forked from QW-Group/ezquake-source
-
Notifications
You must be signed in to change notification settings - Fork 0
/
EX_browser_ping.c
1156 lines (921 loc) · 28.8 KB
/
EX_browser_ping.c
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
/*
Copyright (C) 2007 ezQuake team
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.
$Id: EX_browser_ping.c,v 1.40 2007-10-27 08:51:12 dkure Exp $
*/
#ifdef _WIN32
#include <winsock2.h>
#include "quakedef.h"
#include "winquake.h"
#else
#include "quakedef.h"
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/uio.h>
#include <arpa/inet.h>
#include <errno.h>
#include <unistd.h>
#include <semaphore.h>
#define SO_DONTLINGER 0
#define GetCurrentProcessId getpid
#define ioctlsocket ioctl
#endif // _WIN32
#include "hud.h"
#include "hud_common.h"
#include "EX_browser.h"
// =============================================================================
// Constants
// =============================================================================
#define ICMP_ECHO 8
#define ICMP_ECHOREPLY 0
#define ICMP_MIN 8 // minimum 8 byte icmp packet (just header)
#define STATUS_FAILED 0xFFFF
#define DEF_PACKET_SIZE 0
#define MAX_PACKET 1024
#define PING_PACKET_DATA "\xff\xff\xff\xffk\n"
// =============================================================================
// Local Types
// =============================================================================
/* The IP header */
typedef struct IP_header_s
{
unsigned int h_len:4; // length of the header
unsigned int version:4; // Version of IP
unsigned char tos; // Type of service
unsigned short total_len; // total length of the packet
unsigned short ident; // unique identifier
unsigned short frag_and_flags; // flags
unsigned char ttl;
unsigned char proto; // protocol (TCP, UDP etc)
unsigned short checksum; // IP checksum
unsigned int sourceIP;
unsigned int destIP;
} IP_header_t;
typedef struct ICMP_header_s
{
byte i_type;
byte i_code; /* type sub code */
unsigned short i_cksum;
unsigned short i_id;
unsigned short i_seq;
/* This is not the std header, but we reserve space for our needs */
double timestamp;
u_int id; // ip
int index; // server num
int phase; // ping phase
int randomizer;
} ICMP_header_t;
/* Packets */
typedef union IP_Packet_u {
IP_header_t hdr;
byte data[MAX_PACKET];
} IP_packet_t;
typedef union ICMP_Packet_u {
ICMP_header_t hdr;
byte data[MAX_PACKET];
} ICMP_packet_t;
/* Struct for storing ping reponses */
typedef struct pinghost_s
{
int ip;
unsigned short port;
int recv, send;
int phase;
double ping;
double stime[6];
} pinghost_t;
typedef struct {
pinghost_t *hosts;
int nelms;
} pinghost_list_t;
// =============================================================================
// Function Prototypes
// =============================================================================
// =============================================================================
// Global variables
// =============================================================================
qbool useNewPing = false; // New Ping = UDP QW Packet multithreaded ping
socket_t sock;
socket_t ping_sock;
/* Used for thread syncronisation */
static qbool ping_finished = false;
static sem_t ping_semaphore;
// =============================================================================
// Local Functions
// =============================================================================
/**
* Given a string of the form "ip:port", gets the addr, port in integer format
*/
static int ParseServerIp(char *server_port, int *addr, unsigned short *port)
{
char server_ip[50];
char *port_divide;
strlcpy (server_ip, server_port, sizeof(server_ip));
/* Break the ip at the port */
