CN104702582A - Method and device for transmitting data - Google Patents
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- CN104702582A CN104702582A CN201310666536.2A CN201310666536A CN104702582A CN 104702582 A CN104702582 A CN 104702582A CN 201310666536 A CN201310666536 A CN 201310666536A CN 104702582 A CN104702582 A CN 104702582A
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Abstract
The invention discloses a method and a device for transmitting data. The method and the device have the advantages that problems of high inter-node connection relation establishment failure rate and poor system performance when connection relations between two nodes are established in the prior art can be solved by the aid of the method and the device; particularly, a first channel and a second channel between a request node and a target node are respectively created by the target node, so that the problem of high failure rate due to the fact that bidirectional connection channels are directly created can be solved; parts of the data can be transmitted to the request node by the target node via the first channel or the second channel after the first channel or the second channel is completely created, data communication can be carried out without waiting for completion of creation of bidirectional channels, accordingly, the problem of incapability of transmitting large quantities of data can be solved, and the system performance can be effectively improved.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of data transmission method and device.
Background technology
Along with the develop rapidly of multimedia technology, various ways can be adopted to carry out transmission and the broadcasting of Streaming Media, wherein, P2P(Peer to Peer; Point-to-point) stream media system is a kind of conventional streaming media and Play System.
In existing point-to-point stream media system, streaming medium content is cut into multiple data block (chunk), using each data block as the base unit of transmission of flow media data, thus complete continuous print data flow and transmit between node (Peer), wherein, each data block is represented by unique chunk id.Sharing and exchanging the buffered message (being called for short BM) all depending on the description node buffer status exchanged between node of programme content, namely completes sharing of programme content by buffered message and exchanges.
Multiple node is comprised at point-to-point stream media system, when the connection establishment request message that target node accepts requesting node sends, namely set up between destination node and requesting node and be bi-directionally connected passage, when this be bi-directionally connected Path Setup complete time, destination node can send message to requesting node and receive the message of requesting node transmission, in like manner, requesting node also can send the message of message and the transmission of receiving target node to destination node.Adopt technique scheme time, between destination node and requesting node set up be bi-directionally connected passage, when above-mentioned be bi-directionally connected Path Setup success after, destination node and requesting node just can carry out transfer of data by the above-mentioned passage that is bi-directionally connected; When network quality is poor, to larger difficulty be there is in the above-mentioned foundation being bi-directionally connected passage, thus cause annexation between node to set up the high problem of mortality, and between destination node and requesting node, mass data cannot be transmitted and make systematic function poor.
As can be seen here, prior art is set up in the process of annexation between two nodes, and depositing annexation among the nodes, to set up mortality high, and the problem of systematic function difference.
Summary of the invention
The embodiment of the present invention provides a kind of data transmission method and device, in order to solve in prior art set up annexation between two nodes process in, depositing annexation among the nodes, to set up mortality high, and systematic function difference problem.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
A kind of data transmission method, is applied in point-to-point stream media system, comprises:
After the connection establishment request message that target node accepts requesting node sends, set up the first passage between local and described request node; Described first passage set up complete after, carry out transfer of data between described destination node and described request node;
Described destination node sets up the second channel between local and described request node, when described second channel set up complete after, carry out transfer of data between described destination node and described request node; Wherein, described first passage is sendaisle, and described second channel is receive path, or described first passage is receive path, and described second channel is sendaisle.
Optionally, described destination node judges that described first passage sets up complete method, comprise: when described first passage is sendaisle, when described second channel is receive path, described destination node sends detection packet by described first passage to described request node; In the first preset duration after described destination node sends detection packet, when described destination node obtains the feedback information of described detection packet, determine that described first passage is set up complete.
Adopt technique scheme, judge whether first passage is set up complete by detecting packet, testing process occupying system resources is little, and testing result accurately and reliably.
