CN103024082B - A kind of Point-to-point Communication Method for Digital Media distribution - Google Patents
A kind of Point-to-point Communication Method for Digital Media distribution Download PDFInfo
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Abstract
The invention provides a kind of Point-to-point Communication Method for Digital Media distribution, in document distribution system, introduce a dispatch server, terminal itself included in dissemination system simultaneously, both for download file, also provide file to other-end simultaneously, become a distribution node, complete terminal and terminal by dispatch server, being connected and penetrating between terminal and file server, can directly share file between terminal. The inventive method is the distribution of multiple spot multi-to-multi, and the distribution requirements of satisfying magnanimity media reduces the distribution pressure of server greatly.
Description
[technical field]
The present invention relates to a kind of Point-to-point Communication Method for Digital Media distribution.
[background technology]
Digital signage system is to have timeliness to ensure communication system, and communication system has clear and definite file source,And in needing at the appointed time, to ensure that the interior all nodes of system all download to the file of the file content of appointmentDistribution environment. Existing digital signage is widely used FTP as file server system, as single-pointServer system, advantage is to dispose simply, controllability is relatively good; But shortcoming also clearly, as distributionEfficiency is lower, concurrent connection number amount is limited, needs to introduce the even multistage FTP of secondary for this reason and adapts toThe network demand of large scale deployment etc. Original terminal is because performance is lower, cannot be in played file,For other-end provides file service, and new terminal improves a lot in performance, completely canIn playing, carry out download and file distributing at a high speed.
[summary of the invention]
The technical problem to be solved in the present invention, is to provide a kind of and leads to for the point-to-point of Digital Media distributionLetter method, from single-point one-to-many distribution, changes the distribution that becomes multiple spot multi-to-multi by file, simplification pointSend out agreement, the distribution requirements of satisfying magnanimity media, also includes terminal itself in distribution system in simultaneously, becomesBe a distribution node, greatly reduce the distribution pressure of server.
The present invention is achieved in that a kind of Point-to-point Communication Method for Digital Media distribution, at literary compositionIn part dissemination system, introduce a dispatch server, terminal itself included in dissemination system simultaneously, both forDownload file, also provides file to other-end simultaneously, becomes a distribution node, by dispatch serverComplete terminal and terminal, being connected and penetrating between terminal and file server, makes file between terminalCan directly share.
The present invention can be further: described method comprises system operation main flow, terminal day-to-day operation streamJourney, terminal are initiated main flow and terminal and the terminal document distribution flow of file server; Described systemOperation main flow: initiate material by user in management platform and add task, file server downloading task;Described terminal day-to-day operation flow process: comprise that timing is connected with dispatch server, reports in had fileHold; Described terminal is initiated the main flow of file server: file polling is carried out in a. requesting terminal in inside,If other-end has this file, can directly respond, and Transmit message, if system is Intranet fortuneRow mode, file server response file inquiry request; B. file is not found in Intranet in requesting terminalSituation under, send download request to dispatch server, request content include file MD5 value and filePath, has this file if find certain terminal of another networking, simultaneously in can service state,This terminal is a target terminal, sends the link information of this target terminal; C. there is no the terminal that can serveIn situation, provide service by file server; Described terminal and terminal document distribution flow: based on describedStep b in the main flow of terminal initiation file server, gathers around documentary target terminal if found,And target terminal is in can service scenario, by file server trigger request terminal and target terminal simultaneouslySend and penetrate message to the other side, after penetrating successfully, target terminal is to requesting terminal Transmit message.
The present invention can be further: described system is used UDP message to control message and datagramReliable UDP agreement is introduced in the transmission of literary composition simultaneously, guarantees the integrality of data; The file team of this systemRow manage in internal memory with terminal queue; Described system adopts minimal cache technology, by described fileServer is divided into a main file server and at least one branch file server, and described main file server is protectedStay all material file, described branch file server only retains up-to-date file, in certain timelinessFile, if the file of terminal request does not exist, this branch's file server can be same with main file serverStep is obtained this file.
