CN116455532A - Reliable data transmission method, device, equipment and electronic medium - Google Patents
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- CN116455532A CN116455532A CN202310430776.6A CN202310430776A CN116455532A CN 116455532 A CN116455532 A CN 116455532A CN 202310430776 A CN202310430776 A CN 202310430776A CN 116455532 A CN116455532 A CN 116455532A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000004044 response Effects 0.000 claims abstract description 95
- 238000004590 computer program Methods 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 4
- 230000006855 networking Effects 0.000 description 6
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
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Abstract
The application provides a reliable data transmission method, device, equipment and medium, wherein the method comprises the following steps: the data sender sends the data packet to be sent to a data receiver through a first transmission path; the data sender transmits the heartbeat packet through the second a transmission path is sent to the data receiver; and receiving a first response data packet returned by the data receiver through the first transmission path and a second response data packet returned by the second transmission path, wherein the second response data packet multiplexes the response packets of the heartbeat packet so as to solve the problem that the existing data transmission scheme cannot reliably transmit data.
Description
Technical Field
The present invention relates to the field of data processing technologies, and in particular, to a method, an apparatus, a device, and an electronic medium for reliable data transmission.
Background
Because of the continuous development of the video networking, a large number of video networking terminals are laid at all corners of the country, so that the communication between province level and province level, between province level and city level and between province level and county level is greatly increased, and the reliable transmission of data is particularly important.
As a reliable data transmission scheme, a sender sends a data packet to a receiver through a transmission path, a receiver returns a response data packet to the sender, if the sender receives the response data packet of the receiver, the sender considers that the data packet of the sender is sent to the receiver, if a network is blocked or dithered, a data packet loss phenomenon easily occurs, and thus the data packet of the sender cannot be sent to the receiver, so that how to realize reliable transmission of data between the sender and the receiver becomes a problem to be solved urgently.
Disclosure of Invention
The application provides a reliable data transmission method, device, equipment and medium, so as to solve the problem that the existing data transmission scheme can not reliably transmit data.
To solve the above problems, the present application discloses a reliable transmission method of data, the method comprising:
the data sender sends the data packet to be sent to a data receiver through a first transmission path;
the data sender sends the heartbeat packet to the data receiver through a second transmission path;
and receiving a first response data packet returned by the data receiver through the first transmission path and a second response data packet returned by the second transmission path, wherein the second response data packet multiplexes the response packets of the heartbeat packet.
Optionally, before the data sender sends the data packet to be sent to the data receiver through the first transmission path, the method further includes:
adding the data packet to be sent to a memory cache;
sorting the data packets to be sent according to a primary key value, wherein the primary key value comprises: priority, task number and SEQ sequence of the data packet;
and sequentially sending the data packets to be sent in the memory cache.
Optionally, the method further comprises:
deleting the confirmed data packet of the data receiver in the memory cache;
judging whether the preservation time of the data packet to be sent in the sending memory buffer exceeds a preset time threshold, if so, deleting the data packet to be sent.
Optionally, the method further comprises:
and when the memory buffer is empty, modifying the second transmission path of the data sender from receiving a second response data packet to sending the heartbeat packet.
Optionally, the data packet to be sent, the first response data packet and the second response data packet encapsulate the data packet to be sent, the first response data packet and the second response data packet according to a protocol format agreed by the data sender and the data receiver.
Optionally, the data sender includes: a first port and a second port, the data receiver comprising: the first port corresponds to the third port to form the first transmission path, and the second port corresponds to the fourth port to form the second transmission path.
To solve the above problem, the present application further discloses a reliable data transmission device, which includes:
the first transmission module is used for the data sender to send the data packet to be sent to the data receiver through a first transmission path;
the second transmission module is used for the data sender to send the heartbeat packet to the data receiver through a second transmission path;
and the receiving module is used for receiving a first response data packet returned by the data receiver through the first transmission path and a second response data packet returned by the second transmission path, and the second response data packet multiplexes the response packets of the heartbeat packet.
Optionally, the apparatus further comprises:
the adding module is used for adding the data packet to be sent to a memory cache;
the sorting module is configured to sort the data packets to be sent according to a primary key value, where the primary key value includes: priority, task number and SEQ sequence of the data packet;
and the sending module is used for sequentially sending the data packets to be sent in the memory cache.
