WO2017096841A1 - 一种拉流控制的方法、装置及系统 - Google Patents

一种拉流控制的方法、装置及系统 Download PDF

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Publication number
WO2017096841A1
WO2017096841A1 PCT/CN2016/088878 CN2016088878W WO2017096841A1 WO 2017096841 A1 WO2017096841 A1 WO 2017096841A1 CN 2016088878 W CN2016088878 W CN 2016088878W WO 2017096841 A1 WO2017096841 A1 WO 2017096841A1
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WIPO (PCT)
Prior art keywords
server
live
source server
source
live video
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Ceased
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PCT/CN2016/088878
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English (en)
French (fr)
Inventor
刘凤玉
魏立志
韩峰
林正宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Le Holdings Beijing Co Ltd
LeCloud Computing Co Ltd
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Le Holdings Beijing Co Ltd
LeCloud Computing Co Ltd
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Priority to US15/246,455 priority Critical patent/US20170163706A1/en
Publication of WO2017096841A1 publication Critical patent/WO2017096841A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60Network streaming of media packets
    • H04L65/75Media network packet handling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60Network streaming of media packets
    • H04L65/70Media network packetisation

Definitions

  • Embodiments of the present invention relate to the field of electrical communication technologies, and in particular, to a method, device, and system for pull flow control.
  • Streaming refers to the form of media that streams audio, video, and multimedia files over a network.
  • the typical feature of streaming media is that compressed audio and video information is compressed and placed on a network server, and the user can watch while downloading without waiting for the entire file to be downloaded. Due to the superiority of streaming media server streaming technology, this technology is widely used in video on demand, video conferencing, distance education, telemedicine and online live broadcast systems.
  • the provider of the live video file pushes the streaming media file to the source server through push streaming technology.
  • the viewer sends a viewing request to pull the live video file stream to the viewer's client through the streaming technology.
  • the pull stream technology refers to the live video file stream pushed by the live video file provider from the source server, and is pulled to the viewer's client. During the pull process, multiple servers may pass. In the prior art, if the live video stream requested by the viewer is not in the source server, even in other third party servers, the viewer cannot view the live video.
  • the invention provides a method, a device and a system for pulling flow control, which can solve the problem that the viewer cannot Watch the issue of live video pushed to a third-party server.
  • the present invention provides a method of pull flow control, the method comprising:
  • the source server is instructed to pull the video stream of the live video to the third-party server;
  • the present invention provides a device for pull flow control, the device comprising:
  • a first receiving unit configured to receive a user request forwarded by a content distribution network CDN server, where the user request is used to request to watch a live video;
  • a detecting unit configured to detect whether a streaming state of the live video requested by the user received by the first receiving unit is live broadcast, and the flow state is a streaming state of the live video requested by the user;
  • the indicating unit is configured to: if the flow state of the source server side detected by the detecting unit is not being broadcasted, instructing the source server to pull the video stream of the live video to a third-party server;
  • a second receiving unit configured to receive a flow status returned by the source server, where the flow status returned by the source server is being broadcasted
  • a sending unit configured to send a return path of the video stream to the CDN server, if the flow status received by the second receiving unit is live, so that the CDN server sends the return path To the client.
  • the present invention also provides another device for pull flow control, the device comprising:
  • One or more processors are One or more processors.
  • the memory stores instructions that are configured to be executed by the one or more processors, and the one or more processors can perform the following operations by executing the instructions:
  • the source server is instructed to pull the video stream of the live video to the third-party server;
  • the source path of the video stream is sent to the CDN server, so that the CDN server sends the return path to the client.
  • the present invention provides a pull flow control system, the system comprising: a client,
  • CDN server Content distribution network CDN server, control center and source server;
  • the client is configured to send a user request
  • the CDN server is configured to forward a user request, receive a source path, and send the return path to the client.
  • the control center is configured to detect whether the flow state of the source server is live, and if not, the source server is instructed to pull the video stream of the live video requested by the user to the third server, and receive the Determining the flow status returned by the source server, and sending the return source path of the video stream to the CDN server;
  • the source server is configured to pull a video stream of the live video to a third-party server, and send the stream status of the live video to the control center.
  • the method, the device and the system for the pull flow control provided by the present invention can receive the user request forwarded by the CDN server, and check whether the flow state of the live video requested to be viewed on the source server side is live broadcast, if the flow on the source server side If the status is not live, the source server is instructed to pull the video stream of the live video to the third-party server. If the source server successfully pulls the video stream of the live video from the third party, and receives the stream status returned by the source server, the source path of the live video stream is sent to the CDN server, so that the CDN server sends the source path to the client. Compared with the prior art, the present invention can receive the user request forwarded by the CDN server.
