CN109995887B - DNS (Domain name Server) analysis method and device and computer readable storage medium - Google Patents

Abstract

The present invention provides a DNS resolution method, a device and a computer-readable storage medium, which relate to the technical field of communications, and are used to improve a user's network access experience. The DNS resolution method of the present invention includes: receiving a domain name system DNS resolution request of a terminal, and including a URL in the DNS resolution request; Network resource IP address segment; if the IP address segment corresponding to the URL includes the local network resource IP address segment, polling is performed in the local network resource IP address segment; according to the polling result, send DNS resolution to the terminal response. The present invention can improve the user's network access experience.

Description

A kind of DNS resolution method, device and computer readable storage medium

technical field

The present invention relates to the field of communication technologies, and in particular, to a DNS (Domain Name System, Domain Name System) resolution method, device and computer-readable storage medium.

Background technique

PON (Passive Optical Network, passive optical network) technology is a mainstream technology for realizing FTTx (Fiber-to-the-x, optical fiber access). A typical PON system consists of the central office equipment OLT (optical line terminal, optical line terminal), the customer end equipment ONU (Optical Network Unit, optical network unit) and ODN (Optical Distribution Network, optical distribution network). ODN does not contain any active electronic devices and electronic power supply, all of which are composed of passive optical devices such as optical fiber and optical splitter/combiner (Splitter).

A home gateway is an FTTH (Fiber To The Home, Fiber To The Home) type ONU device that includes a gateway function, which realizes the interconnection between the internal terminals of the home network and the communication with the external network.

In the prior art solution, when the terminal device attached to the smart home gateway accesses a URL (Uniform Resource Locator, Uniform Resource Locator) domain name for the first time through the Internet routing WAN ((WideArea Network, wide area network)), the terminal device will send a request to the smart home gateway. Initiate a DNS resolution request for this URL. The smart home gateway will first query the local DNS cache. If the URL is hit, the smart home gateway will reply to the terminal with a DNS response; if the URL is not hit, the smart home gateway will send the resolution of the URL to the LDNS (local domain name system). ask. After receiving the resolution response of the LDNS, the smart home gateway caches the resolution result locally, and replies a DNS response to the terminal.

It can be seen from the above that the smart home gateway caches the DNS response from the local DNS server to the user, and implements a round-robin response to the hit user's DNS request after caching. After the smart home gateway performs polling in the local DNS cache, the priority feature of the original domain name and the corresponding IP segment is destroyed. Therefore, the DNS response returned to the terminal is not the closest to the user's local network resources, which affects the The user's network access experience.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a DNS resolution method, device, and computer-readable storage medium, so as to improve the user's network access experience.

In order to solve the above technical problems, in a first aspect, an embodiment of the present invention provides a DNS resolution method, which is applied to a gateway, including:

receiving a domain name system DNS resolution request of the terminal, including a uniform resource locator URL in the DNS resolution request;

According to the DNS resolution request, determine whether the IP address segment corresponding to the URL of the local cache includes the IP address segment of the network resource;

If the IP address segment corresponding to the URL includes the local network resource IP address segment, polling is performed in the local network resource IP address segment;

Send a DNS resolution response to the terminal according to the polling result.

Wherein, according to the DNS resolution request, determining whether the IP address segment corresponding to the URL in the local cache includes the IP address segment of the resources of the local network, including:

Query the local cache according to the DNS resolution request, and obtain the IP address segment corresponding to the URL;

Determine whether the IP address segment corresponding to the URL includes the IP address segment of the local network resource according to the database of the IP address segment of the local network resource obtained from the resource policy server of the local network and the IP address segment corresponding to the URL.

Wherein, before the receiving terminal's DNS resolution request, the method further includes:

Obtain the IP address segment database of the local network resources from the local network resource policy server.

