1*27700Smckusick .\" Copyright (c) 1986 Regents of the University of California. 2*27700Smckusick .\" All rights reserved. The Berkeley software License Agreement 3*27700Smckusick .\" specifies the terms and conditions for redistribution. 4*27700Smckusick .\" 5*27700Smckusick .\" @(#)streamwrite.c 6.1 (Berkeley) 05/04/86 6*27700Smckusick .\" 7*27700Smckusick #include <sys/types.h> 8*27700Smckusick #include <sys/socket.h> 9*27700Smckusick #include <netinet/in.h> 10*27700Smckusick #include <netdb.h> 11*27700Smckusick #include <stdio.h> 12*27700Smckusick 13*27700Smckusick #define M_SOCKET 0x00000001 14*27700Smckusick #define DATA "Half a league, half a league . . ." 15*27700Smckusick 16*27700Smckusick /* 17*27700Smckusick * This program creates a socket and initiates a connection with the socket 18*27700Smckusick * given in the command line. One message is sent over the connection and 19*27700Smckusick * then the socket is closed, ending the connection. The form of the command 20*27700Smckusick * line is streamwrite hostname portnumber 21*27700Smckusick */ 22*27700Smckusick 23*27700Smckusick main(argc, argv) 24*27700Smckusick int argc; 25*27700Smckusick char **argv; 26*27700Smckusick { 27*27700Smckusick int sock; 28*27700Smckusick struct sockaddr_in server; 29*27700Smckusick struct hostent *hp, *gethostbyname(); 30*27700Smckusick char buf[1024]; 31*27700Smckusick 32*27700Smckusick /* Create socket */ 33*27700Smckusick sock = socket(AF_INET, SOCK_STREAM, 0); 34*27700Smckusick if (sock < 0) { 35*27700Smckusick perror("opening stream socket"); 36*27700Smckusick exit(0); 37*27700Smckusick } 38*27700Smckusick /* Connect socket using name specified by command line. */ 39*27700Smckusick server.sin_family = AF_INET; 40*27700Smckusick hp = gethostbyname(argv[1]); 41*27700Smckusick bcopy(hp->h_addr, &(server.sin_addr.s_addr), hp->h_length); 42*27700Smckusick server.sin_port = htons(atoi(argv[2])); 43*27700Smckusick 44*27700Smckusick if (connect(sock, &server, sizeof(server)) < 0) { 45*27700Smckusick close(sock); 46*27700Smckusick perror("connecting stream socket"); 47*27700Smckusick exit(0); 48*27700Smckusick } 49*27700Smckusick if (write(sock, DATA, sizeof(DATA)) < 0) 50*27700Smckusick perror("writing on stream socket"); 51*27700Smckusick close(sock); 52*27700Smckusick } 53