CN115473870B - Top-level domain name resolution method, system, electronic equipment and storage medium - Google Patents
Top-level domain name resolution method, system, electronic equipment and storage medium Download PDFInfo
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Abstract
The application provides a top-level domain name resolution method, a system, electronic equipment and a storage medium, and relates to the field of network management. The top-level domain name resolution method comprises the following steps: determining a target authority server based on a target top-level domain name, wherein the target top-level domain name is a top-level domain name requested to be analyzed; the target authority server is a redundant authority server and/or a preset authority server; the preset authoritative server is an authoritative server which is preset in the recursion server and comprises an authoritative server corresponding to the target top-level domain name; the redundant authoritative server and the recursion server are in the same region; and selecting the target authority server to analyze the target top-level domain name so as to obtain an analysis result of the target top-level domain name. By the method, the time delay for resolving the top-level domain name can be reduced, the resolving failure condition can be reduced, and the user Internet surfing experience can be improved.
Description
Technical Field
The present application relates to the field of network management, and in particular, to a top-level domain name resolution method, a top-level domain name resolution system, an electronic device, and a computer-readable storage medium.
Background
The authoritative server may resolve the domain name to obtain the IP (Internet Protocol Address ) of the domain name. The authority server comprises a root server, a top-level domain name authority server and a second-level domain name server. Currently, the recursive server has an authoritative server selection algorithm, which can select the authoritative server to resolve the domain name, specifically, when the recursive server receives a request for resolving a top domain name in a recursive manner, the recursive server determines a top domain name authoritative server corresponding to the top domain name from the root server, and then selects the top domain name authoritative server to resolve the top domain name.
However, the top domain name authority server is usually disposed at a management company of the top domain name, for example, the top domain name authority servers of the top domain names com and net are disposed abroad, and as the distance between the top domain name authority server and the recursion server is far, the recursion server selects the top domain name authority server far away to resolve the top domain name, a long delay may occur, and the long delay may cause failure in resolving the top domain name. Meanwhile, as the distance between the top-level domain name authority server and the recursion server is longer, the network connection between the top-level domain name authority server and the recursion server is easy to fail, so that the problem of failure in resolution of the top-level domain name occurs.
Disclosure of Invention
In view of the foregoing, the present application is directed to a top-level domain name resolution method, a top-level domain name resolution system, an electronic device, and a computer readable storage medium, so as to reduce delay in resolution of a top-level domain name and reduce resolution failure, and improve user internet experience.
In a first aspect, an embodiment of the present application provides a top-level domain name resolution method, applied to a recursive server, where the method includes: determining a target authority server based on a target top-level domain name, wherein the target top-level domain name is a top-level domain name requested to be analyzed; the target authority server is a redundant authority server and/or a preset authority server; the preset authoritative server is an authoritative server which is preset in the recursion server and comprises an authoritative server corresponding to the target top-level domain name; the redundant authoritative server and the recursion server are in the same region; and selecting the target authority server to analyze the target top-level domain name so as to obtain an analysis result of the target top-level domain name.
In the embodiment of the application, the redundant authoritative server and the recursive server are in the same region, so that the resolution by using the redundant authoritative server can effectively reduce the delay of domain name resolution and reduce the resolution failure problem caused by overlong delay. The preset authoritative server is an authoritative server which is pre-configured in the recursion server, and a user can reasonably set according to the requirements, so that the preset authoritative server has higher reliability, or the situation of analysis failure caused by overlong time delay can be effectively reduced due to lower time delay between the preset authoritative server and the recursion server, thereby improving the reliability of top-level domain analysis and the user surfing experience.
In one embodiment, before the determining the target authoritative server based on the target top-level domain name, the method further includes: and responding to the configuration operation of the preset authoritative server, and establishing a preset relation between the top-level domain name and the preset authoritative server.
In the embodiment of the application, the preset relation between the top-level domain name and the preset authoritative server is established in the recursive server, so that the recursive server does not need to inquire the top-level domain name server from the root server, the analysis process is simplified, and the analysis efficiency of the top-level domain name is improved.
