CN105610995A - Selection method of DNS server, selection device of the DNS server and terminal - Google Patents
Selection method of DNS server, selection device of the DNS server and terminal Download PDFInfo
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- CN105610995A CN105610995A CN201510579669.5A CN201510579669A CN105610995A CN 105610995 A CN105610995 A CN 105610995A CN 201510579669 A CN201510579669 A CN 201510579669A CN 105610995 A CN105610995 A CN 105610995A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
Abstract
The invention provides a selection method of a DNS server, a selection device of the DNS server and a terminal. The selection method of the DNS server comprises the following steps of sending a domain name analysis request to the plurality of DNS servers; acquiring current response time of the plurality of DNS servers to the domain name analysis request, and combining historical response time of the plurality of DNS servers to calculate response-time weighted values of the plurality of DNS servers; according to the response-time weighted values, selecting a target DNS server in the plurality of DNS servers. Through the technical scheme of the invention, accuracy and reliability of target DNS server selection in the plurality of DNS servers are increased so that response time of the DNS servers is effectively reduced.
Description
Technical field
The present invention relates to terminal technology field, in particular to a kind of selection of dns serverThe selecting arrangement of method, a kind of dns server and a kind of terminal.
Background technology
At present, in the prior art, to the individual DNS to be selected of definite N (N >=2)(DomainNameSystem, domain name analysis system) server sends respectively DNS name resolutionRequest, and the corresponding IP of record access (InternetProtocol, interconnected agreement between network) addressResponse time, in N dns server to be selected, determine according to the response time of IP addressTarget dns server.
But, when only N definite dns address being conducted interviews, due to the dns address of terminalBeing distributed voluntarily by network, is not what determine, and this scheme is only by once access is just definiteDns server performance, there is larger contingency, make to determine very accurately targetDns server, does not consider that the network configuration of diverse geographic location is to determining target in addition yetThe impact that dns server produces, therefore true in multiple dns servers by technique schemeFixed target dns server is not very accurate.
Therefore, how improving the accuracy of select target dns server and reliability becomes urgently and separatesProblem certainly.
Summary of the invention
The present invention, just based on the problems referred to above, has proposed a kind of new technical scheme, has improved multipleThe accuracy of select target dns server and reliability in dns server, thus effectively reduceThe response time of dns server.
In view of this, a first aspect of the present invention has proposed a kind of system of selection of dns server,Comprise: send domain name mapping request to multiple dns servers; Obtain described multiple dns serverTo the current response time of domain name analysis request, and going through in conjunction with described multiple dns serversThe history response time is calculated the response time weighted value of described multiple dns servers; According to described responseTime weight value is select target dns server in described multiple dns servers.
In this technical scheme, because the performance difference of different dns servers causes domain name solutionThe response time of analysing request is different, therefore, and can be by obtaining multiple dns servers to territoryThe current response time of name analysis request, and in conjunction with the historical responses time meter of multiple dns serversCalculate the response time weighted value of multiple dns servers, thus according to response time weighted value multipleSelect target dns server in dns server, i.e. shorter dns server of response time,In prior art, only more can determine response ratio faster exactly by obtaining a response timeDns server, has improved accuracy and the reliability of definite target dns server, thereby effectivelyGround has reduced the response time of target dns server, and then has improved user's experience.
In technique scheme, preferably, determine described current according to the type of accessing terminal to networkThe weighted value of response time, and the described historical responses time of obtaining described multiple dns serversWith corresponding weighted value; According to the weighted value of described current response time, described current response time,The weighted value of described historical responses time and described historical responses time, calculates described response time weightingValue.
In this technical scheme, due to terminal access different network types (for example, 2G network:Digital network, 3G network: High Speed IP data network, 4G network: all-IP data network) rightThere is certain influence the response time of dns server, therefore, and can be according to the class of accessing terminal to networkType is determined the weighted value of the current response time of multiple dns servers, to serve in conjunction with multiple DNSThe historical responses time of device and corresponding weighted value calculate the response time of multiple dns serversWeighted value, so, can calculate the response weighted value of multiple dns servers more exactly, fromAnd make in multiple dns servers select target dns server more accurately, reliable.
