Data processing device and data processing method

In a data processing method using a data processing apparatus on a transmitting side having an application for performing processing using a device, a driver means for accepting an access request to the device from the application, and a handler means for performing access processing to the device and transmitting a message, and a data processing apparatus on a receiving side for receiving a message transmitted from the data processing apparatus, the data processing method comprising:

• a requesting step in which an application makes an access request to the device to the driver means;
• an invoking step in which the driver means invokes a handler means for performing access processing to the device;
• a responding step in which the driver means responds to the access request of the application;
• a selecting step in which the driver means selects a handler means from among a plurality of handler means corresponding to the destination if the driver means obtains a message having the destination and data to be transmitted from the invoked handler means as a result of accessing to the device;
• a transmitting step in which the selected handler means transmits the message to the destination, or the data processing apparatus on the receiving side;
• and
• a transferring step in which the data processing apparatus on the receiving side transfers the received message to a device specified by a destination described in the received message.