CN117768663B - Multi-protocol cascade gateway - Google Patents
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Abstract
The application discloses a multi-protocol cascade gateway, and relates to the technical field of video networking. The gateway comprises a device management module and a signaling service module; the signaling service module receives and analyzes the retrieval task signaling transmitted by the upper stage platform, transmits the retrieval task signaling to the lower stage platform, receives a plurality of pieces of directory equipment information transmitted by the lower stage platform, generates an independent directory equipment version number for each piece of directory equipment information according to the identification of the lower stage platform, and generates retrieval information and transmits the retrieval information to the upper stage platform; the retrieval information comprises directory device information, directory total number and directory device version number; the device management module is used for calculating a device deletion list, transmitting the device deletion list to the upper platform, receiving a deletion confirmation signaling and executing the device deletion. The consistency and the correctness of the data processing result are realized through the version number of the directory equipment, and the reliability and the maintainability of the system are improved; and the integrity and safety of the deleting process of the equipment are ensured through a bidirectional confirmation mechanism.
Description
Technical Field
The invention relates to the technical field of video networking, in particular to a multi-protocol cascade gateway.
Background
The video networking is a comprehensive video service platform realized based on the Internet technology, integrates various media resources such as audio, video, images, data and the like, and provides high-definition, easy-to-use and reliable video and audio conference, real-time video control, intelligent monitoring analysis, emergency command and other services for users. Meanwhile, the video networking has the lateral and longitudinal expansion capability, supports the application of multi-point access, cross-regional management, multimedia fusion and the like, and can provide wide service application scenes for wide users. The current national standard of public safety video monitoring networking system information transmission, exchange and control technical requirements prescribes the interconnection structure, the basic transmission, exchange and control requirements and the safety requirements of the video networking.
In the existing video networking system, due to the fact that a synchronous data link is long, the problem of inconsistent data usually occurs between an upper-level platform and a lower-level platform in the process of synchronizing directory equipment, and accuracy of signal transmission, equipment management and video monitoring can be directly affected. In addition, the access efficiency of the lower-level platform in the existing video networking system is low, and quick configuration and management cannot be realized.
Disclosure of Invention
In order to solve the problems existing in the prior art, the invention adopts the following technical scheme:
A multi-protocol cascade gateway comprises a device management module and a signaling service module; the signaling service module is respectively connected with the upper stage platform and the lower stage platform in a communication way;
The signaling service module receives and analyzes the retrieval task signaling transmitted by the upper stage platform, transmits the retrieval task signaling to the lower stage platform, receives a plurality of pieces of directory equipment information transmitted by the lower stage platform, generates an independent directory equipment version number for each piece of directory equipment information according to the identification of the lower stage platform, and generates retrieval information and transmits the retrieval information to the upper stage platform; the search information comprises directory equipment information, directory total number and directory equipment version number;
The device management module is used for calculating a device deletion list according to the catalog device information, transmitting the device deletion list to the upper platform through the signaling service module, receiving a deletion confirmation signaling transmitted by the upper platform through the signaling service module and executing a deletion device;
the generation rule of the directory device version number is as follows:
S11, setting an incremental directory device version number for each device in a lower-level platform, and taking the version number of each directory device and the identification of the lower-level platform as a joint unique index of retrieval information; step S12 is entered when the device is newly added or updated each time;
S12, automatically increasing the largest directory device version number in a lower platform corresponding to the newly-increased or updated device by 1 to serve as the directory device version number of the newly-increased or updated device, and updating the joint unique index at the same time;
and S13, if the joint unique index is detected to be repeated, repeating the step S12.
The device management module is also used for transmitting the deletion completion response to the upper platform through the signaling service module after the deletion device is executed, and the upper platform executes the logic deletion device after receiving the deletion completion response.
As a preferable scheme of the application, the search information further comprises a message number; the message numbering upper signaling service module is generated before transmitting the retrieval information to an upper platform and is integrated into the retrieval information; and a Qos1 message transmission mechanism is adopted between the multi-protocol cascade gateway and the upper-level platform as well as between the multi-protocol cascade gateway and the lower-level platform.
