JP6515761B2 - Relay apparatus, relay method, and relay program - Google Patents

Description

  The present invention relates to communication between devices.

  The file sharing system provides a file stored in a server so that the file can be accessed from a client or another server. File sharing is performed using a protocol such as Common Internet File System (CIFS) or Server Message Block (SMB). In order to use these protocols, dedicated applications are used for servers and clients.

  The protocols used for file sharing, such as CIFS and SMB, are affected by the physical distance between the client and the server because communication messages between the server and the client are often exchanged. As the distance between the client and server increases, the time spent on exchanges increases, and as a result, the speed of file sharing decreases. In order to solve this problem, a method of installing a relay device between the server and the client is known.

  The relay device is installed at a distance physically close to the server. The request command # 1 transmitted from the client is transmitted to the server via the relay device. The server returns a response # 1 corresponding to the request command # 1 to the client. When the client receives the response, it next sends request instruction # 2.

  Here, the client waits until receiving response # 1. The longer the physical distance between the server and the client, the longer this waiting time will be, resulting in wasted time. As a countermeasure against this, there is known a technique such as a "proxy request" in which the relay device transmits the request command # 2 to the server side first instead of the client. The proxy request allows the server to send response # 2 to the client side before request command # 2 from the client arrives, thereby speeding up the CIFS communication.

  As a technique related to proxy requests, there is known a technique for storing responses highly correlated with requests in a high-speed memory in advance in order to speed up the response speed in a MIB (Management Information Base) protocol ( See, for example, Patent Document 1).

JP, 2015-22562, A

  When sharing files between servers and clients, dedicated applications are used for servers and clients. The communication protocols used for these applications and file sharing are updated as needed and their versions are changed.

  In order for the relay device to execute the proxy request, the administrator registers in advance an instruction pattern for executing the proxy request in the relay device each time the version of the communication protocol used for application or file sharing goes up. deep. If the instruction pattern corresponding to the version is not registered, the relay device can not execute the proxy request. Therefore, if the instruction pattern capable of speeding up is a pattern which is not registered, the relay apparatus can not execute the process of speeding up the communication speed.

  The present invention, in one aspect, aims to predict instruction patterns that can be accelerated.

  The relay device includes a storage unit, a prediction unit, and a processing unit. The storage unit stores an instruction pattern of communication packets transmitted and received between applications. When relaying the communication packet, the prediction unit predicts the next instruction pattern to be executed from the instruction pattern similar to the instruction pattern when the instruction pattern of the communication packet to be relayed is not stored in the storage unit. When the first end time is earlier than the second end time, the processing unit associates the predicted instruction pattern with the instruction pattern of the communication packet to be relayed. The first end time is an end time of transmission / reception of the instruction pattern between the applications when the predicted instruction pattern is proxy-requested. The second end time is a second end time which is an end time of transmission / reception of the instruction pattern to be actually relayed next to the instruction pattern of the communication packet to be relayed.

  According to the present invention, an instruction pattern that can be accelerated can be predicted.

It is a sequence diagram explaining the example of processing of the file sharing system concerning this embodiment. It is an example of the functional block diagram of a relay apparatus. Diagram for explaining an example of the hardware configuration of a relay device It is a flowchart explaining the example of processing (the 1) of a relay device. It is a flowchart explaining the example of the process (the 2) of a relay apparatus.

  The relay device according to the present embodiment speeds up communication between applications used by both the server and the client. Therefore, when relaying a communication packet, the relay device first determines whether an instruction pattern capable of speeding up is stored. When an instruction pattern capable of speeding up is stored, the relay device sends a proxy request instruction associated with the instruction pattern to the server side in advance as a proxy, thereby speeding up communication time for file sharing. Plan.

  If a speedupable instruction pattern is not stored, the relay device detects a proxy request (instruction) associated with a pattern similar to the speedupable instruction pattern. The relay device predicts the time when communication is performed using the command of the proxy request. When it is predicted that speeding up of communication is possible by using a proxy request associated with the similar pattern, the relay apparatus registers the proxy request in association with the instruction pattern of the relaying communication. Do. Thus, the relay apparatus can automatically determine and register the command pattern and the proxy request that can be accelerated.

