CN101883079B - For the method and apparatus of accelerating to request multimedia contents in the Internet - Google Patents
For the method and apparatus of accelerating to request multimedia contents in the Internet Download PDFInfo
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Abstract
The present invention proposes in the Internet for the method and apparatus of accelerating to request multimedia contents.Wherein, user terminal obtains address on multimedia server of the content of multimedia of asking and obtains corresponding indication information according to this address information, multiple relevant information comprising the network node of the identical content of the content of multimedia to be downloaded with this is obtained according to indication information, then according to the relevant information of the plurality of network node, based on P2P agreement, accelerate the download of content of multimedia, using as from multimedia server based on HTTP downloads supplementary.According to method and apparatus of the present invention, the speed of download can be improved, thus improve the fluency of online play multimedia content, improve Consumer's Experience.
Description
Technical field
The present invention relates to the method and apparatus of free online multimedium content in the Internet, particularly relate in the Internet the method and apparatus that free online multimedium content is accelerated.
Background technology
At present, due to developing rapidly of Internet technology and multi-media processing technology, it is further convenient to make by internet transmission content of multimedia, thus content supplier provides increasing content of multimedia on the internet, also has increasing user to depend on this new media of the Internet and listens to online, watches content of multimedia.
Traditional Multimedia on demand service is mainly based on the pattern operation of server/customer end (Client/Server, C/S).Multi-medium data, as video, is mainly centrally stored in server end, and user is connected and foradownloaded video data by web browser and respective server based on http protocol, reaches the object of online viewing.This pattern achieves video-on-demand service to a certain extent, but the number of users that under this pattern, server can carry is very limited, after userbase expands, just need increase server and corresponding server end bandwidth, and the flexibility ratio downloaded is inadequate, can only provide single-threaded download, in addition, the speed downloaded also is limited to the bandwidth of server, and content of multimedia at a high speed cannot be provided to download.
In view of the above-mentioned problems in the prior art, the present invention proposes and adopt P2SP (PeerToServerandPeer, point-to-point end) technology is to the scheme accelerated with the online request of HTTP mode, drastically increase the video playout speed of online request, bring better Consumer's Experience (UserExperience).
Summary of the invention
Traditional based in the online request mode of http protocol in order to solve, along with wishing the increase of number of users of the same content of multimedia of program request and the limited bandwidth of server, and cause user cannot the problem of normal point playing multimedia content, the present invention proposes and adopt P2SP (PeerToServerandPeer, point-to-point end) technology to the scheme accelerated with the online request of HTTP mode.
Particularly, according to a first aspect of the invention, provide a kind of method of the content of free online multimedium in the user terminal, wherein, described user terminal obtains the address information of described content of multimedia on multimedia server, and the program request of described content of multimedia is carried out according to this address information, the method is further comprising the steps of: according to described address information, obtains the indication information of described content of multimedia; According to described indication information, when comprising described content of multimedia in one or more point to point network resource, obtain the resource related information of described one or more point to point network resource; According to described resource related information, described program request is accelerated;
According to a second aspect of the invention, provide a kind of method downloading content of multimedia in first network server for assist user terminal, wherein, comprise the following steps: obtain the indication information from described user terminal; According to described indication information, obtain the first content identification information of described content of multimedia; Described first content identification information is supplied to described user terminal;
According to a third aspect of the invention we, provide a kind of auxiliary method for down loading accelerating to download content of multimedia in second network server for assist user terminal, multimedia server comprises described content of multimedia to be downloaded, and this auxiliary method for down loading comprises the steps: to receive the node related information corresponding with the content of multimedia that described user terminal is asked from described user terminal; According to described node related information, obtain the relevant information of other user terminal node of corresponding burst; The relevant information of other user terminal node described is sent to described user terminal;
According to a fourth aspect of the present invention, provide a kind of control device of the content of free online multimedium in the user terminal, wherein, comprise, address information acquisition device, for obtaining the address information of described content of multimedia on multimedia server, on-demand device, for carrying out the program request of described content of multimedia according to this address information, this control device also comprises: indication information acquisition device, for according to described address information, obtain the indication information of described content of multimedia; Node resource acquisition device, for according to described indication information, when comprising described content of multimedia in one or more point to point network resource, obtains the resource related information of described one or more point to point network resource; Program request accelerator, for according to described resource related information, accelerates described program request;
According to a fifth aspect of the invention, provide a kind of the first servicing unit downloading content of multimedia in first network server for assist user terminal, wherein, comprise the following steps:
First acquisition device, for obtaining the indication information from described user terminal;
First generator, for according to described indication information, obtains the first content identification information of described content of multimedia, and described first content identification information is supplied to described user terminal;
According to a sixth aspect of the invention, provide a kind of the second auxiliary method for down loading accelerating to download content of multimedia in second network server for assist user terminal, multimedia server comprises described content of multimedia to be downloaded, and this auxiliary method for down loading comprises the steps:
Second acquisition device, for receiving the first content identification information corresponding with the content of multimedia that described user terminal is asked from described user terminal;
Node related information generator, for according to described first content identification information, obtains the relevant information of other peer user t node of corresponding burst, and the relevant information of other peer user t node described is sent to described user terminal.
By using according to method of the present invention or device, tool has the following advantages:
According to this address information, this content of multimedia can be obtained from multiple Internet resources simultaneously, greatly improve the speed of download of this content of multimedia.
Accompanying drawing explanation
Read the following detailed description to non-limiting example by referring to accompanying drawing, more easily can understand features, objects and advantages of the invention.Wherein, same or analogous Reference numeral represents same or analogous element (device).
