xref: /freebsd/usr.sbin/spray/spray.c (revision d021b6c07a26e956d076f2ef0698f74d67337dbf)
1 /*
2  * Copyright (c) 1993 Winning Strategies, Inc.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *      This product includes software developed by Winning Strategies, Inc.
16  * 4. The name of the author may not be used to endorse or promote products
17  *    derived from this software without specific prior written permission
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  *
30  *	$Id: spray.c,v 1.3 1994/12/23 16:42:47 cgd Exp $
31  */
32 
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <unistd.h>
36 
37 #include <rpc/rpc.h>
38 #include <rpcsvc/spray.h>
39 
40 #ifndef SPRAYOVERHEAD
41 #define SPRAYOVERHEAD	86
42 #endif
43 
44 void usage ();
45 void print_xferstats ();
46 
47 /* spray buffer */
48 char spray_buffer[SPRAYMAX];
49 
50 /* RPC timeouts */
51 struct timeval NO_DEFAULT = { -1, -1 };
52 struct timeval ONE_WAY = { 0, 0 };
53 struct timeval TIMEOUT = { 25, 0 };
54 
55 int
56 main(argc, argv)
57 	int argc;
58 	char **argv;
59 {
60 	char *progname;
61 	spraycumul	host_stats;
62 	sprayarr	host_array;
63 	CLIENT *cl;
64 	int c;
65 	int i;
66 	int count = 0;
67 	int delay = 0;
68 	int length = 0;
69 	double xmit_time;			/* time to receive data */
70 
71 	progname = *argv;
72 	while ((c = getopt(argc, argv, "c:d:l:")) != -1) {
73 		switch (c) {
74 		case 'c':
75 			count = atoi(optarg);
76 			break;
77 		case 'd':
78 			delay = atoi(optarg);
79 			break;
80 		case 'l':
81 			length = atoi(optarg);
82 			break;
83 		default:
84 			usage();
85 			/* NOTREACHED */
86 		}
87 	}
88 	argc -= optind;
89 	argv += optind;
90 
91 	if (argc != 1) {
92 		usage();
93 		/* NOTREACHED */
94 	}
95 
96 
97 	/* Correct packet length. */
98 	if (length > SPRAYMAX) {
99 		length = SPRAYMAX;
100 	} else if (length < SPRAYOVERHEAD) {
101 		length = SPRAYOVERHEAD;
102 	} else {
103 		/* The RPC portion of the packet is a multiple of 32 bits. */
104 		length -= SPRAYOVERHEAD - 3;
105 		length &= ~3;
106 		length += SPRAYOVERHEAD;
107 	}
108 
109 
110 	/*
111 	 * The default value of count is the number of packets required
112 	 * to make the total stream size 100000 bytes.
113 	 */
114 	if (!count) {
115 		count = 100000 / length;
116 	}
117 
118 	/* Initialize spray argument */
119 	host_array.sprayarr_len = length - SPRAYOVERHEAD;
120 	host_array.sprayarr_val = spray_buffer;
121 
122 
123 	/* create connection with server */
124 	cl = clnt_create(*argv, SPRAYPROG, SPRAYVERS, "udp");
125 	if (cl == NULL) {
126 		clnt_pcreateerror(progname);
127 		exit(1);
128 	}
129 
130 
131 	/*
132 	 * For some strange reason, RPC 4.0 sets the default timeout,
133 	 * thus timeouts specified in clnt_call() are always ignored.
134 	 *
135 	 * The following (undocumented) hack resets the internal state
136 	 * of the client handle.
137 	 */
138 	clnt_control(cl, CLSET_TIMEOUT, (caddr_t)&NO_DEFAULT);
139 
140 
141 	/* Clear server statistics */
142 	if (clnt_call(cl, SPRAYPROC_CLEAR, xdr_void, NULL, xdr_void, NULL, TIMEOUT) != RPC_SUCCESS) {
143 		clnt_perror(cl, progname);
144 		exit(1);
145 	}
146 
147 
148 	/* Spray server with packets */
149 	printf ("sending %d packets of lnth %d to %s ...", count, length, *argv);
150 	fflush (stdout);
151 
152 	for (i = 0; i < count; i++) {
153 		clnt_call(cl, SPRAYPROC_SPRAY, xdr_sprayarr, &host_array, xdr_void, NULL, ONE_WAY);
154 
155 		if (delay) {
156 			usleep(delay);
157 		}
158 	}
159 
160 
161 	/* Collect statistics from server */
162 	if (clnt_call(cl, SPRAYPROC_GET, xdr_void, NULL, xdr_spraycumul, &host_stats, TIMEOUT) != RPC_SUCCESS) {
163 		clnt_perror(cl, progname);
164 		exit(1);
165 	}
166 
167 	xmit_time = host_stats.clock.sec +
168 			(host_stats.clock.usec / 1000000.0);
169 
170 	printf ("\n\tin %.2f seconds elapsed time\n", xmit_time);
171 
172 
173 	/* report dropped packets */
174 	if (host_stats.counter != count) {
175 		int packets_dropped = count - host_stats.counter;
176 
177 		printf("\t%d packets (%.2f%%) dropped\n",
178 			packets_dropped,
179 			100.0 * packets_dropped / count );
180 	} else {
181 		printf("\tno packets dropped\n");
182 	}
183 
184 	printf("Sent:");
185 	print_xferstats(count, length, xmit_time);
186 
187 	printf("Rcvd:");
188 	print_xferstats(host_stats.counter, length, xmit_time);
189 
190 	exit (0);
191 }
192 
193 
194 void
195 print_xferstats(packets, packetlen, xfertime)
196 	int packets;
197 	int packetlen;
198 	double xfertime;
199 {
200 	int datalen;
201 	double pps;		/* packets per second */
202 	double bps;		/* bytes per second */
203 
204 	datalen = packets * packetlen;
205 	pps = packets / xfertime;
206 	bps = datalen / xfertime;
207 
208 	printf("\t%.0f packets/sec, ", pps);
209 
210 	if (bps >= 1024)
211 		printf ("%.1fK ", bps / 1024);
212 	else
213 		printf ("%.0f ", bps);
214 
215 	printf("bytes/sec\n");
216 }
217 
218 
219 void
220 usage ()
221 {
222 	fprintf(stderr, "usage: spray [-c count] [-l length] [-d delay] host\n");
223 	exit(1);
224 }
225