In above-mentioned arbitrary technical scheme, preferably, judge every in described multiple dns serverWhether the access times of individual dns server are less than preset times; When in described multiple dns serversThe access times of at least one dns server while being less than described preset times, by described at least oneThe minimum dns server of access times in individual dns server is as target dns server;When the access times of the described each dns server in described multiple dns servers be all greater than or etc.In the time of described preset times, carry out the described step that sends domain name mapping request to multiple dns serversSuddenly.
In this technical scheme, before sending domain name mapping request to multiple dns servers, logicalCross and judge whether the access times of the each dns server in multiple dns servers are less than default timeNumber, when the access times of at least one dns server in multiple dns servers are less than defaultWhen number of times, also just the terminal of at least one dns server of explanation access is fewer, by least oneThe dns server of the access times minimum in individual dns server is as target dns server,Can effectively avoid access amount to cause very long feelings of response time compared with large dns serverCondition, guaranteed the quick response of dns server, on the other hand, and when in multiple dns serversWhen the access times of each dns server are all more than or equal to preset times, can be according to responseTime weight value is select target dns server in multiple dns servers, has ensured furtherThe accuracy of select target dns server, reliability in multiple dns servers.
In above-mentioned arbitrary technical scheme, preferably, obtain the current geographic position at terminal place, andDetermine described multiple dns server according to described current geographic position.
In this technical scheme, because the network configuration of the dns server of diverse geographic location also canResponse time during to terminal access dns server exerts an influence, therefore, and can be by obtaining endThe current geographic position at end place, and determine multiple dns servers according to current geographic position, enterThe accuracy of multiple dns servers has been guaranteed to select in one step ground.
In above-mentioned arbitrary technical scheme, preferably, described in obtain described multiple dns server pairThe step of the current response time of domain name analysis request, specifically comprises: if receive from describedThe domain name mapping response of the arbitrary dns server in multiple dns servers, by described arbitrary DNSThe response time of server is as the described current response time of described arbitrary dns server; If notReceive the domain name mapping response from the arbitrary dns server in described multiple dns servers,The described current response time using the default response time as described arbitrary dns server.
In this technical scheme, when receiving from the arbitrary DNS service in multiple dns serversWhen the domain name mapping of device responds, can be directly using the response time of arbitrary dns server as appointingThe current response time of one dns server, otherwise, can will preset the response time as arbitraryThe current response time of dns server, add so that calculate the response time of multiple dns serversWeights. And, using the dns server that does not receive domain name mapping response not as next this terminalThe dns server of select target dns server, that is to say and will not receive domain name mapping responseDns server get rid of outside multiple dns servers.
A second aspect of the present invention has proposed a kind of selecting arrangement of dns server, comprising: sendUnit, for sending domain name mapping request to multiple dns servers; Computing unit, for obtainingThe current response time of described multiple dns server to domain name analysis request, and described in combinationDescribed in the historical responses Time Calculation of multiple dns servers, the response time of multiple dns servers addsWeights; Selected cell, for according to described response time weighted value at described multiple dns serversMiddle select target dns server.
In this technical scheme, because the performance difference of different dns servers causes domain name solutionThe response time of analysing request is different, therefore, and can be by obtaining multiple dns servers to territoryThe current response time of name analysis request, and in conjunction with the historical responses time meter of multiple dns serversCalculate the response time weighted value of multiple dns servers, thus according to response time weighted value multipleSelect target dns server in dns server, i.e. shorter dns server of response time,In prior art, only more can determine response ratio faster exactly by obtaining a response timeDns server, has improved accuracy and the reliability of definite target dns server, thereby effectivelyGround has reduced the response time of target dns server, and then has improved user's experience.
