Tools for multicast testing (msend and mreceive)
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/*
* T T C P . C
*
* Test TCP connection. Makes a connection on port 5001
* and transfers fabricated buffers or data copied from stdin.
*
* Usable on 4.2, 4.3, and 4.1a systems by defining one of
* BSD42 BSD43 (BSD41a)
* Machines using System V with BSD sockets should define SYSV.
*
* Modified for operation under 4.2BSD, 18 Dec 84
* T.C. Slattery, USNA
* Minor improvements, Mike Muuss and Terry Slattery, 16-Oct-85.
* Modified in 1989 at Silicon Graphics, Inc.
* catch SIGPIPE to be able to print stats when receiver has died
* for tcp, don't look for sentinel during reads to allow small transfers
* increased default buffer size to 8K, nbuf to 2K to transfer 16MB
* moved default port to 5001, beyond IPPORT_USERRESERVED
* make sinkmode default because it is more popular,
* -s now means don't sink/source
* count number of read/write system calls to see effects of
* blocking from full socket buffers
* for tcp, -D option turns off buffered writes (sets TCP_NODELAY sockopt)
* buffer alignment options, -A and -O
* print stats in a format that's a bit easier to use with grep & awk
* for SYSV, mimic BSD routines to use most of the existing timing code
*
* Distribution Status -
* Public Domain. Distribution Unlimited.
*/
/* Modified by Yvan Pointurier (yp9x), University of Virginia - May 2002 */
/* Modified by Joachim Nilsson (troglobit), GitHub - Jul 2015 */
#define BSD43
/* #define BSD42 */
/* #define BSD41a */
#if defined(sgi)
#define SYSV
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <ctype.h>
#include <errno.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <netdb.h>
#include <sys/time.h> /* struct timeval */
#if defined(SYSV)
#include <sys/times.h>
#include <sys/param.h>
struct rusage {
struct timeval ru_utime, ru_stime;
};
#define RUSAGE_SELF 0
#else
#include <sys/resource.h>
#endif
struct sockaddr_in sinme;
struct sockaddr_in sinhim;
struct sockaddr_in frominet;
socklen_t fromlen;
int domain;
int fd; /* fd of network socket */
size_t buflen = 8 * 1024; /* length of buffer */
char *buf; /* ptr to dynamic buffer */
int nbuf = 8 * 1024; /* number of buffers to send in sinkmode */
int bufoffset = 0; /* align buffer to this */
int bufalign = 16 * 1024; /* modulo this */
int udp = 0; /* 0 = tcp, !0 = udp */
int ttl = 100; /* for multicast only */
int options = 0; /* socket options */
int one = 1; /* for 4.3 BSD style setsockopt() */
short port = 5001; /* TCP port number */
char *host; /* ptr to name of host */
int trans; /* 0=receive, !0=transmit mode */
int sinkmode = 1; /* 0=normal I/O, !0=sink/source mode */
int verbose = 0; /* 0=print basic info, 1=print cpu rate, proc
* resource usage. */
int nodelay = 0; /* set TCP_NODELAY socket option */
int b_flag = 0; /* use mread() */
int mcast = 0; /* 1 = multicast reception, 0 = unicast */
char *mgroup; /* multicast group address */
/*#define MAXPAK 32768 *//* max # of packets received */
/*int rcvBytesArray[MAXPAK]; */
/*double rcvTimeArray[MAXPAK]; */
int rcvIndex = 0; /* index in the arrays */
long rate = 0; /* sending rate */
struct hostent *addr;
extern int errno;
char Usage[] = "\
Usage: ttcp -t [-options] host [ < in ]\n\
ttcp -r [-options > out]\n\
Common options:\n\
-l## length of bufs read from or written to network (default 8192)\n\
-u use UDP instead of TCP\n\
-p## port number to send to or listen at (default 5001)\n\
