CN110572455A - resource access method, device, node, equipment and medium - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
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Abstract
a method of resource access, comprising: the content router receives an access request sent by a client, records a port for receiving the access request and identity information of an accessor corresponding to the access request, searches whether an access resource corresponding to the access request exists in a content cache of the content center network or not according to the access request, and sends the access request to the BigIP network if the access resource corresponding to the access request does not exist in the content cache of the content center network; the BigIP network generates a message based on a BigIP address according to the access request, multicasts the message and sends the multicast message to a resource publishing node to inquire the access resource corresponding to the access request, and forwards the access resource sent by the node to a content router; and the content router sends the access resource to the visitor corresponding to the identity information according to the port and the identity information. The present disclosure also provides a network node, a resource access device, an electronic device, and a computer-readable storage medium.
Description
Technical Field
The present disclosure relates to the field of network resource learning and BigIP technologies, and in particular, to a method, an apparatus, a node, a device, and a medium for resource access.
background
With the development of the internet, network video learning gradually becomes an indispensable part for everyone, and people can learn better learning resources through the network, so that the learning enthusiasm of people is improved. To optimize the efficiency of human learning, a new content-centric network architecture, NDN, arises in which content routing and recipient-driven communication modes can adapt to network application mode transitions. Hierarchical content naming in the NDN is beneficial to supporting aggregation of content requests, and a forwarding engine with a Pending Interest Table (PIT) and a content cache as a core can effectively utilize network resources. However, with the gradual development of the internet, the message forwarding efficiency of the NDN cannot meet the actual demand.
disclosure of Invention
Technical problem to be solved
In view of the foregoing technical problems, the present disclosure provides a method, an apparatus, a node, a device, and a medium for resource access, which are used to at least partially solve the above technical problems.
(II) technical scheme
One aspect of the present disclosure provides a resource access method for a content-centric network, including: receiving an access request sent by a client, recording a port for receiving the access request and identity information of an accessor corresponding to the access request, searching whether an access resource corresponding to the access request exists in a content cache of the content center network according to the access request, and if not, sending the access request to a BigIP network; receiving an access resource corresponding to the access request sent by the BigIP network, wherein the access resource is obtained by the BigIP network generating a message based on a BigIP address according to the access request, multicasting the message and then sending the multicast message to a resource publishing node for inquiry; and sending the access resource to an accessor corresponding to the identity information according to the port and the identity information.
optionally, the method further includes: and generating a content descriptor corresponding to the content which can be forwarded by each port of the content-centric network, and forming a content descriptor set of each port.
Optionally, the sending the access resource to the visitor corresponding to the identity information according to the port and the identity information includes: generating a corresponding content descriptor according to the content contained in the access resource; and selecting a port corresponding to the content descriptor set with the content descriptor corresponding to the access resource to transmit the access resource.
optionally, the selecting a port corresponding to a content descriptor set in which a content descriptor corresponding to the access resource exists to transmit the access resource includes: respectively extracting prefixes of all content descriptors in the content descriptor set of each port to form a prefix set corresponding to the port; extracting the prefix of the content descriptor corresponding to the access resource; and selecting a port corresponding to the prefix set and comprising the prefix of the content descriptor corresponding to the access resource to transmit the access resource.
Optionally, the method further includes: and storing the access resource to a content cache of the content center network.
Another aspect of the present disclosure provides a resource access method for a BigIP network, including: receiving an access request forwarded by a content router, wherein the content router records a port for receiving the access request and identity information of an accessor corresponding to the access request; packaging the access request into a message based on the BigIP address; multicasting the message, and sending the multicast message to a resource publishing node to inquire an access resource corresponding to the access request; and receiving the access resource, and sending the access resource to the visitor through the content router according to the port and the identity information.
Another aspect of the present disclosure provides a network node, comprising: a receiving unit, configured to receive an access request forwarded by a content router, where the content router records a port that receives the access request and identity information of an accessor corresponding to the access request; the encapsulating unit is used for encapsulating the access request into a message based on the BigIP address; the multicast unit is used for multicasting the message and sending the multicast message to a resource publishing node so as to inquire the access resource corresponding to the access request; and a forwarding unit, configured to receive the access resource, and send the access resource to the visitor through the content router according to the port and the identity information.
