CN107395683A - The system of selection of a kind of time source path and server - Google Patents
The system of selection of a kind of time source path and server Download PDFInfo
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- CN107395683A CN107395683A CN201710492681.1A CN201710492681A CN107395683A CN 107395683 A CN107395683 A CN 107395683A CN 201710492681 A CN201710492681 A CN 201710492681A CN 107395683 A CN107395683 A CN 107395683A
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- address
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- city
- network access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
-
- 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
- H04L67/61—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 taking into account QoS or priority requirements
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The embodiment of the invention discloses the system of selection of a kind of time source path and server.This method includes：According to domain name to be visited, after determining at least one IP address corresponding to domain name to be visited, the operator belonged to according to each IP address and the network access quality in city, and using IP address corresponding to network access quality highest operator and city as time source IP, it is achieved thereby that when having a plurality of operator's circuit, by the network access quality in operator and city selection Hui Yuan IP, rather than simply randomly choose a circuit, ensure that user can have access to resource with most fast speed, effectively increase access efficiency.
Description
Technical field
The present invention relates to field of computer technology, more particularly to system of selection and the server of a kind of time source path.
Background technology
In order to improve the access of user experience, content providers can all use CDN (content distributing network) technology, from
The nearer local construction node in family, for servicing this certain customers nearby.Due to the consideration of each side factor such as cost, content carries
Supplier selectively would generally dispose CDN node in subregion.
For example, for the user in Sichuan, content providers A may cover Sichuan electricity using the node of Sichuan telecommunications
The user of letter, the user of Sichuan UNICOM is covered using the node of Chongqing UNICOM；Content providers B may use Chongqing telecommunications
Node covers the user of Sichuan telecommunications, covers the user of Sichuan UNICOM using the node of Sichuan UNICOM.
The above situation is directed to, it is of the prior art a kind of real if user is covered by telecommunications and UNICOM's two lines road simultaneously
Existing mode is that acquiescence uses one kind in telecommunication line and UNICOM's circuit, however, the CDN node due to each content providers
Coverage condition is different, only selects a circuit merely, can not utilize the respective advantage of telecommunications and UNICOM's two lines road.
Another implementation is, according to the service condition of telecommunication line and UNICOM's line bandwidth, balancedly to ask user
Ask and be distributed in telecommunications, UNICOM's two lines road, if but user ask access be content providers B content, and act on behalf of clothes
Business device is assigned it in telecommunication line, then the efficiency that can cause to be carried out Hui Yuan using communication network is significantly less than using UNICOM's net
Network carries out Hui Yuan efficiency, so that this mode also can not select optimal circuit exactly to access network.
To sum up, in the prior art, when possessing multiple operator's circuits, optimal circuit can not be selected exactly and is come most
Limits improve user's access efficiency.
The content of the invention
The embodiment of the present invention provides system of selection and the server of a kind of time source path, for solving in the prior art can not
Go out optimal circuit from multiple operator's route choosings exactly to improve the technical problem of user's access efficiency to greatest extent.
The system of selection of a kind of time source path provided in an embodiment of the present invention, including：The access that client is sent is received to ask
Ask, parse the domain name to be visited in the access request；By domain name mapping, obtain corresponding to the domain name to be visited at least
One IP address；Each IP address is matched with the record in IP storehouses, knows the fortune of each IP address ownership
Seek business and city；The operator of each IP address ownership and the network access quality in city are obtained, obtains the net
Network accesses operator and city described in quality highest, and by the IP address corresponding to the operator and city, as
Return source IP.
Alternatively, the network access quality of the operator and city for obtaining each IP address ownership, bag
Include：The operator belonged to according to each IP address and city, inquire about network access statistic of attribute table, obtain each IP
The operator of address attribution and the network access quality in city.
Alternatively, the information acquisition step in the network access statistic of attribute table includes：Obtain home-operator and city
At least one IP address on the content server in city；The network detected up to the IP address on each content server is visited
Ask quality；According to the network access quality for reaching the IP address on each content server, calculate and record the operation
Business and the network access quality in city.
Alternatively, at least one IP address on the content server for obtaining home-operator and city, including obtain
Take and the IP address that temperature is more than or equal to heat degree threshold is accessed on the content server.
Alternatively, it is described to detect the network access quality up to the IP address on each content server, including visit
The performance number for the IP address surveyed on each content server of local arrival, and the net is calculated according to the performance number
Network accesses quality, wherein the performance number includes network delay, packet loss, connects into power, the delay of http head requests.
