JP2007200361A - Event sharing system, event sharing method and event sharing program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an event sharing system, a host, an event sharing method and an event sharing program, in which delivery of an event can be appropriately performed even if the form of a network is changed in sharing of the event by a plurality of hosts. <P>SOLUTION: Each host stores information for an event server in server information 203, stores a host list ranking a plurality of hosts in a host list 204, and transmits an event which occurred to an event server shown in the information stored in the server information 203. When the transmission of the event to the event server is not successful, the host updates the information stored in the server information 203 with a host ranked next as event server in the host list as a new event server, and transmits the event that failed to transmit to the new event server. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an event sharing system for sharing an event among a plurality of hosts, a host applied to such an event sharing system, an event sharing method, and an event sharing program.

  Conventionally, a system has been developed in which a plurality of hosts are connected to each other via a network to perform communication.

  In the system as described above, an event may be shared by a plurality of hosts. By sharing an event, each host can acquire the same event and perform application processing, and can be applied to a collaboration tool.

A collaboration tool is a tool that can be used in cooperation at multiple points. For example, it is a tool that allows two people far from each other to edit while viewing the same tool screen.
JP 2001-34592 A

  However, in the case of the prior art in which an event is shared by a plurality of hosts as described above, the following problems have occurred.

  That is, when an event is shared by a plurality of hosts, the event is serialized (serialized) by a specific host in order to keep the order of the events, and the event is transmitted to a plurality of other hosts. Such a specific host is called a management server or an event server.

  Event serialization means arranging events in order (serial). That is, in event serialization, when a plurality of events are received from a plurality of hosts, they are arranged in order and notified to other hosts.

  For example, when an event a occurs from the host A and an event b occurs from the host B at the same time, the event is transmitted in the order of a and b.

  In this case, when the specific host goes down for some reason, or when the network to the specific host is disconnected, the event may not be transmitted correctly.

  In order to cope with such a problem, in the technique disclosed in Japanese Patent Laid-Open No. 2001-34592, when a node of the management server is deleted, communication with the deleted node of the management server is periodically performed in advance. Each node determines a new management server based on the server priority table and updates the network configuration information.

  The updated network configuration information is regularly exchanged with a newly determined management server node (paragraph 73 of the above publication).

  However, the technique described in the above publication can be applied only to a system in which each node periodically communicates with a node of the management server.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to appropriately distribute an event even when a network form changes when an event is shared by a plurality of hosts. An event sharing system, a host, an event sharing method, and an event sharing program are provided.

  Here, the change in the form of the network corresponds to, for example, a case where a failure occurs in the host or the network or a case where the host leaves the network.

  In order to achieve the above object, an event sharing system according to the present invention is an event sharing system in which a plurality of hosts are connected by a network, and the host stores server information storage means for storing information related to an event server; Host list storage means for storing a host list in which a plurality of hosts are ranked, event transmission means for transmitting an event that has occurred to an event server indicated by information stored in the server information storage means, and the event transmission When the event is not successfully transmitted to the event server, the host ranked next to the event server in the host list is stored in the server information storage unit as a new event server. Server information updating means for updating information, and DOO transmission means, and transmits the event that the transmission is not successful in the new event server.

  The event sharing system according to the present invention is an event sharing system in which a plurality of hosts are connected via a network. The host is a host in which a plurality of hosts are ranked and one of them is an event server. Host list storage means for storing a list, event transmission means for transmitting an event that has occurred to the event server indicated in the host list, and transmission of the event to the event server by the event transmission means has not been successful Server information updating means for performing update processing on the host list with the host ranked next to the event server in the host list as a new event server. The event that was not successfully transmitted is designated as the new event. And transmits to over server.

  Also, in the event sharing system according to the present invention, the host receives an event transmitted from another host, and received event transmission for transmitting the received event to each host based on the host list. And host list updating means for deleting from the host list hosts for which event transmission by the received event transmitting means has not been successful.