Another aspect of the present disclosure provides a resource access apparatus, including: the subscription module is used for sending an access request; the first routing module is used for receiving the access request sent by the subscription receiving module, recording a port for receiving the access request and identity information of an accessor corresponding to the access request, searching whether an access resource corresponding to the access request exists in a content cache or not according to the access request, and if not, forwarding the access request; a second routing module, configured to receive the access request forwarded by the first routing module, encapsulate the access request into a packet based on a BigIP address, multicast the packet, and forward the multicast packet, and a resource publishing module, configured to query an access resource corresponding to the access request according to the multicast packet, and send the access resource to the first routing module through the second routing module, so that the first routing module forwards the access resource to the subscription module according to the port and the identity information.
Another aspect of the present disclosure provides an electronic device including: one or more processors. A memory for storing one or more programs, wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method provided above.
another aspect of the present disclosure provides a computer-readable storage medium storing computer-executable instructions for implementing the method provided above when executed.
another aspect of the present disclosure provides a computer program comprising computer executable instructions for implementing the method provided above when executed.
(III) advantageous effects
The method is realized based on an NDN (named data networking) network and a BigIP (binary Internet protocol) network, wherein an access request is forwarded by using identity information and a port of a user in the NDN network part, and the access request is encapsulated into a message based on a BigIP data packet in the BigIP network part and multicast on the message, so that the forwarding efficiency of data in the access process is improved. And content descriptors are generated according to the content forwarded by the ports to form a set, and the content descriptors corresponding to the access resources are judged to realize the quick matching of the ports, so that the forwarding speed is accelerated.
Drawings
For a more complete understanding of the present disclosure and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which:
FIG. 1 schematically illustrates a flow diagram of a resource access method for a content-centric network according to an embodiment of the disclosure;
Figure 2 schematically illustrates a resource access system architecture diagram based on a content-centric network and a BigIP network according to an embodiment of the disclosure;
FIG. 3 is a flow chart of a resource access method based on the system architecture of FIG. 2 according to an embodiment of the present disclosure;
fig. 4 schematically shows a flow chart of a resource access method for a BigIP network according to an embodiment of the present disclosure;
Fig. 5 schematically shows a block diagram of a network node according to an embodiment of the present disclosure;
FIG. 6 schematically shows a block diagram of a resource access arrangement according to an embodiment of the present disclosure;
Fig. 7 schematically shows a block diagram of an electronic device according to an embodiment of the disclosure.
Detailed Description
Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is illustrative only and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.
Where a convention analogous to "at least one of A, B and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B and C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.). Where a convention analogous to "A, B or at least one of C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B or C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.).
Some block diagrams and/or flow diagrams are shown in the figures. It will be understood that some blocks of the block diagrams and/or flowchart illustrations, or combinations thereof, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing system, such that the instructions, which execute via the processor, create a system that implements the functions/acts specified in the block diagrams and/or flowchart block or blocks. The techniques of this disclosure may be implemented in hardware and/or software (including firmware, microcode, etc.). In addition, the techniques of this disclosure may take the form of a computer program product on a computer-readable storage medium having instructions stored thereon for use by or in connection with an instruction execution system.
Fig. 1 schematically shows a flow chart of a resource access method for a content-centric network according to an embodiment of the disclosure.
As shown in fig. 1, the resource access method for a content-centric network according to the embodiment of the present disclosure may include, for example, operations S101 to S103.
In operation S101, an access request sent by a client is received, a port receiving the access request and identity information of an accessor corresponding to the access request are recorded, whether an access resource corresponding to the access request exists in a content cache of a content-centric network is searched according to the access request, and if not, the access request is sent to a BigIP network.
the content-centric network is formed by a content router, which includes three data structures: a Pending Interest Table (PIT), a Subscription Table (ST) and a content Cache (CS). When a visitor sends an access request through a client to access a certain content of interest, the content router will first look up the local cache, and if it exists, directly send the access resource (e.g., video content) out of the receiving port, if it does not exist. The interested contents are written into the PIT, the port number of the visitor access request, the visitor identity information (NID) and the interested contents are written into the ST, and the access request is sent to the next content router, so that the access request is sent to the BigIP network.