In order to solve the above problems, the present application further discloses an electronic device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein the processor implements a reliable data transmission method when executing the computer program.
To solve the above-mentioned problems, the present application also discloses a computer-readable storage medium storing a computer program that when executed by a processor implements a reliable transmission method of data.
Compared with the prior art, the application has the following advantages:
the data sender sends a data packet to be sent to a data receiver through a first transmission path; the data sender sends the heartbeat packet to the data receiver through a second transmission path; and receiving the response data packet returned by the data receiver through the first transmission path and the response data packet returned by the second transmission path, adopting two transmission paths to return the response data packet aiming at one data packet to be transmitted of the data sender, and multiplexing the response data packet of the heartbeat packet by the response data packet, thereby avoiding the phenomenon of data packet loss caused by network blockage or jitter and realizing reliable data transmission.
Of course, it is not necessary for any of the products of the present application to be practiced with all of the advantages described above.
Drawings
FIG. 1 is a flow chart of a method for reliable transmission of data according to an embodiment of the present application;
FIG. 2 is a flow chart of a method for reliable transmission of data according to an embodiment of the present application;
FIG. 3 is an application example of a reliable transmission method for implementing the data according to the embodiments of the present application;
fig. 4 is a block diagram of a method for reliable transmission of data according to an embodiment of the present application.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
In the related art, as a reliable data transmission scheme, a sender sends a data packet to a receiver through a transmission path, a receiver returns a response data packet to the sender, if the sender receives the response data packet of the receiver, the sender considers that the data packet sent to the receiver reaches the receiver, that is, a channel is adopted to send and receive the data packet, if a network is blocked or dithered, a data packet loss phenomenon easily occurs, so that the data packet sent to the receiver cannot be sent to the receiver.
Based on the technical concept, referring to fig. 1, a flowchart of a method for reliably transmitting data according to an embodiment of the present application is shown, where the method includes:
step 101: the data sender sends the data packet to be sent to the data receiver through a first transmission path.
The data packet to be sent may be an audio/video data packet, a link topology data packet, or other types of data packets, which is not limited in this application.
In practical application, the data sender is a client or a server, the data receiver is a client or a server, and both the data sender and the data receiver adopt a dual-port design, namely, the data sender comprises: a first port and a second port, the data receiver comprising: the first port corresponds to the third port to form the first transmission path, and the second port corresponds to the fourth port to form the second transmission path.
The first transmission path is used for transmitting the data packet and receiving the first response data packet, namely the data sender transmits the data packet to be transmitted to the data receiver through the first transmission path, and the data receiver transmits the first response data packet to the data receiver through the first transmission path.
The second transmission path is used for periodically sending heartbeat packets, namely, the data sender periodically sends the heartbeat packets to the data receiver and receives response packets of the heartbeat packets, and the second transmission path is also used for receiving second response data packets returned by the data receiver, namely, the second response data packets are multiplexed with the transmission paths of the heartbeat packets.
Step (a) 102: the data sender sends the heartbeat packet to the data receiver through a second transmission path.
In practical application, the data sender periodically sends the heartbeat packet to the data receiver through the second transmission path, and then the data receiver returns a response packet of the heartbeat packet to the data sender.
Step 103: and receiving a first response data packet returned by the data receiver through the first transmission path and a second response data packet returned by the second transmission path, wherein the second response data packet multiplexes the response packets of the heartbeat packet.
The data receiver sends a first response data packet to the data sender through a first transmission path, and sends a second response data packet to the data sender through a second transmission path, wherein the second response data packet multiplexes the response packet of the heartbeat packet, namely the second response data packet replaces the response packet of the heartbeat packet, and then the second response data packet is sent to the data sender through the second transmission path.
In this embodiment, for a data packet to be sent from a data sender, two transmission paths are adopted to return a response data packet, and the response data packet multiplexes a response packet of a heartbeat packet, thereby avoiding a data packet loss phenomenon caused by network congestion or jitter, and realizing data reliability.
Referring to fig. 2, a flowchart of a method for reliable transmission of data according to an embodiment of the present application is shown, where the method includes:
step 201: and adding the data packet to be sent to a memory cache.
