CN113542289A - Method and system for automatically analyzing GB/T28181 protocol - Google Patents
Method and system for automatically analyzing GB/T28181 protocol Download PDFInfo
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- 238000004891 communication Methods 0.000 claims abstract description 29
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- 238000013481 data capture Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1104—Session initiation protocol [SIP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
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Abstract
The invention relates to the technical field of monitoring, and particularly discloses a method for automatically analyzing a GB/T28181 protocol, which comprises the steps of obtaining a network communication data packet between GB/T28181 equipment and a GB/T28181 server; filtering the network communication data packet to obtain an SIP session signaling control data packet and an RTP media transmission data packet; analyzing the SIP session signaling control data packet and the RTP media transmission data packet to obtain an analysis result; and outputting and displaying the analysis result. The invention also discloses a system for automatically analyzing the GB/T28181 protocol. The method for automatically analyzing the GB/T28181 protocol can realize the automatic analysis of the GB/T28181 protocol, and automatically stores all network data packets in the GB/T28181 communication process, thereby being beneficial to error elimination and tracing.
Description
Technical Field
The invention relates to the technical field of monitoring, in particular to a method for automatically analyzing a GB/T28181 protocol and a system for automatically analyzing the GB/T28181 protocol.
Background
At present, in a monitoring product which uses a GB/T28181 protocol as a video transmission and audio talkback transmission protocol, the content of the GB/T28181 protocol is more, so the debugging is more complicated, and the conventional packet capturing software such as wireshark and the like cannot support the automatic analysis of the GB/T28181 protocol.
Existing network packet capturing software (such as wireshark) in the market at present does not support automatic analysis and identification of a GB/T28181 protocol, so that specific meanings of each packet of network data in a GB/T28181 communication process cannot be visually displayed in a GB/T28181 related product development process, and the specific meanings need to be compared one by one according to GB/T28181 protocol specifications; moreover, network data packets in the GB/T28181 communication process are passed through at a short time, and are not beneficial to error elimination and tracing.
Disclosure of Invention
The invention provides a method and a system for automatically analyzing a GB/T28181 protocol, which solve the problems that the content of the GB/T28181 protocol is more, the debugging is more complicated, and the existing packet capturing software such as wireshark and the like cannot support the automatic analysis of the GB/T28181 protocol in the related technology.
As a first aspect of the present invention, there is provided a method for automatically parsing a GB/T28181 protocol, including:
s110, acquiring a network communication data packet between GB/T28181 equipment and a GB/T28181 server;
s120, filtering the network communication data packet to obtain an SIP session signaling control data packet and an RTP media transmission data packet;
s130, analyzing the SIP session signaling control data packet and the RTP media transmission data packet to obtain an analysis result;
and S140, outputting and displaying the analysis result.
Further, the types of the SIP session signaling control data packet include: registration, heartbeat, equipment information query, equipment directory query, equipment state query, configuration query, manual video recording, video channel arming and disarming and alarming, alarm channel arming and disarming and alarming, equipment arming and disarming and alarming, real-time video, forced I frame, pan-tilt control, video recording query totaling, video recording playback, video recording download, talkback and broadcast, subscription and notification, and remote start.
Further, the types of the RTP media transmission data packets include: video data packets and audio data packets.
Further, the coding and decoding formats of the video data packets include H.264, SVAC and MPEG-4.
Further, the coding and decoding formats of the audio data packets include G.711, G.723.1, G.729 and SVAC.
As another aspect of the invention, a system for automatically resolving the GB/T28181 protocol is provided, wherein the system comprises a GB/T28181 device, a GB/T28181 server and a GB/T28181 protocol resolving tool, wherein,
the GB/T28181 equipment is connected to the GB/T28181 server through a wired or wireless network and is used for transmitting network communication data packets;
the GB/T28181 protocol analysis tool is used for acquiring the network communication data packet between the GB/T28181 device and a GB/T28181 server, filtering the network communication data packet to obtain an SIP session signaling control data packet and an RTP media transmission data packet, analyzing the SIP session signaling control data packet and the RTP media transmission data packet to obtain an analysis result, and outputting and displaying the analysis result.
