*
* Usage: echo -h give all info's
*
- * $Id: TCP_echo.c,v 1.10 2003/10/19 10:38:27 piccardi Exp $
+ * $Id: TCP_echo.c,v 1.11 2003/10/20 22:44:16 piccardi Exp $
*
****************************************************************/
/*
#include <errno.h> /* include error codes */
#include <string.h> /* include erroro strings definitions */
+#include "Gapil.h"
#include "macros.h"
#define MAXLINE 256
*/
int sock, i;
int reset = 0;
- struct sockaddr_in serv_add;
struct linger ling;
/*
* Input section: decode parameters passed in the calling
* Main code beginning
*
* ***********************************************************/
- /* create socket */
- if ( (sock = 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, (struct sockaddr *)&serv_add, sizeof(serv_add)) < 0) {
- perror("Connection error");
+ /* call sockaddr to get a connected socket */
+ if ( (sock = sockconn(argv[optind], "echo", 6, SOCK_STREAM)) < 0) {
+ if (errno) perror("Socket creation error");
return 1;
}
/* check if resetting on close is required */
int nread, nwrite;
int maxfd;
fd_set fset;
+ int eof = 0;
/* initialize file descriptor set */
FD_ZERO(&fset);
maxfd = max(fileno(filein), socket) + 1;
while (1) {
FD_SET(socket, &fset); /* set for the socket */
- FD_SET(fileno(filein), &fset); /* set for the standard input */
+ if (eof == 0) {
+ FD_SET(fileno(filein), &fset); /* set for the standard input */
+ }
select(maxfd, &fset, NULL, NULL, NULL); /* wait for read ready */
if (FD_ISSET(fileno(filein), &fset)) { /* if ready on stdin */
if (fgets(sendbuff, MAXLINE, filein) == NULL) { /* if no input */
- return; /* we stopped client */
+ eof = 1; /* EOF on input */
+ shutdown(socket, SHUT_WR); /* close write half */
+ FD_CLR(fileno(filein), &fset); /* no more interest on stdin */
} else { /* else we have to write to socket */
nwrite = FullWrite(socket, sendbuff, strlen(sendbuff));
if (nwrite < 0) { /* on error stop */
return;
}
if (nread == 0) { /* server closed connection, stop */
- printf("EOF sul socket\n");
- return;
+ if (eof == 1) {
+ return;
+ } else {
+ printf("EOF prematuro sul socket\n");
+ return;
+ }
}
recvbuff[nread] = 0; /* else read is ok, write on stdout */
if (fputs(recvbuff, stdout) == EOF) {