Hereinafter, embodiments will be described in detail with reference to the drawings.
FIG. 1 is a sequence diagram for explaining an example of processing of the file sharing system according to the present embodiment. The file sharing system includes a client 11, a relay device 12, a relay device 13, and a server 14. The file sharing system is a system in which the server 14 stores files accessible by the client 11 and the server 14 appropriately shares the file according to the request according to the request of the client 11. The relay device 120 and the relay device 130 relay communication packets between the client 11 and the server 14. The relay device 12 is installed at a place where the physical distance to the client 11 is short. The relay device 13 is installed at a place where the physical distance to the server 14 is short. The client 11 and the server 14 use dedicated applications to share files.

<Instruction pattern stored>
For example, when downloading a file stored in the server 14, the client 11 sequentially transmits commands C <b> 1 to C <b> 3 to the server 14. C1 (Open) is a request command for accessing a file stored in the server 14 from the client 11. C2 (Info) is a request command for acquiring information on the file to be downloaded. C3 (Read) is a request command for actually downloading the file.

  Here, the relay device 13 stores an instruction pattern of communication transmitted and received between the server 14 and the client 11 (including an application and a protocol). For example, the relay device 13 stores a series of instruction patterns of C1 and C2, and stores that an instruction of C3 is transmitted after that in association with the instruction pattern. Therefore, when relaying C <b> 1 and C <b> 2, the relay device 13 can send a proxy request with the next command C <b> 3 to the server 14.

  The processing relating to the proxy request will be described using processing 101 to processing 118. The client 11 transmits C1 which is a request command for accessing a file stored in the server 14 to the server 14 (processing 101). The relay device 12 relays C1 from the client 11 and transmits it to the relay device 13 (process 102). The relay device 13 relays C1 and transmits it to the server 14 (process 103). The server 14 transmits R1 which is a response corresponding to the command of C1 to the relay device 13 (process 104). The relay device 13 relays R1 and transmits it to the relay device 12 (process 105). The relay device 12 relays R1 from the relay device 13 and transmits it to the client 11 (process 106).

  The client 11 sends C2 addressed to the server 14 as a request command to acquire information on the file to be downloaded stored in the server 14 (process 107). The relay device 12 relays C2 from the client 11 and transmits the C2 to the relay device 13 (process 108). The relay device 13 relays C2 and transmits it to the server 14 (process 109). The server 14 transmits R2 which is a response corresponding to the command of C2 to the relay device 13 (process 110). The relay device 13 relays R2 and transmits it to the relay device 12 (process 111). The relay device 12 relays R2 from the relay device 13 and transmits it to the client 11 (process 112).

  The relay device 13 stores that the C3 instruction is to be executed after the series of C1 and C2 instruction patterns. Therefore, the relay device 13 transmits an instruction of C3 to the server 14 without waiting for C3 to be transmitted (processing 113). The process 113 is a "proxy request" of C3. The relay device 13 notifies the relay device 12 that C3 has been requested to the server 14 as a proxy (process 114).

  When R2 is received in process 112, the client 11 transmits C3 which is a request command for actually downloading the file to the server 14 (process 115). Since the relay apparatus 12 receives that the proxy request of C3 has been implemented in the process 114, the relay apparatus 12 waits until receiving a response R3 corresponding to C3. The relay device 12 does not transmit C3 to the server 14. When the server 14 receives C3 in response to the proxy request of process 113, the server 14 transmits R3 to the client 11 (process 116). The relay device 13 relays R3 and transmits it to the relay device 12 (process 117). The relay device 12 relays R3 and transmits it to the client 11 (process 118).

  As described above, when the relay device 13 issues a request command as a proxy without waiting for the C3 command from the client 11, the time required for communication of the file sharing system can be accelerated.

