root / arduino-1.0 / libraries / Ethernet / examples / WebClient / WebClient.ino @ 58d82c77
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1 | 58d82c77 | Tom Mullins | /* |
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2 | Web client |
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3 | |||
4 | This sketch connects to a website (http://www.google.com) |
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5 | using an Arduino Wiznet Ethernet shield. |
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6 | |||
7 | Circuit: |
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8 | * Ethernet shield attached to pins 10, 11, 12, 13 |
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9 | |||
10 | created 18 Dec 2009 |
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11 | by David A. Mellis |
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12 | |||
13 | */ |
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14 | |||
15 | #include <SPI.h> |
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16 | #include <Ethernet.h> |
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17 | |||
18 | // Enter a MAC address for your controller below. |
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19 | // Newer Ethernet shields have a MAC address printed on a sticker on the shield |
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20 | byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; |
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21 | IPAddress server(173,194,33,104); // Google |
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22 | |||
23 | // Initialize the Ethernet client library |
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24 | // with the IP address and port of the server |
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25 | // that you want to connect to (port 80 is default for HTTP): |
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26 | EthernetClient client; |
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27 | |||
28 | void setup() { |
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29 | // start the serial library: |
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30 | Serial.begin(9600); |
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31 | // start the Ethernet connection: |
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32 | if (Ethernet.begin(mac) == 0) { |
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33 | Serial.println("Failed to configure Ethernet using DHCP"); |
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34 | // no point in carrying on, so do nothing forevermore: |
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35 | for(;;) |
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36 | ; |
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37 | } |
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38 | // give the Ethernet shield a second to initialize: |
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39 | delay(1000); |
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40 | Serial.println("connecting..."); |
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41 | |||
42 | // if you get a connection, report back via serial: |
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43 | if (client.connect(server, 80)) { |
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44 | Serial.println("connected"); |
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45 | // Make a HTTP request: |
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46 | client.println("GET /search?q=arduino HTTP/1.0"); |
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47 | client.println(); |
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48 | } |
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49 | else { |
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50 | // kf you didn't get a connection to the server: |
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51 | Serial.println("connection failed"); |
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52 | } |
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53 | } |
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54 | |||
55 | void loop() |
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56 | { |
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57 | // if there are incoming bytes available |
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58 | // from the server, read them and print them: |
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59 | if (client.available()) { |
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60 | char c = client.read(); |
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61 | Serial.print(c); |
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62 | } |
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63 | |||
64 | // if the server's disconnected, stop the client: |
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65 | if (!client.connected()) { |
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66 | Serial.println(); |
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67 | Serial.println("disconnecting."); |
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68 | client.stop(); |
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69 | |||
70 | // do nothing forevermore: |
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71 | for(;;) |
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72 | ; |
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73 | } |
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74 | } |