1 /*- 2 * Copyright (c) 2008 Peter Holm <pho@FreeBSD.org> 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27 28 #include <sys/types.h> 29 #include <sys/socket.h> 30 #include <netinet/in.h> 31 #include <arpa/inet.h> 32 /*#include <sys/param.h>*/ 33 #include <netdb.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <unistd.h> 37 #include <errno.h> 38 #include <string.h> 39 #include <err.h> 40 41 #include "stress.h" 42 43 static int bufsize; 44 45 int 46 setup(int nb) 47 { 48 bufsize = 2 << random_int(1, 12); 49 return (0); 50 } 51 52 void 53 cleanup(void) 54 { 55 } 56 57 int 58 test(void) 59 { 60 struct sockaddr_in sock_in; 61 struct hostent *host; 62 char *hostname; 63 int f, i, n; 64 int *buf; 65 66 bzero((char *)&sock_in, sizeof(sock_in)); 67 sock_in.sin_family = AF_INET; 68 f = socket(AF_INET, SOCK_DGRAM, 0); 69 if (f < 0) 70 err(1, "socket"); 71 if (bind(f, (struct sockaddr *)&sock_in, sizeof(sock_in)) < 0) { 72 warn("bind"); 73 return (1); 74 } 75 if (getenv("BLASTHOST") == NULL) 76 hostname = "localhost"; 77 else 78 hostname = getenv("BLASTHOST"); 79 host = gethostbyname(hostname); 80 if (host) { 81 sock_in.sin_family = host->h_addrtype; 82 bcopy(host->h_addr, &sock_in.sin_addr, host->h_length); 83 } else { 84 sock_in.sin_family = AF_INET; 85 sock_in.sin_addr.s_addr = inet_addr(hostname); 86 if (sock_in.sin_addr.s_addr == -1) { 87 err(1, "host: %s", hostname); 88 } 89 } 90 sock_in.sin_port = htons(9); 91 92 if (connect(f, (struct sockaddr *)&sock_in, sizeof(sock_in)) < 0) 93 err(1, "connect"); 94 95 if ((buf = calloc(1, bufsize)) == NULL) 96 err(1, "malloc(%d), %s:%d", bufsize, __FILE__, __LINE__); 97 98 if (op->verbose > 1) 99 printf("udp %s:9 with %d bytes\n", hostname, bufsize); 100 for (i = 0; i < 128 && done_testing == 0; i++) { 101 n = write(f, buf, bufsize); 102 if (n == -1 && errno == ENOBUFS) 103 continue; 104 if (n == -1 && errno == ECONNREFUSED) 105 break; 106 if (n == -1) 107 err(1, "write(%d) #%d", bufsize, i); 108 if (n == 0) break; 109 } 110 free(buf); 111 close(f); 112 return (0); 113 } 114