TWI397296B - Server system and method for user registeration - Google Patents

Description

Server system and user registration method

The present invention relates to a server system and a user registration method, and more particularly to a server system for a multi-client and a user registration method.

In the age of information, web applications and services are increasingly important to modern people. Whether it is industry or personal information processing, relying on the Internet for various matters has become increasingly popular, network applications and services are also advancing towards diversified development, such as e-commerce (E-Commerce), Internet telephony (VoIP), Video Conference, Multi-Media Resource exchange, corporate electronic data exchange, etc. At the same time, there are related communication protocols (Communications Protocol) are being developed to meet the trend. For example, the Session Initiation Protocol (SIP) under the Application Layer is a network protocol that uses a variety of multimedia information types such as video, voice, VoIP, instant messaging, online games, and so on.

In response to the multi-file data transmission and heavy load on these Internet networks, the reliability and availability of network services are also improved by network technology developers, hardware and software equipment providers and network providers. The goal of continuous improvement and excellence is expected to achieve Carrier-Grade's 99.999% High Availability transmission standard.

In the above SIP network applied to Internet telephony and multimedia file transmission, the user's registration information is often stored in an independent database. When the database system is abnormal or loses connection, it will cause The Single Point of Failure Problem (SPOF) causes server registration and other network functions to stop, affecting the service quality and high availability expectations of the network server.

The present invention provides a server system and a user registration method that can avoid single point failure caused by a single database exception to provide a highly available network service.

The present invention provides a server system suitable for a plurality of client devices, including a plurality of proxy servers (Proxy Server) for providing proxy services and registration services. And each has a memory to store a plurality of registration information generated by the client device by using the registration service. At the same time, it also includes a plurality of backup proxy servers respectively having memories for respectively backing up the registration information for use in the backup proxy server when one of the proxy servers is unable to provide the proxy service or the registration service. One is to replace.

In an embodiment of the present invention, the server system further includes a plurality of service access points (SAPs) for allowing each client device to connect to the agent through one of the service access points. One of the servers.

In an embodiment of the invention, the server system has a one-to-one correspondence between the service access point and the proxy server.

In an embodiment of the present invention, the server system, when one of the proxy servers fails to provide the proxy service or the registration service, associates one of the backup servers with the proxy that cannot provide the proxy service or the registration service. The service access point corresponding to the server.

In an embodiment of the present invention, the service access point of the server system corresponds to a network domain, and the client device belongs to one of the network domains corresponding to the service access points.

In an embodiment of the present invention, the server system, the proxy server and the backup proxy server periodically transmit control messages to each other to monitor each other's control messages to determine whether the proxy server provides the proxy normally. Service or registration service.

In an embodiment of the present invention, in the server system, when the client device separately sends the registration information to the proxy server, the proxy server synchronously updates the registration information received by each to the memory of each other, and backs up To the memory of the backup proxy server.

In an embodiment of the present invention, the server system has a proxy server that provides proxy services and registration services according to a Session Initialization Protocol (SIP).

From another point of view, the present invention further provides a user registration method, which is applicable to multiple client devices, including providing multiple proxy servers and multiple backup proxy servers, wherein the proxy server and the backup proxy server Each has a memory and provides a proxy service and a registration service by a proxy server.

When receiving a plurality of registration information generated by the client device by the registration service, respectively storing the registration information into the memory of the proxy server, and backing up the registration information to the backup proxy server, and determining whether the proxy server is The registration service is normally provided. When one of the proxy servers is unable to provide registration services, one of the backup proxy servers is substituted.

In an embodiment of the present invention, the user registration method, wherein each client device is connected to one of the proxy servers through one of the plurality of service access point devices, and the service access point and the proxy server For one-to-one correspondence. And, the step of replacing one of the proxy servers by one of the backup proxy servers includes: matching one of the backup servers to a service access point corresponding to the proxy server that cannot provide the registration service.

In an embodiment of the present invention, the user registration method described above, the step of determining whether the proxy server normally provides the registration service includes, firstly, periodically transmitting a control message from the proxy server and the backup proxy server to each other. After that, the proxy server and the backup proxy server listen to each other's control messages.

