CN108462759B - Domain name resolution method and device - Google Patents
Domain name resolution method and device Download PDFInfo
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- CN108462759B CN108462759B CN201710095758.1A CN201710095758A CN108462759B CN 108462759 B CN108462759 B CN 108462759B CN 201710095758 A CN201710095758 A CN 201710095758A CN 108462759 B CN108462759 B CN 108462759B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
Abstract
The invention provides a domain name resolution method and a domain name resolution device, wherein a Domain Name System (DNS) record of a user is obtained from a DNS server of a domain name system; storing DNS records, wherein the DNS records comprise one-to-one correspondence of N domain names and N network protocol IP addresses, and N is an integer greater than 0; when a first domain name input by a user is acquired, a first IP address corresponding to the first domain name is acquired according to the DNS record. The domain name resolution method and the domain name resolution device provided by the invention reduce frequent communication between the electronic equipment and the DNS server.
Description
Technical Field
The present invention relates to internet technologies, and in particular, to a domain name resolution method and apparatus.
Background
The Domain Name System (DNS) is a distributed database on the internet where Domain names and IP addresses are mapped to each other. When a user accesses the host of other servers on the Internet by using the electronic equipment, the DNS server converts the domain name of the host input by the user into a network Protocol (IP) address of the host, so that the user can access the Internet more conveniently. The user does not need to remember the IP address number string of the host name, but directly inputs the domain name of the host on the electronic equipment, and the host of other servers can be directly accessed through the domain name of the host.
In the prior art, after a user inputs a domain name each time, an electronic device needs to send the domain name to a DNS server, and the DNS server converts the domain name into an IP address and then returns the IP address to the electronic device. The RFC standard of the DNS defines a local DNS cache library of the electronic equipment, and after the electronic equipment sends the domain name to the DNS server and receives the IP address each time, the corresponding relation between the domain name and the IP address is stored in the local DNS cache library. After the user inputs the domain name again, the corresponding relation of converting the domain name into the IP address is preferably searched in the local DNS cache library so as to reduce frequent and independent communication between the electronic equipment and the DNS server.
By adopting the prior art, because the domain names frequently visited by different users are different, when the user changes the electronic equipment or different users use the same electronic equipment, the electronic equipment still needs to communicate with the DNS server frequently.
Disclosure of Invention
The invention provides a domain name resolution method and device, which reduce frequent communication between electronic equipment and a DNS (domain name server).
The invention provides a domain name resolution method, which comprises the following steps: acquiring a DNS record of a user from a DNS server of a domain name system; storing the DNS record, wherein the DNS record comprises a one-to-one correspondence relationship between N domain names and N network protocol IP addresses, and N is an integer greater than 0;
And when the first domain name input by the user is acquired, acquiring a first IP address corresponding to the first domain name according to the DNS record.
In an embodiment of the present invention, the obtaining, according to the DNS record, a first IP address corresponding to the first domain name includes:
and when the N domain names of the DNS record comprise the first domain name, acquiring the first IP address corresponding to the first domain name from the DNS record.
In an embodiment of the present invention, the obtaining, according to the DNS record, a first IP address corresponding to the first domain name further includes:
when the first domain name is not included in the N domain names of the DNS records, sending a domain name resolution request to the DNS server, wherein the domain name resolution request includes the first domain name;
and receiving the first IP address sent by the DNS server.
In an embodiment of the present invention, after receiving the first IP address sent by the DNS server, the method further includes:
storing the corresponding relation between the first domain name and the first IP address;
and when the DNS record updating time is up, sending the corresponding relation between the first domain name and the first IP address to the DNS server so that the DNS server updates the DNS record of the user according to the corresponding relation between the first domain name and the first IP address.
In an embodiment of the present invention, the method further includes:
and when the first updating time is up, sending the access record of the first domain name to the DNS server, so that the DNS server updates the DNS record of the user according to the access record of the first domain name and the corresponding relation between the first domain name and the first IP address.
In an embodiment of the present invention, the method further includes:
and receiving the updated DNS record sent by the DNS server when the second updating time is up.
The present invention provides a domain name resolution device, comprising:
the DNS record acquisition module is used for acquiring DNS records of a user from a domain name system DNS server; storing the DNS record, wherein the DNS record comprises a one-to-one correspondence relationship between N domain names and N network protocol IP addresses, and N is an integer greater than 0;
and the domain name resolution module is used for acquiring a first IP address corresponding to the first domain name according to the DNS record when the first domain name input by the user is acquired.
In an embodiment of the present invention, the domain name resolution module is specifically configured to, when the N domain names of the DNS record include the first domain name, obtain the first IP address corresponding to the first domain name from the DNS record.