  • the present invention can instruct the source server to pull the live video stream to the third-party server, and pull the live video stream of the third-party server to the source server, and the viewer can watch the live video pushed to the third-party server.
  • FIG. 1 is a flowchart of a method for controlling pull flow according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for controlling pull flow according to an embodiment of the present invention
  • FIG. 3 is a block diagram showing the composition of a device for pulling flow control according to an embodiment of the present invention
  • FIG. 4 is a block diagram of an apparatus for providing another pull flow control according to an embodiment of the present invention.
  • FIG. 5 is a block diagram of a system for pulling current control according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of an apparatus for controlling pull flow according to an embodiment of the present invention.
  • the embodiment of the present invention provides a method for controlling the pull flow. As shown in FIG. 1 , the method includes:
  • CDN Content Delivery Network
  • CDN Content Delivery Network
  • the role of CDN is to adopt streaming media server cluster technology. To overcome the shortcomings of single-system system output bandwidth and insufficient concurrency, it can greatly increase the number of concurrent streams supported by the system, and reduce or avoid the adverse effects caused by single-point failure.
  • the CDN uses the global load balancing technology to point the user's access to the working streaming server closest to the user, and the streaming server directly responds to the user's request. If there is no content to be accessed by the user in the server, the corresponding content will be automatically retrieved from the source server according to the configuration and provided to the user.
  • User requests are sent by the client, including information requesting to watch live video.
  • the client sends a user request, and the CDN server that is working closest to the user receives the user request and forwards it to the control center.
  • Streaming media is a form of media that is broadcasted side by side.
  • the flow status refers to the flow status of the live video requested by the user. Check whether the flow status of the live video on the source server is live, that is, whether the stream status of the live video requested by the user is being broadcast. If you are broadcasting live, you can play it as streaming media.
  • Source server providing streaming media files.
  • the provider of the streaming media pushes the streaming media file to the source server and the streaming is not completed.
  • the corresponding streaming media file on the source server side is being broadcast live.
  • the flow status is detected on the source server side.
  • the source server is instructed to pull the video stream of the live video to the third-party server.
  • the source server receives the pull flow indication, it searches for the video stream requested by the user in the third-party server, and if the video stream requested by the user is found, the video stream is pulled to the source server.
  • the source server pulls the video stream requested by the user, the stream state of the video stream is live, and the source server sends the stream status of the video stream to the control center. If the source server does not pull the video stream requested by the user, the stream state of the video is changed, and the source server does not resend the stream state of the video stream.
  • the control center receives the flow status returned by the source server. In the source server The stream status is live, indicating that the video stream of the video exists in the source server.
  • the source path of the video stream is sent to the CDN server, and the CDN server sends the source path to the client, so that the client can realize the side-by-side broadcast of the live video.
  • the method for controlling the pull flow can detect whether the flow state of the live video requested to be viewed in the source server book is live broadcast, if the flow state of the source server side is not received by receiving the user request forwarded by the CDN server. If the live broadcast is in progress, the source server is instructed to pull the video stream of the live video to the third-party server. If the source server successfully pulls the video stream of the live video from the third party, and receives the stream status returned by the source server, the source path of the live video stream is sent to the CDN server, so that the CDN server sends the source path to the client.
  • the embodiment of the present invention can pull the flow when receiving the user request forwarded by the CDN server, and does not pull the flow when the user request is not received, thereby avoiding invalidating the flow and wasting server resources.
  • the present invention can instruct the original server to pull the live video stream to the third-party server, and pull the live video stream of the third-party server to the source server, and the viewer can watch the live video pushed to the third-party server.
  • the embodiment of the present invention provides another method for pull flow control, as shown in FIG. 2, the method includes:
  • 201 Receive a user request forwarded by a content distribution network CDN server, and the user requests to request to watch a live video.
  • the received user request includes time information of the request, user information, live video information, and a play request for the live video.
  • Received user requests are forwarded by the CDN server.
  • the CDN server does not provide a video stream of live video for the client.
  • the user request contains user account information, and different accounts have different permissions. Different video rights and different video resources can be viewed.
  • the client that issues the user request is authenticated, that is, whether the client has the right to play the video. If the client does not have the right to view the client requesting the video, the client returns a message with no viewing rights. If the client Have the right to watch the client send the user request video, and then carry out the next test.
  • the video streamed by the streaming media provider is stored, and the information that the video stream provided by the streaming media provider is being broadcasted is sent to the control center. If the flow status of the live video is detected in the control center, it is the flow status of the live video on the source server side.
  • the video stream of the live video is directly pulled from the source server.
  • the video stream of the live video can be directly pulled from the source server to complete the streaming of the video stream.
  • the source server is instructed to pull the video stream of the live video to the third-party server.