Further, described destination node is after described first passage is set up unsuccessfully, record described first passage and set up failed number of times, when the failed number of times of described foundation does not reach predetermined threshold value, described destination node re-establishes the first passage between this locality and described request node; When the failed number of times of described foundation reaches predetermined threshold value, described destination node abandons the foundation of described first passage.
Optionally, in the second preset duration, when described first passage is sendaisle, when described second channel is receive path, in the second preset duration after described first passage is set up, when described destination node receives the detection packet of described request node transmission by described second channel, judge that described second channel is set up complete.
Adopt technique scheme, judge whether second channel is set up complete by detecting packet or taking the less data of memory space, testing process occupying system resources is little, and testing result accurately and reliably.
Further, after described destination node judges that described second channel is set up unsuccessfully, record described second channel and set up failed number of times, when the failed number of times of described foundation does not reach predetermined threshold value, described destination node re-establishes the second channel between this locality and described request node; When the failed number of times of described foundation reaches predetermined threshold value, described destination node abandons the foundation of described second channel.
A kind of data transmission method, is applied in point-to-point stream media system, comprises:
Requesting node sends connection establishment request message to destination node, after making described target node accepts to described connection establishment request message, set up the first passage between described request node, and described first passage set up complete after, carry out transfer of data between described request node and described destination node; And
Second channel between described destination node and described request node set up complete after, carry out transfer of data between described request node and described destination node;
Wherein, described first passage is sendaisle, and described second channel is receive path, or described first passage is receive path, and described second channel is sendaisle.
A kind of data transmission device, is applied in point-to-point stream media system, comprises:
First data transmission unit, after receiving connection establishment request message that requesting node sends, sets up the first passage between local and described request node; Described first passage set up complete after, and carry out transfer of data between described request node; ;
Second data transmission unit, for setting up the second channel between this locality and described request node, when described second channel set up complete after, and carry out transfer of data between described request node; Wherein, described first passage is sendaisle, and described second channel is receive path, or described first passage is receive path, and described second channel is sendaisle.
Further, also comprise the first identifying unit, for: send detection packet by described first passage to described request node; Spontaneous censorship is surveyed in the first preset duration after packet, when this locality obtains the feedback information of described detection packet, determines that described first passage is set up complete.
Adopt technique scheme, judge whether first passage is set up complete by detecting packet, testing process occupying system resources is little, and testing result accurately and reliably.
Further, described first identifying unit, also for: after described first passage is set up unsuccessfully, record described first passage and set up failed number of times, when the failed number of times of described foundation does not reach predetermined threshold value, re-establish the first passage between this locality and described request node; When the failed number of times of described foundation reaches predetermined threshold value, abandon the foundation of described first passage.
Further, also comprise the second identifying unit, for: when described first passage is sendaisle, when described second channel is receive path, in the second preset duration after described first passage is set up, when receiving the detection packet that described request node sends locally through described second channel, judge that described second channel is set up complete.
Adopt technique scheme, judge whether second channel is set up complete by detecting packet or taking the less data of memory space, testing process occupying system resources is little, and testing result accurately and reliably.
Further, described second identifying unit, also for: after judging that described second channel is set up unsuccessfully, record described second channel and set up failed number of times, when the failed number of times of described foundation does not reach predetermined threshold value, re-establish the second channel between this locality and described request node; When the failed number of times of described foundation reaches predetermined threshold value, abandon the foundation of described second channel.
A kind of data transmission device, is applied in point-to-point stream media system, comprises:
First data transmission unit, for sending connection establishment request message to destination node, after making described target node accepts to described connection establishment request message, set up and local first passage, and described first passage set up complete after, and carry out transfer of data between described destination node;
Second data transmission unit, for the second channel between described and described destination node set up complete after, and carry out transfer of data between described destination node; Wherein, described first passage is sendaisle, and described second channel is receive path, or described first passage is receive path, and described second channel is sendaisle.
