1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1993 Winning Strategies, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Winning Strategies, Inc. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <err.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <unistd.h> 37 38 #include <rpc/rpc.h> 39 #include <rpcsvc/spray.h> 40 41 #ifndef SPRAYOVERHEAD 42 #define SPRAYOVERHEAD 86 43 #endif 44 45 static void usage(void) __dead2; 46 static void print_xferstats(unsigned int, int, double); 47 48 /* spray buffer */ 49 static char spray_buffer[SPRAYMAX]; 50 51 /* RPC timeouts */ 52 static struct timeval NO_DEFAULT = { -1, -1 }; 53 static struct timeval ONE_WAY = { 0, 0 }; 54 static struct timeval TIMEOUT = { 25, 0 }; 55 56 int 57 main(int argc, char *argv[]) 58 { 59 spraycumul host_stats; 60 sprayarr host_array; 61 CLIENT *cl; 62 int c; 63 u_int i; 64 u_int count = 0; 65 int delay = 0; 66 int length = 0; 67 double xmit_time; /* time to receive data */ 68 69 while ((c = getopt(argc, argv, "c:d:l:")) != -1) { 70 switch (c) { 71 case 'c': 72 count = atoi(optarg); 73 break; 74 case 'd': 75 delay = atoi(optarg); 76 break; 77 case 'l': 78 length = atoi(optarg); 79 break; 80 default: 81 usage(); 82 /* NOTREACHED */ 83 } 84 } 85 argc -= optind; 86 argv += optind; 87 88 if (argc != 1) { 89 usage(); 90 /* NOTREACHED */ 91 } 92 93 94 /* Correct packet length. */ 95 if (length > SPRAYMAX) { 96 length = SPRAYMAX; 97 } else if (length < SPRAYOVERHEAD) { 98 length = SPRAYOVERHEAD; 99 } else { 100 /* The RPC portion of the packet is a multiple of 32 bits. */ 101 length -= SPRAYOVERHEAD - 3; 102 length &= ~3; 103 length += SPRAYOVERHEAD; 104 } 105 106 107 /* 108 * The default value of count is the number of packets required 109 * to make the total stream size 100000 bytes. 110 */ 111 if (!count) { 112 count = 100000 / length; 113 } 114 115 /* Initialize spray argument */ 116 host_array.sprayarr_len = length - SPRAYOVERHEAD; 117 host_array.sprayarr_val = spray_buffer; 118 119 120 /* create connection with server */ 121 cl = clnt_create(*argv, SPRAYPROG, SPRAYVERS, "udp"); 122 if (cl == NULL) 123 errx(1, "%s", clnt_spcreateerror("")); 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, &NO_DEFAULT); 134 135 136 /* Clear server statistics */ 137 if (clnt_call(cl, SPRAYPROC_CLEAR, (xdrproc_t)xdr_void, NULL, 138 (xdrproc_t)xdr_void, NULL, TIMEOUT) != RPC_SUCCESS) 139 errx(1, "%s", clnt_sperror(cl, "")); 140 141 142 /* Spray server with packets */ 143 printf ("sending %u packets of length %d to %s ...", count, length, 144 *argv); 145 fflush (stdout); 146 147 for (i = 0; i < count; i++) { 148 clnt_call(cl, SPRAYPROC_SPRAY, (xdrproc_t)xdr_sprayarr, 149 &host_array, (xdrproc_t)xdr_void, NULL, ONE_WAY); 150 151 if (delay) { 152 usleep(delay); 153 } 154 } 155 156 157 /* Collect statistics from server */ 158 if (clnt_call(cl, SPRAYPROC_GET, (xdrproc_t)xdr_void, NULL, 159 (xdrproc_t)xdr_spraycumul, &host_stats, TIMEOUT) != RPC_SUCCESS) 160 errx(1, "%s", clnt_sperror(cl, "")); 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 exit (0); 186 } 187 188 189 static void 190 print_xferstats(u_int packets, int packetlen, double xfertime) 191 { 192 int datalen; 193 double pps; /* packets per second */ 194 double bps; /* bytes per second */ 195 196 datalen = packets * packetlen; 197 pps = packets / xfertime; 198 bps = datalen / xfertime; 199 200 printf("\t%.0f packets/sec, ", pps); 201 202 if (bps >= 1024) 203 printf ("%.1fK ", bps / 1024); 204 else 205 printf ("%.0f ", bps); 206 207 printf("bytes/sec\n"); 208 } 209 210 211 static void 212 usage(void) 213 { 214 fprintf(stderr, 215 "usage: spray [-c count] [-l length] [-d delay] host\n"); 216 exit(1); 217 } 218