CN106792261A - Method and device, method for routing and device for Streaming Media forwarding - Google Patents
Method and device, method for routing and device for Streaming Media forwarding Download PDFInfo
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- CN106792261A CN106792261A CN201611036048.3A CN201611036048A CN106792261A CN 106792261 A CN106792261 A CN 106792261A CN 201611036048 A CN201611036048 A CN 201611036048A CN 106792261 A CN106792261 A CN 106792261A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/64—Addressing
- H04N21/6402—Address allocation for clients
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/63—Routing a service request depending on the request content or context
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/64322—IP
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64784—Data processing by the network
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
A kind of method and device, method for routing and device forwarded for Streaming Media of disclosure.A kind of method for Streaming Media forwarding, for multilayer stream media network, the multilayer stream media network includes many streaming media servers, routing table is configured with the streaming media server, the routing table includes the next hop information of the streaming media server, wherein described next hop information includes multiple alternative next hop address, and the method is comprised the following steps：Receive the packet that a upper node sends；Send route requests；The destination address returned in response to the route requests is received, wherein the destination address is one of the multiple alternative next hop address；And the packet is forwarded to by corresponding next node according to the destination address.Disclosed method and device can realize the route of the flow media data packet in the multilayer stream media network of high scalability and high flexibility.
Description
Technical field
The disclosure relates in general to stream medium data transmission technique field in ethernet networks, is used in particular to one kind
Method and device, method for routing and device in Streaming Media forwarding.
Background technology
With online education in recent years and the extensive rise of live broadcast service, multimedia Online Video technology more and more should
Used in Internet market field.The growth of flow and the expansion of business, consequently also bring more technological challenges, high reliability,
High real-time, high scalability also increasingly become the technical bottleneck in Online Video direction.
In existing streaming media server topological structure, often the deployment scheme of most streaming media server is single
The streaming media server topology of point deployment or double-layer structure, even multilayer, is also all to configure static in the media server
Route service.
Such as, it is same streaming media server that single-point is deployed as plug-flow (publish) and draws stream (play), and double-layer structure is then
Often based on stream pushing server, it is from the stream information of synchronous master server from server to master server to draw streaming server.Two
, often be deployed on the up streaming media server of link for static routing, so instantly by complex hierarchy structure more than layer
During row many streaming media servers of deployment, many downstream video servers can be to all Media Streams of up streaming media server
Copied.
Above-mentioned topological project is often only applicable to the business scenario of simple structure, and limitation plug-flow service and drawing mostly
Both geographical position of stream service will not relate to transoceanic.
For example, plug-flow service is in North America, stream service is drawn in China.If streaming media server is deployed as two-layer or single-point knot
Structure, then cannot meet online Streaming Media low time delay, high-stability requirement.If topological form is set into static topological,
Whole routing link autgmentability is poor, and deployment upgrade cost is higher.
Accordingly, it would be desirable to a kind of new method and device for Streaming Media forwarding, method for routing and device.
Above- mentioned information is only used for strengthening the understanding of background of this disclosure, therefore it disclosed in the background section
Can include not constituting the information to prior art known to persons of ordinary skill in the art.
The content of the invention
The disclosure provides a kind of method and device, method for routing and device forwarded for Streaming Media, it is possible to increase multilayer
The autgmentability of the streaming media server route in stream media network and flexibility.
Other characteristics and advantage of the disclosure will be apparent from by following detailed description, or partially by the disclosure
Practice and acquistion.
According to an aspect of this disclosure, there is provided a kind of method for Streaming Media forwarding, for multilayer stream media network,
The multilayer stream media network includes many streaming media servers, and routing table, the road are configured with the streaming media server
Include the next hop information of the streaming media server by table, wherein the next hop information includes multiple alternative next-hop ground
Location, the method is comprised the following steps：Receive the packet that a upper node sends；Send route requests；Receive in response to the road
The destination address returned by request, wherein the destination address is one of the multiple alternative next hop address；And
The packet is forwarded to by corresponding next node according to the destination address.
In a kind of exemplary embodiment of the disclosure, the routing table also upper hop including the streaming media server
Information, the packet includes preset field, and the transmission route requests include：According to the preset field and the routing table
Determine the routing direction of the packet；The route requests are sent according to the routing direction.
According to an aspect of this disclosure, there is provided a kind of method for routing, including：The routing table of streaming media server is configured,
The routing table includes the next hop information of the streaming media server, wherein the next hop information includes that multiple is alternative next
Jump address；The corresponding multiple nodes of the multiple alternative next hop address to the streaming media server are tested respectively,
Obtain test result；The next-hop optimum location of the streaming media server is determined according to the test result, wherein under described
One jump optimum location is one of the multiple alternative next hop address.
In a kind of exemplary embodiment of the disclosure, also include：Receive route requests；According to the route requests by institute
State next-hop optimum location to be sent to the streaming media server as destination address, wherein the streaming media server is according to institute
State the packet that destination address will receive and be forwarded to corresponding next node.
In a kind of exemplary embodiment of the disclosure, the node includes fringe node and forward node.
In a kind of exemplary embodiment of the disclosure, the forward node includes aggregation node and core node, wherein
Communicated by private line network between the core node.
