JP2002342244A - Server system, and communication control method and program thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect privacy of users, while preventing the malicious actions of users. SOLUTION: A user registers a handle name and receives information service from an information service system by using the handle name. A plurality of handle names are permitted, and the handle name to be used is selected by the user. Information, to be transmitted from a client 1a to the information service system, is added with the handle name, and the rejection of the incoming of the information having the specific handle name is performed by a profile server 115 or the other client, based on the handle name.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a server system suitable for exchanging messages between users using a terminal device, a communication control method and a program therefor.

[0002]

2. Description of the Related Art Conventionally, in this type of system, a plurality of terminal devices and a message exchange server (hereinafter simply referred to as a server) are connected via a communication network, and a message input from one terminal device is transmitted to another terminal device. It is distributed to the device and displayed. When the user sees the displayed message and inputs a response message to the response message into his / her own terminal device, the response message is distributed from the server to another terminal device and displayed.

[0003] Message exchange is one-to-one between two terminal devices.
It is also possible to perform message distribution from a specific terminal device to a plurality of terminals.

[0004]

In such a system, a message sender, a so-called speaker, sometimes slanders another speaker. Also, there is a person who does not want to see a message even if he does not slander.

[0005] In the case of e-mail, if the e-mail address of a person who does not want to receive e-mail is registered in his / her own terminal, incoming e-mail can be rejected. However, in a conventional system for delivering a message, a nickname or the like is usually used, and the nickname also describes a favorite name in the message body of the speaker.

For this reason, in the conventional system, it is difficult for the system operator and the message receiver to specify the speaker of the message, so that the conventional technology has a problem that it is difficult to reject the message.

In view of the above, it is an object of the present invention to reject incoming information from a specific person or refuse to transmit information to a specific person while concealing the privacy of the data sender. An object of the present invention is to provide a server system capable of performing the communication, a communication control method thereof, and a program.

[0008]

To achieve the above object, according to the present invention, there is provided a server system which is connected to a plurality of terminal devices and exchanges messages between the plurality of terminal devices. Source identification information of a message is previously associated with a user of the plurality of terminal devices, and one or a plurality of first source identifications that reject message transmission from the plurality of terminal devices to the own terminal device. Receiving means for receiving information; acquiring means for acquiring second source identification information of the message when a message addressed to another terminal apparatus is received from any of the plurality of terminal apparatuses; If the second transmission source identification information matches any one or more of the first transmission source information received by the receiving means, the message addressed to the other terminal device is sent. Characterized by comprising a communication control means for controlling so as not to provide a message to the other terminal devices.

According to a second aspect of the present invention, there is provided a server system for connecting to a plurality of terminal devices and providing information on users of the plurality of terminal devices to the plurality of terminal devices. A handle name is associated in advance, and accepting means for accepting a handle name of transmission refusal from any of the plurality of terminal devices, and the terminal device of the user having the accepted handle name, Communication control means for controlling so as not to provide information on the user of the terminal device.

According to a third aspect of the present invention, there is provided a communication control method for a server system which is connected to a plurality of terminal devices and exchanges messages between the plurality of terminal devices. Source server identification information is associated in advance, and the server system receives one or a plurality of first source source identification information for rejecting message transmission from the plurality of terminal devices to its own terminal device, and If a message addressed to another terminal device is received from any of the devices, the second
And if the acquired second source identification information matches any of the received one or more pieces of first source information, the message addressed to the other terminal device is sent to the terminal device. It is characterized in that it is controlled so as not to be provided to other terminal devices.

According to a fourth aspect of the present invention, there is provided a communication control method of a server system for connecting to a plurality of terminal devices and providing information on users of the plurality of terminal devices to the plurality of terminal devices. A handle name is associated with the user in advance, and the server system receives a handle name of transmission refusal from any of the plurality of terminal devices, and receives a handle name of the user having the received handle name. The terminal device is controlled so as not to provide information on the user of the arbitrary terminal device.