The multi-protocol cascade gateway also comprises a queue management module, wherein the queue management module judges whether an unfinished task exists in a queue when the signaling service module receives the retrieval task signaling; if the unfinished task exists, returning a creation failure response to the upper-level platform through the signaling service module; and if the unfinished task does not exist, returning a successful creation response to the upper-level platform through the signaling service module.
The application also comprises a stream media module which is in communication connection with the upper stage platform and the lower stage platform and is used for audio and video decoding and stream media protocol conversion.
As a preferred scheme of the application, the application also comprises a configuration module; the configuration module is connected with the configuration management platform.
As a preferred scheme of the application, the configuration module comprises a public network access cluster and an intranet access cluster; the public network access cluster is used for processing the public network access flow, and the processing of the public network access flow comprises providing TCP and UDP flow receiving services to the outside and reading the configuration of the outside public network; the intranet access cluster is used for processing intranet access flow, and processing intranet access flow comprises providing TCP and UDP flow receiving services to the outside and reading external intranet configuration.
As a preferred scheme of the application, the configuration module comprises a TCP active public network management domain, a TCP passive public network management domain, a UDP public network management domain, a TCP active intranet management domain, a TCP passive intranet management domain and a UDP intranet management domain.
As a preferred scheme of the present application, the configuration module further includes a port management module, where the port management module is configured to manage an open port of the gateway, and is used for different flow receiving and sending functions.
As a preferred scheme of the application, the ports comprise an MDU public network TCP passive stream-receiving shared pool exposure port, an MDU public network RTSP stream-sending shared pool exposure port, an MDU public network HLS stream-sending shared pool exposure port, an MDU public network RTMP stream-sending shared pool exposure port, an MDU public network ES stream-sending shared pool exposure port, an MDU public network TCP active pull stream private Chi Xinzeng exposure port, an MDU public network UDP stream-receiving private Chi Xinzeng exposure port, an MDU private network TCP passive stream-receiving private Chi Xinzeng exposure port, an MDU private network TCP active pull stream private Chi Xinzeng exposure port and an MDU private network UDP stream-receiving private Chi Xinzeng exposure port.
Compared with the prior art, the invention has the following beneficial effects:
The consistency and the correctness of the data processing result are realized through the version number of the directory equipment, and the reliability and the maintainability of the system are improved; the integrity and safety of the deleting process of the equipment are ensured through a bidirectional confirmation mechanism of the upper platform and the multi-protocol cascade gateway.
By setting the message number in the search information, the application realizes reliable message transmission, the de-duplication processing of the search information, a message retry mechanism and a mechanism for avoiding repeated reporting, and improves the accuracy and consistency of data transmission.
The application realizes the centralized management and control of network configuration and system scheduling through the connection configuration management platform so as to support the self-service assembly and maintenance access of each province and maintenance personnel, and can improve the configuration efficiency and management flexibility of resources. And the support of the management domains can realize the fine and comprehensive management and scheduling of the media stream resources in different management domains.
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In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a multi-protocol tandem gateway according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Referring to fig. 1, a multi-protocol tandem gateway includes a device management module and a signaling service module. The signaling service module is respectively in communication connection with the upper stage platform and the lower stage platform.
The lower platform is connected with monitoring resources through an SIP protocol and an RTP protocol, wherein the monitoring resources comprise national standard cameras and NVR equipment; the upper stage platform invokes the monitoring resources connected with the lower stage platform through the multi-protocol cascade gateway, and provides the monitoring resources for the application terminal through the API interface according to the service scene requirement.
The signaling service module receives and analyzes the retrieval task signaling transmitted by the upper stage platform, transmits the retrieval task signaling to the lower stage platform, receives a plurality of pieces of directory equipment information transmitted by the lower stage platform, generates an independent directory equipment version number for each piece of directory equipment information according to the identification of the lower stage platform, and generates retrieval information and transmits the retrieval information to the upper stage platform; the retrieval information includes directory device information, a total number of directories, and a directory device version number.
The total number of the catalogues is the number of the catalogue equipment information acquired by the lower platform according to the retrieval task instruction. The multi-protocol cascade gateway provides the total number of catalogues for the upper platform, and the upper platform can monitor the task progress corresponding to each retrieval task signaling.
