Spark.io OpenSensorCloud test

double temperature;

#define APIKEY         "<YOUR API KEY>"
#define DEVICE_ID      "<YOUR DEVICE ID>"
#define USERAGENT      "Spark" 
byte server[] = {88,190,31,53};   // api.opensensorcloud.com IP address

// initialize the library instance:
TCPClient client;

void setup()   {                
  Serial.begin(9600);
  
  // Connect the temperature sensor to A7 and configure it
  // to be an input
  pinMode(A0, INPUT);
}

void loop()
{
  float  voltage = ( analogRead(A0) * 3.3 *3.3/5.0)/4095;
  temperature = voltage*100.0;
  sendValue("temp",temperature);
  while (client.available())
  {
    char c = client.read();
    Serial.print(c);
  }

  if (!client.connected())
  {
    Serial.println();
    Serial.println("disconnecting.");
    client.stop();
  }
  
    delay(10000);
}


void sendValue(String key,float value)
{
    Serial.println("Will post...");
    String data="[{\"name\":\""+key+"\",\"value\":"+String(value)+"}]";
    sendData(data);
}

// this method makes a HTTP connection to the server:
void sendData(String &thisData) {
  // if there's a successful connection:
  Serial.println(thisData);
  if (client.connect(server, 80)) {
    Serial.println("connecting...");
    
    // send the HTTP PUT request:
    client.println("POST /device/"+String(DEVICE_ID)+" HTTP/1.1");
    Serial.println("Sending:");
    client.println("Host:api.opensensorcloud.com");
    client.print("X-ApiKey: ");
    client.println(APIKEY);
    client.print("User-Agent: ");
    client.println(USERAGENT);
    client.print("Content-Length: ");
    client.println(thisData.length());
    // last pieces of the HTTP PUT request:
    client.println("Content-Type: application/json");
    client.println("Connection: close");
    client.println();
    
    // here's the actual content of the PUT request:
    client.println(thisData);
    client.println();
    Serial.println("Request done:"+thisData);
  }
  
  else {
    // if you couldn't make a connection:
    Serial.println("connection failed");
    Serial.println();
    Serial.println("disconnecting.");
    client.stop();
  }

}