CN103491055B - A kind of method of the synchronizing information between multiple client, client and server - Google Patents

Abstract

A method for synchronizing information between multiple clients, a client and a server, the method comprising: each client sends a subscription request to the server when a user logs in, and establishes a session; the first client that has established a session with the server When it is detected that a record update occurs in the local list that needs to be synchronized with other clients that use the same account to log in, a modification request is sent to the server, which contains at least update operation instruction information, which is used to instruct other clients to perform corresponding updates according to this information Operation: After receiving the modification request, the server sends a change notification message to other clients that log in with the same account as the first client, which carries the above-mentioned update operation instruction information; The operation instruction information updates the local designation list. The present invention realizes data synchronization between multiple terminals in an incremental manner, saving precious network resources. And it has a wide range of applications.

Description

A method, client and server for synchronizing information among multiple clients

technical field

The invention relates to related technologies in the communication field, and in particular to a method for synchronizing information among multiple clients, a client and a server.

Background technique

In the existing synchronization technology, in the architecture based on client/server (Client/Server, referred to as C/S), the multi-client synchronization method generally adopts the synchronization method of the multi-terminal state, that is, in the state of a terminal When a change occurs, the server notifies other terminals associated with this terminal. Due to the relatively large amount of state data, when only one field of the state is modified, the entire data packet needs to be delivered through the server, which consumes a relatively large bandwidth and increases the burden on the network.

Contents of the invention

The problem to be solved by the present invention is to provide a method for synchronizing information among multiple clients, a client and a server, so as to overcome the defect that the existing synchronization method occupies more bandwidth.

In order to solve the above problems, the present invention provides a method for synchronizing information among multiple clients, including:

Each client sends a subscription request to the server when the user logs in, and establishes a session;

When the first client that has established a session with the server detects that a record update occurs in the local list that needs to be synchronized with other clients that use the same account to log in, it sends a modification request to the server, which at least carries an update operation instruction Information, used to instruct other clients to perform corresponding update operations according to this information;

After receiving the modification request, the server sends a change notification message to other clients logged in with the same account as the first client, which carries the above update operation instruction information;

The client that receives the change notification message updates the local specified list according to the update operation instruction information carried in it.

further,

When the update operation is to add a new record, the update operation instruction information includes: adding an identifier and a newly added record;

When the update operation is to delete a record, the update operation indication information includes a deletion identifier and a record before deletion.

further,

The modification request is in Extensible Markup Language Configuration Access Protocol (XCAP) format.

further,

The sending a change notification message to other clients logged in with the same account as the first client specifically includes:

The server sends the change notification message using the session established between the other client and the server when the user logs in.

further,

The change notification message is an initial session protocol notification (SIP NOTIFY) message in a format of a difference XCAP document (XCAP Diff Document).

Correspondingly, the present invention also provides a client, multiple clients using the same account to log in to the server need to synchronize the specified list, the client includes:

The request sending module is used to send a subscription request to the server when the user logs in, and establish a session with the server; it is also used to send a modification request to the server when a record update in the list of the client is detected , which at least carries update operation instruction information, which is used to instruct other clients to perform corresponding update operations according to this information;

The update module is configured to update the local designated list according to the update operation instruction information carried in the change notification message sent by the server.

further,

When the update operation is adding a new record, the update operation indication information sent by the request sending module includes: adding an identifier and a newly added record;

When the update operation is to delete a record, the update operation indication information sent by the request sending module includes a deletion identifier and a record before deletion.

further,

The modification request is in Extensible Markup Language Configuration Access Protocol (XCAP) format.

Correspondingly, the present invention also provides a server, which is applied in a client/server architecture system, including:

The receiving module is configured to receive the subscription request sent by the client, and establish a session with the client; it is also configured to receive the modification request sent by the client, wherein the modification request carries at least update operation instruction information, and is used to To instruct other clients to perform corresponding update operations according to this information;

The sending module is configured to send a change notification message to other clients logged in with the same account as the client after the receiving module receives the modification request, which carries the update operation instruction information.

further,

The sending module is used to send a change notification message to other clients logged in with the same account as the client, specifically including:

The sending module is configured to use the session established between the other client and the server when the user logs in to send the change notification message.

further,

The change notification message is an initial session protocol notification (SIP NOTIFY) message in a format of a difference XCAP document (XCAP Diff Document).

The present invention realizes data synchronization between multiple terminals in an incremental manner, and only needs to send the added and deleted data through the addition and deletion marks, the amount of data is small, and precious network resources are saved. Moreover, it can support the synchronization of various types of data through expansion, and has a wide range of applications.