In technique scheme, preferably, described computing unit comprises: acquiring unit, and for rootDetermine the weighted value of described current response time according to the type of accessing terminal to network, and obtain described manyDescribed historical responses time and the corresponding weighted value of individual dns server; Described computing unit is concreteBe used for, according to the weighted value of described current response time, described current response time, described historical soundBetween seasonable and the weighted value of described historical responses time, calculate described response time weighted value.
In this technical scheme, due to terminal access different network types (for example, 2G network:Digital network, 3G network: High Speed IP data network, 4G network: all-IP data network) rightThere is certain influence the response time of dns server, therefore, and can be according to the class of accessing terminal to networkType is determined the weighted value of the current response time of multiple dns servers, to serve in conjunction with multiple DNSThe historical responses time of device and corresponding weighted value calculate the response time of multiple dns serversWeighted value, so, can calculate the response weighted value of multiple dns servers more exactly, fromAnd make in multiple dns servers select target dns server more accurately, reliable.
In above-mentioned arbitrary technical scheme, preferably, also comprise: judging unit, described in judgingWhether the access times of the each dns server in multiple dns servers are less than preset times; TheOne determining unit, for the visit of at least one dns server when described multiple dns serversAsk when number of times is less than described preset times, by the access times in described at least one dns serverMinimum dns server is as target dns server; Described transmitting element specifically for, work as instituteThe access times of stating the described each dns server in multiple dns servers are all more than or equal to instituteWhile stating preset times, carry out the described step that sends domain name mapping request to multiple dns servers.
In this technical scheme, before sending domain name mapping request to multiple dns servers, logicalCross and judge whether the access times of the each dns server in multiple dns servers are less than default timeNumber, when the access times of at least one dns server in multiple dns servers are less than defaultWhen number of times, also just the terminal of at least one dns server of explanation access is fewer, by least oneThe dns server of the access times minimum in individual dns server is as target dns server,Can effectively avoid access amount to cause very long feelings of response time compared with large dns serverCondition, guaranteed the quick response of dns server, on the other hand, and when in multiple dns serversWhen the access times of each dns server are all more than or equal to preset times, can be according to responseTime weight value is select target dns server in multiple dns servers, has ensured furtherThe accuracy of select target dns server, reliability in multiple dns servers.
In above-mentioned arbitrary technical scheme, preferably, also comprise: the second determining unit, for obtainingThe current geographic position at terminal place, and determine described multiple DNS according to described current geographic positionServer.
In this technical scheme, because the network configuration of the dns server of diverse geographic location also canResponse time during to terminal access dns server exerts an influence, therefore, and can be by obtaining endThe current geographic position at end place, and determine multiple dns servers according to current geographic position, enterThe accuracy of multiple dns servers has been guaranteed to select in one step ground.
In above-mentioned arbitrary technical scheme, preferably, described computing unit comprises: the 3rd determining unit,If for receiving the domain name mapping from arbitrary dns server of described multiple dns serversResponse, the institute using the response time of described arbitrary dns server as described arbitrary dns serverState the current response time; If do not receive from the arbitrary DNS clothes in described multiple dns serversThe domain name mapping response of business device, using the default response time as described in described arbitrary dns serverThe current response time.
In this technical scheme, when receiving from the arbitrary DNS service in multiple dns serversWhen the domain name mapping of device responds, can be directly using the response time of arbitrary dns server as appointingThe current response time of one dns server, otherwise, can will preset the response time as arbitraryThe current response time of dns server, add so that calculate the response time of multiple dns serversWeights. And, using the dns server that does not receive domain name mapping response not as next this terminalThe dns server of select target dns server, that is to say and will not receive domain name mapping responseDns server get rid of outside multiple dns servers.
A third aspect of the present invention has proposed a kind of terminal, comprising: any one institute in technique schemeThe selecting arrangement of the dns server of stating, therefore, this terminal have with technique scheme in arbitraryThe identical technique effect of selecting arrangement of the dns server described in, does not repeat them here.
By technical scheme of the present invention, improve select target DNS in multiple dns serversThe accuracy of server and reliability, thereby the response time of effectively having reduced dns server.
