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/******************************************************************************
* Test program for reading console lines from DOM0 port 666.
*/
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(void)
{
unsigned char buf[208], abuf[32];
struct sockaddr_in addr, from;
int fromlen = sizeof(from);
int len, fd = socket(PF_INET, SOCK_DGRAM, 0);
if ( fd < 0 )
{
fprintf(stderr, "could not open datagram socket\n");
return -1;
}
memset(&addr, 0, sizeof(addr));
addr.sin_addr.s_addr = htonl(0xa9fe0100); /* 169.254.1.0 */
addr.sin_port = htons(666);
addr.sin_family = AF_INET;
if ( bind(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0 )
{
fprintf(stderr, "could not bind to local address and port\n");
return -1;
}
while ( (len = recvfrom(fd, buf, sizeof(buf), 0,
(struct sockaddr *)&from, &fromlen))
>= 0 )
{
#if 0
printf("%d-byte message from %s:%d --\n", len,
inet_ntop(AF_INET, &from.sin_addr, abuf, sizeof(abuf)),
ntohs(from.sin_port));
#endif
/* For sanity, clean up the string's tail. */
if ( buf[len-1] != '\n' ) { buf[len] = '\n'; len++; }
buf[len] = '\0';
printf("[%d] %s", ntohs(from.sin_port),buf);
fromlen = sizeof(from);
}
return 0;
}
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