150 lines
3.1 KiB
C
150 lines
3.1 KiB
C
/*
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* Copyright 1990-1996 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;
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* the contents of this file may not be disclosed to third parties, copied or
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* duplicated in any form, in whole or in part, without the prior written
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* permission of Silicon Graphics, Inc.
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*
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* RESTRICTED RIGHTS LEGEND:
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* Use, duplication or disclosure by the Government is subject to restrictions
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* as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
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* and Computer Software clause at DFARS 252.227-7013, and/or in similar or
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* successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
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* rights reserved under the Copyright Laws of the United States.
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*/
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/* $Id: udpping.c,v 1.2 1996/10/11 03:36:41 sca Exp $ */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <netinet/in.h>
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#include <netdb.h>
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#include <sys/filio.h>
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#include <stdio.h>
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#include <arpa/inet.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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void error(char *);
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void
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usage(void)
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{
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fprintf(stderr,
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"usage: udpping -h host -p port [-C count] [-n] [-c]\n");
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exit(1);
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}
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char buf[90];
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main(argc, argv)
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int argc;
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char **argv;
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{
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int s, r, sinlen;
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struct sockaddr_in sin, sin2;
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int port = 0;
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struct hostent *hp;
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int on = 1;
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int i = 0;
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extern int optind;
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extern char *optarg;
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int c;
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int conn = 0;
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int nonblock = 0;
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char *host = (char *)0;
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int count = 0x7fffffff;
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while ((c = getopt(argc, argv, "h:p:cnC:")) != EOF) {
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switch (c) {
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case 'h':
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host = optarg;
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break;
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case 'c':
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conn = 1;
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break;
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case 'n':
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nonblock = 1;
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break;
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case 'p':
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port = atoi(optarg);
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break;
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case 'C':
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count = atoi(optarg);
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break;
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case '?':
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default:
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usage();
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}
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}
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if (!host || !port) {
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usage();
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}
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hp = gethostbyname(host);
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if (!hp) {
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#ifndef sun
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herror(host);
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#else
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fprintf(stderr,"udpping: no such host: %s\n",host);
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#endif
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exit(1);
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}
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sin.sin_family = AF_INET;
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sin.sin_port = htons(port);
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memcpy(&sin.sin_addr.s_addr, hp->h_addr_list[0], sizeof(long));
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s = socket(AF_INET, SOCK_DGRAM, 0);
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if (s < 0)
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error("socket");
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r = setsockopt(s, SOL_SOCKET, SO_BROADCAST, &on, sizeof(on));
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if (r < 0)
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error("setsockopt SO_BROADCAST");
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if (conn) {
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r = connect(s, &sin, sizeof(sin));
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if (r < 0)
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error("connect");
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}
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sinlen = sizeof(sin2);
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if (nonblock)
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ioctl(s, FIONBIO, &on);
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while (count--) {
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sprintf(buf, "line %d\n",i++);
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if (conn) {
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r = send(s, buf, (int)strlen(buf), 0);
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} else {
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r = sendto(s, buf, (int)strlen(buf), 0, &sin,
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sizeof(sin));
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}
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if (r < 0 && errno != ENOBUFS)
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error("send");
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if (conn) {
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r = recv(s, buf, sizeof(buf), 0);
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} else {
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r = recvfrom(s, buf, sizeof(buf), 0, &sin2, &sinlen);
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}
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if (r < 0 && errno != EWOULDBLOCK)
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error("recv");
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if (errno == EWOULDBLOCK)
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continue;
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write(1, buf, r);
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if (!conn)
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printf("received from %s:%x\n",
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inet_ntoa(sin2.sin_addr), ntohs(sin2.sin_port));
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}
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exit(0);
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/* NOTREACHED */
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}
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void
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error(char *s)
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{
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perror(s);
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exit(1);
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}
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