In operation S102, an access resource corresponding to an access request sent by the BigIP network is received, where the access resource is obtained by the BigIP network generating a BigIP address-based message according to the access request, multicasting the message, and sending the multicast message to a resource publishing node for query.
in a BigIP network, access requests are sent based on BigIP addresses. Because the BigIP address is generated based on the identity information of the user, namely the network identity identification (NID) of the user, the NID generally has 40 bits and comprises 4-bit boundary bits, organization bits and user bits, under the condition that the user bits are not collided, the organization bits take the maximum length, and the 4-bit boundary bits can generate 16 2-system numbers with the numerical value of 0-15. And according to PIT inquiry, storing the NID of the user, and synthesizing the NID and the local 32-bit IPv4 into a corresponding BigIP address. The BigIP has 72 bits, about 4.7 × 1021 addresses, and the common IP addresses have 4.2 × 109 addresses, so the number of BigIP addresses is far greater than that of the common IPv4 addresses. I.e. there are enough addresses to enable access to the resource.
Based on the generated BigIP address, the access request may be encapsulated in a UDP packet. Due to the fact that efficient resource utilization is achieved through the multicast capability of the BigIP, when multiple access requests are processed simultaneously, messages generated by the multiple access requests can be multicast, and the multicast messages are sent to the resource publishing nodes, and therefore message forwarding efficiency can be improved.
When the publisher publishes the resource accessed by the generated message through the resource publishing node, the resource is returned to the BigIP network.
In operation S103, the access resource is sent to the visitor corresponding to the identity information according to the port and the identity information.
When receiving the access request message, the content router records the port receiving the access request and the identity information of the visitor corresponding to the access request. In order to quickly return the access resource to the visitor, after the content router receives the access resource forwarded by the BigIP network, the port and the identity information corresponding to the access request for sending the access resource are acquired by inquiring the Subscription Table (ST), and the port of the access resource is forwarded to the visitor of the identity information according to the recorded port and identity information.
To further speed up the matching and forwarding speed, the Subscription Table (ST) may employ bloom filters. That is, a content descriptor set corresponding to each port of the content-centric network content router is formed by generating a content descriptor corresponding to the content that can be forwarded by each port, and then a corresponding content descriptor is generated according to the content contained in the access resource, and the port corresponding to the content descriptor set having the content descriptor corresponding to the access resource is selected to transmit the access resource. Specifically, assuming that the content descriptors of a port subscription form a set S, it can be described by a bit array BITS [ m ] with length m. In order to support the convergence capability based on the content descriptors, when content published by a publisher reaches a certain router R, assuming that the content descriptor is/Prefix 1/Prefix2/. or./Prefix, then R is used for deciding which subscription ports to forward, R first constructs a set F {/Prefix1,/Prefix 1/Prefix 2.,/Prefix 1/Prefix2/. or.. or./Prefix }, which is formed by the content descriptor and prefixes of all the content descriptors, and if yes, forwards the published content to the port and NID corresponding to S.
In addition, in order to facilitate other visitors to access the same resource subsequently, after receiving the access resource forwarded by the BigIP network, the content router of the content-centric network stores the access resource in a content Cache (CS) of the content-centric network.
In order to describe the above resource access process more clearly, a specific example is listed below.
Fig. 2 schematically illustrates a resource access system architecture diagram based on a content-centric network and a BigIP network according to an embodiment of the disclosure. Fig. 3 schematically shows a flowchart of a resource access method based on the system architecture shown in fig. 2 according to an embodiment of the present disclosure.
The content center network is formed by connecting a plurality of content routers to form a content routing domain, the BigIP network is formed by connecting a plurality of common routers, the common routers have IPv6 routing capability, communicate based on the BigIP and provide a communication mode for crossing the content routing domain. At the edge where the content centric network connects to the BigIP network is an edge router with both content routing and IPv6 routing capabilities.