In one embodiment, the determining the target authority server based on the target top-level domain name includes: and determining the target authority server based on the target top-level domain name, the preset authority server and the preset relation.
In the embodiment of the application, the target authority server for analyzing the target top domain name can be directly determined from the preset authority servers according to the preset relation, so that the top domain name authority server does not need to be inquired to the root server, the analysis process can be simplified, and the analysis efficiency of the top domain name is improved.
Before the target authority server is selected to resolve the target top-level domain name, the method further comprises: and when the fact that the preset authoritative server corresponding to the target top-level domain name cannot resolve the target top-level domain name is determined, determining the redundant authoritative server as the target authoritative server.
In the embodiment of the application, when the preset authoritative server is determined to be incapable of resolving the target top-level domain name, the redundant authoritative server is determined to be the target authoritative server, so that the redundant authoritative server can resolve the target top-level domain name, the situation that the top-level domain name cannot be resolved is reduced, and the reliability of resolving the domain name is improved.
In one embodiment, after the target authority server is selected to resolve the target top-level domain name, the method further includes: and when determining that the target authority server cannot resolve the target top-level domain name and determining to start a backup resolution mechanism, resolving the target top-level domain name based on a recursion resolution method.
In the embodiment of the application, after the backup analysis mechanism is started and the analysis of the target authority server fails, the target top-level domain name can be analyzed by using the recursion analysis method, so that the reliability of domain name analysis can be ensured, and the analysis failure condition can be reduced.
In one embodiment, the resolving the target top-level domain name based on the recursive resolution method includes: inquiring an authoritative server corresponding to the target top-level domain name from a root server, wherein the root server comprises a relation between the target top-level domain name and the authoritative server; and sending an analysis request to an authoritative server corresponding to the target top-level domain name so as to acquire an analysis result of the target top-level domain name.
In the embodiment of the application, the authoritative server corresponding to the target top-level domain name is inquired from the root server, so that the top-level domain name can be resolved by using the authoritative server corresponding to the target top-level domain name, and a resolution result is obtained. Therefore, an analysis mode except for the redundant authoritative server and the preset authoritative server can be provided, so that the reliability of analyzing the top-level domain name is improved, and the occurrence of analysis failure is reduced.
In one embodiment, the method further comprises: and outputting a resolution failure record of the target top-level domain name when the redundant authoritative server is determined to be incapable of resolving the target authoritative server and a backup resolution mechanism is determined not to be started.
In the embodiment of the application, when the backup analysis mechanism is not started, the analysis failure record is directly output, and the redundant authoritative server and the preset authoritative server are set in advance, so that the domain name query analysis request can be prevented from being sent to the unknown top-level domain name authoritative server, and the safety and confidentiality of domain name analysis are ensured.
In a second aspect, an embodiment of the present application provides a top-level domain name resolution system, including: the redundant authoritative server is used for resolving the target top-level domain name; a recursive server for performing the method of any one of the first aspects.
In a third aspect, an embodiment of the present application provides an electronic device, including a memory and a processor, where the memory stores computer readable instructions that, when executed by the processor, cause the processor to perform the method according to the first aspect.
In a fourth aspect, embodiments of the present application provide a computer readable storage medium having a computer program stored therein, which when run on a computer causes the computer to perform the method according to the first aspect.
Additional features and advantages of the disclosure will be set forth in the description which follows, or in part will be obvious from the description, or may be learned by practice of the techniques of the disclosure.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a top-level domain name resolution system according to an embodiment of the present application;
FIG. 2 is a flow chart of a top-level domain name resolution method according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a top domain name resolution system and an authoritative server for resolving a top domain name according to an embodiment of the present application;
FIG. 4 is a flow chart of a top-level domain name resolution method including a backup resolution mechanism according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Icon: a domain name resolution system 100; a recursion server 110; a redundant authoritative server 120; an electronic device 300; a processor 310; a memory 320.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
For ease of understanding, the present top-level domain name resolution method will be described before describing the present application in detail.