Alternatively, the network access quality pack detected up to the IP address on each content server contains the cycle
Property perform detection.
Alternatively, the method for the network access quality for calculating the operator and city is mean value method.
Alternatively, domain name parsing includes：Wait to visit to described using the domain name resolution server of at least one operator
Ask that domain name is parsed, obtain at least one IP address corresponding to the domain name to be visited.
Alternatively, the domain name to be visited is carried out parsing it in the name server using at least one operator
Before, in addition to：Determine in local cache in the absence of the effective domain name analysis result of the domain name to be visited.Alternatively, the IP
Storehouse is to be preset in local database.
The embodiment of the present invention provides a kind of server, and the server includes：Request analysis module, for receiving client
The access request of transmission, and parse the domain name to be visited in the access request；Domain name mapping module, for being asked according to described
The domain name to be visited that parsing module parses is sought, obtains at least one IP address corresponding to the domain name to be visited；Matching
Module, for each IP address to be matched with the record in IP storehouses, know the operation of each IP address ownership
Business and city；Path selection module, operator that each IP address for being known according to the matching module belongs to and
City, the network access quality in those described operators and city is obtained, obtain fortune described in the network access quality highest
Business and city are sought, and by the IP address corresponding to the operator and city, as returning source IP.
Detecting module, detect and calculate each operator and the network access quality in city, and the network access is provided
Quality information gives the path selection module.
Alternatively, the path selection module knows the operator of each IP address ownership and the network in city
The method for accessing quality, including：The operator belonged to according to each IP address and city, inquire about network access statistic of attribute
Table, obtain the operator of each IP address ownership and the network access quality in city.
Alternatively, the information in the network access statistic of attribute table comes from the detecting module, and the detecting module leads to
At least one IP address crossed on the content server for obtaining home-operator and city, and detect up to each content clothes
The network access quality for the IP address being engaged on device, further according to the network access for reaching the IP address on each content server
Quality, calculate and record the operator and the network access quality in city.
Alternatively, the detecting module is with obtaining at least one IP on the content server in home-operator and city
Location, including obtain and the IP address that temperature is more than or equal to heat degree threshold is accessed on the content server.
Alternatively, the detecting module detects the network access matter up to the IP address on each content server
Amount, including the local performance number for reaching the IP address on each content server of detection, and calculated according to the performance number
Obtain the network access quality, wherein the performance number include network delay, packet loss, connect into power, http head please
The delay asked.
Alternatively, the detecting module detects the network access quality up to the IP address on each content server
The detection performed comprising periodicity.
Alternatively, domain name parsing module is treated by using the domain name resolution server of at least one operator to described
Access domain name to be parsed, obtain at least one IP address corresponding to the domain name to be visited.
Alternatively, the name server of at least one operator is used to the domain to be visited in domain name parsing module
Before name is parsed, in addition to：Determine in local cache in the absence of the effective domain name analysis result of the domain name to be visited.
Alternatively, IP storehouses are to be preset in local database.
In the embodiment of the present invention, according to domain name to be visited, after determining at least one IP address corresponding to domain name to be visited,
The operator belonged to according to each IP address and the network access quality in city, and by network access quality highest operator and
IP address is used as back source IP corresponding to city, it is achieved thereby that when having a plurality of operator's circuit, by operator and the network in city
Access quality selection Hui Yuan IP, rather than simply one circuit of random selection, it is ensured that user can be accessed with most fast speed
To resource, access efficiency is effectively increased.
Brief description of the drawings
Fig. 1 is a kind of network architecture diagram provided in an embodiment of the present invention；
Fig. 2 is the schematic flow sheet corresponding to the system of selection for a kind of time source path that the present invention implements offer；
Fig. 3 is a kind of structural representation for server that the present invention implements offer.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, the present invention is made below in conjunction with accompanying drawing into
One step it is described in detail, it is clear that the described embodiment only a part of embodiment of the present invention, rather than whole implementation
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
All other embodiment, belongs to the scope of protection of the invention.
Fig. 1 is a kind of network architecture diagram provided in an embodiment of the present invention, as shown in figure 1, the network architecture includes service
Device 101, the first client 1021, the second client 1022 and the 3rd client 1023.First client 1021, the second client
1022 and the 3rd client 1023 can be communicated by wired or wireless network with the server 101.
Client in the embodiment of the present invention can be the equipment such as mobile phone, computer, tablet personal computer.Server can be with
For proxy server, proxy server gets respective request resource from content server and returned to according to client request
The server of client.