if ((port_divide = strchr(server_ip, ':')))
*port_divide = 0;
if (addr) {
*addr = inet_addr(server_ip);
if (*addr == INADDR_NONE)
return 1;
}
if (port)
{
if (port_divide != NULL)
*port = (unsigned short) Q_atoi(port_divide+1);
else
*port = 27500;
}
return 0;
}
/**
* Given a servs list, parse and create a pinghost_t list from it
*/
static pinghost_t *ParseServerList(server_data *servs[], int servsn, int *host_nelms)
{
pinghost_t *phosts;
int nelms;
int i, j;
phosts = (pinghost_t *)Q_malloc(sizeof(pinghost_t) * servsn);
nelms = 0;
for (i=0; i < servsn; i++)
{
int addr;
unsigned short port;
if (ParseServerIp(servs[i]->display.ip, &addr, &port))
{
continue;
}
/* Make sure it is unique */
for (j = 0; j < nelms; j++)
{
if (phosts[j].ip == addr && phosts[j].port == port)
{
break;
}
}
if (j == nelms)
{
phosts[nelms].recv = 0;
phosts[nelms].send = 0;
phosts[nelms].ping = 0;
phosts[nelms].ip = addr;
phosts[nelms].port = port;
nelms++;
}
}
*host_nelms = nelms;
return phosts;
}
/**
* Given a ping host array takes the average ping and fills the display for
* the servs array
*/
static void FillServerListPings(server_data *servs[], int servsn,
pinghost_t *phosts, int host_nelms) {
int i, j;
for (i = 0; i < host_nelms; i++) {
int ping;
int addr;
unsigned short port;
/* Take the average of the recieved pings */
if (phosts[i].recv > 0)
ping = (int)((phosts[i].ping / phosts[i].recv) * 1000);
else
ping = -1;
/* Find the server from the host */
for (j = 0; j < servsn; j++)
{
if (ParseServerIp(servs[j]->display.ip, &addr, &port))
{
continue;
}
if (addr == phosts[i].ip && port == phosts[i].port)
{
SetPing(servs[j], ping); // 10
}
}
}
}
/**
* Decode an IP packet and return the underlying ICMP header
*/
static ICMP_header_t *IP_DecodePacket(IP_packet_t *ip_packet, int bytes,
struct sockaddr_in *from, u_int ip)
{
ICMP_packet_t *icmp_packet;
unsigned short iphdrlen;
iphdrlen = ip_packet->hdr.h_len * 4 ; // number of 32-bit words *4 = bytes
if (bytes < iphdrlen + ICMP_MIN)
{
return NULL;
}
icmp_packet = (ICMP_packet_t *)(ip_packet->data + iphdrlen);
if (icmp_packet->hdr.i_type != ICMP_ECHOREPLY)
{
return NULL;
}
if (icmp_packet->hdr.i_id != (unsigned short)GetCurrentProcessId())
{
return NULL;
}
return &icmp_packet->hdr;
}
/**
* Decode an ICMP packet and calculate the total return trip time (RTT) is ms
*/
static int ICMP_GetEchoResponseTime(ICMP_header_t *icmp_hdr)
{
return 1 + (int)((Sys_DoubleTime() - icmp_hdr->timestamp)*1000);
}
/**
* Calculate the ICMP checksum which includes the header and data
*/
static unsigned short ICMP_Checksum(ICMP_packet_t *packet, int size)
{
unsigned int cksum=0;
unsigned short *buffer = (unsigned short *)packet->data;
while(size >1)
{
cksum+=*buffer++;
size -=sizeof(unsigned short);
}
if (size)
{
cksum += *(byte *)buffer;
}
cksum = (cksum >> 16) + (cksum & 0xffff);
cksum += (cksum >>16);
return (unsigned short)(~cksum);
}
/**
* Helper function to fill in various stuff in our ICMP request.
*/
static void ICMP_FillData(ICMP_packet_t *packet, int datasize)
{
packet->hdr.i_type = ICMP_ECHO;
packet->hdr.i_code = 0;
packet->hdr.i_id = (unsigned short)GetCurrentProcessId();
packet->hdr.i_cksum = 0;
packet->hdr.i_seq = 0;
//
// Place some junk in the buffer.
//
memset(packet->data + sizeof(packet->hdr), 'E', datasize);
}
// =============================================================================
// Global Functions
// =============================================================================
void SB_RootInit(void)
{
u_int arg;
if ((sock = socket (AF_INET, SOCK_RAW, IPPROTO_ICMP)) == INVALID_SOCKET) {
/* disconnect: SOCK_RAW is only avail for root on linux
* and for administrator users on winxp.
