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 * $FreeBSD: src/usr.sbin/spray/spray.c,v 1.5.2.2 2001/07/30 10:23:00 dd Exp $ 31 * $DragonFly: src/usr.sbin/spray/spray.c,v 1.4 2005/03/19 17:43:18 liamfoy Exp $ 32 */ 33 34 #include <rpc/rpc.h> 35 #include <rpcsvc/spray.h> 36 37 #include <err.h> 38 #include <limits.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <unistd.h> 42 43 #ifndef SPRAYOVERHEAD 44 #define SPRAYOVERHEAD 86 45 #endif 46 47 static void usage(void); 48 static void print_xferstats(unsigned int, int, double); 49 static int getnum(const char *); 50 51 /* spray buffer */ 52 char spray_buffer[SPRAYMAX]; 53 54 /* RPC timeouts */ 55 struct timeval NO_DEFAULT = { -1, -1 }; 56 struct timeval ONE_WAY = { 0, 0 }; 57 struct timeval TIMEOUT = { 25, 0 }; 58 59 int 60 main(int argc, char *argv[]) 61 { 62 spraycumul host_stats; 63 sprayarr host_array; 64 CLIENT *cl; 65 int c; 66 u_int i; 67 u_int count = 0; 68 int delay = 0; 69 int length = 0; 70 double xmit_time; /* time to receive data */ 71 72 while ((c = getopt(argc, argv, "c:d:l:")) != -1) { 73 switch (c) { 74 case 'c': 75 count = getnum(optarg); 76 break; 77 case 'd': 78 delay = getnum(optarg); 79 break; 80 case 'l': 81 length = getnum(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 if ((cl = clnt_create(*argv, SPRAYPROG, SPRAYVERS, "udp")) == NULL) { 125 clnt_pcreateerror(getprogname()); 126 exit(1); 127 } 128 129 /* 130 * For some strange reason, RPC 4.0 sets the default timeout, 131 * thus timeouts specified in clnt_call() are always ignored. 132 * 133 * The following (undocumented) hack resets the internal state 134 * of the client handle. 135 */ 136 clnt_control(cl, CLSET_TIMEOUT, (caddr_t)&NO_DEFAULT); 137 138 139 /* Clear server statistics */ 140 if (clnt_call(cl, SPRAYPROC_CLEAR, (xdrproc_t)xdr_void, NULL, 141 (xdrproc_t)xdr_void, NULL, TIMEOUT) != RPC_SUCCESS) { 142 clnt_perror(cl, getprogname()); 143 exit(1); 144 } 145 146 /* Spray server with packets */ 147 printf ("sending %u packets of lnth %d to %s ...", count, length, 148 *argv); 149 fflush (stdout); 150 151 for (i = 0; i < count; i++) { 152 clnt_call(cl, SPRAYPROC_SPRAY, (xdrproc_t)xdr_sprayarr, 153 &host_array, (xdrproc_t)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, (xdrproc_t)xdr_void, NULL, 163 (xdrproc_t)xdr_spraycumul, &host_stats, TIMEOUT) != RPC_SUCCESS) { 164 clnt_perror(cl, getprogname()); 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 clnt_destroy(cl); 192 exit (0); 193 } 194 195 196 static void 197 print_xferstats(u_int packets, int packetlen, double xfertime) 198 { 199 int datalen; 200 double pps; /* packets per second */ 201 double bps; /* bytes per second */ 202 203 datalen = packets * packetlen; 204 pps = packets / xfertime; 205 bps = datalen / xfertime; 206 207 printf("\t%.0f packets/sec, ", pps); 208 209 if (bps >= 1024) 210 printf ("%.1fK ", bps / 1024); 211 else 212 printf ("%.0f ", bps); 213 214 printf("bytes/sec\n"); 215 } 216 217 static int 218 getnum(const char *arg) 219 { 220 char *ep; 221 long tmp; 222 223 tmp = strtol(arg, &ep, 10); 224 if (*ep != NULL || tmp < INT_MIN || tmp > INT_MAX) 225 errx(1, "invalid value: %s", arg); 226 227 return((int)tmp); 228 } 229 230 static void 231 usage(void) 232 { 233 fprintf(stderr, 234 "usage: spray [-c count] [-l length] [-d delay] host\n"); 235 exit(1); 236 } 237