  Furthermore, the host according to the present invention is the host in the event sharing system in which a plurality of hosts are connected by a network, and a server information storage means for storing information relating to the event server, and a host in which the plurality of hosts are ranked A host list storage means for storing a list; an event transmission means for transmitting an event that has occurred to an event server indicated by the information stored in the server information storage means; Server information update means for updating information stored in the server information storage means with a host ranked next to the event server in the host list as a new event server when transmission is not successful; The event transmission means includes the transmission. And transmitting an event that did not to the new event server.

  The host according to the present invention is the host in the event sharing system in which a plurality of hosts are connected by a network, and stores a host list in which a plurality of hosts are ranked and one of them is an event server. Host list storage means, event transmission means for transmitting an event that has occurred to the event server indicated in the host list, and when the event transmission means has not successfully transmitted the event to the event server, Server information updating means for performing update processing on the host list with the host ranked next to the event server in the host list as a new event server, wherein the event sending means has succeeded in the transmission Send the event that did not occur to the new event server. Characterized in that it.

  Further, the host according to the present invention includes an event receiving unit that receives an event transmitted from another host, a received event transmitting unit that transmits the received event to each host based on the host list, and the received event. Host list update means for deleting from the host list hosts for which event transmission by the sending means has not been successful.

  Furthermore, the event sharing method according to the present invention is an event sharing method applied to an event sharing system in which a plurality of hosts are connected by a network, and the host stores information related to the event server in a server information storage means. A server information storage step, a host list storage step of storing a host list in which a plurality of hosts are ranked in the host list storage means, and an event that has occurred in the event server indicated by the information stored in the server information storage means An event transmission step of transmitting the event, and when the event transmission step does not succeed in transmitting the event to the event server, a host that is ranked next to the event server in the host list is assigned as a new event server. Information stored in the server information storage means It characterized in that it comprises a server information updating step of updating, and the transmission step of transmitting the event that the transmission is not successful in the new event server.

  The event sharing method according to the present invention is an event sharing method applied to an event sharing system in which a plurality of hosts are connected by a network, and the host is ranked among a plurality of hosts, and one of them is ranked. A host list storage step of storing a host list having the host as an event server in a host list storage means, an event transmission step of transmitting an event that has occurred to the event server indicated in the host list, and the event by the event transmission step Server information is updated when the host that is ranked next to the event server in the host list is updated as a new event server when transmission to the event server is not successful Before the process and the event that the transmission was not successful Characterized in that it comprises a transmission step of transmitting the new event server.

  The event sharing method according to the present invention includes an event reception step in which the host receives an event transmitted from another host, and a reception event transmission in which the received event is transmitted to each host based on the host list. And a host list update step of deleting from the host list hosts for which event transmission by the reception event transmission step has not been successful.

Furthermore, the event sharing program according to the present invention is an event sharing program applied to the host in an event sharing system in which a plurality of hosts are connected via a network, and stores information related to the event server. Storage means, host list storage means for storing a host list in which a plurality of hosts are ranked, event transmission means for transmitting an event that has occurred to an event server indicated by information stored in the server information storage means, the event If transmission of the event to the event server by the transmission means is not successful, the host ranked next to the event server in the host list is stored in the server information storage means as a new event server. Server that updates information Distribution updating unit, and characterized in that to function as transmission means for transmitting the event that the transmission is not successful in the new event server.

  The event sharing program according to the present invention is an event sharing program applied to the host in an event sharing system in which a plurality of hosts are connected by a network, and the hosts are ranked among the hosts, of which Host list storage means for storing a host list having one host as an event server, an event transmission means for transmitting an event that has occurred to the event server indicated in the host list, and an event server for the event by the event transmission means Server information updating means for performing update processing on the host list with the host ranked next to the event server in the host list as a new event server when the transmission of the host list is not successful, and The event was not successful Characterized in that the functioning of the bets as a transmission means for transmitting to said new event server.

  The event sharing program according to the present invention includes an event receiving unit that receives the host from an event transmitted from another host, and a received event transmitting unit that transmits the received event to each host based on the host list. And, it is made to function as a host list updating unit for deleting a host from which the event transmission by the received event transmitting unit was not successful from the host list.

  The event referred to in the present invention is an event that occurs asynchronously with the operation of the application. For example, in the case of an application whose screen changes when the mouse is clicked, an event is generated when the mouse is clicked. Then, the screen is changed by the event processing.