In an embodiment of the present invention, the method further includes: a receiving module;
the domain name resolution module is specifically configured to send a domain name resolution request to the DNS server when the first domain name is not included in the N domain names recorded by the DNS, where the domain name resolution request includes the first domain name;
the receiving module is configured to receive the first IP address sent by the DNS server.
In an embodiment of the present invention, the method further includes: the device comprises a storage module and a sending module;
the storage module is used for storing the corresponding relation between the first domain name and the first IP address;
the sending module is used for sending the corresponding relation between the first domain name and the first IP address to the DNS server when the DNS record updating time is up, so that the DNS server updates the DNS record of the user according to the corresponding relation between the first domain name and the first IP address.
In an embodiment of the present invention, the sending module is further configured to send the access record of the first domain name to the DNS server when the first update time arrives, so that the DNS server updates the DNS record of the user according to the access record of the first domain name and the corresponding relationship between the first domain name and the first IP address.
In an embodiment of the present invention, the receiving module is further configured to receive the updated DNS record sent by the DNS server when a second update time arrives.
The invention provides a domain name resolution method and a domain name resolution device, wherein a Domain Name System (DNS) record of a user is obtained from a DNS server of a domain name system; storing DNS records, wherein the DNS records comprise one-to-one correspondence of N domain names and N network protocol IP addresses, and N is an integer greater than 0; when a first domain name input by a user is acquired, a first IP address corresponding to the first domain name is acquired according to the DNS record. The domain name resolution method and the domain name resolution device provided by the invention reduce frequent communication between the electronic equipment and the DNS server.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a domain name resolution method according to a first embodiment of the present invention;
Fig. 2 is a schematic flow chart of a second domain name resolution method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a domain name resolution device according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second domain name resolution device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 1 is a flowchart illustrating a first embodiment of a domain name resolution method according to the present invention. As shown in fig. 1, the domain name resolution method of this embodiment includes:
s101: the method comprises the steps of obtaining DNS records of a user from a DNS server of a domain name system, and storing the DNS records, wherein the DNS records comprise one-to-one correspondence of N domain names and N IP addresses of network protocols, and N is an integer larger than 0.
Specifically, the main body of the implementation of the present embodiment may be any electronic device capable of connecting to the internet. For example: a mobile phone, a tablet computer or a computer, etc. This step S101 may be performed by the electronic device when the user first connects to the internet through the electronic device for the first time. When a user connects to the internet through the electronic equipment, the DNS record of the user is obtained from the DNS server and is stored in a user DNS cache library in the electronic equipment. The DNS record includes a one-to-one correspondence between N domain names and N network protocol IP addresses, where N is an integer greater than 0.
Optionally, the DNS record may include, for example, the top N domain names and IP addresses that are used by the user, i.e., most frequently visited by the user. For example: the DNS server stores DNS records of all registered users and allocates a user name and a password to each user. When a first user uses the mobile phone, after the first user logs in a DNS server by using a user name and a password of the first user through the mobile phone, the mobile phone acquires a DNS record of the first user from the DNS server and stores the DNS record in a storage space of the mobile phone. The DNS records of the first user include, for example, the first 100 DNS records that are most frequently accessed when the first user uses another electronic device to access the internet, that is, the one-to-one correspondence relationship between 100 domain names and 100 IP addresses. It should be noted that the present embodiment is not limited thereto.
S102: when a first domain name input by a user is acquired, a first IP address corresponding to the first domain name is acquired according to the DNS record.
Specifically, when the electronic device obtains the first domain name input by the user, that is, the user wishes to access the content of the first IP address corresponding to the first domain name. The electronic device obtains the first IP address corresponding to the first domain name from the DNS record according to the DNS record obtained in S101. Because the DNS record is related to the user and can be understood as a user-level database, if the first domain name input by the user is in the DNS record, the electronic device directly obtains the first IP address corresponding to the first domain name from the DNS record without sending the first domain name to the DNS server and obtaining the first IP address by analyzing the first domain name by the DNS server, thereby reducing frequent communication between the electronic device and the DNS server, saving resource consumption, and improving the speed at which the server, that is, the electronic device, accesses the first IP address.
Fig. 2 is a flowchart illustrating a second embodiment of a domain name resolution method according to the present invention. As shown in fig. 2, the present embodiment includes:
s201: when the N domain names of the DNS records comprise a first domain name, a first IP address corresponding to the first domain name is obtained from the DNS records.
Specifically, if the N domain names of the DNS record include a first domain name input by the user, the electronic device directly obtains a first IP address corresponding to the first domain name from the DNS record.
S202: when the first domain name is not included in the N domain names of the DNS records, sending a domain name resolution request to the DNS server, wherein the domain name resolution request includes the first domain name.
