CN108810180B - Scheduling method, device and terminal for domain name resolution redirection - Google Patents
Scheduling method, device and terminal for domain name resolution redirection Download PDFInfo
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- CN108810180B CN108810180B CN201710296168.5A CN201710296168A CN108810180B CN 108810180 B CN108810180 B CN 108810180B CN 201710296168 A CN201710296168 A CN 201710296168A CN 108810180 B CN108810180 B CN 108810180B
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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]
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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
- H04L61/30—Managing network names, e.g. use of aliases or nicknames
- H04L61/3015—Name registration, generation or assignment
- H04L61/3025—Domain name generation or assignment
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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
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
Abstract
The invention relates to a scheduling method, a device and a terminal for domain name resolution redirection, and belongs to the technical field of network communication. The method for scheduling domain name resolution redirection comprises the following steps: sending a domain name resolution request instruction to a first domain name resolution server; when the received response message responded by the first domain name resolution server carries the IP address of the server for processing the domain name resolution request instruction, sending the domain name resolution request instruction carrying the local IP address to the server for processing the domain name resolution request instruction; receiving a response message of a server response for processing the domain name resolution request instruction, wherein the response message carries the IP address of the resource server which is matched with the server for processing the domain name resolution request instruction according to the IP address of the local terminal and has the closest distance to the local terminal; and accessing the resource server closest to the local terminal according to the IP address of the resource server. The invention improves the speed of accessing data by the user.
Description
Technical Field
The present invention relates to the field of network communication technologies, and in particular, to a method, an apparatus, and a terminal for scheduling domain name resolution redirection.
Background
Since each operator typically has its own resource server for storing frequently used data for quick access by the user. In order to save the inter-network settlement cost, the access of the user to the resource server is generally carried out according to the information provided by the operator domain name resolution server at present. According to the Local DNS (Local domain name resolution server) network element of the operator, the user under the Local domain name resolution network element forwards the DNS request of the user to the DNS redirection subsystem through the Local DNS network element of the operator, so that the user can introduce the tcp connection establishing request to a cache system of the domain name resolution server of the operator for service subsequently.
Because the redirection subsystem of DNS domain name resolution can schedule the resource accessed by the user to the public resource service system appointed by the operator server according to the received domain name resolution request only according to the information provided by the operator domain name resolution server, the redirection subsystem of DNS can not carry out the near-geographic-position scheduling service according to the network address of the user, can not allow the A user to use the resource service system of the A place and can not allow the B user to use the resource service system of the B place, and the access speed of the resource can not be guaranteed due to the influence of the distance of different regional positions.
Disclosure of Invention
Based on this, it is necessary to provide a scheduling method for domain name resolution redirection for the problem that the speed of accessing the resource by the user is slow, the method includes:
sending a domain name resolution request instruction to a first domain name resolution server;
when the received response message responded by the first domain name resolution server carries the IP address of the server for processing the domain name resolution request instruction, sending the domain name resolution request instruction to the server for processing the domain name resolution request instruction, wherein the domain name resolution request instruction carries the local IP address;
receiving a response message of a server response for processing the domain name resolution request instruction, wherein the response message carries the IP address of the resource server which is matched with the server for processing the domain name resolution request instruction according to the IP address of the local terminal and has the closest distance to the local terminal;
and accessing the resource server closest to the local terminal according to the IP address of the resource server.
A scheduling apparatus for domain name resolution redirection, the apparatus comprising:
the first instruction sending module is used for sending a domain name resolution request instruction to a first domain name resolution server;
a second instruction sending module, configured to send a domain name resolution request instruction to a server that processes the domain name resolution request instruction when a received response message in response to the first domain name resolution server carries an IP address of the server that processes the domain name resolution request instruction, where the domain name resolution request instruction carries a home terminal IP address;
a second message receiving module, configured to receive a response message in response to the server that processes the domain name resolution request instruction, where the response message carries an IP address of a resource server closest to the home terminal, where the IP address of the resource server matches the IP address of the home terminal, and the server processes the domain name resolution request instruction;
and the access module is used for accessing the resource server closest to the local terminal according to the IP address of the resource server.
A terminal comprises the above domain name resolution redirection scheduling device.