Based on the network architecture shown in Fig. 1, Fig. 2 is right for the system of selection for a kind of time source path that the present invention implements to provide
The schematic flow sheet answered, as shown in Fig. 2 this method includes：
Step 201, the access request that client is sent is received, parses the domain name to be visited in the access request.
Step 202, by domain name mapping, at least one IP address corresponding to the domain name to be visited is obtained.
Step 203, each IP address is matched with the record in IP storehouses, knows each IP address ownership
Operator and city.
Step 204, the operator of each IP address ownership and the network access quality in city are obtained, obtains institute
State operator and city described in network access quality highest, and by the IP address corresponding to the operator and city,
As time source IP.
In the embodiment of the present invention, according to domain name to be visited, after determining at least one IP address corresponding to domain name to be visited,
The operator belonged to according to each IP address and the network access quality in city, and by network access quality highest operator and
IP address is used as back source IP corresponding to city, it is achieved thereby that when having a plurality of operator's circuit, by operator and the network in city
Access quality selection Hui Yuan IP, rather than simply one circuit of random selection, it is ensured that user can be accessed with most fast speed
To resource, access efficiency is effectively increased.
In the application, above-mentioned steps 201 can be performed to step 204 by the server 101 shown in Fig. 1.
In step 201, access request message can be http request message, such as http://www.demo.com/.Clothes
After business device receives http request message, domain name www.demo.com is parsed.
In step 202, DNS (Domain Name System, the domain name system of at least one operator can be used in server
System) domain name to be visited is parsed, obtain at least one IP address corresponding to the domain name to be visited.Specifically,
Server can be communicated with the dns server of at least one operator, at least one corresponding to domain name to be visited so as to obtain
IP address.For example, operator includes operator 1, operator 2 and operator 3, server can be sent out to the dns server of operator 1
Domain name to be visited is sent, the dns server of operator 1 obtains IP address corresponding to domain name to be visited (such as according to domain name to be visited
IP1, IP2) and server is sent to, similarly, the domain name to be visited that the dns server that server receives operator 2 returns is corresponding
IP address (such as IP3) and operator 3 dns server return domain name to be visited corresponding to IP address (such as IP4), so as to
It can obtain at least one IP address, i.e. IP1, IP2, IP3, IP4 corresponding to domain name to be visited.
After server is to carrying out dns resolution, the dns resolution result of domain name can be cached, in order to further save process resource,
In the embodiment of the present invention, after server obtains domain name to be visited, it can first judge domain name to be visited whether is stored with server
Dns resolution result, if so, then can be directly according to dns resolution result, with obtaining at least one IP corresponding to domain name to be visited
Location, in such cases, server effectively increase treatment effeciency without carrying out dns resolution for domain name to be visited again；If nothing,
It then the domain name system DNS of at least one operator can be used to parse the domain name to be visited, obtain the domain to be visited
At least one IP address corresponding to name.
Further, in order to ensure the accuracy of the dns resolution result of domain name cached in server, the embodiment of the present invention
In can also determine whether caching dns resolution result it is whether expired, specifically, if the caching duration of dns resolution result
Not less than setting duration, then it is effective dns resolution result to set dns resolution result.Wherein, setting duration can be by DNS service
Device is set, and different domain names can correspond to different setting durations.Server determines to be stored with the DNS of domain name to be visited in server
Analysis result, and the dns resolution result be effective dns resolution result after, can be treated directly according to dns resolution result
Access at least one IP address corresponding to domain name；Otherwise, the domain name system DNS of at least one operator can be used to wait to visit to described
Ask that domain name is parsed, obtain at least one IP address corresponding to the domain name to be visited.
In the embodiment of the present invention, IP storehouses are the database for being preset in server local, may include to have in IP storehouses IP address with
And operator and the city of the IP address ownership.IP storehouses can use various ways to store, for example, being entered by the way of tables of data
Row storage, the wherein information in IP storehouses may be from the IP information banks in public network IP storehouse and/or operator's offer and server itself obtains
Information.As shown in table 1, the content signal included for IP storehouses.
Table 1：The content signal that IP storehouses include
| IP address | The operator of IP address ownership | The city of IP address ownership |
| IP 1 | Operator 1 | City 1 |
| IP 2 | Operator 1 | City 1 |
| IP 3 | Operator 2 | City 2 |
| …… | …… | …… |
Illustrate it should be noted that content included in table 1 is only part, those skilled in the art can be according to actual need
To increase related content on the basis of table 1.
