WO2024078208A1 - Procédé et appareil d'interrogation de nom de domaine sur la base d'un protocole ecs, support de stockage et dispositif - Google Patents

Procédé et appareil d'interrogation de nom de domaine sur la base d'un protocole ecs, support de stockage et dispositif Download PDF

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WO2024078208A1
WO2024078208A1 PCT/CN2023/117333 CN2023117333W WO2024078208A1 WO 2024078208 A1 WO2024078208 A1 WO 2024078208A1 CN 2023117333 W CN2023117333 W CN 2023117333W WO 2024078208 A1 WO2024078208 A1 WO 2024078208A1
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Prior art keywords
domain name
view
layer view
layer
server
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PCT/CN2023/117333
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English (en)
Chinese (zh)
Inventor
唐宏
陈戈
梁洁
庄一嵘
薛沛林
海锦霞
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中国电信股份有限公司
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Publication of WO2024078208A1 publication Critical patent/WO2024078208A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter

Definitions

  • the present disclosure relates to the technical field of computer networks, and in particular to a domain name query method and apparatus based on the ECS protocol, a storage medium and a device.
  • the DNS extension protocol ECS (Edns-Client-Subnet) allows the DNS recursive server to pass the user's IP address to the authorization server, allowing CDN to achieve more accurate scheduling.
  • ECS only defines the interface and messages between DNS and CDN, so the existing ECS implementation has the following problems:
  • the purpose of the present disclosure is to provide a domain name query method and apparatus, storage medium and device based on the ECS protocol, which balances accuracy and load by setting a two-level view on the DNS and improves the efficiency of ECS query.
  • a domain name query method based on the ECS protocol comprising: a local domain name server receiving a domain name query request from a client, the domain name query request including a source IP address, the local domain name server including a sub-layer view and a parent layer view, the parent layer view establishing a subordinate relationship with a plurality of the sub-layer views; the local domain name server matching an ACL according to the source IP address to determine the corresponding sub-layer view; the sub-layer view initiating a DNS record query request to the corresponding parent layer view, judging the DNS entries stored in the parent layer view; Whether there is a corresponding DNS record for the target; if so, the parent layer view returns the DNS record to the child layer view, and the child layer view returns the DNS record to the client; if not, the child layer view initiates a domain name query request based on the ECS protocol, and returns the query result to the client.
  • the step of initiating a domain name query request based on the ECS protocol by the sub-layer view includes: the sub-layer view initiates an ECS query request to the global scheduling server according to Subnet information, and the Subnet information includes a Loopback address; the global scheduling server queries the corresponding CDN (Content Delivery Network) view according to the Subnet information, and returns the query message to the sub-layer view; the sub-layer view returns the result to the client according to the query message.
  • CDN Content Delivery Network
  • the sub-layer view is divided according to broadband access points, and the sub-layer view is set with a loopback address.
  • the domain name query method further includes: the global scheduling server adjusts the corresponding CDN view according to the CDN node change, and initiates a synchronization request to the local domain name server.
  • the global scheduling server adjusts the corresponding CDN view according to the change of CDN nodes, and initiates a synchronization request to the local domain name server, including: the global scheduling server obtains information of the newly added CDN node; the global scheduling server queries the corresponding CDN view according to the information of the newly added CDN node; if the global scheduling server does not find the corresponding CDN view, the corresponding CDN view is added, and the loopback address corresponding to the newly added CDN view is added to the ACL; the global scheduling server triggers the local domain name server to synchronize the view.
  • the global scheduling server triggers the local domain name server to synchronize the view by starting a synchronization interface with the local domain name server.
  • the domain name query method also includes: the local domain name server performs a view synchronization operation according to the synchronization request initiated by the global scheduling server, which specifically includes the following steps: the local domain name server receives the synchronization request; the local domain name server determines whether there is a corresponding parent layer view, and if not found, creates a corresponding parent layer view; the local domain name server adjusts the subordinate relationship between the child layer view and the newly created parent layer view according to the ACL.
  • the parent layer view corresponds one-to-one to the CDN view.
