CN101075954A - Point-to-point fluid-medium telecommunication system and method for allocating supernode resources - Google Patents
Point-to-point fluid-medium telecommunication system and method for allocating supernode resources Download PDFInfo
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Abstract
The system comprises: source servers, node server, supper node (SP), client side and proxy server. The invention is used for managing all source server and supper node, dynamically allocating the SP resources to the stream media programs according to the actual connection state of the stream media program and the network resource state of SP, and informing the program information and SP resource to the node server and its corresponding SP. The method comprises: a) getting the actual connection state of each currently-used SP resource and the stream media program; b) according to the actual connection state of the SP resource and stream media program, configuring the SP resource for the dedicated stream media program, and using the configured SP resources to provide service for the dedicated stream media.
Description
Technical field
The present invention relates to the internet communication technology, relate in particular to the collocation method of point-to-point Streaming Media communication system and super node (SP) resource thereof.
Background technology
Present point-to-point Streaming Media mechanics of communication has been applied in internet arena in large quantities, for numerous netizens provide abundant streaming media service.The user can watch TV programme or the listening to audio program of oneself liking by point-to-point Streaming Media communication.
Prior art one:
Fig. 1 is the structure chart of the point-to-point Streaming Media communication system of prior art one.Referring to Fig. 1, this system comprises:
The source server of Streaming Media (Source Server) is used to provide flow-medium performance (abbreviating flow-medium performance as program herein) corresponding primary flow media data, and will issue programme information and report to node server (Peer Server).
Node server is used to manage all source servers, super node (Super Peer) and client (Client).
Super node is some network conditions clients preferably, is picked out as super-peer by node server, is used for obtaining the primary flow media data of program from source server and being transmitted to other client.
The normal client end is the stream medium data that common node and super node and other client are obtained program alternately.
In the prior art one, SP is provided specially by the service provider, selects in the multi-client bandwidth resources qualified as SP but comformed by node server.Client is given node server with the network bandwidth, network type, network address translation (nat) type of oneself, the report information such as speed of uploading and downloading, then by node server according to certain strategy select network condition preferably client as SP, node server sends configuration file for selected SP, comprising: the corresponding information such as service linking number of distributing of programme information (certain program identification) and each program.After node server receives the program list information of program source, program list information is issued SP, SP obtains the initial data of this program from source server, the configuration file of sending according to node server connects for this program distribution service, and the service that utilization is distributed connects the data to this program of distribution on the internet.
The shortcoming of prior art one is:
1, has very big randomness, whether have the client that can be used as SP of specific quantity in can't the prediction system,, then can't realize the distribution of program if all online client all do not meet the requirement as SP.
2, owing to adopt client as SP, and the life period of client can't be predicted, so do not have can stable existence SP, when the client as SP rolls off the production line, when disconnecting it with being connected of system, those clients that rely on this SP to obtain data just need be searched the SP that can obtain data again, thereby cause whole system to have very big fluctuation, influence the efficient of client receiving stream media data.
3, since with client as SP, and necessarily require as the client of SP can the access originator server, so source server must enter the Internet (Internet), the service of the direct source of exposure server of so external meeting causes source server to be attacked easily and causes safety problem.
4, can't promptly listen to or watch situation according to the actual connection state of program, carry out distributing rationally of SP resource, cause program distribution unreasonable, the SP utilization of resources is insufficient.
Prior art two:
Fig. 2 is the structure chart of the point-to-point Streaming Media communication system of prior art two.Referring to Fig. 2, this system comprises:
Source server is used to provide the primary flow media data of program correspondence, and will issue programme information and report to node server.
Node server is used to manage all source servers, super node and client (being ordinary node).
SP, different with prior art one, this SP stablizes server by the high bandwidth that the service provider provides specially, is used for obtaining the primary flow media data of program from source server and being transmitted to other client.
Client, promptly common node is used for obtaining alternately with SP and other client the stream medium data of program.
In prior art two, the high-bandwidth service device that use service side provides is as SP, reliable and stable, the result of use ratio is selected client will be well very as SP, but when disposing, these SP the relevant information of service program need be filled in the local configuration file, comprise in the configuration file: programme information (certain program identification), with the corresponding information such as service linking number of distributing of each program, after node server receives the program list information of program source, program list information is issued SP, SP obtains the primary flow media data of this program from program source, for this program distribution service connects, utilize the service that is distributed to connect according to configuration file to the data of distributing this program on the internet.
