case RCMD_IDLE:
    /* Do nothing. Sit idle. Pretend it rains. */
    return 0;
  }

  req->open = FALSE;

  if(req->testno < 0) {
    size_t msglen;
    char msgbuf[64];

    switch(req->testno) {
    case DOCNUMBER_QUIT:
      logmsg("Replying to QUIT");
      buffer = docquit;
      break;
    case DOCNUMBER_WERULEZ:
      /* we got a "friends?" question, reply back that we sure are */
      logmsg("Identifying ourselves as friends");
      sprintf(msgbuf, "RTSP_SERVER WE ROOLZ: %ld\r\n", (long)getpid());
      msglen = strlen(msgbuf);
      sprintf(weare, "HTTP/1.1 200 OK\r\nContent-Length: %zu\r\n\r\n%s",
              msglen, msgbuf);
      buffer = weare;
      break;
    case DOCNUMBER_INTERNAL:
      logmsg("Bailing out due to internal error");
      return -1;
    case DOCNUMBER_CONNECT:
      logmsg("Replying to CONNECT");
      buffer = docconnect;
      break;
    case DOCNUMBER_BADCONNECT:
      logmsg("Replying to a bad CONNECT");
      buffer = docbadconnect;
      break;
    case DOCNUMBER_404:
    default:
      logmsg("Replying to with a 404");
      if(req->protocol == RPROT_HTTP) {
          buffer = doc404_HTTP;
      } else {
          buffer = doc404_RTSP;
      }
      break;
    }

    count = strlen(buffer);
  }
  else {
    char *filename = test2file(req->testno);

    if(0 != req->partno)
      sprintf(partbuf, "data%ld", req->partno);

    stream=fopen(filename, "rb");
    if(!stream) {
      error = ERRNO;
      logmsg("fopen() failed with error: %d %s", error, strerror(error));
      logmsg("Error opening file: %s", filename);
      logmsg("Couldn't open test file");
      return 0;
    }
    else {
      buffer = spitout(stream, "reply", partbuf, &count);
      ptr = (char *)buffer;
      fclose(stream);
    }

    if(got_exit_signal)
      return -1;

    /* re-open the same file again */
    stream=fopen(filename, "rb");
    if(!stream) {
      error = ERRNO;
      logmsg("fopen() failed with error: %d %s", error, strerror(error));
      logmsg("Error opening file: %s", filename);
      logmsg("Couldn't open test file");
      return 0;
    }
    else {
      /* get the custom server control "commands" */
      cmd = (char *)spitout(stream, "reply", "postcmd", &cmdsize);
      fclose(stream);
    }
  }

  if(got_exit_signal)
    return -1;

  /* If the word 'swsclose' is present anywhere in the reply chunk, the
     connection will be closed after the data has been sent to the requesting
     client... */
  if(strstr(buffer, "swsclose") || !count) {
    persistant = FALSE;
    logmsg("connection close instruction \"swsclose\" found in response");
  }
  if(strstr(buffer, "swsbounce")) {
    prevbounce = TRUE;
    logmsg("enable \"swsbounce\" in the next request");
  }
  else
    prevbounce = FALSE;

  dump = fopen(RESPONSE_DUMP, "ab");
  if(!dump) {
    error = ERRNO;
    logmsg("fopen() failed with error: %d %s", error, strerror(error));
    logmsg("Error opening file: %s", RESPONSE_DUMP);
    logmsg("couldn't create logfile: " RESPONSE_DUMP);
    return -1;
  }

  responsesize = count;
  do {
    /* Ok, we send no more than 200 bytes at a time, just to make sure that
       larger chunks are split up so that the client will need to do multiple
       recv() calls to get it and thus we exercise that code better */
    size_t num = count;
    if(num > 200)
      num = 200;
    written = swrite(sock, buffer, num);
    if (written < 0) {
      sendfailure = TRUE;
      break;
    }
    else {
      logmsg("Sent off %zd bytes", written);
    }
    /* write to file as well */
    fwrite(buffer, 1, (size_t)written, dump);
    if(got_exit_signal)
      break;

    count -= written;
    buffer += written;
  } while(count>0);

  /* Send out any RTP data */
  if(req->rtp_buffer) {
    logmsg("About to write %zu RTP bytes", req->rtp_buffersize);
    count = req->rtp_buffersize;
    do {
      size_t num = count;
      if(num > 200)
        num = 200;
      written = swrite(sock, req->rtp_buffer + (req->rtp_buffersize - count), num);
      if(written < 0) {
        sendfailure = TRUE;
        break;
      }
      count -= written;
    } while(count > 0);

    free(req->rtp_buffer);
    req->rtp_buffersize = 0;
  }


  do {
    res = fclose(dump);
  } while(res && ((error = ERRNO) == EINTR));
  if(res)
    logmsg("Error closing file %s error: %d %s",
           RESPONSE_DUMP, error, strerror(error));