  • a domain name query device based on the ECS protocol, including: a receiving module, configured to receive a domain name query request from a client as a local domain name server, the domain name query request including a source IP address, the local domain name server including a sub-layer view and a parent layer view, and the parent layer view establishing a subordinate relationship with a plurality of the sub-layer views; a matching module, configured to match an access control list (ACL) according to the source IP address to the local domain name server to determine the corresponding sub-layer view; a query module, configured to initiate a DNS record query request from the sub-layer view to the corresponding parent layer view to determine whether a DNS entry stored in the parent layer view has a corresponding DNS record; if so, the parent layer view returns a DNS record to the sub-layer view, and the sub-layer view returns the DNS record to the client; if not, the sub-layer view initiates a domain name query request based on the ECS protocol, and returns
  • ACL access control list
  • a first synchronization module configured for the global scheduling server to adjust the corresponding CDN view according to the CDN node change, and initiate a synchronization request to the local domain name server.
  • a second synchronization module configured for the local domain name server to perform a view synchronization operation according to a synchronization request initiated by the global scheduling server, specifically including the following steps: the local domain name server receives the synchronization request; the local domain name server determines whether there is a corresponding parent layer view, and if not found, creates a corresponding parent layer view; the local domain name server adjusts the subordinate relationship between the sub-layer view and the newly created parent layer view according to the ACL.
  • an electronic device including: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute the above-mentioned ECS query method by executing the executable instructions.
  • a computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the above-mentioned ECS query method is implemented.
  • a computer program product including a computer program, wherein when the computer program is executed by a processor, the computer program implements any one of the above-mentioned ECS query methods.
  • the ECS query method provided by the embodiment of the present disclosure sets two levels of views with a subordinate relationship in the local domain name server, divides the sub-layer views according to the source IP address to meet the scheduling accuracy, and sets the parent layer view to effectively control the load of the local domain name server by merging query and storage.
  • the CDN view division is based on the edge node, and synchronization is automatically performed by triggering the broadband interface, so that automatic synchronization of DNS and CDN can be achieved, reducing the complexity of configuration management.
  • FIG1 is a schematic diagram showing the structure of a computer system according to an embodiment of the present disclosure
  • FIG2 is a flowchart of a domain name query method according to an embodiment of the present disclosure
  • FIG3 is a flowchart of a method for initiating a domain name query from a sub-layer view according to an embodiment of the present disclosure
  • FIG4 is a flowchart showing another domain name query method in an embodiment of the present disclosure.
  • FIG5 shows a flow chart of a method for synchronizing a local domain name server view with a CDN view in an embodiment of the present disclosure
  • FIG6 shows a flowchart of another method for synchronizing a local domain name server view with a CDN view in an embodiment of the present disclosure
  • FIG7 shows a domain name query method and device according to an embodiment of the present disclosure
  • FIG8 shows another domain name query method and device according to an embodiment of the present disclosure
  • FIG. 9 shows a structural block diagram of an electronic device in an embodiment of the present disclosure.
  • the solution provided by this application sets up two levels of views with subordinate relationships in the local domain name server.
  • the child view is responsible for querying DNS records and initiating ECS queries from the parent view, while the parent view is responsible for storing DNS records and responding to query requests.
  • the parent view is responsible for storing DNS records and responding to query requests.
  • DNS is the abbreviation of Domain Name System, which is used to name computers and network services organized into a domain hierarchy.
  • DNS is the abbreviation of Domain Name System, which is used to name computers and network services organized into a domain hierarchy.
  • IP addresses On the Internet, there is a one-to-one correspondence between domain names and IP addresses.
  • domain names are easy for people to remember, machines can only recognize each other's IP addresses. The conversion between them is called domain name resolution, which needs to be completed by a dedicated domain name resolution server.
  • DNS is the server that performs domain name resolution.
  • ECS is a DNS extension protocol (Edns Client Subnet) proposed by Google and other companies. It allows the DNS recursive server to pass the user's IP address to the authorized server, allowing CDN to achieve more accurate scheduling.
  • CDN Content Delivery Network
  • CDN is an intelligent virtual network built on the existing network. It relies on edge servers deployed in various places. Through the load balancing, content distribution, scheduling and other functional modules of the central platform, users can obtain the required content nearby, reduce network congestion, and improve user access response speed and hit rate.
