JP2009075929A - Web service system, web service providing device, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a web service system that allows a user to transmit and receive a message to/from the other users and that does not depend on the environment of application among them and manage user's connection situation. <P>SOLUTION: A web application server 7 that is a web service requesting device enables to add user information 61 to the request of service and transmit the request of service, to which the user information 61 is added to a web service server 3 which is the web-service providing device. The web service server 3 enables confirmation of the logout time 65 related to the added user information 61, when receiving the request of service and update a record in a connection situation table 53 related to the added user information 61, by using the time counted by adding the time out set time to the current time as the logout time 65, if the logout time 65 has not passed the current time. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a web service system, a web service providing apparatus, and a program in which a web service requesting apparatus and a web service providing apparatus are connected via a network and perform message transmission / reception.

  The web service refers to a technology in which applications on the Internet transmit / receive messages using an XML (extensible Markup Language) protocol called SOAP (Simple Object Access Protocol), or a service to which the technology is applied. Hereinafter, a system using a web service is referred to as a web service system.

  SOAP is a protocol for exchanging messages between applications, and implements a remote procedure call (remote procedure call) by interacting several messages. In particular, by using SOAP, messages can be transmitted and received without depending on each other's application environment (OS (Operating System), programming language, etc.).

  On the other hand, a web application system is an application system that uses web functions and features. In the web application system, the communication means between the server and the user terminal is HTTP (HyperText Transfer Protocol).

  Since many web application systems require session management, session management is realized by various methods. Here, the session refers to a series of operations of the user from the time when the user logs in to the system until the user logs out or until a time-out (= a predetermined time elapses without the user doing anything).

  On the other hand, SOAP, which is a premise of the web service system, does not define any session management, and session management is not performed in many web service systems.

  Under these circumstances, recently, a design method (= service-oriented architecture) for constructing a large-scale system as a collection of services has attracted attention, and a shift from a web application system to a web service system is being made (Patent Document 1). reference).

  However, as described above, many web application systems manage sessions not defined by SOAP. The session management is realized depending on the server OS, the program language, or the HTTP specification. As an example, there is a method of using a session ID issued by a server. In this case, when the user logs in to the system, the server issues a unique session ID, and thereafter manages the session using the information of the session ID. As a method of holding the session ID on the user terminal side, use of Cookie (see Patent Document 1), or hidden field of FORM tag (in the case of JAVA (registered trademark) language, hidden in <html: form> tag) Field).

In patent document 1, it has shifted to the web service system in the form of following the session management performed by the existing web application system. This makes it impossible to perform “transmission and reception of messages independent of each other's application environment”, which is the greatest advantage of the web service. That is, depending on the environment on the service providing side, the environment on the side requesting the service needs to be matched.
JP 2005-56058 A

  In order to avoid such a problem, it is best not to manage sessions based on the concept of SOAP stateless communication. However, there is a demand from the service provider side to at least first authenticate the user and then grasp whether the user is properly connected to the system.

  The present invention has been made in view of the above-described problems, and its purpose is to provide a web service system and the like that can send and receive messages independent of each other's application environment and manage user connection status. Is to provide.

  In order to achieve the above-mentioned object, a first invention is a web service system in which a web service requesting device and a web service providing device are connected via a network and transmit / receive a message, wherein the web service requesting device includes: User information associating means for associating user information uniquely identifying a user with a service request; and service request means for transmitting the service request with the user information added to the web service providing apparatus, The web service providing apparatus confirms the logout time related to the user information added when the service request is received and a connection status table that holds a login time and a logout time for each user information, and the logout If the time has not passed the current time, the current time A web service system comprising: a connection status management unit that updates a record of the connection status table related to the added user information with a time obtained by adding a timeout setting time as the logout time. .

  A second invention is a web service providing apparatus used in a web service system that is connected to a web service requesting apparatus via a network and transmits / receives a message, the login time and the user information uniquely identifying a user. When a connection request table holding logout time and a service request to which the user information is added are received from the web service requesting device, the logout time related to the added user information is confirmed, and the logout time is If the current time has not passed, a connection status management means for updating a record of the connection status table related to the added user information, with the time obtained by adding a timeout setting time to the current time as the logout time, Web service providing apparatus characterized by comprising It is.

  The third invention is a program for causing a computer to function as the web service providing apparatus of the second invention.

