CN103051709A - Data transmission path determination method, network node and content delivery network system - Google Patents
Data transmission path determination method, network node and content delivery network system Download PDFInfo
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Abstract
The invention discloses a data transmission path determination method, a network node and a content delivery network system. The method comprises the following steps of: transmitting a detection request message to each network node to be detected by using a detection network node in a content delivery network; receiving a detection response message from each network node to be detected after the network nodes to be detected receive the detection request messages, wherein each detection response message carries round-trip time delay from the corresponding network node to be detected to a bound network node bound with a source station server in the content delivery network; determining round-trip time delay from the detection network node to each network node to be detected according to the corresponding received detection response message; and selecting a transmission path with a minimum transmission delay as a transmission path from the detection network node to the source station server from transmission paths corresponding to the network nodes to be detected respectively. According to the scheme, the data transmission efficiency can be improved by determining the data transmission path with the minimum transmission delay.
Description
Technical field
The present invention relates to Internet technical field, relate in particular to a kind of data transfer path and determine method, network node and content distribution network system.
Background technology
Along with increasing of Internet service and user, it is more and more crowded that network becomes gradually, and data transmission efficiency is more and more lower, thereby have a strong impact on user's experience.In order to address this problem, content distributing network (Content Delivery Network has appearred, CDN) technology, the main feature of CDN is with (the Internet Server Provider of ISP, ISP) content backup that provides in network edge device, thereby can shorten the distance of user and service, reduce the consumption of bandwidth, improve data transmission efficiency, and network utilization.
At present, mostly the network delay in the transfer of data is and procotol that the signal transmission is relevant with the disposal ability of the network equipment, and the CDN technology namely is the scheme that solves this several respects problem.
The CDN technology is divided into dynamic acceleration and two kinds of technology of static acceleration, the static state that is mostly of generally using is at present accelerated, namely dispose the CDN node at the edge of network, when having the user to ask a certain service, the CDN system is by GSLB (Global Server Load Balance, GSLB) strategy is directed to the user apart from its nearest CDN node, and this node is responsible for the request of process user.If the content of user's request has backup and effective at this node, the content of backup is issued this user, otherwise, this node can proxy user be obtained the content that the user asks to other nodes or source station server, be transmitted to again the user, finish the processing of current request, simultaneously, arrive the content caching of specifically request local, if follow-up have same request to arrive again, namely can directly reply, save the consumption of Hui Yuan, and improved treatment effeciency, thereby strengthened user's experience.
And for some contents that dynamically generate or the data of frequent updating, such content can not buffer memory at the CND node, even because buffer memory, can't guarantee that also the data of institute's buffer memory are effective when request arrives next time.Need to take the method dynamically accelerated this moment, dynamically acceleration can be by optimizing agreement, and compressed transmission data is taked the mode such as corresponding measure to realize, and also had incremental transmission etc. for special content.
At present, in order to improve transmission speed, shorten time of delay, proposed a kind of dynamic speeding scheme by the optimized transmission path, in this dynamic speeding scheme, the path of each CDN fringe node Hui Yuan is to be assisted to finish by the center of CDN system.The CDN center can preferentially be selected several intermediate nodes (generally being to select two) and distribute to the CDN fringe node, so just formed the path of selectable many Hui Yuan, to distribute two CDN intermediate nodes as example, the path of Hui Yuan comprises three, article one, be that the CDN fringe node arrives first CDN intermediate node again to source station server (essence is for arriving the CDN node of binding with the source station server), second is that CDN fringe node to the second a CDN intermediate node is again to the source station server, article three, be that the CDN fringe node is directly to the source station server, the CDN fringe node is to source station server the transmission of data the time, can from the path of these many Hui Yuan, select a delay the shortest, as data transfer path, in order to reduce as much as possible data transfer delay.