<No instruction pattern memory>
In processing 101 to processing 118, it is stored in the relay apparatus 13 that the instruction of C3 is transmitted next to the instruction pattern of C1 and C2. On the other hand, processes 201 to 222 shown below are examples in which the relay apparatus 13 relays an instruction pattern not registered.

  The client 11 is an example of a process in a file sharing system in which commands are transmitted in the order of C2, C2, and C3 in processes 201 to 222. The relay device 13 does not store the series of instruction patterns C2, C2, and C3.

  The client 11 sends C2 addressed to the server 14 as a request command for acquiring information on the file to be downloaded stored in the server 14 (process 201). The relay apparatus 12 relays C2 from the client 11 and transmits the C2 to the relay apparatus 13 (process 202). The relay device 13 relays C2 and transmits it to the server 14 (process 203). The server 14 transmits R2 which is a response corresponding to the command of C2 to the relay device 13 (process 204). The relay device 13 relays R2 and transmits it to the relay device 12 (process 205). The relay device 12 relays R2 from the relay device 13 and transmits it to the client 11 (process 206). The client 11 sends C2 addressed to the server 14 as a request command to acquire information on the file to be downloaded stored in the server 14 (process 207). The relay apparatus 12 relays C2 from the client 11 and transmits it to the relay apparatus 13 (process 208). The relay device 13 relays C2 and transmits it to the server 14 (process 209). The server 14 transmits R2 which is a response corresponding to the process of C2 to the relay device 13 (process 210). The relay device 13 relays R2 and transmits it to the relay device 12 (process 211). The relay device 12 relays R2 from the relay device 13 and transmits it to the client 11 (process 212).

  The relay device 13 determines whether an instruction pattern that matches the series of instructions C2 and C2 is stored in its own memory. However, the instruction pattern corresponding to the series of instructions C2 and C2 is not stored in the relay apparatus 13. Therefore, the relay device 13 does not transmit a proxy request command. Here, the relay device 13 according to the present embodiment detects an instruction pattern similar to a series of instructions such as C2 and C2. For example, the relay device 13 determines that the series of instructions C2 and C2 and the series of instructions C1 and C2 are similar. Here, since the instructions included in the instruction pattern partially match (C2), the relay device 13 determines that the instructions are similar. Similar judgment criteria are not limited to partial agreement.

  The relay device 13 predicts that the next instruction C3 associated with the similar instruction pattern of C1 and C2 is to be transmitted next. The relay apparatus 13 acquires the current time "t1" when it determines the similar instruction pattern (processing 213).

  When R2 is received in the process 212, the client 11 transmits C3 which is a request command for actually downloading the file to the server 14 (process 214). The relay device 12 relays C3 from the client 11 and transmits it to the relay device 13 (process 215). The relay device 13 relays C3 and transmits it to the server 14 (process 216). The server 14 transmits R3 which is a response corresponding to the command of C3 to the relay device 13 (process 217). The relay device 13 relays R3 and transmits it to the relay device 12 (process 218). The relay device 12 relays R3 from the relay device 13 and transmits it to the client 11 (process 219).

  The relay device 13 first compares the instruction predicted to be executed next (C3) with the instruction actually requested (C3) to determine whether it is the same instruction. When the predicted instruction and the actually requested instruction are the same, the relay device 13 transmits time “t1” to the relay device 12 (process 220).

  Here, since the relay device 12 compares the predicted end time (first time) when the proxy request is made with the actual end time (second time) when the proxy request is not made, the relay device 12 compares the predicted end time with the predicted end time (second time). Calculate the actual end time. The relay apparatus 12 acquires a transmission time “t2” for transmitting an instruction to relay in process 215 and a reception time “t3” for a response to be relayed in process 218.

