CN105704034A - Network access method and central server - Google Patents
Network access method and central server Download PDFInfo
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- CN105704034A CN105704034A CN201610209537.8A CN201610209537A CN105704034A CN 105704034 A CN105704034 A CN 105704034A CN 201610209537 A CN201610209537 A CN 201610209537A CN 105704034 A CN105704034 A CN 105704034A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/122—Shortest path evaluation by minimising distances, e.g. by selecting a route with minimum of number of hops
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/126—Shortest path evaluation minimising geographical or physical path length
Abstract
The invention discloses a network access method and a central server. The method provided by the embodiment of the invention includes that the central server obtains a first transmission distance between a target terminal and a first acceleration server and obtains a second transmission distance between the target terminal and a second acceleration server; the central server obtains a third transmission distance between the first acceleration server and a source server and obtains a fourth transmission distance between the second acceleration server and the source server; the central server selects a minimum transmission distance from the sum of the first transmission distance and the third transmission distance and the sum of the second transmission distance and the fourth transmission distance; the central server takes the acceleration server in a path corresponding to the minimum transmission distance as a target acceleration server to be accessed by the target terminal. The invention solves a technical problem that a path selected by the terminal when the terminal is accessing to a network is not the optimal path.
Description
Technical field
The application relates to network field, in particular to a kind of method accessing network and central server。
Background technology
Content distributing network (ContentDeliveryNetwork, it is called for short CDN) owing to using cache way to realize accelerating, data source is essentially from fringe node, so the quality of effect, depend primarily on fringe node to the RTT value of overlay area client and packet loss, concern is primarily with the transmission time at edge, so reconnaissance mainly selects Tong Cheng, covers with the such this locality nearby of operator。Such O&M is disposed, also just relatively easy, as long as the edge Lastmile to certain region that knows the real situation covers。But for dynamically accelerating scene based on the application of the transport layer protocols such as TCP/UDP, data source is not essentially from fringe node, but obtains from source station real-time, interactive, the RTT value of the mainly complete trails of concern and packet loss。Now, the scheme still adopting CDN this locality to cover, then cannot meet the demand of client。
Existing CDN this locality covers the drawback of scheme existence: Lastmile is not involved in dynamic routing, directly the fixing covering selected nearby, and the path chosen is not necessarily omnidistance optimal path, it is impossible to realize whole process is accelerated。
For above-mentioned problem, effective solution is not yet proposed at present。
Summary of the invention
The embodiment of the present application provides a kind of method accessing network and central server, and the path selected during at least to solve accessing terminal to network in prior art is not the technical problem of optimal path。
An aspect according to the embodiment of the present application, provide a kind of method accessing network, including: central server obtains target terminal and first and accelerates the first transmission range of server, and obtains described target terminal and the second transmission range of the second acceleration server；Described central server obtains the described first the 3rd transmission range accelerating server and source server, and obtains the described second the 4th transmission range accelerating server and described source server；Described central server selects most short transmission distance from described first transmission range and described 3rd transmission range sum, described second transmission range and described 4th transmission range sum；The target that server accesses as described target terminal of accelerating in path corresponding for described most short transmission distance is accelerated server by described central server。
Further, described central server obtains target terminal and first and accelerates the first transmission range of server, and obtain described target terminal and the second the second transmission range accelerating server includes: described central server obtains the first transmission parameter that described target terminal and described first accelerates between server, and obtain the second transmission parameter that described target terminal and described second accelerates between server, wherein, described first transmission parameter is accelerated server by described first and is detected and report described central server, described second transmission parameter is accelerated server by described second and is detected and report described central server；Described central server transmits the first transmission range described in parameter acquiring according to described first, and transmits the second transmission range described in parameter acquiring according to described second。
Further, described central server transmits the first transmission range described in parameter acquiring according to described first, and the second transmission range according to described second transmission parameter acquiring includes: described central server judges whether to receive described first transmission parameter and described second transmission parameter；Described central server, when judging to receive described first transmission parameter and described second transmission parameter, transmits the first transmission range described in parameter acquiring according to described first, and transmits the second transmission range described in parameter acquiring according to described second。
Further, the first transmission range described in parameter acquiring is transmitted according to described first at described central server, and before transmitting the second transmission range described in parameter acquiring according to described second, described method also includes: described central server receives the inquiry request that described acceleration server sends, IP storehouse in described inquiry request central server described in requesting query, wherein, described IP stock contain have been coupled to described central server terminal in a network；Described central server responds described inquiry request and sends described IP storehouse to described acceleration server, so that described acceleration server identifies described target terminal to be detected。
Further, after the described central server described inquiry request of response sends described IP storehouse to described acceleration server, described method also includes: described acceleration server judges whether terminal to be detected；When described acceleration server judges to exist terminal to be detected, send detection information to described terminal to be detected；Described acceleration server receives the response message that described terminal to be detected sends；Described acceleration server judges whether to detect successfully according to described response message；Under detecting successful situation, described acceleration server calculates the transmission parameter between described acceleration server and described terminal to be detected。
Further, to path corresponding for described most short transmission distance accelerate after the target that server accesses as described target terminal accelerates server at described central server, described method also includes: described central server sends described target to dns server and accelerates the mark of server, so that described dns server controls described target terminal and accesses described target acceleration server。