* for case of vista it seems raw sockets are forbidden even for administratos
* BTW, NewPing (aka no SOCK_RAW ping) is unstable on linux and very inaccurate :E
*/
Com_DPrintf ("SB_RootInit: socket: (%i): %s\n", qerrno, strerror(qerrno));
}
#ifdef _WIN32
if (sock == INVALID_SOCKET || COM_CheckParm("-nosockraw") || sb_nosockraw.integer || WinVISTA || Win7) {
#else
if (sock < 0 || COM_CheckParm("-nosockraw") || sb_nosockraw.integer) {
#endif
useNewPing = true;
return;
}
#ifndef _WIN32
if ((fcntl (sock, F_SETFL, O_NONBLOCK)) == -1) { // O'Rly?! @@@
Com_Printf ("SB_RootInit: fcntl: (%i): %s\n", qerrno, strerror(qerrno));
closesocket(sock);
}
#endif
arg = 1;
if (ioctlsocket (sock, FIONBIO, (u_long *)&arg) == -1) { // make asynchronous
Com_Printf ("SB_RootInit: ioctl: (%i): %s\n", qerrno, strerror(qerrno));
//closesocket(newsocket);
}
arg = 1;
if (setsockopt (sock, SOL_SOCKET, SO_DONTLINGER, (char*)&arg, sizeof(int)) == -1) {
// disconnect: always error 10042 @ WinXP inside VMware
Com_DPrintf ("SB_RootInit: setsockopt: (%i): %s\n", qerrno, strerror(qerrno));
}
/*
SO_DONTLINGER - razreshaet zakritie bez ojidaniya pri nalichii ne otoslanoi informacii
*/
}
/**
* Pings a single host up to count attempts, each attemp we send the request
* and wait for the reply. The total return trip time (RTT) in ms is returned.
*/
int oldPingHost(char *host_to_ping, int count)
{
struct sockaddr_in dest, from;
int fromlen = sizeof(from);
int bread, datasize;
ICMP_packet_t icmp_packet;
IP_packet_t ip_recv_packet;
ICMP_header_t *icmp_recv_header;
int attempts, rtt;
struct timeval timeout;
fd_set fd_set_struct;
unsigned int addr=0;
unsigned short seq_no = 0;
if (sock < 0)
return 0;
addr = inet_addr(host_to_ping);
if (addr == INADDR_NONE)
return 0;
memset(&dest, 0, sizeof(dest));
dest.sin_addr.s_addr = addr;
dest.sin_family = AF_INET;
memset(icmp_packet.data, 0, sizeof(icmp_packet.data));
datasize = DEF_PACKET_SIZE;
datasize += sizeof(icmp_packet.hdr);
ICMP_FillData(&icmp_packet, datasize);
attempts = 0;
rtt = 0;
while (attempts < count)
{
int bwrote;
int ret;
attempts++;
/* Prepare the packet */
icmp_packet.hdr.i_cksum = 0;
icmp_packet.hdr.timestamp = Sys_DoubleTime();
icmp_packet.hdr.id = addr;
icmp_packet.hdr.i_seq = seq_no++;
icmp_packet.hdr.i_cksum = ICMP_Checksum(&icmp_packet, datasize);
/* Prepare for response */
FD_ZERO(&fd_set_struct);
FD_SET(sock, &fd_set_struct);
timeout.tv_sec = 0;
timeout.tv_usec = sb_pingtimeout.value * 1000;
ret = select(sock+1, NULL, (fd_set *) &fd_set_struct, NULL, &timeout);
if (ret <= 0)
continue;
/* Send ping request */
bwrote = sendto(sock, (char *) icmp_packet.data,datasize,0,
(struct sockaddr*)&dest, sizeof(dest));
if (bwrote <= 0 || bwrote < datasize)
continue;
/* Wait for response */
FD_ZERO(&fd_set_struct);
FD_SET(sock, &fd_set_struct);
ret = select(sock+1, (fd_set *) &fd_set_struct, NULL, NULL, &timeout);
if (ret <= 0)
continue;
