From 19e73b18a7b0e59807fca19ee19f284944767405 Mon Sep 17 00:00:00 2001
From: Tom Igoe <t.igoe@arduino.cc>
Date: Sun, 25 Jul 2010 16:27:38 +0000
Subject: [PATCH] Added comments to WebServer example

---
 .../Ethernet/examples/WebServer/WebServer.pde | 49 +++++++++++++------
 1 file changed, 34 insertions(+), 15 deletions(-)

diff --git a/libraries/Ethernet/examples/WebServer/WebServer.pde b/libraries/Ethernet/examples/WebServer/WebServer.pde
index b337a8ec3..8251117b9 100644
--- a/libraries/Ethernet/examples/WebServer/WebServer.pde
+++ b/libraries/Ethernet/examples/WebServer/WebServer.pde
@@ -1,40 +1,57 @@
 /*
- * Web Server
- *
- * A simple web server that shows the value of the analog input pins.
+  Web  Server
+ 
+ A simple web server that shows the value of the analog input pins.
+ using an Arduino Wiznet Ethernet shield. 
+ 
+ Circuit:
+ * Ethernet shield attached to pins 10, 11, 12, 13
+ * Analog inputs attached to pins A0 through A5 (optional)
+ 
+ created 18 Dec 2009
+ by David A. Mellis
+ 
  */
 
+
 #include <Ethernet.h>
 
+// Enter a MAC address and IP address for your controller below.
+// The IP address will be dependent on your local network:
 byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
-byte ip[] = { 10, 0, 0, 177 };
+byte ip[] = { 192,168,1, 177 };
 
+// Initialize the Ethernet server library
+// with the IP address and port you want to use 
+// (port 80 is default for HTTP):
 Server server(80);
 
 void setup()
 {
+  // start the Ethernet connection and the server:
   Ethernet.begin(mac, ip);
   server.begin();
 }
 
 void loop()
 {
+  // listen for incoming clients
   Client client = server.available();
   if (client) {
     // an http request ends with a blank line
-    boolean current_line_is_blank = true;
+    boolean currentLineIsBlank = true;
     while (client.connected()) {
       if (client.available()) {
         char c = client.read();
-        // if we've gotten to the end of the line (received a newline
+        // if you've gotten to the end of the line (received a newline
         // character) and the line is blank, the http request has ended,
-        // so we can send a reply
-        if (c == '\n' && current_line_is_blank) {
+        // so you can send a reply
+        if (c == '\n' && currentLineIsBlank) {
           // send a standard http response header
           client.println("HTTP/1.1 200 OK");
           client.println("Content-Type: text/html");
           client.println();
-          
+
           // output the value of each analog input pin
           for (int i = 0; i < 6; i++) {
             client.print("analog input ");
@@ -46,16 +63,18 @@ void loop()
           break;
         }
         if (c == '\n') {
-          // we're starting a new line
-          current_line_is_blank = true;
-        } else if (c != '\r') {
-          // we've gotten a character on the current line
-          current_line_is_blank = false;
+          // you're starting a new line
+          currentLineIsBlank = true;
+        } 
+        else if (c != '\r') {
+          // you've gotten a character on the current line
+          currentLineIsBlank = false;
         }
       }
     }
     // give the web browser time to receive the data
     delay(1);
+    // close the connection:
     client.stop();
   }
-}
+}
\ No newline at end of file