Fig. 1 shows the network topology structure schematic diagram according to a specific embodiment of the present invention;
Fig. 2 shows the systems approach flow chart according to a specific embodiment of the present invention;
Fig. 3 shows the fault-tolerant processing carrying out accelerating program request to R2SP mode to content of multimedia according to a specific embodiment of the present invention;
Fig. 4 show according to another specific embodiment of the present invention using multimedia length and multimedia partial content as indication information to obtain the specific implementation of corresponding first content identification information;
Fig. 5 shows the device block diagram according to a specific embodiment of the present invention;
Fig. 6 shows the device block diagram carrying out accelerating the fault-tolerant processing of program request to R2SP mode to content of multimedia according to a specific embodiment of the present invention.
Embodiment
Fig. 1 shows the network topology structure schematic diagram according to a specific embodiment of the present invention.Wherein, this network comprises user terminal 1; Multimedia server 2, this multimedia server 2 for storing content of multimedia and according to the request of different user, for each user provides corresponding content of multimedia; First network server 3, this first network server 3 comprises index server (IndexServer); Second network server 4, this second network server 4 comprises LIST SERVER (TrackerServer), and one or more peer node 5 (peer).
Fig. 2 shows method flow diagram according to an embodiment of the invention.Below, with reference to Fig. 2, and composition graphs 1, method flow diagram of the present invention is described.
In step slo, user terminal 1 obtains this institute and asks the address information of the content of multimedia of program request on multimedia server 2.
Particularly, when user wishes a program request content of multimedia, it is by the browser in user terminal 1, order request message is sent to multimedia server 2, the address information of asked content of multimedia on multimedia server 2 is comprised in this order request message, such as, the uniform resource locator (URL, UniformResourceLocator) of this content of multimedia.
User terminal 1, by Floor layer Technology, gets the URL of this content of multimedia on asked multimedia content server.Such as, user terminal 1 obtains the URL of content of multimedia on asked multimedia content server by bottom hook technology (hook).Hook technology is a platform of windows messaging treatment mechanism, and application program can arrange sub-journey to monitor certain message of specified window above, and the window monitored can be that other processes create.When message arrive after, target window process function pre-treatment it.Hook mechanism allows application program to intercept and capture process window message or particular event.Hook is actually the program segment of a processing messages, by system call, it is linked into system.Whenever specific message sends, before not arriving object window, hook program just first catches this message, that is hook function first obtains control.At this moment namely hook function can process process (change) this message, also can not deal with and continue to transmit this message, can also force the transmission of end.In addition, user terminal 1 can also pass through active agency script, intercepts and captures the URL of the content of multimedia of asking.The operation that certain user terminal 1 obtains the URL of the content of multimedia of asking by such as hook technology etc. is all-transparent for user, and also, user can not perceive the operation of the address of the content of multimedia that the acquisition that user terminal 1 is asked.
Obtain the URL of asked content of multimedia at user terminal 1 after, such as, the URL of this content of multimedia is
http:// www.abc.com/a/1.flvafter, the method enters step S11, and user terminal 1 sends a request message respectively to multimedia server 2 and first network server 3.Wherein, the request message that user terminal 1 sends to multimedia server 2 sends multimedia request content for asking multimedia server 2, and user terminal 1 comprises the URL of this content of multimedia to the request message that first network server 3 sends, also,
http:// www.abc.com/a/1.flv.Certainly, user terminal 1 can simultaneously or different time send a request message respectively to multimedia server 2 and first network server 3, the transmitting time not obvious sequencing of these two request messages.
After multimedia server 2 receives the request message of user terminal 1, it can according to this request message, and also, online request request message, provides corresponding content of multimedia to user terminal 1, and this is prior art, therefore, does not repeat them here.
Then, in step s 12, when first network server 3 receives the address information comprising content of multimedia of user terminal 1, such as, after the message of URL, first network server 3, according to this URL information, obtains the first content identification information corresponding with this URL.
First content identification information such as, can comprise MD5 check code (Message-digestAlgorithm5, md5-challenge).Usually, file content is different, and corresponding MD5 is different, and therefore, MD5 may be used for unique identification content.Below, for convenience of explanation, first content identification information is represented with MD5.But those skilled in the art will be understood that first content identification information is not limited to MD5, also can generate by SHA-1, RIPEMD and Haval scheduling algorithm the first content identification information being used for unique identification content of multimedia.
Index server is comprised, wherein the local mapping table such as being maintained the first content identification information of multiple URL and multiple content of multimedia by the mode of database at first network server 3.URL comprises the address of multiple content of multimedia on multimedia content server 2.Multimedia content server 2 comprises the server of multiple different content supplier, such as, can be the server of potato net, cruel 6 server, the server etc. in excellent storehouse.This mapping table is reported by each terminal and is set up.Concrete report process, will be described in detail hereinafter.
If first network server 3 is by searching the mapping table of URL and first content identification information, have found the MD5 corresponding with URL, then the method enters step S13.
In step s 13, the MD5 corresponding with the URL of asked content of multimedia obtained in step s 12 is sent to user terminal 1 by first network server 3.
Then, in step S14, the MD5 of this acquisition is supplied to second network server 4 by user terminal 1.Be appreciated that second network server 4 comprises the TrackerServer of traditional P2P, wherein save the corresponding relation of the resource related information of MD5 and node (peer).Second network server 4, by searching this corresponding relation, finds the resource related information of the node corresponding with the MD5 sent by user terminal 1, such as, and address of node etc.
Then, the method enters step S15, and the resource related information with the one or more nodes corresponding to this MD5 is returned to user terminal 1 by second network server 4.
Then, in step s 16, user terminal 1, according to the resource related information of the node of the concrete correspondence obtained in step S15, initiates download request to corresponding node.
Then, in step S17, user terminal 1 according to the address of multimedia server 2, and carries out online request based on http protocol to content of multimedia, and user terminal accelerates from corresponding Nodes according to the program request of point-to-point (P2P) agreement to this content of multimedia simultaneously.
