X-Git-Url: https://gapil.gnulinux.it/gitweb/?p=gapil.git;a=blobdiff_plain;f=sources%2FTCP_echod_first.c;h=31d0ded800ef17cb50ce76f02e6c16d9c5192415;hp=55fd5c6981842e28f47d614c293d07c45170d7ae;hb=04c68576a3be5ccfda8faf2030d4cbc2997c29fa;hpb=3e8003adb1396080659ef5d34896eb2f573be6cd

diff --git a/sources/TCP_echod_first.c b/sources/TCP_echod_first.c
index 55fd5c6..31d0ded 100644
--- a/sources/TCP_echod_first.c
+++ b/sources/TCP_echod_first.c
@@ -1,4 +1,4 @@
-/* TCP_echod.c
+/* TCP_echod_first.c
  * 
  * Copyright (C) 2001-2003 Simone Piccardi
  * 
@@ -20,32 +20,35 @@
  *
  * Program echod 
  * Elementary TCP server for echo service (port 7)
+ * First version
  *
  * Author: Simone Piccardi
  * Jun. 2001
  *
  * Usage: echod -h give all info
  *
- * $Id: TCP_echod_first.c,v 1.1 2003/05/06 14:05:12 piccardi Exp $ 
- *
  ****************************************************************/
 /* 
  * Include needed headers
  */
-#include <sys/types.h>   /* predefined types */
-#include <unistd.h>      /* include unix standard library */
-#include <arpa/inet.h>   /* IP addresses conversion utiliites */
-#include <sys/socket.h>  /* socket library */
-#include <stdio.h>	 /* include standard I/O library */
-#include <time.h>
+#include <sys/types.h>   /* primitive system data types */
+#include <unistd.h>      /* unix standard library */
+#include <arpa/inet.h>   /* IP addresses conversion utilities */
+#include <sys/socket.h>  /* socket constants, types and functions */
+#include <stdio.h>	 /* standard I/O library */
+#include <time.h>        /* date and time constants, types and functions */
 #include <syslog.h>      /* syslog system functions */
-#include <signal.h>      /* signal functions */
+#include <signal.h>      /* signal constants, types and functions */
+#include <errno.h>       /* error definitions and routines */
+#include <string.h>      /* C strings library */
+#include <stdlib.h>      /* C standard library */
+
 #include "Gapil.h"
 
 #define BACKLOG 10
 #define MAXLINE 256
-int demonize  = 1;  /* daemon use option */
-int debugging = 0;  /* debug info printing option */
+int demonize  = 1;  /* daemon use option: default is daemon */
+int debugging = 0;  /* debug info printing option: default is no debug */
 /* Subroutines declaration */
 void usage(void);
 void ServEcho(int sockfd);
@@ -179,14 +182,8 @@ void ServEcho(int sockfd) {
     /* main loop, reading 0 char means client close connection */
     while ( (nread = read(sockfd, buffer, MAXLINE)) != 0) {
 	nwrite = FullWrite(sockfd, buffer, nread);
-	if (debugging) {
-	    buffer[nread] = 0;
-	    snprintf(debug, MAXLINE+20, "Letti %d byte, %s", nread, buffer);
-	    if (demonize) {          /* go daemon */
-		syslog(LOG_DEBUG, debug);
-	    } else {
-		printf("%s", debug);
-	    }
+	if (nwrite) {
+	    PrintErr("write error");
 	}
     }
     return;
@@ -195,8 +192,8 @@ void ServEcho(int sockfd) {
  * routine to print error on stout or syslog
  */
 void PrintErr(char * error) {
-    if (demonize) {          /* go daemon */
-	syslog(LOG_ERR, error);
+    if (demonize) {                       /* daemon mode */
+	syslog(LOG_ERR, "%s: %m", error); /* log string and error message */
     } else {
 	perror(error);
     }