CN105828046A - Data flow transmission method and device - Google Patents
Data flow transmission method and device Download PDFInfo
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- CN105828046A CN105828046A CN201610324074.XA CN201610324074A CN105828046A CN 105828046 A CN105828046 A CN 105828046A CN 201610324074 A CN201610324074 A CN 201610324074A CN 105828046 A CN105828046 A CN 105828046A
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- data stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/70—Media network packetisation
Abstract
The invention provides a data flow transmission method and a data flow transmission device. The method comprises the steps that when a video management server determines that an access device needs to copy a dataflow for a target client, the access device receives a copying redirection strategy from the video management server; and if the access device receives the data flow matched with the copying redirection strategy, the access device sends the data flow according to the target address of the data flow, copies the new data flow for the target client by using the copying redirection strategy, and sends the new data flow to the target client. According to the method and device provided by the invention, the work stress of the streaming media server can be relieved, the processing resources of the streaming media server and the network bandwidth can be saved, the copying and distribution of the data flow can be completed in time, and the data flow can be transmitted to the client in real time. Furthermore, under the premise of ensuring network security, the transmission path of the data flow can be more reasonable, and the transmission path can be simplified as much as possible.
Description
Technical field
The present invention relates to technical field of video monitoring, particularly relate to transmission method and the device of a kind of data stream.
Background technology
Streaming Media refers to transmit the most in a network the media format of data stream (such as voice data, video data and multimedia file etc.).Compared with the netcast form watched after downloading, being typically characterised by of Streaming Media: user can watch with download limit, limit, without waiting that whole file download is complete.Due to the superiority of stream media technology, this stream media technology is widely used in video request program, video conference, long-distance education, tele-medicine and online live broadcast system.Wherein, streaming media server is the nucleus equipment of Stream Media Application, is operator's Key Platform of providing a user with service.The major function of streaming media server is: gathers data stream, cache, dispatches and transmit broadcasting, as with streaming protocol (such as RTP (RealtimeTransportProtocol, RTP), RTSP (RealTimeStreamingProtocol, real time streaming transport protocol) etc.) by data stream transmitting to client, watch online for user.
Video monitoring system is the important component part of safety and protection system, and it is the integrated system that a kind of prevention ability is stronger.Video monitoring system is directly perceived with it, accurate, abundant with information content in time and is widely used in many occasions.Along with computer, network and image procossing, the developing rapidly of transmission technology, Video Supervision Technique there has also been significant progress.At present, in video monitoring system, the data stream collected for headend equipment (such as web camera, analog video camera, encoder etc.), multiple client may be had to need this data stream of program request.For this reason, it may be necessary to dispose streaming media server in video monitoring system, streaming media server replicate many numbers according to stream, and the data stream of duplication is sent respectively to multiple client.
As it is shown in figure 1, be the networking schematic diagram disposing streaming media server in video monitoring system, the transmitting procedure of data stream is: data stream, after collecting data stream, is sent to streaming media server by headend equipment.Streaming media server, after receiving data stream, replicates three numbers and is sent to client 1 according to stream, portion data stream, and another number is sent to client 2 according to stream, and another number is sent to client 3 according to stream.
Development along with video monitoring system, the headend equipment disposed in video monitoring system gets more and more, and the client of order program data stream also gets more and more, when the duplication distribution function of all data streams is processed by streaming media server, the operating pressure of streaming media server is the biggest, taking and process resource in a large number, and possibly cannot complete the duplication distribution of data stream in time, causing cannot be in real time to client transmissions data stream.And, streaming media server needs receive and send substantial amounts of data stream, and the consumption of the network bandwidth is excessive.
Summary of the invention
The present invention provides the transmission method of a kind of data stream, it is applied to include in the video monitoring system of video management server and access device, described video monitoring system also includes the source device that the purpose client being connected with described access device is connected with described access device, and described source device is the source device that the data stream of described purpose client request is corresponding, described method includes:
When described video management server determines that described access device needs for described purpose client duplicate data streams, the duplication that the most described access device receives from described video management server redirects strategy；
If described access device receives, coupling is described replicates the data stream redirecting strategy, the most described access device sends described data stream according to the destination address of described data stream, and utilize the described redirection strategy that replicates to replicate new data stream for described purpose client, and described new data stream is sent to described purpose client.
Also including streaming media server in described video monitoring system, described source device includes that headend equipment, described method farther include:
Described video management server determines that described access device needs the process for described purpose client duplicate data streams, specifically include: described video management server is knowing that described access device is connected with described headend equipment, and when being connected with described purpose client, if receiving the message for request data stream from described purpose client, it is determined that described access device needs for described purpose client duplicate data streams；
Described access device receives the described process replicating the data stream redirecting strategy of coupling, specifically include: described access device parses source IP address and purpose IP address from the data stream received, if the IP address that described source IP address is described headend equipment, and the IP address that described purpose IP address is described streaming media server, it is determined that described data stream matches redirects strategy to described duplication；
Described access device utilizes the described process replicating and redirecting strategy for described purpose client duplication new data stream, specifically include: described access device replicates described data stream, and the source IP address of the data stream after replicating is revised as the IP address of described streaming media server, and the purpose IP address of the data stream after described duplication is revised as the IP address of described purpose client.
Also including streaming media server in described video monitoring system, described source device includes the source client having been received by the data stream from described streaming media server, and described method farther includes:
Described video management server determines that described access device needs the process for described purpose client duplicate data streams, specifically include: described video management server is knowing that described access device is connected with described source client, and when being connected with described purpose client, if receiving the message for request data stream from described purpose client, it is determined that described access device needs for described purpose client duplicate data streams；
Described access device receives the described process replicating the data stream redirecting strategy of coupling, specifically include: described access device parses source IP address and purpose IP address from the data stream received, if the IP address that described source IP address is described streaming media server, and the IP address that described purpose IP address is described source client, it is determined that described data stream matches redirects strategy to described duplication；
Described access device utilizes the described process replicating and redirecting strategy for described purpose client duplication new data stream, specifically include: described access device replicates described data stream, and keep the IP address that source IP address is described streaming media server of data stream after replicating, and the purpose IP address of the data stream after described duplication is revised as the IP address of described purpose client.