The present invention can be further: the dispatch server in described system is responsible for terminal management, file rowTable management and search function, dispatch server is preserved the fileinfo of all terminals, and fileinfo is only usedThis file content MD5 value is carried out unique expression, and the file polling of all terminals all enters based on this MD5 valueOK, the filename of file and file size are provided by file server or terminal that file is provided, schedulingServer is not preserved this information.
The present invention can be further: described dispatch server provides webservice interface, calls thisWebservice interface obtains the running status of dispatch server, terminal quantity and institute's service terminal of connectionQuantity information.
System operation main flow of the present invention specifically comprises:
Step 11, user upload material by HTTP mode;
Step 12, management platform distribution downloading task;
Step 13, terminal are accepted downloading task, initiate inquiry request to dispatch server;
Step 14, the linked queue of dispatch server retrieving files, send front 5 orders that have this fileMark terminal address is to requesting terminal, if do not have target terminal to serve, Transmit message server address is givenRequesting terminal.
Terminal day-to-day operation flow process of the present invention specifically comprises:
Step 21, logs in dispatch server, return terminal internal address, dispatch server feedback terminalOuter net address and internal address, require terminal to return the file content having simultaneously;
Step 22, terminal is reported the All Files content having, and this file content is GUID value;
Step 23, terminal is opened monitor process and heart time, if having file request, Transmit messageGive requesting terminal;
Step 24, heart time arrives, and sends heartbeat message to server.
Terminal of the present invention and terminal document distribution flow specifically comprise:
The outer net address of target terminal is initiated to be connected in step 31, requesting terminal, if successful connection is openedBeginning file is downloaded, if connection failure starts and penetrates mechanism, after cannot successfully penetrating, changes nextTarget terminal, if request is initiated in all failures to main FTP address;
After step 32, requesting terminal successful connection, Transmit message segment download request;
Step 33, receiving target terminal message, resolve and verification by after deposit buffer memory in;
Step 34, by synthetic the slice groups of accepting complete file, again carry out full text verification, if schoolTest successfully, the file of renaming, if verification failure is downloaded again;
Step 35, download, reported the GUID value of newly-increased file.
Terminal of the present invention is downloaded flow process to file server and is specifically comprised:
The outer net address of file server is initiated to be connected in step 41, requesting terminal, if successful connection,Start file and download, if request is initiated in connection failure to main FTP address;
After step 42, requesting terminal successful connection, Transmit message inquiry request, include file complete trailsWith GUID value;
Step 43, file server receive this request, search local file queue, if file existsAnd for can service state returning and can download, otherwise return to wait, file server can be according to receivingFile address go ftp server to download this file, after having downloaded, will become can service document;
After step 44, requesting terminal successful connection, Transmit message segment download request;
Step 45, receive file server message, resolve and verification by after deposit buffer memory in;
Step 46, by synthetic the slice groups of accepting complete file, again carry out full text verification, if schoolTest successfully, the file of renaming, if verification failure is downloaded again;
Step 47, download, reported the GUID value of newly-increased file. Now file server phaseWhen in preferably target terminal of a service ability.
Tool of the present invention has the following advantages: the inventive method is by file from the distribution of single-point one-to-many, and change becomesThe distribution of multiple spot multi-to-multi, the distribution protocol of simplification, the distribution requirements of satisfying magnanimity media also will simultaneouslyTerminal itself is included in distribution system, becomes a distribution node, greatly reduces the distribution pressure of server.The inventive method completes terminal and terminal by dispatch server, between terminal and file server be connected withPenetrate, making between terminal file directly share becomes possibility, and main file server only needs limited number of timesDownload, just can share by terminal room, complete the downloading process of all terminals, thereby greatly reduce mainThe download pressure of file server; By UDP connectionless-mode, dispatch server can provide far awayHigher than the concurrent connection of TCP mode, the maximum number of connections in theory can back-up system allowing, simultaneouslyAlso can carry out very easily fire wall and penetrate, expand the scope of application; Use MD5 value representation file,Can use minimum memory headroom to preserve the fileinfo of all terminals, have 1000 with a station terminalIndividual file is example, once completes report, only needs 32000 bytes, by a UDP message transmissions8K calculates, and only needs 4 messages just can complete transmission, and server only retains terminal and file simultaneouslyMapping, UID (8)-> GUID (32) is individual, recall precision is very high; P2P file serviceDevice is the backup of main file server, in system with terminal in identical position, therefore this serverDeployment very flexible, and possess clustering functionality, can dispose by separate unit, also can many deployment, can be wideGeneral being applied to resembles digital signage etc. and has timeliness and ensure in communication system.