Another aspect according to the embodiment of the present application, additionally provide a kind of central server, including: the first acquiring unit, accelerates the first transmission range of server, and obtains described target terminal and the second transmission range of the second acceleration server for obtaining target terminal and first；Second acquisition unit, for obtaining the described first the 3rd transmission range accelerating server and source server, and obtains the described second the 4th transmission range accelerating server and described source server；Select unit, for selecting most short transmission distance from described first transmission range and described 3rd transmission range sum, described second transmission range and described 4th transmission range sum；Determine unit, for the target that server accesses as described target terminal of accelerating in path corresponding for described most short transmission distance is accelerated server。
Further, described first acquiring unit includes: first obtains subelement, for obtaining the first transmission parameter that described target terminal and described first accelerates between server, and obtain the second transmission parameter that described target terminal and described second accelerates between server, wherein, described first transmission parameter is accelerated server by described first and is detected and report described central server, and described second transmission parameter is accelerated server by described second and detected and report described central server；Second obtains subelement, for transmitting the first transmission range described in parameter acquiring according to described first, and transmits the second transmission range described in parameter acquiring according to described second。
Further, described second obtains subelement includes: judge module, is used for judging whether to receive described first transmission parameter and described second transmission parameter；Acquisition module, for when described judge module judges to receive described first transmission parameter and described second transmission parameter, transmit the first transmission range described in parameter acquiring according to described first, and transmit the second transmission range described in parameter acquiring according to described second。
Further, described central server also includes: receive unit, the first transmission range described in parameter acquiring is transmitted according to described first for obtaining subelement described second, and before transmitting the second transmission range described in parameter acquiring according to described second, receive the inquiry request that described acceleration server sends, described inquiry request is for the IP storehouse in central server described in requesting query, wherein, described IP stock contain have been coupled to described central server terminal in a network；First transmitting element, is used for responding described inquiry request and sends described IP storehouse to described acceleration server, so that described acceleration server identifies described target terminal to be detected。
Further, described central server also includes: the second transmitting element, for determining that unit will accelerate after the target that server accesses as described target terminal accelerates server in path corresponding for described most short transmission distance described, send described target to dns server and accelerate the mark of server, so that described dns server controls described target terminal and accesses described target acceleration server。
In the embodiment of the present application, central server obtains target terminal and first and accelerates the first transmission range of server, and obtains target terminal and the second transmission range of the second acceleration server；Central server obtains the 3rd transmission range of the first acceleration server and source server, and obtains the 4th transmission range of the second acceleration server and source server；Central server selects most short transmission distance from the first transmission range and the 3rd transmission range sum, the second transmission range and the 4th transmission range sum；Central server will accelerate, in path corresponding for most short transmission distance, the target acceleration server that server accesses as target terminal。
By obtaining the different transmission ranges accelerated between server and terminal, the transmission range accelerated between server and terminal and the transmission range accelerated between server and source server are sued for peace, find out most short transmission distance, and then find path corresponding to most short transmission distance, path corresponding for most short transmission distance will accelerate the acceleration server that server accesses as terminal, owing to considering, when selecting transmission path, the transmission range accelerated between server and terminal, it is thus possible to the optimal path obtained between source server and terminal, reach to determine the technique effect of optimal path when by accessing terminal to network, and then the path selected when solving accessing terminal to network in prior art is not the technical problem of optimal path。
Accompanying drawing explanation
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, and the schematic description and description of the application is used for explaining the application, is not intended that the improper restriction to the application。In the accompanying drawings:
Fig. 1 is the flow chart of the method accessing network according to embodiments of the present invention；
Fig. 2 is the logical structure schematic diagram for performing to access the hardware of the method for network according to embodiments of the present invention；
Fig. 3 is the hardware structure topological diagram for performing to access the method for network according to embodiments of the present invention；
Fig. 4 is the flow chart of the method accelerating server update acceleration server info and IP storehouse information according to embodiments of the present invention；
Fig. 5 is that the server that accelerates according to embodiments of the present invention treats the flow chart of the method that detecting terminal is detected；
Fig. 6 is the flow chart that acceleration server according to embodiments of the present invention uploads the method for new detection data to central server；
Fig. 7 is the flow chart that the method covering configuration node of optimum determined by central server according to embodiments of the present invention；
Fig. 8 is the flow chart of the method for the optimum overlay node of dns server scheduling according to embodiments of the present invention；
Fig. 9 is the flow chart of the optional method accessing network according to embodiments of the present invention；
Figure 10 is the schematic diagram of the composition structure of the central server provided according to embodiments of the present invention。
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the application scheme, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the embodiment of the application part, rather than whole embodiments。Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, all should belong to the scope of the application protection。
It should be noted that term " first " in the description and claims of this application and above-mentioned accompanying drawing, " second " etc. are for distinguishing similar object, without being used for describing specific order or precedence。Should be appreciated that the data of so use can be exchanged in the appropriate case, in order to embodiments herein described herein can with except here diagram or describe those except order implement。In addition, term " includes " and " having " and their any deformation, it is intended to cover non-exclusive comprising, such as, contain series of steps or the process of unit, method, system, product or equipment be not necessarily limited to those steps or the unit clearly listed, but can include clearly not listing or for intrinsic other step of these processes, method, product or equipment or unit。