In the dynamic speeding scheme of above-mentioned CDN, to distribute the CDN intermediate node by the CDN center for each CDN fringe node, this just needs the CDN center to understand whole CDN nodes among the CDN and the link condition between the CDN node, and can be so that the CDN intermediate node is reasonably distributed at the CDN center when being private line between the CDN node.Yet, in some actual internet environments, may there be a plurality of ISP, and transfer of data often need to be through not only ISP, and the data transfer delay of striding ISP is larger, and packet loss rascal rate is higher in the transmission course, when in such internet environment, disposing CDN, between the CDN node not being is private line, and owing to there are a plurality of ISP, also be difficult to so that the link condition between whole CDN nodes and the CDN node is understood at the CDN center, so, in such internet environment, be difficult to use the dynamic speeding scheme of above-mentioned CDN, also just so that the data transmission efficiency in such internet environment is lower.
Summary of the invention
The embodiment of the invention provides a kind of data transfer path to determine method, network node and content distribution network system, in order to solve exist in the prior art owing to can't determine that more excellent data transfer path causes the lower problem of data transmission efficiency.
The embodiment of the invention provides a kind of data transfer path to determine method, comprising:
Detection network node in the content distributing network sends the probe requests thereby message to each network node to be detected, and network node to be detected is other network node except described detection network node in the described content distributing network;
Receive described each network node to be detected and receiving the detection response message that returns respectively behind the described probe requests thereby message, carry in the detection response message network node to be detected in the described content distributing network with the round-trip delay of the binding network node of source station server binding;
Determine that according to the described detection response message that receives described detection network node divides the round-trip delay that is clipped to described each network node to be detected;
Divide the round-trip delay that is clipped to described each network node to be detected based on the described detection network node of determining, and described each network node to be detected divides the round-trip delay that is clipped to described binding network node, from each transmission path corresponding with described each network node difference to be detected, the transmission path of determining the transmission delay minimum is that described detection network node is to the transmission path between the server of described source station.
The embodiment of the invention also provides a kind of data transfer path to determine method, comprising:
Network node to be detected in the content distributing network receives the probe requests thereby message that the detection network node sends;
Return detection response message to described detection network node, be used for the described detection network node of described detection network node determination to the round-trip delay of described network node to be detected, carry in the described detection response message described network node to be detected in the described content distributing network with the round-trip delay of the binding network node of source station server binding.
The embodiment of the invention also provides a kind of detection network node, is arranged in content distributing network, comprising:
Transmitting element is used for sending the probe requests thereby message to each network node to be detected, and network node to be detected is other network node except described detection network node in the described content distributing network;
Receiving element, be used for receiving described each network node to be detected and receiving the detection response message that returns respectively behind the described probe requests thereby message, carry in the detection response message network node to be detected in the described content distributing network with the round-trip delay of the binding network node of source station server binding;
The time delay determining unit is used for determining that according to the described detection response message that receives described detection network node divides the round-trip delay that is clipped to described each network node to be detected;
The path determining unit, be used for dividing the round-trip delay that is clipped to described each network node to be detected based on the described detection network node of determining, and described each network node to be detected divides the round-trip delay that is clipped to described binding network node, from each transmission path corresponding with described each network node difference to be detected, the transmission path of determining the transmission delay minimum is that described detection network node is to the transmission path between the server of described source station.
The embodiment of the invention also provides a kind of network node to be detected, is arranged in content distributing network, comprising:
Receiving element is used for receiving the probe requests thereby message that the detection network node sends;
Transmitting element, be used for returning detection response message to described detection network node, be used for the described detection network node of described detection network node determination to the round-trip delay of described network node to be detected, carry in the described detection response message described network node to be detected in the described content distributing network with the round-trip delay of the binding network node of source station server binding.
The embodiment of the invention also provides a kind of content distribution network system, comprising: detection network node and a plurality of network node to be detected, wherein:
Described detection network node is used for sending the probe requests thereby message to each network node to be detected; And receive described each network node to be detected and receiving the detection response message that returns respectively behind the described probe requests thereby message; And determine that according to the described detection response message that receives described detection network node divides the round-trip delay that is clipped to described each network node to be detected; And divide the round-trip delay that is clipped to described each network node to be detected based on the described detection network node of determining, and described each network node to be detected divides the round-trip delay that is clipped to described binding network node, from each transmission path corresponding with described each network node difference to be detected, the transmission path of determining the transmission delay minimum is that described detection network node is to the transmission path between the server of described source station;
Described network node to be detected is used for receiving the probe requests thereby message that described detection network node sends; And return described detection response message to described detection network node, carry in the detection response message network node to be detected in the described content distributing network with the round-trip delay of the binding network node of source station server binding.
