Arduino GSM Shield HTTP request

gistfile1.txt

// (c) Copyright 2010-2011 MCQN Ltd.
// Released under Apache License, version 2.0
//
// Simple example to show how to use the HttpClient library
// Get's the web page given at http://<kHostname><kPath> and
// outputs the content to the serial port
// The example is adapted to run on the GSM/GPRS shield
// in asynchronous mode
//
// Circuit:
// * GSM shield attached
//

// libraries
#include <SPI.h>
    #include <Ethernet.h>
    #include <SPI.h>
#include <HttpClient.h>
#include <b64.h>
#include <GSM3SMSService.h>
#include <GSM3ShieldV1AccessProvider.h>
#include <GSM3ShieldV1ClientProvider.h>
#include <GSM3ShieldV1SMSProvider.h>
#include <GSM3ShieldV1DataNetworkProvider.h>
#include <GSM3MobileClientService.h>

// initialize the gsm library instance
GSM3ShieldV1AccessProvider gsm; // include a 'true' parameter for debug enabled
GSM3MobileClientService client((bool)true);
GSM3ShieldV1ClientProvider s1client;
GSM3ShieldV1DataNetworkProvider gprs;
GSM3SMSService sms;
GSM3ShieldV1SMSProvider smsp;


  //ip Address of the server you will connect to
    int port = 80;
     
    //The location to go to on the server
    //make sure to keep HTTP/1.0 at the end, this is telling it what type of file it is
    String location = "/accounts/ HTTP/1.0";

// APN data
#define GPRS_APN       "mobile.o2.co.uk" // replace your GPRS APN
#define GPRS_LOGIN     "web"    // replace with your GPRS login
#define GPRS_PASSWORD  "web" // replace with your GPRS password

// This example downloads the URL "http://arduino.cc/"

// Name of the server we want to connect to
byte server[] = { 79,125,107,191 };
// Path to download (this is the bit after the hostname in the URL
// that you want to download
const char* kPath = "/";

// Number of milliseconds to wait without receiving any data before we give up
const int kNetworkTimeout = 30*1000;
// Number of milliseconds to wait if no data is available before trying again
const int kNetworkDelay = 1000;

// setup() changes against the Ethernet original example
void setup()
{
  // initialize serial communications
  Serial.begin(9600);

  // Asynchronous start GSM shield
  // If your SIM has PIN, pass it as a parameter of begin() in quotes
  // The second parameter is restart option
  // The third parameter is zero because it means asynchronous mode
  if(gsm.begin(0, 1, 0))
  while(gsm.ready()==0)
  {
    // Your Code...
    Serial.println("Waiting for GSM ready");
    delay(1000);
  }
  Serial.println("Connected to GSM network");
  
  // Asynchronous attach GPRS
  gprs.attachGPRS(GPRS_APN, GPRS_LOGIN, GPRS_PASSWORD, 0); // The third parameter is zero because it means asynchronous mode
  while(gprs.ready()==0)
  {
    // Your code...
    Serial.println("Waiting to GPRS attachment");
    delay(1000);
  }
  if (gprs.ready()==1) Serial.println("Attached");
  Serial.println("Connected to GPRS network");

}


// ... but loop() does not change, and runs!
void loop(){
        String pageValue = connectAndRead(); //connect to the server and read the output
     
      Serial.println(pageValue); //print out the findings.
     
      delay(5000); //wait 5 seconds before connecting again
}


 String connectAndRead(){
      //connect to the server
     
      Serial.println("connecting...");
     
      //port 80 is typical of a www page
      if (client.connect(server, port)) {
        Serial.println("connected");
        client.print("GET ");
        client.println(location);
        client.println();
     
        //Connected - Read the page
        Serial.println("SUCCESS!"); //go and read the output
        
      
     
      }
      
      
      
      else{
        return "connection failed";
      }
     
    }