First description below is made in the technical term involved by the embodiment of the present application:
Dijkstra's algorithm: dijkstra's algorithm (Dijkstra's algorithm) is typical shortest-path rout ing algorithms, for calculating the node shortest path to other all nodes, it is mainly characterized by centered by starting point outwards to extend layer by layer, till expanding to terminal。Dijkstra's algorithm can be derived that the optimal solution of shortest path。
RTT (RoundTripTime, round-trip delay): in a computer network, RTT represents from transmitting terminal transmission data, receives the confirmation (receiving terminal soon sends confirmation after receiving data) from receiving terminal, the time delay altogether experienced to transmitting terminal。
Lastmile: last one kilometer is communication and technology industry in order to describe the term of technology by terminal use's incoming communication network and step。
According to the embodiment of the present application, provide the embodiment of a kind of method accessing network, it should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although illustrate logical order in flow charts, but in some cases, it is possible to perform shown or described step with the order being different from herein。
Fig. 1 is the flow chart of the method accessing network according to embodiments of the present invention, as it is shown in figure 1, the method comprises the steps:
Step S102, central server obtains target terminal and first and accelerates the first transmission range of server, and obtains target terminal and the second transmission range of the second acceleration server。
Step S104, central server obtains the 3rd transmission range of the first acceleration server and source server, and obtains the 4th transmission range of the second acceleration server and source server。
Step S106, central server selects most short transmission distance from the first transmission range and the 3rd transmission range sum, the second transmission range and the 4th transmission range sum。
Step S108, central server will accelerate, in path corresponding for most short transmission distance, the target acceleration server that server accesses as target terminal。
By obtaining the different transmission ranges accelerated between server and terminal, the transmission range accelerated between server and terminal and the transmission range accelerated between server and source server are sued for peace, find out most short transmission distance, and then find path corresponding to most short transmission distance, path corresponding for most short transmission distance will accelerate the acceleration server that server accesses as terminal, owing to considering, when selecting transmission path, the transmission range accelerated between server and terminal, it is thus possible to the optimal path obtained between source server and terminal, the path selected when solving accessing terminal to network in prior art is not the technical problem of optimal path, reach to determine the technique effect of optimal path when by accessing terminal to network。
It should be noted that the transmission range in the embodiment of the present invention can adopt the transmission time to weigh, path corresponding to most short transmission distance can be the path of transmission shortest time。
The execution process of the method accessing network that the embodiment of the present invention provides relates to four class hardware: central server, acceleration service node (i.e. above-mentioned acceleration server), source station (i.e. above-mentioned source server) and dns server。
The effect of central server is: RTT and packet loss between last one kilometer (namely accelerating the path between server and the terminal) result of detection being responsible for providing the whole network node (i.e. above-mentioned acceleration service node) information, upload according to each node in the whole network, node and between source station calculate optimal path, it is provided that optimal path information is downloaded and issued with last one kilometer data access point tuning result。Containing above-mentioned target in optimal path information and accelerate server, the server of last one kilometer data access point instruction is target and accelerates server。
Accelerating service node is the component units of data transfer path, accelerates service node and is responsible for the transmission of customer data, carries out between node and the timing probe of source station, active and upload result of detection in real time and download optimal path information。
The effect of source station is: accelerating server to each provides data, and the data that source station provides are transferred to the terminal that self covers by each acceleration server。
The effect of dns server is: receives optimal path information and last one kilometer data access dot information that central server sends, and updates local DNSMAP information, to control target terminal access target acceleration server。
Fig. 2 is the logical structure schematic diagram for performing to access the hardware of the method for network according to embodiments of the present invention。As in figure 2 it is shown, the framework of hardware includes: accelerate service node module, central server module and dns server module。Central server module includes cloud dispatching algorithm module and optimum covering configuration distributing module。
Accelerate service node module and be arranged in acceleration server, primary responsibility collects record in the IP address of client, the state of record IP address (such as TCP is online, off-line and other), it is responsible for each region client Lastmile mass is detected simultaneously, result of detection is uploaded to central server module, and downloads up-to-date IP storehouse information and nodal information from central server。
In the centrally located server of central server module, Lastmile detection data is carried out statistical analysis by primary responsibility, automatically calculates optimum and covers, and according to result of calculation, by configuring interface, covering adjusts configuration distributing to dns server。Meanwhile, it is also responsible for the result of calculation by each region and displays with map styles, for user's visual check。Cover the information adjusting the target acceleration server that configuration information includes target terminal connection。
Each regionally detecting data that acceleration service node is uploaded by the cloud dispatching algorithm module primary responsibility in central server are calculated and analyze, and provide the optimum calculated to cover configuration file。
Optimum in central server covers configuration distributing module primary responsibility and docks with dns server, calling interface by the optimum adjustment configuration distributing that covers that calculates to dns server。
Dns server module is arranged in dns server, and primary responsibility receives the optimum covering Suitable content that central server issues, and is analyzed with self existing configuration, automatically adjusts optimum covering after resolving the optimum covering Suitable content that central server issues。When there is the information of the target acceleration server that new target terminal connects, dns server updates the optimum of self storage and covers configuration file。
Fig. 3 is the hardware structure topological diagram for performing to access the method for network according to embodiments of the present invention。Fig. 3 includes central server, accelerates service node and dns server。Each acceleration service node covers a panel region。