  if(got_exit_signal)
    return -1;

  if(sendfailure) {
    logmsg("Sending response failed. Only (%zu bytes) of (%zu bytes) were sent",
           responsesize-count, responsesize);
    if(ptr)
      free(ptr);
    if(cmd)
      free(cmd);
    return -1;
  }

  logmsg("Response sent (%zu bytes) and written to " RESPONSE_DUMP,
         responsesize);

  if(ptr)
    free(ptr);

  if(cmdsize > 0 ) {
    char command[32];
    int quarters;
    int num;
    ptr=cmd;
    do {
      if(2 == sscanf(ptr, "%31s %d", command, &num)) {
        if(!strcmp("wait", command)) {
          logmsg("Told to sleep for %d seconds", num);
          quarters = num * 4;
          while(quarters > 0) {
            quarters--;
            res = wait_ms(250);
            if(got_exit_signal)
              break;
            if(res) {
              /* should not happen */
              error = SOCKERRNO;
              logmsg("wait_ms() failed with error: (%d) %s",
                     error, strerror(error));
              break;
            }
          }
          if(!quarters)
            logmsg("Continuing after sleeping %d seconds", num);
        }
        else
          logmsg("Unknown command in reply command section");
      }
      ptr = strchr(ptr, '\n');
      if(ptr)
        ptr++;
      else
        ptr = NULL;
    } while(ptr && *ptr);
  }
  if(cmd)
    free(cmd);

  req->open = persistant;

  prevtestno = req->testno;
  prevpartno = req->partno;

  return 0;
}


int main(int argc, char *argv[])
{
  struct sockaddr_in me;
#ifdef ENABLE_IPV6
  struct sockaddr_in6 me6;
#endif /* ENABLE_IPV6 */
  curl_socket_t sock = CURL_SOCKET_BAD;
  curl_socket_t msgsock = CURL_SOCKET_BAD;
  int wrotepidfile = 0;
  int flag;
  unsigned short port = DEFAULT_PORT;
  char *pidname= (char *)".rtsp.pid";
  struct httprequest req;
  int rc;
  int error;
  int arg=1;
  long pid;

  while(argc>arg) {
    if(!strcmp("--version", argv[arg])) {
      printf("rtspd IPv4%s"
             "\n"
             ,
#ifdef ENABLE_IPV6
             "/IPv6"
#else
             ""
#endif
             );
      return 0;
    }
    else if(!strcmp("--pidfile", argv[arg])) {
      arg++;
      if(argc>arg)
        pidname = argv[arg++];
    }
    else if(!strcmp("--logfile", argv[arg])) {
      arg++;
      if(argc>arg)
        serverlogfile = argv[arg++];
    }
    else if(!strcmp("--ipv4", argv[arg])) {
#ifdef ENABLE_IPV6
      ipv_inuse = "IPv4";
      use_ipv6 = FALSE;
#endif
      arg++;
    }
    else if(!strcmp("--ipv6", argv[arg])) {
#ifdef ENABLE_IPV6
      ipv_inuse = "IPv6";
      use_ipv6 = TRUE;
#endif
      arg++;
    }
    else if(!strcmp("--port", argv[arg])) {
      arg++;
      if(argc>arg) {
        port = (unsigned short)atoi(argv[arg]);
        arg++;
      }
    }
    else if(!strcmp("--srcdir", argv[arg])) {
      arg++;
      if(argc>arg) {
        path = argv[arg];
        arg++;
      }
    }
    else {
      puts("Usage: rtspd [option]\n"
           " --version\n"
           " --logfile [file]\n"
           " --pidfile [file]\n"
           " --ipv4\n"
           " --ipv6\n"
           " --port [port]\n"
           " --srcdir [path]");
      return 0;
    }
  }

#ifdef WIN32
  win32_init();
  atexit(win32_cleanup);
#endif

  install_signal_handlers();

  pid = (long)getpid();

#ifdef ENABLE_IPV6
  if(!use_ipv6)
#endif
    sock = socket(AF_INET, SOCK_STREAM, 0);
#ifdef ENABLE_IPV6
  else
    sock = socket(AF_INET6, SOCK_STREAM, 0);
#endif

  if(CURL_SOCKET_BAD == sock) {
    error = SOCKERRNO;
    logmsg("Error creating socket: (%d) %s",
           error, strerror(error));
    goto server_cleanup;
  }

  flag = 1;
  if (0 != setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
            (void *)&flag, sizeof(flag))) {
    error = SOCKERRNO;
    logmsg("setsockopt(SO_REUSEADDR) failed with error: (%d) %s",
           error, strerror(error));
    goto server_cleanup;
  }