Wherein, according to the DNS resolution request, determining whether the IP address segment corresponding to the URL in the local cache includes the IP address segment of the resources of the local network, including:

Query the local cache according to the DNS resolution request, and obtain the IP address segment corresponding to the URL;

According to the locally stored local network resource IP address segment database and the IP address segment corresponding to the URL, it is determined whether the local network resource IP address segment is included in the IP address segment corresponding to the URL.

Wherein, before the receiving terminal's DNS resolution request, the method further includes:

Receive DNS resolution packets from the local DNS server and cache them.

In the second aspect, an embodiment of the present invention provides a DNS resolution method, which is applied to a resource policy server of this network, including:

Send the local network resource IP address segment database to the gateway, so that after receiving the DNS resolution request of the terminal, the gateway determines whether the local network resource is included in the IP address segment corresponding to the locally cached URL according to the local network resource IP address segment database IP address segment, and when the IP address segment corresponding to the URL includes the local network resource IP address segment, polling is performed in the local network resource IP address segment, and a DNS resolution response is sent to the terminal according to the polling result ; wherein, the URL is included in the DNS resolution request.

In a third aspect, an embodiment of the present invention provides a DNS resolution device, including: a processor and a transceiver;

The transceiver is configured to receive a domain name system DNS resolution request of the terminal, and the DNS resolution request includes a uniform resource locator URL;

The processor is configured to determine, according to the DNS resolution request, whether the locally cached IP address segment corresponding to the URL includes the IP address segment of the local network resource; if the IP address segment corresponding to the URL includes the local network resource IP address segment, polling is performed in the IP address segment of the resource on this network;

The transceiver is configured to send a DNS resolution response to the terminal according to the polling result.

Wherein, the processor is further configured to query the local cache according to the DNS resolution request, and obtain the IP address segment corresponding to the URL; For the corresponding IP address segment, it is determined whether the IP address segment corresponding to the URL includes the IP address segment of the resources of the local network.

Wherein, the processor is further configured to acquire the IP address segment database of the local network resources from the local network resource policy server.

The processor is further configured to query the local cache according to the DNS resolution request to obtain the IP address segment corresponding to the URL; according to the locally stored IP address segment database of local resources and the IP address segment corresponding to the URL , and determine whether the IP address segment corresponding to the URL includes the IP address segment of the resources of the local network.

Wherein, the transceiver is further configured to receive and cache the DNS resolution message of the local DNS server.

In a fourth aspect, an embodiment of the present invention provides a DNS resolution apparatus, including: a processor and a transceiver;

The processor is configured to send the local network resource IP address segment database to the gateway through the transceiver, so that after receiving the DNS resolution request from the terminal, the gateway determines the locally cached resource IP address segment database according to the local network resource IP address segment database. Whether the IP address segment corresponding to the URL includes the IP address segment of the local network resource, and when the IP address segment corresponding to the URL includes the IP address segment of the local network resource, polling is performed in the IP address segment of the local network resource, Send a DNS resolution response to the terminal according to the polling result; wherein, the URL is included in the DNS resolution request.

In a fifth aspect, an embodiment of the present invention provides a DNS resolution device, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; the computer program is processed The steps in the method according to the first aspect are realized when the computer is executed; or the steps in the method according to the second aspect are realized when the computer program is executed by the processor.

In a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing a computer program, and when the computer program is executed by a processor, the steps in the method described in the first aspect are implemented; or the computer program The steps in the method of the second aspect are implemented when executed by a processor.

The beneficial effects of the above-mentioned technical solutions of the present invention are as follows:

In the embodiment of the present invention, by determining whether the IP address segment corresponding to the locally cached URL includes the IP address segment of the local network resource, the gateway implements priority scheduling of the local network resource IP address, and assigns the local network resource IP address that is closest to the user. The address is resolved to the user, thereby improving the user's access experience.