In an embodiment of the present invention, in the user registration method, when the client device separately sends the registration information to the proxy server, the proxy server synchronously updates the registration information received by the proxy server into each other's memory, and Back up to the memory of the backup proxy server.

In an embodiment of the present invention, in the above user registration method, the proxy server provides the proxy service and the registration service according to the conference initialization protocol.

Based on the above, the server system and the user registration method of the present invention are used to synchronously store the registration information of the client device by using the memory owned by the proxy server and the backup proxy server. Therefore, the problem of single point of failure of the database can be avoided. In addition, when one of the proxy servers fails, it can be taken over immediately by the backup proxy server. Therefore, the high availability of the server system can be maintained.

The above described features and advantages of the present invention will be more apparent from the following description.

FIG. 1 is a schematic diagram of a server system applied to a network environment according to an embodiment of the present invention. Referring to FIG. 1, the network environment 10 includes a server system 100 and a plurality of client devices C1, C2, C3, C4, C5, and C6. The server system 100 includes a plurality of proxy servers 112, 114, 116 and a plurality of backup proxy servers. Although, in this embodiment, the number of proxy servers 112-116 is three, and the number of proxy servers 122, 124 is two, in another embodiment not shown, the proxy server and the standby The number of proxy servers can also be single or increased or decreased according to demand.

The proxy servers 112-116 are configured to provide proxy services and registration services, and respectively have a memory (not shown) for storing a plurality of registration information generated by the client devices C1 C C6 by the registration service. For example, the proxy servers 112-116 can provide proxy services and registration services through an open source OpenScript software, respectively. In this embodiment, the proxy servers 112-116 can provide proxy services and registration services in accordance with a conference initiation protocol.

In addition, the backup proxy servers 122 and 124 also have a memory to back up the registration information of the client devices C1 C C6, respectively. When it is judged that one of the proxy servers 112-116 is unable to provide the proxy service or the registration service, one of the proxy servers 122, 124 can be replaced instead to maintain the availability of the server system.

For example, when the client device C4 of Domain A transmits registration information to the proxy server 112, the registration information will be stored in the memory of the proxy server 112. Moreover, the proxy server 112 synchronously backs up the stored registration information to the memory of the proxy servers 114-116 and the backup proxy servers 122-124. Therefore, each of the data stored in the proxy servers 114-116 can be updated synchronously to the backup proxy servers 122-124.

The above is related to how the registration information is stored in the memory of the proxy servers 112-116 and the synchronous backup to the backup proxy servers 122-124; and how the server system 100 determines that the proxy servers 114-116 in use have Whichever does not provide the service normally, and the alternative process of the backup proxy server 122, 124 will be described in detail in a later user registration method.

In this embodiment, the proxy servers 112-116 and the backup proxy servers 122 and 124 are located in the same domain D (hereinafter referred to as Domain D), for example, with the client devices C1 to C3. In addition, the client devices C1 to C3 can be connected to the proxy servers 112-116 and the backup proxy servers 122 and 124 through a conference initiation protocol network N (hereinafter referred to as SIP network N). In addition, the client devices C4 to C6 may be located in different domains A, B, and C (hereinafter referred to as Domain A, B, and C) different from the domain D.

In addition, the server system 100 may further include a plurality of service access points 132, 134, 136, and the client devices C4 C C6 may be connected to the proxy servers 112-116 or backup through the service access points 132-136, respectively. Proxy servers 122, 124. Service access points 132-136 may be in one-to-one correspondence with proxy servers 112-116. For example, the service access points 132-136 can each be a gateway to allow the Domain A~C packet to enter the Domain D. In this embodiment, the service access points 132-136 can be integrated into the proxy servers 112-116. In detail, the proxy servers 112-116 can respectively set a virtual IP address through the OpenSER Dispatcher module. In this way, the client devices C4~C6 located in different domains such as Domain A~C can be connected to the proxy servers 112-116 by these virtual network URLs.

In addition, in another embodiment not shown, the service access points 132-136 can also be integrated into a single dispatch server. When the dispatching server receives the packet, it can determine which source of the packet is the domain A~C and forward it to the corresponding one of the proxy servers 112-116.

