Information processing apparatus and control method therefor

An information processing apparatus that executes an application in response to a processing request received from an external device via a network, the apparatus comprising:

• a first registration unit that registers the application in association with a predetermined port number;
• a determination unit that determines whether or not a transfer application is to be registered, the transfer application redirecting the processing request for the application registered by the first registration unit from the external device;
• a second registration unit that registers the transfer application in association with a transfer port number if the determination unit determines that the transfer application is to be registered;
• a reception unit that receives, from the external device via the network, a processing request including identification information for identifying an application and a port number;
• a processing unit that executes the application registered by the first registration unit if the identification information included in the received processing request indicates the application registered by the first registration unit and if the port number included in the received processing request indicates the predetermined port number;
• and
• a redirection unit that, if the identification information included in the received processing request indicates the application registered by the first registration unit, and if the port number included in the received processing request indicates the transfer port number, transmits, to the external device, a redirection message for causing the external apparatus to automatically transmit a processing request including the application registered by the first registration unit and the predetermined port number, by executing the transfer application registered by the second registration unit.