CN110071942A - Networking live streaming stream distributing method, device and the storage medium of digit broadcasting system - Google Patents
Networking live streaming stream distributing method, device and the storage medium of digit broadcasting system Download PDFInfo
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- CN110071942A CN110071942A CN201910419780.6A CN201910419780A CN110071942A CN 110071942 A CN110071942 A CN 110071942A CN 201910419780 A CN201910419780 A CN 201910419780A CN 110071942 A CN110071942 A CN 110071942A
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- node
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- live stream
- nat
- file
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
- H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/104—Peer-to-peer [P2P] networks
Abstract
Digit broadcasting system, including the forwarding stream media server for live stream, broadcasting equipment and client are disposed in P2P networking and live stream and document distribution method the invention discloses a kind of digit broadcasting system;It allows broadcasting equipment to establish point-to-point interconnection using NAT through-transmission technique, the broadcasting equipment in system is set up into P2P distribution network by tree structure, the distribution of stream and file is broadcast live by the distribution network.The hierarchical structure that the P2P distribution network is two layers or two layers or more, including server layer, root node level, child node layer, wherein, root node in root node level obtains live stream or file from the server in server layer, and the node of other child node layers obtains live stream or file from father node by the P2P connection between node and node.Broadcasting equipment utilizes the distribution of P2P network implementations live stream and file, reduces the broadcasting equipment quantity for directly obtaining data from server, the computer room bandwidth demand of extensive broadcast system Internet-based is effectively reduced.
Description
Technical field
The present invention relates to the data service technical field of the communications field more particularly to a kind of P2P groups of digit broadcasting system
Net and live stream and document distribution method, device and storage medium.
Background technique
After live streaming in digit broadcasting system refers to that a kind of real-time audio broadcasting, audio collecting device acquire real-time audio
By network transmission to various broadcasting equipments, and the broadcast that amplifies is carried out by broadcasting equipment.
File distributing in digit broadcasting system refers to that the audio file of server end is passed through network transmission to respectively by system
Kind broadcasting equipment, plays audio file by broadcasting equipment at the time of appropriate.
When being broadcast live with file distributing, bandwidth demand and the broadcast of server are set current general digit broadcasting system
Standby quantity is directly proportional, and the total bandwidth that server needs meets formula: B=N*b, B are total bandwidth need, and N is broadcasting equipment quantity,
B is the bandwidth that each broadcasting equipment is broadcast live or when file download needs.It is broadcast live server rate of discharge and meets formula:
F=N*b*t, F are total flow, and N is broadcasting equipment quantity, and b is live streaming stream bit rates, and t is live streaming duration.Carry out file distributing clothes
Business device rate of discharge meets formula: F=N*S, F are total flow, and N is broadcasting equipment quantity, and S is file size.
A kind of solution for live streaming is to reduce each broadcasting equipment using the audio coding formats of more high compression rate
The bandwidth needed.The shortcomings that this method is to reduce sound quality, and cannot fundamentally solve terminal scale and rise bring
Bandwidth cost pressure.Another kind is that broadcasting equipment is allowed to download file in batches for the solution of file distributing, is reduced at present
The number of devices of load.The shortcomings that this method is the total duration that will increase file distributing to armamentarium, and server general export
Flow is constant.
Summary of the invention
The present invention is directed at least solve the technical problems existing in the prior art.For this purpose, the invention discloses a kind of numbers
The P2P networking of broadcast system and live stream and document distribution method dispose digit broadcasting system, including for live stream
Forwarding stream media server, broadcasting equipment and client;Broadcasting equipment is allowed to establish point-to-point (P2P) using NAT through-transmission technique mutual
Even, the broadcasting equipment in system is set up into P2P distribution network (distribution tree) by tree structure, is carried out by the distribution network
The distribution of live stream and file.
Preferably, the hierarchical structure that the P2P distribution network is two layers or two layers or more, including server layer, root node
Layer, child node layer, wherein the root node in root node level obtains live stream or file from the server in server layer, other
The node of child node layer obtains live stream or file from father node by the P2P connection between node and node.
Preferably, broadcasting equipment preferentially uses P2P connection to obtain live stream or file from father node, when P2P connection is abnormal
When can be switched to from server and obtain live stream or file.
Preferably, broadcasting equipment has NAT type detection function and network bandwidth detection function, and server is set according to broadcast
Standby NAT type, network bandwidth construct distribution tree.