According to the invention, the IP address of the server for processing the domain name resolution request instruction is sent to the home terminal, so that the home terminal can be directly connected with the server for processing the domain name resolution request instruction, and the first domain name resolution server is not needed, so that the server for processing the domain name resolution request instruction can directly match the IP address of the resource server closest to the home terminal according to the domain name resolution request instruction sent by the home terminal, and the home terminal can access the resource server closest to the home terminal, so that the access speed of the resource is not limited by the geographical position, the problem of slow access speed caused by the distance is avoided, and the access speed of a user is improved.
Drawings
FIG. 1 is a flow diagram of a method for scheduling domain name resolution redirections according to one embodiment of the present invention;
FIG. 2 is a flow diagram of a usage scenario of a scheduling method of domain name resolution redirection according to an embodiment of the present invention;
FIG. 3 is a flowchart of a usage scenario of a scheduling method of domain name resolution redirection according to another embodiment of the present invention;
fig. 4 is a block diagram illustrating an exemplary structure of a scheduling apparatus for domain name resolution redirection according to an embodiment of the present invention;
fig. 5 is a block diagram illustrating an exemplary structure of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 is a flowchart of a scheduling method of domain name resolution redirection according to an embodiment of the present invention, and the scheduling method of domain name resolution redirection according to an embodiment of the present invention shown in fig. 1 includes the following steps S101 to S104.
S101, sending a domain name resolution request instruction to a first domain name resolution server.
According to an example of this embodiment, the first domain name resolution server may be an operator server, or may be another server that cannot directly send the IP address of the user to the redirected domain name resolution server, and the domain name resolution request instruction sends a DNS req command to an LDNS (local domain name resolution server) of the operator.
In this step, the domain name resolution request instruction is a request message triggered when the user performs network access.
The step S101 is specifically to send a domain name resolution request instruction to the first domain name resolution server, so that the first domain name resolution server sends the domain name resolution request instruction to the redirected domain name resolution server. The redirected domain name resolution server may be understood as a third-party domain name resolution server, such as a domain name resolution server with chinese communication, a domain name resolution server with a dictionary, and so on.
The step S102 is specifically to send a domain name resolution request instruction to the server that processes the domain name resolution request instruction when the received response message of the first domain name resolution server response carries the IP address of the server that processes the domain name resolution request instruction, where the domain name resolution request instruction carries the local IP address.
In this step, the first domain name resolution server responds to the response message, for example, responds to a DNS ack message, and optionally, the domain name resolution request instruction sent to the server that processes the domain name resolution request instruction may be a domain name resolution request instruction in an HTTP format, or may be a domain name resolution request instruction in an HTTPs format.
In step S102, a response message of the domain name resolution request instruction, which is responded by the first domain name resolution server, is received, where the response message is an IP address of a server that is sent to the first domain name resolution server by the redirected domain name resolution server and carries the domain name resolution request instruction. The server for processing the domain name resolution request instruction may be a redirected domain name resolution server (such as a domain name resolution server in zhongxing communication), or may be another server with a domain name resolution function, that is, the server may be redirected to itself, or may be redirected to a data resolution server.
Fig. 2 is a flowchart of a usage scenario of a domain name resolution redirection scheduling method according to an embodiment of the present invention, and according to an example of the present embodiment, as shown in fig. 2, when the redirected domain name resolution server cannot process the domain name resolution request instruction, the redirected domain name resolution server may send an IP address of the redirected data resolution server with resolution capability to a home terminal, so that the home terminal and the redirected data resolution server are connected. According to an example of this embodiment, the redirected domain name resolution server is a zhongxing DNS server, for example, and the redirected data resolution server may be a zhongxing DNS server or a knoya DNS server.
In step S103, a response message of a server response for processing the domain name resolution request instruction is received, where the response message carries the IP address of the resource server closest to the home terminal and matched with the IP address of the home terminal by the server for processing the domain name resolution request instruction.
Optionally, in this step, a format of the response message is consistent with a format of sending the domain name resolution request instruction, when the format of the sent domain name resolution request instruction is a message in an HTTP format, the response message is also in the HTTP format, the redirected data resolution server is configured to send, receive and resolve data in the HTTP format, when the format of the sent domain name resolution request instruction is a message in an HTTPs format, the response message is also in an HTTPs format, and the redirected data resolution server is configured to send, receive, and resolve data in the HTTPs format.
The home terminal IP address carried in this step is used to establish network connection with the server that processes the domain name resolution request instruction.
