Patent ID: 9584408
Date: 2017-02-28
CPC Classifications: H04L

Claim:
1. A packet data extraction device that includes a processor and a memory, the packet data extraction device extracts target data from a packet which is in process of transmission in a case where a message is transmitted as a plurality of packets, the packet data extraction device comprising: a packet checking section that uses a procedure name of the message to electronically identify an object packet in an object payload, the packet checking section is configured to use data positional information to electronically identify a target packet in a target payload; a procedure name checking section that electronically extracts the procedure name of the message from the object packet, which the procedure name is contained in an object payload of the object packet, with reference to the object payload of the object packet stored in a temporary storing section in which the object packet, which is included in the plurality of packets and is in process of transmission, is temporarily stored; a positional information storing section that electronically stores the procedure name and the data positional information to associate the procedure name with the data positional information, the data positional information being indicative of a position at which the target data in the message is stored; and a target data obtaining section for obtaining the target data from the target payload of the target packet which is included in the plurality of packets and is specified by the data positional information indicative of a position at which the target data is stored and which is associated, in the positional information storing section, with the procedure name checked by the procedure name checking section.