Preferably, the distribution tree constructing method includes:
Step 401: when new node reports NAT type and network bandwidth, existing in non-fully distribution tree or isolated node
It is N number of whether asymmetric form NAT node number is greater than, then continues step 402, otherwise exit;
Step 402: to new node and non-fully on distribution tree all nodes or all isolated nodes by whether symmetric form
It is two classes that NAT, which is divided to, is sorted to asymmetric form NAT node by network bandwidth;
Step 403: if asymmetric form NAT node be less than it is N number of if exit, otherwise select network bandwidth maximum N number of asymmetric
Type NAT node is as root node;
Step 404: remaining asymmetric form NAT node is successively added according to the descending sequence of meshed network bandwidth
Into distribution tree, chooses distribution tree child nodes number and be less than M, and the maximum N number of node of network bandwidth is saved as its father
Point;
Step 405: symmetric NAT node being successively added in distribution tree, distribution tree child nodes number is chosen and is less than M
It is a, and the maximum N number of asymmetric node of network bandwidth is as its father node, when distribution tree is complete distribution tree or is looked for
When less than suitable father node, remaining symmetric NAT node is put into isolated node pond;
Step 406: sending a message to all nodes in distribution tree, inform its newest parent information;Node, which receives, to disappear
P2P is established with specified father node after breath to connect.
Preferably, father node number N is a, and child node number M is greater than father node number N.
It preferably, is that father node forms node group according to 3 nodes, a node group is connect with 12 child nodes, building 5
The distribution tree of layer.
The present invention further discloses a kind of electronic devices, comprising:
Processor;And
Memory, for storing the executable instruction of the processor;
Wherein, the processor is configured to execute digital broadcasting system as described above via the executable instruction is executed
The P2P networking of system and live stream and document distribution method.
The present invention further discloses a kind of computer readable storage mediums, are stored thereon with computer program, the meter
The P2P networking and live streaming of the described in any item digit broadcasting systems of claim 1-7 are realized when calculation machine program is executed by processor
Stream and document distribution method.
The present invention constructs P2P distribution tree by carrying out P2P networking to the equipment in broadcast system.Distribute net using P2P
Network, broadcasting equipment can obtain live stream or file from other broadcasting equipments, reduce server bandwidth demand, reduce server and go out
Mouth flow.Meanwhile broadcasting equipment utilizes the distribution of P2P network implementations live stream and file, reduces and directly obtains number from server
According to broadcasting equipment quantity, reduce the bandwidth pressure and flow cost of server.The present invention can be effectively reduced Internet-based
The computer room bandwidth demand of extensive broadcast system, saves the bandwidth expense of system operation.
Detailed description of the invention
From following description with reference to the accompanying drawings it will be further appreciated that the present invention.Component in figure is not drawn necessarily to scale,
But it focuses on and shows in the principle of embodiment.In the figure in different views, identical appended drawing reference is specified to be corresponded to
Part.
Fig. 1 is the structural schematic diagram of the distribution tree in one embodiment of the invention;
Fig. 2 is the structural schematic diagram of the distribution tree in another embodiment of the present invention;
Fig. 3 is the structural schematic diagram of the distribution tree in another embodiment of the present invention;
Fig. 4 is the flow chart of the distribution tree constructing method in one embodiment of the invention;
Fig. 5 is the relational graph of 5 layers of distribution tree node and the number of plies of the invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that the described embodiments are only some of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.It needs to illustrate
, the detailed description illustrated in conjunction with attached drawing is intended as the description to various configurations, wherein can be real without being intended to indicate that
Trample unique configuration of concepts described herein.Installation practice and embodiment of the method documented by herein will be following detailed
It is described in thin description, and passes through various frames, module, unit, component, circuit, step, process, algorithm etc. in the accompanying drawings
(be referred to as " element ") is shown.These elements can be used electronic hardware, computer software or any combination thereof and come
It realizes.It is implemented as hardware or software as these elements, depending on specific application and the design being applied on total system
Constraint.If the term in description and claims of this specification and Figure of description uses " first ", " second " etc.
Description, this kind description is not use to describe a particular order for distinguishing different objects.
It should be appreciated that ought use in this specification and in the appended claims, term " includes " and "comprising" instruction
Described feature, entirety, step, operation, the presence of element and/or component, but one or more of the other feature, whole is not precluded
Body, step, operation, the presence or addition of element, component and/or its set.It is also understood that the institute in this description of the invention
The term used is merely for the sake of being not intended to limit the present invention for the purpose of describing particular embodiments.Such as in description of the invention
With it is used in the attached claims like that, other situations unless the context is clearly specified, otherwise singular
" one ", "one" and "the" are intended to include plural form.It will be further appreciated that being wanted in description of the invention and appended right
Term "and/or" used in book is asked to refer to any combination and all possibility of one or more of associated item listed
Combination, and including these combinations.