But, the shortcoming of prior art two is: the configuration file on the SP is rule of thumb manual in advance to prepare, so it is different with actual situation possibility, can't carry out distributing rationally of SP resource according to the actual connection state of program, cause program distribution unreasonable, the SP utilization of resources is insufficient, and for example the SP resource of some popular program possible configuration is less, and some unexpected winner program may dispose morely.And the configuration of revising SP also needs manual mode, and operation maintenance is brought a lot of troubles.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of point-to-point Streaming Media communication system, can optimize the configuration of SP resource, improves the utilance of SP resource, improves the play quality of program.
Another object of the present invention is to provide a kind of collocation method of point-to-point Streaming Media communication system SP resource, can optimize the configuration of SP resource, improve the utilance of SP resource, improve the play quality of program.
In order to realize the foregoing invention purpose, main technical schemes of the present invention is:
A kind of point-to-point Streaming Media communication system, this system comprises: source server, node server, super node SP, client; This system further comprises acting server, wherein:
Source server is used to provide the primary flow media data of flow-medium performance correspondence, and flow-medium performance information is distributed to acting server;
Acting server is used to manage all source servers and super node, obtain the actual connection situation of flow-medium performance from node server, obtain the resource information of SP, Internet resources situation according to the actual connection situation of flow-medium performance and SP is given flow-medium performance dynamic assignment SP resource, with flow-medium performance information be that the SP resource notification of its distribution is given node server and is the SP of this flow-medium performance distribution;
Node server is used for managing all clients from the flow-medium performance information of acting server reception sources server and the resource information of SP, and the actual connection situation of flow-medium performance is provided to acting server;
SP is used for obtaining the primary flow media data of flow-medium performance and being transmitted to client from source server according to the dynamic-configuration of acting server;
Client is used for by obtaining the data of flow-medium performance alternately with SP and other client.
A kind of collocation method of point-to-point Streaming Media communication system SP resource, this method comprises:
The actual situation that is connected of A, the resource information of obtaining current each SP in the described communication system and flow-medium performance;
The SP resource information that B, combination are obtained and the actual situation that is connected of flow-medium performance are specific flow-medium performance configuration SP resource, and the SP resource that utilization is disposed provides service for the specific flow-medium performance of correspondence.
Preferably, this method further comprises: dynamic-configuration pattern or static configuration pattern information are set in described communication system; When being set to the dynamic-configuration pattern, disposing the SP resource and service is provided according to described steps A and step B; When being set to the static configuration pattern, disposing the SP resource and service is provided according to the manual configuration file that is provided with.
Preferably, the resource information of described SP comprises at least: operator's type information of SP place network, SP type information, bandwidth information, link information.
Preferably, this method further comprises, when point-to-point Streaming Media communication system initial start, according to default initial configuration file for flow-medium performance configuration SP resource and utilize this SP resource that service is provided.
Preferably, the information that comprises in the described initial configuration file is: the minimum linking number of the average bandwidth of the type of SP and quantity, each program, each program, the maximum number of connections of each program; The default initial configuration file of described basis disposes the SP resource and utilizes this SP resource to provide the concrete grammar of service to be for flow-medium performance:
According to the flow-medium performance information of being issued, above-mentioned initial configuration file information and the resource information of each SP, for distributing corresponding with its program category and bandwidth, each specific flow-medium performance can guarantee the SP of this program normal play, and judge whether SP resource to be configured is sufficient, if sufficient then dispose maximum number of connections in the described initial configuration file for this program, otherwise dispose minimum linking number for this program.
Preferably, the detailed process of the SP of configuration described in step B resource is:
Check the actual linking number of each program, judge the actual linking number of each program and the relation of the linking number threshold value of presetting, be popular program if actual linking number is higher than described threshold value, otherwise be the unexpected winner program; If current what give certain unexpected winner program configuration is maximum number of connections, then changes it and be configured to minimum linking number; If current what give certain popular program configuration is minimum linking number, and current SP resource abundance, then changes it and be configured to maximum number of connections.
Preferably, when if current SP resource can't satisfy the minimum linking number of specific flow-medium performance, the flow-medium performance of then selecting actual linking number minimum and disposing according to maximum number of connections, the linking number that reduces this flow-medium performance is given described specific flow-medium performance to discharge the SP resource with the SP resource allocation that discharges.