Alternatively, central server obtains target terminal and first and accelerates the first transmission range of server, and obtain target terminal and the second the second transmission range accelerating server includes: central server obtains the first transmission parameter that target terminal and first accelerates between server, and obtain the second transmission parameter that target terminal and second accelerates between server, wherein, first transmission parameter is accelerated server by first and is detected and report central server, and the second transmission parameter is accelerated server by second and detected and report central server；Central server transmits parameter acquiring the first transmission range according to first, and transmits parameter acquiring the second transmission range according to second。
Source server, the first acceleration server and target terminal constitute a transmission paths, and source server, the second acceleration server and target terminal constitute another transmission paths。First parameter accelerating the data transmission between server and target terminal is the first transmission parameter。Second parameter accelerating the data transmission between server and target terminal is the second transmission parameter。
First the first transmission parameter accelerating the data transmission between server detection the first acceleration server and target terminal, and transmit reporting parameters by first to central server。Second the second transmission parameter accelerating the data transmission between server detection the second acceleration server and target terminal, and transmit reporting parameters by second to central server。
Central server transmits parameter acquiring first according to first and accelerates the first transmission range between server and target terminal, and accelerates the second transmission range between server and target terminal according to the second transmission parameter acquiring second。
The transmission range in the transmission path of source server, acceleration server and target terminal composition can adopt below equation to be calculated:
Source server, the transmission range=source server accelerating the transmission path of server and target terminal composition and the transmission range of transmission range+between acceleration server and target terminal accelerated between server。
Transmission range=the first transmission range+the three transmission range in the transmission path of source server, the first acceleration server and target terminal composition。
Transmission range=the second transmission range+the four transmission range in the transmission path of source server, the second acceleration server and target terminal composition。
From the side that the first transmission range and the 3rd transmission range sum and the second transmission range are less with selection both the 4th transmission range sums, as most short transmission distance。
When accelerating the quantity of server more than two, then compare between two according to said method, find out most short transmission distance。
Path corresponding for most short transmission distance will accelerate the target acceleration server that server accesses as target terminal。
When most short transmission distance be source server, first accelerate the transmission range in transmission path of server and target terminal composition time, accelerate the target acceleration server that server accesses as target terminal using first。
When most short transmission distance be source server, second accelerate the transmission range in transmission path of server and target terminal composition time, accelerate the target acceleration server that server accesses as target terminal using second。
Alternatively, central server transmits parameter acquiring the first transmission range according to first, and includes according to second transmission parameter acquiring the second transmission range: central server judges whether to receive the first transmission parameter and the second transmission parameter；Central server, when judging to receive the first transmission parameter and the second transmission parameter, transmits parameter acquiring the first transmission range according to first, and transmits parameter acquiring the second transmission range according to second。
Transmission parameter can be RTT, packet loss etc.。Accelerate server terminal is detected, obtain transmission parameter。Accelerating server and will transmit reporting parameters to central server, central server, according to the transmission parameter received, calculates the transmission range accelerated between server and terminal。
Central server stores the tables of data of transmission parameter, when the tables of data that transmission parameter judged by central server has renewal, namely judges to receive the first transmission parameter and the second transmission parameter。
Alternatively, parameter acquiring the first transmission range is transmitted according to first at central server, and before transmitting parameter acquiring the second transmission range according to second, method also includes: central server receives and accelerates the inquiry request that server sends, inquiry request is for the IP storehouse in requesting query central server, wherein, IP stock contain have been coupled to central server terminal in a network；Central server response inquiry request sends IP storehouse to accelerating server, so that accelerating server to identify target terminal to be detected。
Accelerating server and send inquiry request to central server, inquiry request is for the IP storehouse in requesting query central server。Central server response inquiry request sends IP storehouse to accelerating server。Accelerate server and receive IP storehouse, identify target terminal to be detected according to the information in IP storehouse。Wherein, in IP storehouse storage and accelerate the terminal that server local do not store and be target terminal。
Fig. 4 is the flow chart of the method accelerating server update acceleration server info and IP storehouse information according to embodiments of the present invention。As shown in Figure 4, the method comprises the following steps:
Step S402, to central server requests the whole network nodal information and IP storehouse information。The information of nodal information and above-mentioned acceleration server。
After the timed task updating the whole network nodal information and IP storehouse information is opened, accelerating server and send request to central server, this request is used for asking to update the whole network nodal information and IP storehouse information。
Step S404, it may be judged whether ask successfully。If it is judged that be yes, perform step S406；If it is judged that be no, perform step S410。
Step S406, it is judged that whether information has renewal。
Central server sends up-to-date the whole network nodal information and IP storehouse information to accelerating server。After accelerating up-to-date the whole network nodal information and the IP storehouse information that server receives central server transmission, it is judged that whether the whole network nodal information and IP storehouse information have renewal。If it is judged that be yes, perform step S408；If it is judged that be no, perform step S410。
Step S408, updates nodal information and IP storehouse information。
When accelerating server and judging that the whole network nodal information and IP storehouse information have renewal, accelerating server by locally stored the whole network nodal information and the information updating of IP storehouse is up-to-date the whole network nodal information of sending of the central server that receives and IP storehouse information。
Step S410, timed task sets next time。