Described method also includes: described access device is receiving from the purpose client being connected with this access device, during the first logon message of source client or headend equipment, described first logon message is sent to described video management server, and from described first logon message, parse described purpose client, source client or the facility information of described headend equipment, and send the second logon message to described video management server, described second logon message carries described facility information, the information of described access device, so that described video management server utilizes described second logon message to know, described access device is connected with described purpose client, and be connected with described headend equipment；Or, know that described access device is connected with described purpose client, and be connected with described source client.
Described method also includes: described video management server is receiving after the first logon message of described purpose client, described source client or described headend equipment, if not receiving the second logon message from described access device in Preset Time, then refuse described purpose client, described source client or described headend equipment and be linked into described video monitoring system.
The present invention provides the transmitting device of a kind of data stream, it is applied to include in the video monitoring system of video management server and access device, and the transmitting device of described data stream applies on described access device, described video monitoring system also includes the source device that the purpose client being connected with described access device is connected with described access device, and described source device is the source device that the data stream of described purpose client request is corresponding, the transmitting device of described data stream specifically includes:
Receiver module, for when described video management server determines that described access device needs for described purpose client duplicate data streams, then receives the duplication from described video management server and redirects strategy；
Processing module, for when receiving the data stream that the described duplication of coupling redirects strategy, then send described data stream according to the destination address of described data stream, and utilize the described redirection strategy that replicates to replicate new data stream for described purpose client, and described new data stream is sent to described purpose client.
Described video monitoring system also includes streaming media server, described source device includes headend equipment, described processing module, specifically for during receiving the described data stream replicating redirection strategy of coupling, source IP address and purpose IP address is parsed from the data stream received, if the IP address that described source IP address is headend equipment, described purpose IP address is the IP address of streaming media server, it is determined that described data stream matches redirects strategy to described duplication；It is during described purpose client replicates new data stream utilizing the described redirection strategy that replicates, replicate described data stream, the source IP address of the data stream after replicating is revised as the IP address of described streaming media server, and the purpose IP address of the data stream after described duplication is revised as the IP address of described purpose client；Or,
Described video monitoring system also includes streaming media server, described source device includes the source client having been received by the data stream from described streaming media server, described processing module, specifically for during receiving the described data stream replicating redirection strategy of coupling, source IP address and purpose IP address is parsed from the data stream received, if the IP address that described source IP address is described streaming media server, and the IP address that described purpose IP address is described source client, it is determined that described data stream matches redirects strategy to described duplication；It is during described purpose client replicates new data stream utilizing the described redirection strategy that replicates, replicate described data stream, and keep the IP address that source IP address is described streaming media server of data stream after replicating, and the purpose IP address of the data stream after described duplication is revised as the IP address of described purpose client.
Also include: Registering modules, for receiving from the purpose client being connected with described access device, during the first logon message of source client or headend equipment, described first logon message is sent to described video management server, and from described first logon message, parse described purpose client, source client or the facility information of described headend equipment, and send the second logon message to described video management server, described second logon message carries described facility information, the information of described access device, so that described video management server utilizes described second logon message to know, described access device is connected with described purpose client, and be connected with described headend equipment；Or, know that described access device is connected with described purpose client, and be connected with described source client.
The present invention provides the transmitting device of a kind of data stream, it is applied to include in the video monitoring system of video management server and access device, and the transmitting device of described data stream applies on described video management server, described video monitoring system also includes the source device that the purpose client being connected with described access device is connected with described access device, and described source device is the source device that the data stream of described purpose client request is corresponding, the transmitting device of described data stream specifically includes:
Determine module, be used for determining that described access device needs for described purpose client duplicate data streams；
Sending module, redirects strategy for sending to replicate to described access device；So that described access device is when receiving the data stream that the described duplication of coupling redirects strategy, then send described data stream according to the destination address of described data stream, and utilize the described redirection strategy that replicates to replicate new data stream for described purpose client, and described new data stream is sent to described purpose client.
Described video monitoring system also includes streaming media server, described source device includes headend equipment, described determine module, specifically for during determining that described access device needs for described purpose client duplicate data streams, knowing that described access device is connected with described headend equipment, and when being connected with described purpose client, if receiving the message for request data stream from described purpose client, it is determined that described access device needs for described purpose client duplicate data streams；Or,
Described video monitoring system also includes streaming media server, described source device includes the source client having been received by the data stream from described streaming media server, described determine module, specifically for during determining that described access device needs for described purpose client duplicate data streams, knowing that described access device is connected with described source client, and when being connected with described purpose client, if receiving the message for request data stream from described purpose client, then determine that described access device needs for described purpose client duplicate data streams.
Based on technique scheme, in the embodiment of the present invention, the duplication distribution of data stream can be realized by access device, and without streaming media server, all data streams are realized duplication and distribute, thus alleviate the operating pressure of streaming media server, save the process resource of streaming media server, save the network bandwidth, and can complete in time data stream duplication distribution, in real time to client transmissions data stream.And, on the premise of ensureing network security, the transmission path that can make data stream is more reasonable, simplifies transmission path as far as possible.
Accompanying drawing explanation
In order to the embodiment of the present invention or technical scheme of the prior art are clearly described, the accompanying drawing used required in the embodiment of the present invention or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments described in the present invention, for those of ordinary skill in the art, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the networking schematic diagram disposing streaming media server in video monitoring system；
Fig. 2 is the flow chart of the transmission method of the data stream in one embodiment of the present invention；
Fig. 3-Fig. 6 is the application scenarios schematic diagram in one embodiment of the present invention；
Fig. 7 is the hardware structure diagram of the access device in one embodiment of the present invention；
Fig. 8 is the structure chart of the transmitting device of the data stream in one embodiment of the present invention；
Fig. 9 is the hardware structure diagram of the video management server in one embodiment of the present invention；
Figure 10 is the structure chart of the transmitting device of the data stream in one embodiment of the present invention.