bread = recvfrom(sock, (char *) ip_recv_packet.data, MAX_PACKET, 0,
(struct sockaddr*)&from, (socklen_t *)&fromlen);
if (bread <= 0)
continue;
/* Look for the RTT */
icmp_recv_header = IP_DecodePacket(&ip_recv_packet, bread, &from, addr);
if (icmp_recv_header) {
if (!(rtt = ICMP_GetEchoResponseTime(icmp_recv_header))) {
continue;
}
}
break;
}
return rtt;
}
/**
* Ping multiple hosts listed by servs, ping each host count times
*/
int oldPingHosts(server_data *servs[], int servsn, int count)
{
double interval;
double lastsenttime;
int ping_number;
int randomizer;
pinghost_list_t host_list;
struct sockaddr_in dest,from;
int bread,datasize;
int fromlen = sizeof(from);
char *dest_ip;
ICMP_packet_t icmp_packet;
IP_packet_t ip_packet;
int success;
struct timeval timeout;
fd_set fd_set_struct;
unsigned int addr=0;
unsigned short seq_no = 0;
if (sock < 0)
return 0;
datasize = DEF_PACKET_SIZE;
datasize += sizeof(icmp_packet.hdr);
// FIXME: The datasize only sizeof(IcmpHeader) here so fill_icmp_data won't set any of the data "to junk", it will all be 0.
memset(icmp_packet.data, 0, MAX_PACKET);
ICMP_FillData(&icmp_packet, datasize);
success = 0;
host_list.hosts = ParseServerList(servs, servsn, &host_list.nelms);
interval = (1000.0 / sb_pingspersec.value) / 1000;
lastsenttime = Sys_DoubleTime() - interval;
timeout.tv_sec = 0;
timeout.tv_usec = (long)(interval * 1000.0 * 1000.0);
ping_number = 0;
randomizer = (int)(Sys_DoubleTime() * 10);
// Ping all adresses in the host list we just created.
while (!abort_ping)
{
int bwrote;
double time = Sys_DoubleTime();
if (time > (lastsenttime + 1.2 * (sb_pingtimeout.value / 1000)))
{
// No answers, no pings - finish.
break;
}
// Send a ping request to the current host.
if ((time > (lastsenttime + interval))
&& (ping_number < (host_list.nelms * sb_pings.value)))
{
// Send next ping.
pinghost_t * host = &host_list.hosts[ping_number % host_list.nelms];
if (host->ping >= 0)
{
icmp_packet.hdr.i_cksum = 0;
icmp_packet.hdr.timestamp = time;
icmp_packet.hdr.id = host->ip;
icmp_packet.hdr.index = ping_number % host_list.nelms;
icmp_packet.hdr.phase = ping_number;
icmp_packet.hdr.randomizer = randomizer;
icmp_packet.hdr.i_seq = seq_no++;
icmp_packet.hdr.i_cksum = ICMP_Checksum(&icmp_packet, datasize);
memset(&dest, 0, sizeof(dest));
dest.sin_addr.s_addr = host->ip;
dest.sin_family = AF_INET;
dest_ip = inet_ntoa(dest.sin_addr);
bwrote = sendto(sock, (char *) icmp_packet.data, datasize, 0,
(struct sockaddr*)&dest, sizeof(dest));
if (bwrote <= 0 || bwrote < datasize)
host->ping = -1;
lastsenttime = time;
}
ping_number++;
ping_pos = min(1, ping_number
/ (double)(host_list.nelms * sb_pings.value));
}
// Wait for an answer.
while (!abort_ping)
{
int myvar;
ICMP_header_t *icmp_answer;
FD_ZERO(&fd_set_struct);
FD_SET(sock, &fd_set_struct);
myvar = select(sock+1, (fd_set *) &fd_set_struct, NULL,
NULL, &timeout);
if (myvar <= 0)
break;
// there's an answer - get it!