-s -t: don't source a pattern to network, get data from stdin\n\
-r: don't sink (discard), print data on stdout\n\
-A align the start of buffers to this modulus (default 16384)\n\
-O start buffers at this offset from the modulus (default 0)\n\
-v verbose: print more statistics\n\
-d set SO_DEBUG socket option\n\
Options specific to -t:\n\
-n## number of source bufs written to network (default 8192)\n\
-D don't buffer TCP writes (sets TCP_NODELAY socket option)\n\
-iTTL sets the ttl of the packets (multicast packets)\n\
-R## slows down sending rate (higher values mean slower rates\n\
Options specific to -r:\n\
-B for -s, only output full blocks as specified by -l (for TAR)\n\
-m IP bind to a multicast group designated by its IP address\n\
";
char stats[128];
size_t nbytes; /* bytes on net */
size_t numCalls; /* # of I/O system calls */
void prep_timer();
double read_timer();
double cput, realt; /* user, real time (seconds) */
static void sigpipe()
{
}
static void err(char *s)
{
fprintf(stderr, "ttcp%s: ", trans ? "-t" : "-r");
perror(s);
fprintf(stderr, "errno=%d\n", errno);
exit(1);
}
static void mes(char *s)
{
fprintf(stderr, "ttcp%s: %s\n", trans ? "-t" : "-r", s);
}
static void pattern(char *cp, size_t cnt)
{
char c = 0;
while (cnt-- > 0) {
while (!isprint((c & 0x7F)))
c++;
*cp++ = (c++ & 0x7F);
}
}
static void tvadd(struct timeval *tsum, struct timeval *t0, struct timeval *t1)
{
tsum->tv_sec = t0->tv_sec + t1->tv_sec;
tsum->tv_usec = t0->tv_usec + t1->tv_usec;
if (tsum->tv_usec > 1000000)
tsum->tv_sec++, tsum->tv_usec -= 1000000;
}
static void tvsub(struct timeval *tdiff, struct timeval *t1, struct timeval *t0)
{
tdiff->tv_sec = t1->tv_sec - t0->tv_sec;
tdiff->tv_usec = t1->tv_usec - t0->tv_usec;
if (tdiff->tv_usec < 0)
tdiff->tv_sec--, tdiff->tv_usec += 1000000;
}
#define END(x) {while(*x) x++;}
static void psecs(int l, char *cp)
{
int i;
i = l / 3600;
if (i) {
sprintf(cp, "%d:", i);
END(cp);
i = l % 3600;
sprintf(cp, "%d%d", (i / 60) / 10, (i / 60) % 10);
END(cp);
} else {
i = l;
sprintf(cp, "%d", i / 60);
END(cp);
}
i %= 60;
*cp++ = ':';
sprintf(cp, "%d%d", i / 10, i % 10);
}
/*
* M R E A D
*
* This function performs the function of a read(II) but will
* call read(II) multiple times in order to get the requested
* number of characters. This can be necessary because
* network connections don't deliver data with the same
* grouping as it is written with. Written by Robert S. Miles, BRL.
*/
static ssize_t mread(int fd, char *bufp, size_t len)
{
int nread;
size_t bytes = 0;
do {
nread = read(fd, bufp, len - bytes);
numCalls++;
if (nread < 0) {
perror("ttcp_mread");
return (-1);
}
if (nread == 0)
return ((int)bytes);
bytes += (unsigned)nread;
bufp += nread;
} while (bytes < len);
return bytes;
}
/*
* N R E A D
*/
static ssize_t Nread(int fd, char *buf, size_t len)
{
size_t bytes;
struct sockaddr_in from;
socklen_t from_len = sizeof(from);
if (udp) {
bytes = recvfrom(fd, buf, len, 0, (struct sockaddr *)&from, &from_len);
numCalls++;
} else {
if (b_flag)
bytes = mread(fd, buf, len); /* fill buf */
else {
bytes = read(fd, buf, len);
numCalls++;
}
}
return bytes;
}
static void delay(int us)
{
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = us;
select(1, NULL, NULL, NULL, &tv);
}
/*
* N W R I T E
*/
static ssize_t Nwrite(int fd, char *buf, size_t len)
{
int i;
ssize_t bytes;
if (rate > 0)
for (i = 0; i < rate * 100; i++) ;
if (udp) {
again:
bytes = sendto(fd, buf, len, 0, (struct sockaddr *)&sinhim, sizeof(sinhim));
