streamwrite.c revision 1638
11638Srgrimes.\" Copyright (c) 1986, 1993 21638Srgrimes.\" The Regents of the University of California. All rights reserved. 31638Srgrimes.\" 41638Srgrimes.\" Redistribution and use in source and binary forms, with or without 51638Srgrimes.\" modification, are permitted provided that the following conditions 61638Srgrimes.\" are met: 71638Srgrimes.\" 1. Redistributions of source code must retain the above copyright 81638Srgrimes.\" notice, this list of conditions and the following disclaimer. 91638Srgrimes.\" 2. Redistributions in binary form must reproduce the above copyright 101638Srgrimes.\" notice, this list of conditions and the following disclaimer in the 111638Srgrimes.\" documentation and/or other materials provided with the distribution. 121638Srgrimes.\" 3. All advertising materials mentioning features or use of this software 131638Srgrimes.\" must display the following acknowledgement: 141638Srgrimes.\" This product includes software developed by the University of 151638Srgrimes.\" California, Berkeley and its contributors. 161638Srgrimes.\" 4. Neither the name of the University nor the names of its contributors 171638Srgrimes.\" may be used to endorse or promote products derived from this software 181638Srgrimes.\" without specific prior written permission. 191638Srgrimes.\" 201638Srgrimes.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 211638Srgrimes.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 221638Srgrimes.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 231638Srgrimes.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 241638Srgrimes.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 251638Srgrimes.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 261638Srgrimes.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 271638Srgrimes.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 281638Srgrimes.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 291638Srgrimes.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 301638Srgrimes.\" SUCH DAMAGE. 311638Srgrimes.\" 321638Srgrimes.\" @(#)streamwrite.c 8.1 (Berkeley) 6/8/93 331638Srgrimes.\" 341638Srgrimes#include <sys/types.h> 351638Srgrimes#include <sys/socket.h> 361638Srgrimes#include <netinet/in.h> 371638Srgrimes#include <netdb.h> 381638Srgrimes#include <stdio.h> 391638Srgrimes 401638Srgrimes#define DATA "Half a league, half a league . . ." 411638Srgrimes 421638Srgrimes/* 431638Srgrimes * This program creates a socket and initiates a connection with the socket 441638Srgrimes * given in the command line. One message is sent over the connection and 451638Srgrimes * then the socket is closed, ending the connection. The form of the command 461638Srgrimes * line is streamwrite hostname portnumber 471638Srgrimes */ 481638Srgrimes 491638Srgrimesmain(argc, argv) 501638Srgrimes int argc; 511638Srgrimes char *argv[]; 521638Srgrimes{ 531638Srgrimes int sock; 541638Srgrimes struct sockaddr_in server; 551638Srgrimes struct hostent *hp, *gethostbyname(); 561638Srgrimes char buf[1024]; 571638Srgrimes 581638Srgrimes /* Create socket */ 591638Srgrimes sock = socket(AF_INET, SOCK_STREAM, 0); 601638Srgrimes if (sock < 0) { 611638Srgrimes perror("opening stream socket"); 621638Srgrimes exit(1); 631638Srgrimes } 641638Srgrimes /* Connect socket using name specified by command line. */ 651638Srgrimes server.sin_family = AF_INET; 661638Srgrimes hp = gethostbyname(argv[1]); 671638Srgrimes if (hp == 0) { 681638Srgrimes fprintf(stderr, "%s: unknown host\n", argv[1]); 691638Srgrimes exit(2); 701638Srgrimes } 711638Srgrimes bcopy(hp->h_addr, &server.sin_addr, hp->h_length); 721638Srgrimes server.sin_port = htons(atoi(argv[2])); 731638Srgrimes 741638Srgrimes if (connect(sock, &server, sizeof(server)) < 0) { 751638Srgrimes perror("connecting stream socket"); 761638Srgrimes exit(1); 771638Srgrimes } 781638Srgrimes if (write(sock, DATA, sizeof(DATA)) < 0) 791638Srgrimes perror("writing on stream socket"); 801638Srgrimes close(sock); 811638Srgrimes} 82