In this embodiment, when the destination address of the packet sent by the client device C4 in the domain A is the virtual network address of the proxy server 112, the packet is transmitted to the service access point 132 via the service access point 132. Proxy server 112. That is to say, Domain A~C will correspond to individual service access points 132-136 to provide registration services and proxy services from individual Domain A~C by different proxy servers 112-116, respectively.

For example, the proxy server 112 provides a registration service and a proxy service to the client device C4 of the domain A via the service access point 132; the client device of the domain B is served by the proxy server 114 via the service access point 134. C5 provides a registration service and a proxy service; the proxy server 116 provides a registration service and a proxy service to the client device C6 of the Domain C via the service access point 136. In addition, the client devices C1 to C3 also located in the Domain D can be served by any of the proxy servers 112-116. When the client devices C1 to C3 of the domain D register one of the proxy servers 112-116, the registration information can be synchronously stored to other stations. Of course, all the proxy servers 112~116 can also be registered by the client devices C1~C3 at the same time to ensure the registration information is synchronized.

It is worth mentioning that the server system 100 can store the registration data from all client devices in the memory of the respective proxy servers 112-116 and back up the backup proxy servers 122-124. Compared with the prior art, all the registration data are stored in the database of the same database server. The server system 100 of the embodiment can avoid the single point failure problem caused by the shutdown of the database server (Single). Point of Failure Problem (SPOF), while saving the need to have additional database devices. In addition, since the registration information is directly stored on the proxy servers 112-116, when the proxy servers 112-116 communicate with the client devices C1~C6, the client devices C1~C6 can be directly read from the internal memory. The ability to transmit the required information, such as a web address, without accessing the database server, can also improve overall operational performance.

It can be seen that the server system 100 of the present embodiment not only integrates the proxy service and the registration service, but also provides an uninterrupted network service without a single point failure problem.

2 is a flow chart of a user registration method according to an embodiment of the present invention. Next, FIG. 2 will be explained to explain how to use the server system 100 to perform a detailed process of the user registration method. Please refer to Figure 1 and Figure 2 at the same time.

First, step S100 is performed to provide a server system 100 including a plurality of proxy servers 112-116 and a plurality of backup proxy servers 122-124 and the like as shown in FIG. 1. It must be emphasized again that the proxy servers 112-116 The backup proxy servers 122-124 can store the registration information of the plurality of client devices C1~C6 by using the memory, which is different from the general server system in storing the registration information in a single database server.

Next, proceeding to step S110, the proxy server and the registration service are provided by the proxy servers 112-116. As mentioned in the introduction of the server system 100, the function of the proxy service and the registration service of the proxy servers 112-116 can be constructed through the OpenSER software. In addition, each of the proxy servers 112-116 can also generate corresponding service access points 132-136 by using the OpenSER dispatcher module to provide the virtual network address of each of the proxy servers 112-116. Used separately for different domains (such as Domain A~C). Therefore, the proxy servers 112-116 can correspond to different network domains (such as the domain Domain A~C) by using the service access points 132-136, and can individually respond to the client devices C4 in different domains. C6's request and contact.

Thereafter, proceeding to step S120, the proxy servers 112-116 may begin accepting registration requests from the client devices C1~C6 in the respective domain and permitting responses.

Then, in step S130, if the request from the client devices 142-146 in the above step is a registration request, then a certain proxy server that receives the registration request will register the relevant user registration information of the requesting client device. It is stored in its own memory so that it can be used later when a call is established. For example, a memory disk (Ramdisk) can be set to the proxy servers 112-116, respectively, and a data inventory can be placed in the set memory disk. After that, the proxy servers 112-116 can store the registration information by using the database in the memory disk.

Finally, in step S140, the registration information of the backup step S130 is synchronized to the memory of the backup proxy servers 122-124. At this time, the method of backing up the registration data can be implemented by the CKPT Service provided by the Open Application Interface Specification (OpenAIS). The method may be implemented by the OpenAIS CKPT Service, and the proxy servers 112-116 and the backup proxy servers 122-124 both generate a checkpoint.