As shown in fig. 2 and fig. 3, in the edge router, R4 and R5 have both content routing and IPv6 routing capabilities, and encapsulate the access request into a UDP packet of BigIP and route the UDP packet to the aggregation node R9. The middle is a bigIP routing domain, the message is routed in a bigIP unicast and multicast mode, when R9 allocates a bigIP multicast address for the request and invites R4 and R5 to join a multicast group, a multicast tree is established in the domain, and the rightmost issuing node pub1 issues the content to the sink node R9 based on the issuing domain of the content routing. When a publisher publishes content through a resource publishing node, a visitor selects a type of accepting video content. The specific process can be as follows:
a. Visitor sub1 sends interest packages/sports to NDN router R1 when visitor sub1 subscribes to sports video sessions, visitor sub2 sends interest packages/sports/football to R2 when visitor sub2 subscribes to football video sessions in sports, and R1 and R2, which receive interest packages, forward interest packages [111,/sports ], [112,/sports/football ] to R3.
b. r3 receives the interest package sent by R1, records NID of Sub1 and port [211, 1,/sports ] of the interest package received by R3, and multicasts and forwards the interest package to R4, when the interest package [212, 4,/sports/football ] is sent by Sub, R3 only records [212, 4,/sports ], and does not forward the subscription message of R4 any more.
c. R4 receives the interest package sent by R3 and records [213, 1,/sports ].
d. When pub1 publishes/sports/football video content, the content is firstly sent to R8, then sent to the edge router node R4 through R6 by R8, and the router subscribing/sports video with NID 213 subscribing to the port of Table 1 is searched in R4, so that the content is forwarded to the R3 router with NID 213 through the port 1.
e. When R3 receives video content data, it looks up the subscription table and matches, and forwards the data content to R1 router with NID 211 through 1 port and R2 router with NID 212 through 4 port.
f. After receiving the video content data, R1 and R2 issue to Sub1 and Sub2, respectively, through the subscription table.
The method of the embodiment is realized based on an NDN (named data networking) network and a BigIP (binary Internet protocol) network, the identity information and the port of a user are used for forwarding the access request in the NDN network part, and the access request is encapsulated into a message based on a BigIP data packet in the BigIP network part and multicast on the message, so that the data forwarding efficiency in the access process is improved. And content descriptors are generated according to the content forwarded by the ports to form a set, and the content descriptors corresponding to the access resources are judged to realize the quick matching of the ports, so that the forwarding speed is accelerated.
fig. 4 schematically shows a flow chart of a resource access method for a BigIP network according to an embodiment of the disclosure.
As shown in fig. 4, the resource access method for a BigIP network according to the embodiment of the present disclosure may include, for example, operations S401 to S404.
In operation S401, an access request forwarded by a content router is received, where the content router records a port accepting the access request and identity information of an accessor corresponding to the access request.
in operation S402, the access request is encapsulated into a message based on the BigIP address.
In operation S403, multicast is performed on the packet, and the multicast packet is sent to the resource publishing node to query the access resource corresponding to the access request.
in operation S404, the access resource is received and sent to the visitor through the content router according to the port and the identity information.
it should be noted that the method of the embodiment is similar to the above-mentioned method for accessing resources of a content-centric network, and the achieved technical effects are also similar, which are not described herein again.
Fig. 5 schematically shows a block diagram of a network node according to an embodiment of the disclosure. The network node may perform the above-described method of resource access.
As shown in fig. 5, the network node 500 of the embodiment of the present disclosure may include, for example, an obtaining module receiving unit 510, an encapsulating unit 520, a multicast unit 530, and a forwarding unit 540.
A receiving unit 510, configured to receive an access request forwarded by a content router, where the content router records a port for receiving the access request and identity information of an accessor corresponding to the access request.
And an encapsulating unit 520, configured to encapsulate the access request into a message based on the BigIP address.
the multicast unit 530 is configured to multicast the packet, and send the multicast packet to the resource publishing node to query the access resource corresponding to the access request.
And the forwarding unit 540 is configured to receive the access resource, and send the access resource to the visitor through the content router according to the port and the identity information.
Fig. 6 schematically shows a block diagram of a resource access arrangement according to an embodiment of the present disclosure. The device can execute the resource access method.
As shown in fig. 6, the apparatus 600 for accessing resources according to the embodiment of the present disclosure may include, for example, a subscription module 610, a first routing module 620, a first routing module 630, and a resource publishing module 640.
the subscription module 610 is configured to send an access request, where the subscription module 610 may also be separately disposed in the client.
