Request Counter with Arduino Uno + Ethernet Shield + LCD Shield 2012101702

2012101702.c

void loop() {
  
  // verify if there is new client connected
  EthernetClient client = server.available() ;
  if ( !client ) return ;
  
  // prepare for reading request data
  boolean isBlankLine = true ;
  
  // read and proces the client request data
  while ( client.connected() ) {
    if ( !client.available() ) break ;
    
    // reading all the request characters
    char ch = client.read() ;
    
    // generate the response page
    if ( ( ch == '\n' ) && ( isBlankLine ) ) {
      createResponse( client , "OK" , "OK" ) ;
    }
    
    // validation of looking for the blank line
    if ( ch == '\n' ) {
      isBlankLine = true ;
      continue ;
    }
    if ( ch == '\r' ) {
      continue ;
    }
    isBlankLine = false ;
    continue ;   
    
  } // while ( client.connected() )
  
  // client disconnected
  delay( 10 ) ;
  client.stop() ;
  
  // increase and display the total requestor
  totalRequestor = totalRequestor + 1 ;
  lcdPrint( 0 , 1 , String( totalRequestor ) ) ;
}

void createResponse( EthernetClient client, char *statusCode , char *statusDesc ) {
  if ( !client ) return ;
  client.println( "HTTP/1.1 200 OK" ) ;
  client.println( "Content-Type: application/json" ) ;
  client.println( "Connection: close" ) ;
  client.println() ;
  client.println( statusCode ) ;
}