  • the live video requested by the user has a stream address
  • the source server directly pulls the video stream of the live video from the third-party server by using the stream address.
  • the source server is instructed to pull the video stream of the live video to the third-party server, and the frequency of the source server to pull the video stream from the third-party server needs to be restricted.
  • the pull operation of the source server has a fixed time interval.
  • the server requests the same live video request with the same request time to save the server resources by one pull stream; on the other hand, if the user requests too frequently, it is a A malicious attack on the server can prevent malicious attacks on the server through frequent user requests by limiting the frequency of the pull stream and reducing the number of pulls.
  • the source server pulls the live video stream, change the stream status of the live video. Receiving the stream status of the live video, the stream status of the live video is returned by the source server.
  • the source path of the video stream is sent to the CDN server, and the CDN server sends the source path to the client, so that the client can realize the side-by-side broadcast of the live video.
  • another embodiment of the present invention further provides an apparatus for pull flow control.
  • the device embodiment corresponds to the foregoing method embodiment, and can implement all the contents in the foregoing method embodiments. For ease of reading, the device embodiment only briefly describes the content in the foregoing method embodiments, and the details in the method embodiments are not described one by one.
  • the apparatus includes a first receiving unit 31, a detecting unit 32, an indicating unit 33, a second receiving unit 34, and a transmitting unit 35. among them,
  • a first receiving unit 31 configured to receive a user request forwarded by a content distribution network CDN server, where the user requests to request to watch a live video;
  • the detecting unit 32 is configured to detect whether the flow status of the live video requested by the user received by the first receiving unit 31 on the source server side is live, and the flow status is the flow status of the live video requested by the user;
  • the indicating unit 33 is configured to: if the flow state of the source server side detected by the detecting unit 32 is not being broadcasted, instruct the source server to pull the video stream of the live video to the third party server;
  • the second receiving unit 34 is configured to receive a flow state returned by the source server, where the flow state returned by the source server is being broadcasted;
  • the sending unit 35 is configured to send the return path of the video stream to the CDN server if the flow status received by the second receiving unit 34 is live, so that the CDN server sends the return path to the client.
  • the device further includes:
  • the authentication unit 36 is configured to authenticate the client that sends the user request received by the first receiving unit 31 to identify whether the client has the right to play the live video.
  • the device further includes:
  • the pull unit 37 is configured to: after the detecting unit 32 detects whether the stream state on the source server side is being broadcasted, if the stream state on the source server side is being broadcasted, the video stream of the live video is directly pulled from the source server.
  • the indicating unit 33 includes:
  • the limiting module 331 is configured to limit the frequency at which the source server pulls the video stream to the third-party server.
  • an embodiment of the present invention further provides a system for pull flow control.
  • the system embodiment corresponds to the foregoing method embodiment, and can implement all the contents in the foregoing method embodiments.
  • the system embodiment is only for the foregoing method.
  • the content in the embodiment is briefly described, and the details in the method embodiment are not described one by one.
  • the system includes a client 51, a content distribution network CDN server 52, a control center 53, and a source server 54. specific:
  • a client 51 configured to send a user request
  • the CDN server 52 is configured to forward the user request sent by the client 51, receive the return source path, and send the return source path to the client.
  • the control center 53 is configured to detect whether the streaming status of the live video requested by the user sent by the CDN server 52 on the source server side is live broadcast. If not, the source server instructs the source server to pull the live video requested by the user to the third-party server. Video stream, receiving the stream status returned by the source server, sending the return path of the video stream to the CDN server 52;
  • the source server 54 is configured to pull a video stream of the live video to the third-party server, and send the stream status of the live video to the control center 53.
  • the apparatus and system for the pull flow control provided by the embodiment of the present invention can receive the user request forwarded by the CDN server, and check whether the flow state of the live video requested to be viewed in the source server book is live broadcast, if the flow on the source server side If the status is not live, the source server is instructed to pull the video stream of the live video to the third-party server. If the source server successfully pulls the video stream of the live video from the third party, and receives the stream status returned by the source server, the source path of the live video stream is sent to the CDN server, so that the CDN server sends the source path to the client.
  • the embodiment of the present invention can pull the flow when receiving the user request forwarded by the CDN server, and does not pull the flow when the user request is not received, thereby avoiding invalidating the flow and wasting server resources.
  • the present invention can instruct the original server to pull the live video stream to the third-party server, and pull the live video stream of the third-party server to the source server, and the viewer can watch the live video pushed to the third-party server.
  • the functions of the respective unit modules used in the embodiments of the present invention can be implemented by a hardware processor.
  • FIG. 6 is a schematic structural diagram of a device for pulling current control according to an embodiment of the present invention.