In a kind of exemplary embodiment of the disclosure, the routing table of the configuration streaming media server includes：When described
When node is fringe node, the routing table for configuring the fringe node is the first routing table type；When the node for forwarding is saved
During point, the routing table for configuring the forward node is secondary route table type.
In a kind of exemplary embodiment of the disclosure, the next hop information also includes next-hop node type.
In a kind of exemplary embodiment of the disclosure, the routing table also upper hop including the streaming media server
Information, wherein the upper hop information includes upper hop type and alternative upper hop address.
In a kind of exemplary embodiment of the disclosure, also include：On the upper hop information includes that multiple is alternative
One when jumping address, and the corresponding multiple nodes in the multiple alternative upper hop address are tested respectively, obtains test result；Root
The upper hop optimum location of the streaming media server is determined according to the test result, wherein the upper hop optimum location is institute
State one of multiple alternative upper hop addresses.
According to an aspect of this disclosure, there is provided a kind of device for Streaming Media forwarding, for multilayer stream media network,
The multilayer stream media network includes many streaming media servers, and routing table, the road are configured with the streaming media server
Include the next hop information of the streaming media server by table, wherein the next hop information includes multiple alternative next-hop ground
Location, the device includes：Packet-receiving module, for receiving the packet that a upper node sends；Request module is sent, for sending out
Send route requests；Destination address receiver module, for receiving the destination address returned in response to the route requests, wherein described
Destination address is one of the multiple alternative next hop address；And data packet forward module, for according to the mesh
The packet is forwarded to corresponding next node by mark address.
In a kind of exemplary embodiment of the disclosure, the routing table also upper hop including the streaming media server
Information, the packet includes preset field, and the transmission request module includes：Routing direction determining unit, for according to institute
State preset field and the routing table determines the routing direction of the packet；Request unit is sent, for according to the forwarding
Direction sends the route requests.
According to an aspect of this disclosure, there is provided a kind of route device, including：Second configuration module, for configuring stream matchmaker
The routing table of body server, the routing table includes the next hop information of the streaming media server, wherein the next-hop is believed
Breath includes multiple alternative next hop address；Second test module, under the multiple alternative to the streaming media server
The corresponding multiple nodes in one jump address are tested respectively, obtain test result；Second optimum location determining module, for basis
The test result determines the next-hop optimum location of the streaming media server, wherein the next-hop optimum location is described
One of multiple alternative next hop address.
According to the method and device, method for routing and the device that are forwarded for Streaming Media of the disclosure, it is possible to increase many laminar flows
The autgmentability of the flow media data packet forwarding in media network topology and flexibility.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary, this can not be limited
It is open.
Brief description of the drawings
Its example embodiment is described in detail by referring to accompanying drawing, above and other target of the disclosure, feature and advantage will
Become more fully apparent.
Fig. 1 schematically shows the topological schematic diagram of the multilayer stream media network according to disclosure example embodiment；
Fig. 2 schematically shows a kind of flow of the method forwarded for Streaming Media according to disclosure example embodiment
Figure；
Fig. 3 schematically shows the flow for being used for the method that Streaming Media is forwarded according to the another kind of disclosure example embodiment
Figure；
Fig. 4 shows a kind of flow chart of the method for routing according to disclosure example embodiment；
Fig. 5 shows the flow chart of another method for routing according to disclosure example embodiment；
Fig. 6 shows a kind of block diagram of the device forwarded for Streaming Media according to disclosure example embodiment；
Fig. 7 shows to be used for the block diagram of the device that Streaming Media is forwarded according to the another kind of disclosure example embodiment；
Fig. 8 shows a kind of block diagram of the route device according to disclosure example embodiment；
Fig. 9 shows the block diagram of another route device according to disclosure example embodiment.
Specific embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with various shapes
Formula is implemented, and is not understood as limited to example set forth herein；Conversely, thesing embodiments are provided so that the disclosure will more
Fully and completely, and by the design of example embodiment those skilled in the art is comprehensively conveyed to.Accompanying drawing is only the disclosure
Schematic illustrations, be not necessarily drawn to scale.Identical reference represents same or similar part in figure, thus
Repetition thereof will be omitted.
Additionally, described feature, structure or characteristic can be combined in one or more implementations in any suitable manner
In mode.In the following description, there is provided many details are so as to provide fully understanding for implementation method of this disclosure.So
And, it will be appreciated by persons skilled in the art that the technical scheme of the disclosure can be put into practice and in the specific detail is omitted
Or more, or can be using other methods, constituent element, device, step etc..In other cases, it is not shown in detail or describes
Known features, method, device, realization, material or operation are to avoid that a presumptuous guest usurps the role of the host so that each side of the disclosure becomes mould
Paste.
Some block diagrams shown in accompanying drawing are functional entitys, not necessarily must be with physically or logically independent entity phase
Correspondence.These functional entitys can be realized using software form, or in one or more hardware modules or integrated circuit in fact
Existing these functional entitys, or these function realities are realized in heterogeneous networks and/or processor device and/or microcontroller device
Body.
Streaming Media refers in a streaming manner the media format of transmission audio, video and multimedia file in a network.Relative under
For the netcast form watched after load, Streaming Media is typically characterised by being put into after continuous Voice ＆ Video Information Compression
On the webserver, user watches when downloading, without waiting whole file download to finish.It is superior due to stream media technology
Property, the technology is widely used in video request program, video conference, long-distance education, tele-medicine and online live broadcast system.As new
The mark of generation the Internet, applications, stream media technology is obtaining development at full speed in recent years.It should be noted that the present invention is real
The Streaming Media applied in example is included but is not limited to：Video file or video flowing or audio file or audio stream.