Further, the GB/T28181 protocol analysis tool comprises a data capture module, a protocol analysis module and an output module; wherein the content of the first and second substances,
the data capturing module is used for acquiring a network communication data packet between GB/T28181 equipment and a GB/T28181 server, and filtering the network communication data packet to obtain an SIP session signaling control data packet and an RTP media transmission data packet;
the protocol analysis module is used for analyzing the SIP session signaling control data packet and the RTP media transmission data packet to obtain an analysis result;
and the output module is used for outputting and displaying the analysis result.
Further, the data capturing module further comprises a caching module, and the caching module is used for storing the network communication data packet.
Further, the protocol parsing module comprises a SIP parsing module and a RTP parsing module, wherein,
the SIP analyzing module is used for analyzing the SIP session signaling control data packets with different signaling types and obtaining an SIP analyzing result;
the RTP analysis module is used for judging whether the RTP media transmission data packet is a video data packet or an audio data packet; if the video data packet is judged to be the video data packet, analyzing the video data packet to obtain a video analysis result; and if the audio data packet is judged to be the audio data packet, analyzing the audio data packet and obtaining an audio analysis result.
Further, the output module comprises an analysis result generation module and a display module, wherein,
the analysis result generation module is used for generating and outputting the analysis result;
and the display module is used for displaying the analysis result.
The method for automatically analyzing the GB/T28181 protocol can realize the automatic analysis of the GB/T28181 protocol; and all network data packets in the GB/T28181 communication process are automatically stored, so that error elimination and tracing are facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a flowchart of a method for automatically analyzing GB/T28181 protocol according to the present invention.
FIG. 2 is a flowchart of a specific embodiment of a method for automatically analyzing the GB/T28181 protocol according to the present invention.
FIG. 3 is a block diagram of a system for automatically parsing GB/T28181 protocol according to the present invention.
FIG. 4 is a specific structural block diagram of a GB/T28181 protocol parsing tool provided by the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As an embodiment of the present invention, there is provided a method for automatically parsing a GB/T28181 protocol, as shown in fig. 1, including:
s110, acquiring a network communication data packet between GB/T28181 equipment and a GB/T28181 server;
s120, filtering the network communication data packet to obtain an SIP session signaling control data packet and an RTP media transmission data packet;
s130, analyzing the SIP session signaling control data packet and the RTP media transmission data packet to obtain an analysis result;
and S140, outputting and displaying the analysis result.
Specifically, the types of the SIP session signaling control data packet include: registration, heartbeat, equipment information query, equipment directory query, equipment state query, configuration query, manual video recording, video channel arming and disarming and alarming, alarm channel arming and disarming and alarming, equipment arming and disarming and alarming, real-time video, forced I frame, pan-tilt control, video recording query totaling, video recording playback, video recording download, talkback and broadcast, subscription and notification, and remote start.
Specifically, the types of the RTP media transmission data packets include: video data packets and audio data packets.
Specifically, the encoding and decoding formats of the video data packets include H.264, SVAC, and MPEG-4.
Specifically, the coding and decoding formats of the audio data packets include g.711, g.723.1, g.729 and SVAC.
As shown in fig. 2, the specific process of the method for automatically analyzing the GB/T28181 protocol provided by the present invention is as follows: firstly, a data capturing module captures all network data packets from a network card needing to be monitored, filters the network data packets during capturing, only reserves SIP session signaling control data packets and RTP media transmission data packets, and then stores the data packets; the protocol analysis module continuously acquires the data packets from the storage area queue and analyzes the data packets; for the SIP session signaling control data packet, respectively analyzing the data packets of different signaling types to obtain an analysis result, and then displaying the analysis result by a display module; for RTP media transmission data packets, firstly distinguishing the RTP media transmission data packets into video data packets or audio data packets, wherein the encoding and decoding formats of video data specified in a GB/T28181 protocol comprise H.264, SVAC and MPEG-4, and a protocol analysis tool is used for decoding and splicing the data in the formats so as to play and export the data; the encoding and decoding formats of audio data specified in the GB/T28181 protocol comprise G.711, G.723.1, G.729 and SVAC, and a protocol analysis tool is used for decoding and splicing the data in the audio encoding and decoding formats and then generating a pcm file to play or export the pcm file.
In addition, the analysis of the RTP media transmission data packet also analyzes the network delay and the packet loss rate of the RTP media transmission data, and alarms and displays when a certain threshold value is reached.