When the IP address of the server that processes the domain name resolution request instruction is the IP address of the redirected domain name resolution server, the step further includes:
sending a domain name resolution request instruction to the redirected domain name resolution server, wherein the domain name resolution request instruction carries a home terminal IP address;
and receiving a response message responded by the redirected domain name resolution server, wherein the response message carries the IP address of the resource server which is matched with the redirected domain name resolution server according to the IP address of the local terminal and has the closest distance with the local terminal.
When the redirected domain name resolution server cannot process the domain name resolution request instruction, and when the IP address of the server processing the domain name resolution request instruction is the IP address of the redirected data resolution server, the step further includes:
sending a domain name resolution request instruction to the redirected data resolution server, wherein the domain name resolution request instruction carries a home terminal IP address;
and receiving a response message responded by the redirected data analysis server, wherein the response message carries the IP address of the resource server which is matched with the redirected data analysis server according to the IP address of the local terminal and has the closest distance to the local terminal.
According to an example of this embodiment, the step of matching the IP address of the resource server closest to the home terminal according to the home terminal IP address specifically includes:
the server for processing the domain name resolution request instruction matches the local IP address with IP addresses representing different areas in an IP pool;
the server for processing the domain name resolution request instruction encapsulates the successfully matched IP address into the response message;
and the server for processing the domain name resolution request instruction responds the encapsulated response message to the home terminal.
According to another example of this embodiment, the matching manner includes, but is not limited to, matching a mask of an IP address with an IP mask in an IP pool (IP pool), and matching the IP address with IP subnets in the IP pool, where when matching with one of the IP subnets is successful, a resource server represented by the subnet is a resource server closest to the local end.
And S104, accessing the resource server closest to the local terminal according to the IP address of the resource server.
According to one example of this embodiment, frequently used data is stored on a cache (cache) on the resource server for quick access by the user. The data it holds includes, but is not limited to, videos, installation packages for applications, pictures, and the like.
Fig. 3 is a flowchart of a usage scenario of a scheduling method for domain name resolution redirection according to an embodiment of the present invention, and the usage scenario of the scheduling method for domain name resolution redirection according to an embodiment of the present invention is further described below by taking as an example that communication is established over an HTTP protocol with a redirected domain name resolution server and the redirected DNS server has the capability of processing the domain name resolution request instruction, where the method includes the following steps (1) to (6).
(1) The user first initiates a DNS request to a DNS server of a Local operator, that is, a Local DNS (hereinafter, referred to as LDNS), as a DNS req message in step (1) of fig. 3.
(2) And the LDNS server sends the request to the DNS redirection subsystem (i.e. the redirected DNS server in fig. 3), the DNS redirection subsystem replies DNS ack to the LDNS, the ip address in the ack message is the ip of the DNS redirection subsystem itself, and the LDNS sends the ack to the user, as shown in step (2) in fig. 3.
(3) And the user initiates tcp handshake link establishment to the DNS redirection subsystem according to the address carried by the ack, as shown in step (3) in FIG. 3.
(4) After the DNS redirection subsystem receives the http request, the user directly establishes a link with the DNS redirection subsystem at the moment and can directly see the ip address of the user; then, the user ip is extracted and compared with its ip pool to make a decision, determine which cache subsystem is serving which ip pool, and respond to the HTTP status code 302 message, where the cache subsystem of the nearby geographic location is indicated, as shown in step (4) in fig. 3.
(5) And the user initiates a tcp connection establishing request to the cache subsystem again according to the cache subsystem ip of the nearby geographic position carried by the responded 302 message, as shown in the step (5) in fig. 3.
(6) And after receiving the request, the cache subsystem responds to the user with the resource required by the user, as shown in step (6) in FIG. 3.
Therefore, the user at the place A can be served nearby by the cache subsystem of the resource server at the place A, and the user at the place B can be served nearby by the cache subsystem of the resource server at the place B.
In the step (2) in the above-mentioned process: the DNS redirection subsystem answers the DNS ack to the LDNS, the ip address carried by the ack message is the ip of the DNS redirection subsystem, and optionally, the ip address carried in the message sent by the LDNS to the DNS ack of the user can also be the address of other servers instead of the ip of the DNS redirection subsystem. If the addresses of other servers are available, the subsequent user is connected with the server, and the server can receive the http request of the user and make a near scheduling decision according to the source ip of the user, namely, the functions of the steps (3), (4), (5) and (6) are realized.