The authoritative server comprises a root server, a top-level domain name authoritative server and a second-level domain name authoritative server. The root server comprises a relationship between a top-level domain name authority server and a top-level domain name; the top-level domain name authority server comprises a relationship between the second-level domain name and the second-level domain name authority server and comprises an analysis result corresponding to each top-level domain name; the secondary domain name authority server comprises an analysis result corresponding to each secondary domain name.
Currently, in the recursion resolution process of the recursion server, when a domain name query message/request is acquired, the recursion server queries the root server, and the recursion server acquires a top-level domain name authority server corresponding to the domain name from the root server. And the recursion server inquires the domain name from the top-level domain name authority server, and if the domain name is the top-level domain name, the recursion server acquires an analysis result corresponding to the domain name from the top-level domain name authority server, wherein the analysis result comprises an IP address corresponding to the domain name. And if the domain name is a secondary domain name, the recursion server acquires a secondary domain name authority resolution result corresponding to the secondary domain name from the top-level domain name authority server.
The top-level domain name authority server is generally managed by each company and is generally arranged in a region where each company is located. For example, the top-level domain name authority server of com is located in the A-zone, the top-level domain name authority server of net is located in the B-zone, and the recursive server may be located in the C-zone. When the root server queries the domain name from the top-level domain name authority server, the problems of long resolution time delay, large influence by network faults and the like occur because the recursion server is far away from the top-level domain name authority server, in the recursion resolution, the resolution failure can be caused by the overlong resolution time delay, and a large number of domain names can be failed in resolution due to the network connection fault between the root server and the top-level domain name authority server.
In order to solve the above-mentioned problems, the present application provides a top-level domain name resolution system, referring to fig. 1, fig. 1 is a schematic structural diagram of a top-level domain name resolution system according to an embodiment of the present application, where the top-level domain name resolution system includes: redundant authoritative servers and recursive servers.
And the redundant authoritative server is used for resolving the top-level domain name.
In this embodiment, the redundant authoritative server is an authoritative server independently constructed in comparison with the top-level domain name authoritative server, and has the same function as the top-level domain name authoritative server. The implementation manner of the redundant authoritative server may refer to a top-level domain name authoritative server, which is not described herein.
In this embodiment, the redundant authoritative servers are deployed in the same region as the recursive servers. For example, a top-level domain name authority server for a top-level domain name is deployed at site a, a recursive server is deployed at site B, and a redundant authority server is deployed at site B. The different top-level domain names are provided with the corresponding top-level domain name authoritative servers, so that the different top-level domain names can be respectively provided with the redundant authoritative servers according to requirements.
And the recursion server is used for carrying out DNS (Domain NAME SYSTEM ) Domain name inquiry to all authority servers including the root server, the top-level Domain name authority server and the secondary Domain name authority server after receiving the request of Domain name inquiry resolution. In this embodiment, the recursive server may query the authoritative server for the top-level domain name to obtain the resolution result of the top-level domain name.
In one embodiment, the recursive server is pre-configured with information of a preset authority server.
In this embodiment, the preset authoritative server is one or more of top-level domain name authoritative servers. The information of the top-level domain name authority server is preconfigured in the recursion server, and the recursion server can communicate with the preset authority server, so that the recursion server can directly select the top-level domain name authority server to perform domain name inquiry and resolution.
In this embodiment, the recursive server further includes a preset relationship between the top-level domain name and the top-level domain name authority server. When the recursion server obtains a query analysis request for the top-level domain name, a preset authority server corresponding to the top-level domain name can be determined according to the relationship between the top-level domain name and the preset relationship.
In one embodiment, the information of the redundant authoritative server is preconfigured in the recursive server, including a communication protocol, a connection mode, and the like, and the recursive server is in communication connection with the redundant authoritative server. Thus, the recursion server can select a redundant authoritative server for domain name query and resolution.
Next, a process of implementing the top-level domain name resolution method by the recursive server will be described in detail.
Referring to fig. 2, fig. 2 is a flowchart of a top-level domain name resolution method according to an embodiment of the application, where the top-level domain name resolution method includes:
s110, determining a target authoritative server based on the target top-level domain name.