Detailed description of the invention
In terminology used in the present invention merely for the sake of describing the purpose of specific embodiment, and the unrestricted present invention." a kind of ", " described " and " being somebody's turn to do " of singulative used in the present invention and claims is also intended to include most form, unless context clearly shows that other implication.It is also understood that term "and/or" used herein refers to comprise any or all possible combination of one or more project of listing being associated.
Although should be appreciated that in the present invention possible employing term first, second, third, etc. to describe various information, but these information should not necessarily be limited by these terms.These terms are only used for same type of information is distinguished from each other out.Such as, without departing from the present invention, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.Depend on linguistic context, additionally, the word used " if " can be construed to " ... time " or " when ... " or " in response to determining ".
For problems of the prior art, the embodiment of the present invention proposes the transmission method of a kind of data stream (such as voice data, video data and multimedia file etc.), the method can apply to include that video management server, access device are (such as safe access gateway, it can be the access switch of two layers) in the video monitoring system of source device that is connected with this access device of the purpose client that is connected with this access device (such as decoding client, decoder etc., can be multiple).Wherein, this source device can be the source device corresponding to data stream of this purpose client request, this source device and this purpose client are positioned under same access device, and this source device is for the data stream of purpose client request, i.e. this source device has the data stream of purpose client request.As in figure 2 it is shown, the transmission method of this data stream may include that
Step 201, when video management server determines that access device needs for this purpose client duplicate data streams, then the duplication that access device receives from this video management server redirects strategy.
Step 202, if access device receives the data stream mating this duplication redirection strategy, then access device sends this data stream according to the destination address of this data stream, and utilize this duplication redirection strategy to replicate new data stream for this purpose client, and this new data stream is sent to this purpose client.
In one example, video monitoring system can also include streaming media server, and above-mentioned source device includes the headend equipment that is connected with access device.Under this application scenarios, headend equipment and purpose client are positioned under same access device, and the data stream of purpose client request, headend equipment collection be sent to the data stream of streaming media server just, this headend equipment has the data stream of purpose client request, therefore, this headend equipment is properly termed as the source device corresponding to data stream of this purpose client request.
Based on this, video management server determine access device need for the purpose of the process of client duplicate data streams, specifically can include but not limited to following manner: video management server is knowing that access device is connected with headend equipment, and when being connected with purpose client, if receiving the message for request data stream from described purpose client, it is determined that client duplicate data streams for the purpose of access device needs.
Further, access device receives coupling and replicates the process of the data stream redirecting strategy, specifically can include but not limited to: access device parses source IP address and purpose IP address from the data stream received, if the IP address that this source IP address is headend equipment, and the IP address that this purpose IP address is streaming media server, it is determined that this data stream matches to this duplication redirects strategy.
Further, for the purpose of access device utilization duplication redirection strategy, client replicates the process of new data stream, specifically can include but not limited to: access device replicates this data stream, and the source IP address of data stream after replicating is revised as the IP address of streaming media server, and the IP address of purpose client is revised as in the purpose IP address of the data stream after replicating.
In another example, video monitoring system can also include streaming media server, and above-mentioned source device includes the source client that is connected with access device, and described source client refers to have been received by the client of the data stream from streaming media server.Under this application scenarios, source client and purpose client are positioned under same access device, and the data stream of purpose client request, streaming media server is sent to the data stream of source client just, this source client has the data stream of purpose client request, therefore, this source client is properly termed as the source device corresponding to data stream of this purpose client request.
Based on this, video management server determine access device need for the purpose of the process of client duplicate data streams, specifically may include that video management server is knowing that access device is connected with this source client, and when being connected with this purpose client, if receiving the message for request data stream from this purpose client, it is determined that this access device needs for this purpose client duplicate data streams.
Further, access device receives coupling and replicates the process of the data stream redirecting strategy, specifically can include but not limited to: access device parses source IP address and purpose IP address from the data stream received, if the IP address that this source IP address is streaming media server, and the IP address that this purpose IP address is source client, it is determined that this data stream matches to this duplication redirects strategy.
Further, access device utilizes and replicates the process redirecting strategy for source client duplication new data stream, specifically can include but not limited to: access device duplicate data streams, and keep the IP address that source IP address is streaming media server of data stream after replicating, and the IP address of source client is revised as in the purpose IP address of the data stream after replicating.
In purpose client, in the registration process of source client or headend equipment, in the embodiment of the present invention, access device is receiving from the purpose client being connected with this access device, during the first logon message of source client or headend equipment, on the basis of the first logon message is sent to video management server, purpose client can also be parsed from the first logon message, source client or the facility information of headend equipment, and send the second logon message to video management server, this second logon message carries this facility information, and the information of this access device, so that video management server utilizes this second logon message to know, described access device is connected with described purpose client, and be connected with described headend equipment；Or, know that described access device is connected with described purpose client, and be connected with described source client.
Further, video management server is receiving after the first logon message of purpose client, source client or headend equipment, if not receiving the second logon message from this access device in Preset Time, then refusal purpose client, source client or headend equipment are linked into video monitoring system, to ensure the safety of system.
Based on technique scheme, in the embodiment of the present invention, the duplication distribution of data stream can be realized by access device, and without streaming media server, all data streams are realized duplication and distribute, thus alleviate the operating pressure of streaming media server, save the process resource of streaming media server, save the network bandwidth, and can complete in time data stream duplication distribution, in real time to client transmissions data stream.And, on the premise of ensureing network security, the transmission path that can make data stream is more reasonable, simplifies transmission path as far as possible.
Below in conjunction with concrete application scenarios, the technique scheme of the embodiment of the present invention is illustrated.