  In addition, in the case where the transmission of the event according to the present invention is not successful, not only the case where the data regarding the event is not completely transmitted but also the case where only a part of the data regarding the event is transmitted, that is, the other party It can also be included when there is a missing data regarding the event sent to.

  As explained above, even when a network failure occurs and the network is divided, or when a failure occurs on a host that is an event server, by automatically selecting an event server, it Events can be shared without problems without exchanging network configuration information.

  In the present invention, since the host does not need to periodically communicate with the event server, communication traffic is reduced, the load on the event server is reduced, and the event server needs to constantly update information through communication with the event server. Therefore, even when the event server goes down, the server can be switched immediately, and even when the network is divided into a plurality of events, a plurality of event servers can be provided.

  By sharing the event, the same event can be acquired at a plurality of points and the application can perform processing, which can be applied to a collaboration tool.

  Exemplary embodiments of the present invention will be described in detail below with reference to the drawings. However, the dimensions, shapes, relative arrangements, and the like of the component parts described in this embodiment are not intended to limit the scope of the present invention only to those unless otherwise specified.

  Moreover, in the following drawings, the same number is attached | subjected to the components similar to the components described in above-mentioned drawing. The description of the first embodiment of the event sharing system according to the present invention described below also serves as the description of the host, the event sharing method, and the event sharing program according to the present invention.

(First embodiment of event sharing system)
A first embodiment of an event sharing system according to the present invention will be described with reference to the drawings. FIG. 1 shows an overall configuration diagram of a first embodiment of an event sharing system according to the present invention.

  In the event sharing system shown in FIG. 1, six hosts of a host A 101, a host B 102, a host C 103, a host D 104, a host E 105, and a host F 106 are connected to each other by a network 107. However, in this embodiment, an example in which six hosts are connected to each other will be described. However, in the present invention, the number of hosts is not limited to six, and may be any number of two or more.

  Further, the hosts shown in FIG. 1 can communicate with each other bidirectionally. In addition, a one-way communication host that performs only transmission or reception may be connected to the network 107.

  The network 107 shown in FIG. 1 is not particularly limited, and the network 107 may be the Internet using TCP / IP.

  Furthermore, the network 107 is not limited to the Internet, and may be a network using or using any other protocol such as WAP (wireless application protocol).

  The Internet may be IPv4 or IPv6, and both may be used together. The network may be wired or wireless, and both may be used together.

  Further, in the following description, a personal computer will be described as an example of the host shown in FIG. 1. However, the host is not limited to a personal computer, and other than that, a PDA (Personal Digital Assistant), a mobile phone, a car navigation system・ Digital home appliances that integrate computers with systems and household appliances can also be hosts.

  Next, the function of the host shown in FIG. 1 will be described with reference to FIG. FIG. 2 is a block diagram showing functions of the host shown in FIG. Note that each of the hosts shown in FIG. 1 has all the functions shown in FIG.

  The host functions shown in FIG. 2 and the operation of the host described below are performed by a CPU (not shown) provided in the host as a single unit, together with other components, or a main storage unit, a CD-ROM, a hard disk, etc. Processing is performed in cooperation with a program stored in the auxiliary storage unit. Further, this program may be downloaded to each host via the network 107.

As shown in FIG. 2, the host includes a server unit 201, a client unit 202, server information 203, and a host list 204.

  The server unit 201 is a part that functions when the host operates as a server. The server unit 201 includes an event reception unit 205, an event transmission unit 206, and a host list update unit 207, which will be described below.

  The event receiving unit 205 is a part that receives an event from a host that has become a client (hereinafter, also simply referred to as a client).

  The event transmission unit 206 is a part that transmits an event sent from the client to the hosts indicated in the host list stored in the host list 204.

  The host list update unit 207 is a part that updates the host list when there is a host in the host list that cannot be transmitted.

  The server information 203 shown in FIG. 1 is a database for storing information related to the current event server.

  The server information 203 stores event server information as shown in FIG. 3, for example. In the example shown in FIG. 3, the current event server is host A. FIG. 3 is a conceptual diagram of information stored in the server information shown in FIG.