In this embodiment, the target top-level domain name is the top-level domain name requested to be resolved. Wherein the target top-level domain name is typically included in the domain name query resolution request, the recursion server, upon receipt of the domain name query resolution request, can determine the target top-level domain name from the domain name query resolution request.
After obtaining the target top-level domain name, the recursion server may select a top-level domain name authority server to resolve the target top-level domain name.
In one embodiment, determining a target authoritative server based on a target top-level domain name includes: and determining the target authority server based on the target top-level domain name, the preset authority server and the preset relation.
In this embodiment, the preset relationship between the top domain name and the preset authority server is stored in the recursive server, so that the preset authority server corresponding to the top domain name can be directly determined from all preset authority servers through the preset relationship. For example, when the top domain name.com has 10 top domain name authoritative servers, the preset authoritative servers may include 5 top domain name authoritative servers corresponding to the top domain name.com and 3 top domain name.cn corresponding top domain name authoritative servers, and the preset relationship may include a correspondence relationship between the top domain name.com and 5 preset authoritative servers, and when the target domain name is.com, the 5 preset authoritative servers corresponding to.com may be determined from all preset authoritative servers through the preset relationship.
In one embodiment, when configuring the recursive server, a preset relationship between the top-level domain name and the preset authoritative server is established in response to a configuration operation on the preset authoritative server.
In this embodiment, when configuring the preset authoritative server, a proper top-level domain name authoritative server may be selected for configuration from multiple aspects. For example, a top-level domain name authority server which is closer to the recursion server is selected as a preset authority server, so that delay is effectively reduced. Or the top-level domain name authoritative server with better stability is selected as the preset authoritative server, so that the stability between the recursion server and the preset authoritative server is effectively improved, and network faults are reduced. The configuration mode can be that data of the top-level domain name authoritative server is input for a user and used as a preset authoritative server, information of all the top-level domain name authoritative servers is stored, and selection is performed from the stored top-level domain name authoritative servers according to multiple factors such as a recursion server position, network connection and the like. It is to be understood that the foregoing is merely exemplary, and various configurations may be reasonably selected according to requirements and usage conditions, and the configurations should not be construed as limiting the present application.
Because the root server is used for querying the top domain name authority server corresponding to the top domain name, in this embodiment, the recursion server directly determines the top domain name authority server corresponding to the top domain name, so that a preset relationship between the top domain name and the preset authority server can be established, and when querying the target top domain name, the corresponding preset authority server can be determined through the preset relationship.
In an embodiment, when it is determined that the preset authority server corresponding to the target top-level domain name cannot resolve the target top-level domain name, the redundant authority server is determined to be the target authority server.
In this embodiment, the preset authority server corresponding to the target top-level domain name may not be able to resolve the target top-level domain name. For example, network connection failure or excessively long delay occurs, so that the preset authority server fails to resolve the target top-level domain name. In order to improve the stability of domain name resolution, the redundant authoritative server can be determined as a target authoritative server, so that the target top-level domain name is resolved by using the redundant authoritative server, and the stability of domain name resolution is ensured.
The redundant authoritative server and the recursive server are arranged in the same region, so that delay consumed by the recursive server for inquiring the top domain name from the top domain name authoritative server can be effectively reduced. Illustratively, the top domain name authority server of the top domain name com is set at the A-site, and the delay for query resolution by the recursion server to the top domain name authority server of the top domain name com is greater than 200ms. The redundant authoritative server and the recursive server are arranged in the same region, and the delay of query analysis by using the redundant authoritative server by the recursive server can be reduced to within 10ms, so that the analysis failure caused by overlong delay is effectively reduced.
And S120, selecting a target authority server to analyze the target top-level domain name.
In this embodiment, after determining the target authority server, the recursive server may select the target authority server to resolve the target top-level domain name, so as to obtain a resolution result of the target top-level domain name. The method for resolving the target top-level domain name by the target authoritative server may refer to the prior art, and will not be described herein.