numCalls++;
if (bytes < 0 && errno == ENOBUFS) {
delay(18000);
errno = 0;
goto again;
}
} else {
bytes = write(fd, buf, len);
numCalls++;
}
return bytes;
}
int main(int argc, char *argv[])
{
unsigned long addr_tmp;
if (argc < 2)
goto usage;
argv++;
argc--;
while (argc > 0 && argv[0][0] == '-') {
switch (argv[0][1]) {
case 'B':
b_flag = 1;
break;
case 't':
trans = 1;
break;
case 'r':
trans = 0;
break;
case 'd':
options |= SO_DEBUG;
break;
case 'D':
nodelay = 1;
break;
case 'n':
nbuf = atoi(&argv[0][2]);
break;
case 'l':
buflen = atoi(&argv[0][2]);
break;
case 's':
sinkmode = 0; /* sink/source data */
break;
case 'p':
port = atoi(&argv[0][2]);
break;
case 'u':
udp = 1;
break;
case 'v':
verbose = 1;
break;
case 'A':
bufalign = atoi(&argv[0][2]);
break;
case 'O':
bufoffset = atoi(&argv[0][2]);
break;
case 'i':
ttl = atoi(&argv[0][2]);
break;
case 'R':
rate = atol(&argv[0][2]);
break;
case 'm':
mcast = 1;
argv++;
argc--;
if (argc > 0)
mgroup = argv[0];
else
goto usage;
break;
default:
goto usage;
}
argv++;
argc--;
}
if (trans) {
/* xmitr */
if (argc != 1)
goto usage;
memset(&sinhim, 0, sizeof(sinhim));
host = argv[0];
if (atoi(host) > 0) {
/* Numeric */
sinhim.sin_family = AF_INET;
#if defined(cray)
addr_tmp = inet_addr(host);
sinhim.sin_addr = addr_tmp;
#else
sinhim.sin_addr.s_addr = inet_addr(host);
#endif
} else {
if ((addr = gethostbyname(host)) == NULL)
err("bad hostname");
sinhim.sin_family = addr->h_addrtype;
memcpy(&addr_tmp, addr->h_addr, addr->h_length);
#if defined(cray)
sinhim.sin_addr = addr_tmp;
#else
sinhim.sin_addr.s_addr = addr_tmp;
#endif /* cray */
}
sinhim.sin_port = htons(port);
sinme.sin_port = 0; /* free choice */
} else {
/* rcvr */
sinme.sin_port = htons(port);
}
if (udp && buflen < 5) {
buflen = 5; /* send more than the sentinel size */
}
buf = (char *)malloc(buflen + bufalign);
if (!buf)
err("malloc");
if (bufalign != 0)
buf += (bufalign - ((int)buf % bufalign) + bufoffset) % bufalign;
if (trans) {
fprintf(stdout,
"#ttcp-t: buflen=%zd, nbuf=%d, align=%d/+%d, port=%d %s -> %s\n",
buflen, nbuf, bufalign, bufoffset, port, udp ? "udp" : "tcp", argv[0]);
} else {
fprintf(stdout,
"#ttcp-r: buflen=%zd, nbuf=%d, align=%d/+%d, port=%d %s\n",
buflen, nbuf, bufalign, bufoffset, port, udp ? "udp" : "tcp");
}
if ((fd = socket(AF_INET, udp ? SOCK_DGRAM : SOCK_STREAM, 0)) < 0)
err("socket");
mes("socket");
if (bind(fd, (struct sockaddr *)&sinme, sizeof(sinme)) < 0)
err("bind");
if (mcast) {
struct ip_mreq stMreq;
stMreq.imr_multiaddr.s_addr = inet_addr(mgroup);
stMreq.imr_interface.s_addr = INADDR_ANY;
if (setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *)&stMreq, sizeof(stMreq)) < 0)
err("multicast group join");
else
fprintf(stdout, "#Joined group %s\n", mgroup);
}
if (!udp) {
signal(SIGPIPE, sigpipe);
if (trans) {
/* We are the client if transmitting */
if (options) {
#if defined(BSD42)
if (setsockopt(fd, SOL_SOCKET, options, 0, 0) < 0)
#else /* BSD43 */
if (setsockopt(fd, SOL_SOCKET, options, &one, sizeof(one)) < 0)
#endif
err("setsockopt");
}
if (nodelay) {
struct protoent *p;
p = getprotobyname("tcp");
if (p && setsockopt(fd, p->p_proto, TCP_NODELAY, &one, sizeof(one)) < 0)
err("setsockopt: nodelay");
mes("nodelay");
}
if (connect(fd, (struct sockaddr *)&sinhim, sizeof(sinhim)) < 0)
err("connect");
mes("connect");
} else {
/* otherwise, we are the server and
* should listen for the connections
*/
listen(fd, 0); /* allow a queue of 0 */
if (options) {
#if defined(BSD42)