Further, a directory device version number is used to identify a different version of each directory device information. In the distributed system, if the message sequence is required to be completely ensured, the cost is huge, and the consistency of the result is ensured under the condition that the data transmission is disordered through the version number of the directory equipment. Further, the generation rule of the directory device version number is as follows:
S11, setting an incremental directory device version number for each device in a lower-level platform, and taking the version number of each directory device and the identification of the lower-level platform as a joint unique index of retrieval information; step S12 is entered when the device is newly added or updated each time;
S12, automatically increasing the largest directory device version number in a lower platform corresponding to the newly-increased or updated device by 1 to serve as the directory device version number of the newly-increased or updated device, and updating the joint unique index at the same time; it should be noted that the directory device version number need not be processed when deleting the device.
And S13, if the joint unique index is detected to be repeated, repeating the step S12.
Based on the foregoing, the application designs a platform-level device version number to ensure consistency and correctness of data processing results between multiple platforms and systems.
For example, the multi-protocol cascade gateway transmits three pieces of search information to the upper platform in the following transmission order: newly added equipment A, wherein the version number of the directory equipment is n; deleting the device A, wherein the directory device version number is n; newly added equipment A, wherein the version number of the directory equipment is n+k; wherein k is a positive integer.
When data transmission is disordered, the sequence of the retrieval information received by the upper-level platform is as follows: newly added equipment A, wherein the version number of the directory equipment is n; newly added equipment A, wherein the version number of the directory equipment is n+k; and deleting the device A, wherein the directory device version number is n.
According to the directory device version number, the upper platform updates the directory device version number of the device A to n+k according to the directory device version number n < n+k, and processes the last piece of search information, namely deletes the device A, so that the consistency and the correctness of a data processing result are ensured through the directory device version number, and the reliability and the maintainability of a system are improved.
The device management module is used for calculating a device deletion list according to the catalog device information, transmitting the device deletion list to the upper platform through the signaling service module, receiving a deletion confirmation signaling transmitted by the upper platform through the signaling service module, and executing the device deletion. In the application, the multi-protocol cascade gateway performs information interaction with the upper stage platform and the lower stage platform in a mode of reporting the full message, and the device management module calculates a device deletion list according to the catalog device information to realize deletion logic processing with the upper stage platform.
As a preferred embodiment, the device management module is further configured to transmit a deletion completion response to the upper platform through the signaling service module after the deletion device is executed, and the upper platform executes the logical deletion device after receiving the deletion completion response.
Based on the foregoing, the complete process of deleting the device implemented by the device management module and the upper platform in this embodiment is as follows:
S21, the device management module calculates a device deletion list according to the catalog device information and transmits the list to the upper platform through the signaling service module;
S22, marking the equipment to be deleted according to the equipment deletion list by the upper platform, and returning a deletion confirmation signaling to the equipment management module after receiving the deletion confirmation information of the application terminal;
s23, the equipment management module executes the equipment deletion after receiving the deletion confirmation signaling, and transmits a deletion completion response to the upper-level platform;
S24, the upper stage platform executes the logic deleting device after receiving the deleting completion response.
In this embodiment, through the bidirectional acknowledgement mechanism of the upper platform and the multi-protocol cascade gateway, the device management module performs the deletion of the device only after receiving the deletion acknowledgement signaling, and the upper platform performs the logical deletion of the device only after receiving the deletion completion response, so as to ensure the integrity and security of the deletion process.
As a preferred embodiment, the search information further includes a message number. The message numbering upper signaling service module is generated before the retrieval information is transmitted to the upper platform and is integrated into the retrieval information. In this embodiment, a Qos1 message transmission mechanism is adopted between the multi-protocol cascade gateway and the upper stage platform and the lower stage platform, that is, it is required to ensure that the message reaches at least 1 time, when the multi-protocol cascade gateway transmits the search information, an incremental message number of the search information dimension is generated, the upper stage performs deduplication processing on the search information according to the message number, and the lower stage performs retry when the transmission of the search information corresponding to the message number fails, so as to ensure the must reach of the message. The upper platform allows the retransmission of the same piece of retrieval information under the factors of a network and the like, but does not accept repeated reporting of the same equipment of the multi-protocol cascade gateway through different batches/different interfaces.
By setting the message number in the search information, the embodiment realizes reliable message transmission, the deduplication processing of the search information, a message retry mechanism and a mechanism for avoiding repeated reporting, and improves the accuracy and reliability consistency of data.