Streaming media server is the core system of Stream Media Application, be operator provide a user with Video service key put down
Platform.The major function of streaming media server is that streaming media content is acquired, caches, dispatches and transmits broadcasting.Streaming Media should
The performance and service quality for both depending on media server are embodied with the main performance of system.Therefore, streaming media server is stream
The basis of media application system, is also topmost part.
Plug-flow is the process that live content is pushed to server；It is the existing live content of server to draw stream, with specified
The process that location is pulled.One complete live process, including collection, treatment, coding, package, plug-flow, transmission, transcoding, point
Hair, drawing flow, decode, play, and from plug-flow to broadcasting, then forward link by centre, and delay is lower, and Consumer's Experience is better.
Embodiment of the present invention provide firstly a kind of multilayer stream media network, by method and dress in other embodiment
Put and be applied to the multilayer stream media network.
Fig. 1 schematically shows the topological schematic diagram of the multilayer stream media network according to disclosure example embodiment.
As shown in figure 1, the multilayer stream media network includes many streaming media servers (MediaServer).
In the embodiment shown in fig. 1, according to each streaming media server the location of in network topology, described many
Streaming media server can be divided into fringe node (Edge Point, EP), and fringe node is typically Streaming Media plug-flow and draws stream
Point, such as EP11, EP12, EP13, EP14, EP21, EP22, EP23, EP24；Aggregation node (Aggregate Point, AP),
It is Streaming Media forward node, such as AP11, AP12, AP21, AP22 that aggregation node is usually deployed；Core node (Key Point,
KP), it is Streaming Media forward node that core node is usually deployed, and typically passes through private line network (such as optical fiber) between core node
Communication, such as KP11, KP21.It should be noted that the multilayer stream media network in Fig. 1 is only exemplary, limit is not used to
The system present invention, streaming media server quantity, streaming media server type and all types of streaming media servers in its network
Quantity can flexibly be set according to requirement in practical systems, and need not be disposed in strict accordance with the embodiment.
In the embodiment shown in fig. 1, the multilayer stream media network topological structure is a two-way graph structure, usually：
Edge deployment multiple EP is responsible for access service, and packet is conveyed to AP by EP by routing mechanism, and AP is forwarded by routing mechanism
To KP, KP can be used for being responsible for overseas transmission (but not limiting for overseas transmission) packet, equally on another road of topology,
There is also by the routing mode of KP-AP-EP.
The multilayer stream media network fringe node receive client (such as Client11, Client12 and/or
Client21, Client22) what is sent obtains the request of files in stream media, and receive what simultaneously playing stream media server was returned
Slice of data.
Link is one section of physical circuit from a node to adjacent node.In embodiments of the present invention, client sends
The request of files in stream media is obtained to streaming media server, to cause to establish TCP between client and streaming media server
(Transmission Control Protocol, transmission control protocol) is connected, that is, establish client and streaming media server
Between acquisition files in stream media request associated by link.
By talking about above, existing route is that static routing is realized mostly, i.e., static in the routing table of EP-AP-KP
Configuration completes the address of next-hop, in routing procedure, is directly route using next hop address.And in the embodiment of the present invention
Using Dynamic routing mechanisms, optimal routed path is looked in real time.
In embodiments of the present invention, routing table is configured with the streaming media server, the routing table includes the stream
The upper hop information and next hop information of media server.So it is able to ensure that from Streaming Media source and client both direction and sends
Data can find next-hop path.
So-called routing table, is a kind of carrier of record information, can be existed in the form of a list, it is also possible to program segment etc.
Form is present.Be named as routing table only for convenience of explanation rather than limitation.
In the exemplary embodiment, the upper hop information include upper hop type and alternative upper hop address, it is described under
One hop-information includes next-hop type and alternative next hop address.
Dynamic routing mechanisms in the embodiment of the present invention are as follows：Each streaming media server is configured with least one route
Table, the routing table basic structure can be as shown in table 1 below and 2.
Table 1：(R, R) type routing table
Table 2：(C, R) type routing table
Wherein, the D1 in table 1 and 2 represents the upper hop information, and the Type under D1 represents the upper hop type, under D1
Group represent the alternative upper hop address；The Type that D2 is represented under the next hop information, D2 represents the next-hop class
Group under type, D2 represents the alternative next hop address.
Wherein described upper hop type and the/next-hop type can be client class (Client is abbreviated as C), weight
Orientation class (Redirect is abbreviated as R), fringe node class (Edge is abbreviated as E).But the disclosure is not limited to this.
Wherein described alternative upper hop address (such as Group1, Group2) and/alternative next hop address are (for example
Group3, Group4, Group5, Group6) can be the host name of the corresponding streaming media server of upper one node/next node
(hostname), IP address etc. can be with any mark of the unique mark streaming media server.Flowing matchmaker in the following examples
Illustrated as a example by the hostname of body server.
It should be noted that the upper hop, next-hop in the embodiment of the present invention are that comparatively it is according to packet
Depending on routing direction.For example, in plug-flow, a certain streaming media server corresponds to upper hop address；When stream is drawn, stream matchmaker
Body server corresponds to next hop address.
