JPH0824316B2 - Data exchange protocol processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] A data exchange system for handling a plurality of messages of different protocols, in which a communication management unit for identifying the protocols is provided to facilitate addition of heterogeneous protocol processes. For the purpose of the system, it has a communication management unit and a message processing unit, the communication management unit transmits and receives a message via a communication line, has a protocol identification table, and receives the predetermined message to be received by the protocol identification table. Control to store the correspondence between the specified message processing unit and the communication line, and subsequently transfer the message between the message processing unit and the communication line. However, the protocol identification table has a required inspection position within the electronic message, an inspection character string, and an electronic message processing unit designation for each required protocol type. When each character string determined by the inspection position matches each of the inspection character strings, the electronic message processing unit that processes the electronic message is configured to be indicated by the electronic message processing unit designation,
Each of the message processing units is provided corresponding to each required protocol, and is configured to process the message transmitted / received to / from the communication line via the communication management unit.

[Industrial applications]

The present invention relates to a data exchange system that handles a plurality of messages of different protocols, and more particularly to a data exchange protocol processing method for handling a plurality of different protocols.

[Problems to be Solved by Conventional Techniques and Inventions]

FIG. 5 is a block diagram showing a configuration example of a data exchange system. A plurality of terminal devices 1a to 1n are connected to a data collection / distribution center 3 via, for example, a data exchange network 2, and predetermined data are collected by the data collection / distribution center 3. Concentrate and deliver.

Here, each of the terminal devices 1a, 1b to 1n is a terminal provided in a different company, and thus there is a system in which a plurality of companies share a distribution center for business operations. By establishing a standard protocol and making all companies use that protocol, the collection and distribution work between companies is realized.

However, such a system is required to be able to handle a plurality of different protocols due to the fact that operations can be performed across different tasks.

In that case, the processing function of the added protocol can be added as easily as possible, and the operation of the center can be performed in the same manner as when the standard protocol is used even when the communication of a plurality of different protocols is handled. Communication management is desired.

An object of the present invention is to provide a data exchange protocol processing method that achieves the above-mentioned demand by providing a control unit for identifying a protocol so that a different protocol processing can be easily added.

[Means for solving the problem]

 FIG. 1 is a block diagram showing the configuration of the present invention.

The figure shows a configuration of a data exchange protocol processing method provided in the collection and distribution center, and has a communication management unit 10 and a message processing unit 11, and the communication management unit 10 transmits and receives a message via a communication line 13. The protocol identification table 12 is provided, the predetermined message to be received is collated with the protocol identification table to identify the message processing unit 11, and the correspondence between the identified message processing unit 11 and the communication line 13 is stored, The subsequent message is controlled so as to be transferred between the message processing unit 11 and the communication line 13, and the protocol identification table 12 displays the required inspection position in the message, the inspection character string, and the message processing unit designation. , For each required protocol type, each character string determined by each of the inspection position of the message, when each corresponding to the check character string, the message processing unit 11 for processing the message, As indicated by the designation of the message processing unit, Is, electric sentence processing unit 11 is provided corresponding to a required each protocol, the communication management unit 10
The electronic message transmitted / received to / from the communication line 13 is processed.

[Action]

According to this processing method, each message processing unit is created so as to process only a message according to each required protocol, and if the identification condition of each protocol type is defined by the protocol identification table of a predetermined format, the communication management unit Since the distribution of data is processed, it is relatively easy to add necessary protocols. Still, one message processing unit is prepared to support the standard protocol. The control and management of message transmission / reception can be commonly processed by the communication management unit.

〔Example〕

The system has, for example, a configuration as shown in FIG. 5, except that the protocols handled by the respective terminal devices 1a, 1b to 1n are such that a plurality of different protocols coexist depending on the type of the terminal device.

When the terminal devices 1a, 1b to 1n are connected to the collection and distribution center 3 via the data exchange network 2 in order to request and execute the collection or distribution of required data to the collection and distribution center 3, first, the open request message is transmitted. To start communication.

FIG. 2 is a diagram showing a processing procedure in the case of collecting and delivering by starting from the terminal devices 1a, 1b to 1n, and the communication management unit 10
When the station opening request message is received, the protocol is identified by inspecting the message by the protocol identification table 12, and the message processing unit 11 that processes this message is determined.
The protocol identification process will be described in detail later.

When the message processing unit 11 determines, the correspondence between the communication line that has received the message and the message processing unit is identified, for example, in the control table that has a term for each communication line, by using the identification name of the message processing unit (the message processing unit ID). ) Is set and stored, the message is transferred to the message processing unit 11 and the process is started.

The start request message has a format as shown in FIG. 3A, for example, and the message processing unit 11 first extracts a character string of a center code from a predetermined position of the message and sends it to the communication management unit 10 to confirm the center. Since the request is made, the communication management unit 10 confirms the predetermined validity of the center code and notifies the result.

If the center code is correct, the message processing unit 11 analyzes the opening request message, checks the validity of the password, etc., and if correct, identifies whether the request mode is concentrating or delivering, and then creates an opening response message. Requesting transmission, the communication management unit 10 sends the message to the communication line in which the message processing unit ID of the message processing unit 11 is stored by the protocol identification. The opening reply message (and closing request and closing reply message described later) are also in the format shown in FIG. 3 (a), for example.