According to a fifth aspect of the present invention, there is provided a program executed by a server system connected to a plurality of terminal devices and exchanging messages among the plurality of terminal devices, wherein a message is transmitted to a user of the plurality of terminal devices. The sender identification information is associated in advance, and rejects message transmission from the plurality of terminal devices to its own terminal device.
Or, a receiving step of receiving a plurality of first transmission source identification information, and obtaining a second transmission source identification information of the message when a message addressed to another terminal device is received from any of the plurality of terminal devices. And if the second source identification information obtained in the obtaining step matches one or more of the first source information received in the receiving step, a message addressed to the other terminal device And a communication control step of controlling so as not to provide the terminal device to the other terminal device.

According to a sixth aspect of the present invention, there is provided a program executed by a server system connected to a plurality of terminal devices and providing information on users of the plurality of terminal devices to the plurality of terminal devices. A handle name is associated with the user in advance, a receiving step of receiving a handle name of transmission refusal from any of the plurality of terminal devices, and a terminal of the user having the received handle name A communication control step of controlling not to provide information on the user of the arbitrary terminal device.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a system configuration of an information service system including an electronic conference system. In FIG. 1, an information service system includes a communication network 10.
0, a server group 102 of an information service company, and clients (terminal devices) used by a plurality of users connectable to the server group 102 via the communication network 100, for example, 103a, 103b, 104a, 104b, and the like. Server group 102 and clients 103a, 103b, 1
04a and 104b are computer systems, respectively. Note that the communication network 100 may be excluded from the system.

A plurality of types of servers in the server group 102 operate in cooperation to provide various information services. The information service system includes an authentication server (group) 111, a content server (group) 112, a message server (group) 113,
Mail server (group) 114, profile server 115
And a game server (group) 116. The authentication server 111 manages user accounts (login IDs (identifiers)) and passwords. Authentication server 1
11 is the connection status of the user (online / offline)
Alternatively, the address of a client machine of a user who is online may be managed.

The content server 112 provides sports, music, comics, shopping information, and other various information.

The message server 113 transfers a message exchanged between at least two clients.

The mail server 114 provides an electronic mail exchange service between users.

The game server 116 provides an online game. The user plays the game by starting the online game in the game server from the viewer. For example, when the online game is a role-playing game (a game in which a user plays as a game character), the user can play a role-playing game with another user.

The profile server 115 manages, for each user account (so-called login ID), a profile (user information) of the user corresponding to the account. The user can register his / her profile and a handle name used for game and message exchange from the viewer to the profile server 115. The profile includes information indicating whether the user's client is currently connected to the information service system, information services used in the information service system, and a handle name registered in advance by the user. included. A plurality of sets of handle names are allowed for each type of information service.

In this embodiment, the profile server 11
In the message transfer 5 described later, communication control is performed on the client of the user who has registered in the blacklist so that an off-line message or the like sent from the client of the user having a specific handle name is rejected.

The profile server 115 performs communication control so that the handle name of the user who has registered in the black list is not notified online to the client using the handle name registered in the black list.

The clients 103a and 103b are home (video) game machines, and can use, for example, PlayStation 2 (registered trademark) of Sony Corporation.

The clients 104a and 104b are general-purpose personal computers (hereinafter, referred to as PCs). The client can load and execute a program described below according to the present invention from a recording medium such as a CDROM. Client 103a, 10
3b, 104a, and 104b may be simply referred to as a client. The communication network 100 includes a server group 1
02 and the clients 103a, 103b, 10
4a and 104b are connected. Communication network 100
In this embodiment, the Internet is assumed.
For data transmission / reception, TCP / IP, HTTP (hypertex
t transfer protocol), SMTP (simple mail trans)
An ordinary protocol such as fer protocol (FTP) or FTP (file transfer protocol) may be used.

In this embodiment, a case where the client is a home video game device 103a will be briefly described. FIG. 2 shows an example of the configuration of the video game device.
The main body 2 of the video game device 1 includes a main control unit 11, a RAM,
12, hard disk drive (HDD) 18, sound processing unit 14, graphic processing unit 15, CD-ROM
It has a drive 16, a communication interface 17, and an interface unit 13.