if (setsockopt(fd, SOL_SOCKET, options, 0, 0) < 0)
#else /* BSD43 */
if (setsockopt(fd, SOL_SOCKET, options, &one, sizeof(one)) < 0)
#endif
err("setsockopt");
}
fromlen = sizeof(frominet);
domain = AF_INET;
if ((fd = accept(fd, (struct sockaddr *)&frominet, &fromlen)) < 0) {
err("accept");
} else {
struct sockaddr_in peer;
socklen_t peerlen = sizeof(peer);
if (getpeername(fd, (struct sockaddr *)&peer, &peerlen) < 0)
err("getpeername");
fprintf(stderr, "ttcp-r: accept from %s\n", inet_ntoa(peer.sin_addr));
}
}
}
prep_timer();
errno = 0;
if (sinkmode) {
ssize_t cnt;
if (udp) {
int ret = 0;
if ((ntohl(sinhim.sin_addr.s_addr)) >> 28 == 0xe) {
ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof(int));
if (ret == -1)
fprintf(stderr, "Error while setting TTL\n");
else
fprintf(stdout, "#TTL set to %d\n", ttl);
}
}
if (trans) {
pattern(buf, buflen);
if (udp)
Nwrite(fd, buf, 4); /* rcvr start */
while (nbuf-- && Nwrite(fd, buf, buflen) == (ssize_t)buflen)
nbytes += buflen;
if (udp)
Nwrite(fd, buf, 4); /* rcvr end */
} else {
if (udp) {
while ((cnt = Nread(fd, buf, buflen)) > 0) {
/*
//yp9x: allow for duplicate starting packet
static int going = 2;
if( cnt <= 4 ) {
if( going == 0)
break;
going--;
prep_timer();
*/
/*
//original version
static int going = 0;
if( cnt <= 4 ) {
if( going )
break;
going=1;
prep_timer();
*/
static int going = 0;
if (cnt <= 4) {
if (going)
break;
going = 1;
prep_timer();
} else {
nbytes += cnt;
read_timer(stats, sizeof(stats));
// fprintf(stdout, "%f\t%d\n", realt, nbytes);
rcvIndex++;
}
}
} else {
while ((cnt = Nread(fd, buf, buflen)) > 0) {
nbytes += cnt;
}
}
}
} else {
ssize_t cnt;
if (trans) {
while ((cnt = read(0, buf, buflen)) > 0 && Nwrite(fd, buf, cnt) == cnt)
nbytes += cnt;
} else {
while ((cnt = Nread(fd, buf, buflen)) > 0 && write(1, buf, cnt) == cnt)
nbytes += cnt;
}
}
if (errno)
err("IO");
read_timer(stats, sizeof(stats));
if (udp && trans) {
Nwrite(fd, buf, 4); /* rcvr end */
Nwrite(fd, buf, 4); /* rcvr end */
Nwrite(fd, buf, 4); /* rcvr end */
Nwrite(fd, buf, 4); /* rcvr end */
Nwrite(fd, buf, 4); /* rcvr end *//* yp9x */
Nwrite(fd, buf, 4); /* rcvr end *//* yp9x */
Nwrite(fd, buf, 4); /* rcvr end *//* yp9x */
Nwrite(fd, buf, 4); /* rcvr end *//* yp9x */
}
if (cput <= 0.0)
cput = 0.001;
if (realt <= 0.0)
realt = 0.001;
fprintf(stdout, "#ttcp%s: %ld bytes in %.2f real seconds = %.2f KB/sec +++\n",
trans ? "-t" : "-r", nbytes, realt, ((double)nbytes) / realt / 1024);
if (verbose) {
fprintf(stdout,
"#ttcp%s: %ld bytes in %.2f CPU seconds = %.2f KB/cpu sec\n",
trans ? "-t" : "-r", nbytes, cput, ((double)nbytes) / cput / 1024);
}
fprintf(stdout, "#ttcp%s: %zd I/O calls, msec/call = %.2f, calls/sec = %.2f\n",
trans ? "-t" : "-r", numCalls, 1024.0 * realt / ((double)numCalls), ((double)numCalls) / realt);
fprintf(stdout, "#ttcp%s: %s\n", trans ? "-t" : "-r", stats);
if (verbose) {
fprintf(stdout, "#ttcp%s: buffer address %p\n", trans ? "-t" : "-r", buf);
}
/* printStats(); */
exit(0);
usage:
fprintf(stderr, "%s", Usage);
exit(1);
}
static struct timeval time0; /* Time at which timing started */
static struct rusage ru0; /* Resource utilization at the start */
static void prusage();
static void tvadd();
static void tvsub();
static void psecs();
#if defined(SYSV)
/*ARGSUSED*/ static getrusage(ignored, ru)
int ignored;
struct rusage *ru;
{
struct tms buf;
times(&buf);
/* Assumption: HZ <= 2147 (LONG_MAX/1000000) */
ru->ru_stime.tv_sec = buf.tms_stime / HZ;