In embodiments of the present invention, the Group information in each routing table is configured in its routing table, often by route device
Individual Group can serve as the alternate node of route.
When streaming media server is deployed on fringe node (EP), the routing table type of configuration then should be (C, the R) of table 2
Type；If the routing forwarding node (aggregation node or core node) of centre, then routing table should be configured to (R, the R) of table 1
Type.
In packet and streaming media server communication period, except encapsulate it is basic regard, audio pack and control signaling
At the same time it can also carry a preset field (such as UpStreamType fields).UpStreamType fields are earliest by client
Generation, sets its type for C, by its modified values is corresponding streaming media server when centre is by forwarding stream media server
hostName。
In the above-described embodiment, illustrated by taking the two-way converting in the network of packet as an example.But it is actual
On, the Dynamic routing mechanisms can also be only applied to unidirectional forwarding, still can be using static road in the routing mechanism of opposite direction
By or other routing modes.
In the exemplary embodiment, routing table is configured with the streaming media server, the routing table includes the stream
The next hop information of media server, wherein the next hop information includes multiple alternative next hop address.
Such as various technologies described herein can be used for various wireless communication systems, current 2G, and 3G communication systems are with
Generation communication system, such as global system for mobile communications (GSM, Global System for Mobile
Communications), CDMA (CDMA, Code Division Multiple Access) system, time division multiple acess
(TDMA, Time Division Multiple Access) system, WCDMA (WCDMA, Wideband Code
Division Multiple Access Wireless), frequency division multiple access (FDMA, Frequency Division Multiple
Addressing) system, OFDM (OFDMA, Orthogonal Frequency-Division Multiple
Access) system, Single Carrier Frequency Division Multiple Access (SC-FDMA) system, GPRS (GPRS, General Packet
Radio Service) system, Long Term Evolution (LTE, Long Term Evolution) system, and other such communication systems
System.
Client, can be that wireless terminal can also be catv terminal, and wireless terminal can refer to provide a user with voice
And/or the equipment of data connectivity, portable equipment with wireless connecting function or be connected to radio modem its
His processing equipment.Wireless terminal can be through wireless access network (for example, RAN, Radio Access Network) and one or many
Individual core net is communicated, and wireless terminal can be mobile terminal, such as mobile phone (or being " honeycomb " phone) and with shifting
The computer of dynamic terminal, for example, it may be portable, pocket, hand-held, built-in computer or vehicle-mounted mobile dress
Put, they exchange language and/or data with wireless access network.For example, PCS (PCS, Personal
Communication Service) phone, personal digital assistant (PDA, Personal Digital Assistant) etc. set
It is standby.Wireless terminal is referred to as system, remote terminal (Remote Terminal), access terminal (Access
Terminal), client (User Terminal), user agent (User Agent), user equipment (User Device) or
Subscriber's installation (User Equipment).
Fig. 2 schematically shows a kind of flow of the method forwarded for Streaming Media according to disclosure example embodiment
Figure.
As shown in Fig. 2 this is used for the method that Streaming Media is forwarded, for the multilayer stream media network in above-described embodiment, institute
Stating multilayer stream media network includes many streaming media servers.Routing table, the route are configured with the streaming media server
Table includes the upper hop information and next hop information of the streaming media server.The upper hop information include upper hop type and
Alternative upper hop address, the next hop information includes next-hop type and alternative next hop address.
The method is comprised the following steps.
In step s 110, the packet that a upper node sends is received, the packet includes preset field, described default
Field includes a upper node type.
In one embodiment, the preset field includes UpStreamType fields.But the disclosure is not limited to this.
In another embodiment, a upper node type can include client class (Client), redirect class (Redirect), edge
Node class (Edge) and arrival class (Reach).
In one embodiment, the method can also include Streaming Media initial phase, the corresponding stream of Streaming Media that will be generated
The host name (hostName) of the streaming media server at media identification (mediaId) and its place is added to integrated persistence node
On (Global Persistent Node, GPN).In another embodiment, only by the corresponding fringe node of Streaming Media (EP)
Hostname be added on the GPN nodes.In general, a streaming media server frequently includes multiple Streaming Medias, then this
When, the IP address of Streaming Media is identical, it is necessary to identifies (mediaId) by Streaming Media again and is distinguish between.So, stream matchmaker can be set up
Connection long between body server and/or between streaming media server and client, when running into abnormal conditions (such as network interruption
When), it is only necessary to the main frame gone on GPN nodes where searching out corresponding Streaming Media again by extracting corresponding information lays equal stress on newly-built
Vertical connection.
When the streaming media server of present node receives packet, the packet of parsing upstream (a upper node) request,
Obtain the UpStreamType fields such that it is able to know a upper node type.
In the step s 120, predetermined registration operation is performed according to a upper node type.
In the exemplary embodiment, it is described to be included according to the upper node type execution predetermined registration operation：When described upper one
When node type is client class, the forwarding side of the packet is determined according to the upper hop type and the next-hop type
To；Route requests are sent according to the routing direction；The destination address returned in response to the route requests is received, wherein described
Destination address is alternative one of upper hop address or the alternative next hop address described in the routing table；According to institute
State destination address and the packet is forwarded to corresponding next node.