  • the device for controlling the pull flow may include: a processor 61 and a communication interface ( Communications Interface 62, memory 63 and bus 64, wherein processor 61, communication interface 62, and memory 63 are completed via bus 64. Communication with each other. Communication interface 62 can be used for information transfer between the server and the client.
  • the processor 61 may call the logic instructions in the memory 63 to perform a method of receiving a user request forwarded by the content distribution network CDN server, the user requesting for requesting to watch the live video; detecting the stream of the live video on the source server side If the status is the live broadcast, the flow status is the flow status of the live video requested by the user; if the flow status of the source server is not the live broadcast, the source server is instructed to pull the live video to the third-party server. a video stream; receiving a flow status returned by the source server, the flow status returned by the source server is being broadcasted; sending a return path of the video stream to the CDN server, so that the CDN server is The return source path is sent to the client.
  • the logic instructions in the memory 63 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .
  • the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located A place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without deliberate labor.

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Abstract

本发明提供一种拉流控制的方法、装置及系统,涉及电通信技术领域,为解决观看方无法观看推送到第三方服务器的直播视频的问题而发明。本发明的方法包括:接收内容分发网络CDN服务器转发的用户请求,用户请求用于请求观看直播视频;检测直播视频在源服务器侧的流状态是否为正在直播,流状态为用户请求的直播视频的流状态;若源服务器侧的流状态不为正在直播,则指示源服务器向第三方服务器拉取直播视频的视频流;接收源服务器返回的流状态,源服务器返回的流状态为正在直播;将视频流的回源路径发送给CDN服务器,以使得CDN服务器将回源路径发送给客户端。本发明主要应用于流媒体文件的播放过程中。

Description

一种拉流控制的方法、装置及系统
本申请基于申请号为2015108893292、申请日为2015年12月7日的中国专利申请提出,并要求该中国专利申请的优先权,该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明实施例涉及电通信技术领域,尤其涉及一种拉流控制的方法、装置及系统。
背景技术
随着互联网技术的飞速发展,越来越多的信息如影视、音乐等逐渐以网络作为传播的媒介。流媒体指以流方式在网络中传送音频、视频和多媒体文件的媒体形式。相对于下载后观看的网络播放形式而言,流媒体的典型特征是把连续的音频和视频信息压缩后放到网络服务器上,用户边下载边观看,而不必等待整个文件下载完毕。由于流媒体服务器流媒体技术的优越性,该技术广泛应用于视频点播、视频会议、远程教育、远程医疗和在线直播系统中。
直播视频文件的提供方,通过推流技术将流媒体文件推送到源服务器。在观看直播视频文件时,观看方发出观看请求,通过拉流技术将直播视频文件流拉到观看方的客户端。