  The host list 204 shown in FIG. 1 is a database that stores a host list in which hosts connected to the event sharing system are ranked.

  For example, a host list as shown in FIG. 4 is stored in the host list 204. FIG. 4 is a conceptual diagram of information stored in the host list shown in FIG.

  In the host list shown in FIG. 4, the list is created in the order of host B, host C, host D, host E, and host F, with host A as the highest priority. The order of the host list is used when determining an event server, as will be described later.

  This host list is provided in common for each host shown in FIG. 1 in the initial state.

  Next, the description returns to FIG. The client unit 202 shown in FIG. 2 is a part that functions when the host operates as a client.

  The client unit 202 includes an event transmission unit 208 and a server information update unit 209.

  The event transmission unit 208 is a part that transmits the generated event to the event server when the event occurs in the client. In addition, when the event transmission to the event server is not successful, the event transmission unit 208 transmits the event again to the new event server.

  The server information update unit 209 is a part that, when an event is transmitted to the event server, determines whether the event server is operating and updates the server information after referring to the destination list.

  Next, in the event sharing system configured as described above, an operation before a change in the network form will be described with reference to FIGS.

  For example, when an event occurs in the host F106, this event is transmitted to the current event server host A101 (1).

  Similarly, the host A 101 that has received an event from each other host serializes each event, and then distributes these events to each host ((2), (3), (4), (5) (6)).

  As described above, in this embodiment, one host serves as an event server, and events are shared.

(When a change occurs in the network configuration)
Next, a case where a change occurs in the network form in the event sharing system of this embodiment will be described. First, as an example of a change in the network form, a case where network division occurs will be described. Here, the division of the network means that communication cannot be established with respect to the network of the other party.

  As such network division, for example, a case where a failure occurs in the network 107 can be considered.

  Hereinafter, the operation of the present embodiment when a change occurs in the network form will be described with reference to FIG. 5, FIG. 6, FIG. 7, and FIG. FIG. 5 is an overall configuration diagram in the event sharing system shown in FIG. 1 when a division occurs in the network. FIGS. 6, 7 and 8 are flowcharts of operations of the event sharing system shown in FIG. It is.

  First, before the fragmentation shown in FIG. 5 occurs, the host A101, host B102, host C103, host D104, host E105, and host F106 are connected to the network 107 and are in a state where they can communicate with each other. Suppose.

  In addition, the host A 101 plays the role of an event server. Further, all the hosts have host lists arranged in the order of “Host A, Host B, Host C, Host D, Host E, and Host F”. This host list may be the host list shown in FIG. 4 in the following description.

  Then, as shown in FIG. 5, a failure occurred in the network 107, and the network 107 was divided into a group of “host A, host B, host C” and a group of “host D, host E, host F”. .

  Based on this premise, an example of event server selection when viewed from the host E105 and an example of server selection when viewed from the host C103 are shown below.

(Example of event server selection seen from host E)
First, the host E105 transmits an event to the host A101, which is an event server (S601).

  Since the network 107 is divided, there is no response from the host A 101 to the host E 105 (S602, No). Therefore, the host E105 deletes the host A101 from the host list shown in FIG. 4 (S603, S701).

  Next, the host E105 sets, in the server information (FIG. 3), the host B, which is the host next to the host A101, from the host list shown in FIG. 4 as an event server (S702).

  Next, the host E105 tries to transmit an event to the host B102 newly set as the event server (S601).

  Similarly, the host E105 deletes the host B102 from the list and transmits an event to the host C103 because there is no response from the host B102 because the network 107 is divided.

  Further, since the network 107 is disconnected and there is no response from the host C103, the host E105 deletes the host C103 from the list and transmits an event to the host D104.

  Then, since there is a response from the host D104, the host E105 sets the host D104 as an event server (S602, Yes).

  Subsequently, the host E105 handles the host D104 as an event server.

(Example of event server selection seen from host C)
The host C103 transmits an event to the host A101, which is an event server (S601).

  Since there is a response from the event server A101, the host C103 treats the host A101 as an event server thereafter (S602, Yes).