Brief description of the drawings
Fig. 1 shows the stream of the system of selection of dns server according to an embodiment of the inventionJourney schematic diagram;
Fig. 2 shows the system of selection of dns server according to another embodiment of the inventionSchematic flow sheet;
Fig. 3 shows the knot of the selecting arrangement of dns server according to an embodiment of the inventionStructure schematic diagram;
Fig. 4 shows the structural representation of terminal according to an embodiment of the invention;
Fig. 5 shows the selecting arrangement of dns server according to another embodiment of the inventionStructural representation;
Fig. 6 shows showing of dns server according to an embodiment of the invention and terminal interactionIntention.
Detailed description of the invention
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with attachedFigure and detailed description of the invention are further described in detail the present invention. It should be noted that, notIn the situation of conflict, the feature in the application's embodiment and embodiment can combine mutually.
Set forth in the following description a lot of details so that fully understand the present invention, still,The present invention can also adopt other to be different from other modes described here and implement, therefore, and the present inventionProtection domain be not subject to the restriction of following public specific embodiment.
Fig. 1 shows the stream of the system of selection of dns server according to an embodiment of the inventionJourney schematic diagram.
As shown in Figure 1, the system of selection of dns server according to an embodiment of the invention,Comprise:
Step 102, sends domain name mapping request to multiple dns servers;
Step 104, obtains the current sound of described multiple dns server to domain name analysis requestBetween seasonable, and in conjunction with multiple DNS described in the historical responses Time Calculation of described multiple dns serversThe response time weighted value of server;
Step 106, selects in described multiple dns servers according to described response time weighted valueTarget dns server.
In this technical scheme, because the performance difference of different dns servers causes domain name solutionThe response time of analysing request is different, therefore, and can be by obtaining multiple dns servers to territoryThe current response time of name analysis request, and in conjunction with the historical responses time meter of multiple dns serversCalculate the response time weighted value of multiple dns servers, thus according to response time weighted value multipleSelect target dns server in dns server, i.e. shorter dns server of response time,In prior art, only more can determine response ratio faster exactly by obtaining a response timeDns server, has improved accuracy and the reliability of definite target dns server, thereby effectivelyGround has reduced the response time of target dns server, and then has improved user's experience.
In technique scheme, preferably, determine described current according to the type of accessing terminal to networkThe weighted value of response time, and the described historical responses time of obtaining described multiple dns serversWith corresponding weighted value; According to the weighted value of described current response time, described current response time,The weighted value of described historical responses time and described historical responses time, calculates described response time weightingValue.
In this technical scheme, due to terminal access different network types (for example, 2G network:Digital network, 3G network: High Speed IP data network, 4G network: all-IP data network) rightThere is certain influence the response time of dns server, therefore, and can be according to the class of accessing terminal to networkType is determined the weighted value of the current response time of multiple dns servers, to serve in conjunction with multiple DNSThe historical responses time of device and corresponding weighted value calculate the response time of multiple dns serversWeighted value, so, can calculate the response weighted value of multiple dns servers more exactly, fromAnd make in multiple dns servers select target dns server more accurately, reliable.
In above-mentioned arbitrary technical scheme, preferably, judge every in described multiple dns serverWhether the access times of individual dns server are less than preset times; When in described multiple dns serversThe access times of at least one dns server while being less than described preset times, by described at least oneThe minimum dns server of access times in individual dns server is as target dns server;When the access times of the described each dns server in described multiple dns servers be all greater than or etc.In the time of described preset times, carry out the described step that sends domain name mapping request to multiple dns serversSuddenly.
In this technical scheme, before sending domain name mapping request to multiple dns servers, logicalCross and judge whether the access times of the each dns server in multiple dns servers are less than default timeNumber, when the access times of at least one dns server in multiple dns servers are less than defaultWhen number of times, also just the terminal of at least one dns server of explanation access is fewer, by least oneThe dns server of the access times minimum in individual dns server is as target dns server,Can effectively avoid access amount to cause very long feelings of response time compared with large dns serverCondition, guaranteed the quick response of dns server, on the other hand, and when in multiple dns serversWhen the access times of each dns server are all more than or equal to preset times, can be according to responseTime weight value is select target dns server in multiple dns servers, has ensured furtherThe accuracy of select target dns server, reliability in multiple dns servers.
