A kind of data transmission method and relevant apparatus, server and storage mediumTechnical field
The present embodiments relate to technical field of data processing, in particular to a kind of data transmission method and relevant apparatus,Server and storage medium.
Background technique
Since being born with internet, surfing and effect of the user when using internet to website are paid attention to further,Netizen's quantity is also continuous therewith to increase sharply, and Internet service path constantly expands, in order to which the user of various regions can carry outThe access of high quality, and reduce the expense generated therefrom and portal management pressure, CDN (Content Delivery to the greatest extentNetwork, content distributing network) technology comes into being, and more and more Internet services access CDN manufacturer all to provide accelerationService.CDN is the total system disposed through tactic, and technically comprehensively solve is since network bandwidth is small, user's accessThe user that amount is big, network point distribution is uneven and generates accesses the slow-footed root problem of websites response.Its basic ideas is as far as possibleThe bottleneck and link for avoiding being possible to influencing data transmission bauds and stability on internet, make content transmission faster, it is more steadyIt is fixed.By placing one layer of intelligent virtual network that node server is formed on existing Internet basic everywhere in network,CDN system can in real time according to the connection of network flow and each node, load state and to the distance and response of user whenBetween etc. integrated informations the request of user is re-directed on the service node nearest from user.The purpose is to take user can nearbyContent needed for obtaining solves the crowded situation of Internet network, improves the response speed that user accesses website.
However, it is found by the inventors that at least there are the following problems in the prior art: CDN manufacturer delivery acceleration content whenIt waits, the content of transmission is there is the possibility being maliciously tampered, such as malicious intercepted, hacker attack etc., if distorting contentIt relates to Huang Shebao or with reaction speech, finds and handle that serious severe social influence will be caused not in time.Therefore, CDN manufacturerWhen giving user's transferring content, the acceleration content for avoiding transmission is needed to be tampered.
It should be noted that information is only used for reinforcing the reason to the background of the disclosure disclosed in above-mentioned background technology partSolution, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
Embodiment of the present invention be designed to provide a kind of data transmission method and relevant apparatus, server and storage are situated betweenMatter makes it possible to before data are transmitted so that CDN node server when carrying out data transmission, is verified to data cachedThe data cached data cached caused harm for being tampered, transmission being avoided to be tampered is found in time.
In order to solve the above technical problems, embodiments of the present invention provide a kind of data transmission method, it is applied to CDN and savesPoint server, comprising:
Obtain data transfer request, wherein include the address information and identity of demand file in data transfer request；
Cache file is determined according to address information；
Cache file is verified according to the identity of demand file, text to be transmitted is determined according to verification resultPart；Wherein, the identity of identity with demand file of file to be transmitted is identical；
File to be transmitted is transmitted to the corresponding terminal of data transfer request.
Embodiments of the present invention additionally provide a kind of data transmission device, comprising: obtain module, determining module, verifyingModule and transmission module；
It obtains module to be used for, obtains data transfer request, wherein believe the address in data transfer request including demand fileBreath and identity；
Determining module is used for, and determines cache file according to address information；
Authentication module is used for, and is verified according to the identity of demand file to cache file, true according to verification resultMake file to be transmitted；Wherein, the identity of identity with demand file of file to be transmitted is identical；
Transmission module is used for, and file to be transmitted is transmitted to the corresponding terminal of data transfer request.
Embodiments of the present invention additionally provide a kind of server, comprising: at least one processor；And
The memory being connect at least one processor communication；
Wherein, memory is stored with the instruction that can be executed by least one processor, and instruction is held by least one processorRow, so that at least one processor is able to carry out above-mentioned data transmission method.
Embodiments of the present invention additionally provide a kind of computer readable storage medium, are stored with computer program, specialSign is, above-mentioned data transmission method is realized when computer program is executed by processor.
