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/*
Copyright (C) 2000-2003 Ulric Eriksson <ulric@siag.nu>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#define MAXBUF 1024
int main(int argc, char **argv)
{
int sk;
struct sockaddr_in client, server;
struct hostent *hp;
char buf[MAXBUF];
int n;
if (argc < 3) {
printf("Usage: %s server_ip server_port [my_ip]\n", argv[0]);
exit(0);
}
if ((sk = socket(PF_INET, SOCK_DGRAM, 0)) < 0) {
printf("Problem creating socket\n");
exit(1);
}
if (argc > 3) { /* set local address */
hp = gethostbyname(argv[3]);
if (hp == NULL) {
fprintf(stderr, "Bogus local address %s\n", argv[3]);
exit(1);
}
memcpy(&client.sin_addr.s_addr, hp->h_addr, hp->h_length);
client.sin_port = 0;
if (bind(sk, (struct sockaddr *)&client, sizeof client) < 0) {
fprintf(stderr, "bind failure\n");
exit(1);
}
}
server.sin_family = AF_INET;
hp = gethostbyname(argv[1]);
if (hp == NULL) {
fprintf(stderr, "Bogus server address %s\n", argv[1]);
exit(1);
}
memcpy(&server.sin_addr.s_addr, hp->h_addr, hp->h_length);
server.sin_port = htons(atoi(argv[2]));
while (fgets(buf, sizeof buf, stdin)) {
n = sendto(sk, buf, strlen(buf), 0,
(struct sockaddr *) &server, sizeof server);
if (n < 0) {
perror("Problem sending data");
}
}
return 0;
}
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