#include <Ethernet.h>
#include <SPI.h>
boolean reading = false;

// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = { 0x90, 0xA2, 0xDA, 0x00, 0x49, 0xD6 };
byte ip[] = { 169,254,63,178 };
static char baseurl[]="http://169.254.63.178/";

Server server = Server(80); //port 80

void setup(){
  //Pins 10,11,12 & 13 are used by the ethernet shield
  pinMode(9, OUTPUT);

  Ethernet.begin(mac, ip);
  server.begin();
}

void loop(){
  // listen for incoming clients, and process qequest.
  checkForClient();
}

void checkForClient(){
  Client client = server.available();

  if (client) {

    // an http request ends with a blank line
    boolean currentLineIsBlank = true;
    boolean sentHeader = false;

    while (client.connected()) {
      if (client.available()) {
        if(!sentHeader){
          // send a standard http response header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println();
          client.println("LED switch");
          
          client.println("<form METHOD=get action=\"");
          client.println(baseurl);
          client.println("\">");
          client.println("<input type=hidden name=LED value=0>");
          client.println("<input type=submit value=\"off\"></form>");
          
          client.println("<form METHOD=get action=\"");
          client.println(baseurl);
          client.println("\">");
          client.println("<input type=hidden name=LED value=1>");
          client.println("<input type=submit value=\"on\"></form>");
          sentHeader = true;
        }

        char c = client.read();
        if(reading && c == ' ') reading = false;
        if(c == '?') reading = true; //found the ?, begin reading the info
        if(reading){
          Serial.print(c);
          if(c == '0') {
            digitalWrite(9, LOW);
          }
          if(c == '1') {
            digitalWrite(9, HIGH);
          }
        }
         if (c == '\n' && currentLineIsBlank)  break;
         if (c == '\n') {
          currentLineIsBlank = true;
        }else if (c != '\r') {
          currentLineIsBlank = false;
        }
      }
    }
    delay(1); // give the web browser time to receive the data
    client.stop(); // close the connection:
  } 
}