(Event server operation)
Next, the processing of the event server after the network form has been changed will be described with reference to FIG.

  A host that receives an event from another host becomes an event server. Then, the event server that has received the event from the other host transmits the received event to each host indicated in the host list (S801, S802).

  Next, the event server determines whether or not the event transmission to each host is successful (S803). For example, the host A101, which is the event server shown in FIG. 5, succeeds in event transmission to the host B102 and the host C103, but does not succeed in event transmission to the host D104, the host E105, and the host F106.

  Then, the event server performs an update process for deleting a host whose event transmission was not successful from the host list by the process of the host list update unit 207 shown in FIG. 2 (S804), and then ends the operation.

  In this way, even if the network is divided due to a network failure and the network configuration is changed, each host in the event sharing system is automatically based on the host list stored in the event server. Can be selected and event distribution can be performed. Therefore, even if network configuration information is not transmitted regularly, it is possible to share an event and to construct a network that can flexibly cope with a change in network configuration.

  Also, in this embodiment, each host does not need to periodically communicate with the event server, so communication traffic is reduced, the load on the event server is reduced, and the event server constantly updates information through communication with the event server. Therefore, even when the event server goes down, the server can be switched immediately, and even when the network is divided into a plurality of events, a plurality of event servers can be provided.

(If the network configuration is changed due to an event server failure)
Next, in the event sharing system of the present embodiment, a case will be described in which a change in network configuration occurs due to an event server failure. The event server failure described below includes the event server leaving the event sharing system.

  As shown in FIG. 9, it is assumed that a failure has occurred in the host A101, which is an event server, in a system sharing events with each other. FIG. 9 is an overall configuration diagram when a failure occurs in the event server in the event sharing system shown in FIG.

  In this case, other hosts in the event sharing system cannot communicate with the host A 101 that is the event server. Hereinafter, the operation of this embodiment will be described by taking the operation of the host E105 as an example. Further, the description will be made with reference to the flowcharts shown in FIGS. 6 and 7 as appropriate. The operations of hosts other than the host E105 are the same as described below.

  First, the host E105 transmits an event to the host A101, which is an event server (S601).

  Since there is no response from the host A 101 because a failure has occurred in the host A 101 (S602, No), the host E105 deletes the host A101 from the host list shown in FIG. 4 (S603, S701).

  Next, the host E105 sets the host B, which is the host next to the host A101, from the host list shown in FIG. 4 as the event server in the server information (S702).

  Then, an attempt is made to send an event to the host B102 (S601). Since the host E105 has received a response from the host B102, the host B102 is set as the event server.

  Subsequently, the host E105 treats the host B102 as an event server (S602, Yes).

  As described above, in this embodiment, even when a failure occurs in the host A101 which is an event server, the same effect as that obtained when the network is divided is obtained. An event server can be determined, and event sharing can be realized.

(Second Embodiment of Event Sharing System)
Next, a second embodiment of the event sharing system according to the present invention will be described with reference to the drawings. The overall configuration of this embodiment is the same as the overall configuration shown in FIG.

  The function of the host of this embodiment will be described with reference to FIG. FIG. 10 is a block diagram showing the functions of the host in the second embodiment of the event sharing system according to the present invention.

  As shown in FIG. 10, the function of the host according to the present embodiment is a function in which the server information 203 is deleted from the function of the host shown in FIG.

In addition, among the functions shown in FIG. 10, the difference from the first embodiment described above is that
This is the function of the host list 1004 and the function of the server information update unit 1009, and other functions are the same.

  Similarly to the functions and operations of the host shown in FIG. 2 described above, the functions of the host shown in FIG. 10 and the operations described below are performed by a CPU (not shown) provided in the host as a single unit. Processing is performed by cooperating with each component or with a program stored in an auxiliary storage unit such as a main storage unit, a CD-ROM, or a hard disk. Further, this program may be downloaded to each host via the network 107.

  Next, information stored in the host list 1004 shown in FIG. 10 will be described with reference to FIG. FIG. 11 is a conceptual diagram of information stored in the host list shown in FIG. 10. FIG. 11A is a host list when the event server is host A, and FIG. Is a host list when the event server is the host D.