Embodiment of the present invention includes the ground of demand file in terms of existing technologies, in the data transfer request of acquisitionLocation information and identity determine cache file according to address information, and verified according to identity to cache file, ifAny change occurs for cache file, then identity will change, by identity can determine cache file whether byIt is tampered, accordingly, it is determined that going out file to be transmitted identical with demand file identity tag, it can guarantee that CDN node server is quasi-True response data transmission request, and ensure that file to be transmitted is the file being not tampered with, prevent CDN node server to numberA possibility that according to transmission request end transmission illegal file, improve the safety of CDN node server info transmission.
In addition, verified according to the identity of demand file to file to be transmitted, according to verification result determine toFile is transmitted, specifically includes: obtaining the identity of cache file；Judge the body of identity and the demand file of cache filePart identifies whether identical；If it is different, updating cache file, the identity and demand file of updated cache file are determinedIdentity is identical, and updated cache file is determined as file to be transmitted；If they are the same, determine that cache file is text to be transmittedPart.
In the embodiment, the identity of cache file is judged, text to be transmitted is determined according to cache filePart, determines whether the cache file on CDN node server is tampered, and improves the accuracy of response data.
In addition, updating cache file, specifically include: the request of transmission update cache file to source station；Obtain source station transmissionCache file original document；Original document is cached, the file of caching is updated cache file.
In addition, the identity of identity with demand file of original document is identical.
In addition, identity is the Message Digest 5 MD5 value of demand file.
In addition, obtaining the identity of cache file, specifically include: calculating the MD5 value for obtaining file to be transmitted.
In addition, before sending the request to source station for updating file to be transmitted, data transmission method further include: delete caching textPart.
In addition, authentication module specifically includes: acquisition submodule, judging submodule update submodule and determine submodule；
Acquisition submodule is used for, and obtains the identity of cache file；Judging submodule is used for, and judges the body of cache fileWhether part mark is identical as the identity of demand file；It updates submodule to be used for, updates cache file, determine updated slowIt is identical to deposit the identity of identity with demand file of file, updated cache file is determined as file to be transmitted；It determines that submodule is used for, determines that cache file is file to be transmitted.
It is specifically used in addition, updating submodule: the request of transmission update cache file to source station；Obtain the slow of source station transmissionDeposit the original document of file；Original document is cached, the file of caching is updated cache file.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorysThe bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, removeNon- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is the flow chart of data transmission method in first embodiment of the invention；
Fig. 2 is the flow chart of data transmission method in second embodiment of the invention；
Fig. 3 is the structure chart of data transmission device in third embodiment of the invention；
Fig. 4 is the structure chart of data transmission device in four embodiment of the invention；
Fig. 5 is the structure chart of server in fifth embodiment of the invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present inventionEach embodiment be explained in detail.However, it will be understood by those skilled in the art that in each embodiment party of the present inventionIn formula, in order to make the reader understand this application better, many technical details are proposed.But even if without these technical detailsAnd various changes and modifications based on the following respective embodiments, the application technical solution claimed also may be implemented.
The first embodiment of the present invention is related to a kind of data transmission methods, are applied to CDN node server, method streamJourney is as shown in Figure 1.Including following implementation steps, it should be noted that settable multiple CDN node servers in CDN network,Embodiments of the present invention can be applied to each CDN node server in CDN network.
Step 101: obtaining data transfer request.
It wherein, include the address information and identity of demand file in data transfer request.
In specific implementation, in CDN content distribution network, data transfer request is issued by request of data end, which asksIt asks end to can be the mobile phone, tablet computer etc. that user uses, can be any electronics that can carry out data communication with CDN networkEquipment is not particularly limited herein.
One specific implementation in, by taking the application program of news category as an example, user can check at the terminal news title andAssociated summary needs to send data transfer request to CDN network, in CDN node if user wants to obtain specific news contentAfter server gets the data transfer request of terminal transmission, corresponding data content is returned to according to data transfer requestTerminal.It is only example herein, which can be applied particularly in a variety of application programs, not do specific limit hereinSystem.
It is noted that including demand file in the data transfer request that terminal is sent to CDN node serverAddress information and identity, address information indicate storage location of the demand file in CDN node server, identityFor verifying whether the particular content in CDN node server is that demand file in data transfer request is consistent.