The relay device 12 calculates the time taken for the round trip between the client 11 and the server 14 of the command of C3 from the transmission time “t2” and the reception time “t3”. In addition, since the relay apparatus 12 and the client 11 and the relay apparatus 13 and the server 14 are installed in a short distance, it can be considered that there is no communication time. The relay apparatus 12 assumes half of the time taken for the round trip (time taken for one way) to be the time taken for making a proxy request. Therefore, the relay device 12 calculates the prediction end time as Expression 1 below.
Prediction end time = t1 + (t3-t2) / 2 Formula 1

  The relay device 12 compares the predicted end time (first time) in the case of making a proxy request with the actual end time (second time) in the case of not making a proxy request. When the actual end time is later than the predicted end time, the relay apparatus 12 determines that the file sharing process can be speeded up by requesting the predicted command (C3) as a proxy. The relay apparatus 12 transmits, to the relay apparatus 13, a request to register C <b> 3 so as to make a proxy request in correspondence with the command pattern used for the prediction (process 221). The relay device 13 stores the instruction (C3) used for prediction in association with the similar instruction pattern (process 222). Specifically, the relay device 13 stores C3 in association with the series of instruction patterns C2 and C2. The relay apparatus 13 may store C3 in association with the instruction pattern, with C2 as the instruction pattern.

  The relay device 13 may calculate the predicted end time and the actual end time and compare them. In that case, the relay device 12 transmits the transmission time “t2” and the reception time “t3” to the relay device 13 in process 221. Thereafter, the relay device 13 may calculate the predicted end time and the actual end time.

  As described above, the relay device 13 sets the series of instruction patterns of C2 and C2 that have not been stored as an instruction pattern that can be speeded up, and then registers the instruction pattern that the instruction C3 is transmitted. Then, when relaying the C2 and C2 instruction patterns, the relay device 13 can execute the proxy request in advance to increase the speed of file sharing between the client 11 and the server 14.

  Even in the case of a minor change due to a version upgrade of a communication protocol or application, the sequence of communication has been comprehensively reexamined so far, and the instruction pattern has been registered in the relay apparatus 13. By automating this, manual processing can also be reduced.

  Although the relay apparatus 13 in FIG. 1 predicts the instruction C2 from a series of instruction patterns C2 and C2, it may predict an instruction pattern including a plurality of instructions. In that case, the relay device 13 compares the predicted end time when the predicted command pattern is executed with the actual end time of transmission / reception related to the command pattern. When the predicted end time is earlier than the actual end time, the relay device 13 stores the predicted instruction pattern in the memory in association with the series of instruction patterns.

  FIG. 2 is an example of a functional block diagram of the relay device. The relay device 12 and the relay device 13 have the same configuration. The application 15 is software that the server 14 or the client 11 uses for file sharing.

  The transmission and reception unit 301 transmits and receives a request and a response from the application 15. The transmitting / receiving unit 306 transmits / receives a request and a response to another relay apparatus via the network. The communication packet received by the transmitting and receiving unit 301 is relayed to the transmitting and receiving unit 306 and transferred. The communication packet received by the transmission / reception unit 306 is relayed to the transmission / reception unit 301 and transferred. The storage unit 302 stores an instruction pattern in communication between the server 14 and the client 11, and an instruction to be executed next for each instruction pattern.

  The determination unit 303 determines whether the storage unit 302 stores an instruction pattern that matches a series of instructions of the communication packet to be relayed. When the instruction pattern that matches the series of instructions of the communication packet to be relayed is not stored in the storage unit 302, the determining unit 303 determines an instruction pattern similar to the series of instructions of the communication packet being relayed.

  The prediction unit 304 assumes that a proxy request has been made based on a pattern determined as a similar instruction pattern by the determination unit 303, and predicts the end time predicted in that case. The determination unit 303 compares the predicted end time predicted by the prediction unit 304 with the end time when the process is actually ended.

  The processing unit 305 generates a communication packet of a proxy request and causes the transmission / reception unit 301 or 306 to transmit the proxy request. If the predicted end time predicted is earlier (if speeding up can be achieved), the processing unit 305 determines the instruction (C3) used for the prediction by the prediction unit 304 and the instruction pattern (C2, C2) of the relayed communication packet. And the storage unit 302 in association with each other.