Alternatively, after central server response inquiry request sends IP storehouse and the whole network nodal information to acceleration server, method also includes: accelerates server and judges whether terminal to be detected；When accelerating server and judging to exist terminal to be detected, send detection information to terminal to be detected；Accelerate server and receive the response message that terminal to be detected sends；Judge whether to detect successfully according to response message；Under detecting successful situation, calculate the transmission parameter accelerated between server and terminal to be detected。
Response message is sent by terminal to be detected, is used for responding and accelerates the detection information that server sends。Accelerate the response message that server waits that terminal to be detected sends。If the time of wait-for-response exceedes preset duration, then it is assumed that detect unsuccessful, namely terminal to be detected can not arrive。If the time of wait-for-response is less than preset duration, then it is assumed that detect successfully, now, the transmission parameter accelerated between server and terminal is calculated。
Fig. 5 is that the server that accelerates according to embodiments of the present invention treats the flow chart of the method that detecting terminal is detected。As it is shown in figure 5, the method comprises the following steps:
Step S502, it is judged that whether this locality exists non-detecting customer terminal IP。That is, accelerate server and judge whether this locality exists non-detecting customer terminal IP。If it is judged that be yes, perform step S504；If it is judged that be no, perform step S516。
Step S504, extracts client ip to be detected。That is, the information such as the client ip that the extraction of acceleration server to be detected。
Step S506, initiates detection, records current time, and opens dynamic overtime timer。Detection mode according to configuration, accelerates server and builds even to client ip initiation TCP to be detected or send PING bag。
Step S508, wait-for-response。That is, accelerate server and wait the response of client。
Step S510, it may be judged whether time-out。That is, the time-out time arranged according to dynamic overtime timer, accelerates server and judges that whether the response of client is overtime。If it is judged that be yes, perform step S514；If it is judged that be no, perform step S512。
Step S512, calculates corresponding value according to the transmission parameter of configuration, such as calculating RTT and packet loss, and more new data table。Accelerate server according to receiving the time of response message, previously recorded detection time started and the packet drop that client sends, calculate and update RTT value and packet loss。
Step S514, update detection result RTT are-1 (namely unreachable)。When accelerating the response timeout that server judges client, the value of RTT is set to-1, represents that this client cannot connect。
Step S516, next time timing probe task setting。
Fig. 6 is the flow chart that acceleration server according to embodiments of the present invention uploads the method for new detection data to central server。As shown in Figure 6, the method comprises the following steps:
Step S602, checks local detection data table。That is, accelerate server and check local detection data (i.e. the tables of data of above-mentioned transmission parameter)。
Step S604, it may be judged whether there is new detection data。That is, accelerate server and judge whether new detection data。If it is judged that be yes, perform step S606；If it is judged that be no, terminate。
Step S606, uploads new detection data。That is, accelerate server and upload new detection data to central server。
Step S608, central server receives new detection data and updates local data。That is, central server receives and accelerates the new detection data uploaded of server and update the detection data of storage in central server。
Fig. 7 is the flow chart that the method covering configuration node of optimum determined by central server according to embodiments of the present invention。As it is shown in fig. 7, the method comprises the following steps:
Step S702, checks the detection data that this locality is collected。
Step S704, it may be judged whether there is new detection data。If it is judged that be yes, perform step S706；If it is judged that be no, perform step S714。
Step S706, calculates optimum covering access point according to Dijkstra scheduling algorithm。The central server transmission parameter rule (such as RTT value, packet loss and accounting thereof etc.) according to configuration, the optimal path algorithm (such as dijkstra's algorithm) adopting configuration is calculated, and the optimum calculating each area client covers access-in point information。The optimum access point that covers is the acceleration server (namely above-mentioned target accelerates server) on the path instigating the transmission range between client and source server the shortest。
Step S708, it may be judged whether have new optimum to cover configuration information and produce。The optimum calculated is covered access-in point information and original covering access-in point information relative analysis by central server, it may be judged whether has new optimum to cover configuration information and produces。If it is judged that be yes, perform step S710；If it is judged that be no, perform step S714。
Step S710, updates optimum and covers configuration information table。Central server updates the optimum of storage in local data base and covers configuration information table after judging to have new optimum to cover configuration information generation。The optimum configuration information table that covers includes the mark of client and the mark of target acceleration server。
Step S712, calling interface is handed down to dns server。That is, new optimum is covered configuration information table and is handed down to dns server by central server calling interface。
Step S714, timed task sets next time。
Alternatively, central server using in path corresponding for most short transmission distance accelerate the target acceleration server that server accesses as target terminal after, method also includes: central server sends target to dns server and accelerates the mark of server, so that dns server controls target terminal and accesses target acceleration server。
It can be that target accelerates the IP of server, title etc. that target accelerates the mark of server, each target is accelerated server and is had unique mark, dns server is according to this unique identifier lookup and determines target acceleration server, thus completing dns server control target terminal to receive the acceleration server of the target corresponding to mark of target acceleration server。
Fig. 8 is the flow chart of the method for the optimum overlay node of dns server scheduling according to embodiments of the present invention。As shown in Figure 8, the method comprises the following steps:
Step S802, checks that the optimum received covers configuration information table。After new optimum covering configuration information table is handed down to dns server by central authorities' server calls interface, dns server checks that the optimum received covers configuration information table。
Step S804, it may be judged whether there is new coverage information。That is, existing coverage information is analyzed by dns server with the new coverage information just received, it may be judged whether there is new coverage information。If it is judged that be yes, perform step S806；If it is judged that be no, terminate。
Step S806, revises DNSMAP information table。When dns server judges to exist new coverage information, the DNSMAP information table of dns server amendment self。
Step S808, issues dispatch command, and switching adjusts and covers。Dns server issues dispatch command, automatically adjusts the covering access point in variation area。That is, target terminal is accessed target and accelerates server。
Step S810, timed task sets next time。
Fig. 9 is the flow chart of the optional method accessing network according to embodiments of the present invention。As it is shown in figure 9, the method comprises the following steps:
Step S902, the service node that accelerates of global network actively initiates the quality detection to Lastmile, and result of detection is uploaded to central server, meanwhile, collects record in the IP address of client, forms IP storehouse。
Step S904, the Lastmile result of detection that acceleration service node is uploaded by central server is calculated according to cloud dispatching algorithm, draw the covering access-in point information of optimum, and by result of calculation (optimum covering access-in point information) by configuring interface, carry out issuing adjustment and cover configuration。
Wherein, central server is constant to this section of Routing Algorithm and the handling process of fringe node to source station, simply the routing result of detection of Lastmile is also added in Routing Algorithm fringe node (namely accelerating server)。
Step S906, result of calculation is issued to dns server by central server, and the dns server optimum to receiving covers result and resolves, and automatically adjusts optimum access point。That is, target terminal is accessed target and accelerates server。
Step S908, adopts the pattern of map to carry out region overlay node time delay and packet loss is shown。User so can be made to visualize, understand the optimum coverage situation in each region intuitively。
According to embodiments of the present invention, a kind of central server is additionally provided。This central server can perform the method for above-mentioned access network, and the method for above-mentioned access network can also be implemented by this central server。
Figure 10 is the schematic diagram of the composition structure of the central server provided according to embodiments of the present invention。As shown in Figure 10, this central server includes: the first acquiring unit 10, second acquisition unit 20, select unit 30 and determine unit 40。
First acquiring unit 10, accelerates the first transmission range of server, and obtains target terminal and the second transmission range of the second acceleration server for obtaining target terminal and first。
Second acquisition unit 20, for obtaining the 3rd transmission range of the first acceleration server and source server, and obtains the 4th transmission range of the second acceleration server and source server。
Select unit 30, for selecting most short transmission distance from the first transmission range and the 3rd transmission range sum, the second transmission range and the 4th transmission range sum。
Determine unit 40, for path corresponding for most short transmission distance accelerating the target acceleration server that server accesses as target terminal。
By obtaining the different transmission ranges accelerated between server and terminal, the transmission range accelerated between server and terminal and the transmission range accelerated between server and source server are sued for peace, find out most short transmission distance, and then find path corresponding to most short transmission distance, path corresponding for most short transmission distance will accelerate the acceleration server that server accesses as terminal, owing to considering, when selecting transmission path, the transmission range accelerated between server and terminal, it is thus possible to the optimal path obtained between source server and terminal, the path selected when solving accessing terminal to network in prior art is not the technical problem of optimal path, reach to determine the technique effect of optimal path when by accessing terminal to network。
It should be noted that the transmission range in the embodiment of the present invention can adopt the transmission time to weigh, path corresponding to most short transmission distance can be the path of transmission shortest time。
The execution process of the method accessing network that the embodiment of the present invention provides relates to four class hardware: central server, acceleration service node (i.e. above-mentioned acceleration server), source station (i.e. above-mentioned source server) and dns server。
The effect of central server is: the transmission parameter (such as: RTT and packet loss) between last one kilometer (namely accelerating the path between server and the terminal) result of detection being responsible for providing the whole network node (i.e. above-mentioned acceleration service node) information, upload according to each node in the whole network, node and between source station calculates optimal path, it is provided that optimal path information is downloaded and issued with last one kilometer data access point tuning result。Containing above-mentioned target in optimal path information and accelerate server, the server of last one kilometer data access point instruction is target and accelerates server。
Accelerating service node is the component units of data transfer path, accelerates service node and is responsible for the transmission of customer data, carries out between node and the timing probe of source station, active and upload result of detection in real time and download optimal path information。
The effect of source station is: accelerating server to each provides data, and the data that source station provides are transferred to the terminal that self covers by each acceleration server。
The effect of dns server is: receives optimal path information and last one kilometer data access dot information that central server sends, and updates local DNSMAP information, to control target terminal access target acceleration server。
Alternatively, the first acquiring unit 10 includes the first acquisition subelement and the second acquisition subelement。First obtains subelement, for obtaining the first transmission parameter that target terminal and first accelerates between server, and obtain the second transmission parameter that target terminal and second accelerates between server, wherein, first transmission parameter is accelerated server by first and is detected and report central server, and the second transmission parameter is accelerated server by second and detected and report central server。Second obtains subelement, for transmitting parameter acquiring the first transmission range according to first, and transmits parameter acquiring the second transmission range according to second。
Source server, the first acceleration server and target terminal constitute a transmission paths, and source server, the second acceleration server and target terminal constitute another transmission paths。First parameter accelerating the data transmission between server and target terminal is the first transmission parameter。Second parameter accelerating the data transmission between server and target terminal is the second transmission parameter。
First the first transmission parameter accelerating the data transmission between server detection the first acceleration server and target terminal, and transmit reporting parameters by first to central server。Second the second transmission parameter accelerating the data transmission between server detection the second acceleration server and target terminal, and transmit reporting parameters by second to central server。
Central server transmits parameter acquiring first according to first and accelerates the first transmission range between server and target terminal, and accelerates the second transmission range between server and target terminal according to the second transmission parameter acquiring second。
The transmission range in the transmission path of source server, acceleration server and target terminal composition can adopt below equation to be calculated:
Source server, the transmission range=source server accelerating the transmission path of server and target terminal composition and the transmission range of transmission range+between acceleration server and target terminal accelerated between server。
Transmission range=the first transmission range+the three transmission range in the transmission path of source server, the first acceleration server and target terminal composition。