Description of drawings

1 is a flowchart of a DNS resolution method according to an embodiment of the present invention;

2 is a flowchart of a DNS resolution method according to an embodiment of the present invention;

3 is a flowchart of a DNS resolution method according to an embodiment of the present invention;

4 is a flowchart of a DNS resolution method according to an embodiment of the present invention;

5 is a schematic diagram of a DNS resolution apparatus according to an embodiment of the present invention;

6 is a schematic diagram of a DNS resolution apparatus according to an embodiment of the present invention;

7 is a schematic diagram of a DNS resolution device according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a DNS resolution device according to an embodiment of the present invention.

Detailed ways

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

As shown in FIG. 1 , the DNS resolution method according to the embodiment of the present invention, applied to a gateway, includes:

Step 101: Receive a domain name system DNS resolution request from a terminal, where the DNS resolution request includes a URL.

Step 102: According to the DNS resolution request, determine whether the locally cached IP address segment corresponding to the URL includes the local network resource IP address segment.

In this step, there may be the following two ways to determine whether the IP address segment corresponding to the URL in the local cache includes the IP address segment of the local network resource.

Mode 1: The gateway queries the local cache according to the DNS resolution request, obtains the IP address segment corresponding to the URL, and obtains the IP address segment database of the local network resources obtained from the local network resource policy server and the IP address segment corresponding to the URL, Determine whether the IP address segment corresponding to the URL includes the IP address segment of the resource on the local network.

If the IP address segment corresponding to the URL has an IP address located in the local network resource IP address segment database after comparison, then it is determined that the IP address segment corresponding to the URL includes the local network resource IP address segment, otherwise it is determined not to be include.

Mode 2: The gateway queries the local cache according to the DNS resolution request, obtains the IP address segment corresponding to the URL, and determines the corresponding IP address segment of the URL according to the locally stored local network resource IP address segment database and the IP address segment corresponding to the URL. Whether the IP address segment includes the IP address segment of the resources on this network.

If the IP address segment corresponding to the URL has an IP address located in the locally stored IP address segment database of local resources, then it is determined that the IP address segment corresponding to the URL includes the local network resource IP address segment, Otherwise be sure not to include.

Of course, in practical applications, it is not limited to the above two ways.

Step 103: If the IP address segment corresponding to the URL includes the local network resource IP address segment, perform polling in the local network resource IP address segment.

Step 104: Send a DNS resolution response to the terminal according to the polling result.

In the embodiment of the present invention, by determining whether the IP address segment corresponding to the locally cached URL includes the IP address segment of the local network resource, the gateway implements priority scheduling of the local network resource IP address, and assigns the local network resource IP address that is closest to the user. The address is resolved to the user, thereby improving the user's access experience.

As shown in FIG. 2 , the DNS resolution method according to the embodiment of the present invention is applied to the resource policy server of this network, including:

Step 201: Send the local network resource IP address segment database to the gateway, so that the gateway, after receiving the DNS resolution request from the terminal, determines whether the IP address segment corresponding to the locally cached URL includes the corresponding IP address segment according to the local network resource IP address segment database. When the IP address segment of the resources on the local network is included, and the IP address segment corresponding to the URL includes the IP address segment of the resources on the local network, polling is performed in the IP address segment of the resources on the local network, and the query is sent to the terminal according to the polling result. DNS resolution response; wherein, the URL is included in the DNS resolution request.

In the embodiment of the present invention, by determining whether the IP address segment corresponding to the locally cached URL includes the IP address segment of the local network resource, the gateway implements priority scheduling of the local network resource IP address, and assigns the local network resource IP address that is closest to the user. The address is resolved to the user, thereby improving the user's access experience.

In the embodiment shown in FIG. 3 , the DNS relay processing module in the gateway regularly interacts with the local network resource policy server to obtain the local network resource IP address segment database, that is, the local or local network IP address segment database. For the user's DNS resolution request hit in the gateway's local cache, the DNS relay module polls the IP address segment corresponding to the domain name in the cache according to the priority of local network resources (this province/local network), and resolves the response to the IP address in the network. to users. That is, if there is a local network resource IP address, the gateway only responds by polling among the local network resource IP addresses, otherwise it will poll normally.