  FIG. 3 is a diagram for explaining an example of the hardware configuration of the relay device. The relay device includes a processor 21, a memory 22, a bus 25, an external storage device 26, and a network connection device 29. Further, as an option, the relay device may include an input device 23, an output device 24, and a medium drive device 27. The relay device may be realized by, for example, a server, a computer, or the like.

  The processor 21 can be any processing circuit including a central processing unit (CPU). The processor 21 operates as a determination unit 303, a prediction unit 304, and a processing unit 305. The processor 21 can execute, for example, a program stored in the external storage device 26. The memory 22 operates as the storage unit 302. Furthermore, the memory 22 appropriately stores data obtained by the operation of the processor 21 and data used for the processing of the processor 21. The network connection device 29 is used for communication with another device, and operates as a transmission / reception unit 301 and a transmission / reception unit 306.

  The input device 23 is realized, for example, as a button, a keyboard, a mouse or the like, and the output device 24 is realized as a display or the like. The bus 25 connects the processor 21, the memory 22, the input device 23, the output device 24, the external storage device 26, the medium drive device 27, and the network connection device 29 so as to mutually exchange data. The external storage device 26 stores programs, data and the like, and appropriately provides the stored information to the processor 21 and the like. The medium drive device 27 can output data of the memory 22 and the external storage device 26 to the portable storage medium 28, and can read programs, data and the like from the portable storage medium 28. Here, the portable storage medium 28 is any portable storage medium, including a flexible disk, a Magnet-Optical (MO) disk, a Compact Disc Recordable (CD-R), and a Digital Versatile Disc Recordable (DVD-R). It can be done.

  FIG. 4 is a flowchart illustrating an example of processing (part 1) of the relay device. The flowchart according to FIG. 4 is an example of processing performed by the relay device 13. The transmitting and receiving unit 306 receives an instruction from the client 11 (step S101). The transmitting and receiving unit 301 relays the command received by the transmitting and receiving unit 306 to the server 14 (step S102). The transmitting and receiving unit 301 receives a response corresponding to the command from the server 14 (step S103). The determination unit 303 determines whether an instruction pattern that matches the instruction of the relayed communication packet is stored in the storage unit 302 (step S104).

  If a matching command pattern is stored in storage unit 302 (YES in step S104), transmission / reception unit 301 transmits a proxy request to server 14 (step S105). The transmitting and receiving unit 301 receives a response corresponding to the proxy request (step S106). The transmitting and receiving unit 306 transfers the response to the client 11 (step S107). When the process of step S107 ends, the relay device 13 repeats the process from step S101.

  When the matching instruction pattern is not stored in storage unit 302 (NO in step S104), determination unit 303 matches the instruction of the relayed communication packet with a part of the instruction pattern stored in storage unit 302 It is determined whether or not (step S108). If there is an instruction pattern that partially matches (YES in step S108), the transmission / reception unit 306 acquires the current time "t1" (step S109). The determination unit 110 determines whether the predicted instruction and the actually transmitted / received instruction match (step S110). If the predicted command and the command actually transmitted and received match (YES in step S110), the transmitting and receiving unit 306 transmits the time "t1" to the client 11 (step S111).

  When the process of step S111 ends, the relay device 13 repeats the process from step S101. If there is no partially matching instruction pattern (NO in step S108), the relay device 13 repeats the process from step S101. If the predicted command and the command actually transmitted / received do not match (NO in step S110), the relay device 13 repeats the process from step S101.