Beneficial effect of the present invention comprises:
In the method that the embodiment of the invention provides, network node in the content distributing network is when determining self to the data transfer path between the server of source station, self is sent the probe requests thereby message as the detection network node to each network node to be detected in the content distributing network, and receive each network node to be detected and receiving the detection response message that returns respectively behind the probe requests thereby message, and determine that according to the detection response message that receives the detection network node divides the round-trip delay that is clipped to each network node to be detected, and carry the round-trip delay that network node to be detected arrives the binding network node of binding with the source station server in the detection response message, thereby so that the detection network node can be known the round-trip delay situation that self arrives each the bar data transfer path between the binding network node, and then can therefrom select the transmission path of a transmission delay minimum, as the transmission path of detection network node between the server of source station, so that the transmission path data by selected transmission delay minimum, in order to improve data transmission efficiency.
The application's further feature and advantage will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the application.The application's purpose and other advantages can realize and obtain by specifically noted structure in the specification of writing, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide a further understanding of the present invention, and consists of the part of specification, is used from explanation the present invention with the embodiment of the invention one, is not construed as limiting the invention.In the accompanying drawings:
The data transfer path that is applied to the detection network node that Fig. 1 provides for the embodiment of the invention is determined the flow chart of method;
The data transfer path that is applied to network node to be detected that Fig. 2 provides for the embodiment of the invention is determined the flow chart of method;
Fig. 3 is provided for the data transfer path that provides in the embodiment of the invention 1 by the flow chart of method;
The result schematic diagram of the detection network node that provides in the embodiment of the invention 2 is provided Fig. 4;
The result schematic diagram of the network node to be detected that provides in the embodiment of the invention 3 is provided Fig. 5;
The structural representation of the content distributing network that provides in the embodiment of the invention 4 is provided Fig. 6.
Embodiment
In order to provide by determining that thereby more excellent data transfer path improves the implementation of data transmission efficiency, the embodiment of the invention provides a kind of data transfer path to determine method, network node and content distribution network system, below in conjunction with Figure of description the preferred embodiments of the present invention are described, be to be understood that, preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.And in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
The embodiment of the invention provides a kind of data transfer path to determine method, is applied to initiate in the content distributing network network node of detection, and the follow-up network node that will initiate to survey is called the detection network node, as shown in Figure 1, comprising:
Detection network node in step 101, the content distributing network sends the probe requests thereby message to each network node to be detected, and network node to be detected is other network node except the detection network node in the content distributing network.
Accordingly, the embodiment of the invention also provides a kind of data transfer path to determine method, is applied to network node to be detected in the content distributing network, as shown in Figure 2, comprising:
Network node to be detected in step 201, the content distributing network receives the probe requests thereby message that the detection network node sends.
Below in conjunction with accompanying drawing, with specific embodiment the method that the embodiment of the invention provides is described in detail.
Embodiment 1:
In the embodiment of the invention, comprise a plurality of network nodes in the content distributing network, relation between a plurality of network nodes is equality, wherein, some network nodes can be bound with the source station server, and as source station bonding network circuit node, the source station server can carry out data interaction by binding network node and the content distributing network of self binding, a source station server can be bound a network node, also can bind a plurality of network nodes.
When user terminal need to be to source station server request content, can send request to the source station server by content distributing network, specifically can be by the nearer network node of distance users terminal, by the binding network node, request is transmitted to the source station server, and the request content that returns based on same transmission path reception sources site server, and request content is transmitted to this user terminal.
Because in the content distributing network, a network node arrives a transmission path of binding network node of binding with the source station server can be had a plurality of, so, in order to improve data transmission efficiency, need to from many transmission paths, select a transmission path that transmission delay is less.