  According to the present invention, it is possible to provide a web service system capable of sending and receiving messages independent of the environment of each other's application and managing user connection status.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  First, a schematic configuration of a web service system 1 according to an embodiment of the present invention will be described with reference to FIG.

FIG. 1 is a diagram showing a schematic configuration of a web service system 1.
In the embodiment of the present invention, the web application server 7 is a web service requesting device, and the web service server 3 and the database server 5 are web service providing devices. The user terminal 9 performs only communication with the web application server 7 without being aware of the web service server 3. However, the object whose web service server 3 grasps the connection status is a user who uses the user terminal 9. The web service requesting device is not limited to a server related to the web application system. For example, it may be a server or the like related to a client server system that performs communication according to regulations other than HTTP. In the following, in order to avoid confusion, the web service requesting device is only the web application server 7.

  As shown in FIG. 1, the web service system 1 includes at least a web service server 3, a web application server 7, and a user terminal 9 connected via a network 11. The database server 5 may communicate directly with the web service server 3 or may communicate via the network 11.

  The web service server 3 receives a request message from the web application server 7 or the like and provides a web service. The database server 5 holds a database related to the web service. Here, the contents of the web service are various. For example, when the web service system 1 is a product management system, the database server 5 holds a product information database, and the web service server 3 provides services such as search, registration, update, or deletion of the product information database.

  Information on an interface related to a web service is generally described and published by WSDL (Web Services Description Language) which is a language specification based on XML. The interface information related to the web service includes where the web service is located, what the service provides, and what format the message uses for the web service. It is.

  The web application server 7 performs HTTP communication with the user terminal 9 and provides a web application screen to the user. Further, the web application server 7 transmits and receives a message by the SOAP to and from the web service server 3 which is a web service providing apparatus as a web service requesting apparatus. Here, there are a variety of web application screens. For example, when the web service system 1 is a product management system, a product list display screen, a product search condition input screen, a product search result display screen, product registration information, product update information or product deletion Provides information input screens.

  The user terminal 9 performs HTTP communication with the web application server 7 using web browsing software, and uses the function of the web application. In the embodiment of the present invention, it is assumed that the user who uses the user terminal 9 is already registered as a user of the web service system 1.

  The network 11 is configured by the Internet, a local area network (LAN), or the like, regardless of whether it is wired or wireless.

  Next, the hardware configuration of the web service server 3 and the like will be described with reference to FIG.

FIG. 2 is a hardware configuration diagram of a computer that implements the web service server 3. Note that the hardware configuration in FIG. 2 is an example, and various configurations can be adopted depending on the application and purpose.
The web service server 3 includes a control unit 13, a storage unit 15, a media input / output unit 17, a communication control unit 19, an input unit 21, a display unit 23, a peripheral device I / F unit 25, and the like connected via a bus 27. The

  The control unit 13 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like.

The CPU calls a program stored in the storage unit 15, ROM, recording medium, etc. to a work memory area on the RAM, executes it, controls the drive of each device connected via the bus 27, and the web service server 3 The process to be described later is realized.
The ROM is a non-volatile memory and permanently holds a computer boot program, a program such as BIOS, data, and the like.
The RAM is a volatile memory, and temporarily stores a program, data, and the like loaded from the storage unit 15, ROM, recording medium, and the like, and includes a work area used by the control unit 13 for performing various processes.

The storage unit 15 is an HDD (hard disk drive), and stores a program executed by the control unit 13, data necessary for program execution, an OS (operating system), and the like. As for the program, a control program corresponding to an OS (operating system) and an application program corresponding to processing described later are stored.
Each of these program codes is read by the control unit 13 as necessary, transferred to the RAM, read by the CPU, and executed as various means.

  The media input / output unit 17 (drive device) inputs / outputs data, for example, a CD drive (-ROM, -R, -RW, etc.), DVD drive (-ROM, -R, -RW, etc.), MO drive, etc. And other media input / output devices.

  The communication control unit 19 has a communication control device, a communication port, and the like, and is a communication interface that mediates communication between the computer and the network 11, and controls communication with other computers via the network 11.

The input unit 21 inputs data and includes, for example, a keyboard, a pointing device such as a mouse, and an input device such as a numeric keypad.
An operation instruction, an operation instruction, data input, and the like can be performed on the computer via the input unit 21.

