/* * Copyright (c) 1986 The Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms are permitted * provided that the above copyright notice and this paragraph are * duplicated in all such forms and that any documentation, * advertising materials, and other materials related to such * distribution and use acknowledge that the software was developed * by the University of California, Berkeley. The name of the * University may not be used to endorse or promote products derived * from this software without specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #ifndef lint char copyright[] = "@(#) Copyright (c) 1986 The Regents of the University of California.\n\ All rights reserved.\n"; #endif /* not lint */ #ifndef lint static char sccsid[] = "@(#)streamwrite.c 6.3 (Berkeley) 03/07/89"; #endif /* not lint */ #include #include #include #include #include #define DATA "Half a league, half a league . . ." /* * This program creates a socket and initiates a connection with the socket * given in the command line. One message is sent over the connection and * then the socket is closed, ending the connection. The form of the command * line is streamwrite hostname portnumber */ main(argc, argv) int argc; char *argv[]; { int sock; struct sockaddr_in server; struct hostent *hp, *gethostbyname(); char buf[1024]; /* Create socket */ sock = socket(AF_INET, SOCK_STREAM, 0); if (sock < 0) { perror("opening stream socket"); exit(1); } /* Connect socket using name specified by command line. */ server.sin_family = AF_INET; hp = gethostbyname(argv[1]); if (hp == 0) { fprintf(stderr, "%s: unknown host\n", argv[1]); exit(2); } bcopy(hp->h_addr, &server.sin_addr, hp->h_length); server.sin_port = htons(atoi(argv[2])); if (connect(sock, &server, sizeof(server)) < 0) { perror("connecting stream socket"); exit(1); } if (write(sock, DATA, sizeof(DATA)) < 0) perror("writing on stream socket"); close(sock); }