[brief description of the drawings]
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the document distribution system structural representation of the inventive method.
[detailed description of the invention]
As shown in Figure 1, the Point-to-point Communication Method for Digital Media distribution of the present invention, sets up a literary compositionPart dissemination system, this system comprises dispatch server, file server and terminal, described dispatch serviceDevice is responsible for terminal management, listed files management and search function; Described file server is responsible for initial literary compositionPart distribution, can be used original ftp server; Described terminal, for download file, is also given simultaneouslyOther-end provides file.
System of the present invention is used UDP message to control the transmission of message and data message, simultaneouslyIntroduce reliable UDP agreement, guarantee the integrality of data; Document queue and the terminal queue of this system existIn internal memory, manage, guarantee real-time and the actual effect of information by synchronous protocol, avoid database to visitAsk the problem of deadlock bringing and so on, can rapid deployment; Described system adopts minimal cache technology, willDescribed file server is divided into a main file server and at least one branch file server, described master fileServer retains all material file, and described branch file server only retains up-to-date file, certainFile in timeliness, if the file of terminal request does not exist, this branch's file server meeting and master fileServer sync is obtained this file, can guarantee like this High-effective Service of file server, also can save simultaneouslyAbout space.
In system of the present invention, dispatch server plays a part most crucial, is responsible for terminal management, fileList management and search function, dispatch server is preserved the fileinfo of all terminals, and fileinfo is onlyCarry out unique expression by this file content MD5 value, the file polling of all terminals is all based on this MD5 valueCarry out, the filename of file and file size are provided by file server or terminal that file is provided, adjustDegree server is not preserved this information.
Described dispatch server provides webservice interface, calls this webservice interface and obtains schedulingThe running status of server, the terminal quantity of connection and institute's service terminal quantity information.
The inventive method is in document distribution system, to introduce a dispatch server, terminal itself is received simultaneouslyEnter in dissemination system, both for download file, also provide file to other-end, become one point simultaneouslySend out node, complete terminal and terminal by dispatch server, being connected and wearing between terminal and file serverThoroughly, file between terminal can directly be shared. The inventive method comprises system operation main flow, terminalDay-to-day operation flow process, terminal are initiated main flow and terminal and the terminal document distribution flow of file serverJourney.
Described system operation main flow: initiate material by user in management platform and add task, file serviceDevice downloading task; Concrete steps are as follows:
Step 11, user upload material by HTTP mode;
Step 12, management platform distribution downloading task;
Step 13, terminal are accepted downloading task, initiate inquiry request to dispatch server;
Step 14, the linked queue of dispatch server retrieving files, send front 5 orders that have this fileMark terminal address is to requesting terminal, if do not have target terminal to serve, Transmit message server address is givenRequesting terminal.
Described terminal day-to-day operation flow process: comprise that timing is connected with dispatch server, reports had literary compositionPart content; Concrete steps are as follows:
Step 21, logs in dispatch server, and return terminal internal address, outside server feedback terminalNet address and internal address require terminal to return the file content having simultaneously;
Step 22, terminal is reported the All Files content having, and this file content is GUID value;
Step 23, terminal is opened monitor process and heart time, if having file request, Transmit messageGive requesting terminal;
Step 24, heart time arrives, and sends heartbeat message to server.