  FIG. 5 is a flowchart illustrating an example of processing (part 2) of the relay device. The flowchart according to FIG. 5 is an example of processing executed by the relay device 12. The processing of the relay device 12 will be described using the functional block diagram of FIG. The transmitting and receiving unit 301 receives an instruction from the client 11 (step S201). The processing unit 305 acquires the current time as the transmission time “t2” of the command (step S202). The transmitting and receiving unit 306 transfers the command to the server 14 (step S203). The transmitting and receiving unit 306 receives a response corresponding to the command from the relay device 13 on the server 14 side (step S204). The processing unit 305 acquires the current time as the reception time “t3” of the response (step S205). The transmitting and receiving unit 301 relays the response to the client 11 (step S206). The processing unit 305 determines whether the transmitting and receiving unit 306 has received the time “t1” from the relay device 13 (step S207).

  When the time “t1” is received from the relay device 13 (YES in step S207), the processing unit 305 calculates a prediction end time (step S208). The determination unit 303 compares the predicted end time with the actual end time, and determines whether the speed can be increased (step S209). If speedup is possible (YES in step S209), the processing unit 305 sets an instruction pattern not stored as an instruction pattern capable of speeding up, and registers the predicted instruction in the storage unit (step S210). . The transmitting / receiving unit 306 notifies the relay apparatus 13 to register the same information (step S211). As described above, by storing the instruction pattern capable of speeding up and the predicted instruction on the side of the relay device 12 as well, proxy response can be performed. Specifically, when the relay device 12 newly receives the predicted command or command pattern stored from the client 11, the relay device 12 proxy-responds to the client 11 a response received as a result of making a proxy request on the relay device 13 side. be able to.

  If time “t1” can not be received from the relay apparatus 13 (NO in step S207), the relay apparatus 12 repeats the process from step S201. If speeding up is not possible (NO in step S209), the relay device 12 repeats the process from step S201. When the process of step S211 ends, the relay device 12 repeats the process from step S201.

  As described above, the relay device 13 sets a series of instruction patterns of C2 and C2 that have not been stored as an instruction pattern that can be speeded up, and then registers the instruction pattern as that to which the instruction C3 is transmitted. Then, when the command patterns of C2 and C2 are relayed thereafter, the relay device 13 can execute the proxy request (C3), and the communication time related to file sharing between the client 11 and the server 14 can be shortened.

  Even in the case of a minor change due to a version upgrade of a communication protocol or application, the sequence of communication has been comprehensively reexamined so far, and the instruction pattern has been registered in the relay apparatus 13. By automating this, manual processing can also be reduced.