拉流技术是指从源服务器端,将直播视频文件提供方推送的直播视频文件流,拉取到观看方的客户端。在拉流过程中,可能会经过多个服务器。在现有技术中,若观看方请求观看的直播视频流不在源服务器中,即使在其他第三方服务器中,观看方无法观看该直播视频。
发明内容
本发明提供一种拉流控制的方法、装置及系统,能够解决观看方无法 观看推送到第三方服务器的直播视频的问题。
为了解决上述技术问题,一方面,本发明提供一种拉流控制的方法,该方法包括:
接收内容分发网络CDN服务器转发的用户请求,所述用户请求用于请求观看直播视频;
检测所述直播视频在源服务器侧的流状态是否为正在直播,所述流状态为所述用户请求的直播视频的流状态;
若源服务器侧的流状态不为正在直播,则指示所述源服务器向第三方服务器拉取所述直播视频的视频流;
接收所述源服务器返回的流状态,所述源服务器返回的流状态为正在直播;
将所述视频流的回源路径发送给所述CDN服务器,以使得所述CDN服务器将所述回源路径发送给客户端。
另一方面,本发明提供了一种拉流控制的装置,该装置包括:
第一接收单元,用于接收内容分发网络CDN服务器转发的用户请求,所述用户请求用于请求观看直播视频;
检测单元,用于检测所述第一接收单元接收到的用户请求的直播视频在源服务器侧的流状态是否为正在直播,所述流状态为所述用户请求的直播视频的流状态;
指示单元,用于若所述检测单元检测到的源服务器侧的流状态不为正在直播,则指示所述源服务器向第三方服务器拉取所述直播视频的视频流;
第二接收单元,用于接收所述源服务器返回的流状态,所述源服务器返回的流状态为正在直播;
发送单元,用于若所述所述第二接收单元接收的流状态为正在直播,则将视频流的回源路径发送给所述CDN服务器,以使得所述CDN服务器将所述回源路径发送给客户端。
本发明还提供了另一种拉流控制的装置,该装置包括:
一个或多个处理器;和
存储器;
其中所述存储器中存储有指令,经配置所述指令由所述一个或多个处理器执行,所述一个或多个处理器通过执行所述指令能进行如下操作:
接收内容分发网络CDN服务器转发的用户请求,所述用户请求用于请求观看直播视频;
检测接收到的用户请求的直播视频在源服务器侧的流状态是否为正在直播,所述流状态为所述用户请求的直播视频的流状态;
若检测到的源服务器侧的流状态不为正在直播,则指示所述源服务器向第三方服务器拉取所述直播视频的视频流;
接收所述源服务器返回的流状态,所述源服务器返回的流状态为正在直播;
若接收的流状态为正在直播,则将视频流的回源路径发送给所述CDN服务器,以使得所述CDN服务器将所述回源路径发送给客户端。
再一方面,本发明提供了一种拉流控制的系统,该系统包括:客户端、
内容分发网络CDN服务器、控制中心和源服务器;
所述客户端,用于发送用户请求;
所述CDN服务器,用于转发用户请求,接收回源路径,并将回源路径发送给客户端;
所述控制中心,用于检测源服务器侧的流状态是否为正在直播,若不为正在直播,则指示所述源服务器向第三方服务器拉取所述用户请求的直播视频的视频流,接收所述源服务器返回的流状态,将所述视频流的回源路径发送给所述CDN服务器;
所述源服务器,用于向第三方服务器拉取所述直播视频的视频流,将所述直播视频的流状态发送给控制中心。
本发明提供的一种拉流控制的方法、装置及系统,能够通过接收CDN服务器转发的用户请求,检查请求观看的直播视频在源服务器侧的流状态是否为正在直播,若源服务器侧的流状态不为正在直播,则指示源服务器向第三方服务器拉取直播视频的视频流。若源服务器成功从第三方拉取直播视频的视频流,接收源服务器返回的流状态,将直播视频流的回源路径发送给CDN服务器,以使得CDN服务器将回源路径发送给客户端。与现有技术相比,本发明能够在接收到CDN服务器转发的用户请求时,才会 去拉流,没有接收到用户请求,则不拉流,避免无效拉流浪费服务器资源。本发明能够指示源服务器向第三方服务器拉取直播视频流,将第三方服务器的直播视频流拉取到源服务器中,观看方可以观看推送到第三方服务器的直播视频。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1示出了本发明实施例提供了一种拉流控制的方法流程图;
图2示出了本发明实施例提供了另一种拉流控制的方法流程图;
图3示出了本发明实施例提供了一种拉流控制的装置组成框图;
图4示出了本发明实施例提供了另一种拉流控制的装置组成图;
图5示出了本发明实施例提供了一种拉流控制的系统框图;
图6示出了本发明实施例提供了一种拉流控制的装置结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
为了解决观看方无法观看推送到第三方服务器的直播视频的问题,本发明实施例提供了一种拉流控制的方法,如图1所示,该方法包括:
101、接收内容分发网络CDN服务器转发的用户请求,用户请求用于请求观看直播视频。
CDN(Content Delivery Network,内容分发网络),是构建在数据网络上的一种分布式的内容分发网。CDN的作用是采用流媒体服务器集群技 术,克服单机系统输出带宽及并发能力不足的缺点,可极大提升系统支持的并发流数目,减少或避免单点失效带来的不良影响。