Judge if a upper node type of the UpStreamType fields is Client classes, then it represents that the packet for receiving
Sent from client, then select the non-customer end of D2Type=R (Redirect the redirects class) type in its routing table
Next address of class is set to its destination address.
In the exemplary embodiment, the preset field also includes a upper node identification.A wherein described upper node identification
Can be not limited to for the corresponding streaming media server of a upper node or the host name (hostName) of client, but the present invention
This.
In the exemplary embodiment, it is described also to be included according to the upper node type execution predetermined registration operation：Change is described
A upper node type of preset field is attached most importance to orientation class, and it is currently to receive the packet to change a upper node identification
The mark of streaming media server；The preset field after by change is forwarded to next section after being encapsulated into the packet
Point.
After the current streaming media server determines the destination address of next-hop, package is carried out to the packet, if
UpStreamType field types are client, then be set to Redirect@hostName forms.
In the exemplary embodiment, it is described to be included according to the upper node type execution predetermined registration operation：When described upper one
Node identification attach most importance to orientation class when, the forwarding side of the packet is determined according to a upper node identification and the routing table
To；Route requests are sent according to the routing direction；The destination address returned in response to the route requests is received, wherein described
Destination address is alternative one of upper hop address or the alternative next hop address described in the routing table；According to institute
State destination address and the packet is forwarded to corresponding next node.
If for example, a upper node type of the UpStreamType fields for parsing is Redirect classes, then it represents that
The packet is, via forward node, at this moment to need the Redirect@hostName forms according to UpStreamType, solution
HostName values are separated out, its routing direction is then searched from its routing table as key assignments (key) using hostName, and take another
The destination address (bestDest) in individual direction is used as its forwarding address.
In the exemplary embodiment, it is described that the packet is forwarded to by corresponding next node according to the destination address
Including：The upper hop type or the next-hop type in the routing table judge the next node whether be
Fringe node class；When the next node is the fringe node class, the described upper node class of the preset field is changed
Type is terminal class, and changes the mark that a upper node identification is the streaming media server for currently receiving the packet；Will
The preset field after change is forwarded to the next node after being encapsulated into the packet.
For example, if it is judged that the corresponding next node of next hop address is that (the D types in its routing table are set Edge classes
It is E), then GPN nodes, the EP where finding the mediaId of the packet are inquired about, and be routed on the EP nodes, and encapsulation should
Data packet format is reach@hostName forms.
In the exemplary embodiment, it is described to be included according to the upper node type execution predetermined registration operation：When described upper one
Node type stops the forwarding of the packet to reach during class (reach), process corresponding service logic.
When the present node judges that a upper node type of the UpStreamType fields of the packet structure for receiving is
Reach, then show that the packet has arrived at corresponding fringe node, and the packet this time route and terminates, then stop searching, directly
Connect processing business logic.
The method for Streaming Media forwarding that present embodiment is provided, for complicated multilayer stream media network topology, leads to
Cross Dynamic routing mechanisms, using the teaching of the invention it is possible to provide high scalability, high stability, the Streaming Media forwarding routing plan of high flexibility.
On the other hand, the method for Streaming Media forwarding of the embodiment of the present invention can serve the transoceanic business of Streaming Media,
Can effectively carry transoceanic multimedia service business, and it is poor effectively to optimize the static autgmentability of current multilayer, flexibility
Relatively low structure, for transoceanic streaming media service provides more stable solution.
Fig. 3 schematically shows the flow for being used for the method that Streaming Media is forwarded according to the another kind of disclosure example embodiment
Figure.The method for being used for Streaming Media forwarding is used for multilayer stream media network, and the multilayer stream media network includes many Streaming Medias
Server.Routing table is configured with the streaming media server, the routing table includes the next-hop of the streaming media server
Information, wherein the next hop information includes multiple alternative next hop address.
As shown in figure 3, the method for being used for Streaming Media forwarding is comprised the following steps.
In step S210, the packet that a upper node sends is received.
The corresponding streaming media server of present node receives the packet that the corresponding streaming media server of a upper node sends.
In step S220, route requests are sent.
In one embodiment, when for unidirectional transmission, i.e., in the case of clearly knowing routing direction, the present node pair
The streaming media server answered sends route requests to a route device, and the route requests include the corresponding stream matchmaker of the present node
The identification information of body server such as host name, the route device finds the corresponding streaming media server according to the host name
Routing table, so as to return to the destination address of the corresponding next-hop of the streaming media server.The wherein specific route device is such as
The method of the destination address what screens next-hop from multiple alternative next hop address refers to following embodiments, no longer detailed herein
State.
In the exemplary embodiment, the routing table also upper hop information including the streaming media server.It is real one
Apply in example, the packet can include preset field.
In the exemplary embodiment, the transmission route requests include：It is true according to the preset field and the routing table
The routing direction of the fixed packet；The route requests are sent according to the routing direction.
The packet is believed by parsing the packet and obtaining the preset field and can obtain upper hop in the preset field
Breath, for example, go up the host name of a node type and the corresponding streaming media server of a upper node.It is corresponding according to a node on this
The host name of streaming media server can determine the forwarding of the packet by searching the upper hop information in the routing table
Direction.
In step S230, the destination address returned in response to the route requests is received, wherein the destination address is
One of the multiple alternative next hop address.
In step S240, the packet is forwarded to by corresponding next node according to the destination address.