Described terminal is initiated the main flow of file server: suppose there is A, the terminal of two groups of Intranets of B, AGroup Intranet has terminal AA, terminal AB, terminal AC etc.; B group Intranet has terminal BA, terminalBB, terminal BC etc.;
A. terminal AA carries out file polling as requesting terminal in A net inside, if other-end,As terminal AC has this file, terminal AC, as target terminal, can directly respond, and sendsFile, if system is Intranet operational mode, file server response file inquiry request;
If the in the situation that b. terminal AA not finding file in A net inside, send download request to adjustingDegree server, request content include file MD5 value and file path, if find another networking BCertain terminal BA have this file, simultaneously in can service state, terminal BA be as target terminal,Send the link information of this terminal BA;
In the terminal situation that can serve if c. do not have, provide service by file server;
D: if file server cannot find this file, can go main FTP to download according to terminal request,Feed back to terminal simultaneously, tell terminal to delay and download this file or select from main FTP download.
The concrete steps of the main flow of described terminal initiation file server are as follows:
The outer net address of target terminal is initiated to be connected in step 31, requesting terminal, if successful connection is openedBeginning file is downloaded, if connection failure starts and penetrates mechanism, after cannot successfully penetrating, changes nextTarget terminal, if request is initiated in all failures to main FTP address;
After step 32, requesting terminal successful connection, Transmit message segment download request;
Step 33, receiving target terminal message, resolve and verification by after deposit buffer memory in;
Step 34, by synthetic the slice groups of accepting complete file, again carry out full text verification, if schoolTest successfully, the file of renaming, if verification failure is downloaded again;
Step 35, download, reported the GUID value of newly-increased file.
Described terminal and terminal document distribution flow: the main flow of initiating file server based on described terminalIn step b, gather around documentary terminal BA if found, and terminal BA is in can service scenario,Send and penetrate message to the other side simultaneously by file server initiating terminal AA and terminal BA, penetrate successfullyAfterwards, terminal BA is to terminal AA Transmit message.
Described terminal is downloaded flow process to file server and can specifically be comprised:
The outer net address of file server is initiated to be connected in step 41, requesting terminal, if successful connection,Start file and download, if request is initiated in connection failure to main FTP address;
After step 42, requesting terminal successful connection, Transmit message inquiry request, include file complete trailsWith GUID value;
Step 43, file server receive this request, search local file queue, if file existsAnd for can service state returning and can download, otherwise return to wait, file server can be according to receivingFile address go ftp server to download this file, after having downloaded, will become can service document;
After step 44, requesting terminal successful connection, Transmit message segment download request;
Step 45, receive file server message, resolve and verification by after deposit buffer memory in;
Step 46, by synthetic the slice groups of accepting complete file, again carry out full text verification, if schoolTest successfully, the file of renaming, if verification failure is downloaded again;
Step 47, download, reported the GUID value of newly-increased file.
The inventive method from the distribution of single-point one-to-many, changes the distribution that becomes multiple spot multi-to-multi, letter by fileThe distribution protocol of changing, the distribution requirements of satisfying magnanimity media, also includes terminal itself in distribution system simultaneouslyIn, become a distribution node, greatly reduce the distribution pressure of server.
The inventive method completes terminal and terminal by dispatch server, the company between terminal and file serverConnect and penetrate, making between terminal file directly share becomes possibility, and main file server only needs limitedThe download of number of times, just can share by terminal room, completes the downloading process of all terminals, thereby greatly fallsThe download pressure of low main file server; By UDP connectionless-mode, dispatch server can provideFar away higher than the concurrent connection of TCP mode, the maximum number of connections in theory can back-up system allowing,Also can carry out very easily fire wall and penetrate, expand the scope of application simultaneously; Use MD5 value to represent literary compositionPart, can use minimum memory headroom to preserve the fileinfo of all terminals, has with a station terminal1000 files are example, once complete report, only need 32000 bytes, by a UDP messageTransmission 8K calculates, and only needs 4 messages just can complete transmission, simultaneously server only retain terminal andThe mapping of file, UID (8)-> GUID (32) is individual, and recall precision is very high; P2P fileServer is the backup of main file server, in system with terminal in identical position, therefore these clothesThe deployment of business device is very flexible, and possesses clustering functionality, can dispose by separate unit, also can many deployment.
