Apparatus, system, and method of managing counterpart terminal information, and recording medium

A method of managing candidate counterpart terminal information, comprising:

• storing, for each one of a plurality of terminals in a memory, attribute information relating to an attribute of the terminal in association with terminal identification information that identifies the terminal;
• storing, for each one of one or more request sender terminals of the plurality of terminals in the memory, a candidate list of one or more candidate counterpart terminals of the plurality of terminals that the request sender terminal is capable of starting communication with;
• receiving a request for adding a specific candidate counterpart terminal of the plurality of terminals to the candidate list of a specific request sender terminal of the plurality of terminals;
• and
• determining whether attribute information stored in association with the specific request sender terminal matches attribute information stored in association with the specific candidate counterpart terminal to be added;
• and
• storing counterpart terminal identification information that identifies the specific candidate counterpart terminal in association with terminal identification information of the specific request sender terminal to update the candidate list of the specific request sender terminal when a determination result at the determining indicates that the attribute information match.

A non-transitory recording medium storing a plurality of instructions which, when executed by one or more processors, cause the processors to perform a method, the method comprising:

• storing, for each one of a plurality of terminals in a memory, attribute information relating to an attribute of the terminal in association with terminal identification information that identifies the terminal;
• storing, for each one of one or more request sender terminals of the plurality of terminals in the memory, a candidate list of one or more candidate counterpart terminals of the plurality of terminals that the request sender terminal is capable of starting communication with;
• receiving a request for adding a specific candidate counterpart terminal of the plurality of terminals to the candidate list of a specific request sender terminal of the plurality of terminals;
• and
• determining whether attribute information stored in association with the specific request sender terminal matches attribute information stored in association with the specific candidate counterpart terminal to be added;
• and
• storing counterpart terminal identification information that identifies the specific candidate counterpart terminal in association with terminal identification information of the specific request sender terminal to update the candidate list of the specific request sender terminal when a determination result at the determining indicates that the attribute information match.