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
In subsequent description, it is only using the suffix for indicating such as " module ", " component " or " unit " of element
Be conducive to explanation of the invention, itself there is no a specific meaning.Therefore, " module ", " component " or " unit " can mix
Ground uses.
Client can be implemented in a variety of manners.For example, terminal described in the present invention may include such as mobile phone, put down
It is plate computer, laptop, palm PC, personal digital assistant (Personal Digital Assistant, PDA), convenient
Formula media player (Portable Media Player, PMP), navigation device, wearable device, Intelligent bracelet, pedometer etc.
The fixed terminals such as mobile terminal, and number TV, desktop computer.
Embodiment one
The present invention allows broadcasting equipment to establish point-to-point interconnection (Peer-to-Peer, abbreviation P2P) using NAT through-transmission technique,
Broadcasting equipment in system is set up into P2P distribution network by tree structure.It is known as P2P points with the distribution network that tree structure is set up
Hair tree, broadcasting equipment are known as node.The root node of P2P distribution tree obtains live stream from server or file, other nodes then lead to
The P2P connection crossed between node and node obtains live stream or file from father node.
Three nodes form a node group in distribution tree, and a node group connects 12 child nodes.Such as Fig. 1 (Fig. 2) institute
Show, node 1, node 2, node 3 are root node, and node 4 to node 15 is all established with node 1, node 2, node 3 respectively respectively
P2P connection.
Distribution tree can form two layers or more of hierarchical structure, as shown in Figure 3.Root node 1,2,3 obtains straight from server
Stream or file are broadcast, other nodes obtain live stream or file by P2P connection from father node.
Each node connects 3 father nodes and may be implemented to go out during it obtains live stream or file from 1 higher level
The abnormal conditions such as existing P2P connection disconnection, it can switch to another father node and continues to obtain live stream or file.When node with
When the P2P connection of all father nodes all disconnects, it automatically switches to from server and obtains live stream or file.
By NAT Type division are as follows: full cone NAT, the constrained NAT in address, port restricted type NAT, symmetric NAT.Two
The NAT type of a node is all symmetric NAT, and the success rate that P2P connection is established between them is relatively low, and has in two nodes
The success rate that P2P connection is established as soon as the NAT type of side is not symmetric NAT, between them is relatively high.Therefore building distribution
The node connection of two symmetric NATs should be avoided the occurrence of when tree as far as possible.The section of symmetric NAT type in distribution tree in the present invention
Point can only be used as child node, to guarantee that two symmetric NAT nodes will not be allowed to establish P2P connection mutually.
Broadcasting equipment has a NAT type detection function and network bandwidth detection function, and server is according to the NAT of broadcasting equipment
Type, network bandwidth construct distribution tree.It is as shown in Figure 4 that distribution tree constructs process.
401: when new node reports NAT type and network bandwidth, there is non-fully distribution tree, (complete distribution tree is defined as:
5 layers altogether, non-root node all connects three father nodes, and non-leaf nodes all connects 12 child nodes) or isolated node in it is non-
Whether symmetric NAT node number is greater than 3, then continues 402, otherwise exit.
402: to new node and non-fully on distribution tree, all nodes or all isolated nodes press whether symmetric NAT divides
For two classes.It sorts to asymmetric form NAT node by network bandwidth.
403: being exited if asymmetric form NAT node is less than 3, otherwise select the maximum 3 asymmetric form NAT sections of network bandwidth
Point is used as root node.
404: to remaining asymmetric form NAT node, according to the descending sequence of meshed network bandwidth, being successively added to point
In hair tree, distribution tree child nodes number is chosen less than 12, and maximum 3 nodes of network bandwidth are as its father node.
405: symmetric NAT node is successively added in distribution tree, chooses distribution tree child nodes number less than 12, and
Father node of the maximum 3 asymmetric nodes of network bandwidth as it.When distribution tree for complete distribution tree or can not find conjunction
When suitable father node, remaining symmetric NAT node is put into isolated node pond.
406: sending a message to all nodes in distribution tree, inform its newest parent information.After node receives message
P2P is established with specified father node to connect.
Embodiment two
In the present embodiment, broadcasting equipment has NAT type detection, bandwidth detection ability, and can be reported to server.System
System establishes distribution tree according to NAT type, the network bandwidth data of node, realizes P2P networking.
Broadcasting equipment connects 3 father nodes, 12 child nodes in distribution tree species.Server can send message informing node
The specified father node of connection.
