#include <sys/types.h> #include <sys/socket.h> #include <sys/un.h> #include <stdio.h> #define DATA "Half a league, half a league . . ." /* * This program connects to the socket named in the command line and sends a * one line message to that socket. The form of the command line is * ustreamwrite pathname */ main(argc, argv) int argc; char *argv[]; { int sock; struct sockaddr_un server; char buf[1024]; /* Create socket */ sock = socket(AF_UNIX, SOCK_STREAM, 0); if (sock < 0) { perror("opening stream socket"); exit(1); } /* Connect socket using name specified by command line. */ server.sun_family = AF_UNIX; strcpy(server.sun_path, argv[1]); if (connect(sock, &server, sizeof(struct sockaddr_un)) < 0) { close(sock); perror("connecting stream socket"); exit(1); } if (write(sock, DATA, sizeof(DATA)) < 0) perror("writing on stream socket"); }