/*

   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.baidu.com";    // name address for Google (using DNS)

 // Set the static IP address to use if the DHCP fails to assign

 IPAddress ip(,,,);

 // 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();

    while (!Serial) {

     ; // wait for serial port to connect. Needed for Leonardo only

   }

   // start the Ethernet connection:

   if (Ethernet.begin(mac) == ) {

     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();

   Serial.println("connecting...");

   // if you get a connection, report back via serial:

   if (client.connect(server, )) {

     Serial.println("connected");

     // Make a HTTP request:

     client.println("GET /search?q=arduino HTTP/1.1");

     client.println("Host: www.baidu.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);

   }

 }