Namely propose a kind of data transfer path in the embodiment of the invention 1 and determine method, be used for selecting a more excellent transmission path from many transmission paths, wherein, the network node of initiating in the content distributing network to survey is called the detection network node, other network node except the detection network node is called network node to be detected, each network node is all carried out the method as the detection network node, to determine that self is to the transmission path between the server of source station, simultaneously also return detection response message as network node to be detected to other network node, its concrete handling process comprises following treatment step as shown in Figure 3:
Step 301, detection network node send the probe requests thereby message to each network node to be detected in the content distributing network, be used for determining that self is to round-trip delay (the Round-Trip Time of the network node to be detected that receives this probe requests thereby message, RTT), and ask this network node to be detected to the round-trip delay of the binding network node of source station server binding.
In the embodiment of the invention, information that can pre-configured other network node on each network node, for example, the IP address, port information, and whether this network node be the binding network node with the binding of source station server, and with the source station server info of this network node binding etc.Accordingly, in this step, the detection network node can send the probe requests thereby message based on the information of other pre-configured network node.
Further, in the embodiment of the invention, each network node can comprise two ports, a port can be used for carrying out the detection of transmission path, namely be used for transmission probe requests thereby message and detection response message, another port can be used for the transmission of data, and is corresponding, and the detection network node namely can pass through first port of self to first port transmission probe requests thereby message of network node to be detected in this step.
Further, the detection network node is in the probe requests thereby message of network node transmission to be detected in this step, can carry the information that this surveys corresponding assigned source site server, what be used to indicate this probe requests thereby is that network node to be detected is to the round-trip delay of this assigned source site server, also can not carry the information of source station server, be used for asking network node to be detected to divide and be clipped to the round-trip delay of all source station servers of accessing content distributing network.
In the embodiment of the invention 1, each network node can periodically send the probe requests thereby message as the detection network node, so that self is to the optimal transmission paths between the server of source station in time discovery and the update content distributing network.
Preferably, the detection network node is after startup, can send respectively the probe requests thereby message of predetermined number to each network node to be detected, for example send the probe requests thereby message three times, in order to can determine fast that self is to the optimal transmission paths between the server of source station.
Preferably, this step can also be to trigger when current and this detection network node carry out the network node failure of transfer of data in determining content distributing network to carry out, in order to can upgrade fast self to the optimal transmission paths between the server of source station;
Can also be that current the triggering when being identified the probe requests thereby message that the network node that is in malfunction sends carried out in receiving content distributing network, owing to received the current probe requests thereby message that is identified the network node transmission that is in malfunction, represent that current this network node that is in malfunction that is identified has recovered normal operating conditions, start the path this moment and survey in order to can upgrade fast self to the optimal transmission paths between the server of source station.
Step 302, network node to be detected are behind the probe requests thereby message that receives this detection network node transmission, return detection response message to this detection network node, and carry the round-trip delay that this network node to be detected arrives the binding network node of binding with the source station server in this detection response message.
In this step, this network node to be detected is to the round-trip delay of binding network node, can be that this network node to be detected is determined as the detection network node and by sending the probe requests thereby message to this binding network node, when this network node to be detected self is the binding network node, can in detection response message, carry numerical value and be 0 round-trip delay, also can be by sign in detection response message self for the binding network node, to represent that this round-trip delay is as 0.
When not carrying the information of this assigned source site server of surveying correspondence in the probe requests thereby message that receives, this network node to be detected can in the detection response message that returns, carry at present fixed self to the round-trip delay of the binding network node of binding respectively with each source station server, and the information of a source station server of a round-trip delay correspondence; When carrying the information of this assigned source site server of surveying correspondence in the probe requests thereby message that receives, this network node to be detected only carries the round-trip delay that self arrives the binding network node of binding with this assigned source site server and gets final product in the detection response message that returns.
Further, in this step, in order so that this detection network node of this detection network node determination arrives the round-trip delay of this network node to be detected, can also in the detection response message that returns, to carry the time of reception when receiving this probe requests thereby message.
