RFID Web Client

#include <Ethernet.h>
#include "Dhcp.h"

#include <string.h>

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte server[] = { 208, 97, 167, 189 }; // Google
char code[10]; 
int  val = 0; 
boolean ipAcquired = false;
int bytesread = 0; 

Client client(server, 80);

void setup()
{
  Serial.begin(2400);
  pinMode(2,OUTPUT);   // Set digital pin 2 as OUTPUT to connect it to the RFID /ENABLE pin 
  digitalWrite(2, LOW);                  // Activate the RFID reader
  Serial.println("getting ip...");
  connectViaDHCP();
}



void printArray(Print *output, char* delimeter, byte* data, int len, int base)
{
  char buf[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
  
  for(int i = 0; i < len; i++)
  {
    if(i != 0)
      output->print(delimeter);
      
    output->print(itoa(data[i], buf, base));
  }
  
  output->println();
}

void loop()
{
  if(Serial.available() > 0) {          // if data available from reader 
    if((val = Serial.read()) == 10) 
    {   // check for header 
      bytesread = 0; 
      while(bytesread<10) 
      {              // read 10 digit code 
        if( Serial.available() > 0) 
        { 
          val = Serial.read(); 
          if((val == 10)||(val == 13)) 
          { // if header or stop bytes before the 10 digit reading 
            break;                       // stop reading 
          } 
          code[bytesread] = val;         // add the digit           
          bytesread++;                   // ready to read next digit  
        } 
      }  
      if(bytesread == 10) 
      {              // if 10 digit read is complete 
        digitalWrite(2, HIGH);
        ConnectToWebserver();
        digitalWrite(2, LOW);
        delay(1);
      }
    }
  }
}

void ConnectToWebserver(){

  uint8_t connectStatus;
  
  if (client.connect()) {
    Serial.print(" - Connected");
    
// Send the HTTP GET to the server
    client.print("GET ");
    client.print("/rfid/");
    client.print(code);
    client.print(" HTTP/1.1");
    client.println();
    client.println("Host: www.ultravoid.com");
    client.println();

// Disconnect from the server
    client.flush();
    client.stop();
    
  } else {
// Connection failed
    Serial.println(" - CONNECTION FAILED!");
  }
}

void connectViaDHCP()
{
   int result = Dhcp.beginWithDHCP(mac);
  
  if(result == 1)
  {
    ipAcquired = true;
    
    byte buffer[6];
    Serial.println("ip acquired...");
    
    Dhcp.getMacAddress(buffer);
    Serial.print("mac address: ");
    printArray(&Serial, ":", buffer, 6, 16);
    
    Dhcp.getLocalIp(buffer);
    Serial.print("ip address: ");
    printArray(&Serial, ".", buffer, 4, 10);
    
    Dhcp.getSubnetMask(buffer);
    Serial.print("subnet mask: ");
    printArray(&Serial, ".", buffer, 4, 10);
    
    Dhcp.getGatewayIp(buffer);
    Serial.print("gateway ip: ");
    printArray(&Serial, ".", buffer, 4, 10);
    
    Dhcp.getDhcpServerIp(buffer);
    Serial.print("dhcp server ip: ");
    printArray(&Serial, ".", buffer, 4, 10);
    
    Dhcp.getDnsServerIp(buffer);
    Serial.print("dns server ip: ");
    printArray(&Serial, ".", buffer, 4, 10);
  }
  else
    Serial.println("unable to acquire ip address..."); 
}