Fig. 4 shows a kind of flow chart of the method for routing according to disclosure example embodiment.
As shown in figure 4, the method for routing is comprised the following steps.
In step S310, the routing table of streaming media server is configured according to node type.
The routing table of good each node (each streaming media server) is configured before reaching the standard grade.Routing table is configured mainly to this
The alternative next hop address of node, can include topological uplink and downlink both direction.Configuration routing table need to according to node type,
If for example, the node is fringe node, a upper node (Node) type of the node is Client.If the node is in itself
It is aggregation node, then goes up a node for fringe node, then the D Type values for being arranged on a node is E.
Wherein described routing table includes the upper hop information and next hop information of the streaming media server.
In the exemplary embodiment, the upper hop information includes multiple alternative upper hop addresses, the next hop information
Including multiple alternative next hop address.
In the exemplary embodiment, methods described can also include step S320：It is the multiple in the routing table
Alternative upper hop address and the corresponding multiple nodes of the multiple alternative next hop address are tested respectively, obtain test knot
Really.
In the exemplary embodiment, methods described can also include step S330：According to the test result determines
Upper hop optimum location and the multiple alternative next-hop ground in the multiple alternative upper hop address of streaming media server
Next-hop optimum location in location.
TestService surveys are done in timing to the multiple alternative next hop address and the multiple alternative upper hop address
Examination, can include uplink and downlink both direction.Alternative next hop address during TestService is mainly to routing table is N
Secondary ping.The result that each ping services are returned is sorted.If doing descending arrangement, corresponding streaming media server is updated
Acquiescence next hop address is that destination address is first result after TestService sequences.If doing ascending order arrangement, update
The acquiescence next hop address of corresponding streaming media server is that destination address is the last item result after TestService sequences.
In one embodiment, can be corresponding according to the alternative next hop address and/or the alternative upper hop address
The comprehensive grading of the one or more in loading condition, cpu busy percentage, memory usage of streaming media server etc. comes to it
It is ranked up, selects the streaming media server of best performance as the target streaming media server of next-hop.
In the exemplary embodiment, methods described can also include step S340：Receive route requests.
Wherein, route device is received and is currently received the route requests that the streaming media server of packet sends, institute
Host name (for search corresponding routing table), routing direction of the route requests including the streaming media server are stated (for determining
One in the multiple alternative upper hop addresses of selection or multiple alternative next hop address is used as destination address).
In the exemplary embodiment, methods described can also include step S350：According to the route requests will be described on
One jump optimum location or the next-hop optimum location are sent to the streaming media server as destination address.
Routing direction in the route requests will the corresponding upper hop optimum location or the next-hop
Optimum location is back to the streaming media server for being currently received packet as destination address.
It should be noted that in one embodiment, above-mentioned steps S320-330 and above-mentioned steps S340-S350 do not have elder generation
After afterwards, i.e., the upper hop optimum location, the next-hop in route device fixed time test screening uplink and downlink direction be most
It is asynchronous between transmission route requests behind excellent address and streaming media server reception packet, so, when route device is received
To after route requests, the upper hop optimum location or the next-hop optimum location that will can have been screened in real time
The streaming media server for sending route requests is returned to, streaming media server is withouted waiting for.
In another embodiment, the route device can also wait the route requests for receiving streaming media server transmission
Afterwards, then start above-mentioned test screen sequence work, find out the upper hop optimum location or described of corresponding routing table
Next-hop optimum location returns to the streaming media server that this sends route requests.
Present embodiment provide method for routing, by route device to multilayer stream media network in each Streaming Media clothes
Business device configuration routing table, the routing table includes that the alternative upper hop address of the multiple of uplink and downlink both direction and multiple are alternative
Next hop address, the streaming media service for being currently received packet is returned to by testing the optimal destination address of real-time selection
Device, so that the streaming media server can find optimal routed path according to the real-time performance situation of each streaming media server,
It is achieved thereby that the dynamic routing of Streaming Media forwarding.
Fig. 5 shows the flow chart of another method for routing according to disclosure example embodiment.
As shown in figure 5, the method for routing is comprised the following steps.
In step S510, the routing table of streaming media server is configured, the routing table includes the streaming media server
Next hop information, wherein the next hop information includes multiple alternative next hop address.
In the exemplary embodiment, the next hop information also includes next-hop node type.
In the exemplary embodiment, the node includes fringe node and forward node.
In the exemplary embodiment, the forward node includes aggregation node and core node, wherein the core node
Between by private line network communicate.
In the exemplary embodiment, the routing table of the configuration streaming media server includes：When the node is edge section
During point, the routing table for configuring the fringe node is the first routing table type；When the node is forward node, configuration is described
The routing table of forward node is secondary route table type.
In the exemplary embodiment, the routing table also upper hop information including the streaming media server.
In step S520, to the corresponding multiple nodes of the multiple alternative next hop address of the streaming media server
Tested respectively, obtained test result.
In step S530, the next-hop optimum location of the streaming media server is determined according to the test result, its
Described in next-hop optimum location be one of the multiple alternative next hop address.
In the exemplary embodiment, methods described also includes：Receive route requests；Under will be described according to the route requests
One jump optimum location is sent to the streaming media server as destination address, wherein the streaming media server is according to the mesh
The packet that mark address will receive is forwarded to corresponding next node.