Broadcasting equipment is established P2P with father node by NAT through-transmission technique and is connect.Broadcasting equipment is straight using P2P network implementations
The distribution of stream and file is broadcast, the broadcasting equipment quantity for directly obtaining data from server is reduced, reduces the bandwidth pressure of server
And flow cost.
Broadcasting equipment preferentially uses P2P connection to obtain live stream or file from father node, can cut when P2P connection is abnormal
It changes to from server and obtains live stream or file.
Embodiment three
A kind of P2P networking of digit broadcasting system and live stream and document distribution method, dispose digit broadcasting system, wherein
Including the forwarding stream media server for live stream, broadcasting equipment and client;Broadcasting equipment is allowed to build using NAT through-transmission technique
Point-to-point (P2P) interconnection is stood, the broadcasting equipment in system is set up into P2P distribution network (distribution tree) by tree structure, passes through institute
The distribution network stated is broadcast live the distribution of stream and file.
Preferably, the hierarchical structure that the P2P distribution network is two layers or two layers or more, including server layer, root node
Layer, child node layer, wherein the root node in root node level obtains live stream or file from the server in server layer, other
The node of child node layer obtains live stream or file from father node by the P2P connection between node and node.
Preferably, broadcasting equipment preferentially uses P2P connection to obtain live stream or file from father node, when P2P connection is abnormal
When can be switched to from server and obtain live stream or file.
Preferably, broadcasting equipment has NAT type detection function and network bandwidth detection function, and server is set according to broadcast
Standby NAT type, network bandwidth construct distribution tree.
Preferably, the distribution tree constructing method includes:
Step 401: when new node reports NAT type and network bandwidth, existing in non-fully distribution tree or isolated node
It is N number of whether asymmetric form NAT node number is greater than, then continues step 402, otherwise exit;
Step 402: to new node and non-fully on distribution tree all nodes or all isolated nodes by whether symmetric form
It is two classes that NAT, which is divided to, is sorted to asymmetric form NAT node by network bandwidth;
Step 403: if asymmetric form NAT node be less than it is N number of if exit, otherwise select network bandwidth maximum N number of asymmetric
Type NAT node is as root node;
Step 404: remaining asymmetric form NAT node is successively added according to the descending sequence of meshed network bandwidth
Into distribution tree, chooses distribution tree child nodes number and be less than M, and the maximum N number of node of network bandwidth is saved as its father
Point;
Step 405: symmetric NAT node being successively added in distribution tree, distribution tree child nodes number is chosen and is less than M
It is a, and the maximum N number of asymmetric node of network bandwidth is as its father node, when distribution tree is complete distribution tree or is looked for
When less than suitable father node, remaining symmetric NAT node is put into isolated node pond;
Step 406: sending a message to all nodes in distribution tree, inform its newest parent information;Node, which receives, to disappear
P2P is established with specified father node after breath to connect.
Preferably, father node number N is a, and child node number M is greater than father node number N.
It preferably, is that father node forms node group according to 3 nodes, a node group is connect with 12 child nodes, building 5
The distribution tree of layer.
The present embodiment also discloses a kind of electronic device, comprising:
Processor;And
Memory, for storing the executable instruction of the processor;
Wherein, the processor is configured to execute digital broadcasting system as described above via the executable instruction is executed
The P2P networking of system and live stream and document distribution method.
The present embodiment further discloses a kind of computer readable storage medium, is stored thereon with computer program, described
The P2P networking of the described in any item digit broadcasting systems of claim 1-7 and straight is realized when computer program is executed by processor
Broadcast stream and document distribution method.
Method as described in the embodiment, the computer room bandwidth that extensive broadcast system Internet-based can be effectively reduced need
It asks, saves the bandwidth expense of system operation.
Example IV
Node group is formed according to 3 nodes, a node group is connect with 12 child nodes, the distribution tree of 5 layers of building.Every layer
Number of nodes is as shown in figure 5, a total of 1023 nodes of a distribution tree, when being broadcast live simultaneously to nodes all on distribution tree,
Only three nodes of first layer obtain live stream from server.Relatively other broadcast system bandwidth conservations: (1023-3)/1023
=99.7%.
Therefore, the computer room bandwidth demand of extensive broadcast system Internet-based can be effectively reduced in the present embodiment, save
The bandwidth expense of system operation.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want
There is also other identical elements in the process, method of element, commodity or equipment.
It will be understood by those skilled in the art that embodiments herein can provide as method, system or computer program product.
Therefore, complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the application
Form.It is deposited moreover, the application can be used to can be used in the computer that one or more wherein includes computer usable program code
The shape for the computer program product implemented on storage media (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Formula.