In this step, this network node to be detected self arrives the round-trip delay of binding network node for current the unknown, can adopt a pre-configured larger value to replace, so that the subsequent probe network node can not adopt self as transmission path, also can carry a null value, represent the current the unknown of this round-trip delay.
Step 303, this detection network node are determined this detection network node to the round-trip delay of the network node to be detected that returns this detection response message according to this detection response message that receives after receiving detection response message, specifically can be in the following way:
First kind of way: according to the transmitting time that sends the probe requests thereby message and the time of reception that receives detection response message, determine that this detection network node is to the round-trip delay of the network node to be detected that returns this detection response message.
The second way: when carrying this network node to be detected in the detection response message and receive the time of reception of probe requests thereby message, can also be according to this time of reception that carries in the detection response message, determine that this detection network node is to the round-trip delay of the network node to be detected that returns this detection response message, for example, this round-trip delay can be 2 times of duration of the transmitting time that sends the probe requests thereby message and this time of reception that carries.
Can also adopt the mode of other various definite round-trip delays of the prior art in this step, no longer be described in detail at this.
Step 304, this detection network node after receiving detection response message, the network node to be detected of also determining to return this detection response message to the round-trip delay of the binding network node of source station server binding.
In this step, this detection network node can directly obtain the round-trip delay that carries from the detection response message that receives, also can be according to this network node to be detected of ten-four of self other pre-configured network node during for the binding network node, determine that this round-trip delay is 0.
There is not strict sequencing between this step 304 and the above-mentioned steps 303.
Step 305, when this detection network node after network node to be detected executes above-mentioned steps 303 and step 304 for each, perhaps after sending the probe requests thereby message through after the default duration, can divide the round-trip delay that is clipped to each network node to be detected based on the detection network node of determining, and each network node to be detected divides the round-trip delay that is clipped to the binding network node of binding with the source station server, from each transmission path corresponding with each network node difference to be detected, the transmission path of determining the transmission delay minimum is that this detection network node is to the transmission path between this source station server.
Concrete, can be successively for each network node to be detected, determine this detection network node to the round-trip delay of this network node to be detected and this network node to be detected to the round-trip delay of binding network node and value, therefrom selection minimum and network node to be detected corresponding to value, and definite this detection network node to the transmission path between this source station server is: this detection network node arrives network node to be detected minimum and that value is corresponding and arrives the binding network node of binding with this source station server; When this network node to be detected minimum and that value is corresponding is the binding network node of binding with this source station server, can determine that this detection network node to the transmission path between this source station server is: this detection network node is to this network node to be detected minimum and that value is corresponding, the binding network node of namely binding with this source station server.
Step 306, this detection network node can be preserved the result after determining self transmission path between the server of source station with the form of mapping table, in order to follow-uply use when carrying out transfer of data, the content of this mapping table can be as shown in table 1:
Table 1
| The source station server | The next-hop network node | The binding network node |
| Source station server 1 | Network node A | Network node A |
| Source station server 2 | Network node B | Network node D |
| Source station server 3 | Network node C | Network node E |
In the table 1, when the next-hop network node represents to carry out transfer of data with the source station server, need to transmit by the next-hop network node corresponding with this source station server in the table, namely need data to be transmitted is sent to the next-hop network node.And, by the binding network node in the table 1, can also know that the next-hop network node after receiving data to be transmitted, is directly to be sent to this source station server, still arrive the source station server through once transmitting again.
By above-mentioned table 1 as can be known, in the embodiment of the invention, the data to be transmitted of a network node user terminal is sent to the source station server, can be through once transmitting, namely pass through the binding target node with this source station server binding, at most through twice forwarding, thereby satisfied the requirement that to transmit at most three times when present user terminal transfers data to the source station server by content distributing network.
Step 307, detection network node namely can be by the transmission of datas between this transmission path proxy user terminal and this source station server after the transmission path of determining self to arrive between the server of source station.
Because the round-trip delay by these transmission path data is the shortest, thereby can improve the efficient of transfer of data.