Step 102: cache file is determined according to address information.
In specific implementation, the address information in data transfer request corresponds to the position of cache file in CDN node server；It should be noted that being stored with storage location of the demand file in CDN node server in data transfer request end.For example,In the application program of a news category, each news category title correspondence for being shown in user terminal is stored with the news and is buffered in CDNThe storage location of node server, after data transfer request is sent to CDN network by terminal, CDN network can be passed according to dataAddress information in defeated request determines the position of the cache file.
Step 103: cache file is verified according to the identity of demand file, according to verification result determine toTransmit file.
Wherein, the identity of identity with demand file of file to be transmitted is identical.
It should be noted that file identity mark is used for the content of tab file, if the content of file changes, bodyPart mark will change, thus, can determine whether file is tampered by the identity of file, determines file to be transmittedIdentity it is identical as the identity of demand file, then illustrate the content of file to be transmitted and the content one of demand fileIt causes.
In specific implementation, cache file is verified according to the identity of demand file, and is sentenced according to verification resultWhether disconnected cache file is tampered, a specific implementation are as follows: obtain the identity of cache file；Judge the identity of cache fileIt identifies whether identical as the identity of demand file；If it is different, updating cache file, the body of updated cache file is determinedPart mark is identical as the identity of demand file, and updated cache file is determined as file to be transmitted；If they are the same, it determinesCache file is file to be transmitted.
Wherein, judge whether the identity of identity and the demand file of cache file is identical, it can by comparingMethod obtains comparing result for example, the identity of the identity of cache file and demand file is compared one by one,Judge that comparing result indicates whether that the identity of identity with demand file of cache file is identical.It is only that example is said hereinIt is bright, other modes specifically also may be selected, specifically with no restrictions.
In one specific implementation, identity is the Message Digest 5 MD5 value of demand file.Then according to application documentsMD5 value verifies cache file, and the identity for obtaining cache file is embodied as, and calculates and obtains file to be transmittedMD5 value judges whether the MD5 value of cache file is identical as the MD5 value of application documents.For example, the MD5 value of application documents and cachingThe MD5 value of file judges whether cache file can be determined as file to be transmitted by making the difference method, according to the result for the method that makes the difference.It is realDuring border is implemented, it is only example herein that identity, which can also be the mark of other agreements, can also for specific judgment modeThe adjustment of adaptability is only example herein, is not specifically limited.
Wherein, different from the identity of demand file in the identity for determining cache file, need to update caching textPart, it should be noted that during updating cache file, need to delete the caching being tampered in CDN node serverFile avoids occurring during updating cache file abnormal to store the cache file of update.
Step 104: file to be transmitted is transmitted to the corresponding terminal of data transfer request.
In specific implementation, cache file is carried out verifying determining cache file being the file being not tampered with, can determine CDNCache file in node server is the demand file that terminal needs, and it is corresponding that file to be transmitted is transmitted to data transfer requestTerminal.
The first embodiment of the present invention is related to a kind of data transmission method, the implementation steps of present embodiment, by obtainingData transfer request is taken, and cache file is determined according to the address information in data transfer request, according to identity to cachingFile is verified and determines file to be transmitted, it is ensured that the content transmission being not tampered with is corresponding to data transfer request endTerminal.It should be noted that the specific implementation in present embodiment is a kind of possible implementation, or for convenienceUnderstand that a certain implementation steps illustrate the implementation steps, is not necessary embodiment, by way of example only, notTechnical solution of the present invention is constituted and is limited.
It in terms of existing technologies, include the address information and identity mark of demand file in the data transfer request of acquisitionKnow, cache file is determined according to address information, and verify to cache file according to identity, if cache file occurs to appointWhat changes, then identity will change, and can determine whether cache file is tampered with by identity, therefore, reallyFile to be transmitted identical with demand file identity tag is made, can guarantee the accurate response data transmission of CDN node serverRequest, and ensure that file to be transmitted is the file being not tampered with, prevent CDN node server and has been passed to data transfer request endA possibility that defeated illegal file, improves the safety of CDN node server info transmission.