Preferably, when certain SP withdraws from communication system, search SP resource idle in the communication system, replace the described SP transfer flow-medium performance data that withdraw from this free time SP resource.
Preferably, when certain flow-medium performance withdraws from communication system, the SP resource of distributing to this flow-medium performance that withdraws from is reconfigured to the flow-medium performance that does not withdraw from.
Because when the present invention provides flow-medium performance to play service at the Streaming Media communication system, actual connection situation and current SP resource information according to each program are come the resource for program distribution SP, thereby can dynamically adjust the SP resource distribution of each program, overcome the irrational defective of SP resource distribution that causes by manual configuration SP resource in the prior art, make that the SP resource distribution is more reasonable with respect to prior art, can optimize the configuration of SP resource, improve the utilance of SP resource, improve the play quality of program; Simultaneously SP of the present invention is provided by the service provider, so can overcome described certain client that adopts at random of prior art one as various shortcomings that SP caused.
Description of drawings
Fig. 1 is the structure chart of the point-to-point Streaming Media communication system of prior art one;
Fig. 2 is the structure chart of the point-to-point Streaming Media communication system of prior art two;
Fig. 3 is the structure chart of point-to-point Streaming Media communication system of the present invention;
Fig. 4 is the flow chart of the SP resource allocation method of a kind of point-to-point Streaming Media communication system of the present invention.
Embodiment
Below by specific embodiments and the drawings the present invention is described in further details.
Fig. 3 is the structural representation of point-to-point Streaming Media communication system of the present invention.Referring to Fig. 3, this system comprises:
The source server of Streaming Media is used to provide the primary flow media data of program correspondence, and will issue programme information and report to acting server (Proxy Server).
Acting server, be used to manage all source servers and super node (Super Peer), obtain the actual connection situation of program from node server (Peer Server) and promptly receive the number information, obtain the resource information of SP, give program dynamic assignment SP resource according to the actual connection situation of program and the Internet resources situation of SP, comprise in the SP resource to the SP of this program distribution correspondence and the linking number of this SP, with flow-medium performance information be that the SP resource notification of its distribution is given node server and is the SP of this program distribution.
Node server is used for managing all clients from the flow-medium performance information of acting server reception sources server and the resource information of SP, and providing the online number of each program to acting server is actual connection situation.
SP stablizes server for the high bandwidth that service provider provided, and is used for obtaining the primary flow media data of program and being transmitted to client from source server according to the dynamic-configuration of acting server.
Client, promptly common node is used for by obtaining the stream medium data of program alternately with SP and other client.
It is linking number that above-mentioned acting server sends programme information and the configuration information distributed to those SP that distribute to specific program, and knowing after these SP receive needs those programs of service, then from source server take initial data and be given to client; Acting server is also told node server with the SP resource distribution result of programme information and this program correspondence, when certain client need be watched program, can carry out kind of a subquery to node server, node server is just according to the configuration result of acting server, the SP resource information of this program correspondence is returned to client, and client just can be obtained media data alternately with these SP then.
Fig. 4 is the flow chart of the super node resource allocation method in the point-to-point Streaming Media communication system of the present invention.Referring to Fig. 4, this method comprises:
The actual situation that is connected of step 401, the resource information of obtaining current each SP in the described communication system and flow-medium performance.
The SP resource information that step 402, basis are obtained and the actual situation that is connected of flow-medium performance are that specific flow-medium performance distributes the SP resource, and the SP resource that utilization is distributed provides service for the specific flow-medium performance of correspondence.
Concrete, the configuration of SP resource mainly divides following three kinds of situations.
One, when described point-to-point Streaming Media communication system initial start, the collocation method of SP resource is:
(1) when acting on behalf of startup of server, reads default initial SP configuration file, wherein specify the SP quantity of whether enabling automatic configuration, configuration, the program average bit rate of acquiescence, also had the quantity of every type of SP configuration, the minimum linking number of program, the maximum number of connections of program.
(2) SP starts and to land acting server, reports its other resources information, comprising: operator's type of place network (telecommunications/Netcom/education/other), SP type (common SP/ access SP/ hinge SP), bandwidth information, link information etc.Described bandwidth information is network interface card type (10M/100M/1000M) for example, and described link information is LAN IP address and port numbers (IP/Port) and the wide area network IP/Port of this SP for example.