Application scenarios 1: as shown in Figure 3, video monitoring system can include access device 1, the headend equipment (i.e. source device) being connected with this access device 1 and client 1 (i.e. purpose client), video management server, streaming media server.
As it is shown on figure 3, in the registration process of headend equipment, headend equipment sends the first logon message to access device 1, access device 1 this first logon message is sent to video management server.Video management server, after receiving this first logon message, completes the registration process of headend equipment, and the handling process of this registration process does not repeats them here, so that headend equipment can be linked in video monitoring system.
Access device 1 is when receiving the first logon message from the headend equipment being connected with this access device, on the basis of the first logon message is sent to video management server, this the first logon message can also be carried out detection to intercept, the facility information of headend equipment is parsed, such as information such as the device identification of headend equipment, IP address of equipment, device types from this first logon message.Afterwards, access device 1 sends the second logon message to video management server, this second logon message carries facility information and the information of this access device 1 of this headend equipment, as mark, IP address, device type and the headend equipment of access device 1 are connected to the interface message (as headend equipment is connected to interface 1) of access device 1.
Video management server is after receiving the second logon message, know that headend equipment (parsing from the facility information of the headend equipment of the second logon message) is connected with access device 1 (parsing from the information of the access device 1 of the second logon message), and be connected to the interface 1 time of access device 1.
As it is shown on figure 3, in the registration process of client 1, client 1 sends the first logon message to access device 1, access device 1 this first logon message is sent to video management server.Video management server, after receiving this first logon message, completes the registration process of client 1, and the handling process of this registration process does not repeats them here, so that client 1 can be linked in video monitoring system.
Access device 1 is when receiving from the first logon message of the client 1 being connected with this access device, on the basis of the first logon message is sent to video management server, this the first logon message can also be carried out detection to intercept, the facility information of client 1 is parsed, such as information such as the device identification of client 1, IP address of equipment, device types from this first logon message.Afterwards, access device 1 sends the second logon message to video management server, this second logon message carries facility information and the information of this access device 1 of this client 1, as mark, IP address, device type and the client 1 of access device 1 are connected to the interface message (as client 1 is connected to interface 2) of access device 1.
Video management server is after receiving the second logon message, know that client 1 (parsing from the facility information of the client 1 of the second logon message) is connected with access device 1 (parsing from the information of the access device 1 of the second logon message), and be connected to the interface 2 times of access device 1.
nullIn the embodiment of the present invention，Video management server is receiving after the first logon message of client 1 or headend equipment，If not receiving the second logon message from this access device 1 in Preset Time (such as 3 minutes)，Then video management server thinks that client 1 or headend equipment are not attached on legal access device that (legal access device is in the registration process of client 1 or headend equipment，Second logon message of this access device can be sent，So that video management server completes the registration process of this access device)，And refuse client 1 or headend equipment is linked into video monitoring system and (is linked into video monitoring system owing to having allowed for client 1 or headend equipment before，Therefore client 1 or headend equipment is made to roll off the production line at subsequent process)，To ensure the safety of whole video monitoring system.
Based on said process, video management server can know that headend equipment is connected to the interface 1 time of access device 1, and knows that client 1 is connected to the interface 2 times of access device 1.Therefore, video management server knows that access device 1 is connected with headend equipment, and be connected with client 1, if receiving the message for request data stream (the data stream that i.e. headend equipment sends) from client 1, it is determined that access device needs for client 1 duplicate data streams.Afterwards, video management server sends to replicate to access device 1 and redirects strategy, this duplication redirects strategy and replicates for the data stream making access device 1 that headend equipment to be sent to streaming media server, obtains new data stream, and new data stream is sent to client 1.
Based on this, in the embodiment of the present invention, access device 1 is receiving after the duplication redirection strategy of video management server, if receiving the data stream mating this duplication redirection strategy, then access device 1 sends this data stream according to the destination address of this data stream, and utilize this duplication redirection strategy to replicate new data stream for this client 1, and this new data stream is sent to this client 1.
In one example, the match options replicating redirection strategy can be: source IP address is the IP address of headend equipment, and purpose IP address is the IP address of streaming media server.Action option can be: source IP address is revised as the IP address of streaming media server, and purpose IP address is revised as the IP address of client 1, sends new data stream by interface 2 (interface that client 1 connects on access device 1).
The data stream collected for headend equipment, when client 1 is after video management server sends the message of this data stream of request, then this data stream transmission path between headend equipment and client 1 is:
As shown in Figure 4, for the data stream of the prior art transmission path between headend equipment and client 1.Data stream is sent to streaming media server by video management server notice headend equipment, and data stream is sent to client 1 by notification streams media server.Based on this, data stream, after collecting data stream, is sent to streaming media server by headend equipment, and the source IP address of this data stream is the IP address of headend equipment, and purpose IP address is the IP address of streaming media server.Streaming media server is after receiving data stream, at this data stream locally stored, and replicate a data stream, and the data stream of duplication is sent to client 1, the source IP address of this data stream is the IP address of streaming media server, and purpose IP address is the IP address of client 1.Figure 4, it is seen that data stream can first be sent on streaming media server, data stream is sent in client 1 by streaming media server again, and there is repetition in the transmission path of data stream.
As it is shown in figure 5, be the transmission path between headend equipment and client 1 of the data stream in the embodiment of the present invention.Data stream is sent to streaming media server by video management server notice headend equipment, but is not longer notified about streaming media server and data stream is sent to client 1.Based on this, data stream, after collecting data stream, is sent to streaming media server by headend equipment, and the source IP address of this data stream is the IP address of headend equipment, and purpose IP address is the IP address of streaming media server.This stream compression, after receiving this data stream, is issued streaming media server by access device 1, and streaming media server, after receiving this data stream, at this data stream locally stored, but no longer sends this data stream to client 1.