Description of drawings

FIG. 1 is a flowchart of a method for synchronizing information among multiple clients in an embodiment of the present invention;

Fig. 2 is a flow chart of a method for synchronizing contact lists of multiple clients in application example 1 of the present invention;

Fig. 3 is the method flow chart that utilizes SUBSCRIBE and NOTIFY to carry out multi-client contact list synchronization in application example 2 of the present invention;

FIG. 4 is a schematic structural diagram of a client in an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a server in an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

In this embodiment, a method for synchronizing information among multiple clients is applied to a C/S architecture system, in which multiple clients logging in with the same account need to synchronize a specified list, such as As shown in Figure 1, the synchronization method includes:

Step 10, each client sends a subscription request to the server when the user logs in, and establishes a session;

Step 20. When the first client that has established a session with the above server detects that a record update occurs in the local specified list, it sends a modification request to the server, which at least carries update operation instruction information, and is used to instruct other clients to follow this rule. update the information accordingly;

Wherein, when the update operation is to add a record, the update operation instruction information includes: adding an identifier and the newly added record; when the update operation is to delete a record, the update operation instruction information includes a deletion identifier and a record before deletion;

In addition, the modification request may adopt the XCAP (XML Configuration Access Protocol, Extensible Markup Language Configuration Access Protocol) format;

Step 30: After receiving the modification request above, the server sends a change notification message to other clients logged in with the same account as the first client, which carries the above update operation instruction information; in specific implementation, the change notification message can be Use the session established between the client and the server when the user logs in to send, which can use the SIP (Session Initiation Protocol, initial session protocol) NOTIFY (notification) message in the XCAP DiffDocument (different XCAP document) format;

Step 40: After receiving the above-mentioned change notification message, other clients update the local designation list according to the update operation instruction information carried therein.

The present invention will be further described below with several application examples of the present invention.

Application example 1

In this application example, a method for synchronizing contact lists of multiple clients is provided, as shown in Figure 2, including the following steps:

Step 101, multiple clients associated with a user log in, and send a subscription request in XCAP Diff Document format to the server;

Step 102, after the user's client B1 detects that the contact list has been modified, it sends a modification request to the server; wherein, the modification request can be an XCAP message, which at least carries update operation instruction information;

Step 103, the server constructs a corresponding change notification message according to the update operation indication information in the received modification request, and the format of the message body is constructed according to the XCAP Diff Document format;

In step 104, the server searches the memory for all relevant client information of the currently online user, and sends a change notification message according to the SUBSCRIBE (subscription) message of the client.

When each client registers, the server saves the user's registration information through the user's Public User Identity (public user identity), and the registration information of multiple clients belonging to the same client is saved through a certain data structure. Each client will save the subscription ID in its own memory when it initiates a subscription request. The server finds information about all registered clients of the user according to the Public User Identity carried in the modification request, and sends a change notification message through the corresponding subscription ID.

Application example 2

In this application example, all clients B1, B2, and B3 of user B send notifications of changes to the subscription contact list to the server respectively. As shown in Figure 3, the method for multi-client information synchronization using SIP SUBSCRIBE and SIP NOTIFY includes:

Step 201, when the user modifies the contact list on the client B1, the client B1 sends a modification request with an XCAP message; among them, the operation of adding a record sends a PUT request, the operation of deleting a record sends a DELETE request, and the XCAP message of modifying the contact information The body contains the contact's nickname, etc.;

Step 202, the server S1 returns a 200 OK response to the client B1;

Step 203, the server S1 parses the modification request above, constructs a corresponding NOTIFY message according to the modification request, and the format of the message body is constructed according to the XCAP Diff Document;

Step 204, the client B2 is online and has subscribed to the notification of the change of the contact list, therefore, the server S1 sends the constructed notification of the change of the contact list to the client B2 in NOTIFY mode;

Step 205, the client B2 updates its contact list, and returns a 200 OK response to the server S1.

Step 204', the client B3 is online and has subscribed to the notification of the change of the contact list, therefore, the server S1 sends the constructed notification of the change of the contact list to the client B3 in NOTIFY mode.

Step 205', the client B3 updates its own contact list, and returns a 200 OK response to the server S1.

In addition, in this embodiment, a client needs to synchronize a specified list on multiple clients that use the same account to log in to the server. As shown in FIG. 4, the client includes:

The request sending module is used to send a subscription request to the server when the user logs in, and establish a session with the server; it is also used to send a modification request to the server when a record update in the list of the client is detected , which at least carries update operation instruction information, which is used to instruct other clients to perform corresponding update operations according to this information;

The update module is configured to update the local designated list according to the update operation instruction information carried in the change notification message sent by the server.

Preferably,

When the update operation is adding a new record, the update operation indication information sent by the request sending module includes: adding an identifier and a newly added record;

When the update operation is to delete a record, the update operation indication information sent by the request sending module includes a deletion identifier and a record before deletion.

Preferably,

The modification request is in Extensible Markup Language Configuration Access Protocol (XCAP) format.

