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/*
* Copyright (C) 2005, 2006 Stig Venaas <venaas@uninett.no>
* $Id:$
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*/
#include "ssmping.h"
extern int optind;
extern char *optarg;
int main(int argc, char **argv) {
int famarg, family, ver, s, ndesc, cnt, count, countarg;
char *addr1, *addr2, *srv, recvbuf[65535];
uint16_t runtime, rate;
uint32_t intface;
int32_t hops;
struct sockaddr_storage ucaddr, mcaddr;
size_t namelen, recvbuflen;
uint32_t firstbytes, bytes;
struct timeval now, rcvtime, firsttime, endtime, jointime, tstamp, diff;
fd_set readfds;
struct sockaddr_storage from;
socklen_t fromlen = sizeof(from);
double msecs;
gettime(&endtime);
#ifdef WIN32
WORD wVersionRequested;
WSADATA wsaData;
wVersionRequested = MAKEWORD( 2, 0 );
WSAStartup(wVersionRequested, &wsaData);
/* lots of complicated Win32 error checking expected - sigh - */
#endif
parseargs(argc, argv, FIRSTMODE, &famarg, &ver, NULL, &intface, &countarg, &addr1, &addr2, &runtime, &rate, &srv);
if (runtime)
endtime.tv_sec += runtime;
family = famarg;
/* addr2 next addr1 in order to request mc if only one arg */
if (names2addrsocks(&s, NULL, addr2, addr1, srv, &family, &ucaddr, &mcaddr)) {
if (addr2)
errx("Failed to create socket for %s %s", addr1, addr2);
else
errx("Failed to create socket for %s", addr1);
}
prep_sock(family, s);
setvbuf(stdout, NULL, _IONBF, 0);
namelen = (mcaddr.ss_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6));
#ifdef WIN32
{
struct sockaddr_storage any = mcaddr;
setaddr(&any, NULL, "::", "0.0.0.0");
if (bind(s, (struct sockaddr *)&any, namelen) < 0)
errx("bind [INADDR_ANY]");
}
#else
if (bind(s, (struct sockaddr *)&mcaddr, namelen) < 0)
errx("bind [multicast]");
#endif
/* using name to specify interface is wrong, only problem for old API */
recvbuflen = sizeof(recvbuf);
if (addr2) {
joinchannel(s, (struct sockaddr *)&ucaddr, (struct sockaddr *)&mcaddr, intface, NULL);
printf("mcfirst joined (S,G) = (%s,%s)\n",
addr2string((struct sockaddr *)&ucaddr, namelen),
addr2string((struct sockaddr *)&mcaddr, namelen));
} else {
joingroup(s, (struct sockaddr *)&mcaddr, intface, NULL);
printf("mcfirst joined (*,G) = (*,%s)\n", addr2string((struct sockaddr *)&mcaddr, namelen));
}
gettime(&jointime);
if (!runtime && !countarg)
countarg = 1;
bytes = 0;
for (count = 0; !countarg || count < countarg; count++) {
for(;;) {
FD_ZERO(&readfds);
FD_SET(s, &readfds);
gettime(&now);
timediff(&diff, &now, &endtime);
ndesc = select(s + 1, &readfds, (fd_set *)0, (fd_set *)0, runtime ? &diff : NULL);
gettime(&now);
if (runtime && (timecmp(&endtime, &now) <= 0))
goto done;
if (ndesc < 1)
continue;
cnt = recvfromhopstime(s, (void *)&recvbuf, recvbuflen, 0, (struct sockaddr *)&from,
&fromlen, &hops, &tstamp, NULL);
if (cnt == -1) {
err("recv failed");
continue;
}
break;
}
rcvtime = tstamp.tv_sec ? tstamp : now;
if (!count) {
firsttime = rcvtime;
firstbytes = cnt;
}
bytes += cnt;
if (!rate) {
fromlen = from.ss_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6);
timediff(&diff, &jointime, &rcvtime);
printf("Received %d bytes from %s after %ld.%03ld ms (ttl/hops %d)\n", cnt,
addr2string((struct sockaddr *) &from, fromlen),
diff.tv_sec * 1000 + diff.tv_usec / 1000, diff.tv_usec % 1000,
hops);
}
}
done:
timediff(&diff, &jointime, &rcvtime);
printf("%d bytes (payload) and %d packets received in %ld.%03ld seconds\n", bytes, count, diff.tv_sec, (diff.tv_usec + 500) / 1000);
if (count < 2)
return !count;
timediff(&diff, &firsttime, &rcvtime);
msecs = (double)diff.tv_sec * 1000 + (double)diff.tv_usec / 1000;
if (!msecs)
return !count;
bytes -= firstbytes;
printf("Average rate: %.3f kbits of payload per second\n",
(double)bytes / msecs * 8);
/* estimate bytes including minimum packet headers */
bytes += (count - 1) * (mcaddr.ss_family == AF_INET ? 28 : 48);
printf("Estimated average rate including all headers: %.3f kbits per second\n",
(double)bytes / msecs * 8);
return !count;
}