In step 203, server is matched each individual IP address with the record in IP storehouses, can obtain the IP
The operator of address attribution and city, for example, the operator of IP1 ownership and city are operator 1, city 1；The fortune of IP2 ownership
It is operator 1, city 1 to seek business and city；The operator of IP3 ownership and city are operator 2, city 2；The operation of IP4 ownership
Business and city are operator 3, city 1., can be according to it should be noted that if the record matching in IP address and IP storehouses fails
Default rule carries out Hui Yuan, and returns to it fails to match information simultaneously, and so that IP storehouses carry out perfect in time, default rule is sets in advance
Put.
In the embodiment of the present invention, server can be stored with the network access statistic of attribute table in operator and city, operator
It may include the network access quality in operator and city with the network access statistic of attribute table in city, be operator as shown in table 2
Meaning is represented with the network access statistic of attribute in city.
Table 2：The network access statistic of attribute in operator and city represents meaning
By the way that network access quality of the operator in city is stored in table, acquisition can be directly inquired about, without instant
Detected so that treatment effeciency is high.
In the embodiment of the present invention, network access statistic of attribute table is periodically to be updated, specific real comprising two kinds
Existing mode：Mode one, the record in the network access statistic of attribute table used in current period were the data according to a upper cycle
It is calculated, is that data volume is more complete the advantages of this mode；Mode two, the network access quality system used in current period
Record in meter table is namely based on what data caused by current period obtained, is that the data of record are more the advantages of this mode
Immediately.The method of IP address network access quality on content server can set weight for each performance number, further according to each
The network access quality of some IP address is calculated in the weight * concrete numerical value sums of performance number, and weight can be according to the actual requirements
Set.
Server can according to IP1, IP2, IP3, IP4 belong to operator and city and table 2, obtain IP1, IP2, IP3,
The operator of IP4 ownership and the network access quality in city, and by corresponding to network access quality highest operator and city
IP address is used as back source IP.Due to operator 3, the network access quality highest in city 1, therefore can be by home-operator 3 and city
IP address corresponding to city 1 is used as back source IP.
Using aforesaid way, operator that the IP address that is gone out according to domain name mapping belongs to city network access quality,
Quick select can be integrated and preferably return source IP, if without the city of network quality highest operator, can be advised by acquiescence
Then carry out Hui Yuan.
In the embodiment of the present invention, the network access quality in operator and city can obtain in the following manner：Server
At least one IP address on the content server in home-operator and city is obtained, is detected up to each content server
On IP address network access quality, and according to the network access matter for reaching the IP address on each content server
Amount, calculate and record the operator and the network access quality in city.
Wherein, it is described to detect the network access quality up to the IP address on each content server, including detection
It is local to reach the performance number of the IP address on each content server, and the network is calculated according to the performance number
Quality is accessed, wherein the performance number includes network delay, packet loss, connects into power, the delay of http head requests；This
A little design parameters can be chosen according to the actual requirements.The network detected up to the IP address on each content server is visited
Ask the detection that quality pack performs containing periodicity.
Specifically, exemplified by determining the network access quality in operator 1 and city 1, if home-operator 1 and city 1
Content server on IP address include IP1, IP2, IP5, IP6 ..., the M address such as IPm.Server can use operation
The circuit of business 1 sends probe request message respectively to M address, with detecting the local IP reached on each content server
The performance number of location, and according to performance number, the network access quality in operator 1 and city 1 is obtained using mean value method.
In view of server using operator 1 circuit to M address send respectively probe request message can consume it is more
Transfer resource, and increase processing load, in the embodiment of the present invention, server can be according to setting cycle statistics home-operator 1
With the access temperature of multiple IP address in city 1, and according to accessing the descending order of temperature to home-operator 1 and city
1 multiple IP address are ranked up, in other words, big by temperature is accessed using K IP address for sorting forward as target ip address
In the IP address equal to heat degree threshold as target ip address, using target ip address described in the line sniffing of operator 1, according to
Result of detection obtains the network access quality in operator 1 and city 1.Wherein, K value can be by those skilled in the art according to warp
Test with actual conditions to set, for example, settable K=10.
The access temperature of IP address can determine according to the requested number accessed of the IP address, specifically, server
After parsing IP1, IP2, IP3, IP4 corresponding to domain name to be visited, IP1, IP2, IP3, IP4 access temperature can be added 1 respectively.
In the embodiment of the present invention, the access temperature of IP address can periodically update, and concrete implementation mode has two
Kind：Mode one, the hot value of current period refer to for next cycle, mode two, and the hot value of current period is used for currently
Cycle.