The process of the recursion server selecting the target authority server to resolve the target top-level domain name may be: the recursion server sends an analysis request including a target top-level domain name to a target authority server; after receiving the resolution request, the target authority server can acquire a resolution result corresponding to the target top domain name from the resolution results stored in the target authority server, or the target authority server resolves the target top domain name to acquire the resolution result; the recursion server obtains the resolution result from the target authority server.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating a top domain name resolution system and an authoritative server for resolving a top domain name according to an embodiment of the present application.
For ease of understanding, an alternative embodiment is provided herein, the implementation comprising: after obtaining the target top-level domain name, determining a target authoritative server according to the target top-level domain name; when the target authoritative server is a preset authoritative server, namely a top-level domain name authoritative server, the recursion server selects the preset authoritative server to analyze the target top-level domain name so as to obtain an analysis result; if the preset authority server cannot analyze, the redundant authority server can be used for analyzing the target top-level domain name, and the recursion server obtains an analysis result from the redundant authority server.
In the embodiment of the application, the redundant authoritative server and the recursive server are in the same region, so that the resolution by using the redundant authoritative server can effectively reduce the delay of domain name resolution and reduce the resolution failure problem caused by overlong delay. The preset authoritative server is an authoritative server which is pre-configured in the recursion server, and a user can reasonably set according to the requirements, so that the preset authoritative server has higher reliability, or the reliability of top-level domain name resolution can be improved due to lower time delay between the preset authoritative server and the recursion server, the analysis failure caused by overlong time delay is reduced, and the user surfing experience is improved.
In one embodiment, if the recursive server is not configured with a redundant authority server and/or a preset authority server, the top-level domain name may be resolved by using a recursive resolution method.
Wherein, the recursion analysis method comprises the following steps: inquiring an authoritative server corresponding to the target top-level domain name from a root server, wherein the root server comprises a relation between the target top-level domain name and the authoritative server; and sending an analysis request to an authoritative server corresponding to the target top-level domain name so as to acquire an analysis result of the target top-level domain name. The specific implementation of the recursive parsing method can refer to the prior art, and is not developed here.
Referring to fig. 4, fig. 4 is a flowchart of a top-level domain name resolution method including a backup resolution mechanism according to an embodiment of the application.
In one embodiment, when it is determined that the target authoritative server cannot resolve the target top-level domain name and it is determined that the backup resolution mechanism is opened, the target top-level domain name is resolved based on a recursive resolution method.
In this embodiment, the backup resolution mechanism is a manner of whether to perform normal resolution when resolution of both the redundant authoritative server and the preset authoritative server configured in the recursive server fails. The normal parsing method is the recursive parsing method in the above embodiment.
In this embodiment, in order to make resolution on the top-level domain name reliable, when the preset authoritative server and the redundant authoritative server cannot resolve the target domain name, the normal resolution flow may be returned, that is, the target top-level domain name is resolved by using a recursive resolution method. Thus, resolution of the target domain name can be made reliable.
In an embodiment, when it is determined that the target authority server cannot resolve the target top-level domain name and it is determined that the backup resolution mechanism is not opened, a resolution failure record of the target top-level domain name is output.
In this embodiment, whether to start the backup resolution mechanism may be set according to the domain name type and the requirement. For example, for some domain names with higher security and higher confidentiality, the backup resolution mechanism is not started, so that the problem that the security and confidentiality are affected by sending a request for inquiring and resolving the domain name to a corresponding authoritative server can be avoided. For another example, when the user wants to be able to surf the internet normally, the backup parsing mechanism can be opened to improve the user's internet surfing experience.
The top-level domain name resolution method described above may be implemented in the form of computer readable instructions that can be run on an electronic device as shown in fig. 5.
Referring to fig. 5, an embodiment of the present application further provides an electronic device 300, which may be used as an execution body of the top-level domain name resolution method, including: a processor 310 and a memory 320 communicatively coupled to the processor 310.