(3) acting server receives the programme information (comprising information such as program identification, type, average bit rate) that the source server issue comes, the resource information that reports according to above-mentioned initial SP profile information and each SP, can guarantee the SP of this program normal play for each specific program in the programme information distributes corresponding with described specific program category and bandwidth, and definite SP that is distributed should be the linking number that this specific program provides.Need to judge whether SP resource to be allocated is sufficient this moment, if sufficient then dispose maximum number of connections in the described initial configuration file for this program, otherwise would dispose minimum linking number to this program.
(4) acting server is after specific program configures SP and linking number, this specific program sign and linking number are sent to the SP that is disposed, SP obtains the primary flow media data of this specific program from source server, set up and being connected of client according to described linking number, and the forwarding stream media data are to client.
Two, after the initial start of point-to-point Streaming Media communication system, enter normal operating conditions, the collocation method of SP resource is:
Acting server regularly or obtain the actual connection situation (comprising that mainly the current actual linking number of each program is end user's number) of each program in real time from node server, obtaining current SP resource information, is program dynamic-configuration SP resource in conjunction with current SP resource information.Concrete collocation method is: the actual linking number of checking each program, judge the actual linking number of each program and the relation of the linking number threshold value of presetting, this threshold value is to judge that program is the standard of popular program or unexpected winner program, can or account for the percentage of maximum number of connections for concrete thresholding linking number, be popular program if actual linking number is higher than this threshold value, otherwise be the unexpected winner program; If current what give certain unexpected winner program configuration is maximum number of connections, then changes it and be configured to minimum linking number to discharge the SP resource; If current what give certain popular program configuration is minimum linking number, and current SP resource abundance, then changes it and be configured to maximum number of connections.
When if current SP resource can't satisfy the minimum linking number of specific program, then select actual linking number minimum and according to the program of maximum number of connections configuration, the linking number that reduces this program is given described specific program to discharge the SP resource with the SP resource allocation that discharges.If current each program all according to minimum linking number configuration, then provides sufficient SP resource by the mode of adding hardware machine (being SP).
By above-mentioned collocation method, idle SP resource can be fully utilized, the SP resource that as far as possible satisfies each program disposes according to maximum number of connections, with the middle transfer efficient of assurance whole system and the watching quality of client.
Acting server is after specific program is redistributed the SP resource, with programme information and distribute linking number to send to the SP that is distributed.SP also can be regularly or in real time with the acting server communication, obtaining up-to-date pertinent program information and linking number, and adjust own state and the accordant configuration information that obtains.
Three, when SP withdrawed from communication system and promptly disconnects with being connected of acting server, acting server was searched other idle SP resources and is replaced the work of treatment (being the transfer program data) of withdrawing from SP, can not be interrupted to guarantee this program that withdraws from institute's transfer of SP.
The program of issuing when source server withdraws from communication system, and when perhaps the source server disconnection causes program to withdraw from communication system with being connected of acting server, acting server will be distributed to this SP resource that withdraws from program and reconfigure to the program that does not withdraw from.
In addition, acting server of the present invention is supported dynamic-configuration and static configuration simultaneously, and main to be configured to automatically, static configuration is auxilliary, and the two can switch use mutually.Be provided with dynamic-configuration pattern or static configuration pattern information in the acting server; When being set to the dynamic-configuration pattern, step 401 is carried out the automatic distribution and the recovery of SP resource with the described actual situation information that is connected according to the issue program of step 402 with present SP resource information as described, utilizes the SP resource of being distributed also to provide service; When being set to the static configuration pattern, to distribute the SP resource and service is provided according to preset configuration file, this preset configuration file can be carried out artificial adjustment and recovery to this configuration file for acting server loading and the SP resource distribution file of preserving.
The function that the present invention also provides dynamic-configuration and static configuration to combine.If mistake appears in the SP resource of acting server dynamic-configuration, when perhaps the dynamic-configuration of partial programme is undesirable, two kinds of processing methods are arranged: 1) the SP resource information of the current configuration of acting server can be preserved into configuration file.And editting function to this configuration file is provided, revise this configuration file by hand by administrative staff after, be re-loaded to acting server again, the error configurations when covering dynamic-configuration.Proceed on the basis of the configuration file that automatic layoutprocedure afterwards will be reloaded this this.2) or can select to stop the dynamic-configuration pattern, transfer the static configuration pattern to, observe a period of time, wait described communication system stable after again decision whether recover automatic configuration mode.