Transmission range=the second transmission range+the four transmission range in the transmission path of source server, the second acceleration server and target terminal composition。
From the side that the first transmission range and the 3rd transmission range sum and the second transmission range are less with selection both the 4th transmission range sums, as most short transmission distance。
When accelerating the quantity of server more than two, then compare between two according to said method, find out most short transmission distance。
Path corresponding for most short transmission distance will accelerate the target acceleration server that server accesses as target terminal。
When most short transmission distance be source server, first accelerate the transmission range in transmission path of server and target terminal composition time, accelerate the target acceleration server that server accesses as target terminal using first。
When most short transmission distance be source server, second accelerate the transmission range in transmission path of server and target terminal composition time, accelerate the target acceleration server that server accesses as target terminal using second。
Alternatively, the second acquisition subelement includes judge module and acquisition module。Judge module, is used for judging whether to receive the first transmission parameter and the second transmission parameter。Acquisition module, for when judge module judges to receive the first transmission parameter and the second transmission parameter, transmitting parameter acquiring the first transmission range according to first, and transmit parameter acquiring the second transmission range according to second。
Transmission parameter can be RTT, packet loss etc.。Accelerate server terminal is detected, obtain transmission parameter。Accelerating server and will transmit reporting parameters to central server, central server, according to the transmission parameter received, calculates the transmission range accelerated between server and terminal。
Central server stores the tables of data of transmission parameter, when the tables of data that transmission parameter judged by central server has renewal, namely judges to receive the first transmission parameter and the second transmission parameter。
Alternatively, central server also includes receiving unit and the first transmitting element。Receive unit, parameter acquiring the first transmission range is transmitted according to first for obtaining subelement second, and before transmitting parameter acquiring the second transmission range according to second, receive and accelerate the inquiry request that server sends, inquiry request is for the IP storehouse in requesting query central server, wherein, IP stock contain have been coupled to central server terminal in a network。First transmitting element, is used for responding inquiry request and sends IP storehouse to accelerating server, so that accelerating server to identify target terminal to be detected。
Accelerating server and send inquiry request to central server, inquiry request is for the IP storehouse in requesting query central server。Central server response inquiry request sends IP storehouse to accelerating server。Accelerate server and receive IP storehouse, identify target terminal to be detected according to the information in IP storehouse。Wherein, in IP storehouse storage and accelerate the terminal that server local do not store and be target terminal。
Alternatively, central server also includes the second transmitting element。Second transmitting element, for determine unit 40 using in path corresponding for most short transmission distance accelerate the target acceleration server that server accesses as target terminal after, send target to dns server and accelerate the mark of server, so that dns server controls target terminal and accesses target acceleration server。
It can be that target accelerates the IP of server, title etc. that target accelerates the mark of server, each target is accelerated server and is had unique mark, dns server is according to this unique identifier lookup and determines target acceleration server, thus completing dns server control target terminal to receive the acceleration server of the target corresponding to mark of target acceleration server。
Above-mentioned the embodiment of the present application sequence number, just to describing, does not represent the quality of embodiment。
In above-described embodiment of the application, the description of each embodiment is all emphasized particularly on different fields, certain embodiment there is no the part described in detail, it is possible to referring to the associated description of other embodiments。
In several embodiments provided herein, it should be understood that disclosed technology contents, can realize by another way。Wherein, device embodiment described above is merely schematic, the such as division of described unit, can be that a kind of logic function divides, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or be desirably integrated into another system, or some features can be ignored, or does not perform。Another point, shown or discussed coupling each other or direct-coupling or communication connection can be through INDIRECT COUPLING or the communication connection of some interfaces, unit or module, it is possible to be electrical or other form。
The described unit illustrated as separating component can be or may not be physically separate, and the parts shown as unit can be or may not be physical location, namely may be located at a place, or can also be distributed on multiple unit。Some or all of unit therein can be selected according to the actual needs to realize the purpose of the present embodiment scheme。
It addition, each functional unit in each embodiment of the application can be integrated in a processing unit, it is also possible to be that unit is individually physically present, it is also possible to two or more unit are integrated in a unit。Above-mentioned integrated unit both can adopt the form of hardware to realize, it would however also be possible to employ the form of SFU software functional unit realizes。
If described integrated unit is using the form realization of SFU software functional unit and as independent production marketing or use, it is possible to be stored in a computer read/write memory medium。Based on such understanding, part or all or part of of this technical scheme that prior art is contributed by the technical scheme of the application substantially in other words can embody with the form of software product, this computer software product is stored in a storage medium, including some instructions with so that a computer equipment (can for personal computer, server or the network equipment etc.) performs all or part of step of method described in each embodiment of the application。And aforesaid storage medium includes: USB flash disk, read only memory (ROM, Read-OnlyMemory), the various media that can store program code such as random access memory (RAM, RandomAccessMemory), portable hard drive, magnetic disc or CD。
The above is only the preferred implementation of the application; it should be pointed out that, for those skilled in the art, under the premise without departing from the application principle; can also making some improvements and modifications, these improvements and modifications also should be regarded as the protection domain of the application。
Claims (11)
1. the method accessing network, it is characterised in that including:
Central server obtains target terminal and first and accelerates the first transmission range of server, and obtains described target terminal and the second transmission range of the second acceleration server；
Described central server obtains the described first the 3rd transmission range accelerating server and source server, and obtains the described second the 4th transmission range accelerating server and described source server；
Described central server selects most short transmission distance from described first transmission range and described 3rd transmission range sum, described second transmission range and described 4th transmission range sum；