As shown in Figure 3, the DNS resolution method according to the embodiment of the present invention includes:

Step 301: The gateway locally caches the DNS resolution message sent by the local DNS server (LNS).

Step 302: The DNS relay processing module interacts with the local network resource policy server at predetermined time intervals to obtain the local network resource IP address segment database, that is, the local province/local network IP address segment database. Wherein, the predetermined time interval can be arbitrarily set.

Step 303: The gateway receives the DNS resolution request initiated by the user, and the request includes the URL.

Step 304: The DNS relay processing module in the gateway queries the local DNS cache according to the DNS resolution request, and performs polling for the IP address segment corresponding to the domain name in the cache in the manner of local network resources (local province/local network) priority.

That is, the DNS relay processing module queries the local cache according to the DNS resolution request, obtains the IP address segment corresponding to the URL, and then compares the IP address segment corresponding to the URL and the local network obtained from the local network resource policy server. The resource IP address segment database is compared to determine whether the IP address segment corresponding to the URL has an IP address segment of the network resource. If there is a local network resource IP address segment, only polling responses are made between the local network resource IP addresses, otherwise, the polling is performed according to the method of the prior art.

Step 305, the intelligent gateway feeds back the DNS resolution response to the user.

In the embodiment shown in FIG. 4 , the DNS relay processing module stores a local network IP address segment database. For the user's DNS resolution request hit in the gateway's local cache, if there is a local network resource, it will only respond by polling between the local network resource IP addresses, otherwise it will be polled normally.

As shown in FIG. 4 , the DNS resolution method according to the embodiment of the present invention includes:

Step 401: The gateway locally caches the DNS resolution message sent by the local DNS server (LNS).

Step 402: The gateway receives a DNS resolution request initiated by the user, and the request includes a URL.

Step 403: The DNS relay processing module in the gateway queries the local DNS cache according to the DNS resolution request, and performs polling for the IP address segment corresponding to the domain name in the cache in the manner of local network resources (local province/local network) priority.

That is, the DNS relay processing module queries the local cache according to the DNS resolution request, obtains the IP address segment corresponding to the URL, and then compares the IP address segment corresponding to the URL with the stored local network IP address segment database. Yes, determine whether the IP address segment corresponding to the URL has an IP address segment for resources on the local network. If there is a local network resource IP address segment, only polling responses are made between the local network resource IP addresses, otherwise, the polling is performed according to the method of the prior art.

Step 404, the intelligent gateway feeds back the DNS resolution response to the user.

It can be seen from the above embodiments that, in the above embodiments, according to user service requirements, the DNS relay processing module of the gateway realizes The DNS resolution server responds to the user's DNS resolution result and performs priority scheduling, and resolves the IP of the network resource closest to the user to the user, which not only improves the user's access experience, but also achieves load balance among the accessed servers on the network. .

As shown in FIG. 5 , the DNS resolution apparatus according to the embodiment of the present invention includes: a processor 501 and a transceiver 502;

The transceiver 502 is configured to receive a domain name system DNS resolution request of the terminal, and the DNS resolution request includes a uniform resource locator URL;

The processor 501 is configured to determine, according to the DNS resolution request, whether the locally cached IP address segment corresponding to the URL includes the local network resource IP address segment; if the IP address segment corresponding to the URL includes the local network resource IP address segment; resource IP address segment, polling is performed in the resource IP address segment of the local network;

The transceiver 502 is configured to send a DNS resolution response to the terminal according to the polling result.

The processor 501 is further configured to query the local cache according to the DNS resolution request, and obtain the IP address segment corresponding to the URL; according to the local network resource IP address segment database obtained from the local network resource policy server and the For the IP address segment corresponding to the URL, it is determined whether the IP address segment corresponding to the URL includes the IP address segment of the resources on the local network.

Wherein, the processor 501 is further configured to acquire the IP address segment database of the local network resources from the local network resource policy server.

