Relay apparatus and method for transferring message

A relay apparatus for transferring message data received from a client to one of a plurality of servers, the relay apparatus comprising:

• a storage for holding data of an acknowledgment necessity table, the acknowledgment necessity table including first identification information of a first apparatus to which the relay apparatus acknowledges when the relay apparatus has received first transfer rule notification data from the first apparatus, the first apparatus being one of a plurality of relay apparatuses each of which broadcasts transfer rule notification data;
• and
• a processor for determining whether the acknowledgment necessity table includes the first identification information identical to second identification information of a second apparatus upon receiving second transfer rule notification data from the second apparatus, the second apparatus being one of the plurality of relay apparatuses, and transmitting acknowledgment data to the second apparatus when the acknowledgment necessity table includes the first identification information identical to the second identification information.

A non-transitory computer-readable storage medium storing a program causing a computer to execute a procedure, the computer being a relay apparatus for transferring message data received from a client to one of a plurality of servers, the procedure comprising:

• determining whether an acknowledgment necessity table includes identification information identical to first identification information of a first apparatus upon receiving first transfer rule notification data from the first apparatus, the acknowledgment necessity table including second identification information of a second apparatus to which the computer acknowledges when the computer has received second transfer rule notification data from the second apparatus, the first apparatus being one of a plurality of relay apparatuses each of which broadcasts transfer rule notification data, the second apparatus being one of the plurality of relay apparatuses;
• and
• transmitting acknowledgment data to the first apparatus when the acknowledgment necessity table includes the identification information identical to the first identification information.

A method executed by a relay apparatus for transferring message data received from a client to one of a plurality of servers, the method comprising:

• determining, by the relay apparatus, whether an acknowledgment necessity table includes identification information identical to first identification information of a first apparatus upon receiving first transfer rule notification data from the first apparatus, the acknowledgment necessity table including second identification information of a second apparatus to which the relay apparatus acknowledges when the relay apparatus has received second transfer rule notification data from the second apparatus, the first apparatus being one of a plurality of relay apparatuses each of which broadcasts transfer rule notification data, the second apparatus being one of the plurality of relay apparatuses;
• and
• transmitting acknowledgment data to the first apparatus when the acknowledgment necessity table includes the identification information identical to the first identification information.