arduino-http.c

#include <stdio.h>
#include <SPI.h>
#include <Ethernet.h>

byte mac[] = {0x00,0xAA,0xBB,0xCC,0xDE,0x02}; // イーサシールドのMacアドレス記入
char hostname[] = "***.sqale.jp"; // 契約中のレンタルサーバのホスト名
char serverName[256];
char httpHeaderHost[256];
EthernetClient client;

void setup()
{
  sprintf(serverName,     "%s", hostname);
  sprintf(httpHeaderHost, "Host: %s", hostname);
  Serial.print("Target host:");
  Serial.println(hostName);
  Serial.begin(9600);

  if (Ethernet.begin(mac) == 0) {
    Serial.println("Failed to configure Ethernet using DHCP");
    for (;;);
  }

  Serial.print("My IP address: ");

  for (byte n=0; n<4; n++) {
    Serial.print(Ethernet.localIP()[n], DEC);
    Serial.print(".");
  }

  Serial.println();
  delay(1000);

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

  if (client.connect(serverName, 80)) {
    Serial.println("connected");
    client.println("GET /hoge/foo HTTP/1.1");
    client.println("User-Agent: aruduino");
    client.println(httpHeaderHost);
    client.println();
  } else {
    Serial.println("connection failed");
  }
}

void loop()
{
  if (client.available()) {
    char c = client.read();
    Serial.print(c);
  }

  if (!client.connected()) {
    Serial.println();
    Serial.println("disconnecting.");
    client.stop();
    while(1){}
  }
}