  The display unit 23 includes a display device such as a CRT monitor and a liquid crystal panel, and a logic circuit (such as a video adapter) for realizing a video function of a computer in cooperation with the display device.

  The peripheral device I / F (interface) unit 25 is a port for connecting a peripheral device to the computer, and the computer transmits and receives data to and from the peripheral device via the peripheral device I / F unit 25. The peripheral device I / F unit 25 is configured by USB, IEEE 1394, RS-232C, or the like, and usually includes a plurality of peripheral devices I / F. The connection form with the peripheral device may be wired or wireless.

  The bus 27 is a path that mediates transmission / reception of control signals, data signals, and the like between the devices.

  The hardware configuration of the database server 5, the web application server 7, and the user terminal 9 is the same as the hardware configuration of the web service server 3 described above.

  Next, data used in the web service system 1 will be described with reference to FIG.

FIG. 3 is a diagram illustrating an example of data held in the connection status table 53.
As shown in FIG. 3, the connection status table 53 holds data items such as user information 61, login time 63, and logout time 65.

  The user information 61 is information that uniquely identifies the user, and is, for example, a user ID. The login time 63 is a time when the user logs into the web service system 1. The logout time 65 is normally a time used for determination of timeout. However, when the user logs out of the web service system 1 by a proper procedure, the time when the user logged out is shown.

  In the web service system 1, in addition to the connection status table 53 described above, a user authentication table is used. The user authentication table holds at least user information 61 and information necessary for authentication of the user information 61. The information necessary for authentication of the user information 61 is, for example, a password. In addition, the web service system 1 uses a table specific to the web service.

  Next, a configuration for realizing the functions of the web service server 3, the database server 5, and the web application server 7 will be described with reference to FIGS.

FIG. 4 is a block diagram showing an outline of functions of the web application server 7.
As shown in FIG. 4, the web application server 7 includes a login request unit 71, a service request unit 73, a logout request unit 75, a user information association unit 77, and the like. In addition, the arrow in the figure indicates that the function related to the arrow has a relationship of calling the function related to the tip of the arrow.

  The login request unit 71 calls the user information association unit 77 in response to the login request received from the user terminal 9 or the like, and the user information association unit 77 adds the user information 61 and information necessary for authenticating the user information 61 to the login request. The request is transmitted to the web service server 3. Here, the login request is an HTTP request for requesting login to the web service system 1. The login request is a message that conforms to the SOAP rules for requesting the web service server 3 for login processing.

  The service request unit 73 calls the user information association unit 77 in response to the service request received from the user terminal 9 or the like, and transmits the service request to which the user information 61 is added by the user information association unit 77 to the web service server 3. . Here, the service request is an HTTP request for requesting a service provided by the web service system 1. The service request is a message that conforms to the SOAP rules for requesting a service from the web service server 3.

  The logout request unit 75 calls the user information association unit 77 in response to the logout request received from the user terminal 9 or the like, and transmits the logout request to which the user information 61 is added by the user information association unit 77 to the web service server 3. . Here, the logout request is an HTTP request for requesting logout from the web service system 1. The logout request is a message that conforms to the SOAP rules for requesting the web service server 3 for logout processing.

  The user information associating unit 77 adds the user information 61 to the service request or the logout request. Further, the user information association unit 77 adds user information 61 and information necessary for authentication of the user information 61 to the login request. However, the login request means 71 may add the login request because the login information includes the user information 61 and information necessary for the authentication of the user information 61.

  In order to specifically realize the user information association unit 77, the user information 61 is carried around between the web application server 7 and the user terminal 9, or the HTTP request received by the web application server 7 and the user information 61 It is necessary to retain information that associates. As the former realization method, for example, there is use of Cookie (see Patent Document 1). Further, as the latter realization method, when an IP address that identifies the user terminal 9 is uniquely assigned to the user, a list that associates the user information 61 with the IP address may be held. However, the technical idea according to the present invention does not have a special technical feature in the user information association unit 77, and what kind of realization method is selected is merely a design matter.

  In addition to the functions described above, the web application server 7 has a function of generating a web page as an HTTP response and transmitting it to the user terminal 9 or the like.