In this embodiment, the IP address of the server that processes the domain name resolution request instruction is encapsulated in the response message and responds to the home terminal, so that the home terminal can directly establish a connection with the server that processes the domain name resolution request instruction according to the IP address, and the server that processes the domain name resolution request instruction can obtain the IP address of the home terminal instead of seeing the IP address of the DNS server of the local operator, so that the server that processes the domain name resolution request instruction can match the IP address of the resource server closest to the home terminal according to the IP address of the home terminal, and the home terminal can access the resource server closest to the home terminal, thereby improving the access speed of the resource data.
Fig. 4 is a block diagram illustrating an exemplary structure of a scheduling apparatus for domain name resolution redirection according to an embodiment of the present invention, and the following describes the scheduling apparatus for domain name resolution redirection according to an embodiment of the present invention with reference to fig. 4, as shown in fig. 4, the scheduling apparatus 10 for domain name resolution redirection includes:
a first instruction sending module 11, configured to send a domain name resolution request instruction to a first domain name resolution server;
the first message receiving module 12 is configured to receive a response message of the domain name resolution request instruction, where the response message is sent by the redirected domain name resolution server to the first domain name resolution server and carries an IP address of a server that processes the domain name resolution request instruction.
A second instruction sending module 13, configured to send a domain name resolution request instruction to the server that processes the domain name resolution request instruction when the received response message in response to the first domain name resolution server carries the IP address of the server that processes the domain name resolution request instruction, where the domain name resolution request instruction carries the local IP address;
a second message receiving module 14, configured to receive a response message in response to the server that processes the domain name resolution request instruction, where the response message carries an IP address of a resource server that is closest to the home terminal and matched by the server that processes the domain name resolution request instruction according to the home terminal IP address;
and the access module 15 is configured to access the resource server closest to the home terminal according to the IP address of the resource server.
The first instruction sending module 11 is further configured to send a domain name resolution request instruction to the first domain name resolution server, so that the first domain name resolution server sends the domain name resolution request instruction to the redirected domain name resolution server.
Most optionally, the IP address of the server that processes the domain name resolution request instruction is the IP address of the redirected domain name resolution server itself;
the second instruction sending module is further configured to send a domain name resolution request instruction to the redirected domain name resolution server, where the domain name resolution request instruction carries a home terminal IP address;
the second message receiving module is further configured to receive a response message responded by the redirected domain name resolution server, where the response message carries the IP address of the resource server closest to the home terminal, where the IP address of the redirected domain name resolution server matches the IP address of the home terminal.
Optionally, when the redirected domain name resolution server cannot process the domain name resolution request instruction, the IP address of the server that processes the domain name resolution request instruction is the IP address of the redirected data resolution server;
the second instruction sending module is further configured to send a domain name resolution request instruction to the redirected data resolution server, where the domain name resolution request instruction carries a home terminal IP address;
the second message receiving module is further configured to receive a response message responded by the redirected data resolution server, where the response message carries the IP address of the resource server closest to the home terminal, where the IP address of the resource server is matched with the home terminal IP address by the redirected data resolution server.
Optionally, the server for processing the domain name resolution request instruction specifically includes:
the IP address matching module is used for matching the local IP address with IP addresses which represent different areas in the IP pool;
the IP address encapsulation module is used for encapsulating the successfully matched IP address into the response message;
and the response message response module is used for responding the encapsulated response message to the local terminal.
Fig. 5 is a block diagram illustrating an exemplary structure of a terminal according to an embodiment of the present invention, and as shown in fig. 5, the terminal 20 includes the above-mentioned domain name resolution redirection scheduling device 10. According to one example of the embodiment, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a personal computer PC, a wearable electronic device, and other terminals with internet access functions.
According to another embodiment of the present invention, a computer device is provided, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the above-mentioned scheduling method for domain name resolution redirection when executing the program.