This step, in order further to improve the efficient of transfer of data, this detection network node can be set up self in advance to the connection between next-hop network node corresponding to the transmission path of each source station server, and each bar connection that will set up joins in the connection pool, also can be connect first and the transmission of data after, keep this connection, and this connection that will set up joins in the connection pool.
When this detection network node need to send data to the source station server, can from connection pool, obtain this detection network node of having set up to this source station server next-hop network node corresponding to this transmission path between connection, and this connection of having set up by obtaining, needs are sent to the data of this source station server, send to this next-hop network node, can also be by this connection of having set up, receive the data that this source station server that this next-hop network node transmits returns.
Owing to when the transmission of data, do not need to rebulid the connection between the network node, thereby saved the time that connects, and then further improved the efficient of transfer of data.When the character of transfer of data during for short the connection, namely the data volume of data to be transmitted is less, so that the time of transfer of data is compared the establishment of connection time hour, the effect that improves data transmission efficiency is better.
Embodiment 2:
Based on same inventive concept, determine method according to the data transfer path that is applied to the detection network node that the above embodiment of the present invention provides, correspondingly, the embodiment of the invention 2 also provides a kind of detection network node, be arranged in content distributing network, its structural representation specifically comprises as shown in Figure 4:
Transmitting element 401 is used for sending the probe requests thereby message to each network node to be detected, and network node to be detected is other network node except described detection network node in the described content distributing network;
Receiving element 402, be used for receiving described each network node to be detected and receiving the detection response message that returns respectively behind the described probe requests thereby message, carry in the detection response message network node to be detected in the described content distributing network with the round-trip delay of the binding network node of source station server binding;
Time delay determining unit 403 is used for determining that according to the described detection response message that receives described detection network node divides the round-trip delay that is clipped to described each network node to be detected;
Path determining unit 404, be used for dividing the round-trip delay that is clipped to described each network node to be detected based on the described detection network node of determining, and described each network node to be detected divides the round-trip delay that is clipped to described binding network node, from each transmission path corresponding with described each network node difference to be detected, the transmission path of determining the transmission delay minimum is that described detection network node is to the transmission path between the server of described source station.
Further, this detection network node also comprises:
Trigger element 405 is used for described transmitting element at the detection network node before network node to be detected sends the probe requests thereby message to each, determines that current and described detection network node in the described content distributing network carries out the network node failure of transfer of data; Perhaps receive the current probe requests thereby message that is identified the network node transmission that is in malfunction in the described content distributing network.
Further, transmitting element 401, concrete being used for sends respectively the probe requests thereby message of predetermined number to each network node to be detected after described detection network node startup.
Further, transmitting element 401 also is used for when needs during to described source station server transmission data, obtains the described detection network node set up to the connection next-hop network node corresponding to described transmission path from connection pool; And the described connection by obtaining, needs are sent to the data of described source station server, send to next-hop network node corresponding to described transmission path.
Embodiment 3:
Based on same inventive concept, determine method according to the data transfer path that is applied to network node to be detected that the above embodiment of the present invention provides, correspondingly, the embodiment of the invention 3 also provides a kind of network node to be detected, be arranged in content distributing network, its structural representation specifically comprises as shown in Figure 5:
Receiving element 501 is used for receiving the probe requests thereby message that the detection network node sends;
Transmitting element 502, be used for returning detection response message to described detection network node, be used for the described detection network node of described detection network node determination to the round-trip delay of described network node to be detected, carry in the described detection response message described network node to be detected in the described content distributing network with the round-trip delay of the binding network node of source station server binding.
Embodiment 4:
Based on same inventive concept, determine method according to the data transfer path that the above embodiment of the present invention provides, correspondingly, the embodiment of the invention 4 also provides a kind of content distribution network system, its structural representation as shown in Figure 6, specifically comprise: detection network node 601 and a plurality of network node to be detected 602, wherein:
Described detection network node 601 is used for sending the probe requests thereby message to each network node to be detected; And receive described each network node to be detected and receiving the detection response message that returns respectively behind the described probe requests thereby message; And determine that according to the described detection response message that receives described detection network node divides the round-trip delay that is clipped to described each network node to be detected; And divide the round-trip delay that is clipped to described each network node to be detected based on the described detection network node of determining, and described each network node to be detected divides the round-trip delay that is clipped to described binding network node, from each transmission path corresponding with described each network node difference to be detected, the transmission path of determining the transmission delay minimum is that described detection network node is to the transmission path between the server of described source station;
Described network node to be detected 602 is used for receiving the probe requests thereby message that described detection network node sends; And return described detection response message to described detection network node, carry in the detection response message network node to be detected in the described content distributing network with the round-trip delay of the binding network node of source station server binding.
