cedced19/webserver.ino

## webserver.ino
/*
  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
 modified 9 Apr 2012
 by Tom Igoe
 modified 02 Sept 2015
 by Arturo Guadalupi

 */

#include <SPI.h>
#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
};

// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(80);

void setup() {
  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }


  // start the Ethernet connection and the server:
  Ethernet.begin(mac);
  server.begin();
  printIPAddress()
}


void loop() {
  // listen for incoming clients
  switch (Ethernet.maintain())
  {
    case 1:
      //renewed fail
      Serial.println("Error: renewed fail");
      break;

    case 2:
      //renewed success
      Serial.println("Renewed success");

      //print your local IP address:
      printIPAddress();
      break;

    case 3:
      //rebind fail
      Serial.println("Error: rebind fail");
      break;

    case 4:
      //rebind success
      Serial.println("Rebind success");

      //print your local IP address:
      printIPAddress();
      break;

    default:
      //nothing happened
      break;

  }
  EthernetClient client = server.available();
  if (client) {
    Serial.println("new client");
    // an http request ends with a blank line
    boolean currentLineIsBlank = true;
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        Serial.write(c);
        // 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 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("Connection: close");  // the connection will be closed after completion of the response
          client.println();
          client.println("<!DOCTYPE HTML>");
          client.println("<html>");
          // output the value of each analog input pin
          for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
            int sensorReading = analogRead(analogChannel);
            client.print("analog input ");
            client.print(analogChannel);
            client.print(" is ");
            client.print(sensorReading);
            client.println("<br />");
          }
          client.println("</html>");
          break;
        }
        if (c == '\n') {
          // 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();
    Serial.println("client disconnected");
  }
}

void printIPAddress()
{
  Serial.print("My IP address: ");
  for (byte thisByte = 0; thisByte < 4; thisByte++) {
    // print the value of each byte of the IP address:
    Serial.print(Ethernet.localIP()[thisByte], DEC);
    Serial.print(".");
  }

  Serial.println();
}
	/*
	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
	modified 9 Apr 2012
	by Tom Igoe
	modified 02 Sept 2015
	by Arturo Guadalupi

	*/

	#include <SPI.h>
	#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
	};

	// Initialize the Ethernet server library
	// with the IP address and port you want to use
	// (port 80 is default for HTTP):
	EthernetServer server(80);

	void setup() {
	// Open serial communications and wait for port to open:
	Serial.begin(9600);
	while (!Serial) {
	; // wait for serial port to connect. Needed for native USB port only
	}


	// start the Ethernet connection and the server:
	Ethernet.begin(mac);
	server.begin();
	printIPAddress()
	}


	void loop() {
	// listen for incoming clients
	switch (Ethernet.maintain())
	{
	case 1:
	//renewed fail
	Serial.println("Error: renewed fail");
	break;

	case 2:
	//renewed success
	Serial.println("Renewed success");

	//print your local IP address:
	printIPAddress();
	break;

	case 3:
	//rebind fail
	Serial.println("Error: rebind fail");
	break;

	case 4:
	//rebind success
	Serial.println("Rebind success");

	//print your local IP address:
	printIPAddress();
	break;

	default:
	//nothing happened
	break;

	}
	EthernetClient client = server.available();
	if (client) {
	Serial.println("new client");
	// an http request ends with a blank line
	boolean currentLineIsBlank = true;
	while (client.connected()) {
	if (client.available()) {
	char c = client.read();
	Serial.write(c);
	// 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 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("Connection: close"); // the connection will be closed after completion of the response
	client.println();
	client.println("<!DOCTYPE HTML>");
	client.println("<html>");
	// output the value of each analog input pin
	for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
	int sensorReading = analogRead(analogChannel);
	client.print("analog input ");
	client.print(analogChannel);
	client.print(" is ");
	client.print(sensorReading);
	client.println("<br />");
	}
	client.println("</html>");
	break;
	}
	if (c == '\n') {
	// 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();
	Serial.println("client disconnected");
	}
	}

	void printIPAddress()
	{
	Serial.print("My IP address: ");
	for (byte thisByte = 0; thisByte < 4; thisByte++) {
	// print the value of each byte of the IP address:
	Serial.print(Ethernet.localIP()[thisByte], DEC);
	Serial.print(".");
	}

	Serial.println();
	}