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

main()
{
	int	sock;
	struct sockaddr_un addr;
	socklen_t addrlen;
	char	sockname[] = "/tmp/xyz";
	char	buf[100];
	int	l;

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

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

	if ( connect(sock, &addr, addrlen) == -1 )
		{ perror("connect"); exit(2); }
	if ( write(sock,"hello\n",6) == -1 )
		{ perror("write"); exit(2); }
	l = read(sock, buf, 100);
	if ( l == -1 )
		{ perror("read"); exit(2); }
	write(1, buf, l);
}