The processor 501 is further configured to query the local cache according to the DNS resolution request, and obtain the IP address segment corresponding to the URL; according to the locally stored IP address segment database of local resources and the IP address corresponding to the URL segment, and determine whether the IP address segment corresponding to the URL includes the IP address segment of the resources on the local network.

The transceiver 502 is further configured to receive and cache the DNS resolution message of the local DNS server.

For the working principle of the device of the present invention, reference may be made to the description of the foregoing method embodiments.

In the embodiment of the present invention, by determining whether the IP address segment corresponding to the locally cached URL includes the IP address segment of the local network resource, the gateway implements priority scheduling of the local network resource IP address, and assigns the local network resource IP address that is closest to the user. The address is resolved to the user, thereby improving the user's access experience.

As shown in FIG. 6 , the DNS resolution apparatus according to the embodiment of the present invention includes: a processor 601 and a transceiver 602;

The processor 601 is configured to send the local network resource IP address segment database to the gateway through the transceiver 602, so that the gateway determines the local network resource IP address segment database according to the local network resource IP address segment database after receiving the DNS resolution request of the terminal. Whether the IP address segment corresponding to the cached URL includes the resource IP address segment of the local network, and when the IP address segment corresponding to the URL includes the resource IP address segment of the local network, perform a round-trip in the resource IP address segment of the local network. and send a DNS resolution response to the terminal according to the polling result; wherein, the URL is included in the DNS resolution request.

For the working principle of the device of the present invention, reference may be made to the description of the foregoing method embodiments.

In the embodiment of the present invention, by determining whether the IP address segment corresponding to the locally cached URL includes the IP address segment of the local network resource, the gateway implements priority scheduling of the local network resource IP address, and assigns the local network resource IP address that is closest to the user. The address is resolved to the user, thereby improving the user's access experience.

As shown in FIG. 7 , the DNS resolution device according to the embodiment of the present invention includes:

The processor 700 is configured to read the program in the memory 720, and perform the following processes: receiving the DNS resolution request of the terminal through the transceiver 710, and including the uniform resource locator URL in the DNS resolution request; according to the DNS resolution Request, determine whether the IP address segment corresponding to the URL in the local cache includes the IP address segment of the local network resource; if the IP address segment corresponding to the URL includes the IP address segment of the local network resource, then the resource IP Perform polling in the address segment; send a DNS resolution response to the terminal according to the polling result;

The transceiver 710 is used to receive and transmit data under the control of the processor 700 .

7, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 700 and various circuits of memory represented by memory 720 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 710 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other devices over a transmission medium. The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 in performing operations.

The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 in performing operations.

The processor 700 is also used to read the computer program, and perform the following steps:

Query the local cache according to the DNS resolution request, and obtain the IP address segment corresponding to the URL;

Determine whether the IP address segment corresponding to the URL includes the IP address segment of the local network resource according to the database of the IP address segment of the local network resource obtained from the resource policy server of the local network and the IP address segment corresponding to the URL.

The processor 700 is also used to read the computer program, and perform the following steps:

Obtain the IP address segment database of the local network resources from the local network resource policy server.

The processor 700 is also used to read the computer program, and perform the following steps:

Query the local cache according to the DNS resolution request, and obtain the IP address segment corresponding to the URL;

According to the locally stored local network resource IP address segment database and the IP address segment corresponding to the URL, it is determined whether the local network resource IP address segment is included in the IP address segment corresponding to the URL.

The processor 700 is also used to read the computer program, and perform the following steps:

Receive DNS resolution packets from the local DNS server and cache them.