Using aforesaid way, the side that all IP address of home-operator and city are all detected compared to server
For formula, detected by choosing the higher several IP address of access temperature, and visited according to the network of these temperature IP address
Ask that Mass Calculation goes out the network access quality in operator and city, detection pressure can be greatly reduced.
Subsequent server can send the resource request message of domain name to be visited according to time source IP to source station, and receive source station and return
The response message returned, response message include the resource of domain name to be visited, and then described in the resource of domain name to be visited returned to
Client.
Above method flow is directed to, the embodiment of the present invention also provides a kind of server, and the particular content of the server can
Implement with reference to the above method.
Fig. 3 is a kind of structural representation of server provided in an embodiment of the present invention, as shown in figure 3, the server bag
Include：Request analysis module 301, domain name mapping module 302, matching module 303, path selection module 304 and detecting module 305.
Wherein, request analysis module 301, the access request that client is sent is received, and parsed in the access request
Domain name to be visited, and domain name to be visited is sent to domain name mapping module 302；Domain name mapping module 302, according to request analysis
The domain name to be visited that module 301 parses, obtains at least one IP address corresponding to domain name to be visited, and be sent to matching
Module 303.Matching module 303, each IP address is matched with the record in IP storehouses, know each IP address
The operator of ownership and city.Path selection module 304, each IP address known according to the matching module 303 are returned
The operator of category and city, the network access quality in those described operators and city is obtained, obtain the network access quality
Operator described in highest and city, and by the IP address corresponding to the operator and city, as returning source IP.Detection
Module 305, detect and calculate each operator and the network access quality in city, and provide network access quality information to path
Selecting module 304.
Specifically, path selection module 304 knows the operator of each IP address ownership and the network in city
The method for accessing quality, including：The operator belonged to according to each IP address and city, inquire about network access statistic of attribute
Table, obtain the operator of each IP address ownership and the network access quality in city.
Information in network access statistic of attribute table comes from the detecting module 305, and detecting module 305 is belonged to by obtaining
At least one IP address on the content server in operator and city, and detect up to the IP on each content server
The network access quality of address, further according to the network access quality for reaching the IP address on each content server, calculate
And record the network access quality in the operator and city.
Detecting module 305 obtains at least one IP address on the content server in home-operator and city, including obtains
Take and the IP address that temperature is more than or equal to heat degree threshold is accessed on the content server.
Detecting module 305 detects the network access quality up to the IP address on each content server, including visits
The performance number for the IP address surveyed on each content server of local arrival, and the net is calculated according to the performance number
Network accesses quality, wherein the performance number includes network delay, packet loss, connects into power, the delay of http head requests.
The network access quality pack that detecting module 305 is detected up to the IP address on each content server contains the cycle
Property perform detection.
Domain name mapping module 302 is by using the domain name resolution server of at least one operator to the domain name to be visited
Parsed, obtain at least one IP address corresponding to the domain name to be visited.
The domain name to be visited is solved using the name server of at least one operator in domain name mapping module 302
Before analysis, in addition to：Determine in local cache in the absence of the effective domain name analysis result of the domain name to be visited.IP storehouses are default
IP information banks in local, the IP information banks and server that the information in IP storehouses may be from public network IP storehouse and/or operator provides from
The information that body obtains
It can be seen from the above：
In the embodiment of the present invention, according to domain name to be visited, after determining at least one IP address corresponding to domain name to be visited,
The operator belonged to according to each IP address and the network access quality in city, and by network access quality highest operator and
IP address is used as back source IP corresponding to city, it is achieved thereby that when having a plurality of operator's circuit, by operator and the network in city
Access quality selection Hui Yuan IP, rather than simply one circuit of random selection, it is ensured that user can be accessed with most fast speed
To resource, access efficiency is effectively increased.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method or computer program product.
Therefore, the present invention can be using the embodiment in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Form.Deposited moreover, the present invention can use to can use in one or more computers for wherein including computer usable program code
The shape for the computer program product that storage media is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Formula.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (19)
1. the system of selection of a kind of time source path, it is characterised in that methods described includes：
The access request that client is sent is received, parses the domain name to be visited in the access request；
By domain name mapping, at least one IP address corresponding to the domain name to be visited is obtained；
Each IP address is matched with the record in IP storehouses, knows operator and the city of each IP address ownership
City；
The operator of each IP address ownership and the network access quality in city are obtained, obtains the network access matter
Operator and city described in highest are measured, and by the IP address corresponding to the operator and city, as with returning source IP
Location.