Specifically, S202 and S201 are parallel schemes, and if the N domain names in the DNS record do not include the first domain name, the electronic device sends the first domain name to the DNS server through the domain name resolution request, so that the DNS server on the network side resolves the first domain name to obtain the first IP address.
S203: and receiving the first IP address sent by the DNS server.
Specifically, the DNS server sends the first IP address to the electronic device after resolving the first domain name to obtain the first IP address. The electronic device receives and thereby obtains the first IP address sent by the DNS server.
Further, in the above embodiment, after S203, the method further includes: storing the corresponding relation between the first domain name and the first IP address; and when the DNS record updating time is up, sending the corresponding relation between the first domain name and the first IP address to the DNS server so that the DNS server updates the DNS record of the user according to the corresponding relation between the first domain name and the first IP address.
If the first domain name is not included in the N domain names of the DNS record, after S203, the first domain name accessed by the user, that is, the domain name not in the DNS record, is stored in the local storage unit of the electronic device, and the corresponding relationship between the first domain name and the first IP address is stored at the same time. And when the DNS record updating time is up, sending the corresponding relation between the first domain name and the first IP address to the DNS server so that the DNS server updates the DNS record of the user according to the corresponding relation between the first domain name and the first IP address. Alternatively, the DNS record update time may be one hour or one day.
Further, in the above embodiment, the method further includes:
and when the first updating time is up, sending the access record of the first domain name to the DNS server, so that the DNS server updates the DNS record of the user according to the access record of the first domain name and the corresponding relation between the first domain name and the first IP address.
For example: and when the first updating time is up, sending the access records of all the first domain names accessed by the user in the first time period to the DNS server, so that the DNS server updates the DNS records of the user according to the access records of the first domain names and the corresponding relation between the first domain names and the first IP addresses. The access record comprises an access cycle, an access habit, an access frequency and the like of the user accessing the first domain name.
Further, in the above embodiment, the method further includes:
and receiving the updated DNS record sent by the DNS server when the second updating time is up.
For example: and when the second updating time is up, the DNS server sends the updated DNS record to the electronic equipment, and the electronic equipment receives the updated DNS record sent by the DNS server.
Optionally, in each of the above embodiments, if the N domain names of the DNS record do not include the first domain name input by the user, the first IP address may be obtained from the DNS cache library conforming to rfc (request For comments) standard through the first domain name, and if the DNS cache library still does not include the first domain name, the first domain name is sent to the DNS server, so that the DNS server resolves the first domain name to obtain the first IP address.
Fig. 3 is a schematic structural diagram of a domain name resolution device according to a first embodiment of the present invention. As shown in fig. 3, the domain name resolution apparatus of the present embodiment includes: a DNS record acquisition module 301 and a domain name resolution module 302. The DNS record obtaining module 301 is configured to obtain a DNS record of a user from a domain name system DNS server, and store the DNS record, where the DNS record includes a one-to-one correspondence relationship between N domain names and N network protocol IP addresses, and N is an integer greater than 0. The domain name resolution module 302 is configured to, when a first domain name input by a user is obtained, obtain a first IP address corresponding to the first domain name according to a DNS record.
The apparatus shown in this embodiment is used to execute the domain name resolution method shown in fig. 1, and the implementation manner is similar to the principle and is not described again.
Fig. 4 is a schematic structural diagram of a second domain name resolution device according to an embodiment of the present invention. The embodiment shown in fig. 4 further includes, in addition to the above embodiments: a receiving module 401, a storing module 402 and a sending module 403.
Further, in the foregoing embodiment, the domain name resolution module 302 is specifically configured to, when the N domain names of the DNS record include a first domain name, obtain a first IP address corresponding to the first domain name from the DNS record.
The domain name resolution module 302 is specifically configured to send a domain name resolution request to the DNS server when the first domain name is not included in the N domain names recorded in the DNS record, where the domain name resolution request includes the first domain name. The receiving module 401 is configured to receive a first IP address sent by a DNS server.
Further, in the foregoing embodiment, the storage module 402 is configured to store a correspondence between the first domain name and the first IP address. The sending module 403 is configured to send the corresponding relationship between the first domain name and the first IP address to the DNS server when the DNS record update time is reached, so that the DNS server updates the DNS record of the user according to the corresponding relationship between the first domain name and the first IP address.
Further, in the foregoing embodiment, the sending module 403 is further configured to send the access record of the first domain name to the DNS server when the first update time arrives, so that the DNS server updates the DNS record of the user according to the access record of the first domain name and the corresponding relationship between the first domain name and the first IP address.
The receiving module 401 is further configured to receive the updated DNS record sent by the DNS server when the second update time arrives.