Although more than described the specific embodiment of the present invention, be familiar with the technology people of the artMember should be appreciated that our described specific embodiment is illustrative, instead of for to thisThe restriction of bright scope, those of ordinary skill in the art are equivalent what do according to spirit of the present inventionModify and change, all should be encompassed in the scope that claim of the present invention protects.
Claims (8)
1. the Point-to-point Communication Method for Digital Media distribution, it is characterized in that: in document distribution system, introduce a dispatch server, terminal itself included in dissemination system simultaneously, both for download file, also provide file to other-end simultaneously, become a distribution node, complete terminal and terminal by dispatch server, being connected and penetrating between terminal and file server, can directly share file between terminal; Dispatch server in described system is responsible for terminal management, listed files management and search function, dispatch server is preserved the fileinfo of all terminals, fileinfo only carrys out unique expression by this file content MD5 value, the file polling of all terminals all carries out based on this MD5 value, the filename of file and file size are provided by file server or terminal that file is provided, and dispatch server is not preserved this information; Terminal is reported the GUID value of the All Files having to dispatch server; The linked queue of dispatch server retrieving files, sends front 5 destination terminal addresses that have this file to requesting terminal.
2. a kind of Point-to-point Communication Method for Digital Media distribution according to claim 1, is characterized in that:
Described method comprises main flow and terminal and the terminal document distribution flow of system operation main flow, terminal day-to-day operation flow process, terminal initiation file server;
Described system operation main flow: initiate material by user in management platform and add task, file server downloading task;
Described terminal day-to-day operation flow process: comprise that timing is connected with dispatch server, reports had file content;
Described terminal is initiated the main flow of file server:
A. file polling is carried out in requesting terminal in inside, if other-end has this file, can directly respond, and Transmit message, if system is Intranet operational mode, file server response file inquiry request;
B. requesting terminal is not in the situation that Intranet finds file, send download request to dispatch server, request content include file MD5 value and file path, have this file if find certain terminal of another networking, simultaneously in can service state, this terminal is a target terminal, sends the link information of this target terminal;
C., in the terminal situation that does not have to serve, provide service by file server;
Described terminal and terminal document distribution flow:
Step b in main flow based on described terminal initiation file server, gather around documentary target terminal if found, and target terminal is in can service scenario, send and penetrate message to the other side simultaneously by file server trigger request terminal and target terminal, after penetrating successfully, target terminal is to requesting terminal Transmit message.
3. a kind of Point-to-point Communication Method for Digital Media distribution according to claim 2, is characterized in that: described system is used UDP message to control the transmission of message and data message, introduces reliable UDP agreement simultaneously, guarantees the integrality of data; Document queue and the terminal queue of this system manage in internal memory; Described system adopts minimal cache technology, described file server is divided into a main file server and at least one branch file server, described main file server retains all material file, described branch file server only retains up-to-date file, it is the file in certain timeliness, if the file of terminal request does not exist, this branch's file server can be synchronizeed with main file server and obtained this file.
4. according to a kind of Point-to-point Communication Method for Digital Media distribution described in claims 1 to 3 any one, it is characterized in that: described dispatch server provides webservice interface, call the running status that this webservice interface obtains dispatch server, terminal quantity and institute's service terminal quantity information of connection.
5. a kind of Point-to-point Communication Method for Digital Media distribution according to claim 2, is characterized in that: described system operation main flow specifically comprises:
Step 11, user upload material by HTTP mode;
Step 12, management platform distribution downloading task;
Step 13, terminal are accepted downloading task, initiate inquiry request to dispatch server;
Step 14, the linked queue of dispatch server retrieving files, send front 5 destination terminal addresses that have this file to requesting terminal, if do not have target terminal to serve, Transmit message server address is to requesting terminal.