FIG. 5 is a block diagram showing an outline of functions of the web service server 3.
As shown in FIG. 5, the web service server 3 includes a login processing unit 31, a service processing unit 33, a logout processing unit 35, a connection status management unit 37, and the like. In addition, the arrow in the figure indicates that the function related to the arrow has a relationship of calling the function related to the tip of the arrow.

  The login processing unit 31 authenticates the user information 61 in response to the login request received from the web application server 7 or the like, and calls the connection status management unit 37. If the authentication of the user information 61 fails, the login processing unit 31 ends the process without calling the connection status management unit 37.

  In response to the service request received from the web application server 7 or the like, the service processing unit 33 calls the connection status management unit 37 and executes the service. Note that when the result of the processing end is returned from the connection status management unit 37, the service processing unit 33 ends the processing without executing the service.

  The logout processing unit 35 calls the connection status management unit 37 in response to the logout request received from the web application server 7 or the like.

  The connection status management unit 37 manages the user connection status. Specifically, it is called from the login processing unit 31, the service processing unit 33, and the logout processing unit 35, and performs processing in the following three scenes.

  First, when the login processing unit 31 is called, that is, when the login request is received and the user information 61 is successfully authenticated, the connection status management unit 37 sets the current time as the login time 63. In addition, a record of the connection status table 53 related to the added user information 61 is registered with the time obtained by adding the timeout setting time to the login time 63 as the logout time 65. Note that the time-out setting time is predetermined.

Secondly, when called by the service processing means 33, that is, when a service request is received, the connection status management means 37 confirms the logout time 65 related to the added user information 61, and the logout time If 65 does not pass the current time, the record of the connection status table 53 relating to the added user information 61 is updated with the time obtained by adding the timeout setting time to the current time as the logout time 65.
On the other hand, when the service request is received, the connection status management unit 37 confirms the logout time 65 related to the added user information 61. If the logout time 65 has passed the current time, the processing for the service request is terminated. The message to be returned is returned to the service processing means 33.

  Third, when called by the logout processing unit 35, that is, when a logout request is received, the connection status management unit 37 sets the current time as the logout time 65 and connects to the added user information 61. The record of the status table 53 is updated.

  In addition to the functions described above, the web service server 3 has a function of transmitting / receiving a message to / from the web application server 7 according to the SOAP protocol.

FIG. 6 is a block diagram showing an outline of the functions of the database server 5.
As shown in FIG. 6, the database server 5 includes database access means 51, a connection status table 53, a web service specific table group 55, and the like. In addition, the arrow in the figure indicates that the function related to the arrow has a relationship of calling the function related to the tip of the arrow.

  The database access means 51 performs search, registration, update, deletion, etc. of records in various tables held by the database server 5. The connection status table 53 is as described above with reference to FIG. The web service specific table group 55 includes the user authentication table and the table specific to the web service described above with reference to FIG.

  Next, details of processing according to the web service system 1 will be described with reference to FIGS. 7 to 9.

FIG. 7 is a diagram showing details of the login process.
As shown in FIG. 7, when receiving a login request from the user terminal 9 (S101), the web application server 7 transmits a login request to the web service server 3 (S102). Here, the login request and the login request include user information 61 and information necessary for authentication of the user information 61.

Next, the web service server 3 authenticates the user information 61 (S103). The authentication of the user information 61 is performed based on whether or not the user information 61 included in the login request and the information necessary for the authentication of the user information 61 match the information registered in the user authentication table.
If the authentication of the user information 61 is successful, the process proceeds to S104.
If authentication of the user information 61 fails, a message to that effect is transmitted to the web application server 7 (not shown). Then, the web application server 7 transmits a web page to be displayed at the time of login failure to the user terminal 9 (not shown).

  Next, the web service server 3 registers the user information 61 in the connection status table 53 (S104). Here, the value of the data item of the connection status table 53 relating to the record to be registered is that the user information 61 is included in the login request, the login time 63 is the current time, and the logout time 65 is the timeout time 63 added to the login time 63. It is time.

  Next, the web service server 3 transmits a return value indicating successful login to the web application server 7 (S105), and the web application server 7 transmits a web page to be displayed after login to the user terminal 9 (S106).

FIG. 8 is a diagram showing details of service processing.
As shown in FIG. 8, when receiving a service request from the user terminal 9 (S201), the web application server 7 transmits a service request to the web service server 3 (S202). Here, the service request includes user information 61.

