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+/*
+ Web client
+
+ This sketch connects to a website (http://www.google.com)
+ using an Arduino Wiznet Ethernet shield.
+
+ Circuit:
+ * Ethernet shield attached to pins 10, 11, 12, 13
+
+ created 18 Dec 2009
+ by David A. Mellis
+ modified 9 Apr 2012
+ by Tom Igoe, based on work by Adrian McEwen
+
+ */
+
+#include <SPI.h>
+#include <Ethernet.h>
+
+// Enter a MAC address for your controller below.
+// Newer Ethernet shields have a MAC address printed on a sticker on the shield
+byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
+// if you don't want to use DNS (and reduce your sketch size)
+// use the numeric IP instead of the name for the server:
+//IPAddress server(74,125,232,128); // numeric IP for Google (no DNS)
+char server[] = "www.google.com"; // name address for Google (using DNS)
+
+// Set the static IP address to use if the DHCP fails to assign
+IPAddress ip(192,168,0,177);
+
+// Initialize the Ethernet client library
+// with the IP address and port of the server
+// that you want to connect to (port 80 is default for HTTP):
+EthernetClient client;
+
+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:
+ if (Ethernet.begin(mac) == 0) {
+ Serial.println("Failed to configure Ethernet using DHCP");
+ // no point in carrying on, so do nothing forevermore:
+ // try to congifure using IP address instead of DHCP:
+ Ethernet.begin(mac, ip);
+ }
+ // give the Ethernet shield a second to initialize:
+ delay(1000);
+ Serial.println("connecting...");
+
+ // if you get a connection, report back via serial:
+ if (client.connect(server, 80)) {
+ Serial.println("connected");
+ // Make a HTTP request:
+ client.println("GET /search?q=arduino HTTP/1.1");
+ client.println("Host: www.google.com");
+ client.println("Connection: close");
+ client.println();
+ }
+ else {
+ // kf you didn't get a connection to the server:
+ Serial.println("connection failed");
+ }
+}
+
+void loop()
+{
+ // if there are incoming bytes available
+ // from the server, read them and print them:
+ if (client.available()) {
+ char c = client.read();
+ Serial.print(c);
+ }
+
+ // if the server's disconnected, stop the client:
+ if (!client.connected()) {
+ Serial.println();
+ Serial.println("disconnecting.");
+ client.stop();
+
+ // do nothing forevermore:
+ while(true);
+ }
+}
+