Correspondingly, a server, which is applied to a client/server architecture system, as shown in Figure 5, includes:

The receiving module is configured to receive the subscription request sent by the client, and establish a session with the client; it is also configured to receive the modification request sent by the client, wherein the modification request carries at least update operation instruction information, and is used to To instruct other clients to perform corresponding update operations according to this information;

The sending module is configured to send a change notification message to other clients logged in with the same account as the client after the receiving module receives the modification request, which carries the update operation instruction information.

Preferably,

The sending module is used to send a change notification message to other clients logged in with the same account as the client, specifically including:

The sending module is configured to use the session established between the other client and the server when the user logs in to send the change notification message.

Preferably,

The change notification message is an initial session protocol notification (SIP NOTIFY) message in a format of a difference XCAP document (XCAP Diff Document).

Those skilled in the art can understand that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a magnetic disk or an optical disk, and the like. Optionally, all or part of the steps in the foregoing embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiments may be implemented in the form of hardware, or may be implemented in the form of software function modules. The present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. According to the content of the present invention, there can also be other various embodiments. Those skilled in the art can make various corresponding changes and deformations according to the present invention without departing from the spirit and essence of the present invention. Within the spirit and principles of the present invention, any modifications, equivalent replacements, improvements, etc., shall be included within the protection scope of the present invention.

Claims (9)

1. a kind of method of the synchronizing information between multiple client, including：

Each client sends to server when user logs in and subscribes to request, establishes session；

The first client of session has been established with the server local to log in using identical account with other detecting Client synchronization list in occurrence record update when, to the server send modification request, wherein at least carry update Operation instruction information is used to indicate other clients and carries out corresponding update operation according to this information；

The server is after receiving the modification request, to other visitors logged in using identical account with first client Family end sends Notification of Changes message, wherein carrying above-mentioned update operation instruction information；

Receive specified row of the client of the Notification of Changes message according to the update operation instruction information wherein carried to local Table is updated；Wherein, specified list specifically includes：Contacts list；

Wherein, the server is asked according to the subscription of client to issue Notification of Changes message；

It is described to send Notification of Changes message using other clients that identical account logs in first client, it is specific to wrap It includes：

Described in the session that the server is established when user logs between the server using other described clients is sent Notification of Changes message.

2. the method as described in claim 1, it is characterised in that：

When update operation is increases record newly, the update operation instruction information includes：Increase mark and newly-increased record；

When update operation is deletion record, the update operation instruction information includes the record before deleting mark and deleting.

3. method as claimed in claim 1 or 2, it is characterised in that：

The modification request uses extensible markup language configuration access protocol (XCAP) format.

4. the method as described in claim 1, it is characterised in that：

The Notification of Changes message is that the initial session protocol of XCAP documents (XCAP Diff Document) format of difference is logical Know (SIP NOTIFY) message.

5. a kind of client, need to synchronize specified list in multiple clients using identical account game server, the visitor Family end includes：

Request sending module, request is subscribed to for being sent to the server when user logs in, and meeting is established with the server Words；When being additionally operable to the occurrence record update in the list for detecting this client, modification request is sent to the server, Update operation instruction information is wherein at least carried, other clients is used to indicate and carries out corresponding update operation according to this information；

Update module, for after receiving the Notification of Changes message that server is sent, according to the update operation instruction wherein carried Information is updated local specified list；Wherein, specified list specifically includes：Contacts list；

Wherein, the server asks, to issue Notification of Changes message, to specifically include according to the subscription：The server uses The session that other described clients are established when user logs between the server sends the Notification of Changes message.

6. client as claimed in claim 5, it is characterised in that：

When update operation is increases record newly, the update operation instruction information that the request sending module is sent includes：Increase Mark and newly-increased record；

When update operation is deletion record, the update operation instruction information that the request sending module is sent includes deleting mark Record before knowing and deleting.

7. client as claimed in claim 5, it is characterised in that：

The modification request uses extensible markup language configuration access protocol (XCAP) format.

8. a kind of server is applied in user terminal/server framework system, including：

Receiving module, the subscription request sent for receiving client, session is established with the client；It is additionally operable to described in reception The modification request that client is sent is used to indicate other wherein at least carrying update operation instruction information in modification request Client carries out corresponding update operation according to this information；

Sending module, for after the receiving module receives the modification request, identical account to be used to the client Number other clients logged in send Notification of Changes message, wherein carrying the update operation instruction information；So that：Other visitors Family end is after receiving the Notification of Changes message that server is sent, according to the update operation instruction information wherein carried to local finger Determine list to be updated；Wherein, specified list specifically includes：Contacts list；

Wherein, the sending module is asked according to the subscription of client to issue Notification of Changes message；

The sending module, which is used to send Notification of Changes to other clients logged in using identical account with the client, to disappear Breath, specifically includes：

The sending module is used to send out using the session that other described clients are established when user logs between the server Send the Notification of Changes message.

9. server as claimed in claim 8, it is characterised in that：

The Notification of Changes message is that the initial session protocol of XCAP documents (XCAP Diff Document) format of difference is logical Know (SIP NOTIFY) message.