When the proxy server 112~116 has stored the new registration information, the new message packet will also be written into the detection point of the proxy server. Moreover, the detection points of the backup proxy servers 122-124 are synchronously notified and the registration information on the backup proxy server detection point is updated at the same time. After that, the backup proxy servers 122~124 update the new registration information on the detection point to their own memory. In this way, the backup proxy servers 122-124 can continuously update the registration information in the memory with the proxy servers 112-116, which can be used as a backup requirement.

After the client devices C1 to C6 have completed the registration service, if the client device C6 issues an invitation (Invite) request to the client device C1, the proxy server 116 receives the invitation request sent by the client device C6. At this time, the proxy server 116 queries the registration information stored in the memory according to the user name of the client device C1 to know the network address where the client device C1 is actually located. The proxy server 116 then forwards the invitation request to the network address just queried. In this way, the client device C1 can receive the invitation request, and after the client device C1 allows, the conference of the client device C6 and the client device C1 can be started.

3 is a schematic diagram of the proxy server and the backup proxy server transmitting control signals of FIG. 1, and FIG. 4 is a flowchart for backing up the proxy server and the backup proxy server of FIG. Next, a method and a process for how to perform the health detection of the proxy servers 112-116 and the backup proxy servers 122-124 will be described with reference to FIGS. 3 and 4.

First, step S200 is performed to detect the operations of the proxy servers 112-116. In detail, the proxy servers 112-116 and the backup proxy servers 122-124 periodically transmit control messages 1~5 to each other. In this embodiment, the proxy servers 112-116 and the backup proxy servers 122-124 can send control messages through the Application Management Framework (AMF) service provided by the open source program OpenAIS. ~5 to each other.

Thereafter, in step S210, the proxy servers 112-116 and the backup proxy servers 122-124 monitor whether the states of each other operate normally according to the received control messages 1~5. As with the heartbeat, when the proxy servers 112-116 and the backup proxy servers 122-124 receive the control messages 1~5 that they respond to, it can be determined that the proxy servers 112-116 are normal. Operation, then can return to step S210 to continue to detect the operation of the proxy server.

If there is a proxy server among the proxy servers 112-116, for example, if the proxy server 114 fails to send the control message as scheduled, it indicates that the proxy server 114 has an abnormal condition. That is, the proxy server 114 may have been unable to provide registration services or proxy services as usual. At this point, step S220 can be performed to start an erroneous reply.

Thus, in step S220, one of the backup proxy servers 122-124, such as the backup proxy server 122, is selected. After the selection, the backup proxy server 122 is further associated with the service access point 134 corresponding to the proxy server 114. As described above, the memory of the backup proxy server 122 has registration information in the memory of the synchronous update proxy servers 112-116. Therefore, the backup proxy server 122 can immediately take over the backup work. The method of selecting the backup proxy server 122 can be accomplished according to different ranking algorithms. In addition, the process of selecting the backup proxy server 122 can also be assigned through OpenAIS's AMF service. That is, OpenAIS will notify the service access point 134 corresponding to the selected backup proxy server 122 and its virtual network address.

Next, step 230 will be performed, and the backup proxy server 122 takes over the network service of the failed proxy server 114. The method of taking over may be that the backup proxy server 122 that informs the service access point 134 of information by the OpenAIS sends out an ARP (Address Resolution Protocol) packet containing the MAC Address to update the Domain D (as shown in the figure). 1) Connect the ARP table on the network device node (not shown) of the Domain B (as shown in Figure 1) to update the physical address of the proxy server 114 corresponding to the original service access point 134 to the backup The physical address of the proxy server 122. Thereafter, the registration request or proxy request from the client device C5 of Domain B is forwarded to the backup proxy server 122, which takes over the subsequent work. Moreover, the action of this take-up can be completed in a very short time.

Finally, step 240 may also be performed to log the exception of the proxy server 114 and the backup proxy server 122, and may notify the relevant system administrator to further the faulty proxy server 114. Check or repair. After the failure of the proxy server 114, it can be transferred to the backup server, but the backup proxy server 122 can also be used to provide registration and proxy services.