The memory 320 stores instructions executable by the processor 310, which are executed by the processor 310 to enable the processor 310 to perform the top-level domain name resolution method in the foregoing embodiment or to implement the functions of the medical data generalization apparatus described in the foregoing embodiment.
The processor 310 and the memory 320 may be connected by a communication bus. Or by some communication module, such as: wireless communication module, bluetooth communication module, 4G/5G communication module, etc.
The processor 310 may be an integrated circuit chip with signal processing capabilities. The processor 310 may be a general-purpose processor including a CPU (Central Processing Unit ), NP (Network Processor, network processor), etc.; but may be a digital signal processor, an application specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. Which may implement or perform the disclosed methods, steps, and logic blocks in embodiments of the application. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
Memory 320 may include, but is not limited to, RAM (Random Access Memory ), ROM (Read Only Memory), PROM (Programmable Read-Only Memory, programmable Read Only Memory), EPROM (Erasable Programmable Read-Only Memory, erasable Read Only Memory), EEPROM (Electric Erasable Programmable Read-Only Memory), etc.
It will be appreciated that the electronic device 300 may also include more general modules as needed by itself, and not described in detail in this embodiment of the application.
The embodiment of the application also provides a computer readable medium, and a computer program is stored on the computer readable storage medium, and when the computer program is run by a computer, the top-level domain name resolution method described in the previous embodiment is executed.
In the embodiments provided in the present application, it should be understood that the above description is only an embodiment of the present application and is not intended to limit the scope of the present application, and various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (7)
1. A top-level domain name resolution method, applied to a recursive server, the method comprising:
determining a target authority server based on a target top-level domain name, wherein the target top-level domain name is a top-level domain name requested to be analyzed;
The target authority server is a redundant authority server and/or a preset authority server; the preset authoritative server is an authoritative server which is preset in the recursion server and comprises an authoritative server corresponding to the target top-level domain name; the redundant authoritative server and the recursion server are in the same region, the redundant authoritative server is an authoritative server which is independently constructed compared with a top-level domain name authoritative server, and the redundant authoritative server has the same function as the top-level domain name authoritative server;
The target authority server is selected to analyze the target top-level domain name so as to obtain an analysis result of the target top-level domain name;
Before the determining the target authoritative server based on the target top-level domain name, the method further comprises: responding to configuration operation of the preset authoritative server, and establishing a preset relation between a top-level domain name and the preset authoritative server;
The determining the target authoritative server based on the target top-level domain name comprises the following steps: determining the target authority server based on the target top-level domain name, the preset authority server and the preset relation;
Before the target authority server is selected to resolve the target top-level domain name, the method further comprises: and when the fact that the preset authoritative server corresponding to the target top-level domain name cannot resolve the target top-level domain name is determined, determining the redundant authoritative server as the target authoritative server.
2. The method of claim 1, wherein after said selecting the target authoritative server resolves the target top-level domain name, the method further comprises:
And when determining that the target authority server cannot resolve the target top-level domain name and determining to start a backup resolution mechanism, resolving the target top-level domain name based on a recursion resolution method.
3. The method of claim 2, wherein said recursively resolving the target top-level domain name comprises:
Inquiring an authoritative server corresponding to the target top-level domain name from a root server, wherein the root server comprises a relation between the target top-level domain name and the authoritative server;
and sending an analysis request to an authoritative server corresponding to the target top-level domain name so as to acquire an analysis result of the target top-level domain name.
4. The method according to claim 1, wherein the method further comprises:
And outputting a resolution failure record of the target top-level domain name when the target authority server is determined to be incapable of resolving the target top-level domain name and a backup resolution mechanism is determined not to be started.
5. A top-level domain name resolution system, comprising:
The redundant authoritative server is used for resolving the target top-level domain name;
A recursive server for performing the method of any one of claims 1-4.
6. An electronic device comprising a memory and a processor, the memory having stored therein computer readable instructions that, when executed by the processor, cause the processor to perform the method of any of claims 1-4.
7. A computer readable storage medium, characterized in that the computer program is stored in the readable storage medium, which, when run on a computer, causes the computer to perform the method according to any one of claims 1-4.
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