On the basis of this stream compression is issued streaming media server by access device 1, access device 1 can also parse source IP address and purpose IP address from data stream, the IP address that source IP address is headend equipment due to this data stream, purpose IP address is the IP address of streaming media server, and therefore this data stream can match above-mentioned duplication and redirect strategy.Based on this, access device 1 replicates this data stream, and the source IP address of the data stream after replicating is revised as the IP address of streaming media server, and the IP address of client 1 is revised as in the purpose IP address of the data stream after replicating.New data stream is sent to client 1 by access device 1 afterwards, and the source IP address of this new data stream is the IP address of streaming media server, and purpose IP address is the IP address of client 1.
From figure 5 it can be seen that data stream is no longer sent in client 1 by streaming media server, and being directly sent in client 1 by data stream by access device 1, the transmission path of data stream is not repeated.
In one example, the MAC Address of client 1 can also be revised as in purpose MAC (MediaAccessControl, the medium access control) address of the data stream after replicating by access device 1.
In one example, video management server can also notify client 1, the source IP address of its data stream accepted is the IP address of streaming media server, so that client 1 accepts and processes the data stream that source IP address is the IP address of streaming media server, the processing procedure of client 1 repeats the most in detail.
In one example, for the application scenarios shown in Fig. 3, assume currently only have client 1 to ask the data stream of headend equipment, and do not have the data stream of other client request headend equipment, then data stream is transmitted directly to client 1 by video management server notice headend equipment.Based on this, data stream, after collecting data stream, is sent to client 1 by headend equipment, and the source IP address of this data stream is the IP address of headend equipment, and purpose IP address is the IP address of client 1.Access device 1 after receiving this data stream, purpose IP address based on this data stream, directly data stream can be sent to client 1.
Application scenarios 2: as shown in Figure 6, on the basis of the application scenarios 1 shown in Fig. 3, can also include access device 2, the client 2 being connected with access device 2 and client 3 in video monitoring system.Assuming the first request data stream of client 2, request data stream after client 3, then streaming media server sends data stream to client 2, and now client 2 is source client, client for the purpose of client 3.Assuming the first request data stream of client 3, request data stream after client 2, then streaming media server sends data stream to client 3, and now client 3 is source client, client for the purpose of client 2.
The process of the data stream of headend equipment is asked for client 1, identical with application scenarios 1, do not repeat them here, client 2/ client 3 is asked that the process of the data stream of headend equipment illustrate below.
As shown in Figure 6, in the registration process of client 2 or client 3, this client 2 or client 3 can send the first logon message to access device 2, afterwards, access device 2 this first logon message are sent to video management server.Video management server, after receiving this first logon message, completes client 2 or the registration process of client 3, and the handling process of this registration process does not repeats them here, so that client 2 or client 3 can be linked in video monitoring system.
Access device 2 is when receiving the first logon message from the client 2 being connected with this access device 2 or client 3, on the basis of the first logon message is sent to video management server, first logon message can also be carried out detection to intercept, client 2 or the facility information of client 3 is parsed, such as information such as client 2 or the device identification of client 3, IP address of equipment, device types from the first logon message.Access device 2 sends the second logon message to video management server, this second logon message carries client 2 or the facility information of client 3 and the information of this access device 2, as mark, IP address, device type and the client 2 of access device 2 or client 3 are connected to the interface message (as client 2 is connected to interface 1, client 3 is connected to interface 2) of access device 2.
Video management server is after receiving the second logon message, know that client 2 or client 3 (parsing from the client 2 of the second logon message or the facility information of client 3) are connected with access device 2 (parsing from the information of the access device 2 of the second logon message), and client 2 is connected to the interface 1 time of access device 2, client 3 is connected to the interface 2 times of access device 2.
nullIn the embodiment of the present invention，Video management server is receiving after the first logon message of client 2 or client 3，If not receiving the second logon message from this access device 2 in Preset Time (such as 3 minutes)，Then video management server thinks that client 2 or client 3 are not attached on legal access device that (legal access device is in the registration process of client 2 or client 3，Second logon message of this access device can be sent，So that video management server completes the registration process of this access device)，And refuse client 2 or client 3 is linked into video monitoring system and (is linked into video monitoring system owing to having allowed for client 2 or client 3 before，Therefore client 2 or client 3 is made to roll off the production line at subsequent process)，To ensure the safety of whole video monitoring system.
Based on said process, video management server can know that client 2 is connected to the interface 1 time of access device 2, and knows that client 3 is connected to the interface 2 times of access device 2.Therefore, video management server can know that access device 2 is connected with at least two client (i.e. client 2 and client 3), it is assumed that the first request data stream of client 2, request data stream after client 3, then client 2 is source client, client for the purpose of client 3.Afterwards, if receiving the message for request data stream from purpose client, then video management server sends to replicate to access device 2 and redirects strategy, this duplication redirects strategy and replicates for the data stream making this access device 2 convection media server be sent to purpose client, obtain a new data stream, and this new data stream is sent to source client.
Based on foregoing description, in the embodiment of the present invention, access device 2 is receiving after the duplication redirection strategy of video management server, if receiving the data stream mating this duplication redirection strategy, then access device 2 sends this data stream according to the destination address of this data stream and (will be sent to source client by this data stream, such as client 2), and utilize this duplication redirection strategy to replicate new data stream for this purpose client (such as client 3), and this new data stream is sent to this purpose client.
In one example, the match options replicating redirection strategy can be: source IP address is the IP address of streaming media server, and purpose IP address is the IP address of source client (such as client 2).Action option can be: keeps source IP address constant, the IP address i.e. keeping source IP address to be streaming media server, purpose IP address is revised as the IP address of purpose client (such as client 3), and sends new data stream by interface 2 (interface that i.e. client 3 connects on access device 2).