If first network server 3 is by searching the mapping table of URL and first content identification information, do not find the MD5 corresponding with URL, then the method enters step S18, user terminal 1 only according to the address of multimedia server 2 of its request, based on this content of multimedia of http protocol program request.
In the embodiment of a change, after user terminal 1 completes the content of multimedia complete from the download of multimedia server 2 in step S18, the method also comprises step S19 (not shown), user terminal 1 is according to being buffered in local complete content of multimedia (not shown), local the second content identification information generated corresponding to this content of multimedia, the MD5 that also namely the content of multimedia of download complete with this is corresponding.Particularly, whole content of multimedia is carried out piecemeal by user terminal 1, is that each piecemeal generates corresponding MD5, and the MD5 of all this content of multimedia calculated is being calculated to a total MD5, this total MD5 is the MD5 corresponding with content of multimedia.Then, the corresponding relation of user terminal 1 URL on multimedia server 2 by this newly-generated MD5 and this content of multimedia sends to first network server 3, so that first network server 3 upgrade in the first network server 3 (such as, in its database) renewal first network server 3 on the corresponding relation of URL and MD5.In addition, the MD5 of generation and the relevant information of this node are also reported to second network server by user terminal 1, so that the corresponding relation of second network server update MD5 and node.
Above-described embodiment is the situation considering that the corresponding relation between data content and URL remains unchanged within a period of time.In actual applications, multimedia content server 2 may upgrade the content that it is preserved, such as, when first day,
http:// www.123.Aaddress in the multimedia file deposited be file a, second day time, multimedia content server 2 will
http:// www.123.Aaddress in the content of multimedia deposited be updated to file b, second day time, a user wishes online play multimedia content b, and therefore, the URL corresponding with content of multimedia b is supplied to first network server 3 by user terminal 1, also,
http:// www.123.A.But because multimedia server 2 is third party software, therefore, first network server 3 cannot the renewal of corresponding relation of URL rapidly in perception multimedia server 2 and content of multimedia, also, first network server 3 still to save first day
http:// www.123.Awith the corresponding relation of content of multimedia a, therefore, although first network server 3 is according to this URL, be also
http:// www.123.Acorresponding MD5 can be found, but be not in fact the MD5 corresponding to content of multimedia b that user terminal 1 wishes to download, but the expired MD5 corresponding to content of multimedia a.Therefore, if user terminal 1 downloads the data of content of multimedia b from multimedia server 2 based on http protocol, and downloaded the data slot of content of multimedia a from one or more peer terminals 5 based on P2P agreement simultaneously, this will cause the confusion of data content, finally cause and user cannot normal play content of multimedia b.
Consider said circumstances, the invention provides the fault-tolerant way of P2SP.Particularly, as shown in Figure 3, in step S15, user terminal 1 obtains the corresponding one or more nodes of the MD5 corresponding with URL that provide from first network server 3 (also i.e. peer terminals 5) relevant information.Then, the method enters step S20, and user terminal 1 obtains the content_length of respective multimedia file and the partial content of content of multimedia from multimedia server 2 and peer terminals 5 respectively.
The partial content of this content of multimedia can be the content of 100k before the front 5k-of content of multimedia.Before the front 5k-of this content of multimedia, 100k content can comprise HTTP head, Streaming Media head and a part of content of multimedia.Be appreciated that, because the HTTP head of different multimedia files may be identical, therefore, preferably, do not comprise HTTP head in the partial content of this content of multimedia, only comprise Streaming Media head and a part of content of multimedia near head, such information is more accurate, more can distinguish different content of multimedia, make serious forgiveness higher.In fact, the partial content of content of multimedia is only adopted to be inadequate as the indication information for retrieving MD5.Because such situation may be there is: such as, a content of multimedia is the fragment of the cutting of another content of multimedia, such as, one section of complete multimedia file is divided into Part I and Part II, then the information of the front 5k to front 100k of this Part I is probably identical to front 10k content with the front 5k of this complete content of multimedia, thus, cannot only distinguish both according to the previous section data content of two sections of content of multimedia.Therefore, in order to indicate different content of multimedia, content-length information is also needed.
Then, in the step s 21, user terminal 1 judges whether the array [content_length, the data content of front 20k] from multimedia server 1 is identical with [content_length, the data content of front 20k] from peer terminals 5.If identical, then the method enters step S17, user terminal 1 is according to the address of multimedia server 2, and based on http protocol, online request carrying out to content of multimedia, user terminal accelerates from corresponding Nodes according to the program request of point-to-point (P2P) agreement to this content of multimedia simultaneously.
Not identical both if user terminal 1 judges, then the method enters step S22, only downloads according to http protocol from this multimedia server 2.
In the embodiment of a change, the download content of multimedia b from multimedia server 2 is completed at user terminal 1, the method also comprises step S23, and user terminal 1 is according to being buffered in local complete content of multimedia b, and local generation corresponds to the MD5 of this content of multimedia b.Particularly, whole content of multimedia b is carried out piecemeal by user terminal 1, is that each piecemeal generates corresponding MD5, the MD5 of all this content of multimedia b calculated is being calculated to a total MD5.
Then in step s 24 which, user terminal 1 sends a report information to first network server 3, this report information comprises for notifying first network server 3, the corresponding relation of URL and the MD5 preserved in first network server 3 may inaccurate information, preferably, can also comprise in this report information: the indication information of the corresponding relation of MD5 and the URL that user terminal 1 generates.Those skilled in the art will be understood that in multimedia server 2, also can generate corresponding MD5 according to content of multimedia, and user terminal 1 should be identical for the rule generating MD5 with multimedia server 2 for the rule generating MD5.