CDN利用全局负载均衡技术将用户的访问指向离用户最近的工作正常的流媒体服务器上,由流媒体服务器直接响应用户的请求。服务器中如果没有用户要访问的内容,会根据配置自动从源服务器抓取相应的内容并提供给用户。
用户请求,是客户端发出的,包括请求观看直播视频的信息。客户端发出用户请求,离用户最近的工作正常的CDN服务器,接收用户请求并转发给控制中心。
102、检测直播视频在源服务器侧的流状态是否为正在直播,流状态为用户请求的直播视频的流状态。
流媒体是边传边播的媒体形式。流状态,是指用户请求的直播视频的流状态。检测直播视频在源服务器侧的流状态是否为正在直播,即检测用户请求的直播视频的流状态是否正在直播。若正在直播,则可以以流媒体的媒体形式播放。
源服务器,提供流媒体文件。流媒体的提供方将流媒体文件推流到源服务器且推流未完成,源服务器侧中对应的流媒体文件为正在直播。检测流状态,是在源服务器侧。
103、若源服务器侧的流状态不为正在直播,则指示源服务器向第三方服务器拉取直播视频的视频流。
若源服务器侧的流状态不为正在直播,则发出源服务器向第三方服务器拉取直播视频的视频流的指示。源服务器接收到拉流指示时,在第三方服务器中查找用户请求的视频流,若查找到用户请求的视频流,则将视频流拉取到源服务器中。
104、接收源服务器返回的流状态,源服务器返回的流状态为正在直播。
若源服务器拉取到用户请求的视频流,则该视频流的流状态为正在直播,源服务器将该视频流的流状态发送给控制中心。若源服务器未拉取到用户请求的视频流,则该视频的流状态为发生改变,源服务器不重新发送该视频流的流状态。控制中心接收源服务器返回的流状态。源服务器中的 流状态为正在直播,说明源服务器中存在该视频的视频流。
105、将视频流的回源路径发送给CDN服务器,以使得CDN服务器将回源路径发送给客户端。
若视频流的流状态为正在直播,则将视频流的回源路径发送给CDN服务器,CDN服务器将回源路径发送给客户端,这样客户端才能实现直播视频的边传边播。
本发明实施例提供的一种拉流控制的方法,能够通过接收CDN服务器转发的用户请求,检查请求观看的直播视频在源服务器册的流状态是否为正在直播,若源服务器侧的流状态不为正在直播,则指示源服务器向第三方服务器拉取直播视频的视频流。若源服务器成功从第三方拉取直播视频的视频流,接收源服务器返回的流状态,将直播视频流的回源路径发送给CDN服务器,以使得CDN服务器将回源路径发送给客户端。与现有技术相比,本发明实施例能够在接收到CDN服务器转发的用户请求时,才会去拉流,没有接收到用户请求,则不拉流,避免无效拉流浪费服务器资源。本发明能够指示原服务器向第三方服务器拉取直播视频流,将第三方服务器的直播视频流拉取到源服务器中,观看方可以观看推送到第三方服务器的直播视频。
进一步地,作为图1的细化和扩展,本发明实施例提供了另一种拉流控制的方法,如图2所示,该方法包括:
201、接收内容分发网络CDN服务器转发的用户请求,用户请求用于请求观看直播视频。
接收的用户请求,包括请求发出的时间信息、用户信息、直播视频信息和对直播视频的播放请求。接收的用户请求是由CDN服务器转发的。CDN服务器不为客户端提供直播视频的视频流。
202、对发出用户请求的客户端进行鉴权,以鉴别客户端是否具有播放直播视频的权限。
用户请求中包含用户账号信息,不同的账号拥有不同的权限。权限不同,可以观看的视频资源也不相同。对发出用户请求的客户端进行鉴权,即鉴别客户端是否具有播放视频的权限。若客户端不具备观看客户端发出用户请求视频的权限,则给客户端返回一个无观看权限的信息。若客户端 具备观看客户端发出用户请求视频的权限,再进行下一步检测。
203、检测直播视频在源服务器侧的流状态是否为正在直播,流状态为用户请求的直播视频的流状态。
源服务器中,存放流媒体提供方推流的视频,并将流媒体提供方提供的视频流正在直播的信息,发送给控制中心。若在控制中心中检测直播视频的流状态,即为直播视频在源服务器侧的流状态。
204a、若源服务器侧的流状态为正在直播,则从源服务器中直接拉取直播视频的视频流。
若检测源服务器侧的流状态为正在直播,源服务器中存放直播视频的视频流,则从源服务器中直接拉取直播视频的视频流,即可完成对视频流的拉流。
204b、若源服务器侧的流状态不为正在直播,则指示源服务器向第三方服务器拉取直播视频的视频流。
用户请求的直播视频是有流地址的,源服务器通过流地址,直接从第三方服务器拉取直播视频的视频流。
指示源服务器向第三方服务器拉取直播视频的视频流,需要限制源服务器向第三方服务器拉取视频流的频率。让源服务器的拉流操作有固定的时间间隔,这样的设置,一方面通过一次拉流满足用户请求时间相近的相同直播视频的请求,节省服务器资源;另一方面若用户请求过于频繁,是一种对服务器的恶意攻击,通过限制拉流频率,减少拉流次数,可以防止通过频繁用户请求对服务器的恶意攻击。
205b、接收源服务器返回的流状态,源服务器返回的流状态为正在直播。
在源服务器拉取直播视频流后,更改该直播视频的流状态。接收该直播视频的流状态,该直播视频的流状态由源服务器返回。
206b、将视频流的回源路径发送给CDN服务器,以使得CDN服务器将回源路径发送给客户端。