  The host lists shown in FIGS. 11A and 11B are given priorities in the order of host A, host B,..., That is, from the top of FIG.

  Also, the host list shown in FIGS. 11A and 11B includes a check 1101 indicating which host is the event server among the hosts shown in the host list.

  This check 1101 is updated by the server information update unit 1009 shown in FIG. 10 in the event server update process.

  Since the operation before the change in the network form in the present embodiment is the same as that described with reference to FIG.

(When a change occurs in the network configuration)
Next, a case where a change occurs in the network form in the event sharing system of this embodiment will be described. First, as an example of a change in the network form, a case where network division occurs will be described. Here, the division of the network means that communication cannot be established with respect to the network of the other party.

  As such network division, for example, a case where a failure occurs in the network 107 can be considered.

  Hereinafter, the operation of the present embodiment when a change occurs in the network configuration will be described with reference to FIGS. 5, 6, 10, 11, and 12. 5 and 6 are drawings used in the first embodiment of the event sharing system described above, but can also be used to describe the present embodiment. FIG. 12 is a flowchart of the operation of the second embodiment of the event sharing system according to the present invention.

  First, before the fragmentation as shown in FIG. 5 occurs, the host A101, host B102, host C103, host D104, host E105, and host F106 are connected to the network 107 and can communicate with each other. Suppose that

  In addition, the host A 101 plays the role of an event server. Further, all the hosts have host lists arranged in the order of “Host A, Host B, Host C, Host D, Host E, and Host F”. This host list may be the host list shown in FIG. 11A in the following description.

  Then, as shown in FIG. 5, a failure occurred in the network 107, and the network 107 was divided into a group of “host A, host B, host C” and a group of “host D, host E, host F”. .

  Based on this premise, an example of event server selection when viewed from the host E105 and an example of server selection when viewed from the host C103 are shown below.

(Example of event server selection seen from host E)
First, the host E105 transmits an event to the host A101, which is an event server (S601).

  Since the network 107 is divided, there is no response from the host A101 to the host E105 (S602, No). Therefore, the host E105 deletes the host A101 from the host list shown in FIG. 11 (S603, S1201).

  Next, the host E105 uses the host B, which is the host next to the host A101, from the host list shown in FIG. 11A as an event server, and updates the host list check shown in FIG. (S1202).

  Next, the host E105 tries to transmit an event to the host B102 newly set as the event server (S601).

  Similarly, the host E105 deletes the host B102 from the list and transmits an event to the host C103 because there is no response from the host B because the network 107 is divided.

  Further, since the network 107 is disconnected and there is no response from the host C103, the host E105 deletes the host C103 from the list and transmits an event to the host D104.

  Then, since there is a response from the host D104, the host E105 sets the host D104 as an event server (S602, Yes). At this time, in the host list, a check 1101 is entered into the host D as shown in FIG.

Subsequently, the host E105 handles the host D104 as an event server.
(Example of event server selection seen from host C)
The host C103 transmits an event to the host A101, which is an event server (S601).

  Since there is a response from the event server A101, the host E105 treats the host A101 as an event server thereafter (S602, Yes).

(Event server operation)
Next, the processing of the event server after the change in the network form is the same as that described with reference to FIG. 8 in the first embodiment, and will be omitted.

  As described above, in this embodiment, the same effect as that of the first embodiment described above can be obtained, and even if the network is divided due to a network failure and the network form is changed, the event sharing system Since each host in can automatically select an event server based on the host list stored in each host and distribute events, it is possible to share events without sending network configuration information regularly. A network that can flexibly cope with changes in the network form can be constructed.

  Also in this embodiment, each host does not need to periodically communicate with the event server, so communication traffic is reduced, the load on the event server is reduced, and the event server constantly updates information through communication with the event server. Therefore, even when the event server goes down, the server can be switched immediately, and even when the network is divided into a plurality of events, a plurality of event servers can be provided.

(If the network configuration is changed due to an event server failure)
Next, in the event sharing system of the present embodiment, a case will be described in which a change in network configuration occurs due to an event server failure. The event server failure described below includes the event server leaving the event sharing system.