As a preferred embodiment, the multi-protocol tandem gateway further includes a queue management module. The queue management module judges whether an unfinished task exists in the queue or not when the signaling service module receives the retrieval task signaling; if the unfinished task exists, returning a creation failure response to the upper-level platform through the signaling service module; and if the unfinished task does not exist, returning a successful creation response to the upper-level platform through the signaling service module. According to the embodiment, the queue management module is used for managing the task queues in the multi-protocol gateway, so that the order of tasks and the accuracy of execution are ensured. When the task is successfully created, the upper platform can timely obtain a response and prepare to receive the return of the task result; when the task creation fails, the multi-protocol cascade gateway can also timely feed back the creation failure response, so that the interaction efficiency of the upper-level platform and the multi-protocol cascade gateway is improved.
As an optimal embodiment, the multi-protocol cascade gateway of the application further comprises a streaming media module, wherein the streaming media module supports RTP, RTMP, RTSP and other protocols, is in communication connection with the upper-level platform and the lower-level platform, and is used for audio and video decoding and streaming media protocol conversion so as to realize audio and video data transmission between the upper-level platform and the lower-level platform.
As a preferred embodiment, the multi-protocol cascade gateway of the present application further comprises a configuration module; the configuration module is connected with the configuration management platform. In one embodiment, the configuration management platform is Nacos. The configuration module comprises a public network access cluster and an intranet access cluster; the public network access cluster is used for processing the public network access traffic, and the processing of the public network access traffic comprises providing TCP and UDP flow receiving services to the outside and reading the configuration of the outside public network. The intranet access cluster is used for processing intranet access traffic, and the processing of the intranet access traffic comprises providing TCP and UDP stream receiving services to the outside and reading of the configuration of the outside intranet.
Further, the configuration module includes a plurality of management domains, and each management domain corresponds to a stream receiving mode and is used for processing stream receiving and transmitting operations. The management domain specifically comprises a TCP active public network, a TCP passive public network, a UDP public network, a TCP active intranet, a TCP passive intranet and a UDP intranet management domain.
The application realizes the centralized management and control of network configuration and system scheduling through the connection configuration management platform so as to support the self-service assembly and maintenance access of each province and maintenance personnel, and can improve the configuration efficiency and management flexibility of resources. And the support of the management domains can realize the fine and comprehensive management and scheduling of the media stream resources in different management domains. The scheme of the application is widely applicable to service management and micro-service architecture of an enterprise internal system, and can provide reliable and efficient media transmission service and management mode for enterprises.
As a preferred embodiment, the configuration module further includes a port management module, where the port management module is configured to manage an open port of the gateway, and is configured to use different receive and transmit functions. The ports respectively correspond to different flow receiving modes and protocol types, and in one embodiment, the specific ports include:
The method comprises the steps of exposing a port of a MDU public network TCP passive stream receiving shared pool, exposing a port of an MDU public network RTSP stream sending shared pool, exposing a port of an MDU public network HLS stream sending shared pool, exposing a port of an MDU public network RTMP stream sending shared pool, exposing a port of an MDU public network ES stream sending shared pool, exposing a port of an MDU public network TCP active pull stream share Chi Xinzeng, exposing a port of an MDU public network UDP stream receiving shared Chi Xinzeng, exposing a port of an MDU private network TCP passive stream receiving shared Chi Xinzeng, exposing a port of an MDU private network TCP active pull stream shared Chi Xinzeng, exposing a port of an MDU private network UDP stream receiving shared Chi Xinzeng.
The port management module can realize different flow receiving and sending functions through the specific open port, and realize accurate control and management of the media flow through managing different exclusive ports, thereby meeting different media transmission requirements and enhancing the expandability of the system.
In the several embodiments provided by the present application, it should be understood that the disclosed model may be implemented in other ways. For example, the above-described embodiments of the units are merely illustrative, e.g., the division of the units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another unit, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection of modules, electrical, mechanical, or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, i.e. may be located in one place, or may be distributed over a plurality of units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module. The integrated modules may be implemented in hardware or in software functional modules.