  • the edge server provides users with a channel to enter the network and the function of communicating with other server devices.
  • the edge server is a group of servers that perform a single function, such as firewall servers, cache servers, load balancing servers, DNS servers, etc.
  • GSLB Global Server Load Balance
  • GSLB Global Server Load Balance
  • proximity judgment is the main function of global load balancing.
  • Local load balancing is generally limited to a certain area, and its goal is to find the most suitable node to provide services within a specific area.
  • FIG1 is a schematic diagram of the structure of a computer system provided by an exemplary embodiment of the present application.
  • the system includes: Several terminals 120 and a server cluster 140 .
  • the terminal 120 may be a mobile terminal such as a mobile phone, smart glasses, AR (Augmented Reality) device, VR (Virtual Reality) device, or the terminal 120 may also be a personal computer (PC), such as a portable computer and a desktop computer.
  • PC personal computer
  • the specific form of the client of the application may be different.
  • the application client may be a mobile client, a PC client, or a World Wide Web (Web) client.
  • Web World Wide Web
  • a DNS request can be initiated in the terminal 120.
  • the terminal 120 is connected to the server cluster 140 via a communication network.
  • the communication network is a wired network or a wireless network.
  • the server cluster 140 is a server, or is composed of several servers.
  • the server cluster 140 is used to provide a domain name query service based on the ECS protocol.
  • server cluster 140 may be used for ECS query process information.
  • the number of the above-mentioned terminals 120 may be more or less.
  • the above-mentioned terminal may be only one, or the above-mentioned terminals may be dozens or hundreds, or more.
  • the embodiment of the present application does not limit the number and device type of the terminals.
  • the wireless network or wired network described above uses standard communication technologies and/or protocols.
  • the network is typically the Internet, but may be any network, including but not limited to a local area network (LAN), a metropolitan area network (MAN), a wide area network (WAN), a mobile, wired or wireless network, a private network or any combination of virtual private networks.
  • technologies and/or formats including Hypertext Markup Language (HTML), Extensible Markup Language (XML), etc. are used to represent data exchanged over the network.
  • conventional encryption technologies such as Secure Socket Layer (SSL), Transport Layer Security (TLS), Virtual Private Network (VPN), and Internet Protocol Security (IPsec) may be used to encrypt all or some links.
  • SSL Secure Socket Layer
  • TLS Transport Layer Security
  • VPN Virtual Private Network
  • IPsec Internet Protocol Security
  • customized and/or dedicated data communication technologies may be used to replace or supplement the above-mentioned data communication technologies.
  • the server cluster 140 may be a physical server or may be composed of multiple servers, and may have any number of terminal devices, networks and servers according to implementation requirements. It should be noted that the welding control method provided in the embodiment of the present application is generally executed by the server 140, and accordingly, the welding control device may be entirely or partially arranged in the server 140.
  • Fig. 2 is a flow chart of an ECS query method according to an exemplary embodiment.
  • the method provided by the embodiment of the present disclosure can be executed by any electronic device with computing and processing capabilities, such as the server cluster 140 shown in Fig. 1.
  • the server cluster 140 is used as the execution subject for example description.
  • this embodiment includes steps S202 to S210 .
  • the local domain name server receives a domain name query request from a client. Including a source IP address, the local domain name server includes a sub-layer view and a parent layer view, and the parent layer view establishes a subordinate relationship with several of the sub-layer views.
  • the sub-layer view can be divided according to the broadband access point, and each sub-layer view corresponds to a broadband access address.
  • the sub-layer view is responsible for ECS query, and sets a loopback address as the Subnet data of the ECS query.
  • the sub-layer view does not store DNS records.
  • the parent layer view can be divided according to the view in the global scheduling server (GSLB), and the parent layer view can maintain a one-to-one correspondence with the GSLB view.
  • the parent layer view stores DNS records and corresponds to the query of the child layer view, but is not responsible for ECS query.
  • the local domain name server matches an access control list (ACL) according to the source IP address to determine the corresponding sub-layer view.