6. a kind of Point-to-point Communication Method for Digital Media distribution according to claim 2, is characterized in that: described terminal day-to-day operation flow process specifically comprises:
Step 21, logs in dispatch server, return terminal internal address, and outer net address and the internal address of dispatch server feedback terminal require terminal to return the file content having simultaneously;
Step 22, terminal is reported the All Files content having, and this file content is GUID value;
Step 23, terminal is opened monitor process and heart time, if there is file request, Transmit message is to requesting terminal;
Step 24, heart time arrives, and sends heartbeat message to server.
7. a kind of Point-to-point Communication Method for Digital Media distribution according to claim 2, is characterized in that: described terminal and terminal document distribution flow specifically comprise:
The outer net address of target terminal is initiated to be connected in step 31, requesting terminal, if successful connection starts file and downloads, if connection failure, starts and penetrates mechanism, after cannot successfully penetrating, change next target terminal, if request is initiated in all failures to main FTP address;
After step 32, requesting terminal successful connection, Transmit message segment download request;
Step 33, receiving target terminal message, resolve and verification by after deposit buffer memory in;
Step 34, by synthetic the slice groups of accepting complete file, again carry out full text verification, if verification succeeds, the file of renaming, if verification failure, download again;
Step 35, download, reported the GUID value of newly-increased file.
8. a kind of Point-to-point Communication Method for Digital Media distribution according to claim 2, is characterized in that: described terminal is downloaded flow process to file server and specifically comprised:
The outer net address of file server is initiated to be connected in step 41, requesting terminal, if successful connection starts file and downloads, if request is initiated in connection failure to main FTP address;
After step 42, requesting terminal successful connection, Transmit message inquiry request, include file complete trails and GUID value;
Step 43, file server receive this request, search local file queue, if file exist and for can service state returning and can download, otherwise return to wait, file server can go ftp server to download this file according to the file address receiving, after download completes, will become can service document;
After step 44, requesting terminal successful connection, Transmit message segment download request;
Step 45, receive file server message, resolve and verification by after deposit buffer memory in;
Step 46, by synthetic the slice groups of accepting complete file, again carry out full text verification, if verification succeeds, the file of renaming, if verification failure, again download;
Step 47, download, reported the GUID value of newly-increased file.
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| CN105227659B (en) * | 2015-09-30 | 2018-12-28 | 深圳市先河系统技术有限公司 | A kind of network communication method and equipment |
| CN106713483B (en) * | 2017-01-11 | 2020-11-10 | 北京猎鹰安全科技有限公司 | Distributed software distribution method |
| CN107438098B (en) * | 2017-07-17 | 2020-06-23 | 网宿科技股份有限公司 | Dynamic content distribution method and system |
| CN107846405B (en) * | 2017-10-31 | 2020-11-10 | 北京百悟科技有限公司 | Control system for internal and external network file mutual access and implementation method |
| CN107682210A (en) * | 2017-11-10 | 2018-02-09 | 北京明朝万达科技股份有限公司 | A kind of data updating method and system based on mixed transmission modes |
| CN108366097B (en) * | 2018-01-18 | 2021-02-12 | 北京奇艺世纪科技有限公司 | Resource access control method and system |
| CN108234676A (en) * | 2018-03-06 | 2018-06-29 | 上海京颐科技股份有限公司 | The data download method and device of medical terminal, storage medium, server, terminal |
| CN111092741B (en) * | 2018-10-24 | 2022-04-29 | 玲珑视界科技（北京）有限公司 | System and method for distributing files through multicast channel |
| CN109981780A (en) * | 2019-03-27 | 2019-07-05 | 深圳市网心科技有限公司 | A kind of dispatching method, node device, scheduling system and storage medium |
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