The data stream collected for headend equipment, after data stream is sent to streaming media server by headend equipment, when client 2/ client 3 is after video management server sends the message of this data stream of request, then this data stream transmission path between streaming media server and client 2/ client 3 is:
In the prior art, data stream can be sent respectively to client 2 and client 3 with notification streams media server by video management server.Based on this, streaming media server can replicate two numbers and be sent to client 2 according to stream, a copy of it data stream, and the source IP address of this data stream is the IP address of streaming media server, and purpose IP address is the IP address of client 2；And another number is sent to client 3 according to stream, the source IP address of this data stream is the IP address of streaming media server, and purpose IP address is the IP address of client 3.It can thus be seen that streaming media server needs to send two numbers according to stream.
In embodiments of the present invention, data stream can be sent to client 2 (source client) with notification streams media server by video management server, but is not longer notified about streaming media server and data stream is sent to client 3.Based on this, streaming media server only replicates a data stream, and this data stream is sent to client 2, and the source IP address of this data stream is the IP address of streaming media server, and purpose IP address is the IP address of client 2.This stream compression, after receiving this data stream, is issued client 2 by access device 2.
On the basis of this stream compression is issued client 2 by access device 2, access device 2 can also parse source IP address and purpose IP address from data stream, the IP address that source IP address is streaming media server due to this data stream, purpose IP address is the IP address of client 2 (i.e. source client), and therefore this data stream can match above-mentioned duplication and redirect strategy.Based on this, access device 2 replicates this data stream, and keep the IP address that source IP address is streaming media server (source IP address i.e. keeping data stream is constant) of the data stream after replicating, and the IP address of client 3 (i.e. purpose client) is revised as in the purpose IP address of data stream after replicating.Afterwards, new data stream is sent to client 3 by access device 2, and the source IP address of this new data stream is the IP address of streaming media server, and purpose IP address is the IP address of client 3.
It can thus be seen that streaming media server only sends a data stream, reduce the transmission of data stream.
In one example, the target MAC (Media Access Control) address of the data stream after replicating can also be revised as the MAC Address of client 3 by access device 2.In addition, in one example, video management server can also notify client 2 or client 3, the source IP address of its data stream accepted is the IP address of streaming media server, so that client 2 or client 3 accept and process the data stream that source IP address is the IP address of streaming media server, the processing procedure of client 2 or client 3 repeats the most in detail.
Be can be seen that by application scenarios 1 and application scenarios 2, in the embodiment of the present invention, the duplication distribution of data stream can be realized by access device, and without streaming media server, all data streams are realized duplication and distribute, thus alleviate the operating pressure of streaming media server, save the process resource of streaming media server, save the network bandwidth, and can complete in time data stream duplication distribution, in real time to client transmissions data stream.And, on the premise of ensureing network security, the transmission path that can make data stream is more reasonable, simplifies transmission path as far as possible.And, the process performance of whole video monitoring system is more efficient, and it is more convenient to dispose.And, headend equipment can also be authenticated by access device, thus on the basis of authentication function, it is achieved media stream duplication function.Based on this authentication function, when headend equipment and client are all connected with this access device, access device is in default situations, forbid the exchanging visit of headend equipment and client, only headend equipment and client all just can be exchanged visits by certification, headend equipment and client, it is ensured that safety.
Based on the inventive concept as said method, the embodiment of the present invention additionally provides the transmitting device of a kind of data stream, it is applied to include in the video monitoring system of video management server and access device, described video monitoring system also includes the source device that the purpose client being connected with described access device is connected with described access device, and source device is the source device corresponding to data stream of purpose client request, and the transmitting device of described data stream is applied on described access device.Wherein, the transmitting device of this data stream can be realized by software, it is also possible to realizes by the way of hardware or software and hardware combining.As a example by implemented in software, as the device on a logical meaning, being the processor of access device by its place, computer program instructions corresponding in reading non-volatile storage is formed.For hardware view, as shown in Figure 7, a kind of hardware structure diagram of access device at the transmitting device place of the data stream proposed for the present invention, in addition to the processor shown in Fig. 7, nonvolatile memory, access device can also include other hardware, such as the forwarding chip of responsible process message, network interface, internal memory etc.；From the point of view of from hardware configuration, this access device, it is also possible that distributed apparatus, potentially includes multiple interface card, in order to carry out the extension of Message processing at hardware view.
As shown in Figure 8, for the structure chart of transmitting device of the data stream that the embodiment of the present invention proposes, the transmitting device of described data stream specifically includes:
Receiver module 11, for when described video management server determines that described access device needs for described purpose client duplicate data streams, then receives the duplication from described video management server and redirects strategy；
Processing module 12, for when receiving the data stream that the described duplication of coupling redirects strategy, then send described data stream according to the destination address of described data stream, and utilize the described redirection strategy that replicates to replicate new data stream for described purpose client, and described new data stream is sent to described purpose client.
Described video monitoring system also includes streaming media server, described source device includes headend equipment, described processing module 12, specifically for during receiving the described data stream replicating redirection strategy of coupling, source IP address and purpose IP address is parsed from the data stream received, if the IP address that described source IP address is headend equipment, described purpose IP address is the IP address of streaming media server, it is determined that described data stream matches redirects strategy to described duplication；It is during described purpose client replicates new data stream utilizing the described redirection strategy that replicates, replicate described data stream, the source IP address of the data stream after replicating is revised as the IP address of described streaming media server, and the purpose IP address of the data stream after described duplication is revised as the IP address of described purpose client；Or,
Described video monitoring system also includes streaming media server, described source device includes the source client having been received by the data stream from described streaming media server, described processing module 12, specifically for during receiving the described data stream replicating redirection strategy of coupling, source IP address and purpose IP address is parsed from the data stream received, if the IP address that described source IP address is described streaming media server, and the IP address that described purpose IP address is described source client, then determine that described data stream matches redirects strategy to described duplication；It is during described purpose client replicates new data stream utilizing the described redirection strategy that replicates, replicate described data stream, and keep the IP address that source IP address is described streaming media server of data stream after replicating, and the purpose IP address of the data stream after described duplication is revised as the IP address of described purpose client.
