JPH10326207A - Session maintenance control system for www server - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit both efficient use of resources of a WWW server and user's convenience by sending a session monitor program in a terminal system from the WWW server system. SOLUTION: A WWW server 1, when receiving a request message from a terminal system 30, determines whether or not the message is a process request to a high-order application 20 for which session management is necessary, and then determines whether or not it has a session ID in such a case. When the request already has the session ID, the request message is passed to the high-order application 20. When the message does not have the session ID, on the other hand, a session maintenance control process 12 registers it newly in a session management table 15 and then sends a session maintenance program 41 out to the terminal system 30. At the same time, a session ID for session maintenance and an indication requesting the same request message of the WWW server 11 again are also sent out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
This is an information retrieval service widely used on intranets. The present invention relates to a session maintenance and management system for a WWW server, and more particularly to a session maintenance and management system suitable for a database system that operates for a long time.

[0002]

2. Description of the Related Art H which is a communication protocol in WWW
Since TTP (Hyper Text Transfer Protocol) is a one-page service protocol, it is not suitable for processing related requests that span multiple pages, such as a narrow search in a database search. To achieve this, it is common to use a method called session management. According to this method, it is also possible to narrow down a database search.

However, the problem here is that, for example, when a client terminal system such as a personal computer goes down with a session established, the session is maintained on the WWW server. Hardware resources such as a memory and a disk that store information about the session are not released.

In such a case, in the conventional system, the database access gateway program monitors the timer, detects a session in which there is no state change for a certain period, releases resources, and refreshes.

[0005] The session management is discussed on page 92 of "WWW-Database Cooperation System Construction Method" by Nikkei Data Pro, issued on March 4, 1996.

[0006]

According to the above-mentioned prior art, the setting of the timer monitoring time makes it impossible for the resources of the WWW server to be used improperly for a long time, or the user interrupts the work during the establishment of the session and waits for a while. However, even if the user intends to restart the system after taking care of it, no consideration has been given to the fact that the session has been disconnected without permission from the WWW server, and there has been a problem that the system is not easy to use for all users.

An object of the present invention is to achieve both efficient use of resources of a WWW server and convenience of a user.

[0008]

The object of the present invention is to provide a program for notifying a WWW server of a session maintenance request.
Achieved by running on the client side.
The program operated on the client side is sent from the WWW server.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a configuration example of a WWW system according to the present invention. The computer system 10 includes a WWW server program 11 and a higher-level application program 20 that operates in conjunction with the WWW server program 11. The WWW server program 11 has a process 12 for maintaining and managing a session.
Have five. The upper-level application program 20 includes a gateway program 21 that requires maintenance of a session, for example, a database access. The database access gateway program 21 accesses the database 22. The electronic computer 10 is connected to the Internet / intranet,
It can be accessed from the terminal system 30 which is a client on which the browser 40 operates. The WWW browser 40 can operate a program sent from the WWW server 11 as a higher-level application. As a result, the session maintenance program 41 is operated.

FIG. 2 shows an example of the structure of a session management table. The upper application ID, the session ID, the timer value for storing the access time, and the electronic value assigned for this session are shown in correspondence with the terminal system address. It has an area for storing the address of a resource in the computer 10.

FIG. 3 shows an example of a processing flow of session maintenance and management of a WWW server system according to the present invention.

The request message from the WWW browser 40 of the terminal system 30 is HTTP: Hyper Text Tran.
According to the sfer protocol, it contains the terminal address. Also, when an instruction to maintain a session has already been notified from the WWW server 11, the session ID is also included.

When the request message from the terminal system 30 is received by the WWW server 11, it is determined whether the request is a processing request to the upper application 20 requiring session management, and if so, it is determined whether or not it has a session ID. I do.

In the case of a request having a terminal system address and a session ID already registered in the session management table 15, the access time is overwritten and stored in the timer value storage area of the session management table 15, and the request message is passed to the upper application. .

If there is no session ID, the session maintenance / management process 12 executes the session management table 1
After the new registration in 5, the session maintenance program 41 is sent to the terminal system 30. At this time, a session ID for maintaining the session and an instruction to transmit the same request message to the WWW server again are also transmitted.

The session maintenance program 41 operates as an upper application of the WWW browser 40 of the terminal system 30, and notifies the WWW server program 11 that the terminal system is operating at regular intervals. W
When the request message from the terminal system 30 is a session maintenance notification from the session maintenance program 41, the WW server program 11 overwrites and stores the access time in the timer value storage area of the session management table 15.

The session maintenance / management process 12 of the WWW server program 11 includes a session maintenance program 41
Monitors the timer value storage area of the session management table 15 at a time interval sufficiently longer than the time interval at which the session maintenance notification is transmitted, and, for a session having a past time exceeding a certain value, the computer 10 Free resources within.

According to the present embodiment, the terminal system 30 and the W
Even if the processing during the maintenance of the session is interrupted due to a hang-up of the WW browser 40, etc., the session maintenance / management process detects the interruption of the session by the WWW server program 11, and the electronic security secured for the session is detected. The resources of the computer 10 can be released at an early stage, which is effective for smooth operation of other processes. In addition, since a session that the user of the WWW browser 40 does not intend to release is not generated, the convenience is improved.

[0020]

As described above, according to the present invention,
By sending the session monitoring program from the WWW server system to the terminal system, it is possible to maintain and manage the session without unduly consuming computer resources. Therefore, efficient use of computer resources and user's convenience can be achieved. Can be improved.

[Brief description of the drawings]

FIG. 1 shows a W having a session maintenance management function according to the present invention.
FIG. 2 is a diagram illustrating a configuration example of a WW server system.

FIG. 2 is a diagram showing an example of the contents of a session management table.

FIG. 3 is a diagram showing an example of a flow of a session maintenance management process according to the present invention.

[Explanation of symbols]

10: Computer system, 11: WWW server program, 12: Session maintenance / management process, 1
5: session management table; 41: session maintenance program.

Claims (3)

[Claims] 1. A WWW server system using WWW (World Wide Web) technology, wherein a program is sent to a client side to maintain a session, and the operating status of the client is monitored based on a notification from the program. WWW server session maintenance management system. 2. In a WWW server system using WWW (World Wide Web) technology, a program is sent to a client side in order to maintain a session, and a client maintaining a session is sent to the server side by a notification from the program. WW, characterized by not being cut from
W server session maintenance management system. 3. In a WWW server system using WWW (World Wide Web) technology, a program is sent to a client in order to maintain a session, and when a notification from the program is interrupted, a failure of the client is recognized. A session maintenance and management system for a WWW server, characterized by releasing a session on a server side.