  • ACL access control list
  • ACL Access Control Lists
  • ACL Access Control Lists
  • the sub-layer view can correspond to multiple source IP addresses.
  • the relationship between the client's source IP address and the sub-layer view can be queried from the ACL.
  • S206 The child view initiates a DNS record query request to the corresponding parent view to determine whether the DNS entry stored in the parent view has a corresponding DNS record.
  • a DNS record can be the correspondence between a domain name and an IP address.
  • a DNS record can be an A record, including an IP address record corresponding to a domain name. When a corresponding DNS record exists, the IP address can be directly returned to the client.
  • a DNS record can also be a CNAME record, an MX record, a TXT record, an NS record, etc.
  • the sub-layer view initiates a domain name query request based on the ECS protocol, and returns the query result to the client.
  • the sub-layer view is responsible for initiating domain name queries and returning query results.
  • the sub-layer views can be divided according to the source IP address to ensure the accuracy of scheduling; the parent-layer view is responsible for saving domain name system entries (DNS entries), which can merge queries and storage to reduce the load on the local domain name server.
  • DNS entries domain name system entries
  • Fig. 3 is a flowchart showing steps of initiating a domain name query request based on the ECS protocol in a sub-layer view and returning a query result to the client according to an exemplary embodiment, specifically including steps S302-306.
  • the sublayer view initiates an ECS query request to the global scheduling server according to Subnet information, where the Subnet information includes a Loopback address.
  • the sub-layer view initiates a domain name query request with the agreed mapping address as the source, and the mapping table in the global scheduling server can determine the correspondence between the sub-layer view and the view in the global scheduling server.
  • the indication condition of the mapping relationship between the two can include the loopback address.
  • the global scheduling server schedules the corresponding CDN (Content Delivery Network) view according to the Subnet information, and returns the optimal CDN server node IP to the sub-layer view.
  • CDN Content Delivery Network
  • the sub-layer view returns the result to the client according to the response message of CDN GSLB.
  • CDN when CDN receives the domain name resolution request from the local domain name server, it enters the corresponding CDN view partition according to the mapping table. If there is a cache, it can return the result according to the cache record. If there is no cache in the CDN view partition, it will schedule according to the subnet information carried by the local domain name server and return the IP address of the optimal CDN node to the local domain name server.
  • the local domain name server receives the corresponding message from CDN GSLB, it caches the corresponding mapping address segment and returns the resolution result to the client through the sub-layer view.
  • the sub-layer view is responsible for initiating domain name query requests and returning query results, but is not responsible for storage, which reduces the load on the local server. Merge and store DNS entries through the parent layer view to meet storage requirements and avoid the problem of heavy load caused by too detailed storage classification.
  • FIG. 4 is a flowchart showing an ECS query method according to an exemplary embodiment, and further includes step S212 .
  • the global scheduling server adjusts the corresponding CDN view according to the CDN node change, and initiates a synchronization request to the local domain name server.
  • Fig. 5 is a flow chart showing a method for synchronizing a local domain name server view with a CDN view according to an exemplary embodiment, which specifically includes S502-508.
  • the global scheduling server obtains information of a newly added CDN node.
  • S504 The global scheduling server queries the corresponding CDN view according to the information of the newly added CDN node.
  • the global scheduling server triggers the local domain name server to synchronize views.
  • the global scheduling server triggers the synchronization view of the local domain name server by starting a synchronization interface with the local domain name server.
  • the vCDN management platform starts the vCDN software on the BRAS and names the node BRAS-vCDN-1; the vCDN management notifies GSLB through the interface that the BRAS-vCDN-1 node has been started.
  • GSLB queries whether there is a BRAS-vCDN-1 view and finds that the view has not been established.
  • GSLB establishes the BRAS-vCDN-1 view.
  • GSLB establishes the address ACL corresponding to the BRAS-vCDN-1 view, that is, the loopback address on the BRAS is added to the ACL;
  • GSLB starts the synchronization interface with the Local DNS and starts synchronizing the BRAS-vCDN-1 view.
