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

int main(int argc, char **argv) {
	int s;
	struct sockaddr_un addr;
	char buf[4096];
	int r;

	if ((s = socket(AF_UNIX, SOCK_SEQPACKET, 0)) < 0) {
		perror("socket");
		exit(EXIT_FAILURE);
	}

	memset(&addr, 0, sizeof(struct sockaddr_un));
	addr.sun_family = AF_UNIX;
	unlink("/tmp/sock-test");
	strcpy(addr.sun_path, "/tmp/sock-test");
	if (bind(s, (struct sockaddr *)&addr, sizeof(addr.sun_path))) {
		perror("bind");
		exit(EXIT_FAILURE);
	}

	if (listen(s, 1) == -1) {
		perror("listen");
		exit(EXIT_FAILURE);
	}

	/* before this recv below, we should have an accept call
	  (wait for connection):
	   struct sockaddr_un raddr;
	   int lraddr = sizeof(raddr);
           sock = accept(s, (struct sockaddr *)&addr, &lraddr)) 
	   
	   then:
	   recv(sock...)
	*/

	r = recv(s, buf, 4096, 0);
	if (r < 0) {
		perror("recv");
		printf("errno: %d\n", errno);
	}
	close(s);
	unlink("/tmp/sock-test");
}