JPH07111698B2 - Session management processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] Regarding management of a session related to communication in a computer system, an object of the present invention is to provide a session management processing method capable of efficiently accessing session control information related to communication of a session. Then, a session is established between the required senders and receivers, a session management table for each session is provided in the storage area, and predetermined session control information relating to the session is held in the session management table to manage communication of the session. In the computer system, at the time of establishing the session, the address information indicating the storage area holding the session management table of the other party is mutually acquired, and at the time of message transmission for communication of each session, at the predetermined position of the message, Address information is set and sent, and when a message is received, it is set in the message Configured to access the session management table by the address information being.

[Industrial application field]

The present invention relates to a session management processing method for managing a session related to communication in a computer system.

[Conventional technology]

FIG. 4 is a block diagram showing a configuration example of a computer system, which is a system in which the computer 1 and the computer 2 are connected by a communication line 3, and an application program 4a executed by the computer 1
4d is an application program 4e executed by the computer 2
It is assumed that each one-to-one communication is performed with ~ 4h.

For that purpose, the communication processing units 5 and 6 of both computers form a logical connection as shown by a broken line in the figure between required application programs as known, and call them sessions.
Each communication processing unit 5 and 6 manages each session with a session identification name (hereinafter referred to as a session ID), and at the time of communication, the message is attached with the session ID and transmitted. The received message is distributed and controlled so that the message is passed to the specified application program on the receiving side.

For this purpose, the communication processing units 5 and 6 provide a session management table for each session, and as shown in FIG. 5, all session management tables 7 are connected and managed as a session management queue. Each session management table 7 includes a pointer for a link, a session ID, a session state (session is open, set, etc.), session type, data flow rate control information, address of a program that has opened this session, and the like. Holds control information necessary for session management. Here, the session ID is, for example, a concatenation of the identification names of the programs or terminals on the calling side and the called side.

Upon receiving the message, the communication processing units 5 and 6 search the session management queue by the session ID in the predetermined position, and the session management table 7 in which the session IDs match
Is taken out, the contents are distributed to the required recipients according to the contents, and necessary message processing is performed.

[Problems to be Solved by the Invention]

As described above, the communication processing units 5 and 6 require the session management table to process the received message, and therefore, the communication management queue must be searched each time the message is received. Therefore, as the number of sessions set at the same time increases, there is a problem that the processing time for searching the communication management queue increases and communication efficiency decreases.

It is an object of the present invention to provide a session management processing method capable of efficiently accessing a session management table, which is session control information related to session communication.

[Means for Solving the Problems]

 FIG. 1 is a flow chart of processing showing the configuration of the present invention.

The figure shows a session management processing method, in which a session is established between required senders and receivers, a session management table for each session is provided in a storage area, and predetermined control information related to the session is held in the session management table. In the computer system that manages the communication of the session, at the time of establishing the session shown in processing step 10, the address information indicating the storage area holding the session management table of the other party is mutually acquired, and each session of processing step 11 is acquired. When transmitting a message for communication, the address information is set and transmitted at a predetermined position of the message, and when the message is received in processing step 12, the address management information is set in the session management table according to the address information set in the message. to access.

[Work]

According to this processing method, for example, when the session is established, as the address information of the session management table of the other party, the item address of the session management list is acquired, and each item of the session management list holds a pointer pointing to each session management table. . Thus, when sending a message, the item address is set at a predetermined position in the message and sent. Therefore, on the receiving side, the item address can be extracted from the received message, and the necessary session management table can be directly accessed by the pointer in the relevant item of the session management list. There is no need to reach the management table, and the processing time is shortened.

〔Example〕

FIG. 2 shows the configuration of an access path when the session management table is accessed by the method of the present invention.
A configuration example in which the session management list 20 is provided is shown. The communication processing units 5 and 6 in FIG. 4 respectively provide the session management list 20 in an appropriate storage area.

The session management list 20 is provided with an appropriate number of terms that is not less than the number of sessions that need to be simultaneously managed by the computer system, and each term has a size for storing the address of the storage area.

For example, when the communication processing unit 5 opens a session, if the session management table 21 is newly established, the session management list
Each item of 20 is sequentially scanned, and an unused item (for example, a value "0" represents unused) is detected (for example, the fourth item in the figure), and the newly established session management table 21 is instructed. After setting the pointer to that item, it sends a message requesting the opening of a session to the other computer.

For example, as shown in FIG. 3 (a), the message has the same session ID as the conventional one at the beginning, and the data portion has the same content as the conventional one. , And "calling session address". The address information of the session management table of the other party is set in the "destination session address", but since it is undecided when the session opening request is made, set it to "0" as shown in the figure, "
As the address information of the session management table on the calling side,
The address (storage area address or relative address in the session management list) of the item of the session management list in which the pointer is set is set, and communication is performed with the other party.

Upon receiving this session opening request message, the communication processing unit 6 of the other party processes to open a session according to the specification as in the conventional case, and returns a message in response to the message opening. The response message also has the same format as above, except that as shown in FIG. 3 (b), the address information of the other party notified by the message (a) is set in the "destination session address", and the "calling session" is set. Address information for instructing the newly established session management table is set in "address" and sent.

Upon receiving the response message, the communication processing unit 5 accesses the session management list 20 to obtain a pointer with the address information of the “destination session address”, accesses the session management table 21 with the pointer, and then sends the “calling session address”.
The address information of the session management table of the other party notified by is stored in a predetermined item of the session management table 21, and the session management process is performed in the same manner as in the related art.

In the subsequent communication, the communication processing units 5 and 6 set the address information of the other party in the “destination session address” of the transmission message and send it, and the communication processing units 6 and 5 of the other party.
Can access the session management table using the address information as described above.

〔The invention's effect〕

As apparent from the above description, according to the present invention, in the management of the session related to the communication in the computer system, it is possible to efficiently access the control information of the session related to the communication of the session. There is a significant industrial effect of improving efficiency.

[Brief description of drawings]

 FIG. 1 is a flow chart of processing showing the configuration of the present invention, FIG. 2 is a connection diagram of a session management table of the present invention, FIG. 3 is an explanatory diagram of messages of the present invention, and FIG. 4 is a configuration example of a computer system. FIG. 5 is a block diagram and FIG. 5 is a connection diagram of a conventional session management table. In the figure, 1 and 2 are computers, 3 is a communication line, 4a to 4h are application programs, 5 and 6 are communication processing units, 7 and 21 are session management tables, 10 to 12 are processing steps, and 21 is a session management list. Show.

Claims (1)

[Claims] 1. Communication of a session is established by establishing a session between required senders and receivers, providing a session management table for each session in a storage area, holding predetermined control information relating to the session in the session management table. In the computer system for managing the session, when the session is established, the address information indicating the storage area holding the session management table of the other party is mutually acquired (10), and when the message is transmitted for communication of each session, the message is transmitted. The session management is characterized in that the address information is set and transmitted at a predetermined position of (11), and when the message is received, the session management table is accessed by the address information set in the message (12). Processing method.