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 */ 32 33 #include <rpc/rpc.h> 34 #include <rpcsvc/spray.h> 35 36 #include <err.h> 37 #include <limits.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <unistd.h> 41 42 #ifndef SPRAYOVERHEAD 43 #define SPRAYOVERHEAD 86 44 #endif 45 46 static void usage(void); 47 static void print_xferstats(unsigned int, int, double); 48 static int getnum(const char *); 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(int argc, char *argv[]) 60 { 61 spraycumul host_stats; 62 sprayarr host_array; 63 CLIENT *cl; 64 int c; 65 u_int i; 66 u_int count = 0; 67 int delay = 0; 68 int length = 0; 69 double xmit_time; /* time to receive data */ 70 71 while ((c = getopt(argc, argv, "c:d:l:")) != -1) { 72 switch (c) { 73 case 'c': 74 count = getnum(optarg); 75 break; 76 case 'd': 77 delay = getnum(optarg); 78 break; 79 case 'l': 80 length = getnum(optarg); 81 break; 82 default: 83 usage(); 84 /* NOTREACHED */ 85 } 86 } 87 argc -= optind; 88 argv += optind; 89 90 if (argc != 1) { 91 usage(); 92 /* NOTREACHED */ 93 } 94 95 96 /* Correct packet length. */ 97 if (length > SPRAYMAX) { 98 length = SPRAYMAX; 99 } else if (length < SPRAYOVERHEAD) { 100 length = SPRAYOVERHEAD; 101 } else { 102 /* The RPC portion of the packet is a multiple of 32 bits. */ 103 length -= SPRAYOVERHEAD - 3; 104 length &= ~3; 105 length += SPRAYOVERHEAD; 106 } 107 108 109 /* 110 * The default value of count is the number of packets required 111 * to make the total stream size 100000 bytes. 112 */ 113 if (!count) { 114 count = 100000 / length; 115 } 116 117 /* Initialize spray argument */ 118 host_array.sprayarr_len = length - SPRAYOVERHEAD; 119 host_array.sprayarr_val = spray_buffer; 120 121 122 /* create connection with server */ 123 if ((cl = clnt_create(*argv, SPRAYPROG, SPRAYVERS, "udp")) == NULL) { 124 clnt_pcreateerror(getprogname()); 125 exit(1); 126 } 127 128 /* 129 * For some strange reason, RPC 4.0 sets the default timeout, 130 * thus timeouts specified in clnt_call() are always ignored. 131 * 132 * The following (undocumented) hack resets the internal state 133 * of the client handle. 134 */ 135 clnt_control(cl, CLSET_TIMEOUT, (caddr_t)&NO_DEFAULT); 136 137 138 /* Clear server statistics */ 139 if (clnt_call(cl, SPRAYPROC_CLEAR, (xdrproc_t)xdr_void, NULL, 140 (xdrproc_t)xdr_void, NULL, TIMEOUT) != RPC_SUCCESS) { 141 clnt_perror(cl, getprogname()); 142 exit(1); 143 } 144 145 /* Spray server with packets */ 146 printf ("sending %u packets of lnth %d to %s ...", count, length, 147 *argv); 148 fflush (stdout); 149 150 for (i = 0; i < count; i++) { 151 clnt_call(cl, SPRAYPROC_SPRAY, (xdrproc_t)xdr_sprayarr, 152 &host_array, (xdrproc_t)xdr_void, NULL, ONE_WAY); 153 154 if (delay) { 155 usleep(delay); 156 } 157 } 158 159 160 /* Collect statistics from server */ 161 if (clnt_call(cl, SPRAYPROC_GET, (xdrproc_t)xdr_void, NULL, 162 (xdrproc_t)xdr_spraycumul, &host_stats, TIMEOUT) != RPC_SUCCESS) { 163 clnt_perror(cl, getprogname()); 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 clnt_destroy(cl); 191 exit (0); 192 } 193 194 195 static void 196 print_xferstats(u_int packets, int packetlen, double xfertime) 197 { 198 int datalen; 199 double pps; /* packets per second */ 200 double bps; /* bytes per second */ 201 202 datalen = packets * packetlen; 203 pps = packets / xfertime; 204 bps = datalen / xfertime; 205 206 printf("\t%.0f packets/sec, ", pps); 207 208 if (bps >= 1024) 209 printf ("%.1fK ", bps / 1024); 210 else 211 printf ("%.0f ", bps); 212 213 printf("bytes/sec\n"); 214 } 215 216 static int 217 getnum(const char *arg) 218 { 219 char *ep; 220 long tmp; 221 222 tmp = strtol(arg, &ep, 10); 223 if (*ep != '\0' || tmp < INT_MIN || tmp > INT_MAX) 224 errx(1, "invalid value: %s", arg); 225 226 return((int)tmp); 227 } 228 229 static void 230 usage(void) 231 { 232 fprintf(stderr, 233 "usage: spray [-c count] [-l length] [-d delay] host\n"); 234 exit(1); 235 } 236