Although describing the present invention by reference to various embodiments above, but it is to be understood that of the invention not departing from
In the case where range, many changes and modifications can be carried out.Therefore, be intended to foregoing detailed description be considered as it is illustrative and
It is unrestricted, and it is to be understood that following following claims (including all equivalents) is intended to limit spirit and model of the invention
It encloses.The above embodiment is interpreted as being merely to illustrate the present invention rather than limit the scope of the invention.It is reading
After the content of record of the invention, technical staff can be made various changes or modifications the present invention, these equivalence changes and
Modification equally falls into the scope of the claims in the present invention.
Claims (9)
1. a kind of P2P networking of digit broadcasting system and live stream and document distribution method, which is characterized in that deployment digital broadcasting
System, including the forwarding stream media server for live stream, broadcasting equipment and client;It is allowed using NAT through-transmission technique
Broadcasting equipment establishes point-to-point (P2P) interconnection, and the broadcasting equipment in system is set up the (distribution of P2P distribution network by tree structure
Tree), the distribution of stream and file is broadcast live by the distribution network.
2. a kind of P2P networking of digit broadcasting system as described in claim 1 and live stream and document distribution method, feature
It is, the hierarchical structure that the P2P distribution network is two layers or two layers or more, including server layer, root node level, child node
Layer, wherein the root node in root node level obtains live stream or file from the server in server layer, other child node layers
Node obtains live stream or file from father node by the P2P connection between node and node.
3. a kind of P2P networking of digit broadcasting system as claimed in claim 2 and live stream and document distribution method, feature
It is, broadcasting equipment preferentially uses P2P connection to obtain live stream or file from father node, can switch when P2P connection is abnormal
Live stream or file are obtained to from server.
4. a kind of P2P networking of digit broadcasting system as claimed in claim 3 and live stream and document distribution method, feature
It is, broadcasting equipment has a NAT type detection function and network bandwidth detection function, and server is according to the NAT class of broadcasting equipment
Type, network bandwidth construct distribution tree.
5. a kind of P2P networking of digit broadcasting system as claimed in claim 4 and live stream and document distribution method, feature
It is, the distribution tree constructing method includes:
Step 401: when new node reports NAT type and network bandwidth, it is non-right in non-fully distribution tree or isolated node to exist
It is N number of whether title type NAT node number is greater than, then continues step 402, otherwise exit;
Step 402: to new node and non-fully on distribution tree, all nodes or all isolated nodes press whether symmetric NAT divides
For two classes, sort to asymmetric form NAT node by network bandwidth;
Step 403: if asymmetric form NAT node be less than it is N number of if exit, otherwise select the maximum N number of asymmetric form NAT of network bandwidth
Node is as root node;
Step 404: to remaining asymmetric form NAT node, according to the descending sequence of meshed network bandwidth, being successively added to point
In hair tree, chooses distribution tree child nodes number and be less than M, and the maximum N number of node of network bandwidth is as its father node;
Step 405: symmetric NAT node is successively added in distribution tree, chooses distribution tree child nodes number less than M, and
And the maximum N number of asymmetric node of network bandwidth is as its father node, when distribution tree is complete distribution tree or be can not find
When suitable father node, remaining symmetric NAT node is put into isolated node pond;
Step 406: sending a message to all nodes in distribution tree, inform its newest parent information;After node receives message
P2P is established with specified father node to connect.
6. a kind of P2P networking of digit broadcasting system as claimed in claim 5 and live stream and document distribution method, feature
Be, father node number N be it is a, child node number M be greater than father node number N.
7. a kind of P2P networking of digit broadcasting system as claimed in claim 5 and live stream and document distribution method, feature
It is, is that father node forms node group according to 3 nodes, a node group is connect with 12 child nodes, the distribution of 5 layers of building
Tree.
8. a kind of electronic device characterized by comprising
Processor;And
Memory, for storing the executable instruction of the processor;
Wherein, the processor is configured to require 1-7 described in any item via executing the executable instruction and carry out perform claim
The P2P networking of digit broadcasting system and live stream and document distribution method.
9. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program quilt
The P2P networking of the realization described in any item digit broadcasting systems of claim 1-7 and live stream and file point when processor executes
Forwarding method.
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CN1604569A (en) * | 2004-10-29 | 2005-04-06 | 清华大学 | A robust point to point based stream scheduling method |
CN101127619A (en) * | 2007-09-29 | 2008-02-20 | 华中科技大学 | A P2P living broadcast method based on super node |
CN101959054A (en) * | 2009-07-14 | 2011-01-26 | 中国电信股份有限公司 | Integrated P2P (Peer-To-Peer) VOD (Video-On-Demand) system and partner node selecting method |
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