The function of above-mentioned each unit can corresponding to the respective handling step of Fig. 1 to the flow process shown in Figure 3, not repeat them here.
In sum, the scheme that the embodiment of the invention provides, comprise: the detection network node in the content distributing network sends the probe requests thereby message to each network node to be detected, and network node to be detected is other network node except the detection network node in the content distributing network; And receive each network node to be detected and receiving the detection response message that returns respectively behind the probe requests thereby message, carry in the detection response message network node to be detected in the content distributing network with the round-trip delay of the binding network node of source station server binding; And determine that according to the detection response message that receives the detection network node divides the round-trip delay that is clipped to each network node to be detected; And divide the round-trip delay that is clipped to each network node to be detected based on the detection network node of determining, and each network node to be detected divides the round-trip delay that is clipped to bonding network network node, from each transmission path corresponding with each network node difference to be detected, the transmission path of determining the transmission delay minimum is that the detection network node is to the transmission path between the server of source station.The scheme that adopts the embodiment of the invention to provide can improve data transmission efficiency by the data transfer path of determining the transmission delay minimum.
The function of the network node that the application's embodiment provides can realize by computer program.Those skilled in the art should be understood that; above-mentioned Module Division mode only is a kind of in numerous Module Division modes; if be divided into other modules or do not divide module, as long as network node has above-mentioned functions, all should be within the application's protection range.
The application is that reference is described according to flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the present application.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device producing a machine, so that the instruction of carrying out by the processor of computer or other programmable data processing device produces the device of the function that is used for being implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, so that the instruction that is stored in this computer-readable memory produces the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, so that carry out the sequence of operations step producing computer implemented processing at computer or other programmable devices, thereby be provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame in the instruction that computer or other programmable devices are carried out.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1. a data transfer path is determined method, it is characterized in that, comprising:
Detection network node in the content distributing network sends the probe requests thereby message to each network node to be detected, and network node to be detected is other network node except described detection network node in the described content distributing network;
Receive described each network node to be detected and receiving the detection response message that returns respectively behind the described probe requests thereby message, carry in the detection response message network node to be detected in the described content distributing network with the round-trip delay of the binding network node of source station server binding;
Determine that according to the described detection response message that receives described detection network node divides the round-trip delay that is clipped to described each network node to be detected;
Divide the round-trip delay that is clipped to described each network node to be detected based on the described detection network node of determining, and described each network node to be detected divides the round-trip delay that is clipped to described binding network node, from each transmission path corresponding with described each network node difference to be detected, the transmission path of determining the transmission delay minimum is that described detection network node is to the transmission path between the server of described source station.
2. the method for claim 1 is characterized in that, before the network node transmission probe requests thereby message to be detected, also comprises at the detection network node to each:
Determine that current and described detection network node in the described content distributing network carries out the network node failure of transfer of data; Perhaps
Receive the current probe requests thereby message that is identified the network node transmission that is in malfunction in the described content distributing network.
3. the method for claim 1 is characterized in that, the detection network node sends the probe requests thereby message to each network node to be detected, specifically comprises:
The detection network node sends respectively the probe requests thereby message of predetermined number to each network node to be detected after startup.
4. such as the arbitrary described method of claim 1-3, it is characterized in that, determining that described detection network node after the transmission path between the server of described source station, also comprises:
When needs send data to described source station server, from connection pool, obtain the described detection network node set up to the connection next-hop network node corresponding to described transmission path;
By the described connection of obtaining, needs are sent to the data of described source station server, send to next-hop network node corresponding to described transmission path.