As shown in FIG. 8 , the DNS resolution device according to the embodiment of the present invention includes:

The processor 800 is configured to read the program in the memory 820, and perform the following process: send the local network resource IP address segment database to the gateway through the transceiver 810, so that the gateway, after receiving the DNS resolution request of the terminal, according to this The network resource IP address segment database determines whether the IP address segment corresponding to the locally cached URL includes the local network resource IP address segment, and when the local network resource IP address segment is included in the IP address segment corresponding to the URL, the local resource IP address segment is included in the local resource IP address segment. Perform polling in the IP address segment of the network resource, and send a DNS resolution response to the terminal according to the polling result; wherein, the URL is included in the DNS resolution request;

The transceiver 810 is used to receive and transmit data under the control of the processor 800 .

8, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 800 and various circuits of memory represented by memory 820 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 810 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other devices over a transmission medium. The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.

The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.

In addition, the computer-readable storage medium of the embodiment of the present invention is used to store a computer program, and the computer program can be executed by a processor to implement the following steps:

Send the local network resource IP address segment database to the gateway, so that after receiving the DNS resolution request of the terminal, the gateway determines whether the local network resource is included in the IP address segment corresponding to the locally cached URL according to the local network resource IP address segment database IP address segment, and when the IP address segment corresponding to the URL includes the local network resource IP address segment, polling is performed in the local network resource IP address segment, and a DNS resolution response is sent to the terminal according to the polling result ; wherein, the URL is included in the DNS resolution request.

The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.

In addition, the computer-readable storage medium of the embodiment of the present invention is used to store a computer program, and the computer program can be executed by a processor to implement the following steps:

receiving a domain name system DNS resolution request of the terminal, including a uniform resource locator URL in the DNS resolution request;

According to the DNS resolution request, determine whether the IP address segment corresponding to the URL of the local cache includes the IP address segment of the network resource;

If the IP address segment corresponding to the URL includes the local network resource IP address segment, polling is performed in the local network resource IP address segment;

Send a DNS resolution response to the terminal according to the polling result.

Wherein, according to the DNS resolution request, determining whether the IP address segment corresponding to the URL in the local cache includes the IP address segment of the resources of the local network, including:

Query the local cache according to the DNS resolution request, and obtain the IP address segment corresponding to the URL;

Determine whether the IP address segment corresponding to the URL includes the IP address segment of the local network resource according to the database of the IP address segment of the local network resource obtained from the resource policy server of the local network and the IP address segment corresponding to the URL.

Wherein, before the receiving terminal's DNS resolution request, the method further includes:

Obtain the IP address segment database of the local network resources from the local network resource policy server.

Wherein, according to the DNS resolution request, determining whether the IP address segment corresponding to the URL in the local cache includes the IP address segment of the resources of the local network, including:

Query the local cache according to the DNS resolution request, and obtain the IP address segment corresponding to the URL;

According to the locally stored local network resource IP address segment database and the IP address segment corresponding to the URL, it is determined whether the local network resource IP address segment is included in the IP address segment corresponding to the URL.

Wherein, before the receiving terminal's DNS resolution request, the method further includes:

Receive DNS resolution packets from the local DNS server and cache them.

In the several embodiments provided in this application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included individually, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or can be implemented in the form of hardware plus software functional units.

The above-mentioned integrated units implemented in the form of software functional units can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, and includes several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute some steps of the transceiving method described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM for short), Random Access Memory (RAM for short), magnetic disk or CD, etc. that can store program codes medium.

The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (14)

1. A DNS resolution method is applied to a gateway and comprises the following steps:

receiving a Domain Name System (DNS) resolution request of a terminal, wherein the DNS resolution request comprises a Uniform Resource Locator (URL);

determining whether the IP address field corresponding to the locally cached URL comprises a local network resource IP address field or not according to the DNS analysis request;

if the IP address field corresponding to the URL comprises a local network resource IP address field, polling is carried out in the local network resource IP address field;

and sending a DNS analysis response to the terminal according to the polling result.

2. The method according to claim 1, wherein the determining, according to the DNS resolution request, whether the IP address segment corresponding to the locally cached URL includes a local network resource IP address segment includes:

inquiring local cache according to the DNS analysis request to acquire an IP address field corresponding to the URL;

and determining whether the IP address field corresponding to the URL comprises the IP address field of the local network resource or not according to the IP address field database of the local network resource obtained from the local network resource policy server and the IP address field corresponding to the URL.