The apparatus shown in this embodiment is used to execute the domain name resolution method shown in fig. 2, and the implementation manner is similar to the principle and will not be described again.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A domain name resolution method is characterized by comprising the following steps:
acquiring a DNS record of a user from a DNS server of a domain name system, and storing the DNS record, wherein the DNS record comprises a one-to-one correspondence relationship between N domain names and N IP addresses, and N is an integer greater than 0;
when a first domain name input by the user is acquired, if the N domain names of the DNS record comprise the first domain name, acquiring a first IP address corresponding to the first domain name from the DNS record; if the first domain name is not included in the N domain names recorded by the DNS, sending a domain name resolution request to the DNS, wherein the domain name resolution request includes the first domain name, and receiving the first IP address sent by the DNS.
2. The method of claim 1, wherein after receiving the first IP address sent by the DNS server, further comprising:
storing the corresponding relation between the first domain name and the first IP address;
and when the DNS record updating time is up, sending the corresponding relation between the first domain name and the first IP address to the DNS server so that the DNS server updates the DNS record of the user according to the corresponding relation between the first domain name and the first IP address.
3. The method of claim 2, further comprising:
and when first updating time is up, sending the access record of the first domain name to the DNS server, so that the DNS server updates the DNS record of the user according to the access record of the first domain name and the corresponding relation between the first domain name and the first IP address.
4. The method of claim 2 or 3, further comprising:
and receiving the updated DNS record sent by the DNS server when the second updating time is up.
5. A domain name resolution apparatus, comprising:
the system comprises a DNS record acquisition module, a DNS record acquisition module and a DNS record storage module, wherein the DNS record acquisition module is used for acquiring a DNS record of a user from a domain name system DNS server and storing the DNS record, the DNS record comprises a one-to-one correspondence relationship of N domain names and N network protocol IP addresses, and N is an integer greater than 0;
a domain name resolution module, configured to, when the N domain names of the DNS record include a first domain name, obtain, from the DNS record, a first IP address corresponding to the first domain name; when the first domain name is not included in the N domain names of the DNS records, sending a domain name resolution request to the DNS server, wherein the domain name resolution request includes the first domain name;
A receiving module, configured to receive the first IP address sent by the DNS server.
6. The apparatus of claim 5, further comprising: the device comprises a storage module and a sending module;
the storage module is used for storing the corresponding relation between the first domain name and the first IP address;
the sending module is used for sending the corresponding relation between the first domain name and the first IP address to the DNS server when the DNS record updating time is up, so that the DNS server updates the DNS record of the user according to the corresponding relation between the first domain name and the first IP address.
7. The apparatus according to claim 6, wherein the sending module is further configured to send the access record of the first domain name to the DNS server when a first update time arrives, so that the DNS server updates the DNS record of the user according to the access record of the first domain name and the corresponding relationship between the first domain name and the first IP address.
8. The apparatus according to claim 6 or 7,
the receiving module is further configured to receive the updated DNS record sent by the DNS server when a second update time arrives.
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| CN108989487A (en) * | 2018-09-06 | 2018-12-11 | 北京泰策科技有限公司 | CDN Optimization Scheduling based on local dns |
| CN109347945A (en) * | 2018-10-12 | 2019-02-15 | 北京天融信网络安全技术有限公司 | A kind of method and apparatus of nslookup |
| CN111541798B (en) * | 2020-04-24 | 2022-09-13 | 东软睿驰汽车技术（沈阳）有限公司 | Domain name resolution method and device and electronic equipment |
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| CN103581213A (en) * | 2012-07-19 | 2014-02-12 | 阿里巴巴集团控股有限公司 | Shared Hosts file application method, equipment and system |
| CN104539603A (en) * | 2014-12-22 | 2015-04-22 | 中国科学院计算机网络信息中心 | Safe DNS system based on local analysis and DNS security analysis method |
| CN106331201A (en) * | 2015-07-01 | 2017-01-11 | 中兴通讯股份有限公司 | Domain name system resource record caching control method and server |
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| US8843153B2 (en) * | 2010-11-01 | 2014-09-23 | Seven Networks, Inc. | Mobile traffic categorization and policy for network use optimization while preserving user experience |
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| CN103581213A (en) * | 2012-07-19 | 2014-02-12 | 阿里巴巴集团控股有限公司 | Shared Hosts file application method, equipment and system |
| CN104539603A (en) * | 2014-12-22 | 2015-04-22 | 中国科学院计算机网络信息中心 | Safe DNS system based on local analysis and DNS security analysis method |
| CN106331201A (en) * | 2015-07-01 | 2017-01-11 | 中兴通讯股份有限公司 | Domain name system resource record caching control method and server |
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