#ifdef ENABLE_IPV6
  if(!use_ipv6) {
#endif
    memset(&me, 0, sizeof(me));
    me.sin_family = AF_INET;
    me.sin_addr.s_addr = INADDR_ANY;
    me.sin_port = htons(port);
    rc = bind(sock, (struct sockaddr *) &me, sizeof(me));
#ifdef ENABLE_IPV6
  }
  else {
    memset(&me6, 0, sizeof(me6));
    me6.sin6_family = AF_INET6;
    me6.sin6_addr = in6addr_any;
    me6.sin6_port = htons(port);
    rc = bind(sock, (struct sockaddr *) &me6, sizeof(me6));
  }
#endif /* ENABLE_IPV6 */
  if(0 != rc) {
    error = SOCKERRNO;
    logmsg("Error binding socket on port %hu: (%d) %s",
           port, error, strerror(error));
    goto server_cleanup;
  }

  logmsg("Running %s version on port %d", ipv_inuse, (int)port);

  /* start accepting connections */
  rc = listen(sock, 5);
  if(0 != rc) {
    error = SOCKERRNO;
    logmsg("listen() failed with error: (%d) %s",
           error, strerror(error));
    goto server_cleanup;
  }

  /*
  ** As soon as this server writes its pid file the test harness will
  ** attempt to connect to this server and initiate its verification.
  */

  wrotepidfile = write_pidfile(pidname);
  if(!wrotepidfile)
    goto server_cleanup;

  for (;;) {
    msgsock = accept(sock, NULL, NULL);

    if(got_exit_signal)
      break;
    if (CURL_SOCKET_BAD == msgsock) {
      error = SOCKERRNO;
      logmsg("MAJOR ERROR: accept() failed with error: (%d) %s",
             error, strerror(error));
      break;
    }

    /*
    ** As soon as this server acepts a connection from the test harness it
    ** must set the server logs advisor read lock to indicate that server
    ** logs should not be read until this lock is removed by this server.
    */

    set_advisor_read_lock(SERVERLOGS_LOCK);
    serverlogslocked = 1;

    logmsg("====> Client connect");

#ifdef TCP_NODELAY
    /*
     * Disable the Nagle algorithm to make it easier to send out a large
     * response in many small segments to torture the clients more.
     */
    flag = 1;
    if (setsockopt(msgsock, IPPROTO_TCP, TCP_NODELAY,
                   (void *)&flag, sizeof(flag)) == -1) {
      logmsg("====> TCP_NODELAY failed");
    }
#endif

    /* initialization of httprequest struct is done in get_request(), but due
       to pipelining treatment the pipelining struct field must be initialized
       previously to FALSE every time a new connection arrives. */

    req.pipelining = FALSE;

    do {
      if(got_exit_signal)
        break;

      if(get_request(msgsock, &req))
        /* non-zero means error, break out of loop */
        break;

      if(prevbounce) {
        /* bounce treatment requested */
        if((req.testno == prevtestno) &&
           (req.partno == prevpartno)) {
          req.partno++;
          logmsg("BOUNCE part number to %ld", req.partno);
        }
        else {
          prevbounce = FALSE;
          prevtestno = -1;
          prevpartno = -1;
        }
      }

      send_doc(msgsock, &req);
      if(got_exit_signal)
        break;

      if((req.testno < 0) && (req.testno != DOCNUMBER_CONNECT)) {
        logmsg("special request received, no persistency");
        break;
      }
      if(!req.open) {
        logmsg("instructed to close connection after server-reply");
        break;
      }

      if(req.open)
        logmsg("=> persistant connection request ended, awaits new request");
      /* if we got a CONNECT, loop and get another request as well! */
    } while(req.open || (req.testno == DOCNUMBER_CONNECT));

    if(got_exit_signal)
      break;

    logmsg("====> Client disconnect");
    sclose(msgsock);
    msgsock = CURL_SOCKET_BAD;

    if(serverlogslocked) {
      serverlogslocked = 0;
      clear_advisor_read_lock(SERVERLOGS_LOCK);
    }

    if (req.testno == DOCNUMBER_QUIT)
      break;
  }

server_cleanup:

  if((msgsock != sock) && (msgsock != CURL_SOCKET_BAD))
    sclose(msgsock);

  if(sock != CURL_SOCKET_BAD)
    sclose(sock);

  if(got_exit_signal)
    logmsg("signalled to die");

  if(wrotepidfile)
    unlink(pidname);

  if(serverlogslocked) {
    serverlogslocked = 0;
    clear_advisor_read_lock(SERVERLOGS_LOCK);
  }

  restore_signal_handlers();

  if(got_exit_signal) {
    logmsg("========> %s rtspd (port: %d pid: %ld) exits with signal (%d)",
           ipv_inuse, (int)port, pid, exit_signal);
    /*
     * To properly set the return status of the process we
     * must raise the same signal SIGINT or SIGTERM that we
     * caught and let the old handler take care of it.
     */
    raise(exit_signal);
  }

  logmsg("========> rtspd quits");
  return 0;
}