The main control unit 11 has a CPU and a ROM. The CPU performs system control based on a system program loaded in the ROM, and loads game software installed on a hard disk onto the RAM 12 and executes the game software.

The RAM 12 temporarily stores input / output data for the CPU. The HDD 18 reads and writes data from and to a hard disk. The sound processing unit 14 converts a digital audio signal into an analog audio signal and outputs the analog audio signal to the speaker 62 of the output device 6. Graphic processing unit 1
Reference numeral 5 stores an image to be displayed on the display screen 61 of the display of the output device 6 and provides the image to the display.

The CD-ROM drive 16 is a CD-ROM
4 and read the game software and related data from the CD-ROM 4. The communication interface 17 communicates with an external device via the Internet 100.

The interface unit 13 inputs various information for a game from the input device (controller) 3 and reads and writes game-related data from and to the memory card 5.

The game apparatus main unit 201 starts a viewer and accesses the server group 102. The television receiver outputs image and sound data from the game apparatus main body 201.
The controller inputs a user's instruction to the game device main body 2. The viewer is installed in the game device main body from the CDROM4.

In the present embodiment, the program of FIG. 4 is incorporated in the viewer, and the CPU of the game apparatus main body executes the program of FIG. 4 to execute the call rejection processing according to the present invention.

First, the general processing contents of the entire system of FIG. 1 will be described, and then the processing contents of each device will be described.

(Registration of Handle Name) When registering a member of the information service system, the user registers a handle name used by the user. One or more handle names are allowed.
Registration may be performed from the client, or may be performed using a postcard or the like. The registered handle name is registered in a user-related database in the profile server in association with a login user ID (hereinafter, referred to as a login ID) assigned to the user. In the case of online registration from a client, the profile server performs automatic registration processing, and in the case of postcard registration, information necessary for registration is input from the keyboard of the profile server.

(Registration of Black List and Friend List) When a user accesses the server group 102 from a client, authentication is performed by a login ID by an authentication server, and communication between each server and the client on the information service system is permitted. Is done. In addition, the user operates a menu on the display screen of the client to select a registration process to a blacklist (a list of rejection / transmission rejection targets). In response to this selection, a window screen as shown by reference numeral 200 in FIG. 9 is displayed on the display screen of the client, so that the user can use the virtual keyboard (or keyboard) to handle the name of the user who wants to reject the incoming call. (Also known as a nickname) and rejection level. In this embodiment, rejection level 1 and rejection level 2 are prepared.

The rejection level 1 is a level for rejecting a message having the same handle name as the registered handle name. Rejection level 2 is a level for rejecting incoming messages for all messages and the like of other handle names of the user having the handle name.

The input handle name and rejection level are sent to the profile server 115 and registered in a black list for each user in a storage device in the system. FIG. 3A shows the data structure of this black list. The blacklist is provided with areas for storing a login ID of a user whose call is to be rejected and a plurality of handle names possessed by the user. An incoming call rejection flag indicating whether to execute incoming / outgoing call rejection is added to each handle name.

In this embodiment, when a client registers a handle name for rejecting an incoming call such as an offline message and rejecting transmission of an online notification from a client, another handle name registered by a user having the handle name is registered. The search is performed on the user database (profile) in the profile server 115, and the profile server 115 acquires the login ID of the user registered in the blacklist and one or more handle names owned by the user. The profile server 115 writes on / off of the incoming call rejection flag corresponding to the obtained login ID, handle name, and rejection level in the blacklist.

More specifically, flag information indicating the necessity of call rejection is added to each handle name shown in FIG.
In the case of, the flag of the corresponding handle name may be turned on (set to bit 1), and in the case of level 2, the flag information of all the handle names may be turned on.