In addition, it is likely also for following object that URL in multimedia server 2 and the corresponding relation of content of multimedia change: in order to prevent stealing chain, multimedia server 2, also be, the server of video website may change the URL corresponding to storing multimedia data content continually, such as, store the directory address of this multimedia data contents regularly/upgrade aperiodically, still be described for above-mentioned change case, file a in the address of first day in multimedia content server 2 is
http:// www.123.A, file a, in order to prevent the stolen chain of this content of multimedia, changed to by content supplier in second day
http:// www.123.Bin pointed catalogue, wherein, should
http:// www.123.Baddress in do not store any content before this.After the updating,
http:// www.123.Aaddress in do not store any content of multimedia.But, because first network server 3 cannot content of multimedia in quick sensing content server 2 and the change between the corresponding relation of URL, also be, content supplier have updated the corresponding relation of content of multimedia and URL, but first network server 3 does not know to have carried out above-mentioned renewal, such as, in step s 11, user terminal 1 will
http:// www.123.Bbe supplied to first network server 3, but first network server 3 only saves in first day
http:// www.123.Awith the corresponding relation of file a, and
http:// www.123.Bnot corresponding with it content of multimedia in address.Also namely, according to the URL address upgraded, first network server 3 cannot find corresponding content of multimedia, but in fact, this content of multimedia is still kept on multimedia content server 2, has only changed the path of preserving.Now, the method enters step S30, according to URL, user terminal 1 does not obtain corresponding MD5, such as, user terminal 1 have received the feedback message not finding the MD5 corresponding with URL from first network server 3, or, exceed official hour, user terminal 1 does not receive the feedback message finding the MD5 corresponding with URL from first network server 3 yet.Then the method enters step S31, and user terminal 1, by the indication information of the length (content_length) of the partial content and content of multimedia that comprise content of multimedia, is issued first network server 3 and retrieved.
First network server 3 can also be preserved the partial content of content of multimedia and the corresponding relation between the length (content_length) of content of multimedia and MD5.Such as, indication information is generated, corresponding relation first network server 3 prestored between this indication information and MD5 according to the content_length of 20k content and this section of content of multimedia before content of multimedia.Then in step s 32, first network server 3 according to send in step S31 at user terminal 1 comprise content of multimedia before the indication information of content_length of 20k content and this section of content of multimedia carry out searching the corresponding relation between indication information and MD5 wherein preserved.If find corresponding MD5, then the method enters step S33.In step S33, the MD5 corresponding with the indication information of the content_length comprising this multimedia partial content and this section of content of multimedia obtained in step S31 is sent to user terminal 1 by first network server 3.Then, the method enters step S14 and S15, because be described hereinbefore, therefore, does not repeat them here.
If in step S31, first network server 1 does not find the MD5 corresponding with the indication information of the content_length comprising this multimedia partial content and this section of content of multimedia, then the method enters step S18, user terminal 1 only according to the address of multimedia server 2 of its request, based on this content of multimedia of http protocol program request.
After step S18, enter step S19, user terminal 1, according to being buffered in local complete multimedia content, generates the second content identification information corresponding to this content of multimedia.
Be described in detail from the angle of systems approach each embodiment of the present invention hereinbefore, below, by the angle from device, present invention is described.
With reference to Fig. 5, and composition graphs 1 and Fig. 2, the device block diagram of a specific embodiment according to the present invention is described.Control device 10 shown in Fig. 5 is arranged in the user terminal 1 shown in Fig. 1.Control device 10 comprises address information acquisition device 100, indication information acquisition device 101, node resource acquisition device 102, on-demand device 103 and program request accelerator 104.Wherein, node resource acquisition device 102 also comprises first content mark acquisition device 1020 and first content mark generator 1021.Wherein, this first indication information generator 102
The first servicing unit 20 shown in Fig. 5 is arranged in the first network server 3 shown in Fig. 1.First servicing unit 20 comprises the first acquisition device 200, first generator 201, report acquisition device 202 and updating device 203.
The second servicing unit 30 shown in Fig. 5 is arranged in the second network server 4 shown in Fig. 1.Second servicing unit 30 comprises the second acquisition device 300 and node related information generator 301.
First, address information acquisition device 100 obtains this institute and asks the address information of the content of multimedia of program request on multimedia server 2.
Particularly, when user wishes a program request content of multimedia, it is by the browser in user terminal 1, order request message is sent to multimedia server 2, the address information of asked content of multimedia on multimedia server 2 is comprised in this order request message, such as, the uniform resource locator (URL, UniformResourceLocator) of this content of multimedia.
Address information acquisition device 100, by Floor layer Technology, gets the URL of this content of multimedia on asked multimedia content server.Such as, address information acquisition device 100 obtains the URL of content of multimedia on asked multimedia content server by bottom hook technology (hook).Hook technology is a platform of windows messaging treatment mechanism, and application program can arrange sub-journey to monitor certain message of specified window above, and the window monitored can be that other processes create.When message arrive after, target window process function pre-treatment it.Hook mechanism allows application program to intercept and capture process window message or particular event.Hook is actually the program segment of a processing messages, by system call, it is linked into system.Whenever specific message sends, before not arriving object window, hook program just first catches this message, that is hook function first obtains control.At this moment namely hook function can process process (change) this message, also can not deal with and continue to transmit this message, can also force the transmission of end.In addition, address information acquisition device 100 can also pass through active agency script, intercepts and captures the URL of the content of multimedia of asking.The operation that certain address information acquisition device 100 obtains the URL of the content of multimedia of asking by such as hook technology etc. is all-transparent for user, also namely, user can not perceive the operation of the address of the content of multimedia that the acquisition that address information acquisition device 100 is asked.