In the exemplary embodiment, also include：It is right when the upper hop information includes multiple alternative upper hop addresses
The corresponding multiple nodes in the multiple alternative upper hop address are tested respectively, obtain test result；According to the test knot
Fruit determines the upper hop optimum location of the streaming media server, wherein the upper hop optimum location for it is the multiple it is alternative on
One jumps one of address.
Other guide in the embodiment of the present invention refers to above-described embodiment, will not be repeated here.
Device provided in an embodiment of the present invention is described below, because the implementation process of its corresponding module is in above-mentioned side
Had in method embodiment and elaborated, the content in above method embodiment can be applied to following device embodiments.
Fig. 6 shows a kind of block diagram of the device forwarded for Streaming Media according to disclosure example embodiment.
As shown in fig. 6, the device 100 for being used for Streaming Media forwarding is used for multilayer stream media network, multilayer Streaming Media net is stated
Network includes many streaming media servers.In one embodiment, routing table, the routing table are configured with the streaming media server
Upper hop information and next hop information including the streaming media server.In another embodiment, the upper hop packet
Upper hop type and alternative upper hop address are included, the next hop information includes next-hop type and alternative next hop address.
The device 100 includes：Packet-receiving module 110 and performing module 120.
Wherein packet-receiving module 110 is used to receive the packet of node transmission, and the packet includes default
Field, the preset field includes a upper node type.
Wherein performing module 120 is used to perform predetermined registration operation according to a upper node type.
In the exemplary embodiment, the preset field also includes a upper node identification.
In the exemplary embodiment, performing module 120 includes：Routing direction determining unit, for when a upper node
Type attach most importance to orientation class when, the routing direction of the packet is determined according to a upper node identification and the routing table；Hair
Request unit is sent, for sending route requests according to the routing direction；Destination address receiving unit, for receiving in response to institute
State the destination address of route requests return, wherein the destination address be alternative upper hop address described in the routing table or
One of described alternative next hop address；Data packet forwarding unit, for being turned the packet according to the destination address
It is sent to corresponding next node.
Fig. 7 shows to be used for the block diagram of the device that Streaming Media is forwarded according to the another kind of disclosure example embodiment.The use
It is used for multilayer stream media network in the device 200 of Streaming Media forwarding, the multilayer stream media network includes many streaming media services
Device.Routing table is configured with wherein described streaming media server, the routing table includes the next-hop of the streaming media server
Information, wherein the next hop information includes multiple alternative next hop address.
As shown in fig. 7, the device 200 for being used for Streaming Media forwarding includes packet-receiving module 210, sends request module
220th, destination address receiver module 230 and data packet forward module 240.
Wherein packet-receiving module 210 is used to receive the packet of node transmission.
Wherein sending request module 220 is used to send route requests.
In the exemplary embodiment, the routing table also upper hop information including the streaming media server.It is real one
Apply in example, the packet includes preset field.
In the exemplary embodiment, sending request module 220 includes：Routing direction determining unit, for according to described pre-
If field and the routing table determine the routing direction of the packet；Request unit is sent, for according to the routing direction
Send the route requests.
Wherein destination address receiver module 230 is used to receive the destination address returned in response to the route requests, wherein
The destination address is one of the multiple alternative next hop address.
Wherein data packet forward module 240 is corresponding next for being forwarded to the packet according to the destination address
Node.
Fig. 8 shows a kind of block diagram of the route device according to disclosure example embodiment.
As shown in figure 8, the route device 300 includes the first configuration module 310, the first test module 320 and first most
Excellent address determination module 330.
First configuration module 310 is used to be configured according to node type the routing table of streaming media server, wherein the route
Table includes the upper hop information and next hop information of the streaming media server, and the upper hop information includes multiple alternative upper one
Address is jumped, the next hop information includes multiple alternative next hop address.
First test module 320 be used for the routing table in the multiple alternative upper hop address and the multiple standby
Select the corresponding multiple nodes of next hop address to be tested respectively, obtain test result.
First optimum location determining module 330 is used for according to the test result determines the streaming media server
The next-hop in upper hop optimum location and the multiple alternative next hop address in multiple alternative upper hop addresses is optimally
Location.
Fig. 9 shows the block diagram of another route device according to disclosure example embodiment.
As shown in figure 9, the route device 400 includes the second configuration module 410, the second test module 420 and second most
Excellent address determination module 430.
Wherein the second configuration module 410 is used to configure the routing table of streaming media server, and the routing table includes the stream
The next hop information of media server, wherein the next hop information includes multiple alternative next hop address.
Wherein the second test module 420 is used for the multiple alternative next hop address correspondence to the streaming media server
Multiple nodes tested respectively, obtain test result.
Wherein the second optimum location determining module 430 is used to determine the streaming media server according to the test result
Next-hop optimum location, wherein the next-hop optimum location is one of the multiple alternative next hop address.
It will be clearly understood that the present disclosure describes how being formed and use particular example, but the principle of the disclosure is not limited to
Any details of these examples.Conversely, the teaching based on disclosure disclosure, these principles can be applied to many other
Implementation method.
