xref: /freebsd/usr.sbin/spray/spray.c (revision 380a989b3223d455375b4fae70fd0b9bdd43bafb)
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 
31 #ifndef lint
32 static const char rcsid[] =
33 	"$Id$";
34 #endif /* not lint */
35 
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <unistd.h>
39 
40 #include <rpc/rpc.h>
41 #include <rpcsvc/spray.h>
42 
43 #ifndef SPRAYOVERHEAD
44 #define SPRAYOVERHEAD	86
45 #endif
46 
47 static void usage ();
48 void print_xferstats ();
49 
50 /* spray buffer */
51 char spray_buffer[SPRAYMAX];
52 
53 /* RPC timeouts */
54 struct timeval NO_DEFAULT = { -1, -1 };
55 struct timeval ONE_WAY = { 0, 0 };
56 struct timeval TIMEOUT = { 25, 0 };
57 
58 int
59 main(argc, argv)
60 	int argc;
61 	char **argv;
62 {
63 	spraycumul	host_stats;
64 	sprayarr	host_array;
65 	CLIENT *cl;
66 	int c;
67 	int i;
68 	int count = 0;
69 	int delay = 0;
70 	int length = 0;
71 	double xmit_time;			/* time to receive data */
72 
73 	while ((c = getopt(argc, argv, "c:d:l:")) != -1) {
74 		switch (c) {
75 		case 'c':
76 			count = atoi(optarg);
77 			break;
78 		case 'd':
79 			delay = atoi(optarg);
80 			break;
81 		case 'l':
82 			length = atoi(optarg);
83 			break;
84 		default:
85 			usage();
86 			/* NOTREACHED */
87 		}
88 	}
89 	argc -= optind;
90 	argv += optind;
91 
92 	if (argc != 1) {
93 		usage();
94 		/* NOTREACHED */
95 	}
96 
97 
98 	/* Correct packet length. */
99 	if (length > SPRAYMAX) {
100 		length = SPRAYMAX;
101 	} else if (length < SPRAYOVERHEAD) {
102 		length = SPRAYOVERHEAD;
103 	} else {
104 		/* The RPC portion of the packet is a multiple of 32 bits. */
105 		length -= SPRAYOVERHEAD - 3;
106 		length &= ~3;
107 		length += SPRAYOVERHEAD;
108 	}
109 
110 
111 	/*
112 	 * The default value of count is the number of packets required
113 	 * to make the total stream size 100000 bytes.
114 	 */
115 	if (!count) {
116 		count = 100000 / length;
117 	}
118 
119 	/* Initialize spray argument */
120 	host_array.sprayarr_len = length - SPRAYOVERHEAD;
121 	host_array.sprayarr_val = spray_buffer;
122 
123 
124 	/* create connection with server */
125 	cl = clnt_create(*argv, SPRAYPROG, SPRAYVERS, "udp");
126 	if (cl == NULL) {
127 		clnt_pcreateerror("spray");
128 		exit(1);
129 	}
130 
131 
132 	/*
133 	 * For some strange reason, RPC 4.0 sets the default timeout,
134 	 * thus timeouts specified in clnt_call() are always ignored.
135 	 *
136 	 * The following (undocumented) hack resets the internal state
137 	 * of the client handle.
138 	 */
139 	clnt_control(cl, CLSET_TIMEOUT, (caddr_t)&NO_DEFAULT);
140 
141 
142 	/* Clear server statistics */
143 	if (clnt_call(cl, SPRAYPROC_CLEAR, xdr_void, NULL, xdr_void, NULL, TIMEOUT) != RPC_SUCCESS) {
144 		clnt_perror(cl, "spray");
145 		exit(1);
146 	}
147 
148 
149 	/* Spray server with packets */
150 	printf ("sending %d packets of lnth %d to %s ...", count, length, *argv);
151 	fflush (stdout);
152 
153 	for (i = 0; i < count; i++) {
154 		clnt_call(cl, SPRAYPROC_SPRAY, xdr_sprayarr, &host_array, xdr_void, NULL, ONE_WAY);
155 
156 		if (delay) {
157 			usleep(delay);
158 		}
159 	}
160 
161 
162 	/* Collect statistics from server */
163 	if (clnt_call(cl, SPRAYPROC_GET, xdr_void, NULL, xdr_spraycumul, &host_stats, TIMEOUT) != RPC_SUCCESS) {
164 		clnt_perror(cl, "spray");
165 		exit(1);
166 	}
167 
168 	xmit_time = host_stats.clock.sec +
169 			(host_stats.clock.usec / 1000000.0);
170 
171 	printf ("\n\tin %.2f seconds elapsed time\n", xmit_time);
172 
173 
174 	/* report dropped packets */
175 	if (host_stats.counter != count) {
176 		int packets_dropped = count - host_stats.counter;
177 
178 		printf("\t%d packets (%.2f%%) dropped\n",
179 			packets_dropped,
180 			100.0 * packets_dropped / count );
181 	} else {
182 		printf("\tno packets dropped\n");
183 	}
184 
185 	printf("Sent:");
186 	print_xferstats(count, length, xmit_time);
187 
188 	printf("Rcvd:");
189 	print_xferstats(host_stats.counter, length, xmit_time);
190 
191 	exit (0);
192 }
193 
194 
195 void
196 print_xferstats(packets, packetlen, xfertime)
197 	int packets;
198 	int packetlen;
199 	double xfertime;
200 {
201 	int datalen;
202 	double pps;		/* packets per second */
203 	double bps;		/* bytes per second */
204 
205 	datalen = packets * packetlen;
206 	pps = packets / xfertime;
207 	bps = datalen / xfertime;
208 
209 	printf("\t%.0f packets/sec, ", pps);
210 
211 	if (bps >= 1024)
212 		printf ("%.1fK ", bps / 1024);
213 	else
214 		printf ("%.0f ", bps);
215 
216 	printf("bytes/sec\n");
217 }
218 
219 
220 static void
221 usage ()
222 {
223 	fprintf(stderr,
224 		"usage: spray [-c count] [-l length] [-d delay] host\n");
225 	exit(1);
226 }
227