The target that server accesses as described target terminal of accelerating in path corresponding for described most short transmission distance is accelerated server by described central server。
2. method according to claim 1, it is characterised in that described central server obtains target terminal and first and accelerates the first transmission range of server, and the second transmission range obtaining described target terminal and the second acceleration server includes:
Described central server obtains the first transmission parameter that described target terminal and described first accelerates between server, and obtain the second transmission parameter that described target terminal and described second accelerates between server, wherein, described first transmission parameter is accelerated server by described first and is detected and report described central server, and described second transmission parameter is accelerated server by described second and detected and report described central server；
Described central server transmits the first transmission range described in parameter acquiring according to described first, and transmits the second transmission range described in parameter acquiring according to described second。
3. method according to claim 2, it is characterised in that described central server transmits the first transmission range described in parameter acquiring according to described first, and the second transmission range according to described second transmission parameter acquiring includes:
Described central server judges whether to receive described first transmission parameter and described second transmission parameter；
Described central server, when judging to receive described first transmission parameter and described second transmission parameter, transmits the first transmission range described in parameter acquiring according to described first, and transmits the second transmission range described in parameter acquiring according to described second。
4. method according to claim 2, it is characterised in that transmit the first transmission range described in parameter acquiring at described central server according to described first, and before the second transmission range according to described second transmission parameter acquiring, described method also includes:
Described central server receives the inquiry request that described acceleration server sends, and described inquiry request is for the IP storehouse in central server described in requesting query, wherein, described IP stock contain have been coupled to described central server terminal in a network；
Described central server responds described inquiry request and sends described IP storehouse to described acceleration server, so that described acceleration server identifies described target terminal to be detected。
5. method according to claim 4, it is characterised in that after the described central server described inquiry request of response sends described IP storehouse to described acceleration server, described method also includes:
Described acceleration server judges whether terminal to be detected；
When described acceleration server judges to exist terminal to be detected, send detection information to described terminal to be detected；
Described acceleration server receives the response message that described terminal to be detected sends；
Described acceleration server judges whether to detect successfully according to described response message；
Under detecting successful situation, described acceleration server calculates the transmission parameter between described acceleration server and described terminal to be detected。
6. method according to claim 1, it is characterised in that will accelerating after the target that server accesses as described target terminal accelerates server in path corresponding for described most short transmission distance at described central server, described method also includes:
Described central server sends described target to dns server and accelerates the mark of server, so that described dns server controls described target terminal and accesses described target acceleration server。
7. a central server, it is characterised in that including:
First acquiring unit, accelerates the first transmission range of server, and obtains described target terminal and the second transmission range of the second acceleration server for obtaining target terminal and first；
Second acquisition unit, for obtaining the described first the 3rd transmission range accelerating server and source server, and obtains the described second the 4th transmission range accelerating server and described source server；
Select unit, for selecting most short transmission distance from described first transmission range and described 3rd transmission range sum, described second transmission range and described 4th transmission range sum；
Determine unit, for the target that server accesses as described target terminal of accelerating in path corresponding for described most short transmission distance is accelerated server。
8. central server according to claim 7, it is characterised in that described first acquiring unit includes:
First obtains subelement, for obtaining the first transmission parameter that described target terminal and described first accelerates between server, and obtain the second transmission parameter that described target terminal and described second accelerates between server, wherein, described first transmission parameter is accelerated server by described first and is detected and report described central server, and described second transmission parameter is accelerated server by described second and detected and report described central server；
Second obtains subelement, for transmitting the first transmission range described in parameter acquiring according to described first, and transmits the second transmission range described in parameter acquiring according to described second。
9. central server according to claim 8, it is characterised in that described second obtains subelement includes:
Judge module, is used for judging whether to receive described first transmission parameter and described second transmission parameter；
Acquisition module, for when described judge module judges to receive described first transmission parameter and described second transmission parameter, transmit the first transmission range described in parameter acquiring according to described first, and transmit the second transmission range described in parameter acquiring according to described second。
10. central server according to claim 8, it is characterised in that described central server also includes:
Receive unit, the first transmission range described in parameter acquiring is transmitted according to described first for obtaining subelement described second, and before transmitting the second transmission range described in parameter acquiring according to described second, receive the inquiry request that described acceleration server sends, IP storehouse in described inquiry request central server described in requesting query, wherein, described IP stock contain have been coupled to described central server terminal in a network；
First transmitting element, is used for responding described inquiry request and sends described IP storehouse to described acceleration server, so that described acceleration server identifies described target terminal to be detected。
11. central server according to claim 7, it is characterised in that described central server also includes:
Second transmitting element, for determining that unit will accelerate after the target that server accesses as described target terminal accelerates server in path corresponding for described most short transmission distance described, send described target to dns server and accelerate the mark of server, so that described dns server controls described target terminal and accesses described target acceleration server。
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