In above-mentioned arbitrary technical scheme, preferably, obtain the current geographic position at described terminal place,And determine described multiple dns server according to described current geographic position.
In this technical scheme, because the network configuration of the dns server of diverse geographic location also canResponse time during to terminal access dns server exerts an influence, therefore, and can be by obtaining endThe current geographic position at end place, and determine multiple dns servers according to current geographic position, enterThe accuracy of multiple dns servers has been guaranteed to select in one step ground.
In above-mentioned arbitrary technical scheme, preferably, described in obtain described multiple dns server pairThe step of the current response time of domain name analysis request, specifically comprises: if receive from describedThe domain name mapping response of the arbitrary dns server in multiple dns servers, by described arbitrary DNSThe response time of server is as the described current response time of described arbitrary dns server; If notReceive the domain name mapping response from the arbitrary dns server in described multiple dns servers,The described current response time using the default response time as described arbitrary dns server.
In this technical scheme, when receiving from the arbitrary DNS service in multiple dns serversWhen the domain name mapping of device responds, can be directly using the response time of arbitrary dns server as appointingThe current response time of one dns server, otherwise, can will preset the response time as arbitraryThe current response time of dns server, add so that calculate the response time of multiple dns serversWeights. And, using the dns server that does not receive domain name mapping response not as next this terminalThe dns server of select target dns server, that is to say and will not receive domain name mapping responseDns server get rid of outside multiple dns servers.
Fig. 2 shows the system of selection of dns server according to another embodiment of the inventionSchematic flow sheet.
As shown in Figure 2, the system of selection of dns server according to another embodiment of the invention,Comprise:
Step 202, in the time of terminal access webpage, obtains IP address corresponding to webpage domain name.
Whether step 204, store the IP address corresponding with webpage domain name in the buffer area of sense terminals,If so, enter step 208, otherwise enter step 206.
Step 206, if do not store the IP address corresponding with webpage domain name in the buffer area of terminal, obtainsGet the current geographic position at terminal place, and determine multiple dns servers according to current geographic position.
Step 208, if store the IP address corresponding with webpage domain name, directly in the buffer area of terminalAccording to corresponding IP address access dns server.
Step 210, judges that the access times of the arbitrary dns server in multiple dns servers areThe no preset times that is less than, when being, enters step 212 in judged result, otherwise, enter step214。
Step 212, by the dns server minimum access times at least one dns serverAs target dns server.
Step 214, if do not exist access times to be less than preset times in multiple dns serversDns server, sends domain name mapping request to multiple dns servers.
Step 216, determines the weighted value of current response time according to the type of accessing terminal to network, withAnd obtain the historical responses time of multiple dns servers and corresponding weighted value.
Step 218, during according to the weighted value of current response time, current response time, historical responsesBetween and the corresponding weighted value of historical responses time, the response time of calculating multiple dns servers addsWeights.
Step 220, according to response time weighted value select target DNS in multiple dns serversServer.
Describe the response time weighted value of the multiple dns servers of calculating of the present invention below in detail:
In this embodiment, the type of accessing terminal to network is 2G network, and terminal takes to multiple DNSBusiness device sends domain name mapping request, and arbitrary dns server in multiple dns server to this eventuallyThe current response time of the domain name mapping request that end sends is t1，n, in addition, arbitrary dns server pairThe historical responses time of the terminal of access 2G network is t1,1、t1,2…t1,n-1, arbitrary dns serverThe historical responses time of the terminal to access 3G network is t2,1、t2,2…t2,m, arbitrary DNS serviceThe historical responses time of the terminal of device to access 4G network is t3,1、t3,2…t3,p, 2G network, 3GThe weighted value of network, 4G network is respectively α1、α2And α3，0<α1<α2<α3< 1, use withLower formula calculates the response time weighted value of arbitrary dns server Wherein, trespRepresentThe response time weighted value of arbitrary dns server, t1,nRepresent that under 2G network, the n time access is arbitraryThe response time (being the current response time) of dns server, t2，mRepresent the m time access under 3GThe response time of arbitrary dns server, t3,pRepresent the p time arbitrary dns server of access under 4GResponse time.