In summary, the server system and user registration method of the present invention integrates proxy service and registration service. As a result, the number of servers required for configuration can be saved, which in turn reduces costs. In addition, the server system and the user registration method of the present invention synchronously store the registration information of the client device by using the memory owned by the proxy server and the backup proxy server. Therefore, the problem of single point of failure of the database can be avoided. In addition, when one of the proxy servers fails, it can be taken over immediately by the backup proxy server. Therefore, the high availability of the server system can be maintained.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

10. . . Network environment

100. . . Server system

112, 114, 116. . . Proxy server

122, 124. . . Backup proxy server

132, 132, 136. . . Service access point

C1~C6. . . Client device

N. . . SIP network

S100~S140, S200~S240. . . step

FIG. 1 is a schematic diagram of a server system applied to a network environment according to an embodiment of the present invention.

2 is a flow chart of a user registration method according to an embodiment of the present invention.

3 is a schematic diagram of the proxy server and the backup proxy server of FIG. 1 transmitting control signals.

4 is a flow chart of the backup of the proxy server and the backup proxy server of FIG.

10. . . Network environment

100. . . Server system

112, 114, 116. . . Proxy server

122, 124. . . Backup proxy server

132, 132, 136. . . Service access point

C1~C6. . . Client device

N. . . SIP network

Claims (13)

A server system, applicable to a plurality of client devices, comprising: a plurality of proxy servers for providing a proxy service and a registration service, and each having a memory for respectively storing the client devices by the a plurality of registration information generated by the registration service; and a plurality of backup proxy servers each having a memory for respectively backing up the registration information for determining that one of the proxy servers is unable to provide the proxy service or When registering the service, replace it with one of the backup proxy servers. The server system of claim 1, further comprising: a plurality of service access points, wherein each of the client devices is connected to the proxy servers through one of the service access points one of them. The server system of claim 1, wherein the service access points are in one-to-one correspondence with the proxy servers. The server system of claim 1, wherein when one of the proxy servers is unable to provide the proxy service or the registration service, one of the backup servers is corresponding to the failure to provide the proxy server. The service access point corresponding to the proxy service or the proxy server of the registration service. The server system of claim 1, wherein the service access points respectively correspond to a domain, and the client devices respectively belong to one of the domains corresponding to the service access points. The server system of claim 1, wherein the proxy server and the backup proxy server periodically transmit a control message to each other to monitor each of the control messages to determine the Whether the proxy server provides the proxy service or the registration service normally. The server system of claim 1, wherein when the client devices respectively send the registration information to the proxy servers, the proxy servers synchronously update the registration information received by each of the proxy servers to In each other's memory, and back up to the memory of the backup proxy servers. The server system of claim 1, wherein the proxy servers provide the proxy service and the registration service according to a conference initiation protocol. A user registration method, applicable to multiple client devices, includes: providing a plurality of proxy servers and a plurality of backup proxy servers, wherein the proxy servers and the backup proxy servers respectively have a memory Providing a proxy service and a registration service by the proxy servers; and storing the registration information to the proxy information when receiving the plurality of registration information generated by the client devices by the registration service In the memory of the server, and backing up the registration information to the backup proxy servers; and determining whether the proxy servers provide the registration service normally; when one of the proxy servers fails to provide the registration When serving, replace it with one of these backup proxy servers. The user registration method of claim 9, wherein each of the client devices is connected to one of the proxy servers through one of a plurality of service access points, and the service access points are The one-to-one correspondence with the proxy servers, and the step of replacing one of the proxy servers by one of the backup proxy servers includes: corresponding one of the backup servers to The service access point corresponding to the proxy server of the registration service cannot be provided. The user registration method of claim 9, wherein the step of determining whether the proxy server normally provides the registration service comprises: periodically transmitting from the proxy server and the backup proxy servers A control message is given to each other; and the proxy servers and the backup proxy servers listen to each of the control messages. The user registration method of claim 9, wherein when the client devices respectively send the registration information to the proxy servers, the proxy servers synchronously update the registration information received by each of the proxy servers. Back to each other's memory and back up to the memory of the backup proxy servers. The user registration method of claim 9, wherein the proxy server provides the proxy service and the registration service according to a conference initialization agreement.