The transmitting device of described data stream also includes (not embodying in the drawings):
Registering modules, for receiving from the purpose client being connected with described access device, during the first logon message of source client or headend equipment, described first logon message is sent to described video management server, and from described first logon message, parse described purpose client, source client or the facility information of described headend equipment, and send the second logon message to described video management server, described second logon message carries described facility information, the information of described access device, so that described video management server utilizes described second logon message to know, described access device is connected with described purpose client, and be connected with described headend equipment；Or, know that described access device is connected with described purpose client, and be connected with described source client.
Wherein, the modules of apparatus of the present invention can be integrated in one, it is also possible to separates and disposes.Above-mentioned module can merge into a module, it is also possible to is further split into multiple submodule.
Based on the inventive concept as said method, the embodiment of the present invention additionally provides the transmitting device of a kind of data stream, it is applied to include in the video monitoring system of video management server and access device, described video monitoring system also includes the source device that the purpose client being connected with described access device is connected with described access device, and described source device is the source device that the data stream of described purpose client request is corresponding, the transmitting device of described data stream is applied on video management server.The transmitting device of this data stream can be realized by software, it is also possible to realizes by the way of hardware or software and hardware combining.As a example by implemented in software, as the device on a logical meaning, being the processor of video management server by its place, computer program instructions corresponding in reading non-volatile storage is formed.For hardware view, as shown in Figure 9, a kind of hardware structure diagram of video management server at the transmitting device place of the data stream proposed for the present invention, in addition to the processor shown in Fig. 9, nonvolatile memory, video management server can also include other hardware, such as the forwarding chip of responsible process message, network interface, internal memory etc.；From the point of view of from hardware configuration, this video management server, it is also possible that distributed apparatus, potentially includes multiple interface card, in order to carry out the extension of Message processing at hardware view.
As shown in Figure 10, for the structure chart of transmitting device of the data stream that the embodiment of the present invention proposes, the transmitting device of described data stream specifically includes:
Determine module 21, be used for determining that described access device needs for described purpose client duplicate data streams；
Sending module 22, redirects strategy for sending to replicate to described access device；So that described access device is when receiving the data stream that the described duplication of coupling redirects strategy, then send described data stream according to the destination address of described data stream, and utilize the described redirection strategy that replicates to replicate new data stream for described purpose client, and described new data stream is sent to described purpose client.
Described video monitoring system also includes streaming media server, described source device includes headend equipment, described determine module 21, specifically for during determining that described access device needs for described purpose client duplicate data streams, knowing that described access device is connected with described headend equipment, and when being connected with described purpose client, if receiving the message for request data stream from described purpose client, it is determined that described access device needs for described purpose client duplicate data streams；Or,
Described video monitoring system also includes streaming media server, described source device includes the source client having been received by the data stream from described streaming media server, described determine module 21, specifically for during determining that described access device needs for described purpose client duplicate data streams, knowing that described access device is connected with described source client, and when being connected with described purpose client, if receiving the message for request data stream from described purpose client, then determine that described access device needs for described purpose client duplicate data streams.
Wherein, the modules of apparatus of the present invention can be integrated in one, it is also possible to separates and disposes.Above-mentioned module can merge into a module, it is also possible to is further split into multiple submodule.
Through the above description of the embodiments, those skilled in the art is it can be understood that can add the mode of required general hardware platform by software to the present invention and realize, naturally it is also possible to by hardware, but a lot of in the case of the former is more preferably embodiment.Based on such understanding, the part that prior art is contributed by technical scheme the most in other words can embody with the form of software product, this computer software product is stored in a storage medium, including some instructions with so that a computer equipment (can be personal computer, server, or the network equipment etc.) perform the method described in each embodiment of the present invention.It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module or flow process in accompanying drawing are not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in the device in embodiment can describe according to embodiment to carry out being distributed in the device of embodiment, it is also possible to carry out respective change and be disposed other than in one or more devices of the present embodiment.The module of above-described embodiment can merge into a module, it is possible to is further split into multiple submodule.The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The several specific embodiments being only the present invention disclosed above, but, the present invention is not limited to this, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (10)
1. the transmission method of a data stream, it is applied to include in the video monitoring system of video management server and access device, it is characterized in that, described video monitoring system also includes the source device that the purpose client being connected with described access device is connected with described access device, and described source device is the source device that the data stream of described purpose client request is corresponding, described method includes:
When described video management server determines that described access device needs for described purpose client duplicate data streams, the duplication that the most described access device receives from described video management server redirects strategy；
If described access device receives, coupling is described replicates the data stream redirecting strategy, the most described access device sends described data stream according to the destination address of described data stream, and utilize the described redirection strategy that replicates to replicate new data stream for described purpose client, and described new data stream is sent to described purpose client.
Method the most according to claim 1, it is characterised in that also include streaming media server in described video monitoring system, described source device includes that headend equipment, described method farther include:
Described video management server determines that described access device needs the process for described purpose client duplicate data streams, specifically include: described video management server is knowing that described access device is connected with described headend equipment, and when being connected with described purpose client, if receiving the message for request data stream from described purpose client, it is determined that described access device needs for described purpose client duplicate data streams；
Described access device receives the described process replicating the data stream redirecting strategy of coupling, specifically include: described access device parses source IP address and purpose IP address from the data stream received, if the IP address that described source IP address is described headend equipment, and the IP address that described purpose IP address is described streaming media server, it is determined that described data stream matches redirects strategy to described duplication；
Described access device utilizes the described process replicating and redirecting strategy for described purpose client duplication new data stream, specifically include: described access device replicates described data stream, and the source IP address of the data stream after replicating is revised as the IP address of described streaming media server, and the purpose IP address of the data stream after described duplication is revised as the IP address of described purpose client.