In the embodiment of the present invention, when after the connection establishment request message that target node accepts sends to requesting node, namely the first passage between destination node and requesting node and second channel is set up successively, when above-mentioned first passage or second channel set up complete after, namely destination node is undertaken carrying out transfer of data with requesting node by first passage or second channel.Adopt technical solution of the present invention, set up the first passage between requesting node and destination node and second channel respectively, thus avoid and directly set up the high problem of the mortality that causes when being bi-directionally connected passage; And, when above-mentioned first passage or second channel set up complete after, destination node namely by this first passage or second channel to requesting node transmitting portion data, and need not wait for above-mentioned duplex channel set up complete after just carry out data communication, thus avoid the problem that mass data cannot transmit, effectively improve systematic function.
Accompanying drawing explanation
Fig. 1 is point-to-point Frame of Streaming Media System schematic diagram in the embodiment of the present invention;
Fig. 2 is the detail flowchart one of transfer of data in the embodiment of the present invention;
Fig. 3 is the detail flowchart two of transfer of data in the embodiment of the present invention;
Fig. 4 is the structural representation one of transfer of data in the embodiment of the present invention;
Fig. 5 is the structural representation two of transfer of data in the embodiment of the present invention.
Embodiment
In order to solve in prior art set up annexation between two nodes process in, depositing annexation among the nodes, to set up mortality high, and systematic function difference problem.In the embodiment of the present invention, when after the connection establishment request message that target node accepts sends to requesting node, namely the first passage between destination node and requesting node and second channel is set up successively, when above-mentioned first passage or second channel set up complete after, namely destination node is undertaken carrying out transfer of data with requesting node by first passage or second channel.Adopt technical solution of the present invention, set up the first passage between requesting node and destination node and second channel respectively, thus avoid and directly set up the high problem of the mortality that causes when being bi-directionally connected passage; And, when above-mentioned first passage or second channel set up complete after, destination node namely by this first passage or second channel to requesting node transmitting portion data, and need not wait for above-mentioned duplex channel set up complete after just carry out data communication, thus avoid the problem that mass data cannot transmit, effectively improve systematic function.
The embodiment of the present invention is applied in point-to-point stream media system, consult and Figure 1 shows that point-to-point stream media system structural representation in the embodiment of the present invention, wherein, server is comprised in this point-to-point stream media system, multiple requesting node and the destination node corresponding with each requesting node, below for the annexation process of establishing in point-to-point stream media system between two nodes, by reference to the accompanying drawings the preferred embodiment of the present invention is described in detail.
Consult shown in Fig. 2, in the embodiment of the present invention, the detailed process carrying out transfer of data between destination node and requesting node is:
Step 200: after the connection establishment request message that target node accepts requesting node sends, set up the first passage between local and requesting node, and first passage set up complete after, and carry out transfer of data between requesting node.
In the embodiment of the present invention, requesting node is the node of asking in point-to-point stream media system to establish a connection, and destination node is the node that in the connection establishment request message that requesting node sends, the node identification that carries is corresponding.As can be seen here, in point-to-point stream media system, requesting node and destination node are only relative concept, when in point-to-point stream media system, any node request and other nodes establish a connection, this any node is requesting node, and other nodes above-mentioned are destination node.
Step 210: destination node sets up the second channel between local and requesting node, when second channel set up complete after, carry out transfer of data between destination node and requesting node.
In the embodiment of the present invention, above-mentioned first passage is sendaisle, and second channel is receive path; Or above-mentioned first passage is receive path, second channel is sendaisle.
Optionally, destination node judges whether above-mentioned first passage is set up complete in the following ways: destination node sends detection packet by first passage to requesting node; When sending from destination node in the first preset duration detected after packet, when destination node obtains the feedback information of above-mentioned detection packet, namely determine that above-mentioned first passage is set up complete; Wherein, the first preset duration is the value pre-set as the case may be.Adopt technique scheme, judge whether first passage is set up complete by detecting packet, testing process occupying system resources is little, and testing result accurately and reliably.