Next, the web service server 3 searches for a record in the connection status table 53 related to the user information 61 included in the service request, and confirms the logout time 65 (S203).
If the logout time 65 has not passed the current time, the process proceeds to S204.
If the logout time 65 has passed the current time, the processing for the service request is terminated, and the user transmits a message indicating timeout (not shown) to the web application server 7. Then, the web application server 7 transmits a web page to be displayed upon timeout to the user terminal 9 (not shown).

  Next, the web service server 3 updates the connection status table 53 (S204). Here, the value of the data item of the connection status table 53 relating to the record to be updated is that in which the user information 61 is included in the service request, and the logout time 65 is the time obtained by adding the timeout setting time to the current time.

  Next, the web service server 3 executes processing for the service request (S205). The execution contents here are different for each service request.

  Next, the web service server 3 transmits the processing result for the service request to the web application server 7 (S206), and the web application server 7 transmits a web page for the response to the service request to the user terminal 9 (S207). .

FIG. 9 is a diagram illustrating details of the logout process.
As shown in FIG. 9, when receiving a logout request from the user terminal 9 (S301), the web application server 7 transmits a logout request to the web service server 3 (S302). The logout request includes user information 61.

  Next, the web service server 3 updates the connection status table 53 (S303). Here, the values of the data items of the connection status table 53 relating to the record to be updated are those in which the user information 61 is included in the logout request, and the logout time 65 is the current time.

  Next, the web service server 3 transmits a return value indicating success of logout to the web application server 7 (S304), and the web application server 7 transmits a web page to be displayed after logout to the user terminal 9 (S305).

  As described above, according to the embodiment of the present invention, the web application server 7 which is a web service requesting device sends a login request to which user information 61 and information necessary for authentication of the user information 61 are added, to the web It transmits to the web service server 3 which is a service provision apparatus. When the web service server 3 receives the login request and the user information 61 is successfully authenticated, the web service server 3 sets the current time as the login time 63 and the time obtained by adding the timeout setting time to the login time 63 as the logout time. As 65, a record of the connection status table 53 related to the added user information 61 is registered. Accordingly, the web service server 3 can authenticate a user who uses the web service system 1 and can acquire initial information for grasping the connection status of the user after login.

  Further, the web application server 7 as a web service requesting apparatus adds the user information 61 to the service request, and transmits the service request with the user information 61 added to the web service server 3 as the web service providing apparatus. When the web service server 3 receives the service request, the web service server 3 checks the logout time 65 related to the added user information 61. If the logout time 65 has not passed the current time, the web service server 3 sets a timeout setting time to the current time. The record of the connection status table 53 related to the added user information 61 is updated with the added time as the logout time 65. As a result, the web service server 3 can set a logout time 65, which is a time for newly determining a timeout, for a user who has not timed out, while continuously grasping the connection status of the user. Can provide services.

  On the other hand, when receiving the service request, the web service server 3 confirms the logout time 65 related to the added user information 61, and if the logout time 65 has passed the current time, the processing for the service request is terminated. . Thereby, the web service server 3 can prevent providing a service to a user who has timed out. Furthermore, even if the user is not logged out by a correct procedure, it is possible to prevent an illegal act such as an impersonation by a person who obtained the user information 61 illegally.

  Further, the web application server 7 that is a web service requesting apparatus transmits a logout request to which the user information 61 is added to the web service server 3 that is a web service providing apparatus. When the web service server 3 receives the logout request, the web service server 3 updates the record of the connection status table 53 related to the added user information 61 with the current time as the logout time 65. Thereby, the web service server 3 can provide the service while accurately grasping the time when the user actually logged out.

  As can be seen from the above description, the messages transmitted and received between the web application server 7 and the web service server 3 include information dependent on the specific technology of a specific vendor, a specific programming language, and the like. Absent. That is, in the web service system 1 according to the present embodiment, transmission / reception of messages independent of each other's application environment can be realized.

  Moreover, there is a secondary effect by constructing the system in such a configuration that does not depend on the environment of each other's application. For example, even when a user who uses the system requests to change the screen layout, only the web application server 7 needs to be changed. In this case, if necessary, the OS related to the web application server 7 can be of a different vendor, and the application program can be described in different program languages. Further, for example, in another system that has already been constructed, the service provided by the web service server 3 can be used without changing the application program.

