Relay apparatus, recording medium storing a relay program, and a relay method

A relay apparatus comprising:

• a hardware processor configured to execute a procedure, the procedure comprising:
• sequentially receiving a plurality of packets whose payloads constitute a first message, the first message including a header portion containing user identification information;
• generating partial message data containing the user identification information by assembling a sequence of packets that have been selected, from among the first plurality of packets, in reception order thereof, until a packet whose payload contains the user identification information is selected;
• extracting the user identification information from the partial message data and identifying a user identifier from the user identification information, the user identifier being set, in the relay apparatus, in association with connection identification data extracted from the partial message data;
• performing a specific packet process, in accordance with the identified user identifier, on the first plurality of packets
• extracting the connection identification data from the header of the head packet from among the first plurality of packets, and storing the connection identification data in the relay apparatus;
• setting, in the relay apparatus, an assembly flag indicating that a partial message generation process of generating the partial message data is necessary, in association with the connection identification data extracted from the header of the head packet from among the first plurality of packets, and outputting to the partial message generation process a packet from which the same connection identification data as the connection identification data extracted from the header of the head packet is extracted, during a time period in which the assembly flag indicates that the partial message generation process is necessary;
• setting, in the relay apparatus, the assembly flag indicating that the partial message generation process is not necessary, in association with the connection identification data extracted from the partial message data, when the user identifier is identified;
• and
• partitioning, in accordance with the identified user identifier, the partial message data into packets which are output to the partial message generation process, wherein
• when a second message subsequent to the first message shares the same connection identification data with the first message, the specific packet process is performed, in accordance with the user identifier set in the relay apparatus, on a second plurality of packets whose payloads constitute the second message, without extracting the user identification information from the second message.

A computer-readable, non-transitory medium storing a relay program that causes a relay apparatus to execute a procedure, the procedure comprising:

• sequentially receiving a first plurality of packets whose payloads constitute a first message, the first message including a header portion containing user identification information;
• generating partial message data containing the user identification information by assembling a sequence of packets that have been selected, from among the first plurality of packets, in reception order thereof, until a packet whose payload contains the user identification information is selected;
• extracting the user identification information from the partial message data and identifying a user identifier from the user identification information;
• performing a specific packet process, in accordance with the identified user identifier, on the plurality of packets;
• extracting the connection identification data from the header of the head packet from among the first plurality of packets, and storing the connection identification data in the relay apparatus;
• setting, in the relay apparatus, an assembly flag indicating that a partial message generation process of generating the partial message data is necessary, in association with the connection identification data extracted from the header of the head packet from among the first plurality of packets, and outputting, to the partial message generation process, a packet from which the same connection identification data as the connection identification data extracted from the header of the head packet is extracted, during a time period in which the assembly flag indicates that the partial message generation process is necessary;
• setting, in the relay apparatus, the assembly flag indicating that the partial message generation process is not necessary, in association with the connection identification data extracted from the partial message data, when the user identifier is identified;
• and
• partitioning, in accordance with the identified user identifier, the partial message data into packets which are output to the partial message generation process, wherein
• when a second message subsequent to the first message shares the same connection identification data with the first message, the specific packet process is performed, in accordance with the user identifier set in the relay apparatus, on a second plurality of packets whose payloads constitute the second message, without extracting the user identification information from the second message.

A relay method of a processor of a relay apparatus, the relay method comprising:

• sequentially receiving a first plurality of packets whose payloads constitute a first message, the first message including a header portion containing user identification information;
• generating partial message data containing the user identification information by assembling a sequence of packets that have been selected, from among the plurality of packets, in reception order thereof, until a packet whose payload contains the user identification information is selected;
• extracting the user identification information from the partial message data and identifying a user identifier from the user identification information;
• and
• performing a specific packet process, in accordance with the identified user identifier, on the plurality of packets;
• extracting the connection identification data from the header of the head packet from among the first plurality of packets, and storing the connection identification data in the relay apparatus;
• setting, in the relay apparatus, an assembly flag indicating that a partial message generation process of generating the partial message data is necessary, in association with the connection identification data extracted from the header of the head packet from among the first plurality of packets, and outputting, to the partial message generation process, a packet from which the same connection identification data as the connection identification data extracted from the header of the head packet is extracted, during a time period in which the assembly flag indicates that the partial message generation process is necessary;
• setting, in the relay apparatus, the assembly flag indicating that the partial message generation process is not necessary, in association with the connection identification data extracted from the partial message data, when the user identifier is identified;
• and
• partitioning, in accordance with the identified user identifier, the partial message data into packets which are output to the partial message generation process, wherein
• when a second message subsequent to the first message shares the same connection identification data with the first message, the specific packet process is performed, in accordance with the user identifier set in the relay apparatus, on a second plurality of packets whose payloads constitute the second message, without extracting the user identification information from the second message.