Optionally, after above-mentioned first passage is set up unsuccessfully, destination node can re-establish the first passage between requesting node, also can abandon the foundation of first passage between requesting node, be specially:
Failed number of times set up by the above-mentioned second channel of destination node record, when the number of times of this foundation failure does not reach predetermined threshold value, destination node re-establishes the first passage between this locality and requesting node, when the number of times of this foundation failure reaches predetermined threshold value, destination node sends warning information, point out because failure cause causes the annexation cannot set up between this locality and requesting node, destination node abandons the foundation of first passage between requesting node simultaneously, further, destination node can after wait preset duration, re-establish the first passage between requesting node, after destination node also can set up request message in the annexation again receiving requesting node transmission, re-establish above-mentioned first passage, wherein, above-mentioned predetermined threshold value and preset duration can pre-set as the case may be.
In addition, after above-mentioned first passage is set up unsuccessfully, destination node can also re-establish the first passage between this locality and requesting node, until above-mentioned second channel is set up complete.
In the embodiment of the present invention, when above-mentioned first passage set up complete after, namely set up the second channel between destination node and requesting node.When first passage is sendaisle, when second channel is receive path, in the second preset duration, after destination node judges that above-mentioned second channel is set up, namely destination node determines that the annexation between this locality and requesting node is set up complete.Wherein, destination node judge the second channel between requesting node set up complete mode as: in the second preset duration, when destination node by second channel receive requesting node send detection packet time, judge that above-mentioned second channel is set up complete.In above process, the second preset duration can pre-set as the case may be.Adopt technique scheme, judge whether second channel is set up complete by detecting packet, testing process occupying system resources is little, and testing result accurately and reliably.
Optionally, in the second preset duration, when above-mentioned second channel is set up unsuccessfully, destination node can re-establish the second channel between requesting node, also can abandon the foundation of second channel between requesting node, be specially:
Failed number of times set up by the above-mentioned second channel of destination node record, and when the failed number of times of described foundation does not reach predetermined threshold value, destination node re-establishes the second channel between this locality and requesting node; When the number of times of above-mentioned foundation failure reaches predetermined threshold value, destination node sends warning information, point out because failure cause causes the annexation cannot set up between this locality and requesting node, destination node abandons the foundation of second channel between requesting node simultaneously.Further, destination node after wait preset duration, can re-establish the second channel between requesting node.
In addition, after above-mentioned second channel is set up unsuccessfully, destination node can also re-establish the second channel between this locality and requesting node, until above-mentioned second channel is set up complete.
Consult shown in Fig. 3, in the embodiment of the present invention, the detailed process carrying out transfer of data between destination node and requesting node is:
Step 300: requesting node sends connection establishment request message to destination node, after making target node accepts arrive this connection establishment request message, set up with requesting node between first passage, and first passage set up complete after, carry out transfer of data between requesting node and destination node.
Step 310: the second channel between requesting node and destination node set up complete after, carry out transfer of data between requesting node and destination node.
In the embodiment of the present invention, first passage is sendaisle, and second channel is receive path, or first passage is receive path, and second channel is sendaisle.
Based on technique scheme, consult shown in Fig. 4, the invention provides a kind of data transmission device, comprise first data transmission unit 40, second data transmission unit 41, wherein:
First data transmission unit 40, after receiving connection establishment request message that requesting node sends, sets up the first passage between local and described request node; Described first passage set up complete after, and carry out transfer of data between described request node;
Second data transmission unit 41, for setting up the second channel between this locality and described request node, when described second channel set up complete after, and carry out transfer of data between described request node; Wherein, described first passage is sendaisle, and described second channel is receive path, or described first passage is receive path, and described second channel is sendaisle.
Further, said apparatus also comprises the first identifying unit 42, for: when described first passage is sendaisle, when described second channel is receive path, send detection packet by described first passage to described request node; Spontaneous censorship is surveyed in the first preset duration after packet, when this locality obtains the feedback information of described detection packet, determines that described first passage is set up complete.