若视频流的流状态为正在直播,则将视频流的回源路径发送给CDN服务器,CDN服务器将回源路径发送给客户端,这样客户端才能实现直播视频的边传边播。
进一步地,作为图1和图2所示方法的实现,本发明另一实施例还提供了一种拉流控制的装置。本装置实施例与前述方法实施例对应,能够实现前述方法实施例中的全部内容。为便于阅读,本装置实施例仅对前述方法实施例中的内容进行概要性描述,不对方法实施例中的细节内容进行逐一赘述。如图3所示,该装置包括:第一接收单元31、检测单元32、指示单元33、第二接收单元34以及发送单元35。其中,
第一接收单元31,用于接收内容分发网络CDN服务器转发的用户请求,用户请求用于请求观看直播视频;
检测单元32,用于检测第一接收单元31接收到的用户请求的直播视频在源服务器侧的流状态是否为正在直播,流状态为用户请求的直播视频的流状态;
指示单元33,用于若检测单元32检测到的源服务器侧的流状态不为正在直播,则指示源服务器向第三方服务器拉取直播视频的视频流;
第二接收单元34,用于接收源服务器返回的流状态,源服务器返回的流状态为正在直播;
发送单元35,用于若第二接收单元34接收的流状态为正在直播,则将视频流的回源路径发送给CDN服务器,以使得CDN服务器将回源路径发送给客户端。
进一步地,如图4所示,该装置进一步包括:
鉴权单元36,用于对发出第一接收单元31接收到的用户请求的客户端进行鉴权,以鉴别客户端是否具有播放直播视频的权限。
进一步地,如图4所示,该装置进一步包括:
拉取单元37,用于在检测单元32检测源服务器侧的流状态是否为正在直播之后,若源服务器侧的流状态为正在直播,则从源服务器中直接拉取直播视频的视频流。
进一步地,指示单元33,包括:
限制模块331,用于限制源服务器向第三方服务器拉取视频流的频率。
进一步地,作为图1和图2所示方法的实现,本发明实施例还提供了一种拉流控制的系统。本系统实施例与前述方法实施例对应,能够实现前述方法实施例中的全部内容。为便于阅读,本系统实施例仅对前述方法 实施例中的内容进行概要性描述,不对方法实施例中的细节内容进行逐一赘述。如图5所示,该系统包括:客户端51、内容分发网络CDN服务器52、控制中心53和源服务器54。具体的:
客户端51,用于发送用户请求;
CDN服务器52,用于转发客户端51发送的用户请求,接收回源路径,并将回源路径发送给客户端;
控制中心53,用于检测CDN服务器52发送的用户请求的直播视频在源服务器侧的流状态是否为正在直播,若不为正在直播,则指示源服务器向第三方服务器拉取用户请求的直播视频的视频流,接收源服务器返回的流状态,将视频流的回源路径发送给CDN服务器52;
源服务器54,用于向第三方服务器拉取直播视频的视频流,将直播视频的流状态发送给控制中心53。
本发明实施例提供的一种拉流控制的装置及系统,能够通过接收CDN服务器转发的用户请求,检查请求观看的直播视频在源服务器册的流状态是否为正在直播,若源服务器侧的流状态不为正在直播,则指示源服务器向第三方服务器拉取直播视频的视频流。若源服务器成功从第三方拉取直播视频的视频流,接收源服务器返回的流状态,将直播视频流的回源路径发送给CDN服务器,以使得CDN服务器将回源路径发送给客户端。与现有技术相比,本发明实施例能够在接收到CDN服务器转发的用户请求时,才会去拉流,没有接收到用户请求,则不拉流,避免无效拉流浪费服务器资源。本发明能够指示原服务器向第三方服务器拉取直播视频流,将第三方服务器的直播视频流拉取到源服务器中,观看方可以观看推送到第三方服务器的直播视频。
需要说明的是,针对上述拉流控制的装置,凡是本发明实施例中使用到的各个单元模块的功能都可以通过硬件处理器(hardware processor)来实现。
示例性的,如图6所示,图6示出了本发明实施例提供的一种拉流控制的装置结构示意图,该拉流控制的装置可以包括:处理器(processor)61、通信接口(Communications Interface)62、存储器(memory)63和总线64,其中,处理器61、通信接口62、存储器63通过总线64完成 相互间的通信。通信接口62可以用于服务器与客户端之间的信息传输。处理器61可以调用存储器63中的逻辑指令,以执行如下方法:接收内容分发网络CDN服务器转发的用户请求,所述用户请求用于请求观看直播视频;检测所述直播视频在源服务器侧的流状态是否为正在直播,所述流状态为所述用户请求的直播视频的流状态;若源服务器侧的流状态不为正在直播,则指示所述源服务器向第三方服务器拉取所述直播视频的视频流;接收所述源服务器返回的流状态,所述源服务器返回的流状态为正在直播;将所述视频流的回源路径发送给所述CDN服务器,以使得所述CDN服务器将所述回源路径发送给客户端。
此外,上述的存储器63中的逻辑指令可以通过软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所描述的装置实施例仅仅是示意性的,其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性的劳动的情况下,即可以理解并实施。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到各实施方式可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件。基于这样的理解,上述技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品可以存储在计算机可读存储介质中,如ROM/RAM、磁碟、光盘等,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等) 执行各个实施例或者实施例的某些部分所述的方法。
