X-Git-Url: https://gapil.gnulinux.it/gitweb/?a=blobdiff_plain;f=sources%2FTCP_echo.c;h=86b78c2762a1806840bb757680d6ee0c49d7b317;hb=c48d3a056c974898ca18c27a918f2296c18e2c6e;hp=2a6f921dd54a2543b75bc09b01e2f5ac30532632;hpb=58512a223c21f764630ea351c9fac80a25e614fe;p=gapil.git

diff --git a/sources/TCP_echo.c b/sources/TCP_echo.c
index 2a6f921..86b78c2 100644
--- a/sources/TCP_echo.c
+++ b/sources/TCP_echo.c
@@ -1,4 +1,4 @@
-/* TCP_echo1.c
+/* TCP_echo.c
  * 
  * Copyright (C) 2001-2003 Simone Piccardi
  * 
@@ -18,7 +18,7 @@
  */
 /****************************************************************
  *
- * Program ElemEchoTCPClient.c
+ * Program TCP_echo.c
  * Simple TCP client for echo service (port 7)
  *
  * Author: Simone Piccardi
@@ -26,7 +26,7 @@
  *
  * Usage: echo -h give all info's
  *
- * $Id: TCP_echo.c,v 1.2 2003/06/23 18:48:04 piccardi Exp $
+ * $Id: TCP_echo.c,v 1.8 2003/08/17 23:03:44 piccardi Exp $
  *
  ****************************************************************/
 /* 
@@ -37,6 +37,8 @@
 #include <arpa/inet.h>   /* IP addresses conversion utiliites */
 #include <sys/socket.h>  /* socket library */
 #include <stdio.h>	 /* include standard I/O library */
+#include <errno.h>	 /* include error codes */
+#include <string.h>	 /* include erroro strings definitions */
 
 #define MAXLINE 256
 void usage(void);
@@ -114,7 +116,7 @@ int main(int argc, char *argv[])
 	    exit(1);
 	}
     }
-    /* read daytime from server */
+    /* do read/write operations */
     ClientEcho(stdin, sock);
     /* normal exit */
     return 0;
@@ -135,12 +137,27 @@ void usage(void) {
 void ClientEcho(FILE * filein, int socket) 
 {
     char sendbuff[MAXLINE+1], recvbuff[MAXLINE+1];
-    int nread; 
+    int nread, nwrite; 
     while (fgets(sendbuff, MAXLINE, filein) != NULL) {
-	FullWrite(socket, sendbuff, strlen(sendbuff)); 
-	nread = FullRead(socket, recvbuff, strlen(sendbuff));
+	nwrite = FullWrite(socket, sendbuff, strlen(sendbuff)); 
+	if (nwrite < 0) {
+	    printf("Errore in scrittura: %s", strerror(errno));
+	    return;
+	}
+        nread = read(socket, recvbuff, strlen(sendbuff));
+	if (nread < 0) {
+	    printf("Errore in lettura: %s\n", strerror(errno));
+	    return;
+	}
+	if (nread == 0) {
+	    printf("EOF sul socket\n");
+	    return;
+	}
 	recvbuff[nread] = 0;
-	fputs(recvbuff, stdout);
+	if (fputs(recvbuff, stdout) == EOF) {
+	    perror("Errore in scrittura su terminale");
+	    return;
+	}
     }
     return;
 }