bread = recvfrom(sock, (char *) ip_packet.data, sizeof(ip_packet.data), 0,
(struct sockaddr *)&from, (socklen_t *)&fromlen);
if (bread <= 0)
continue;
icmp_answer = IP_DecodePacket(&ip_packet, bread, &from, addr);
// Make sure the reply is ok.
if (icmp_answer && (randomizer == icmp_answer->randomizer))
{
int index, phase;
int fromhost;
fromhost = icmp_answer->id;
index = icmp_answer->index;
phase = icmp_answer->phase;
if ((host_list.hosts[index].ip == fromhost)
&& (host_list.hosts[index].ping >= 0))
{
host_list.hosts[index].ping
= (host_list.hosts[index].ping
* host_list.hosts[index].phase
+ (Sys_DoubleTime()-icmp_answer->timestamp))
/ (host_list.hosts[index].phase + 1);
host_list.hosts[index].phase++;
// Remove averaging that would occur in FillServerListPings
host_list.hosts[index].recv = 1;
}
}
}
}
// update pings in our servz
if (!abort_ping) {
FillServerListPings(servs, servsn, host_list.hosts, host_list.nelms);
}
Q_free(host_list.hosts);
return success;
}
/**
* Pings multiple hosts in parrallel, each host is pingged count times
*/
void PingSendParrallelMultiHosts(pinghost_t *phosts, int nelms, int count) {
struct sockaddr_in to;
int interval;
int i, j;
int ret;
timerresolution_session_t timer_session;
memset(&timer_session, 0, sizeof(timer_session));
count = bound(1, count, 6);
interval = 1000.0 / sb_pingspersec.integer;
Sys_TimerResolution_InitSession(&timer_session);
Sys_TimerResolution_RequestMinimum(&timer_session);
for (i = 0; i < count && !abort_ping; i++) {
for (j = 0; j < nelms && !abort_ping; j++) {
char *packet = PING_PACKET_DATA;
ping_pos = min(1, (j / (double)(nelms * count))) + (i / (double)count);
to.sin_family = AF_INET;
to.sin_port = htons(phosts[j].port);
to.sin_addr.s_addr = phosts[j].ip;
ret = sendto(ping_sock, packet, strlen(packet), 0, (struct sockaddr *)&to, sizeof(struct sockaddr));
if (ret == -1) {
continue;
}
phosts[j].stime[phosts[j].send] = Sys_DoubleTime();
phosts[j].send++;
Sys_MSleep(interval);
}
}
Sys_TimerResolution_Clear(&timer_session);
}
/**
* Thread entry point for parrallel recving of ping responses
*/
#ifdef _WIN32
DWORD WINAPI PingRecvProc(void *lpParameter)
#else
unsigned int PingRecvProc(void *lpParameter)
#endif
{
socklen_t inaddrlen;
struct sockaddr_in from;
fd_set fd;
int k, ret;
struct timeval timeout;
pinghost_list_t *host_list = (pinghost_list_t *)lpParameter;
while (!ping_finished && !abort_ping) {
FD_ZERO(&fd);
FD_SET(ping_sock, &fd);
timeout.tv_sec = 0;
timeout.tv_usec = 100 * 1000;
ret = select(ping_sock+1, &fd, NULL, NULL, &timeout);
if (ret <= 0) // error or timeout
continue;
while (1) {
char buf[16];
inaddrlen = sizeof(struct sockaddr_in);
ret = recvfrom(ping_sock, buf, sizeof(buf), 0, (struct sockaddr *)&from, &inaddrlen);
if (ret <= 0) // socket is asynch, so most likely this means there is no data to read
break;
if (buf[0] != 'l') // not A2A_ACK
continue;
for (k = 0; k < host_list->nelms; k++) {
if (host_list->hosts[k].ip == (int) from.sin_addr.s_addr &&
host_list->hosts[k].port == ntohs(from.sin_port)) {