最后应说明的是:以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对5前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (10)

  1. 一种拉流控制的方法,其特征在于,所述方法包括:
    接收内容分发网络CDN服务器转发的用户请求,所述用户请求用于请求观看直播视频;
    检测所述直播视频在源服务器侧的流状态是否为正在直播,所述流状态为所述用户请求的直播视频的流状态;
    若源服务器侧的流状态不为正在直播,则指示所述源服务器向第三方服务器拉取所述直播视频的视频流;
    接收所述源服务器返回的流状态,所述源服务器返回的流状态为正在直播;
    将所述视频流的回源路径发送给所述CDN服务器,以使得所述CDN服务器将所述回源路径发送给客户端。
  2. 根据权利要求1所述的方法,其特征在于,所述方法进一步包括:
    对发出所述用户请求的客户端进行鉴权,以鉴别所述客户端是否具有播放所述直播视频的权限。
  3. 根据权利要求1所述的方法,其特征在于,在所述检测源服务器侧的流状态是否为正在直播之后,所述方法进一步包括:
    若源服务器侧的流状态为正在直播,则从源服务器中直接拉取所述直播视频的视频流。
  4. 根据权利要求1所述的方法,其特征在于,所述指示所述源服务器向第三方服务器拉取所述直播视频的视频流,包括:
    限制所述源服务器向所述第三方服务器拉取所述视频流的频率。
  5. 一种拉流控制的装置,其特征在于,所述装置包括:
    第一接收单元,用于接收内容分发网络CDN服务器转发的用户请求,所述用户请求用于请求观看直播视频;
    检测单元,用于检测所述第一接收单元接收到的用户请求的直播视频在源服务器侧的流状态是否为正在直播,所述流状态为所述用户请求的直播视频的流状态;
    指示单元,用于若所述检测单元检测到的源服务器侧的流状态不为正 在直播,则指示所述源服务器向第三方服务器拉取所述直播视频的视频流;
    第二接收单元,用于接收所述源服务器返回的流状态,所述源服务器返回的流状态为正在直播;
    发送单元,用于若所述所述第二接收单元接收的流状态为正在直播,则将视频流的回源路径发送给所述CDN服务器,以使得所述CDN服务器将所述回源路径发送给客户端。
  6. 根据权利要求5所述的装置,其特征在于,所述装置进一步包括:
    鉴权单元,用于对发出所述第一接收单元接收到的用户请求的客户端进行鉴权,以鉴别所述客户端是否具有播放所述直播视频的权限。
  7. 根据权利要求5所述的装置,其特征在于,所述装置进一步包括:
    拉取单元,用于在所述检测单元检测源服务器侧的流状态是否为正在直播之后,若源服务器侧的流状态为正在直播,则从源服务器中直接拉取所述直播视频的视频流。
  8. 根据权利要求5所述的装置,其特征在于,所述指示单元,包括:
    限制模块,用于限制所述源服务器向所述第三方服务器拉取所述视频流的频率。
  9. 一种拉流控制的装置,其特征在于,所述装置包括:
    一个或多个处理器;和
    存储器;
    其中所述存储器中存储有指令,经配置所述指令由所述一个或多个处理器执行,所述一个或多个处理器通过执行所述指令能进行如下操作:
    接收内容分发网络CDN服务器转发的用户请求,所述用户请求用于请求观看直播视频;
    检测接收到的用户请求的直播视频在源服务器侧的流状态是否为正在直播,所述流状态为所述用户请求的直播视频的流状态;
    若检测到的源服务器侧的流状态不为正在直播,则指示所述源服务器向第三方服务器拉取所述直播视频的视频流;
    接收所述源服务器返回的流状态,所述源服务器返回的流状态为正在直播;
    若接收的流状态为正在直播,则将视频流的回源路径发送给所述CDN服务器,以使得所述CDN服务器将所述回源路径发送给客户端。
  10. 一种拉流控制的系统,其特征在于,所述系统包括:客户端、内容分发网络CDN服务器、控制中心和源服务器;
    所述客户端,用于发送用户请求;
    所述CDN服务器,用于转发客户端发送的用户请求,接收回源路径,并将回源路径发送给客户端;
    所述控制中心,用于检测源服务器侧的流状态是否为正在直播,若不为正在直播,则指示所述源服务器向第三方服务器拉取所述用户请求的直播视频的视频流,接收所述源服务器返回的流状态,将所述视频流的回源路径发送给所述CDN服务器;
    所述源服务器,用于向第三方服务器拉取所述直播视频的视频流,将所述直播视频的流状态发送给控制中心。
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