From d71832779a9507989908bf2d524db6809745a04f Mon Sep 17 00:00:00 2001 From: Simone Piccardi Date: Thu, 19 Jun 2003 12:08:11 +0000 Subject: [PATCH] Aggiustamento nomi e file sorgente --- elemtcp.tex | 4 +- listati/{TCP_echo1.c => TCP_echo_first.c} | 0 sources/Makefile | 2 +- sources/TCP_echo_first.c | 129 ++++++++++++++++++++++ 4 files changed, 132 insertions(+), 3 deletions(-) rename listati/{TCP_echo1.c => TCP_echo_first.c} (100%) create mode 100644 sources/TCP_echo_first.c diff --git a/elemtcp.tex b/elemtcp.tex index cfc4c85..29fa845 100644 --- a/elemtcp.tex +++ b/elemtcp.tex @@ -1635,7 +1635,7 @@ output. \label{sec:TCP_echo_client} Il codice della prima versione del client per il servizio \textit{echo}, -disponibile nel file \file{TCP\_echo1.c}, è riportato in +disponibile nel file \file{TCP\_echo\_first.c}, è riportato in \figref{fig:TCP_echo_client_1}. Esso ricalca la struttura del precedente client per il servizio \textit{daytime} (vedi \secref{sec:TCP_daytime_client}), e la prima parte (\texttt{\small 10--27}) è @@ -1644,7 +1644,7 @@ sostanzialmente identica, a parte l'uso di una porta diversa. \begin{figure}[!htb] \footnotesize \centering \begin{minipage}[c]{15.6 cm} - \includecodesample{listati/TCP_echo1.c} + \includecodesample{listati/TCP_echo_first.c} \end{minipage} \normalsize \caption{Codice della prima versione del client \textit{echo}.} diff --git a/listati/TCP_echo1.c b/listati/TCP_echo_first.c similarity index 100% rename from listati/TCP_echo1.c rename to listati/TCP_echo_first.c diff --git a/sources/Makefile b/sources/Makefile index b466902..6ff1fcb 100644 --- a/sources/Makefile +++ b/sources/Makefile @@ -66,7 +66,7 @@ forktest: ForkTest.c errcode: ErrCode.c $(CC) $(CFLAGJ) $^ -o $@ -echo: TCP_echo1.c +echo: TCP_echo_first.c $(CC) $(CFLAGJ) $^ -o $@ echod: TCP_echod.c diff --git a/sources/TCP_echo_first.c b/sources/TCP_echo_first.c new file mode 100644 index 0000000..626d196 --- /dev/null +++ b/sources/TCP_echo_first.c @@ -0,0 +1,129 @@ +/* TCP_echo1.c + * + * Copyright (C) 2001 Simone Piccardi + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or (at + * your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +/**************************************************************** + * + * Program ElemEchoTCPClient.c + * Simple TCP client for echo service (port 7) + * + * Author: Simone Piccardi + * Jun. 2001 + * + * Usage: echo -h give all info's + * + * $Id: TCP_echo_first.c,v 1.1 2003/06/19 12:08:11 piccardi Exp $ + * + ****************************************************************/ +/* + * Include needed headers + */ +#include /* predefined types */ +#include /* include unix standard library */ +#include /* IP addresses conversion utiliites */ +#include /* socket library */ +#include /* include standard I/O library */ + +#define MAXLINE 256 +void usage(void); +void ClientEcho(FILE * filein, int socket); + +/* Program begin */ +int main(int argc, char *argv[]) +{ +/* + * Variables definition + */ + int sock_fd, i; + struct sockaddr_in serv_add; + /* + * Input section: decode parameters passed in the calling + * Use getopt function + */ + opterr = 0; /* don't want writing to stderr */ + while ( (i = getopt(argc, argv, "h")) != -1) { + switch (i) { + /* + * Handling options + */ + case 'h': + printf("Wrong -h option use\n"); + usage(); + return(1); + break; + case '?': /* unrecognized options */ + printf("Unrecognized options -%c\n",optopt); + usage(); + default: /* should not reached */ + usage(); + } + } + /* *********************************************************** + * + * Options processing completed + * + * Main code beginning + * + * ***********************************************************/ + /* create socket */ + if ( (sock_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) { + perror("Socket creation error"); + return 1; + } + /* initialize address */ + memset((void *) &serv_add, 0, sizeof(serv_add)); /* clear server address */ + serv_add.sin_family = AF_INET; /* address type is INET */ + serv_add.sin_port = htons(7); /* echo port is 7 */ + /* build address using inet_pton */ + if ( (inet_pton(AF_INET, argv[optind], &serv_add.sin_addr)) <= 0) { + perror("Address creation error"); + return 1; + } + /* extablish connection */ + if (connect(sock_fd, (struct sockaddr *)&serv_add, sizeof(serv_add)) < 0) { + perror("Connection error"); + return 1; + } + /* read daytime from server */ + ClientEcho(stdin, sock_fd); + /* normal exit */ + return 0; +} +/* + * routine to print usage info and exit + */ +void usage(void) { + printf("Take daytime from a remote host \n"); + printf("Usage:\n"); + printf(" daytime [-h] [-v] [host in dotted decimal form] \n"); + printf(" -v set verbosity on\n"); + printf(" -h print this help\n"); + exit(1); +} + +void ClientEcho(FILE * filein, int socket) +{ + char sendbuff[MAXLINE+1], recvbuff[MAXLINE+1]; + int nread; + while (fgets(sendbuff, MAXLINE, filein) != NULL) { + FullWrite(socket, sendbuff, strlen(sendbuff)); + nread = FullRead(socket, recvbuff, strlen(sendbuff)); + recvbuff[nread] = 0; + fputs(recvbuff, stdout); + } + return; +} -- 2.30.2