host_list->hosts[k].ping += Sys_DoubleTime()
- host_list->hosts[k]
.stime[host_list->hosts[k].recv];
host_list->hosts[k].recv++;
break;
}
}
}
}
Sys_SemPost(&ping_semaphore);
return 0;
}
/**
* Ping a single host count times, returns the average of the responses
*/
int PingHost(char *host_to_ping, unsigned short port, int count, int time_out)
{
socket_t sock;
int i, ret, pings;
struct sockaddr_in addr_to, addr_from;
struct timeval timeout;
fd_set fd;
char *packet = "\xff\xff\xff\xffk\n", buf[16]; // A2A_PING, should return A2A_ACK
socklen_t inaddrlen;
double ping, t1;
addr_to.sin_addr.s_addr = inet_addr(host_to_ping);
if (addr_to.sin_addr.s_addr == INADDR_NONE)
return 0;
addr_to.sin_family = AF_INET;
addr_to.sin_port = htons(port);
sock = UDP_OpenSocket(PORT_ANY);
pings = ping = 0;
for (i = 0; i < count; i++) {
ret = sendto(sock, packet, strlen(packet), 0, (struct sockaddr *)&addr_to, sizeof(struct sockaddr));
if (ret == -1) // failure, try again
continue;
t1 = Sys_DoubleTime();
_select:
FD_ZERO(&fd);
FD_SET(sock, &fd);
timeout.tv_sec = 0;
timeout.tv_usec = 1000 * time_out;
ret = select(sock+1, &fd, NULL, NULL, &timeout);
if (ret <= 0) // timed out or error
continue;
inaddrlen = sizeof(struct sockaddr_in);
ret = recvfrom(sock, buf, sizeof(buf), 0, (struct sockaddr *)&addr_from, &inaddrlen);
if (ret == -1) // failure, try again
continue;
if (addr_from.sin_addr.s_addr != addr_to.sin_addr.s_addr) // martian, discard and see if a valid response came in after it
goto _select;
if (buf[0] != 'l') // not A2A_ACK, discard and see if a valid response came in after it
goto _select;
ping += Sys_DoubleTime() - t1;
pings++;
}
closesocket(sock);
return pings ? (int)((ping * 1000) / pings) : 0;
}
/**
* Send several ping requests at once, start another thread to recieve
* the responses.
*/
int PingHosts(server_data *servs[], int servsn, int count)
{
u_int arg;
pinghost_list_t host_list;
host_list.hosts = ParseServerList(servs, servsn, &host_list.nelms);
ping_finished = false;
ping_sock = UDP_OpenSocket(PORT_ANY);
#ifndef _WIN32
if ((fcntl (ping_sock, F_SETFL, O_NONBLOCK)) == -1) { // O'Rly?! @@@
Com_Printf ("TCP_OpenStream: fcntl: (%i): %s\n", qerrno, strerror(qerrno));
//closesocket(ping_sock);
}
#endif
arg = 1;
if (ioctlsocket (ping_sock, FIONBIO, (u_long *)&arg) == -1) { // make asynchronous
Com_Printf ("PingHosts: ioctl: (%i): %s\n", qerrno, strerror(qerrno));
//closesocket(newsocket);
}
Sys_SemInit(&ping_semaphore, 0, 1);
Sys_CreateThread(PingRecvProc, (void *)&host_list);
PingSendParrallelMultiHosts(host_list.hosts, host_list.nelms, count);
Sys_MSleep(500); // Wait for slow pings
ping_finished = true; // let thread know we are done
Sys_SemWait(&ping_semaphore);
Sys_SemDestroy(&ping_semaphore);
closesocket(ping_sock);
if (!abort_ping) {
FillServerListPings(servs, servsn, host_list.hosts, host_list.nelms);
}
Q_free(host_list.hosts);
return 1;
}
//
// ----------------------------------------------
// connection test
// netgraph + ping stats
//
//
int sb_test_starttime;