In terminal after multiple dns servers send domain name mapping requests, if other-end passes through2G network sends domain name mapping request to arbitrary dns server, and arbitrary dns server is to otherThe current response time of the domain name mapping request of terminal is t1,n+1, also can use following formula pairThe response time weighted value of arbitrary dns server is upgraded, tresp1Represent the response time weighted value of the arbitrary dns server after upgrading.
Fig. 3 shows the knot of the selecting arrangement of dns server according to an embodiment of the inventionStructure schematic diagram.
As shown in Figure 3, the selecting arrangement of dns server according to an embodiment of the invention300, comprising: transmitting element 302, computing unit 304, selected cell 306, wherein, describedSend unit 302 for sending domain name mapping request to multiple dns servers; Computing unit 304,For obtaining the current response time of described multiple dns server to domain name analysis request, andIn conjunction with the sound of multiple dns servers described in the historical responses Time Calculation of described multiple dns serversWeighted value between seasonable; Selected cell 306, for according to described response time weighted value described multipleSelect target dns server in dns server.
In this technical scheme, because the performance difference of different dns servers causes domain name solutionThe response time of analysing request is different, therefore, and can be by obtaining multiple dns servers to territoryThe current response time of name analysis request, and in conjunction with the historical responses time meter of multiple dns serversCalculate the response time weighted value of multiple dns servers, thus according to response time weighted value multipleSelect target dns server in dns server, i.e. shorter dns server of response time,In prior art, only more can determine response ratio faster exactly by obtaining a response timeDns server, has improved accuracy and the reliability of definite target dns server, thereby effectivelyGround has reduced the response time of target dns server, and then has improved user's experience.
In above-mentioned arbitrary technical scheme, preferably, described computing unit 304 comprises: acquiring unit3042, determine the power of described current response time for access the type of described network according to described terminalHeavily be worth, and obtain described historical responses time and the corresponding weight of described multiple dns serversValue; Described computing unit 304 specifically for, according to described current response time, described current responseThe weighted value of the weighted value of time, described historical responses time and described historical responses time, calculates instituteState response time weighted value.
In this technical scheme, due to terminal access different network types (for example, 2G network:Digital network, 3G network: High Speed IP data network, 4G network: all-IP data network) rightThere is certain influence the response time of dns server, therefore, and can be according to the class of accessing terminal to networkType is determined the weighted value of the current response time of multiple dns servers, to serve in conjunction with multiple DNSThe historical responses time of device and corresponding weighted value calculate the response time of multiple dns serversWeighted value, so, can calculate the response weighted value of multiple dns servers more exactly, fromAnd make in multiple dns servers select target dns server more accurately, reliable.
In above-mentioned arbitrary technical scheme, preferably, also comprise: judging unit 308, for judgementWhether the access times of the each dns server in described multiple dns server are less than preset times;The first determining unit 310, at least one the DNS service when described multiple dns serversWhen the access times of device are less than described preset times, by the visit in described at least one dns serverAsk that the dns server of least number of times is as target dns server; Described transmitting element 302 is concreteBe used for, when the access times of the described each dns server in described multiple dns servers all largeIn or while equaling described preset times, carry out described send domain name mappings to multiple dns servers pleaseThe step of asking.
In this technical scheme, before sending domain name mapping request to multiple dns servers, logicalCross and judge whether the access times of the each dns server in multiple dns servers are less than default timeNumber, when the access times of at least one dns server in multiple dns servers are less than defaultWhen number of times, also just the terminal of at least one dns server of explanation access is fewer, by least oneThe dns server of the access times minimum in individual dns server is as target dns server,Can effectively avoid access amount to cause very long feelings of response time compared with large dns serverCondition, guaranteed the quick response of dns server, on the other hand, and when in multiple dns serversWhen the access times of each dns server are all more than or equal to preset times, can be according to responseTime weight value is select target dns server in multiple dns servers, has ensured furtherThe accuracy of select target dns server, reliability in multiple dns servers.