Second embodiment of the present invention is related to a kind of data transmission method, and second embodiment is big with first embodimentIt causes identical, is in place of the main distinction, specifically illustrates the embodiment for updating cache file in this second embodiment.Its sideMethod process is as shown in Fig. 2, include following implementation steps.
It should be noted that step 201, step 202 and step 210 in present embodiment respectively with the first embodiment partyStep 101, step 202 and step 104 in formula is identical, and details are not described herein again, mainly introduces difference below:
Step 203: obtaining the identity of cache file.
In specific implementation, whether cache file is determined according to the identity of the identity of cache file and demand fileIt is modified, the type of identity of identity with demand file of cache file is identical, for example, the identity mark of demand fileKnowledge is MD5 value, then the identity of cache file is also MD5 value, which is embodied as, and calculates and obtains file to be transmittedMD5 value.In addition, identity can also be other numerical value, identity be mainly used for judging cache file whether byIt distorts, therefore, as long as identity can indicate the content of cache file, specifically without limitation.
Step 204: judging whether the identity of identity and the demand file of cache file is identical, if it is, holdingOtherwise row step 205 executes step 206 to step 209.
Step 205: determining that cache file is file to be transmitted, turn to go to execute step 210.
In specific implementation, the identity of identity with demand file of cache file is identical, then illustrates cache fileIt is not tampered with, which can be transmitted to the corresponding terminal of data transfer request.
Step 206: the request of transmission update cache file to source station.
Step 207: obtaining the original document of the cache file of source station transmission.
Step 208: original document being cached, the file of caching is updated cache file.
Step 209: determining that the identity of identity with demand file of updated cache file is identical, will updateCache file afterwards is determined as file to be transmitted, continues to execute step 210.
It in specific implementation, determines that the identity of cache file is tampered, then needs to be updated according to the original document of source stationCache file.It should be noted that the cache file of source station is stored in CDN node server after CDN network is established,The identity of demand file in terminal and the identity of original document are identical, thus, pass through source when updating cache fileOriginal document in standing is updated cache file, it is ensured that the body of identity and the demand file of updated cache filePart mark is identical.
In specific implementation, if the identity of demand file is MD5 value, the MD5 of the original document of source station response is extractedValue, compares, the MD5 value for determining original document is identical as the MD5 value of demand file, then updates with the MD5 value of demand fileCache file it is identical as the MD5 value of demand file, updated cache file is determined as file to be transmitted.
It should be noted that the above specific embodiment is by way of example only, technical solution of the present invention is not constitutedIt limits.
The step of various methods divide above, be intended merely to describe it is clear, when realization can be merged into a step orCertain steps are split, multiple steps are decomposed into, as long as including identical logical relation, all in the protection scope of this patentIt is interior；To adding inessential modification in algorithm or in process or introducing inessential design, but its algorithm is not changedCore design with process is all in the protection scope of the patent.
Third embodiment of the invention is related to a kind of data transmission device, as shown in Figure 3, comprising: obtain module 301, reallyCover half block 302, authentication module 302 and transmission module 304.
It obtains module 301 to be used for, obtains data transfer request, wherein include the ground of demand file in data transfer requestLocation information and identity.
Determining module 302 is used for, and determines cache file according to address information.
Authentication module 303 is used for, and is verified according to the identity of demand file to cache file, according to verification resultDetermine file to be transmitted；Wherein, the identity of identity with demand file of file to be transmitted is identical.
Transmission module 304 is used for, and file to be transmitted is transmitted to the corresponding terminal of data transfer request.
It is not difficult to find that present embodiment is system embodiment corresponding with first embodiment, present embodiment can be withFirst embodiment is worked in coordination implementation.The relevant technical details mentioned in first embodiment still have in the present embodimentEffect, in order to reduce repetition, which is not described herein again.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable inIn first embodiment.