As another embodiment of the present invention, there is provided a system for automatically parsing GB/T28181 protocol, as shown in fig. 3, including: GB/T28181 equipment, GB/T28181 server and GB/T28181 protocol analysis tool, wherein,
the GB/T28181 equipment is connected to the GB/T28181 server through a wired or wireless network and is used for transmitting network communication data packets;
the GB/T28181 protocol analysis tool is used for acquiring the network communication data packet between the GB/T28181 device and a GB/T28181 server, filtering the network communication data packet to obtain an SIP session signaling control data packet and an RTP media transmission data packet, analyzing the SIP session signaling control data packet and the RTP media transmission data packet to obtain an analysis result, and outputting and displaying the analysis result.
Specifically, as shown in fig. 4, the GB/T28181 protocol parsing tool includes a data capture module, a protocol parsing module, and an output module; wherein the content of the first and second substances,
the data capturing module is used for acquiring a network communication data packet between GB/T28181 equipment and a GB/T28181 server, and filtering the network communication data packet to obtain an SIP session signaling control data packet and an RTP media transmission data packet;
the protocol analysis module is used for analyzing the SIP session signaling control data packet and the RTP media transmission data packet to obtain an analysis result;
and the output module is used for outputting and displaying the analysis result.
Specifically, as shown in fig. 4, the data capturing module further includes a caching module, and the caching module is configured to store the network communication data packet.
Specifically, as shown in fig. 4, the protocol parsing module includes a SIP parsing module and an RTP parsing module, wherein,
the SIP analyzing module is used for analyzing the SIP session signaling control data packets with different signaling types and obtaining an SIP analyzing result;
the RTP analysis module is used for judging whether the RTP media transmission data packet is a video data packet or an audio data packet; if the video data packet is judged to be the video data packet, analyzing the video data packet to obtain a video analysis result; and if the audio data packet is judged to be the audio data packet, analyzing the audio data packet and obtaining an audio analysis result.
Specifically, as shown in fig. 4, the output module includes a parsing result generation module and a display module, wherein,
the analysis result generation module is used for generating and outputting the analysis result;
and the display module is used for displaying the analysis result.
Specifically, in the embodiment of the invention, the GB/T28181 device is a device which realizes networking monitoring data encapsulation and transmission protocol according to a GB/T28181 protocol and has an audio/video acquisition or playing function; GB/T28181 equipment is connected to a GB/T28181 server through a wired or wireless network and is used for transmitting data such as session signaling and streaming media; the GB/T28181 protocol analysis tool captures communication data between the GB/T28181 device and the GB/T28181 server through a network and carries out verification analysis.
Specifically, in the embodiment of the present invention, (1) capturing and filtering the GB/T28181 data packet: capturing a network communication data packet between GB/T28181 equipment and a GB/T28181 server through an integrated WinCap library, filtering according to a GB/T28181 protocol to obtain an SIP session signaling control data packet to be analyzed and an RTP media transmission data packet, and then storing and analyzing; (2) analyzing the SIP session signaling control data packet: analyzing the session type, comparing the contents of each field in the data packet in detail according to the corresponding session type, and outputting and displaying an analysis result; the method can include automatic analysis of common SIP session control commands such as registration, heartbeat, equipment information query, equipment directory query, equipment state query, configuration query, manual video recording, video channel arming and disarming and alarming, alarm channel arming and disarming and alarming, equipment arming and disarming and alarming, real-time video, forced I frames, holder control, video recording query, video recording playback, video recording download, talkback and broadcast, subscription and notification, remote start and the like; (3) analyzing RTP media transmission data packets: the RTP communication data packet is obtained by capturing and filtering through an automatic analysis tool, common video coding and decoding formats such as H.264, SVAC and MPEG-4 and audio coding and decoding formats such as G.711, G.723.1, G.729 and SVAC can be decoded, the decoded audio and video data are spliced, audio and video playing can be carried out, an output audio and video file can be exported, an analysis result is displayed, and the packet loss rate is calculated at the same time.
