1*075022b3Sagc .\" $NetBSD: streamwrite.c,v 1.3 2003/08/07 10:30:50 agc Exp $ 26d400d56Sperry .\" 3d9158b13Scgd .\" Copyright (c) 1986, 1993 4d9158b13Scgd .\" The Regents of the University of California. All rights reserved. 5d9158b13Scgd .\" 6d9158b13Scgd .\" Redistribution and use in source and binary forms, with or without 7d9158b13Scgd .\" modification, are permitted provided that the following conditions 8d9158b13Scgd .\" are met: 9d9158b13Scgd .\" 1. Redistributions of source code must retain the above copyright 10d9158b13Scgd .\" notice, this list of conditions and the following disclaimer. 11d9158b13Scgd .\" 2. Redistributions in binary form must reproduce the above copyright 12d9158b13Scgd .\" notice, this list of conditions and the following disclaimer in the 13d9158b13Scgd .\" documentation and/or other materials provided with the distribution. 14*075022b3Sagc .\" 3. Neither the name of the University nor the names of its contributors 15d9158b13Scgd .\" may be used to endorse or promote products derived from this software 16d9158b13Scgd .\" without specific prior written permission. 17d9158b13Scgd .\" 18d9158b13Scgd .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19d9158b13Scgd .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20d9158b13Scgd .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21d9158b13Scgd .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22d9158b13Scgd .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23d9158b13Scgd .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24d9158b13Scgd .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25d9158b13Scgd .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26d9158b13Scgd .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27d9158b13Scgd .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28d9158b13Scgd .\" SUCH DAMAGE. 29d9158b13Scgd .\" 30d9158b13Scgd .\" @(#)streamwrite.c 8.1 (Berkeley) 6/8/93 31d9158b13Scgd .\" 32d9158b13Scgd #include <sys/types.h> 33d9158b13Scgd #include <sys/socket.h> 34d9158b13Scgd #include <netinet/in.h> 35d9158b13Scgd #include <netdb.h> 36d9158b13Scgd #include <stdio.h> 37d9158b13Scgd 38d9158b13Scgd #define DATA "Half a league, half a league . . ." 39d9158b13Scgd 40d9158b13Scgd /* 41d9158b13Scgd * This program creates a socket and initiates a connection with the socket 42d9158b13Scgd * given in the command line. One message is sent over the connection and 43d9158b13Scgd * then the socket is closed, ending the connection. The form of the command 44d9158b13Scgd * line is streamwrite hostname portnumber 45d9158b13Scgd */ 46d9158b13Scgd 47d9158b13Scgd main(argc, argv) 48d9158b13Scgd int argc; 49d9158b13Scgd char *argv[]; 50d9158b13Scgd { 51d9158b13Scgd int sock; 52d9158b13Scgd struct sockaddr_in server; 53d9158b13Scgd struct hostent *hp, *gethostbyname(); 54d9158b13Scgd char buf[1024]; 55d9158b13Scgd 56d9158b13Scgd /* Create socket */ 57d9158b13Scgd sock = socket(AF_INET, SOCK_STREAM, 0); 58d9158b13Scgd if (sock < 0) { 59d9158b13Scgd perror("opening stream socket"); 60d9158b13Scgd exit(1); 61d9158b13Scgd } 62d9158b13Scgd /* Connect socket using name specified by command line. */ 63d9158b13Scgd server.sin_family = AF_INET; 64d9158b13Scgd hp = gethostbyname(argv[1]); 65d9158b13Scgd if (hp == 0) { 66d9158b13Scgd fprintf(stderr, "%s: unknown host\n", argv[1]); 67d9158b13Scgd exit(2); 68d9158b13Scgd } 69d9158b13Scgd bcopy(hp->h_addr, &server.sin_addr, hp->h_length); 70d9158b13Scgd server.sin_port = htons(atoi(argv[2])); 71d9158b13Scgd 72d9158b13Scgd if (connect(sock, &server, sizeof(server)) < 0) { 73d9158b13Scgd perror("connecting stream socket"); 74d9158b13Scgd exit(1); 75d9158b13Scgd } 76d9158b13Scgd if (write(sock, DATA, sizeof(DATA)) < 0) 77d9158b13Scgd perror("writing on stream socket"); 78d9158b13Scgd close(sock); 79d9158b13Scgd } 80