In above-mentioned arbitrary technical scheme, preferably, also comprise: the second determining unit 312, forObtain the current geographic position at described terminal place, and determine described many according to described current geographic positionIndividual dns server.
In this technical scheme, because the network configuration of the dns server of diverse geographic location also canResponse time during to terminal access dns server exerts an influence, therefore, and can be by obtaining endThe current geographic position at end place, and determine multiple dns servers according to current geographic position, enterThe accuracy of multiple dns servers has been guaranteed to select in one step ground.
In above-mentioned arbitrary technical scheme, preferably, described computing unit 304 comprises: the 3rd determinesUnit 3044, if for receiving the arbitrary dns server from described multiple dns serversDomain name mapping response, using the response time of described arbitrary dns server as described arbitrary DNSThe described current response time of server; If do not receive from described multiple dns serversThe domain name mapping response of arbitrary dns server, will preset the response time as described arbitrary DNS clothesThe described current response time of business device.
In this technical scheme, when receiving from the arbitrary DNS service in multiple dns serversWhen the domain name mapping of device responds, can be directly using the response time of arbitrary dns server as appointingThe current response time of one dns server, otherwise, can will preset the response time as arbitraryThe current response time of dns server, add so that calculate the response time of multiple dns serversWeights. And, using the dns server that does not receive domain name mapping response not as next this terminalThe dns server of select target dns server, that is to say and will not receive domain name mapping responseDns server get rid of outside multiple dns servers.
Fig. 4 shows the structural representation of terminal according to an embodiment of the invention.
As shown in Figure 4, terminal 400 according to an embodiment of the invention, comprising: above-mentioned technologyThe selecting arrangement 300 of the dns server in scheme described in any one, therefore, these terminal 400 toolsHave with technique scheme in the identical skill of selecting arrangement 300 of dns server described in any oneArt effect, does not repeat them here.
Fig. 5 shows the selecting arrangement of dns server according to another embodiment of the inventionStructural representation; Fig. 6 shows dns server according to an embodiment of the invention and terminalMutual schematic diagram.
Describe technical scheme of the present invention in detail below in conjunction with Fig. 5 and Fig. 6:
As shown in Figure 5, the selecting arrangement of dns server according to another embodiment of the invention500, comprising: location-based service module 502, for obtaining the current geographic position at terminal place, withDetermine multiple dns servers to be selected according to current geographic position; Parsing module 504 for toMultiple dns servers to be selected send domain name mapping request, receive the territory from dns serverName analysis response (as shown in Figure 6), and obtain multiple dns servers to domain name mapping requestThe current response time; Computing module 506 is for according to current response time and multiple dns serverThe response time weighted value of the multiple dns servers of historical responses Time Calculation, when according to responseBetween weighted value select target dns server in multiple dns servers.
More than be described with reference to the accompanying drawings technical scheme of the present invention, improved and obtained target DNSThe accuracy of server and reliability, thereby the response time of effectively having reduced dns server.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, forThose skilled in the art, the present invention can have various modifications and variations. All in essence of the present inventionWithin god and principle, any amendment of doing, be equal to replacement, improvement etc., all should be included in the present inventionProtection domain within.
Claims (11)
1. a system of selection for dns server, is characterized in that, comprising:
Send domain name mapping request to multiple dns servers;
Obtain the current response time of described multiple dns server to domain name analysis request, andIn conjunction with the sound of multiple dns servers described in the historical responses Time Calculation of described multiple dns serversWeighted value between seasonable;
According to described response time weighted value select target DNS clothes in described multiple dns serversBusiness device.