ru->ru_stime.tv_usec = ((buf.tms_stime % HZ) * 1000000) / HZ;
ru->ru_utime.tv_sec = buf.tms_utime / HZ;
ru->ru_utime.tv_usec = ((buf.tms_utime % HZ) * 1000000) / HZ;
}
#if !defined(sgi)
/*ARGSUSED*/ static gettimeofday(tp, zp)
struct timeval *tp;
struct timezone *zp;
{
tp->tv_sec = time(0);
tp->tv_usec = 0;
}
#endif
#endif /* SYSV */
/*
* P R E P _ T I M E R
*/
void prep_timer(void)
{
gettimeofday(&time0, (struct timezone *)0);
getrusage(RUSAGE_SELF, &ru0);
}
/*
* R E A D _ T I M E R
*
*/
double read_timer(char *str, int len)
{
struct timeval timedol;
struct rusage ru1;
struct timeval td;
struct timeval tend, tstart;
char line[132];
getrusage(RUSAGE_SELF, &ru1);
gettimeofday(&timedol, (struct timezone *)0);
prusage(&ru0, &ru1, &timedol, &time0, line);
strncpy(str, line, len);
/* Get real time */
tvsub(&td, &timedol, &time0);
realt = td.tv_sec + ((double)td.tv_usec) / 1000000;
/* Get CPU time (user+sys) */
tvadd(&tend, &ru1.ru_utime, &ru1.ru_stime);
tvadd(&tstart, &ru0.ru_utime, &ru0.ru_stime);
tvsub(&td, &tend, &tstart);
cput = td.tv_sec + ((double)td.tv_usec) / 1000000;
if (cput < 0.00001)
cput = 0.00001;
return (cput);
}
static void prusage(struct rusage *r0, struct rusage *r1, struct timeval *e, struct timeval *b, char *outp)
{
struct timeval tdiff;
time_t t;
char *cp;
int i;
int ms;
t = (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 +
(r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 +
(r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 + (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000;
ms = (e->tv_sec - b->tv_sec) * 100 + (e->tv_usec - b->tv_usec) / 10000;
#if defined(SYSV)
cp = "%Uuser %Ssys %Ereal %P";
#else
cp = "%Uuser %Ssys %Ereal %P %Xi+%Dd %Mmaxrss %F+%Rpf %Ccsw";
#endif
for (; *cp; cp++) {
if (*cp != '%')
*outp++ = *cp;
else if (cp[1])
switch (*++cp) {
case 'U':
tvsub(&tdiff, &r1->ru_utime, &r0->ru_utime);
sprintf(outp, "%d.%01d", (int)tdiff.tv_sec, (int)tdiff.tv_usec / 100000);
END(outp);
break;
case 'S':
tvsub(&tdiff, &r1->ru_stime, &r0->ru_stime);
sprintf(outp, "%d.%01d", (int)tdiff.tv_sec, (int)tdiff.tv_usec / 100000);
END(outp);
break;
case 'E':
psecs(ms / 100, outp);
END(outp);
break;
case 'P':
sprintf(outp, "%d%%", (int)(t * 100 / ((ms ? ms : 1))));
END(outp);
break;
#if !defined(SYSV)
case 'W':
i = r1->ru_nswap - r0->ru_nswap;
sprintf(outp, "%d", i);
END(outp);
break;
case 'X':
sprintf(outp, "%d", t == 0 ? 0 : (int)((r1->ru_ixrss - r0->ru_ixrss) / t));
END(outp);
break;
case 'D':
sprintf(outp, "%d", t == 0 ? 0 : (int)((r1->ru_idrss + r1->ru_isrss - (r0->ru_idrss + r0->ru_isrss)) / t));
END(outp);
break;
case 'K':
sprintf(outp, "%d", t == 0 ? 0 : (int)(
((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) -
(r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) / t));
END(outp);
break;
case 'M':
sprintf(outp, "%d", (int)(r1->ru_maxrss / 2));
END(outp);
break;
case 'F':
sprintf(outp, "%d", (int)(r1->ru_majflt - r0->ru_majflt));
END(outp);
break;
case 'R':
sprintf(outp, "%d", (int)(r1->ru_minflt - r0->ru_minflt));
END(outp);
break;
case 'I':
sprintf(outp, "%d", (int)(r1->ru_inblock - r0->ru_inblock));
END(outp);
break;
case 'O':
sprintf(outp, "%d", (int)(r1->ru_oublock - r0->ru_oublock));
END(outp);
break;
case 'C':
sprintf(outp, "%d+%d", (int)(r1->ru_nvcsw - r0->ru_nvcsw),
(int)(r1->ru_nivcsw - r0->ru_nivcsw));
END(outp);
break;
#endif /* !SYSV */
}
}
*outp = '\0';
}
/**
* Local Variables:
* version-control: t
* indent-tabs-mode: t
* c-file-style: "linux"
* End:
*/