And, the switching of dynamic-configuration pattern of the present invention and static configuration pattern and the preservation of SP configuration file and to load all be dynamic adjustment when acting server is moved, be not need to restart acting server, thereby can not interrupt the operation of current communication system, do not influence the forwarding of program, watch that for client program is fully transparent.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (10)
1, a kind of point-to-point Streaming Media communication system is characterized in that this system comprises: source server, node server, super node SP, client; This system further comprises acting server, wherein:
Source server is used to provide the primary flow media data of flow-medium performance correspondence, and flow-medium performance information is distributed to acting server;
Acting server is used to manage all source servers and super node, obtain the actual connection situation of flow-medium performance from node server, obtain the resource information of SP, Internet resources situation according to the actual connection situation of flow-medium performance and SP is given flow-medium performance dynamic assignment SP resource, with flow-medium performance information be that the SP resource notification of its distribution is given node server and is the SP of this flow-medium performance distribution;
Node server is used for managing all clients from the flow-medium performance information of acting server reception sources server and the resource information of SP, and the actual connection situation of flow-medium performance is provided to acting server;
SP is used for obtaining the primary flow media data of flow-medium performance and being transmitted to client from source server according to the dynamic-configuration of acting server;
Client is used for by obtaining the data of flow-medium performance alternately with SP and other client.
2, a kind of collocation method of point-to-point Streaming Media communication system SP resource is characterized in that this method comprises:
The actual situation that is connected of A, the resource information of obtaining current each SP in the described communication system and flow-medium performance;
The SP resource information that B, combination are obtained and the actual situation that is connected of flow-medium performance are specific flow-medium performance configuration SP resource, and the SP resource that utilization is disposed provides service for the specific flow-medium performance of correspondence.
3, method according to claim 2 is characterized in that, this method further comprises: dynamic-configuration pattern or static configuration pattern information are set in described communication system; When being set to the dynamic-configuration pattern, disposing the SP resource and service is provided according to described steps A and step B; When being set to the static configuration pattern, disposing the SP resource and service is provided according to the manual configuration file that is provided with.
4, method according to claim 2 is characterized in that, the resource information of described SP comprises at least: operator's type information of SP place network, SP type information, bandwidth information, link information.
5, method according to claim 2 is characterized in that, this method further comprises, when point-to-point Streaming Media communication system initial start, according to default initial configuration file for flow-medium performance configuration SP resource and utilize this SP resource that service is provided.
6, method according to claim 5 is characterized in that, the information that comprises in the described initial configuration file is: the minimum linking number of the average bandwidth of the type of SP and quantity, each program, each program, the maximum number of connections of each program; The default initial configuration file of described basis disposes the SP resource and utilizes this SP resource to provide the concrete grammar of service to be for flow-medium performance:
According to the flow-medium performance information of being issued, above-mentioned initial configuration file information and the resource information of each SP, for distributing corresponding with its program category and bandwidth, each specific flow-medium performance can guarantee the SP of this program normal play, and judge whether SP resource to be configured is sufficient, if sufficient then dispose maximum number of connections in the described initial configuration file for this program, otherwise dispose minimum linking number for this program.
7, method according to claim 6 is characterized in that, the detailed process of the SP of configuration described in step B resource is:
Check the actual linking number of each program, judge the actual linking number of each program and the relation of the linking number threshold value of presetting, be popular program if actual linking number is higher than described threshold value, otherwise be the unexpected winner program; If current what give certain unexpected winner program configuration is maximum number of connections, then changes it and be configured to minimum linking number; If current what give certain popular program configuration is minimum linking number, and current SP resource abundance, then changes it and be configured to maximum number of connections.
8, method according to claim 7, it is characterized in that, when if current SP resource can't satisfy the minimum linking number of specific flow-medium performance, the flow-medium performance of then selecting actual linking number minimum and disposing according to maximum number of connections, the linking number that reduces this flow-medium performance is given described specific flow-medium performance to discharge the SP resource with the SP resource allocation that discharges.
9, method according to claim 2 is characterized in that, when certain SP withdraws from communication system, searches SP resource idle in the communication system, replaces the described SP transfer flow-medium performance data that withdraw from this free time SP resource.
10, method according to claim 2 is characterized in that, when certain flow-medium performance withdraws from communication system, the SP resource of distributing to this flow-medium performance that withdraws from is reconfigured to the flow-medium performance that does not withdraw from.
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