3. The method of claim 2, wherein prior to receiving the Domain Name System (DNS) resolution request of the terminal, the method further comprises:

and acquiring the local network resource IP address segment database from the local network resource strategy server.

4. The method according to claim 1, wherein the determining, according to the DNS resolution request, whether the IP address segment corresponding to the locally cached URL includes a local network resource IP address segment includes:

inquiring local cache according to the DNS analysis request to acquire an IP address field corresponding to the URL;

and determining whether the IP address field corresponding to the URL comprises the IP address field of the local network resource according to a local network resource IP address field database and the IP address field corresponding to the URL.

5. The method of claim 1, wherein prior to receiving the Domain Name System (DNS) resolution request for the terminal, the method further comprises:

and receiving and caching the DNS analysis message of the local DNS server.

6. A DNS analysis method is applied to a local network resource policy server and comprises the following steps:

sending a local network resource IP address segment database to a gateway, so that after receiving a DNS analysis request of a terminal, the gateway determines whether an IP address segment corresponding to a locally cached URL comprises a local network resource IP address segment according to the local network resource IP address segment database, and when the IP address segment corresponding to the URL comprises the local network resource IP address segment, polling is carried out in the local network resource IP address segment, and a DNS analysis response is sent to the terminal according to a polling result; wherein the URL is included in the DNS resolution request.

7. A DNS resolution apparatus, comprising: a processor and a transceiver;

the transceiver is used for receiving a Domain Name System (DNS) resolution request of a terminal, wherein the DNS resolution request comprises a Uniform Resource Locator (URL);

the processor is configured to determine whether an IP address field corresponding to the locally cached URL includes a local network resource IP address field according to the DNS resolution request; if the IP address field corresponding to the URL comprises a local network resource IP address field, polling is carried out in the local network resource IP address field;

and the transceiver is used for sending a DNS analysis response to the terminal according to the polling result.

8. The apparatus of claim 7, wherein the processor is further configured to query a local cache according to the DNS resolution request, and obtain an IP address segment corresponding to the URL; and determining whether the IP address field corresponding to the URL comprises the IP address field of the local network resource according to the IP address field database of the local network resource acquired from the local network resource policy server and the IP address field corresponding to the URL.

9. The apparatus of claim 8, wherein the processor is further configured to obtain the home network resource IP address segment database from the home network resource policy server.

10. The apparatus of claim 7, wherein the processor is further configured to query a local cache according to the DNS resolution request, and obtain an IP address segment corresponding to the URL; and determining whether the IP address field corresponding to the URL comprises the IP address field of the local network resource according to a local network resource IP address field database and the IP address field corresponding to the URL.

11. The apparatus of claim 7, wherein the transceiver is further configured to receive and cache a DNS resolution message from a local DNS server.

12. A DNS resolution apparatus, comprising: a processor and a transceiver;

the processor is used for sending a local network resource IP address segment database to a gateway through the transceiver, so that after the gateway receives a DNS analysis request of a terminal, whether an IP address segment corresponding to a locally cached URL comprises a local network resource IP address segment is determined according to the local network resource IP address segment database, when the IP address segment corresponding to the URL comprises the local network resource IP address segment, polling is carried out in the local network resource IP address segment, and a DNS analysis response is sent to the terminal according to a polling result; wherein the URL is included in the DNS resolution request.

13. A DNS resolution device, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; characterized in that the computer program realizes the steps in the method according to any one of claims 1 to 5 when executed by a processor; or which computer program, when being executed by a processor, carries out the steps of the method as claimed in claim 6.

14. A computer-readable storage medium for storing a computer program, wherein the computer program, when executed by a processor, implements the steps in the method according to any one of claims 1 to 5; or which computer program, when being executed by a processor, carries out the steps of the method as claimed in claim 6.

Images