In summary, the method and system for automatically analyzing the GB/T28181 protocol provided by the present invention (1) capture all network packets communicated between the GB/T28181 device and the server in real time, and automatically filter the captured packets to obtain RTP protocol packets of the SIP protocol number; (2) automatically analyzing SIP session signaling control protocols in a GB/T28181 protocol, such as registration, heartbeat, equipment information query, equipment directory query, equipment state query, configuration query, manual video recording, video channel arming and disarming and alarm, alarm channel arming and disarming and alarm, equipment arming and disarming and alarm, real-time video, forced I frame, holder control, video recording query, video recording playback, video recording download, talkback and broadcast, subscription and notification, remote start and the like; (3) RTP media transmission protocols such as H.264, SVAC and MPEG-4 video decoding and G.711, G.723.1, G.729 and SVAC audio coding are automatically analyzed; (4) the audio and video transmission packet loss rate and the audio and video transmission network delay time can be automatically analyzed; (5) the specific meaning of each packet of network data in the GB/T28181 communication process can be visually displayed.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A method for automatically parsing a GB/T28181 protocol, comprising:
s110, acquiring a network communication data packet between GB/T28181 equipment and a GB/T28181 server;
s120, filtering the network communication data packet to obtain an SIP session signaling control data packet and an RTP media transmission data packet;
s130, analyzing the SIP session signaling control data packet and the RTP media transmission data packet to obtain an analysis result;
and S140, outputting and displaying the analysis result.
2. The method of automatically parsing GB/T28181 protocol according to claim 1, wherein the type of the SIP session signaling control packet comprises: registration, heartbeat, equipment information query, equipment directory query, equipment state query, configuration query, manual video recording, video channel arming and disarming and alarming, alarm channel arming and disarming and alarming, equipment arming and disarming and alarming, real-time video, forced I frame, pan-tilt control, video recording query totaling, video recording playback, video recording download, talkback and broadcast, subscription and notification, and remote start.
3. The method for automatically parsing GB/T28181 protocol according to claim 1, wherein the type of RTP media transport packets includes: video data packets and audio data packets.
4. The method of claim 3, wherein the codec format of the video data packets comprises H.264, SVAC, and MPEG-4.
5. The method for automatically parsing GB/T28181 protocol according to claim 3, wherein the codec format of said audio data packets includes G.711, G.723.1, G.729 and SVAC.
6. A system for automatically resolving GB/T28181 protocol is characterized by comprising GB/T28181 equipment, a GB/T28181 server and a GB/T28181 protocol resolving tool, wherein,
the GB/T28181 equipment is connected to the GB/T28181 server through a wired or wireless network and is used for transmitting network communication data packets;
the GB/T28181 protocol analysis tool is used for acquiring the network communication data packet between the GB/T28181 device and a GB/T28181 server, filtering the network communication data packet to obtain an SIP session signaling control data packet and an RTP media transmission data packet, analyzing the SIP session signaling control data packet and the RTP media transmission data packet to obtain an analysis result, and outputting and displaying the analysis result.
7. The system for automatically parsing a GB/T28181 protocol according to claim 6, wherein said GB/T28181 protocol parsing tool comprises a data capture module, a protocol parsing module and an output module; wherein the content of the first and second substances,
the data capturing module is used for acquiring a network communication data packet between GB/T28181 equipment and a GB/T28181 server, and filtering the network communication data packet to obtain an SIP session signaling control data packet and an RTP media transmission data packet;
the protocol analysis module is used for analyzing the SIP session signaling control data packet and the RTP media transmission data packet to obtain an analysis result;
and the output module is used for outputting and displaying the analysis result.
8. The system for automatically parsing GB/T28181 protocol according to claim 7, wherein said data capture module further comprises a cache module, said cache module configured to store said network communication data packet.
9. The system for automatically parsing GB/T28181 protocol according to claim 7, wherein said protocol parsing module comprises a SIP parsing module and a RTP parsing module, wherein,
the SIP analyzing module is used for analyzing the SIP session signaling control data packets with different signaling types and obtaining an SIP analyzing result;
the RTP analysis module is used for judging whether the RTP media transmission data packet is a video data packet or an audio data packet; if the video data packet is judged to be the video data packet, analyzing the video data packet to obtain a video analysis result; and if the audio data packet is judged to be the audio data packet, analyzing the audio data packet and obtaining an audio analysis result.
10. The system for automatically parsing GB/T28181 protocol according to claim 7, wherein said output module comprises a parsing result generation module and a display module, wherein,
the analysis result generation module is used for generating and outputting the analysis result;
and the display module is used for displaying the analysis result.
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Application publication date: 20211022 |