The first routing module 620 is configured to receive the access request sent by the subscription receiving module, record a port that receives the access request and identity information of an accessor corresponding to the access request, search whether an access resource corresponding to the access request exists in the content cache according to the access request, and forward the access request if the access resource does not exist in the content cache.
the second routing module 630 is configured to receive the access request forwarded by the first routing module, encapsulate the access request into a message based on the BigIP address, multicast the message, and forward the multicast message.
the resource publishing module 640 is configured to query, according to the multicast packet, an access resource corresponding to the access request, and send the access resource to the first routing module through the second routing module, so that the first routing module forwards the access resource to the subscribing module according to the port and the identity information.
It should be noted that, the embodiments of the network node and the apparatus portion are similar to the embodiments of the method portion, and the achieved technical effects are also similar, which are not described herein again.
Any of the modules, units, or at least part of the functionality of any of them according to embodiments of the present disclosure may be implemented in one module. Any one or more of the modules and units according to the embodiments of the present disclosure may be implemented by being split into a plurality of modules. Any one or more of the modules, units according to the embodiments of the present disclosure may be implemented at least partially as a hardware circuit, such as a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), a system on a chip, a system on a substrate, a system on a package, an Application Specific Integrated Circuit (ASIC), or may be implemented by any other reasonable means of hardware or firmware by integrating or packaging the circuits, or in any one of three implementations of software, hardware and firmware, or in any suitable combination of any of them. Alternatively, one or more of the modules, units according to embodiments of the present disclosure may be implemented at least partly as computer program modules, which, when executed, may perform the respective functions.
for example, any of the subscription module 610, the first routing module 620, the first routing module 630, and the resource publication module 640 may be combined and implemented in one module, or any one of them may be split into multiple modules. Alternatively, at least part of the functionality of one or more of these modules may be combined with at least part of the functionality of the other modules and implemented in one module. According to an embodiment of the present disclosure, at least one of the subscription modules 610 may be implemented at least partially as a hardware circuit, such as a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), a system on a chip, a system on a substrate, a system on a package, an Application Specific Integrated Circuit (ASIC), or may be implemented in hardware or firmware by any other reasonable way of integrating or packaging a circuit, or in any one of three implementations of software, hardware, and firmware, or in a suitable combination of any of them. Alternatively, at least one of the subscription modules 610 may be implemented at least in part as a computer program module, which when executed, may perform a corresponding function.
fig. 7 schematically shows a block diagram of an electronic device according to an embodiment of the disclosure. The electronic device shown in fig. 7 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.
as shown in fig. 7, electronic device 700 includes a processor 710, a computer-readable storage medium 720. The electronic device 700 may perform a method according to an embodiment of the present disclosure.
In particular, processor 710 may comprise, for example, a general purpose microprocessor, an instruction set processor and/or associated chipset, and/or a special purpose microprocessor (e.g., an Application Specific Integrated Circuit (ASIC)), and/or the like. The processor 710 may also include on-board memory for caching purposes. Processor 710 may be a single processing unit or a plurality of processing units for performing the different actions of the method flows according to embodiments of the present disclosure.
Computer-readable storage medium 720, for example, may be a non-volatile computer-readable storage medium, specific examples including, but not limited to: magnetic storage systems, such as magnetic tape or Hard Disk Drives (HDDs); optical storage systems, such as compact discs (CD-ROMs); memory such as Random Access Memory (RAM) or flash memory, etc.
the computer-readable storage medium 720 may include a computer program 721, which computer program 721 may include code/computer-executable instructions that, when executed by the processor 710, cause the processor 710 to perform a method according to an embodiment of the disclosure, or any variation thereof.
The computer program 721 may be configured with, for example, computer program code comprising computer program modules. For example, in an example embodiment, code in computer program 721 may include one or more program modules, including 721A, modules 721B, … …, for example. It should be noted that the division and number of modules are not fixed, and those skilled in the art may use suitable program modules or program module combinations according to actual situations, so that the processor 710 may execute the method according to the embodiment of the present disclosure or any variation thereof when the program modules are executed by the processor 710.