This embodiment has an online notification function for notifying the client of another user according to the disclosure level registered in the friend list in advance when the client logs on to the server group 102. For this reason, the friend list is stored in the profile server 115.
Provided in a storage device such as a hard disk. The friend list is a list including the login ID of the registration applicant, the login IDs of other users who are permitted to be notified online, their handle names, and the disclosure level.

When the registration applicant logs in and selects the friend list registration menu from the menu selection on the client display screen, a window screen 200 shown in FIG. 9 is displayed. Here, the user may select the handle name of the person to notify and the field name in which the handle name is used (for example,
Chat room name, game name, etc.). The input information is written in the friend list in the profile server 115.

(Rejection of Message Reception) When a user inputs a message from a client, the input message is transferred to the message server 113 with at least the handle name of the user (handle name of the transmission source) added. The message server 113 determines whether the client of the message transmission destination is connected to the information service system with reference to the status information of the profile server. If the destination client is not connected to the information service system, a received message (so-called offline message) is stored on the internal hard disk
Store. The stored received message is determined by the profile server 115 as to whether it is a message from a user whose handle name is registered in the blacklist, and if the message is from a blacklist registrant, the message is discarded. Thereafter, when the user of the message destination logs in to the information service system, the stored message is sent to the client of the user.

On the other hand, when the client of the user of the message transmission destination is connected to the information service system, the message server 113 transmits the received message (so-called online message) to the client of the transmission destination. When the client receives the message, it checks the message against the black list stored in the client and performs a message rejection process. Therefore, the message from the user registered in the blacklist is not displayed on the client of the transmission destination.

When the client accesses the information service system for the rejection of the call on the client side, the profile server 115 downloads the blacklist of FIG.
The downloaded blacklist is protected from being displayed on the display.

(Rejection of Transmission of Online Notification) When a client logs in to an information service system and sends an instruction or the like from the client to the information service system in order to use some information service, for example, a message transfer service, a game service or a chat service. , The user's login ID and handle name are added to the instruction. In the present embodiment, a plurality of handle names are allowed, and the user can select a handle name to be used from a plurality of registered handle names on the display screen on the client using a pointing device or the like. The selected handle name is the RA inside the client.
M or temporarily stored in the hard disk and used for transmission to the information service system.

The exchange of the status information of the user is repeatedly performed at regular intervals between all the logged-in clients and the profile server 115, and the profile server 115 sends an online notification corresponding to the disclosure level to each client. I do. The name of the handle to be published is included in the online notification.

In this embodiment, the following disclosure levels are prepared. Disclosure level 1: Inform other users who are registered in the friend list and receive the same information service that they are online (connected) by a handle name. Disclosure level 2: A user registered in the friend list is notified by a handle name that he or she is online (connected) irrespective of the information service currently received. Disclosure level 3: Inform all users connected to the system that they are online (connecting) by a handle.

When notifying a certain user of the handle name of another online user, the handle name described in the blacklist registered by the certain user is obtained from the online notification prior to the notification. Excluded.

(Rejection of Mail Reception) Regarding rejection of mail, if the user sets rejection level 1 or 2 at the time of blacklist registration, mail reception rejection becomes possible. Specifically, when the user creates a call rejection list as shown in FIG. 3B on the display screen of the client,
The created blocked call list is saved on the client,
Thereafter, among the received mails received by the client from the mail server 114 and destined for itself, the mails whose source addresses are the mail addresses listed in the call rejection list are rejected by the client, and the client displays the message. It is not displayed on the screen.

Having described the functions of rejecting incoming calls and rejecting various types of information, specific processing on the server and client sides will now be described.

(Processing by Client) FIG. 4 shows a processing procedure for rejecting incoming calls on the client side and related processing. The processing procedure in FIG. 4 describes only processing related to the present invention, and other processing is omitted. 4 is mounted in a ROM or a hard disk in the client in the form of a program and executed by the CPU.

