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 1.3 2004/11/16 19:06:29 liamfoy Exp $ 32 */ 33 34 #include <err.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <unistd.h> 38 39 #include <rpc/rpc.h> 40 #include <rpcsvc/spray.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 49 /* spray buffer */ 50 char spray_buffer[SPRAYMAX]; 51 52 /* RPC timeouts */ 53 struct timeval NO_DEFAULT = { -1, -1 }; 54 struct timeval ONE_WAY = { 0, 0 }; 55 struct timeval TIMEOUT = { 25, 0 }; 56 57 int 58 main(int argc, char *argv[]) 59 { 60 spraycumul host_stats; 61 sprayarr host_array; 62 CLIENT *cl; 63 int c; 64 u_int i; 65 u_int count = 0; 66 int delay = 0; 67 int length = 0; 68 double xmit_time; /* time to receive data */ 69 70 while ((c = getopt(argc, argv, "c:d:l:")) != -1) { 71 switch (c) { 72 case 'c': 73 count = atoi(optarg); 74 break; 75 case 'd': 76 delay = atoi(optarg); 77 break; 78 case 'l': 79 length = atoi(optarg); 80 break; 81 default: 82 usage(); 83 /* NOTREACHED */ 84 } 85 } 86 argc -= optind; 87 argv += optind; 88 89 if (argc != 1) { 90 usage(); 91 /* NOTREACHED */ 92 } 93 94 95 /* Correct packet length. */ 96 if (length > SPRAYMAX) { 97 length = SPRAYMAX; 98 } else if (length < SPRAYOVERHEAD) { 99 length = SPRAYOVERHEAD; 100 } else { 101 /* The RPC portion of the packet is a multiple of 32 bits. */ 102 length -= SPRAYOVERHEAD - 3; 103 length &= ~3; 104 length += SPRAYOVERHEAD; 105 } 106 107 108 /* 109 * The default value of count is the number of packets required 110 * to make the total stream size 100000 bytes. 111 */ 112 if (!count) { 113 count = 100000 / length; 114 } 115 116 /* Initialize spray argument */ 117 host_array.sprayarr_len = length - SPRAYOVERHEAD; 118 host_array.sprayarr_val = spray_buffer; 119 120 121 /* create connection with server */ 122 if ((cl = clnt_create(*argv, SPRAYPROG, SPRAYVERS, "udp")) == NULL) 123 clnt_pcreateerror(getprogname()); 124 125 126 /* 127 * For some strange reason, RPC 4.0 sets the default timeout, 128 * thus timeouts specified in clnt_call() are always ignored. 129 * 130 * The following (undocumented) hack resets the internal state 131 * of the client handle. 132 */ 133 clnt_control(cl, CLSET_TIMEOUT, (caddr_t)&NO_DEFAULT); 134 135 136 /* Clear server statistics */ 137 if (clnt_call(cl, SPRAYPROC_CLEAR, xdr_void, NULL, xdr_void, NULL, TIMEOUT) != RPC_SUCCESS) { 138 clnt_perror(cl, getprogname()); 139 exit(1); 140 } 141 142 /* Spray server with packets */ 143 printf ("sending %u packets of lnth %d to %s ...", count, length, 144 *argv); 145 fflush (stdout); 146 147 for (i = 0; i < count; i++) { 148 clnt_call(cl, SPRAYPROC_SPRAY, xdr_sprayarr, &host_array, xdr_void, NULL, ONE_WAY); 149 150 if (delay) { 151 usleep(delay); 152 } 153 } 154 155 156 /* Collect statistics from server */ 157 if (clnt_call(cl, SPRAYPROC_GET, xdr_void, NULL, xdr_spraycumul, &host_stats, TIMEOUT) != RPC_SUCCESS) { 158 clnt_perror(cl, getprogname()); 159 exit(1); 160 } 161 162 xmit_time = host_stats.clock.sec + 163 (host_stats.clock.usec / 1000000.0); 164 165 printf ("\n\tin %.2f seconds elapsed time\n", xmit_time); 166 167 168 /* report dropped packets */ 169 if (host_stats.counter != count) { 170 int packets_dropped = count - host_stats.counter; 171 172 printf("\t%d packets (%.2f%%) dropped\n", 173 packets_dropped, 174 100.0 * packets_dropped / count ); 175 } else { 176 printf("\tno packets dropped\n"); 177 } 178 179 printf("Sent:"); 180 print_xferstats(count, length, xmit_time); 181 182 printf("Rcvd:"); 183 print_xferstats(host_stats.counter, length, xmit_time); 184 185 clnt_destroy(cl); 186 exit (0); 187 } 188 189 190 static void 191 print_xferstats(u_int packets, int packetlen, double xfertime) 192 { 193 int datalen; 194 double pps; /* packets per second */ 195 double bps; /* bytes per second */ 196 197 datalen = packets * packetlen; 198 pps = packets / xfertime; 199 bps = datalen / xfertime; 200 201 printf("\t%.0f packets/sec, ", pps); 202 203 if (bps >= 1024) 204 printf ("%.1fK ", bps / 1024); 205 else 206 printf ("%.0f ", bps); 207 208 printf("bytes/sec\n"); 209 } 210 211 212 static void 213 usage(void) 214 { 215 fprintf(stderr, 216 "usage: spray [-c count] [-l length] [-d delay] host\n"); 217 exit(1); 218 } 219