Further, said apparatus also comprises the second identifying unit 43, for: when described first passage is sendaisle, when described second channel is receive path, in the second preset duration after described first passage is set up, when receiving the detection packet that described request node sends locally through described second channel, judge that described second channel is set up complete.
Consult shown in Fig. 5, the invention provides a kind of data transmission device, comprise first data transmission unit 50, second data transmission unit 51, wherein:
First data transmission unit 50, for sending connection establishment request message to destination node, after making described target node accepts to described connection establishment request message, set up and local first passage, and described first passage set up complete after, and carry out transfer of data between described destination node;
Second data transmission unit 51, for the second channel between described and described destination node set up complete after, and carry out transfer of data between described destination node; Wherein, described first passage is sendaisle, and described second channel is receive path, or described first passage is receive path, and described second channel is sendaisle.
In sum, in the embodiment of the present invention, after the connection establishment request message that target node accepts requesting node sends, set up the first passage between local and requesting node, and first passage set up complete after, and carry out transfer of data between requesting node; Destination node sets up the second channel between local and requesting node, when second channel set up complete after, carry out transfer of data between destination node and requesting node.Adopt technical solution of the present invention, set up the first passage between requesting node and destination node and second channel respectively, thus avoid and directly set up the high problem of the mortality that causes when being bi-directionally connected passage; And, when above-mentioned first passage or second channel set up complete after, destination node namely by this first passage or second channel to requesting node transmitting portion data, and need not wait for above-mentioned duplex channel set up complete after just carry out data communication, thus avoid the problem that mass data cannot transmit, effectively improve systematic function.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the embodiment of the present invention and not depart from the spirit and scope of the embodiment of the present invention.Like this, if these amendments of the embodiment of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (12)
1. a data transmission method, is applied in point-to-point stream media system, it is characterized in that, comprising:
After the connection establishment request message that target node accepts requesting node sends, set up the first passage between local and described request node; Described first passage set up complete after, carry out transfer of data between described destination node and described request node;
Described destination node sets up the second channel between local and described request node, when described second channel set up complete after, carry out transfer of data between described destination node and described request node; Wherein, described first passage is sendaisle, and described second channel is receive path, or described first passage is receive path, and described second channel is sendaisle.
2. the method for claim 1, is characterized in that, described destination node judges that described first passage sets up complete method, comprising:
Described destination node sends detection packet by described first passage to described request node;
In the first preset duration after described destination node sends detection packet, when described destination node obtains the feedback information of described detection packet, determine that described first passage is set up complete.
3. method as claimed in claim 2, it is characterized in that, described method comprises further:
Described destination node is after described first passage is set up unsuccessfully, record described first passage and set up failed number of times, when the failed number of times of described foundation does not reach predetermined threshold value, described destination node re-establishes the first passage between this locality and described request node; When the failed number of times of described foundation reaches predetermined threshold value, described destination node abandons the foundation of described first passage.
4. the method for claim 1, is characterized in that, when described first passage is sendaisle, when described second channel is receive path, described destination node judges that complete method set up by described second channel, comprising:
In the second preset duration after described first passage is set up, when described destination node receives the detection packet of described request node transmission by described second channel, judge that described second channel is set up complete.
5. method as claimed in claim 4, it is characterized in that, described method comprises further:
After described destination node judges that described second channel is set up unsuccessfully, record described second channel and set up failed number of times, when the failed number of times of described foundation does not reach predetermined threshold value, described destination node re-establishes the second channel between this locality and described request node; When the failed number of times of described foundation reaches predetermined threshold value, described destination node abandons the foundation of described second channel.