In FIG. 4, when the program of FIG. 4 is started, an initialization process is executed (step S10).
In the initialization process, a login process to the information service system is performed. It is assumed that the user is operating the client A. After the login process, the profile server 115 downloads the internally stored user A blacklist (see FIG. 3A) to the client based on the login ID of the user A used in the login process. The downloaded blacklist is stored in the RAM or the hard disk in the client (Step S20).

The client is a message server 113
(Step S3)
0). If a message has been sent, the message is received and temporarily stored in the RAM. Since the sending client attaches the handle name X of the user B to the message, the client refers to the blacklist, and the handle name X is registered in the blacklist and the rejection level is turned on. It is determined whether or not it is (step S31).

If the determination is YES, the message temporarily stored in the RAM is discarded (step S3).
3).

On the other hand, if a NO determination is obtained, RA
The message temporarily stored in M is displayed on the display (step S32). Note that the temporarily stored message may be moved to a storage area of the RAM, the arrival of the message may be guided, and then the message may be displayed.

If no message is sent in step S30, the client accesses mail server 114 and determines whether or not an electronic mail addressed to the user has arrived at his / her mailbox in mail server 114 (step S30). Step S40).

When the e-mail has arrived, the e-mail in the mailbox is temporarily taken into the RAM in the client, and there is an e-mail of the same source as the e-mail address registered in the call rejection list. It is determined whether or not this is the case (step 41).

If the determination is YES, the corresponding e-mail is discarded from the RAM (step S4).
3). On the other hand, if a NO determination is obtained, the e-mail temporarily stored in the RAM is moved to a storage area on the RAM, and a mail arrival guide is displayed, and a user's display instruction is displayed as in the conventional case. (Step S4)
2).

If the determination in step S40 is NO, that is, if no e-mail has arrived, it is determined whether or not the user A has instructed blacklist registration / correction. At this time, if user A has instructed the registration of the blacklist, a YES determination is obtained, and the procedure proceeds from step S50 to step S60.
Here, the previously downloaded blacklist is updated with the handle name and rejection level input by the user (step S60). The updated black list is uploaded to the profile server 115 and stored in the profile server 115 in association with the login ID of the user A (step S70).

If the instruction to register the blacklist has not been issued, the procedure proceeds from step S50 to step S30.
Return to

Hereinafter, the client accepts the registration of the user's black list and rejects incoming messages and e-mails while repeatedly executing the above-described processing.

The handle name of another user connected to the information service system is sent from the profile server 115 to the client at regular intervals while the client of the user A is connected to the information service system. The client sets the received handle name to the reference numeral 201 in FIG.
It is displayed in the form of an icon and a handle name as shown by.
This process may be performed by an interrupt process of a fixed period,
It may be incorporated in the processing procedure of FIG. Although the process of registering the handle name is not shown in FIG. 4, a step of receiving the input of the handle name, its disclosure level and the login from the input device 3 and a step of transmitting the received information to the profile server 115 May be added to the processing procedure of FIG. 4, and those skilled in the art will be able to create a program for inputting and transmitting the above information.

(Processing of Profile Server 115) FIGS. 5 to 8 show processing procedures executed on the profile server 115 side. FIG. 5 shows a main processing procedure, and FIGS. 6 to 8 show details of each processing in FIG. These processing procedures are implemented in a storage device such as a hard disk in the profile server in the form of a program language executable by the CPU of the profile server 115.

The processing procedure of FIG. 5 is repeatedly executed at a constant cycle. The profile server 115 receives the transmission information from the client, and registers the blacklist registration information (including the correction) in the internal hard disk in step S100 in the login I of the blacklist registrant.
Save in association with D. The login ID is detected from the login ID used when the client logs in to the information service system.

More specifically, as shown in FIG. 6, it is determined whether or not the information received from the client is an instruction to register a blacklist. If the determination is YES, the blacklist is received from the client. To update the blacklist on the hard disk (step S101 → S
102).

Next, in step S110, the profile server 115 obtains the status information of the client on the hard disk, that is, the handle name of the client connected to the information service system, and uses the obtained handle name as an online notification as the connected client. Send to At this time, the handle name registered in the blacklist is excluded from the online notification. This processing will be described later with reference to FIG.