  • Dividing CDN views based on CDN edge nodes can be applied to CDN edge node deployment application scenarios, which is conducive to starting automatic synchronization operations through broadband interface triggering. Automatic synchronization is fast and convenient.
  • FIG. 6 is a diagram showing a method for synchronizing a local domain name server view with a CDN view according to an exemplary embodiment.
  • the local domain name server performs a view synchronization operation according to the synchronization request initiated by the global scheduling server, which specifically includes steps S602-606.
  • the local domain name server receives a synchronization request
  • the local domain name server determines whether there is a corresponding parent layer view, and if not found, creates a corresponding parent layer view;
  • S606 The local domain name server adjusts the subordinate relationship between the child layer view and the newly created parent layer view according to the ACL.
  • Local DNS checks whether the parent layer has the BRAS-vCDN-1 view. If not, it creates the view. Local DNS adjusts the parent layer view corresponding to the sub-layer view BRAS-vCDN-1 to BRAS-vCDN-1 according to the BRAS-vCDN-1 view ACL planning.
  • ECS query device 700 according to this embodiment of the present invention with reference to Fig. 7.
  • the ECS query device 700 shown in Fig. 7 is only an example and should not bring any limitation to the functions and scope of use of the embodiment of the present invention.
  • the components of the ECS query device include: a receiving module 702, which is configured to receive an ECS request from a client as a local domain name server, wherein the ECS request includes a source IP address, and the local domain name server includes a sub-layer view and a parent layer view, and the parent layer view establishes a subordinate relationship with several of the sub-layer views; a matching module 704, which is configured to match the ACL according to the source IP address of the local domain name server to determine the corresponding sub-layer view; a query module 706, which is configured to initiate a DNS record query request from the sub-layer view to the corresponding parent layer view to determine whether a corresponding DNS record exists for the DNS entry stored in the parent layer view; if so, the parent layer view returns the DNS record to the sub-layer view, and the sub-layer view returns the DNS record to the client; if not, the sub-layer view initiates an ECS query to the client and returns the query result to the client.
  • a receiving module 702 which is configured to receive an E
  • the ECS query device 700 is described below with reference to FIG8.
  • the components of the ECS query device shown in FIG8 may also include: a first synchronization module 708, configured for the global scheduling server to adjust the corresponding CDN view according to the CDN node change, and initiate a synchronization request to the local domain name server; a second synchronization module 710, configured for the local domain name server to perform a view synchronization operation according to the synchronization request initiated by the global scheduling server.
  • the examples and application scenarios implemented by the above modules and corresponding steps are the same, but are not limited to the contents disclosed in the above method embodiments. It should be noted that the above modules as part of the device can be executed in a computer system such as a set of computer executable instructions.
  • an electronic device capable of implementing the above method is also provided.
  • the electronic device 900 according to this embodiment of the present invention is described below with reference to Fig. 9.
  • the electronic device 900 shown in Fig. 9 is only an example and should not bring any limitation to the functions and application scope of the embodiment of the present invention.
  • the electronic device 900 is presented in the form of a general computing device.
  • the components of the electronic device 900 may include but are not limited to: at least one processing unit 910, at least one storage unit 920, and a bus 930 connecting different system components (including the storage unit 920 and the processing unit 910).
  • the storage unit stores a program code, which can be executed by the processing unit 910, so that the processing unit 910 performs the steps according to various exemplary embodiments of the present invention described in the above "Exemplary Method" section of this specification.
  • the processing unit 910 can perform steps S202 to S210 as shown in Figure 2, as well as other steps defined in the ECS query method of the present disclosure.
  • the storage unit 920 may include a readable medium in the form of a volatile storage unit, such as a random access storage unit (RAM) 9201 and/or a cache storage unit 9202 , and may further include a read-only storage unit (ROM) 10203 .
  • RAM random access storage unit
  • ROM read-only storage unit
  • the storage unit 920 may also include a program/utility 9204 having a set (at least one) of program modules 9205, such program modules 9205 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.
  • program modules 9205 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.
  • Bus 930 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
  • the electronic device 900 may also communicate with one or more external devices 1000 (e.g., keyboards, pointing devices, Bluetooth devices, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 900, and/or communicate with any device that enables the electronic device 900 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input/output (I/O) interface 950.