2. according to the method for claim 1, it is characterised in that the operation for obtaining each IP address ownership
Business and the network access quality in city, including：
The operator belonged to according to each IP address and city, inquire about network access statistic of attribute table, obtain each described
The operator of IP address ownership and the network access quality in city.
3. according to the method for claim 2, it is characterised in that the information acquisition step in the network access statistic of attribute table
Suddenly include：
Obtain at least one IP address on the content server in home-operator and city；
Detect the network access quality up to the IP address on each content server；
According to the network access quality for reaching the IP address on each content server, calculate and record the operator and
The network access quality in city.
4. according to the method for claim 3, it is characterised in that the content server for obtaining home-operator and city
On at least one IP address, including obtain and the IP address that temperature is more than or equal to heat degree threshold accessed on the content server.
5. according to the method for claim 3, it is characterised in that described to detect up to the IP on each content server
The network access quality of address, including the local performance number for reaching the IP address on each content server of detection, and root
The network access quality is calculated according to the performance number, wherein the performance number includes network delay, packet loss, connected into
Power, the delay of http head requests.
6. according to the method for claim 3, it is characterised in that described to detect up to the IP on each content server
The detection that the network access quality pack of address performs containing periodicity.
7. according to the method for claim 3, it is characterised in that the network access matter for calculating the operator and city
The method of amount is mean value method.
8. according to the method for claim 1, it is characterised in that domain name parsing includes：
The domain name to be visited is parsed using the domain name resolution server of at least one operator, obtained described to be visited
At least one IP address corresponding to domain name.
9. according to the method for claim 8, it is characterised in that in the name server using at least one operator
Before being parsed to the domain name to be visited, in addition to：
Determine in local cache in the absence of the effective domain name analysis result of the domain name to be visited.
10. according to the method for claim 1, it is characterised in that the IP storehouses are to be preset in local database.
11. a kind of server, it is characterised in that the server includes：
Request analysis module, for receiving the access request of client transmission, and parse to be visited in the access request
Domain name；
Domain name mapping module, for the domain name to be visited parsed according to the request analysis module, obtain described waiting to visit
Ask at least one IP address corresponding to domain name；
Matching module, for each IP address to be matched with the record in IP storehouses, know that each IP address is returned
The operator of category and city；
Path selection module, the operator and city that each IP address for being known according to the matching module belongs to,
Obtain the network access quality in those described operators and city, obtain operator described in the network access quality highest and
City, and by the IP address corresponding to the operator and city, as returning source IP.
Detecting module, detect and calculate each operator and the network access quality in city, and the network access quality is provided
Information gives the path selection module.
12. server according to claim 11, it is characterised in that the path selection module is with knowing each IP
The operator of location ownership and the method for the network access quality in city, including：
The operator belonged to according to each IP address and city, inquire about network access statistic of attribute table, obtain each described
The operator of IP address ownership and the network access quality in city.
13. server according to claim 12, it is characterised in that the information in the network access statistic of attribute table is come
From the detecting module, at least one IP on content server of the detecting module by obtaining home-operator and city
Address, and the network access quality up to the IP address on each content server is detected, it is each described further according to reaching
The network access quality of IP address on content server, calculate and record the operator and the network access quality in city.
14. server according to claim 13, it is characterised in that the detecting module obtains home-operator and city
Content server at least one IP address, including obtain and temperature is accessed on the content server be more than or equal to temperature threshold
The IP address of value.
15. server according to claim 13, it is characterised in that the detecting module is detected up to each content
The network access quality of IP address on server, including detection locally reach the IP address on each content server
Performance number, and the network access quality is calculated according to the performance number, wherein the performance number includes network delay, lost
Bag rate, connect into power, the delay of http head requests.
16. server according to claim 13, it is characterised in that the detecting module is detected up to each content
The detection that the network access quality pack of IP address on server performs containing periodicity.
17. server according to claim 11, it is characterised in that domain name parsing module is by using at least one
The domain name resolution server of operator parses to the domain name to be visited, obtains at least one corresponding to the domain name to be visited
Individual IP address.
18. server according to claim 17, it is characterised in that use at least one fortune in domain name parsing module
Before the name server of battalion business parses to the domain name to be visited, in addition to：
Determine in local cache in the absence of the effective domain name analysis result of the domain name to be visited.
19. server according to claim 11, it is characterised in that IP storehouses are to be preset in local database.
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