  The preferred embodiments of the web service system and the like according to the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It will be apparent to those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea disclosed in the present application, and these naturally belong to the technical scope of the present invention. Understood.

The figure which shows schematic structure of the web service system 1 Computer hardware configuration diagram The figure which shows an example of the data which the connection condition table 53 hold | maintains Block diagram showing an overview of the functions of the web application server 7 Block diagram showing an overview of the functions of the web service server 3 Block diagram showing an overview of the functions of the database server 5 Diagram showing details of login process Diagram showing details of service processing Figure showing details of logout processing

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ......... Web service system 3 ......... Web service server 5 ......... Database server 7 ......... Web application server 9 ......... User terminal 11 ......... Network 13 ......... Control part 15 ......... Storage part 17 ......... Media input / output unit 19 ......... Communication control unit 21 ......... Input unit 23 ......... Display unit 25 ......... Peripheral device I / F unit 27 ......... Bus 31 ......... Login processing means 33 ......... Service processing means 35 ......... Logout processing means 37 ......... Connection status management means 51 ......... Database access means 53 ......... Connection status table 55 ......... Web service specific table group 61 ......... User information 63 ......... Login time 65 ......... Logout time 71 ......... Login request means 73 ......... Service request means 75 ......... Loga Doo request means 77 ......... user information associated with means

Claims (9)

A web service system in which a web service requesting device and a web service providing device are connected via a network to transmit and receive messages,
The web service requesting device is:
User information associating means for associating user information uniquely identifying a user with a service request;
Service request means for transmitting the service request to which the user information is added to the web service providing device;
Comprising
The web service providing apparatus includes:
A connection status table that holds a login time and a logout time for each user information;
When the service request is received, the logout time related to the added user information is confirmed. If the logout time has not passed the current time, a time obtained by adding a timeout setting time to the current time is set as the logout time. Connection status management means for updating a record of the connection status table relating to the user information being added as time,
A web service system comprising:   The connection status management means included in the web service providing apparatus further confirms the logout time related to the added user information when the service request is received, and the logout time has passed the current time. The web service system according to claim 1, wherein the process for the service request is terminated. The web service requesting device further comprises a login requesting means for transmitting a login request to which the user information and information necessary for authentication of the user information are added to the web service providing device,
The connection status management means included in the web service providing device further includes, when receiving the login request, if the authentication of the user information is successful, the current time as the login time and the login time. 3. The web according to claim 1, wherein a record of the connection status table relating to the added user information is registered with a time obtained by adding a timeout setting time as the logout time. 4. Service system. The web service requesting device further comprises logout requesting means for transmitting a logout request with the user information added thereto to the web service providing device,
When the logout request is received, the connection status management unit included in the web service providing apparatus further updates the record of the connection status table related to the added user information with the current time as the logout time. The web service system according to any one of claims 1 to 3, wherein: A web service providing device used in a web service system connected to a web service requesting device via a network and transmitting / receiving messages,
A connection status table that holds login time and logout time for each user information that uniquely identifies the user;
When the service request to which the user information is added is received from the web service requesting device, the logout time related to the added user information is confirmed, and if the logout time has not passed the current time, the current A connection status management means for updating a record of the connection status table related to the user information being added, using the time obtained by adding a timeout setting time to the time as the logout time;
A web service providing apparatus comprising:   The connection status management means further confirms the logout time related to the added user information when the service request to which the user information is added is received from the web service requesting device, and the logout time is currently 6. The web service providing apparatus according to claim 5, wherein if the time has passed, the process for the service request is terminated.   The connection status management means further receives the login request to which the user information and the information necessary for the authentication of the user information are added from the web service request device, and when the authentication of the user information is successful. The connection status table record relating to the added user information is registered using the current time as the login time and the logout time as a time obtained by adding a timeout setting time to the login time. The web service providing apparatus according to claim 5, wherein the apparatus is a web service providing apparatus.   The connection status management means is further configured to receive the logout request with the user information added from the web service requesting device, with the current time as the logout time, and the connection status according to the added user information. The web service providing apparatus according to any one of claims 5 to 7, wherein the table record is updated.   A program causing a computer to function as the web service providing apparatus according to any one of claims 5 to 8.

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