In this embodiment, based on the current technical situation that only the IP address of the LDNS can be seen and the IP address of the user cannot be seen when the DNS redirection subsystem receives the DNS request, the IP address of the user is introduced to perform decision scheduling, and an IP pool (IP pool) configuration of the cache service subsystem that distinguishes the geographic location resource server needs to be added. In this embodiment, after receiving the DNS request, the ip address in the response DNS ack response message is the ip address of the DNS subsystem itself, so that the user can initiate a tcp link establishment request to the DNS redirection subsystem (i.e., a server that processes the domain name resolution request instruction DNS req) after receiving the DNS ack response message, and at this time, the DNS redirection subsystem can see the ip address of the user, compare the ip address of the user with the ip pool configuration, and perform a decision according to the address field to complete the near-by scheduling of the geographic location.
It will be understood by those skilled in the art that all or part of the processes in the methods of the embodiments described above may be implemented by hardware related to instructions of a computer program, which may be stored in a computer readable storage medium, for example, in the storage medium of a computer system, and executed by at least one processor in the computer system, so as to implement the processes of the embodiments including the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for scheduling domain name resolution redirection, the method comprising:
sending a domain name resolution request instruction to a first domain name resolution server, wherein the first domain name resolution server is an operator server or other servers which cannot directly send the IP address of the user to a redirected domain name resolution server;
when a received response message responded by the first domain name resolution server carries an IP address of a server for processing the domain name resolution request instruction, sending the domain name resolution request instruction to the server for processing the domain name resolution request instruction, wherein the domain name resolution request instruction carries a local end IP address;
receiving a response message of a server response for processing the domain name resolution request instruction, wherein the response message carries the IP address of the resource server which is matched with the IP address of the local terminal and has the closest distance to the local terminal by the server for processing the domain name resolution request instruction;
and accessing the resource server closest to the local terminal according to the IP address of the resource server.
2. The method of claim 1, wherein:
the domain name resolution request instruction is used for the first domain name resolution server to send the domain name resolution request instruction to a redirected domain name resolution server;
the response message is the IP address of the server which is sent to the first domain name resolution server by the redirected domain name resolution server and carries the domain name resolution request processing instruction.
3. The method according to claim 2, wherein the IP address of the server processing the domain name resolution request instruction is the IP address of the redirected domain name resolution server itself.
4. The method according to claim 2, wherein when the redirected domain name resolution server cannot process the domain name resolution request instruction, the IP address of the server that processes the domain name resolution request instruction is the IP address of the redirected data resolution server.
5. The method according to any one of claims 1 to 4, wherein the step of the server processing the domain name resolution request instruction according to the IP address of the resource server which is matched with the local IP address and closest to the local, comprises:
the server for processing the domain name resolution request instruction matches the local IP address with IP addresses representing different areas in an IP pool;
the server for processing the domain name resolution request instruction encapsulates the successfully matched IP address into the response message;
and the server for processing the domain name resolution request instruction responds the encapsulated response message to the home terminal.
6. A device for scheduling domain name resolution redirection, the device comprising:
the first instruction sending module is used for sending a domain name resolution request instruction to a first domain name resolution server, wherein the first domain name resolution server is an operator server or other servers which cannot directly send the IP address of the user to a redirected domain name resolution server;
a second instruction sending module, configured to send a domain name resolution request instruction to a server that processes the domain name resolution request instruction when a received response message in response to the first domain name resolution server carries an IP address of the server that processes the domain name resolution request instruction, where the domain name resolution request instruction carries a home terminal IP address;
a second message receiving module, configured to receive a response message in response to the server that processes the domain name resolution request instruction, where the response message carries an IP address of a resource server closest to the home terminal, where the IP address of the resource server matches the IP address of the home terminal, and the server that processes the domain name resolution request instruction;
and the access module is used for accessing the resource server closest to the local terminal according to the IP address of the resource server.
7. The apparatus according to claim 6, wherein the domain name resolution request instruction is used for the first domain name resolution server to send the domain name resolution request instruction to a redirected domain name resolution server; the response message is the IP address of the server which is sent to the first domain name resolution server by the redirected domain name resolution server and carries the domain name resolution request processing instruction.
8. The apparatus according to claim 7, wherein the IP address of the server that processes the domain name resolution request instruction is the IP address of the redirected domain name resolution server itself.
9. The apparatus according to claim 7, wherein when the redirected domain name resolution server cannot process the domain name resolution request command, the IP address of the server that processes the domain name resolution request command is the IP address of the redirected data resolution server.
10. A terminal, characterized in that the terminal comprises the scheduling means for domain name resolution redirection of any of the preceding claims 6 to 9.
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