The profile server 115 performs an offline message (message stored by the message server when the client of the message transmission destination is not connected to the information service system) exchange processing in step S120.
Run with This process will be described with reference to FIG.

The online status notification processing in step S110 in FIG. 5 will be described. In FIG. 7, after the profile server 115 acquires the status information of all the clients stored in the hard disk on the RAM, the profile server 115 only displays the handle name currently used by the client for the client that has requested the download. Acquire from profile (Step S111 → S112 → S
113).

If the acquired handle name is described in any of the registered blacklists and the rejection flag is on, the level 1 or level 2 rejection registration has been performed, and the profile server 115 From the notification, the handle name of the registrant of the blacklist is discarded. The method of destruction is to acquire at the beginning of the handle name of the offline target, delete the handle name that is not sent from the acquisition result, and check if the handle name of each offline target is blacklisted And a method of collecting only handle names that are not included in the blacklist may be used.

The handle names collected in this way are selected according to the disclosure level and transmitted to the requesting client as an online notification (step S114 → S
116).

If the handle name of the user of the requesting client is not described in all the blacklists, the conditions defined at the disclosure level are selected from among the handle names currently connected to the information service system. A satisfactory handle name is selected, and the selected handle name is sent to the requesting client (step S114 → S1).
15).

The details of the offline message exchange processing in step S120 in FIG. 5 will be described. In FIG. 8, when an offline message is received, the profile server 11
Reference numeral 5 refers to the blacklist of the handle name of the transmission destination attached to the received offline message, and determines whether or not the handle name of the transmission source of the offline message is described in the blacklist (whether the rejection flag is on). (Step S121 → S122). If the determination is YES, the message is received by the message server 113,
The stored offline message is discarded (step S124). On the other hand, if a NO determination is obtained in step S122, the stored offline message is transmitted by the message server 113 when the transmission destination client is connected to the information service system (step S123).

The processing of the message server 113 and the mail server 114 is the same as the conventional one, and a detailed description will be omitted.

As described above, in this embodiment, the profile server 115 rejects an incoming call based on the handle name described in the blacklist for an offline message, and a client (terminal device) that receives the online message for an online message. Performs call rejection using the same blacklist as described above.

Also, regarding the online notification executed by the profile server 115, the profile server 11
5 is not notified to the client of the user having the handle name described in the black list or the related handle name of the user who desires transmission refusal.

As a result, the information service can conceal a user ID and a personal name that identify an individual user, and can refuse the reception of information such as a message to a malicious user, and can provide an information service system. It is possible not to notify the handle name of the user connected to the online.

The following embodiment can be carried out in addition to the above embodiment. 1) Although the server system for rejecting the reception of the offline message and the transmission of the online notification is a profile server in the above-described embodiment, the message server may have a function of rejecting the reception of the offline message. Distributed processing may be performed by a message server. 2) In the above embodiment, the information service system provides the information service via the Internet, but the communication network may be a LAN or other existing communication network. 3) In the above-described embodiment, at least the handle name of the client user is added to the information sent from the client to the information service system, and it is checked whether the added handle name is the same as the previously registered handle name. Is performed by the profile server 115, it is possible to prohibit access by malicious persons other than members. 4) On the client side, a handle name to be used may be selected from a plurality of handle names at an arbitrary time using a graphical user interface or the like.

Various modifications other than the above-described embodiment are possible. However, as long as the modifications are based on the technical idea described in the claims, the modifications are within the technical scope of the present invention. Become.

[0079]

As described above, according to the present invention, transmission of a message is rejected by transmission source identification information such as a handle name, so that reception of information such as a message from a malicious person is rejected. can do. Further, since the transmission source identification information is not related to the personal information, the privacy of the individual is protected.

Further, according to the present invention, since information related to the user such as an online notification is not sent to the terminal device of the user having the handle name by registering the handle name, the information of the user is not transmitted to the specific user. Can be kept secret.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a system configuration according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating an example of a configuration of a game device.