At least one of the subscription module 610, the first routing module 620, the first routing module 630, and the resource publication module 640 according to embodiments of the present disclosure may be implemented as computer program modules described with reference to fig. 7, which, when executed by the processor 710, may implement the respective operations described above.
The present disclosure also provides a computer-readable storage medium, which may be included in the device/system described in the above embodiments, or may exist separately without being assembled into the device/system. The computer-readable storage medium carries one or more programs which, when executed, implement the method according to an embodiment of the disclosure.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
It will be understood by those skilled in the art that while the present disclosure has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Accordingly, the scope of the present disclosure should not be limited to the above-described embodiments, but should be defined not only by the appended claims, but also by equivalents thereof.
the above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present disclosure in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the present disclosure and are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A resource access method for a content-centric network, comprising:
receiving an access request sent by a client, recording a port for receiving the access request and identity information of an accessor corresponding to the access request, searching whether an access resource corresponding to the access request exists in a content cache of the content center network according to the access request, and if not, sending the access request to a BigIP network;
receiving an access resource corresponding to the access request sent by the BigIP network, wherein the access resource is obtained by the BigIP network generating a message based on a BigIP address according to the access request, multicasting the message and then sending the multicast message to a resource publishing node for inquiry;
And sending the access resource to an accessor corresponding to the identity information according to the port and the identity information.
2. The method of claim 1, further comprising:
And generating a content descriptor corresponding to the content which can be forwarded by each port of the content-centric network, and forming a content descriptor set of each port.
3. The method of claim 2, wherein the sending the access resource to the visitor corresponding to the identity information according to the port and the identity information comprises:
Generating a corresponding content descriptor according to the content contained in the access resource;
And selecting a port corresponding to the content descriptor set with the content descriptor corresponding to the accessed resource to send the accessed resource.
4. The method of claim 3, wherein the selecting a port corresponding to a set of content descriptors for which there is a content descriptor corresponding to the accessed resource to transmit the accessed resource comprises:
Respectively extracting prefixes of all content descriptors in the content descriptor set of each port to form a prefix set corresponding to the port;
Extracting the prefix of the content descriptor corresponding to the access resource;
And selecting a port corresponding to the prefix set comprising the prefix of the content descriptor corresponding to the access resource to send the access resource.
5. The method of claim 1, further comprising:
Storing the accessed resource to a content cache of the content-centric network.
6. A resource access method for a BigIP network, comprising:
Receiving an access request forwarded by a content router, wherein the content router records a port for receiving the access request and identity information of an accessor corresponding to the access request;
encapsulating the access request into a message based on a BigIP address;
Multicasting the message, and sending the multicast message to a resource publishing node to inquire an access resource corresponding to the access request;
And receiving the access resource, and sending the access resource to the visitor through the content router according to the port and the identity information.
7. A network node, comprising:
A receiving unit, configured to receive an access request forwarded by a content router, where the content router records a port that receives the access request and identity information of an accessor corresponding to the access request;
The encapsulating unit is used for encapsulating the access request into a message based on the BigIP address;
The multicast unit is used for multicasting the message and sending the multicast message to a resource publishing node so as to inquire the access resource corresponding to the access request;
And the forwarding unit is used for receiving the access resource and sending the access resource to the visitor through the content router according to the port and the identity information.
8. A resource access device, comprising:
The subscription module is used for sending an access request;
the first routing module is used for receiving the access request sent by the subscription receiving module, recording the port for receiving the access request and the identity information of the visitor corresponding to the access request, searching whether an access resource corresponding to the access request exists in a content cache or not according to the access request, and if not, forwarding the access request;
A second routing module, configured to receive the access request forwarded by the first routing module, encapsulate the access request into a message based on a bigIP address, multicast the message, and forward the multicast message,
and the resource publishing module is used for inquiring the access resource corresponding to the access request according to the multicast message and sending the access resource to the first routing module through the second routing module so that the first routing module forwards the access resource to the subscribing module according to the port and the identity information.
9. An electronic device, comprising:
One or more processors;
A memory for storing one or more programs,
Wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method of any of claims 1-6.
10. A computer-readable storage medium storing computer-executable instructions for implementing the method of any one of claims 1 to 6 when executed.
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