Obtain the URL of asked content of multimedia at address information acquisition device 100 after, the information that indication information acquisition device 101 obtains according to acquisition device 100, obtains indication information, and such as, the URL that this indication information comprises this content of multimedia is
http:// www.abc.com/a/1.flvafterwards, indication information generator 10201 sends a request message respectively to multimedia server 2 and first network server 3.Wherein, the request message that indication information generator 10201 sends to multimedia server 2 sends multimedia request content for asking multimedia server 2, indication information generator 10201 comprises the URL of this content of multimedia to the request message that the first servicing unit 20 sends, and is also
http:// www.abc.com/a/1.flv.Certainly, indication information generator 10201 can simultaneously or different time send a request message respectively to multimedia server 2 and first network server 3, the transmitting time not obvious sequencing of these two request messages.
When after the request message that multimedia server 2 receives from indication information generator 10201, multimedia server 2 can, according to this request message, also be, online request request message, provides corresponding content of multimedia to user terminal 1, and this is prior art, therefore, do not repeat them here.
Then, when the first acquisition device 200 receives the address information comprising content of multimedia from indication information acquisition device 101, such as, after the message of URL, first generator 201, according to this URL information, obtains the first content identification information corresponding with this URL.
First content identification information such as, can comprise MD5 check code (Message-digestAlgorithm5, md5-challenge).Usually, file content is different, and corresponding MD5 is different, and therefore, MD5 may be used for unique identification content.Below, for convenience of explanation, first content identification information is represented with MD5.But those skilled in the art will be understood that first content identification information is not limited to MD5, also can generate by SHA-1, RIPEMD and Haval scheduling algorithm the first content identification information being used for unique identification content of multimedia.
Index server is comprised, wherein the local mapping table such as being maintained the first content identification information of multiple URL and multiple content of multimedia by the mode of database at first network server 3.URL comprises the address of multiple content of multimedia on multimedia content server 2.Multimedia content server 2 comprises the server of multiple different content supplier, such as, can be the server of potato net, cruel 6 server, the server etc. in excellent storehouse.This mapping table is reported by each terminal and is set up.Concrete report process, will be described in detail hereinafter.
If first network server 3 is by searching the mapping table of URL and first content identification information, have found the MD5 corresponding with URL, then the MD5 corresponding with the URL of asked content of multimedia obtained sends to the first content in control device 10 to identify acquisition device 1020 by the first generator 201.
Then, the MD5 of this acquisition is supplied to the second acquisition device 300 in the second servicing unit 30 of second network server 4 by first content mark generator 1021.Be appreciated that second network server 4 comprises the TrackerServer of traditional P2P, wherein save the corresponding relation of the resource related information of MD5 and node (peer).Node related information generator 301 is by searching this corresponding relation, find the resource related information of the node corresponding with the MD5 sent by user terminal 1, such as, address of node etc., and the control device 10 resource related information with the one or more nodes corresponding to this MD5 being returned to user terminal 1.
Then, the node resource acquisition device 102 of control device 10, according to the resource related information of the node of obtained concrete correspondence, initiates download request to corresponding node.
Then, on-demand device (not shown in Fig. 5) is according to the address of multimedia server 2, and based on http protocol, online request is carried out to content of multimedia, program request accelerator simultaneously (not shown in Fig. 5) is accelerated from corresponding Nodes according to the program request of point-to-point (P2P) agreement to this content of multimedia.It will be understood by those skilled in the art that on-demand device and program request accelerator can be completed by same hardware unit.
If the first generator 201 of first network server 3 is by searching the mapping table of URL and first content identification information, do not find the MD5 corresponding with URL, then on-demand device is only according to the address of the multimedia server 2 of its request, based on this content of multimedia of http protocol program request.
In the embodiment of a change, after on-demand device completes the content of multimedia complete from the download of multimedia server 2, second content identification generating apparatus (not shown) is according to being buffered in local complete content of multimedia, local the second content identification information generated corresponding to this content of multimedia, the MD5 that also namely the content of multimedia of download complete with this is corresponding.Particularly, whole content of multimedia is carried out piecemeal by the second content identification generating apparatus, for each piecemeal generates corresponding MD5, then calculate a total MD5 to the MD5 of all this content of multimedia calculated, this total MD5 is the MD5 corresponding with content of multimedia.Then, the corresponding relation of the first annunciator URL on multimedia server 2 by this newly-generated MD5 and this content of multimedia sends to the report acquisition device 202 of first network server 3, so that the updating device 203 of first network server 3 in the first network server 3 (such as, in its database) renewal first network server 3 on the corresponding relation of URL and MD5.In addition, the MD5 of generation and the relevant information of this node are also reported to second network server by the first annunciator, so that the corresponding relation of second network server update MD5 and node.
Above-described embodiment is the situation considering that the corresponding relation between data content and URL remains unchanged within a period of time.In actual applications, multimedia content server 2 may upgrade the content that it is preserved, such as, when first day,
http:// www.123.Aaddress in the multimedia file deposited be file a, second day time, multimedia content server 2 will
http:// www.123.Aaddress in the content of multimedia deposited be updated to file b, second day time, a user wishes online play multimedia content b, and therefore, the URL corresponding with content of multimedia b is supplied to the first acquisition device 200 by indication information generator 10201, also,
http:// www.123.A.But because multimedia server 2 is third party software, therefore, first network server 3 cannot the renewal of corresponding relation of URL rapidly in perception multimedia server 2 and content of multimedia, also, first network server 3 still to save first day
http:// www.123.Awith the corresponding relation of content of multimedia a, therefore, although first network server 3 is according to this URL, be also
http:// www.123.Acorresponding MD5 can be found, but be not in fact the MD5 corresponding to content of multimedia b that user terminal 1 wishes to download, but the expired MD5 corresponding to content of multimedia a.Therefore, if user terminal 1 downloads the data of content of multimedia b from multimedia server 2 based on http protocol, and downloaded the data slot of content of multimedia a from one or more peer terminals 5 based on P2P agreement simultaneously, this will cause the confusion of data content, finally cause and user cannot normal play content of multimedia b.