Upon receiving the normal opening reply message, the terminal device transmits a start request message, and when this is received by the communication management unit 10, the message processing unit that has performed the above processing according to the message processing unit ID stored in the line. The start request message is transferred to 11. Similarly, the electronic message processing unit 11 and the terminal devices 1a and 1b
A series of message transmission / reception with one of 1 to 1n can be performed via the communication management unit 10.

The start request message (and the start reply, end request, and end reply message described later) have the format shown in FIG. 3B, for example.
The message processing unit 11 extracts the specified file name, requests the communication management unit 10 for confirmation, and receives a notification of the result. When the validity of the file name is confirmed, the start request message is processed, the access code is checked, and if there is no error in the file, the specified file is opened and accessible, and then the start response message is created. The communication result is transmitted via the communication management unit 10, and the transmission result returned from the terminal device is the communication management unit.
It is returned to the message processing unit 11 via 10.

After that, the transmission of the data telegram is started, and in the case of a distribution request, the telegram processing unit 11 reads the data from the file to create the data telegram, and transmits the data telegram to the terminal device via the communication management unit 10. When the normal response is received from the communication management unit 10 as a transmission / reception result, the next data telegram is created and transmitted, and such processing is repeated to deliver the designated data.

If the request is for concentration, the terminal device that issued the request
Since the data telegram is sent from 1a, 1b-1n, the communication management unit
10 receives it, transfers it together with the reception result to the electronic message processing unit 11, and the electronic message processing unit 11 repeats the process of storing the data of the normally received data electronic message in the specified file.

As described above, when the transmission / reception of the required data is completed, the termination request message from the terminal device is received via the communication management unit 10, so the message processing unit 11 creates and returns the completion response message. Next, if a closing request message is sent from the terminal device, the message processing unit 11 creates and returns a closing reply message, and if it is sent normally, after completion processing such as file closing, communication is performed. An end notification is sent to the management unit 10 and the message processing unit 11 completes the processing.

In response to the end notification from the message processing unit 11, the communication management unit 10 deletes the message processing unit ID of the message processing unit 11 stored corresponding to the communication line, disconnects the line, and performs a series of receiving or distribution. The process ends.

FIG. 4 is a diagram for explaining a configuration example of the protocol identification table 12, and each protocol identification table 12 is instructed by the management table 20 of the communication management unit 10.
The number of valid terms is set at the head of the management table 20, and a pointer pointing to each protocol identification table 12 is set for each term of the number indicated by the number of valid terms from the next term.

The communication management unit 10 uses the protocol identification processing described above.
Protocol identification table 12 indicated by the management table 20
When read one by one, the character string of the received message is inspected according to the protocol identification information. That is, the protocol identification information is the inspection position from the digit position indicated by "position",
The character string in the message that consists of the number of digits indicated by "length",
It consists of a specification in which what is to be matched with the character string indicated by "character string" is arranged by the required number of character string pairs.

The communication management unit 10 collates the character string at the specified position of the received message with the character string in the “character string” column of the identification information, and if all the specified character strings match the message and the identification information, the protocol It is determined that the message is the message of the protocol specified in the identification table 12.

Such an inspection is performed by sequentially reading the protocol identification table 12 until the protocol is determined, and if there is a table in which all the character strings match, the "telegram processing unit ID"
The electronic message processing unit 11 shown in (1) determines that the electronic message is to be processed and processes it as described above.

"Protocol ID" and "Protocol type"
Is passed to the message processing unit 11 as auxiliary information in the case where one message processing unit 11 can process two or more similar protocols. In addition, if necessary, after identifying with the protocol identification table 12, the message processing unit 11 finely classifies the protocol by the center code, the password, etc., and the message processing unit handles small protocol differences. You can also choose to do so.

〔The invention's effect〕

As is apparent from the above description, according to the present invention, it is possible to economically support various protocols by facilitating addition of different protocol processing in a data exchange system that handles a plurality of messages of different protocols. There is a remarkable industrial effect.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of the present invention, FIG. 2 is a diagram showing an example of a processing procedure of the present invention, FIG. 3 is an explanatory diagram of an example of a message, and FIG. 4 is a diagram showing an example of a protocol identification table configuration, FIG. 5 is a diagram showing a configuration example of a data exchange system. In the figure, 1a to 1n are terminal devices, 2 is a data exchange network, 3 is a collection and distribution center, 10 is a communication management unit, 11 is a message processing unit, 12 is a protocol identification table, and 13 is a communication line.

Claims (1)

[Claims] 1. A communication management unit (10) and a message processing unit (11), the communication management unit (10) transmitting and receiving a message via a communication line (13), and a protocol identification table (12). And the predetermined message to be received is transmitted to the protocol identification table (1
The electronic message processing unit (11) is identified by collating with 2), the correspondence between the identified electronic message processing unit (11) and the communication line (13) is stored, and subsequent electronic messages are identified as the electronic message processing unit. The protocol identification table (12) controls the transfer to and from the communication line, and displays the required inspection position in the message, the inspection character string, and the message processing unit designation for each required protocol type. The electronic message processing unit (11) that processes the electronic message is designated when the character strings defined at all the inspection positions of the electronic message match the respective inspection character strings. The electronic message processing unit (11) is provided corresponding to each required protocol, and the communication line (13) is passed through the communication management unit (10).
A data exchange protocol processing method, characterized in that it is configured to process the electronic message transmitted and received.