  As shown in FIG. 9, it is assumed that a failure has occurred in the host A101, which is an event server, in a system sharing events with each other. FIG. 9 is a diagram for explaining the first embodiment of the event sharing system according to the present invention, which can also be used for explanation of this embodiment.

  In this case, other hosts in the event sharing system cannot communicate with the host A 101 that is the event server. Hereinafter, the operation of this embodiment will be described by taking the operation of the host E105 as an example. Further, description will be made with reference to the flowcharts shown in FIGS. 6 and 12 as appropriate. The operations of hosts other than the host E105 are the same as described below.

  First, the host E105 transmits an event to the host A101, which is an event server (S601).

  Since there is no response from the host A101 because a failure has occurred in the host A101 (S602, No), the host E105 deletes the host A101 from the host list shown in FIG. 11A (S603). S1201).

  Next, the host E105 performs host list update processing using the host B, which is the host next to the host A101, from the host list shown in FIG. 11A as an event server (S1202).

  Then, the host 105 attempts to send an event to the host B 102 (S601). Since the host E105 has received a response from the host B102, the host B102 is set as the event server.

  Subsequently, the host E105 treats the host B102 as an event server (S602, Yes).

  As described above, even when a failure occurs in the host A101 that is an event server, the same effects as those obtained when the network is divided are obtained, and each host automatically determines the event server. Event sharing.

1 is an overall configuration diagram of a first embodiment of an event sharing system according to the present invention. It is a block diagram which shows the function of the host shown by FIG. It is a conceptual diagram of the information stored in the server information shown by FIG. FIG. 3 is a conceptual diagram of information stored in a host list shown in FIG. 2. FIG. 2 is an overall configuration diagram in the event sharing system shown in FIG. 1 when a division occurs in a network. It is a flowchart of operation | movement of the event sharing system shown by FIG. It is a flowchart of operation | movement of the event sharing system shown by FIG. It is a flowchart of operation | movement of the event sharing system shown by FIG. FIG. 2 is an overall configuration diagram when a failure occurs in an event server in the event sharing system shown in FIG. 1. It is a block diagram which shows the function of the host in 2nd Embodiment of the event sharing system which concerns on this invention. FIG. 11 is a conceptual diagram of information stored in a host list shown in FIG. 10. It is a flowchart of operation | movement of 2nd Embodiment of the event sharing system which concerns on this invention.

Explanation of symbols

101 Host A
102 Host B
103 Host C
104 Host D
105 Host E
106 Host F
DESCRIPTION OF SYMBOLS 107 Network 201 Server part 202 Client part 203 Server information 204 Host list 205 Event reception part 206 Event transmission part 207 Host list update part 208 Event transmission part 209 Server information update part 1004 Host list 1009 Server information update part

Claims (12)