Consider said circumstances, the invention provides the fault-tolerant way of P2SP.Particularly, as shown in Figure 6, after node resource acquisition device 102 obtains the corresponding one or more nodes of the MD5 corresponding with URL that provide from first network server 3 (also i.e. peer terminals 5) relevant information, pre-acquiring device 103 obtains the content_length of respective multimedia file and the partial content of content of multimedia from multimedia server 2 and peer terminals 5 respectively.
The partial content of this content of multimedia can be the content of 100k before the front 5k-of content of multimedia.Before the front 5k-of this content of multimedia, 100k content can comprise HTTP head, Streaming Media head and a part of content of multimedia.Be appreciated that, because the HTTP head of different multimedia files may be identical, therefore, preferably, do not comprise HTTP head in the partial content of this content of multimedia, only comprise Streaming Media head and a part of content of multimedia near head, such information is more accurate, more can distinguish different content of multimedia, make serious forgiveness higher.In fact, the partial content of content of multimedia is only adopted to be inadequate as the indication information for retrieving MD5.Because such situation may be there is: such as, a content of multimedia is the fragment of the cutting of another content of multimedia, such as, one section of complete multimedia file is divided into Part I and Part II, then the information of the front 5k to front 100k of this Part I is probably identical to front 10k content with the front 5k of this complete content of multimedia, thus, cannot only distinguish both according to the previous section data content of two sections of content of multimedia.Therefore, in order to indicate different content of multimedia, content-length information is also needed.
Then, comparison means 104 judges whether the array [content_length, the data content of front 20k] from multimedia server 1 is identical with [content_length, the data content of front 20k] from peer terminals 5.If identical, then on-demand device is respectively according to the address of multimedia server 2, and based on http protocol, online request carrying out to content of multimedia, acceleration point broadcasting device accelerates from corresponding Nodes according to the program request of point-to-point (P2P) agreement to this content of multimedia simultaneously.
Not identical both if comparison means 104 judges, then on-demand device is only downloaded according to http protocol from this multimedia server 2.
In the embodiment of a change, complete the download content of multimedia b from multimedia server 2 at user terminal 1, user terminal 1 is according to being buffered in local complete content of multimedia b, and local generation corresponds to the MD5 of this content of multimedia b.Particularly, whole content of multimedia b is carried out piecemeal by user terminal 1, is that each piecemeal generates corresponding MD5, then calculates a total MD5 to the MD5 of all this content of multimedia b calculated.
Then the second annunciator sends a report information to first network server 3, this report information comprises for notifying first network server 3, the corresponding relation of URL and the MD5 preserved in first network server 3 may inaccurate information, preferably, can also comprise in this report information: the indication information of the corresponding relation of MD5 and the URL that user terminal 1 generates.Those skilled in the art will be understood that in multimedia server 2, also can generate corresponding MD5 according to content of multimedia, and user terminal 1 should be identical for the rule generating MD5 with multimedia server 2 for the rule generating MD5.
In addition, it is likely also for following object that URL in multimedia server 2 and the corresponding relation of content of multimedia change: in order to prevent stealing chain, multimedia server 2, also be, the server of video website may change the URL corresponding to storing multimedia data content continually, such as, store the directory address of this multimedia data contents regularly/upgrade aperiodically, still be described for above-mentioned change case, file a in the address of first day in multimedia content server 2 is
http:// www.123.A, file a, in order to prevent the stolen chain of this content of multimedia, changed to by content supplier in second day
http:// www.123.Bin pointed catalogue, wherein, should
http:// www.123.Baddress in do not store any content before this.After the updating,
http:// www.123.Aaddress in do not store any content of multimedia.But, because first network server 3 cannot content of multimedia in quick sensing content server 2 and the change between the corresponding relation of URL, also be, content supplier have updated the corresponding relation of content of multimedia and URL, but first network server 3 does not know to have carried out above-mentioned renewal, such as, in step s 11, user terminal 1 will
http:// www.123.Bbe supplied to first network server 3, but first network server 3 only saves in first day
http:// www.123.Awith the corresponding relation of file a, and
http:// www.123.Bnot corresponding with it content of multimedia in address.Also namely, according to the URL address upgraded, first network server 3 cannot find corresponding content of multimedia, but in fact, this content of multimedia is still kept on multimedia content server 2, has only changed the path of preserving.Therefore, also be, first judgment means is judged cannot find corresponding MD5 according to URL, then in this case, indication information generator 101 using according to the partial content of content of multimedia and the length (content_length) of content of multimedia as indication information, issue first network server 3 and retrieve.
First network server 3 can also be preserved the partial content of content of multimedia and the corresponding relation between the length (content_length) of content of multimedia and MD5.Such as, indication information is generated, corresponding relation first network server 3 prestored between this indication information and MD5 according to the content_length of 20k content and this section of content of multimedia before content of multimedia.Then first network server 3 according to indication information generator 101 send comprise content of multimedia before the indication information of content_length of 20k content and this section of content of multimedia carry out searching the corresponding relation between indication information and MD5 wherein preserved.If find corresponding MD5, then the MD5 corresponding with the indication information of the content_length comprising this multimedia partial content and this section of content of multimedia obtained is sent to user terminal 1 by first network server 3, also be, the first content identification information of user terminal 1 obtains corresponding MD5, also namely, the judged result of the second judgment means is obtain corresponding MD5.Then, node resource acquisition device 102, on-demand device and program request accelerator carry out respective operation respectively, because being described hereinbefore, do not repeat them here.
If do not find the MD5 corresponding with the indication information of the content_length comprising this multimedia partial content and this section of content of multimedia, namely the judged result of the second judgment means is no, then on-demand device is only according to the address of the multimedia server 2 of its request, based on this content of multimedia of http protocol program request.
