#include	<stdio.h>
#include	<sys/types.h>
#include	<sys/socket.h>
#include	<sys/un.h>

#define	BUFLEN 500

main()
{
	int	sock;
	struct sockaddr_un addr;
	socklen_t addrlen;
	int	l;
	char	buf[BUFLEN];
	struct sockaddr_un caller;
	int	len;
	char	sockname[] = "/tmp/xyz";

	sock = socket(PF_UNIX, SOCK_DGRAM, 0);
	if ( sock == -1 ){ perror("socket"); exit(1); }

	addr.sun_family = AF_UNIX;
	strcpy(addr.sun_path, sockname);
	addrlen = strlen(sockname) + sizeof(addr.sun_family);

	if ( bind(sock, (struct sockaddr *) &addr, addrlen) == -1 ){
		perror("bind");
		exit(1);
	}

	while(1)
	{
		l = read(sock, buf, BUFLEN);
		if ( l == -1 )
			perror("read");
		if( write(sock, "thanks\n", 7) == -1 )
			perror("write to socket");
		write(1,buf,l);
	}
}