The integrated modules, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random-access memory (RAM, random access memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Claims (4)
1. A multi-protocol tandem gateway, characterized by: the system comprises an equipment management module and a signaling service module; the signaling service module is respectively connected with the upper stage platform and the lower stage platform in a communication way;
The signaling service module receives and analyzes the retrieval task signaling transmitted by the upper stage platform, transmits the retrieval task signaling to the lower stage platform, receives a plurality of pieces of directory equipment information transmitted by the lower stage platform, generates an independent directory equipment version number for each piece of directory equipment information according to the identification of the lower stage platform, and generates retrieval information and transmits the retrieval information to the upper stage platform; the search information comprises directory equipment information, directory total number and directory equipment version number;
The device management module is used for calculating a device deletion list according to the catalog device information, transmitting the device deletion list to the upper platform through the signaling service module, receiving a deletion confirmation signaling transmitted by the upper platform through the signaling service module and executing a deletion device;
the generation rule of the directory device version number is as follows:
S11, setting an incremental directory device version number for each device in a lower-level platform, and taking the version number of each directory device and the identification of the lower-level platform as a joint unique index of retrieval information; step S12 is entered when the device is newly added or updated each time;
S12, automatically increasing the largest directory device version number in a lower platform corresponding to the newly-increased or updated device by 1 to serve as the directory device version number of the newly-increased or updated device, and updating the joint unique index at the same time;
S13, if the joint unique index is detected to be repeated, repeating the step S12;
The device management module is also used for transmitting a deletion completion response to the upper stage platform through the signaling service module after the deletion device is executed, and the upper stage platform executes the logic deletion device after receiving the deletion completion response;
The search information also comprises a message number; the message numbering upper signaling service module is generated before transmitting the retrieval information to an upper platform and is integrated into the retrieval information; a Qos1 message transmission mechanism is adopted between the multi-protocol cascade gateway and the upper-level platform as well as between the multi-protocol cascade gateway and the lower-level platform;
the multi-protocol cascade gateway also comprises a queue management module, wherein the queue management module judges whether an unfinished task exists in a queue when the signaling service module receives the retrieval task signaling; if the unfinished task exists, returning a creation failure response to the upper-level platform through the signaling service module; if the unfinished task does not exist, returning a successful creation response to the upper-level platform through the signaling service module;
the multi-protocol cascade gateway also comprises a configuration module; the configuration module is connected with a configuration management platform;
The configuration module comprises a public network access cluster and an intranet access cluster; the public network access cluster is used for processing the public network access flow, and the processing of the public network access flow comprises providing TCP and UDP flow receiving services to the outside and reading the configuration of the outside public network; the intranet access cluster is used for processing intranet access flow, and the processing of the intranet access flow comprises providing TCP and UDP flow receiving services to the outside and reading the configuration of the outside intranet;
The configuration module comprises a TCP active public network management domain, a TCP passive public network management domain, a UDP public network management domain, a TCP active intranet management domain, a TCP passive intranet management domain and a UDP intranet management domain.
2. The multi-protocol tandem gateway according to claim 1, wherein: the system also comprises a streaming media module which is in communication connection with the upper stage platform and the lower stage platform and is used for audio and video decoding and streaming media protocol conversion.
3. The multi-protocol tandem gateway according to claim 1, wherein: the configuration module also comprises a port management module, wherein the port management module is used for managing the open port of the gateway and is used for different flow receiving and sending functions.
4. A multi-protocol tandem gateway according to claim 3, wherein: the ports comprise an MDU public network TCP passive stream receiving shared pool exposing port, an MDU public network RTSP stream sending shared pool exposing port, an MDU public network HLS stream sending shared pool exposing port, an MDU public network RTMP stream sending shared pool exposing port, an MDU public network ES stream sending shared pool exposing port, an MDU public network TCP active pull stream private Chi Xinzeng exposing port, an MDU public network UDP stream receiving shared Chi Xinzeng exposing port, an MDU private network TCP passive stream receiving shared Chi Xinzeng exposing port, an MDU private network TCP active pull stream private Chi Xinzeng exposing port and an MDU private network UDP stream receiving shared Chi Xinzeng exposing port.
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| 中波同步广播单频覆盖干扰分析与解决方案;特木日朝日格;;西部广播电视;20171205(第23期);全文 * |
| 林凯；白杰；王睿智；谢石木林；方爽；王丹；吴庆；.基于O-RAN架构的电力5G一体化基站设计与应用.供用电.全文. * |
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