Then, the second content identification generating apparatus, according to being buffered in local complete multimedia content, generates the second content identification information corresponding to this content of multimedia.
It will be appreciated by those skilled in the art that, in the embodiment of each device, the sub-device realizing identical function in same module can be completed by identical hardware or software module, and such as, the first judgment means and the second judgment means all can be completed by a CPU.
Above the specific embodiment of the present invention is described.It should be noted that, the present invention is not limited to above-mentioned particular implementation, and those skilled in the art can make various modification or amendment within the scope of the appended claims, and these distortion or amendment are all in the protection range of claims.
Claims (26)
1. the method for a free online multimedium content in the user terminal, wherein, described user terminal obtains the address information of described content of multimedia on multimedia server, and carries out the program request of described content of multimedia according to this address information, and the method is further comprising the steps of:
A. according to described address information, the indication information of described content of multimedia is obtained;
B. according to described address information, judge whether comprise described content of multimedia in one or more point to point network resource;
-when not finding described one or more point to point network resource according to described address information, according to length and at least part of content of the content of multimedia of program request, judge whether comprise described content of multimedia in described one or more point to point network resource;
-when comprising described content of multimedia in one or more point to point network resource, obtain the resource related information of described one or more point to point network resource;
C. according to described resource related information, described program request is accelerated.
2. method according to claim 1, is characterized in that, described indication information comprises following any one or whole:
-described address information;
The length of the content of multimedia of-described program request and at least part of content;
Described step b also comprises:
B1. according to described indication information, the first content identification information corresponding with described indication information is obtained;
B2. according to described first content identification information, the node related information of the point to point network resource of the burst of the content comprised corresponding to described first content identification information is obtained;
Wherein, described step c also comprises:
According to described node related information, based on point-to-point technology and described point to point network resource, described program request is accelerated.
3. method according to claim 2, is characterized in that, described step b1 also comprises:
B11. described indication information is supplied to first network server;
B12. the described first content identification information corresponding with described indication information from described first network server is obtained.
4. according to the method in claim 2 or 3, it is characterized in that, described step b2 is further comprising the steps of:
B21. described first content identification information is supplied to second network server;
B22. the described node related information comprising the point to point network resource of the burst of the content corresponding to described first content identification information from described second network server is obtained.
5. method according to claim 3, is characterized in that, described method is further comprising the steps of:
I. judge whether comprise described content of multimedia in described one or more point to point network resource; When not comprising described content of multimedia in described one or more point to point network resource:
-after completing described program request, generate second content identification information corresponding with the content of multimedia of described program request;
-described second content identification information and described indication information are reported to described first network server, and the node related information of described user terminal is reported to second network server.
6. method according to claim 5, is characterized in that, when the judged result of described step I is when comprising described content of multimedia in described one or more point to point network resource, further comprising the steps of after described step I:
Ii. judge that whether the described content of multimedia that described one or more point to point network resource comprises is corresponding with the content of multimedia of request; If not corresponding, then only from content of multimedia described in described multimedia server program request.
7. method according to claim 6, described step I i comprises further:
Ii1. the file size of described content of multimedia is also obtained respectively respectively from described one or more point to point network resource and described multimedia server pre-program request part content of multimedia;
Ii2. according to file size and at least part of file content of the described content of multimedia obtained respectively from described one or more point to point network Energy Resources Service and described multimedia server, judge that whether two content of multimedia are identical; If not identical, then only from content of multimedia described in described multimedia server program request.
8. method according to claim 7, is characterized in that, also comprises after described step I i2:
-Ruo is not identical, after completing described program request, generates second content identification information corresponding with the content of multimedia of described program request, and is corresponding with described second content identification information to indication information described in described first network server feedback.
9. in first network server, download a method for content of multimedia for assist user terminal, wherein, comprise the following steps:
M. the indication information from described user terminal is obtained;
N. according to described indication information, obtain the first content identification information of described content of multimedia, described indication information comprises address information; Wherein,
When not finding the first content identification information of described content of multimedia according to described address information, according to length and at least part of content of the described content of multimedia of program request, search the first content identification information of described content of multimedia;
O. described first content identification information is supplied to described user terminal.
10. method according to claim 9, is characterized in that, store the indication information of one or more content of multimedia and the corresponding relation of multimedia first content identification information in described first network server, described step n also comprises:
-according to described address information and the indication information of described one or more content of multimedia and the corresponding relation of multimedia first content identification information, obtain the first content identification information of described content of multimedia.
11. methods according to claim 10, is characterized in that, described method is further comprising the steps of:
-obtain the second content identification information of reporting from described user terminal and/or state updating information that the corresponding relation of the described indication information reported from described user terminal and described first content identification information changes;
-according to described second content identification information and/or described state updating information, create or upgrade the indication information of described one or more content of multimedia and the corresponding relation of described first content identification information.
12. methods according to any one of claim 9 to 11, is characterized in that, described indication information comprises any one in the following or appoints multinomial:
The address information of content of multimedia on asked multimedia server of-described program request;
The length of the content of multimedia of-described program request and at least part of content.
The control device of 13. 1 kinds of free online multimedium contents in the user terminal, wherein, comprise, address information acquisition device, for obtaining the address information of described content of multimedia on multimedia server, on-demand device, for carrying out the program request of described content of multimedia according to this address information, this control device also comprises:
Indication information acquisition device, for according to described address information, obtains the indication information of described content of multimedia;
Node resource acquisition device, for according to described indication information, when comprising described content of multimedia in one or more point to point network resource, obtains the resource related information of described one or more point to point network resource;
First judgment means, for according to described address information, judges whether comprise described content of multimedia in described one or more point to point network resource;
Second judgment means, for when not finding described one or more point to point network resource according to described address information, according to length and at least part of content of the content of multimedia of program request, judge whether comprise described content of multimedia in described one or more point to point network resource;
Program request accelerator, for according to described resource related information, accelerates described program request.
