Arduino/libraries/Ethernet/examples/WebServer/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

 */

#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
};
IPAddress 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):
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 Leonardo only
  }


  // start the Ethernet connection and the server:
  Ethernet.begin(mac, ip);
  server.begin();
  Serial.print("server is at ");
  Serial.println(Ethernet.localIP());
}


void loop() {
  // listen for incoming clients
  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("Refresh: 5");  // refresh the page automatically every 5 sec
          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");
  }
}
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`/*`
Changed names of the Ethernet classes: Client -> EthernetClient, NetClient -> Client, and basic testing performed 2011-08-29 23:36:28 +02:00			`Web Server`
Run new astyle formatter against all the examples 2013-10-21 09:58:40 +02:00
Added comments to WebServer example 2010-07-25 18:27:38 +02:00			`A simple web server that shows the value of the analog input pins.`
Run new astyle formatter against all the examples 2013-10-21 09:58:40 +02:00			`using an Arduino Wiznet Ethernet shield.`

Added comments to WebServer example 2010-07-25 18:27:38 +02:00			`Circuit:`
			`* Ethernet shield attached to pins 10, 11, 12, 13`
			`* Analog inputs attached to pins A0 through A5 (optional)`
Run new astyle formatter against all the examples 2013-10-21 09:58:40 +02:00
Added comments to WebServer example 2010-07-25 18:27:38 +02:00			`created 18 Dec 2009`
			`by David A. Mellis`
Updated all comments for while (!Serial) additions to serial-based examples 2012-04-09 15:51:35 +02:00			`modified 9 Apr 2012`
removing TwitterClient since it does not include OAuth, which is now needed for Twitter logins. Adding TelnetClient examexample. 2010-09-17 15:22:32 +02:00			`by Tom Igoe`
Run new astyle formatter against all the examples 2013-10-21 09:58:40 +02:00
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`*/`

Adding SPI library and revising Ethernet library (Christian Maglie). 2010-08-02 20:59:44 +02:00			`#include <SPI.h>`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`#include <Ethernet.h>`

Added comments to WebServer example 2010-07-25 18:27:38 +02:00			`// Enter a MAC address and IP address for your controller below.`
			`// The IP address will be dependent on your local network:`
Run new astyle formatter against all the examples 2013-10-21 09:58:40 +02:00			`byte mac[] = {`
			`0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED`
			`};`
			`IPAddress ip(192, 168, 1, 177);`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00
Added comments to WebServer example 2010-07-25 18:27:38 +02:00			`// Initialize the Ethernet server library`
Run new astyle formatter against all the examples 2013-10-21 09:58:40 +02:00			`// with the IP address and port you want to use`
Added comments to WebServer example 2010-07-25 18:27:38 +02:00			`// (port 80 is default for HTTP):`
Changed names of the Ethernet classes: Client -> EthernetClient, NetClient -> Client, and basic testing performed 2011-08-29 23:36:28 +02:00			`EthernetServer server(80);`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00
Updated Ethernet WebServer example to give more diagnostic info 2012-03-20 15:37:15 +01:00			`void setup() {`
Run new astyle formatter against all the examples 2013-10-21 09:58:40 +02:00			`// Open serial communications and wait for port to open:`
Updated Ethernet WebServer example to give more diagnostic info 2012-03-20 15:37:15 +01:00			`Serial.begin(9600);`
Run new astyle formatter against all the examples 2013-10-21 09:58:40 +02:00			`while (!Serial) {`
Updated all comments for while (!Serial) additions to serial-based examples 2012-04-09 15:51:35 +02:00			`; // wait for serial port to connect. Needed for Leonardo only`
			`}`

Added Serial port check to all examples using Serial statements in the setup 2012-04-02 15:07:58 +02:00
Added comments to WebServer example 2010-07-25 18:27:38 +02:00			`// start the Ethernet connection and the server:`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`Ethernet.begin(mac, ip);`
			`server.begin();`
Updated Ethernet WebServer example to give more diagnostic info 2012-03-20 15:37:15 +01:00			`Serial.print("server is at ");`
			`Serial.println(Ethernet.localIP());`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`}`