int sb_test_incoming_sequence, sb_test_outgoing_sequence;
int sb_test_packet_latency[NET_TIMINGS];
double sent_time[NET_TIMINGS];
double received_time[NET_TIMINGS];
int sequence_latency[NET_TIMINGS];
unsigned int sb_test_addr;
int sb_test_pl;
int sb_test_min, sb_test_max, sb_test_avg, sb_test_dev;
double last_stats_time;
server_data *sb_test_server = NULL;
void SB_Test_GetPackets(void)
{
struct sockaddr_in dest,from;
int bread;
int fromlen = sizeof(from);
char *dest_ip;
IP_packet_t ip_packet;
// int bwrote;
// u_long arg;
// int arg2, success;
// struct timeval timeout;
// fd_set fd_set_struct;
unsigned int addr=0;
// unsigned short seq_no = 0;
if (sock < 0)
return;
memset(&dest, 0, sizeof(dest));
addr = sb_test_addr;
if (addr == INADDR_NONE)
return;
dest.sin_addr.s_addr = addr;
dest.sin_family = AF_INET;
dest_ip = inet_ntoa(dest.sin_addr);
while (1)
{
// int success;
ICMP_header_t *icmp_answer;
int seq;
bread = recvfrom(sock, (char *) ip_packet.data, sizeof(ip_packet.data), 0,
(struct sockaddr*)&from, (socklen_t *) &fromlen);
if (bread <= 0)
break;
icmp_answer = IP_DecodePacket(&ip_packet, bread, &from, addr);
if (!icmp_answer || icmp_answer->phase != sb_test_starttime)
continue;
seq = icmp_answer->i_seq;
if (seq > sb_test_incoming_sequence)
{
received_time[seq%NET_TIMINGS] = cls.realtime;
sequence_latency[seq%NET_TIMINGS] = sb_test_outgoing_sequence - seq;
sb_test_incoming_sequence = seq;
}
}
}
void SB_Test_SendPacket(void)
{
struct sockaddr_in dest/*,from*/;
// int bread,
int datasize;
// int fromlen = sizeof(from);
char *dest_ip;
ICMP_packet_t icmp_packet;
int bwrote;
// int ret;
//u_long arg;
//int arg2, success;
//struct timeval timeout;
//fd_set fd_set_struct;
unsigned int addr=0;
// unsigned short seq_no = 0;
sent_time[sb_test_outgoing_sequence%NET_TIMINGS] = cls.realtime;
received_time[sb_test_outgoing_sequence%NET_TIMINGS] = -1; // no answer yet
if (sock < 0)
return ;
memset(&dest, 0, sizeof(dest));
addr = sb_test_addr;
if (addr == INADDR_NONE)
return;
dest.sin_addr.s_addr = addr;
dest.sin_family = AF_INET;
dest_ip = inet_ntoa(dest.sin_addr);
datasize = DEF_PACKET_SIZE;
datasize += sizeof(icmp_packet.hdr);
memset(icmp_packet.data, 0, MAX_PACKET);
ICMP_FillData(&icmp_packet, datasize);
icmp_packet.hdr.phase = sb_test_starttime;
icmp_packet.hdr.i_cksum = 0;
icmp_packet.hdr.timestamp = cls.realtime;
icmp_packet.hdr.id = addr;
icmp_packet.hdr.i_seq = sb_test_outgoing_sequence++;
icmp_packet.hdr.i_cksum = ICMP_Checksum(&icmp_packet, datasize);
bwrote = sendto(sock, (char *) icmp_packet.data,datasize,0,(struct sockaddr*)&dest,
sizeof(dest));
}
void SB_Test_CalcNet(void)
{
int i, a;
extern hud_t * hud_netgraph;
cvar_t *netgraph_inframes = HUD_FindVar(hud_netgraph, "inframes");
for (i=0; i < NET_TIMINGS; i++)
{
if (received_time[i] == -1)
sb_test_packet_latency[i] = 9999; // dropped
else
{
double l;
if (netgraph_inframes->value) // [frames]
l = 2*(sequence_latency[i]);
else // [miliseconds]
l = min((received_time[i] - sent_time[i])*1000, 1000);
sb_test_packet_latency[i] = (int)l;
}