Fig. 2,3,4 or 5 are shown according to the method forwarded for Streaming Media of disclosure example embodiment or route side
The flow chart of method.The method can for example using the device or route device that are forwarded for Streaming Media as shown in Fig. 6,7,8 or 9
Realize, but disclosure not limited to this.It should be noted that Fig. 2,3,4 or 5 are only the methods according to disclosure example embodiment
Included treatment is schematically illustrated, rather than limitation purpose.It can be readily appreciated that the treatment shown in Fig. 2,3,4 or 5 is not intended that
Or limit the time sequencing of these treatment.In addition, being also easy to understand, these treatment can be for example in multiple module/process/lines
Either synchronously or asynchronously performed in journey.
Through the above description of the embodiments, those skilled in the art is it can be readily appreciated that example described herein is implemented
Mode can be realized by software, it is also possible to be realized by way of software is with reference to necessary hardware.Therefore, according to the disclosure
The technical scheme of implementation method can be embodied in the form of software product, and the software product can store non-volatile at one
Property storage medium (can be CD-ROM, USB flash disk, mobile hard disk etc.) in or network on, including some instructions are causing a calculating
Equipment (can be personal computer, server, mobile terminal or network equipment etc.) is performed according to disclosure implementation method
Method.
More than it is particularly shown and described the illustrative embodiments of the disclosure.It should be appreciated that the disclosure is not limited
In detailed construction described herein, set-up mode or implementation method；Conversely, the disclosure is intended to cover be included in appended claims
Spirit and scope in various modifications and equivalence setting.
Claims (13)
1. a kind of method for Streaming Media forwarding, for multilayer stream media network, the multilayer stream media network includes many
Streaming media server, it is characterised in that routing table is configured with the streaming media server, the routing table includes the stream matchmaker
The next hop information of body server, wherein the next hop information includes multiple alternative next hop address, the method includes following
Step：
Receive the packet that a upper node sends；
Send route requests；
The destination address returned in response to the route requests is received, wherein the destination address is the multiple alternative next-hop
One of address；And
The packet is forwarded to by corresponding next node according to the destination address.
2. method according to claim 1, it is characterised in that the routing table is also upper including the streaming media server
One hop-information, the packet includes preset field, and the transmission route requests include：
The routing direction of the packet is determined according to the preset field and the routing table；
The route requests are sent according to the routing direction.
3. a kind of method for routing, it is characterised in that including：
The routing table of streaming media server is configured, the routing table includes the next hop information of the streaming media server, wherein
The next hop information includes multiple alternative next hop address；
The corresponding multiple nodes of the multiple alternative next hop address to the streaming media server are tested respectively, are obtained
Test result；
The next-hop optimum location of the streaming media server is determined according to the test result, wherein the next-hop is optimally
Location is one of the multiple alternative next hop address.
4. method according to claim 3, it is characterised in that also include：
Receive route requests；
Sent the next-hop optimum location as destination address to the streaming media server according to the route requests, its
Described in streaming media server corresponding next node is forwarded to according to the packet that the destination address will be received.
5. method according to claim 3, it is characterised in that the node includes fringe node and forward node.
6. method according to claim 5, it is characterised in that the forward node includes aggregation node and core node,
Communicated by private line network between wherein described core node.
7. method according to claim 5, it is characterised in that the routing table of the configuration streaming media server includes：
When the node is fringe node, the routing table for configuring the fringe node is the first routing table type；
When the node is forward node, the routing table for configuring the forward node is secondary route table type.
8. method according to claim 3, it is characterised in that the next hop information also includes next-hop node type.
9. method according to claim 3, it is characterised in that the routing table is also upper including the streaming media server
One hop-information, wherein the upper hop information includes upper hop type and alternative upper hop address.
10. method according to claim 9, it is characterised in that also include：
It is corresponding to the multiple alternative upper hop address when the upper hop information includes multiple alternative upper hop addresses
Multiple nodes are tested respectively, obtain test result；
The upper hop optimum location of the streaming media server is determined according to the test result, wherein the upper hop is optimally
Location is one of the multiple alternative upper hop address.
A kind of 11. devices for Streaming Media forwarding, for multilayer stream media network, the multilayer stream media network includes many
Streaming media server, it is characterised in that routing table is configured with the streaming media server, the routing table includes the stream matchmaker
The next hop information of body server, wherein the next hop information includes multiple alternative next hop address, the device includes：
Packet-receiving module, for receiving the packet that a upper node sends；
Request module is sent, for sending route requests；
Destination address receiver module, for receiving the destination address returned in response to the route requests, wherein target ground
Location is one of the multiple alternative next hop address；And
Data packet forward module, for the packet to be forwarded into corresponding next node according to the destination address.
12. devices according to claim 11, it is characterised in that the routing table also includes the streaming media server
Upper hop information, the packet includes preset field, and the transmission request module includes：
Routing direction determining unit, the forwarding side for determining the packet according to the preset field and the routing table
To；
Request unit is sent, for sending the route requests according to the routing direction.
A kind of 13. route devices, it is characterised in that including：
Second configuration module, the routing table for configuring streaming media server, the routing table includes the streaming media server
Next hop information, wherein the next hop information includes multiple alternative next hop address；
Second test module, for the corresponding multiple nodes of the multiple alternative next hop address to the streaming media server
Tested respectively, obtained test result；
Second optimum location determining module, the next-hop for determining the streaming media server according to the test result is optimal
Address, wherein the next-hop optimum location is one of the multiple alternative next hop address.
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| CN106792261B (en) | 2020-06-09 |
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