Updated Ethernet WebServer example to give more diagnostic info 2012-03-20 15:37:15 +01:00
			`void loop() {`
Added comments to WebServer example 2010-07-25 18:27:38 +02:00			`// listen for incoming clients`
Changed names of the Ethernet classes: Client -> EthernetClient, NetClient -> Client, and basic testing performed 2011-08-29 23:36:28 +02:00			`EthernetClient client = server.available();`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`if (client) {`
Updated Ethernet WebServer example to give more diagnostic info 2012-03-20 15:37:15 +01:00			`Serial.println("new client");`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`// an http request ends with a blank line`
Added comments to WebServer example 2010-07-25 18:27:38 +02:00			`boolean currentLineIsBlank = true;`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`while (client.connected()) {`
			`if (client.available()) {`
			`char c = client.read();`
Updated Ethernet WebServer example to give more diagnostic info 2012-03-20 15:37:15 +01:00			`Serial.write(c);`
Added comments to WebServer example 2010-07-25 18:27:38 +02:00			`// if you've gotten to the end of the line (received a newline`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`// character) and the line is blank, the http request has ended,`
Added comments to WebServer example 2010-07-25 18:27:38 +02:00			`// so you can send a reply`
			`if (c == '\n' && currentLineIsBlank) {`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`// send a standard http response header`
			`client.println("HTTP/1.1 200 OK");`
			`client.println("Content-Type: text/html");`
WebServer example: Added comments 2013-04-17 11:37:31 +02:00			`client.println("Connection: close"); // the connection will be closed after completion of the response`
Run new astyle formatter against all the examples 2013-10-21 09:58:40 +02:00			`client.println("Refresh: 5"); // refresh the page automatically every 5 sec`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`client.println();`
Updated Ethernet WebServer example to give more diagnostic info 2012-03-20 15:37:15 +01:00			`client.println("<!DOCTYPE HTML>");`
			`client.println("<html>");`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`// output the value of each analog input pin`
removing TwitterClient since it does not include OAuth, which is now needed for Twitter logins. Adding TelnetClient examexample. 2010-09-17 15:22:32 +02:00			`for (int analogChannel = 0; analogChannel < 6; analogChannel++) {`
Updated Ethernet WebServer example to give more diagnostic info 2012-03-20 15:37:15 +01:00			`int sensorReading = analogRead(analogChannel);`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`client.print("analog input ");`
removing TwitterClient since it does not include OAuth, which is now needed for Twitter logins. Adding TelnetClient examexample. 2010-09-17 15:22:32 +02:00			`client.print(analogChannel);`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`client.print(" is ");`
Updated Ethernet WebServer example to give more diagnostic info 2012-03-20 15:37:15 +01:00			`client.print(sensorReading);`
Run new astyle formatter against all the examples 2013-10-21 09:58:40 +02:00			`client.println("<br />");`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`}`
Updated Ethernet WebServer example to give more diagnostic info 2012-03-20 15:37:15 +01:00			`client.println("</html>");`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`break;`
			`}`
			`if (c == '\n') {`
Added comments to WebServer example 2010-07-25 18:27:38 +02:00			`// you're starting a new line`
			`currentLineIsBlank = true;`
Examples: mass code format. See example_formatter.conf 2015-07-06 15:18:33 +02:00			`} else if (c != '\r') {`
Added comments to WebServer example 2010-07-25 18:27:38 +02:00			`// you've gotten a character on the current line`
			`currentLineIsBlank = false;`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`}`
			`}`
			`}`
Fixing bug that made the Ethernet library interfere with pins 8 and 9. Adding a delay(1) to the WebServer example to work with browsers. Removing duplicate Print files from Ethernet library. 2008-12-14 17:55:23 +01:00			`// give the web browser time to receive the data`
			`delay(1);`
Added comments to WebServer example 2010-07-25 18:27:38 +02:00			`// close the connection:`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`client.stop();`
Fixed a typo in the WebServer example. 2013-07-29 19:40:51 +02:00			`Serial.println("client disconnected");`
Renaming ethernet library examples. 2008-09-08 22:05:31 +02:00			`}`
Fix for issue 62, adding DHCP support. New begin() method added to EthernetClass which takes just a MAC address and gets the rest of its configuration information via DHCP. Examples updated to use the IPAddress class and some have been changed to get their config via DHCP. 2011-01-16 21:11:50 +01:00			`}`
Updated Ethernet WebServer example to give more diagnostic info 2012-03-20 15:37:15 +01:00