It is noted that each module involved in present embodiment is logic module, and in practical applications, oneA logic unit can be a physical unit, be also possible to a part of a physical unit, can also be with multiple physics listsThe combination of member is realized.In addition, in order to protrude innovative part of the invention, it will not be with solution institute of the present invention in present embodimentThe technical issues of proposition, the less close unit of relationship introduced, but this does not indicate that there is no other single in present embodimentMember.
Four embodiment of the invention is related to a kind of data transmission device.4th embodiment and third embodiment are substantiallyIt is identical, in four embodiment of the invention, the concrete function of authentication module is specifically illustrated, structure is as shown in figure 4, packetInclude: acquisition submodule 3031, judging submodule 3032 update submodule 3033 and determine submodule 3034.
Acquisition submodule 3031 is used for, and obtains the identity of cache file.
Judging submodule 3032 is used for, judge identity with the demand file of cache file identity whether phaseTogether.
It updates submodule 3033 to be used for, updates cache file, determine the identity and request of updated cache fileThe identity of file is identical, and updated cache file is determined as file to be transmitted.
It determines that submodule 3034 is used for, determines that cache file is file to be transmitted.
It in one specific implementation, updates submodule 3033 and is specifically used for, send the request for updating cache file to source station；It obtainsThe original document for the cache file for taking source station to transmit；Original document is cached, the file of caching is updated caching textPart.
Since second embodiment is corresponded to each other with present embodiment, present embodiment can be mutual with second embodimentMatch implementation.The relevant technical details mentioned in second embodiment are still effective in the present embodiment, implement secondThe attainable technical effect of institute similarly may be implemented in the present embodiment in mode, no longer superfluous here in order to reduce repetitionIt states.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in second embodiment.
Fifth embodiment of the invention is related to a kind of server, including at least one processor 501；And at least oneThe memory 502 that a processor 501 communicates to connect, wherein memory 502, which is stored with, to be executed by least one processor 501Instruction, instruction executed by least one processor 501 so that at least one processor 501 is able to carry out data transmission method.
In present embodiment, for processor 501 is with central processing unit (Central Processing Unit, CPU),For memory 502 is with readable and writable memory (Random Access Memory, RAM).Processor 501, memory 502 can be withIt is connected by bus or other modes, in Fig. 5 for being connected by bus.Memory 502 is used as a kind of non-volatile meterCalculation machine readable storage medium storing program for executing can be used for storing non-volatile software program, non-volatile computer executable program and module,As realized in the application embodiment, the program of data transmission method is stored in memory 502.Processor 501 passes through operationNon-volatile software program, instruction and the module being stored in memory 502, thereby executing equipment various function application withAnd data processing, that is, realize above-mentioned data transmission method.
Memory 502 may include storing program area and storage data area, wherein storing program area can store operation systemApplication program required for system, at least one function；It storage data area can the Save option list etc..In addition, memory can wrapHigh-speed random access memory is included, can also include nonvolatile memory, for example, at least disk memory, a flash memoriesPart or other non-volatile solid state memory parts.In some embodiments, it includes relative to processor that memory 502 is optional501 remotely located memories, these remote memories can pass through network connection to external equipment.The example packet of above-mentioned networkInclude but be not limited to internet, intranet, local area network, mobile radio communication and combinations thereof.
One or more program module is stored in memory 502, is executed when by one or more processor 501When, execute the data transmission method in above-mentioned first or second method implementation.
Data transmission method provided by the application embodiment can be performed in the said goods, has the corresponding function of execution methodCan module and beneficial effect, the not technical detail of detailed description in the present embodiment, reference can be made to the application embodiment is mentionedThe data transmission method of confession.
Sixth embodiment of the invention is related to a kind of computer readable storage medium, is stored with computer program.ComputerThe data transmission method in above-mentioned first or second embodiment is realized when program is executed by processor.
That is, it will be understood by those skilled in the art that implement the method for the above embodiments be can be withRelevant hardware is instructed to complete by program, which is stored in a storage medium, including some instructions are to makeIt obtains an equipment (can be single-chip microcontroller, chip etc.) or processor (processor) executes side described in each embodiment of the applicationThe all or part of the steps of method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journeyThe medium of sequence code.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.