The following appendices will be further disclosed regarding the above embodiments.
(Supplementary Note 1)
A storage unit that stores instruction patterns of communication packets transmitted and received between applications;
When relaying the communication packet, if an instruction pattern of the communication packet to be relayed is not stored in the storage unit, a prediction unit that predicts an instruction pattern to be executed next from an instruction pattern similar to the instruction pattern; ,
The first end time, which is an end time of transmission / reception of the instruction pattern between the applications when a proxy request of the predicted instruction pattern is made, is actually relayed next to the instruction pattern of the communication packet to be relayed. A processing unit that associates the predicted instruction pattern with an instruction pattern of the communication packet to be relayed, if the instruction pattern is earlier than a second end time that is an end time of transmission / reception of the instruction pattern;
A relay apparatus characterized by comprising:
(Supplementary Note 2)
The processing unit is
When the instruction pattern partially matches among the similar patterns, the part where the instruction pattern partially matches is associated with the predicted instruction pattern and stored in the storage unit. The relay apparatus according to claim 1, characterized in that
(Supplementary Note 3)
When relaying a communication packet transmitted / received between applications, a first end which is an end time of transmission / reception of a command pattern predicted to be executed next from a command pattern similar to the command pattern of the relayed communication packet A determination unit that compares a time and a second end time that is an end time of transmission and reception of the instruction pattern that is actually relayed next to the instruction pattern of the communication packet to be relayed;
When the first end time is earlier than the second end time, another relay device is notified of a command pattern that stores the predicted command pattern in association with the command pattern of the communication packet to be relayed. A transceiver unit,
A relay apparatus characterized by comprising:
(Supplementary Note 4)
A storage unit that stores the predicted instruction pattern in association with the instruction pattern of the communication packet to be relayed;
The transmitting and receiving unit
When the predicted instruction pattern stored in the storage unit is newly received,
The relay apparatus according to claim 3, wherein the other relay apparatus makes a proxy response using a response received as a result of making a proxy request using the predicted instruction pattern.
(Supplementary Note 5)
A relay system including first and second relay apparatuses for relaying communication packets transmitted and received between applications, comprising:
The first relay device is
When relaying the communication packet, an instruction pattern to be executed next is predicted from an instruction pattern similar to the instruction pattern of the communication packet to be relayed,
Get the first time when the prediction process is finished,
If the instruction pattern and the instruction pattern to be actually relayed next to the instruction pattern of the relayed communication packet match, the first time is transmitted to the second relay apparatus (FIGS. 1 and 12).
The second relay device is
When the first time is received, a first end time, which is an end time of transmission and reception of the instruction pattern between the applications, is sent to the first time when the predicted instruction pattern is transmitted by proxy. Calculated based on
Calculating a second end time which is an end time of transmission and reception of the instruction pattern to be actually relayed next to the instruction pattern of the communication packet to be relayed;
When the second end time is later than the first end time, the predicted instruction pattern is stored in the first relay device in association with the instruction pattern of the communication packet to be relayed. A relay system characterized by notifying.
(Supplementary Note 6)
The second relay device is
When the instruction pattern partially matches among the similar instruction patterns, the first relay device associates the part where the instruction pattern partially matches with the predicted instruction pattern. The relay system according to appendix 5, wherein the relay system is stored.
(Appendix 7)
When an instruction between applications is relayed, if an instruction pattern of the communication packet to be relayed is not stored in the memory, an instruction pattern to be executed next is derived from an instruction pattern similar to the instruction pattern of the communication packet to be relayed. Predicting and, when the predicted instruction pattern is sent by proxy, predicting a first end time which is an end time of transmission and reception of the instruction pattern between the applications;
If the second end time, which is the end time of transmission / reception of the instruction pattern to be actually relayed next to the instruction pattern of the communication packet to be relayed, is later than the first end time, the predicted instruction pattern is And a control method of a communication packet, which is stored in the memory in association with an instruction pattern of the communication packet to be relayed.
(Supplementary Note 8)
In the similar instruction pattern, when the instruction pattern partially matches, a portion where the instruction pattern partially matches is associated with the predicted instruction pattern and stored in the memory. The control method according to Appendix 7, characterized in that
(Appendix 9)
When an instruction between applications is relayed, if an instruction pattern of the communication packet to be relayed is not stored in the memory, an instruction pattern to be executed next is derived from an instruction pattern similar to the instruction pattern of the communication packet to be relayed. Predicting and, when the predicted instruction pattern is sent by proxy, predicting a first end time which is an end time of transmission and reception of the instruction pattern between the applications;
If the second end time, which is the end time of transmission / reception of the instruction pattern to be actually relayed next to the instruction pattern of the communication packet to be relayed, is later than the first end time, the predicted instruction pattern is A recording medium storing a program that causes a process to be stored in the memory in association with an instruction pattern of the communication packet to be relayed.
(Supplementary Note 10)
When the instruction pattern partially matches among the similar instruction patterns, the part where the instruction pattern partially matches is associated with the predicted instruction pattern and stored in the memory. The recording medium according to Supplementary Note 9 storing a program for executing.

11 Client 12, 13 Relay Device 14 Server 15 Application 301, 306 Transmission / reception unit 302 Storage unit 303 Determination unit 304 Prediction unit 305 Processing unit

Claims (9)