An event sharing system in which multiple hosts are connected by a network,
The host is
Server information storage means for storing information about the event server;
Host list storage means for storing a host list in which a plurality of hosts are ranked;
Event transmitting means for transmitting an event that has occurred to the event server indicated by the information stored in the server information storing means;
When the transmission of the event to the event server by the event transmission unit is not successful, the host ranked next to the event server in the host list is stored in the server information storage unit as a new event server And server information updating means for updating the information being provided,
The event transmission unit transmits an event for which the transmission is not successful to the new event server. An event sharing system in which multiple hosts are connected by a network,
The host is
A host list storage means for storing a host list in which a plurality of hosts are ranked and one of them is an event server;
Event transmitting means for transmitting an event that has occurred to an event server indicated in the host list;
When the event transmission unit does not successfully transmit the event to the event server, the host list is updated with the host ranked next to the event server in the host list as a new event server. Server information updating means for
The event transmission unit transmits an event for which the transmission is not successful to the new event server. The host is
An event receiving means for receiving an event transmitted from another host;
Receiving event transmitting means for transmitting the received event to each host based on the host list;
3. The event sharing system according to claim 1, further comprising: a host list update unit that deletes from the host list a host that has not been successfully transmitted by the reception event transmission unit. The host in an event sharing system in which a plurality of hosts are connected by a network,
Server information storage means for storing information about the event server;
Host list storage means for storing a host list in which a plurality of hosts are ranked;
Event transmitting means for transmitting an event that has occurred to the event server indicated by the information stored in the server information storing means;
When the transmission of the event to the event server by the event transmission unit is not successful, the host ranked next to the event server in the host list is stored in the server information storage unit as a new event server And server information updating means for updating the information being provided,
The host, wherein the event transmission means transmits an event for which the transmission is not successful to the new event server. The host in an event sharing system in which a plurality of hosts are connected by a network,
A host list storage means for storing a host list in which a plurality of hosts are ranked and one of them is an event server;
Event transmitting means for transmitting an event that has occurred to an event server indicated in the host list;
When the event transmission unit does not successfully transmit the event to the event server, the host list is updated with the host ranked next to the event server in the host list as a new event server. Server information updating means for
The host, wherein the event transmission means transmits an event for which the transmission is not successful to the new event server. An event receiving means for receiving an event transmitted from another host;
Receiving event transmitting means for transmitting the received event to each host based on the host list;
6. The host according to claim 4, further comprising: a host list update unit that deletes from the host list a host that has not been successfully transmitted by the reception event transmission unit. An event sharing method applied to an event sharing system in which a plurality of hosts are connected by a network,
The host
A server information storage step of storing information about the event server in the server information storage means;
A host list storing step of storing a host list in which a plurality of hosts are ranked in the host list storing means;
An event transmission step of transmitting an event that has occurred to the event server indicated by the information stored in the server information storage means;
When the transmission of the event to the event server in the event transmission step is not successful, the host ranked next to the event server in the host list is stored in the server information storage unit as a new event server. A server information update process for updating the information being processed;
An event sharing method, comprising: a transmission step of transmitting an event for which the transmission was not successful to the new event server. An event sharing method applied to an event sharing system in which a plurality of hosts are connected by a network,
The host
A host list storage step in which a plurality of hosts are ranked, and a host list having one of the hosts as an event server is stored in the host list storage means;
An event transmission step of transmitting an event that has occurred to the event server shown in the host list;
When the transmission of the event to the event server in the event transmission step is not successful, the host list is updated with a host ranked next to the event server in the host list as a new event server. Server information update process to be performed on
An event sharing method, comprising: a transmission step of transmitting an event for which the transmission was not successful to the new event server. The host
An event receiving process for receiving an event transmitted from another host;
A reception event transmission step of transmitting the received event to each host based on the host list;
9. The event sharing method according to claim 7, further comprising: a host list updating step of deleting from the host list hosts for which event transmission by the reception event transmission step has not been successful. An event sharing program applied to the host in an event sharing system in which a plurality of hosts are connected by a network,
The host,
Server information storage means for storing information about the event server,
Host list storage means for storing a host list in which a plurality of hosts are ranked,
Event transmission means for transmitting an event that has occurred to the event server indicated by the information stored in the server information storage means;
When the transmission of the event to the event server by the event transmission unit is not successful, the host ranked next to the event server in the host list is stored in the server information storage unit as a new event server Server information updating means for updating the stored information, and
An event sharing program that functions as transmission means for transmitting an event for which the transmission was not successful to the new event server. An event sharing program applied to the host in an event sharing system in which a plurality of hosts are connected by a network,
The host,
A host list storage means for storing a host list in which a plurality of hosts are ranked and one of them is an event server;
Event transmitting means for transmitting an event that has occurred to the event server indicated in the host list;
When the event transmission unit does not successfully transmit the event to the event server, the host list is updated with the host ranked next to the event server in the host list as a new event server. Server information updating means for performing, and
An event sharing program that functions as transmission means for transmitting an event for which the transmission was not successful to the new event server. The host,
Event receiving means for receiving events sent from other hosts,
A reception event transmitting means for transmitting the received event to each host based on the host list; and
12. The event sharing program according to claim 10, wherein the event sharing program functions as a host list update unit that deletes a host for which event transmission by the reception event transmission unit has not been successful from the host list.

Images