5. a data transfer path is determined method, it is characterized in that, comprising:
Network node to be detected in the content distributing network receives the probe requests thereby message that the detection network node sends;
Return detection response message to described detection network node, be used for the described detection network node of described detection network node determination to the round-trip delay of described network node to be detected, carry in the described detection response message described network node to be detected in the described content distributing network with the round-trip delay of the binding network node of source station server binding.
6. a detection network node is arranged in content distributing network, it is characterized in that, comprising:
Transmitting element is used for sending the probe requests thereby message to each network node to be detected, and network node to be detected is other network node except described detection network node in the described content distributing network;
Receiving element, be used for receiving described each network node to be detected and receiving the detection response message that returns respectively behind the described probe requests thereby message, carry in the detection response message network node to be detected in the described content distributing network with the round-trip delay of the binding network node of source station server binding;
The time delay determining unit is used for determining that according to the described detection response message that receives described detection network node divides the round-trip delay that is clipped to described each network node to be detected;
The path determining unit, be used for dividing the round-trip delay that is clipped to described each network node to be detected based on the described detection network node of determining, and described each network node to be detected divides the round-trip delay that is clipped to described binding network node, from each transmission path corresponding with described each network node difference to be detected, the transmission path of determining the transmission delay minimum is that described detection network node is to the transmission path between the server of described source station.
7. detection network node as claimed in claim 6 is characterized in that, also comprises:
Trigger element is used for described transmitting element at the detection network node before network node to be detected sends the probe requests thereby message to each, determines that current and described detection network node in the described content distributing network carries out the network node failure of transfer of data; Perhaps receive the current probe requests thereby message that is identified the network node transmission that is in malfunction in the described content distributing network.
8. detection network node as claimed in claim 6 is characterized in that, described transmitting element, and concrete being used for sends respectively the probe requests thereby message of predetermined number to each network node to be detected after described detection network node startup.
9. such as the arbitrary described detection network node of claim 6-8, it is characterized in that, described transmitting element, also be used for when needs during to described source station server transmission data, from connection pool, obtain the described detection network node set up to the connection next-hop network node corresponding to described transmission path; And the described connection by obtaining, needs are sent to the data of described source station server, send to next-hop network node corresponding to described transmission path.
10. a network node to be detected is arranged in content distributing network, it is characterized in that, comprising:
Receiving element is used for receiving the probe requests thereby message that the detection network node sends;
Transmitting element, be used for returning detection response message to described detection network node, be used for the described detection network node of described detection network node determination to the round-trip delay of described network node to be detected, carry in the described detection response message described network node to be detected in the described content distributing network with the round-trip delay of the binding network node of source station server binding.
11. a content distribution network system is characterized in that, comprising: detection network node and a plurality of network node to be detected, wherein:
Described detection network node is used for sending the probe requests thereby message to each network node to be detected; And receive described each network node to be detected and receiving the detection response message that returns respectively behind the described probe requests thereby message; And determine that according to the described detection response message that receives described detection network node divides the round-trip delay that is clipped to described each network node to be detected; And divide the round-trip delay that is clipped to described each network node to be detected based on the described detection network node of determining, and described each network node to be detected divides the round-trip delay that is clipped to described binding network node, from each transmission path corresponding with described each network node difference to be detected, the transmission path of determining the transmission delay minimum is that described detection network node is to the transmission path between the server of described source station;
Described network node to be detected is used for receiving the probe requests thereby message that described detection network node sends; And return described detection response message to described detection network node, carry in the detection response message network node to be detected in the described content distributing network with the round-trip delay of the binding network node of source station server binding.
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| CN115022293A (en) * | 2022-08-04 | 2022-09-06 | 苏州华兴源创科技股份有限公司 | Multichannel resource allocation method and device, computer equipment and storage medium |
| CN115022293B (en) * | 2022-08-04 | 2022-11-04 | 苏州华兴源创科技股份有限公司 | Multichannel resource allocation method and device, computer equipment and storage medium |
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Application publication date: 20130417 |