FIG. 3A is an explanatory diagram showing a configuration of a blacklist, and FIG. 3B is an explanatory diagram showing an example of a call rejection list.

FIG. 4 is a flowchart illustrating a processing procedure executed by a client.

FIG. 5 is a flowchart illustrating a processing procedure executed by a profile server.

FIG. 6 is a flowchart illustrating a detailed processing procedure of the processing in FIG. 5;

FIG. 7 is a flowchart illustrating a detailed processing procedure of the processing in FIG. 5;

FIG. 8 is a flowchart illustrating a detailed processing procedure of the processing in FIG. 5;

FIG. 9 is an explanatory diagram illustrating an example of a display screen of a client.

[Explanation of symbols]

 113 Message server 114 Mail server 115 Profile server

Claims (6)

[Claims] In a server system connected to a plurality of terminal devices and exchanging messages among the plurality of terminal devices, message source identification information is previously associated with users of the plurality of terminal devices. Receiving means for receiving one or a plurality of first transmission source identification information for rejecting message transmission from the plurality of terminal devices to the own terminal device; and receiving from one of the plurality of terminal devices to another terminal device. When a message is received, acquiring means for acquiring second transmission source identification information of the message, and the second transmission source identification information acquired by the acquiring means is one or more second transmission source identification information received by the receiving means. Communication control means for controlling not to provide a message addressed to the other terminal device to the other terminal device when the source information matches any one of the transmission source information A server system comprising: 2. A server system connected to a plurality of terminal devices and providing information on users of the plurality of terminal devices to the plurality of terminal devices, wherein a handle name corresponds to a user of the plurality of terminal devices in advance. Receiving means for receiving a handle name of transmission refusal from any of the plurality of terminal devices; and a user of the arbitrary terminal device as a terminal device of a user having the received handle name. Communication control means for controlling so as not to provide information about the server system. 3. A communication control method for a server system connected to a plurality of terminal devices and exchanging messages between the plurality of terminal devices, wherein a message transmission source identification information is provided to a user of the plurality of terminal devices. The server system is associated in advance, and the server system receives one or a plurality of first transmission source identification information for rejecting message transmission from the plurality of terminal devices to its own terminal device, and receives from one of the plurality of terminal devices. When a message addressed to another terminal device is received, second source identification information of the message is obtained, and the obtained second source identification information is one or more pieces of the received first source information. If any of the matches,
A communication control method for a server system, wherein control is performed such that a message addressed to the other terminal device is not provided to the other terminal device. 4. A communication control method for a server system connected to a plurality of terminal devices and providing information on the users of the plurality of terminal devices to the plurality of terminal devices, wherein a handle for the users of the plurality of terminal devices is provided. The server system receives a handle name of transmission refusal from any of the plurality of terminal devices, and the terminal device of the user having the received handle name receives the handle name. A communication control method for a server system, wherein control is performed so as not to provide information on a user of an arbitrary terminal device. 5. A program executed in a server system connected to a plurality of terminal devices and exchanging messages between the plurality of terminal devices, wherein a source identification information of a message is provided to a user of the plurality of terminal devices. A receiving step of receiving one or a plurality of first transmission source identification information for rejecting message transmission from the plurality of terminal devices to its own terminal device; and When a message addressed to the terminal device is received, an acquiring step of acquiring second source identification information of the message, and the second source identification information acquired in the acquiring step,
One or more first received by the receiving step
A communication control step of controlling not to provide a message addressed to the other terminal device to the other terminal device when the source information matches any one of the transmission source information. 6. A program executed by a server system connected to a plurality of terminal devices and providing information on the users of the plurality of terminal devices to the plurality of terminal devices, wherein the program is executed by a user of the plurality of terminal devices. A handle name is associated in advance, a receiving step of receiving a handle name of transmission refusal from any of the plurality of terminal devices, and the terminal device of the user having the received handle name has the optional A communication control step of controlling not to provide information on the user of the terminal device.