  • the electronic device 900 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and/or public networks, such as the Internet) via a network adapter 960.
  • networks e.g., local area networks (LANs), wide area networks (WANs), and/or public networks, such as the Internet
  • the network adapter 960 communicates with other modules of the electronic device 900 via a bus 930. It should be understood that, although not shown in the figure, other hardware and/or software modules may be used in conjunction with the electronic device 900, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.
  • the technical solution according to the embodiment of the present disclosure can be embodied in the form of a software product, which can be Stored in a non-volatile storage medium (which may be a CD-ROM, USB flash drive, mobile hard disk, etc.) or on a network, including a number of instructions to enable a computing device (which may be a personal computer, server, terminal device, or network device, etc.) to execute a method according to an embodiment of the present disclosure.
  • a non-volatile storage medium which may be a CD-ROM, USB flash drive, mobile hard disk, etc.
  • a computing device which may be a personal computer, server, terminal device, or network device, etc.
  • the process described above with reference to the flowchart may be implemented as a computer program product, which includes: a computer program, which implements the above-mentioned domain name query method based on the ECS protocol when executed by a processor.
  • a computer-readable storage medium is also provided, on which a program product capable of implementing the above method of the present specification is stored.
  • various aspects of the present invention can also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to enable the terminal device to perform the steps according to various exemplary implementations of the present invention described in the above "Exemplary Method" section of the present specification.
  • a program product for implementing the above method according to an embodiment of the present invention is described, which can adopt a portable compact disk read-only memory (CD-ROM) and include program code, and can be run on a terminal device, such as a personal computer.
  • a readable storage medium can be any tangible medium containing or storing a program, which can be used by or in combination with an instruction execution system, an apparatus or a device.
  • the program product may use any combination of one or more readable media.
  • the readable medium may be a readable signal medium or a readable storage medium.
  • the readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.
  • Computer readable signal media may include data signals propagated in baseband or as part of a carrier wave, in which readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Readable signal media may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.
  • the program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.
  • Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages such as Java, C++, etc., and conventional procedural programming languages such as "C" or similar programming languages.
  • the program code may be executed entirely on the user computing device, partially on the user computing device, as a stand-alone software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device.
  • the remote computing device can be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (for example, using an Internet service provider to connect through the Internet).
  • LAN local area network
  • WAN wide area network
  • the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the implementation of the present disclosure.
  • a non-volatile storage medium which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.
  • a computing device which can be a personal computer, a server, a mobile terminal, or a network device, etc.

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Abstract

La présente divulgation concerne un procédé d'interrogation de nom de domaine sur la base d'un protocole ECS. Le procédé suppose de recevoir une demande d'interrogation de nom de domaine provenant d'un client. Un système de nom de domaine (DNS) local contient des vues d'une couche enfant et une vue d'une couche parent. Une relation subordonnée est établie entre les vues de la couche enfant et la vue de la couche parent. Le DNS local correspond à une ACL en fonction d'une adresse IP source et détermine une vue de la couche enfant correspondante. La vue de la couche enfant initie une demande d'interrogation d'enregistrement de DNS à la vue de la couche parent correspondante et détermine s'il existe un enregistrement de DNS correspondant dans une entrée de DNS stockée dans la vue de la couche parent. S'il existe un enregistrement de DNS correspondant, la vue de la couche parent renvoie l'enregistrement de DNS à la vue de la couche enfant. La vue de la couche enfant renvoie l'enregistrement de DNS au client. S'il n'existe pas d'enregistrement de DNS correspondant, la vue de la couche enfant initie une demande d'interrogation ECS. Grâce aux deux étages de vues, une vue de la couche enfant effectue une division en fonction d'une adresse IP source de façon à satisfaire une précision de planification. De plus, une vue de la couche parent est fournie pour commander efficacement une charge d'un DNS local au moyen d'une interrogation et d'un stockage combinés.
PCT/CN2023/117333 2022-10-12 2023-09-06 Procédé et appareil d'interrogation de nom de domaine sur la base d'un protocole ecs, support de stockage et dispositif WO2024078208A1 (fr)

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