A storage unit that stores instruction patterns of communication packets transmitted and received between applications;
When relaying the communication packet, if an instruction pattern of the communication packet to be relayed is not stored in the storage unit, a prediction unit that predicts an instruction pattern to be executed next from an instruction pattern similar to the instruction pattern; ,
The first end time, which is an end time of transmission / reception of the instruction pattern between the applications when a proxy request of the predicted instruction pattern is made, is actually relayed next to the instruction pattern of the communication packet to be relayed. A processing unit that associates the predicted instruction pattern with an instruction pattern of the communication packet to be relayed, if the instruction pattern is earlier than a second end time that is an end time of transmission / reception of the instruction pattern;
A relay apparatus characterized by comprising: The processing unit is
When the instruction pattern partially matches among the similar patterns, the part where the instruction pattern partially matches is associated with the predicted instruction pattern and stored in the storage unit. The relay apparatus according to claim 1, characterized in that When relaying a communication packet transmitted / received between applications, a first end which is an end time of transmission / reception of a command pattern predicted to be executed next from a command pattern similar to the command pattern of the relayed communication packet A determination unit that compares a time and a second end time that is an end time of transmission and reception of the instruction pattern that is actually relayed next to the instruction pattern of the communication packet to be relayed;
When the first end time is earlier than the second end time, another relay device is notified of a command pattern that stores the predicted command pattern in association with the command pattern of the communication packet to be relayed. A transceiver unit,
A relay apparatus characterized by comprising: A relay system including first and second relay apparatuses for relaying communication packets transmitted and received between applications, comprising:
The first relay device is
When relaying the communication packet, an instruction pattern to be executed next is predicted from an instruction pattern similar to the instruction pattern of the communication packet to be relayed,
Get the first time when the prediction process is finished,
If the instruction pattern and the instruction pattern to be actually relayed next to the instruction pattern of the relayed communication packet match, the first time is transmitted to the second relay device;
The second relay device is
When the first time is received, a first end time, which is an end time of transmission and reception of the instruction pattern between the applications, is sent to the first time when the predicted instruction pattern is transmitted by proxy. Calculated based on
Calculating a second end time which is an end time of transmission and reception of the instruction pattern to be actually relayed next to the instruction pattern of the communication packet to be relayed;
When the second end time is later than the first end time, the predicted instruction pattern is stored in the first relay device in association with the instruction pattern of the communication packet to be relayed. A relay system characterized by notifying. The second relay device is
When the instruction pattern partially matches among the similar instruction patterns, the first relay device associates the part where the instruction pattern partially matches with the predicted instruction pattern. The relay system according to claim 4, wherein the relay system is stored. When an instruction between applications is relayed, if an instruction pattern of the communication packet to be relayed is not stored in the memory, an instruction pattern to be executed next is derived from an instruction pattern similar to the instruction pattern of the communication packet to be relayed. Predicting and, when the predicted instruction pattern is sent by proxy, predicting a first end time which is an end time of transmission and reception of the instruction pattern between the applications;
If the second end time, which is the end time of transmission / reception of the instruction pattern to be actually relayed next to the instruction pattern of the communication packet to be relayed, is later than the first end time, the predicted instruction pattern is And a control method of a communication packet, which is stored in the memory in association with an instruction pattern of the communication packet to be relayed. In the similar instruction pattern, when the instruction pattern partially matches, a portion where the instruction pattern partially matches is associated with the predicted instruction pattern and stored in the memory. The control method according to claim 6, characterized in that When an instruction between applications is relayed, if an instruction pattern of the communication packet to be relayed is not stored in the memory, an instruction pattern to be executed next is derived from an instruction pattern similar to the instruction pattern of the communication packet to be relayed. Predicting and, when the predicted instruction pattern is sent by proxy, predicting a first end time which is an end time of transmission and reception of the instruction pattern between the applications;
If the second end time, which is the end time of transmission / reception of the instruction pattern to be actually relayed next to the instruction pattern of the communication packet to be relayed, is later than the first end time, the predicted instruction pattern is A program that causes an information processing apparatus to execute processing for storing in the memory in association with an instruction pattern of the communication packet to be relayed. When the instruction pattern partially matches among the similar instruction patterns, the part where the instruction pattern partially matches is associated with the predicted instruction pattern and stored in the memory. The program according to claim 8, causing the information processing apparatus to execute the program.

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