14. control device according to claim 13, is characterized in that, described indication information comprises following any one or whole:
-described address information;
The length of the content of multimedia of-described program request and at least part of content;
Described node resource acquisition device also comprises:
First content mark acquisition device, for according to described indication information, obtains the first content identification information corresponding with described indication information;
Described node resource acquisition device also for, according to described first content identification information, obtain the node related information of the point to point network resource of the burst comprising content corresponding to described first content identification information;
Wherein, described program request accelerator also for, according to described node related information, based on point-to-point technology and described point to point network resource, described program request is accelerated.
15. control device according to claim 14, is characterized in that, described first content mark acquisition device also comprises:
Indication information generator, for being supplied to first network server by described indication information;
Described first content mark acquisition device also for, obtain the described first content identification information corresponding with described indication information from described first network server.
16. control device according to claims 14 or 15, it is characterized in that, described node resource acquisition device also comprises:
First content mark generator, for being supplied to second network server by described first content identification information;
Node resource acquisition device also for, obtain the described node related information comprising the point to point network resource of the burst of the content corresponding to described first content identification information from described second network server.
17. control device according to claim 15, is characterized in that,
When according to described address information, when failing to find the described one or more point to point network resource comprising described content of multimedia, described control device also comprises:
Second content identification generating apparatus, for after completing described program request, generates second content identification information corresponding with the content of multimedia of described program request;
First annunciator, for described second content identification information and described indication information are reported to described first network server, and is reported to second network server by the node related information of described user terminal.
18. control device according to claim 17, is characterized in that, when according to described address information, when finding the described one or more point to point network resource comprising described content of multimedia, described control device also comprises:
Whether processing unit is corresponding with the content of multimedia of request for judging the described content of multimedia that described one or more point to point network resource comprises; If not corresponding, then only from content of multimedia described in described multimedia server program request.
19. control device according to claim 18, described processing unit also comprises:
Pre-acquiring device, for also obtaining the file size of described content of multimedia respectively respectively from described one or more point to point network resource and described multimedia server pre-program request part content of multimedia;
Comparison means, according to file size and at least part of file content of the described content of multimedia obtained respectively from described one or more point to point network Energy Resources Service and described multimedia server, judges that whether two content of multimedia are identical; If not identical, then only from content of multimedia described in described multimedia server program request.
20. control device according to claim 19, is characterized in that, also comprise:
Second annunciator, if for not identical, after completing described program request, generate second content identification information corresponding with the content of multimedia of described program request, and be corresponding with described second content identification information to indication information described in described first network server feedback.
In first network server, download the first servicing unit of content of multimedia for assist user terminal, wherein, comprise the following steps for 21. 1 kinds:
First acquisition device, for obtaining the indication information from described user terminal; Wherein, described indication information comprises address information, when not finding the first content identification information of described content of multimedia according to described address information, according to length and at least part of content of the described content of multimedia of program request, search the first content identification information of described content of multimedia;
First generator, for according to described indication information, obtains the first content identification information of described content of multimedia, and described first content identification information is supplied to described user terminal.
22. first servicing units according to claim 21, it is characterized in that, the indication information of one or more content of multimedia and the corresponding relation of multimedia first content identification information is stored in described first network server, described first generator also for, according to described address information and the indication information of described one or more content of multimedia and the corresponding relation of multimedia first content identification information, obtain the first content identification information of described content of multimedia.
23. first servicing units according to claim 22, is characterized in that, also comprise:
Report acquisition device, the state updating information that the corresponding relation for the described indication information that obtains the second content identification information of reporting from described user terminal and/or report from described user terminal and described first content identification information changes;
Updating device, for according to described second content identification information and/or described state updating information, creates or upgrades the indication information of described one or more content of multimedia and the corresponding relation of described first content identification information.
24. the first servicing units according to any one of claim 21 to 22, is characterized in that, described indication information comprises any one in the following or appoints multinomial:
The address information of content of multimedia on asked multimedia server of-described program request;
The length of the content of multimedia of-described program request and at least part of content.
25. 1 kinds of user terminals, comprise according to claim 13 to the control device for free online multimedium content according to any one of 20.
26. 1 kinds of first network servers, comprise the first servicing unit downloading content of multimedia for assist user terminal according to any one of claim 21 to 24.
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| CN102868938B (en) * | 2011-07-07 | 2018-06-05 | 上海聚力传媒技术有限公司 | A kind of method and apparatus for being used to obtain segmented video files in network |
| CN102984223B (en) * | 2012-11-14 | 2016-03-02 | 华为技术有限公司 | A kind of message method, the network equipment and system |
| CN103118277B (en) * | 2013-02-22 | 2016-04-06 | 北京暴风科技股份有限公司 | A kind of video acceleration method |
| CN103686430A (en) * | 2013-12-24 | 2014-03-26 | 中国联合网络通信集团有限公司 | Video file acquisition method and device |
| CN104811750A (en) * | 2014-01-23 | 2015-07-29 | 北京风行在线技术有限公司 | Method and device used for playing video in P2P peers and system |
| CN104980815A (en) * | 2014-04-03 | 2015-10-14 | 南京汇智明华信息科技有限公司 | On-line video-on-demand system based on P2P |
| CN108683519A (en) * | 2018-04-08 | 2018-10-19 | 安徽展航信息科技发展有限公司 | A kind of Internet exportation acceleration system |
| CN111294617A (en) * | 2020-02-13 | 2020-06-16 | 深圳市云歌人工智能技术有限公司 | Video playing method and device and storage medium |
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| CN101163156A (en) * | 2007-09-27 | 2008-04-16 | 腾讯科技（深圳）有限公司 | Method, client terminal and system of obtaining network resource |
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