6. a data transmission method, is applied in point-to-point stream media system, it is characterized in that, comprising:
Requesting node sends connection establishment request message to destination node, after making described target node accepts to described connection establishment request message, set up the first passage between described request node, and described first passage set up complete after, carry out transfer of data between described request node and described destination node; And
Second channel between described destination node and described request node set up complete after, carry out transfer of data between described request node and described destination node;
Wherein, described first passage is sendaisle, and described second channel is receive path, or described first passage is receive path, and described second channel is sendaisle.
7. a data transmission device, is applied in point-to-point stream media system, it is characterized in that, comprising:
First data transmission unit, after receiving connection establishment request message that requesting node sends, sets up the first passage between local and described request node; Described first passage set up complete after, and carry out transfer of data between described request node; ;
Second data transmission unit, for setting up the second channel between this locality and described request node, when described second channel set up complete after, and carry out transfer of data between described request node; Wherein, described first passage is sendaisle, and described second channel is receive path, or described first passage is receive path, and described second channel is sendaisle.
8. device as claimed in claim 7, is characterized in that, also comprise the first identifying unit, for:
When described first passage is sendaisle, when described second channel is receive path, send detection packet by described first passage to described request node; Spontaneous censorship is surveyed in the first preset duration after packet, when this locality obtains the feedback information of described detection packet, determines that described first passage is set up complete.
9. device as claimed in claim 8, is characterized in that, described first identifying unit, also for:
After described first passage is set up unsuccessfully, record described first passage and set up failed number of times, when the failed number of times of described foundation does not reach predetermined threshold value, re-establish the first passage between this locality and described request node; When the failed number of times of described foundation reaches predetermined threshold value, abandon the foundation of described first passage.
10. device as claimed in claim 7, is characterized in that, also comprise the second identifying unit, for:
When described first passage is sendaisle, when described second channel is receive path, in the second preset duration after described first passage is set up, when receiving the detection packet that described request node sends locally through described second channel, judge that described second channel is set up complete.
11. devices as claimed in claim 10, is characterized in that, described second identifying unit, also for:
After judging that described second channel is set up unsuccessfully, record described second channel and set up failed number of times, when the failed number of times of described foundation does not reach predetermined threshold value, re-establish the second channel between this locality and described request node; When the failed number of times of described foundation reaches predetermined threshold value, abandon the foundation of described second channel.
12. 1 kinds of data transmission devices, are applied in point-to-point stream media system, it is characterized in that, comprising:
First data transmission unit, for sending connection establishment request message to destination node, after making described target node accepts to described connection establishment request message, set up and local first passage, and described first passage set up complete after, and carry out transfer of data between described destination node;
Second data transmission unit, for the second channel between described and described destination node set up complete after, and carry out transfer of data between described destination node; Wherein, described first passage is sendaisle, and described second channel is receive path, or described first passage is receive path, and described second channel is sendaisle.
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| CN201310666536.2A CN104702582A (en) | 2013-12-10 | 2013-12-10 | Method and device for transmitting data |
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| CN201310666536.2A CN104702582A (en) | 2013-12-10 | 2013-12-10 | Method and device for transmitting data |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101494793A (en) * | 2009-03-03 | 2009-07-29 | 北京搜狗科技发展有限公司 | Method, device and system for sending and receiving stream media data |
| CN102148842A (en) * | 2010-02-08 | 2011-08-10 | 联想(北京)有限公司 | Audio processing method and equipment for remote desktop protocol |
| CN102752669A (en) * | 2011-04-19 | 2012-10-24 | 中国电信股份有限公司 | Transfer processing method and system for multi-channel real-time streaming media file and receiving device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101494793A (en) * | 2009-03-03 | 2009-07-29 | 北京搜狗科技发展有限公司 | Method, device and system for sending and receiving stream media data |
| CN102148842A (en) * | 2010-02-08 | 2011-08-10 | 联想(北京)有限公司 | Audio processing method and equipment for remote desktop protocol |
| CN102752669A (en) * | 2011-04-19 | 2012-10-24 | 中国电信股份有限公司 | Transfer processing method and system for multi-channel real-time streaming media file and receiving device |
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