2. the system of selection of dns server according to claim 1, is characterized in that, instituteState in conjunction with multiple dns servers described in the historical responses Time Calculation of described multiple dns serversThe step of response time weighted value, specifically comprises:
Determine the weighted value of described current response time according to the type of accessing terminal to network, and obtainDescribed historical responses time and the corresponding weighted value of described multiple dns servers;
According to the weighted value of described current response time, described current response time, described historical responsesThe weighted value of time and described historical responses time, calculates described response time weighted value.
3. the system of selection of dns server according to claim 1, is characterized in that,Before the described step that sends domain name mapping request to multiple dns servers, comprising:
Whether the access times that judge the each dns server in described multiple dns server are less thanPreset times;
When the access times of at least one dns server in described multiple dns servers are less than instituteWhile stating preset times, by DNS the clothes minimum access times in described at least one dns serverBusiness device is as target dns server;
When the access times of the described each dns server in described multiple dns servers are all greater thanOr while equaling described preset times, carry out describedly sending domain name mapping requests to multiple dns serversStep.
4. the system of selection of dns server according to claim 3, is characterized in that,Whether the described access times that judge the each dns server in described multiple dns server are less thanBefore the step of preset times, comprising:
Obtain the current geographic position at terminal place, and determine described many according to described current geographic positionIndividual dns server.
5. according to the system of selection of the dns server described in any one in claim 1 to 4, itsBe characterised in that, described in obtain the current sound of described multiple dns server to domain name analysis requestStep between seasonable, specifically comprises:
If receive the domain name mapping from the arbitrary dns server in described multiple dns serversResponse, the institute using the response time of described arbitrary dns server as described arbitrary dns serverState the current response time;
If do not receive the domain name solution from the arbitrary dns server in described multiple dns serversAnalyse response, the described current response time using the default response time as described arbitrary dns server.
6. a selecting arrangement for dns server, is characterized in that, comprising:
Transmitting element, for sending domain name mapping request to multiple dns servers;
Computing unit, for obtaining described multiple dns server working as domain name analysis requestThe front response time, and in conjunction with multiple described in the historical responses Time Calculation of described multiple dns serversThe response time weighted value of dns server;
Selected cell, for according to described response time weighted value at described multiple dns serversSelect target dns server.
7. the selecting arrangement of dns server according to claim 6, is characterized in that, instituteStating computing unit comprises:
Acquiring unit, for determining the power of described current response time according to the type of accessing terminal to networkHeavily be worth, and obtain described historical responses time and the corresponding weight of described multiple dns serversValue;
Described computing unit specifically for, according to described current response time, described current response timeThe weighted value of weighted value, described historical responses time and described historical responses time, calculate described soundWeighted value between seasonable.
8. the selecting arrangement of dns server according to claim 6, is characterized in that, alsoComprise:
Judging unit, for judging the visit of each dns server of described multiple dns serversAsk whether number of times is less than preset times;
The first determining unit, at least one the DNS service when described multiple dns serversWhen the access times of device are less than described preset times, by the visit in described at least one dns serverAsk that the dns server of least number of times is as target dns server;
Described transmitting element specifically for, as the described each DNS in described multiple dns serversWhen the access times of server are all more than or equal to described preset times, carry out described to multiple DNSServer sends the step of domain name mapping request.
9. the selecting arrangement of dns server according to claim 8, is characterized in that, alsoComprise:
The second determining unit, for obtaining the current geographic position at terminal place, and according to described currentDescribed multiple dns server is determined in geographical position.
10. according to the selecting arrangement of the dns server described in any one in claim 6 to 9,It is characterized in that, described computing unit comprises:
The 3rd determining unit, if for receiving arbitrary from described multiple dns serversThe domain name mapping response of dns server, using the response time of described arbitrary dns server as instituteState the described current response time of arbitrary dns server;
If do not receive the domain name solution from the arbitrary dns server in described multiple dns serversAnalyse response, the described current response time using the default response time as described arbitrary dns server.
11. 1 kinds of terminals, is characterized in that, comprising: as any one institute in claim 6 to 10The selecting arrangement of the dns server of stating.
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