1. A processing responding device that responds to a processing requesting device through a network, comprising: a first obtaining unit capable of obtaining information; a first protocol processing unit for obtaining a command of a second protocol when the command of the second protocol is stored in a processing request of a first protocol obtained by the first obtaining unit from the processing requesting device; and a second protocol processing unit that interprets the obtained command of the second protocol, executes and passes a result of the execution to the first protocol processing unit; wherein the first protocol processing unit processes a response to the processing request on the basis of the execution result of the second protocol processing unit.