Method the most according to claim 1, it is characterized in that, also including streaming media server in described video monitoring system, described source device includes the source client having been received by the data stream from described streaming media server, and described method farther includes:
Described video management server determines that described access device needs the process for described purpose client duplicate data streams, specifically include: described video management server is knowing that described access device is connected with described source client, and when being connected with described purpose client, if receiving the message for request data stream from described purpose client, it is determined that described access device needs for described purpose client duplicate data streams；
Described access device receives the described process replicating the data stream redirecting strategy of coupling, specifically include: described access device parses source IP address and purpose IP address from the data stream received, if the IP address that described source IP address is described streaming media server, and the IP address that described purpose IP address is described source client, it is determined that described data stream matches redirects strategy to described duplication；
Described access device utilizes the described process replicating and redirecting strategy for described purpose client duplication new data stream, specifically include: described access device replicates described data stream, and keep the IP address that source IP address is described streaming media server of data stream after replicating, and the purpose IP address of the data stream after described duplication is revised as the IP address of described purpose client.
The most according to the method in claim 2 or 3, it is characterised in that described method also includes:
Described access device is receiving from the purpose client being connected with this access device, during the first logon message of source client or headend equipment, described first logon message is sent to described video management server, and from described first logon message, parse described purpose client, source client or the facility information of described headend equipment, and send the second logon message to described video management server, described second logon message carries described facility information, the information of described access device, so that described video management server utilizes described second logon message to know, described access device is connected with described purpose client, and be connected with described headend equipment；Or, know that described access device is connected with described purpose client, and be connected with described source client.
Method the most according to claim 4, it is characterised in that described method also includes:
Described video management server is receiving after the first logon message of described purpose client, described source client or described headend equipment, if not receiving the second logon message from described access device in Preset Time, then refuse described purpose client, described source client or described headend equipment and be linked into described video monitoring system.
6. the transmitting device of a data stream, it is applied to include in the video monitoring system of video management server and access device, and the transmitting device of described data stream applies on described access device, it is characterized in that, described video monitoring system also includes the source device that the purpose client being connected with described access device is connected with described access device, and described source device is the source device that the data stream of described purpose client request is corresponding, the transmitting device of described data stream specifically includes:
Receiver module, for when described video management server determines that described access device needs for described purpose client duplicate data streams, then receives the duplication from described video management server and redirects strategy；
Processing module, for when receiving the data stream that the described duplication of coupling redirects strategy, then send described data stream according to the destination address of described data stream, and utilize the described redirection strategy that replicates to replicate new data stream for described purpose client, and described new data stream is sent to described purpose client.
Device the most according to claim 6, it is characterised in that
Described video monitoring system also includes streaming media server, described source device includes headend equipment, described processing module, specifically for during receiving the described data stream replicating redirection strategy of coupling, source IP address and purpose IP address is parsed from the data stream received, if the IP address that described source IP address is headend equipment, described purpose IP address is the IP address of streaming media server, it is determined that described data stream matches redirects strategy to described duplication；It is during described purpose client replicates new data stream utilizing the described redirection strategy that replicates, replicate described data stream, the source IP address of the data stream after replicating is revised as the IP address of described streaming media server, and the purpose IP address of the data stream after described duplication is revised as the IP address of described purpose client；Or,
Described video monitoring system also includes streaming media server, described source device includes the source client having been received by the data stream from described streaming media server, described processing module, specifically for during receiving the described data stream replicating redirection strategy of coupling, source IP address and purpose IP address is parsed from the data stream received, if the IP address that described source IP address is described streaming media server, and the IP address that described purpose IP address is described source client, it is determined that described data stream matches redirects strategy to described duplication；It is during described purpose client replicates new data stream utilizing the described redirection strategy that replicates, replicate described data stream, and keep the IP address that source IP address is described streaming media server of data stream after replicating, and the purpose IP address of the data stream after described duplication is revised as the IP address of described purpose client.
Device the most according to claim 7, it is characterised in that also include:
Registering modules, for receiving from the purpose client being connected with described access device, during the first logon message of source client or headend equipment, described first logon message is sent to described video management server, and from described first logon message, parse described purpose client, source client or the facility information of described headend equipment, and send the second logon message to described video management server, described second logon message carries described facility information, the information of described access device, so that described video management server utilizes described second logon message to know, described access device is connected with described purpose client, and be connected with described headend equipment；Or, know that described access device is connected with described purpose client, and be connected with described source client.
9. the transmitting device of a data stream, it is applied to include in the video monitoring system of video management server and access device, and the transmitting device of described data stream applies on described video management server, it is characterized in that, described video monitoring system also includes the source device that the purpose client being connected with described access device is connected with described access device, and described source device is the source device that the data stream of described purpose client request is corresponding, the transmitting device of described data stream specifically includes:
Determine module, be used for determining that described access device needs for described purpose client duplicate data streams；
Sending module, redirects strategy for sending to replicate to described access device；So that described access device is when receiving the data stream that the described duplication of coupling redirects strategy, then send described data stream according to the destination address of described data stream, and utilize the described redirection strategy that replicates to replicate new data stream for described purpose client, and described new data stream is sent to described purpose client.
Device the most according to claim 9, it is characterised in that
Described video monitoring system also includes streaming media server, described source device includes headend equipment, described determine module, specifically for during determining that described access device needs for described purpose client duplicate data streams, knowing that described access device is connected with described headend equipment, and when being connected with described purpose client, if receiving the message for request data stream from described purpose client, it is determined that described access device needs for described purpose client duplicate data streams；Or,
Described video monitoring system also includes streaming media server, described source device includes the source client having been received by the data stream from described streaming media server, described determine module, specifically for during determining that described access device needs for described purpose client duplicate data streams, knowing that described access device is connected with described source client, and when being connected with described purpose client, if receiving the message for request data stream from described purpose client, then determine that described access device needs for described purpose client duplicate data streams.
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| US11363060B2 (en) * | 2019-10-24 | 2022-06-14 | Microsoft Technology Licensing, Llc | Email security in a multi-tenant email service |
| CN113873265A (en) * | 2021-10-27 | 2021-12-31 | 猫岐智能科技（上海）有限公司 | Video viewing method and viewing system |
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