In practical application, in order to prevent the overflow of the transmission memory buffer, before adding the data packet to be transmitted to the memory buffer, it may be determined whether the memory buffer has a free space, if the memory buffer is full, the data packet to be transmitted is discarded, and if not, the data sender adds the data packet to be transmitted to the memory buffer.
Step 202: and sequencing the data packets to be sent according to the primary key value.
Wherein the primary key value includes: priority of data packet, task number and SEQ sequence.
The data sender sorts the data packets to be sent cached in the memory according to the primary key value, mainly sorts the data packets to be sent according to the priority of the data packets, sorts the data packets according to the task number, and sorts the data packets according to the SEQ sequence (sending sequence).
Step 203: and sequentially sending the data packets to be sent in the memory cache.
The sorting of the data packets to be sent is achieved through step 202, then the data packets to be sent after being sorted in the memory buffer are sent according to the sequence, and before the data packets to be sent in the memory buffer are sent out, the data sender encapsulates the data packets to be sent into the data packets to be sent according to a protocol format agreed by the two parties, wherein the protocol format comprises: a protocol header field, a sub-service type, a total number of packets, a current packet sequence number, a primary key value, a data item, a CRC checksum, and a protocol trailer.
Step 204: the data sender sends the data packet to be sent to the data receiver through a first transmission path.
The protocols agreed by the data sender and the data receiver can be Transmission Control Protocol (TCP), user data packet protocol (UDP), video networking protocol (Vis) and network management Software (SNMP), and can also be other protocols, so that the application is not particularly limited.
Before the data packet to be sent is added to the memory cache, the data packet to be sent is packaged into a sending data packet according to the protocol format by adopting the protocol, namely, the data packet to be sent is packaged into the data packet to be sent according to a protocol header field, a sub-service type, a total packet number, a current packet serial number, a main key value, a data item, a CRC checksum and a protocol tail, and a data sender sends the data packet to be sent to a data receiver.
Protocol header fields as shown in the following table, the protocol fields include: TCP, UDP, video networking protocol, SNMP, sub-service types include: the network management system serves NMS, represents with 0x01, central management service CMS, represents with 0x02, cluster service MGR, represents with 0x03, heartbeat packet and response data packet.
For example: and if the protocol between the data sender and the data receiver is the video networking protocol and the sub-service type is the network management system service NMS, filling the video networking protocol into a protocol header field of the data packet to be sent, adding 0x01 into a sub-service type field, and encapsulating the total packet number, the current packet sequence number, the main key value field as null, the data item field added data, the CRC check field as null and the end field added end field identifier into the data packet to be sent.
Step 205: the data sender sends the heartbeat packet to the data receiver through a second transmission path.
In practical application, the data sender periodically sends the heartbeat packet to the data receiver through the second transmission path, and the data receiver sends the response packet of the heartbeat packet to the data sender.
Step 206: and receiving a first response data packet returned by the data receiver through the first transmission path and a second response data packet returned by the second transmission path, wherein the second response data packet multiplexes the response packets of the heartbeat packet.
The data receiver encapsulates the response data packet according to a protocol agreed with the data sender, namely encapsulates the response data packet into a first response data packet according to a protocol header field, a sub-service type, a total packet number, a current packet sequence number, a primary key value, a data item, a CRC checksum and a protocol tail, and sends the first response data packet to the data sender.
In practical applications, the data receiver may encapsulate the first response packet according to the following table format.
The data receiver returns a second response data packet through the second transmission path, and the second response data packet directly takes the place of the response packet of the heartbeat packet and returns the response packet of the heartbeat packet to the data sender because the heartbeat packet also returns the response packet of the heartbeat packet through the second transmission path.
Step 207: and deleting the confirmed data packet of the data receiver in the memory cache.
In order to ensure the reliability of data transmission, the data receiver needs to reply an acknowledgement, and the data sender deletes the data packet in the transmission buffer only if the acknowledgement receiver receives or confirms that the network is not available.
Step 208: judging whether the preservation time of the data packet to be sent in the sending memory cache exceeds a preset time value, if so, deleting the data packet to be sent.
The time threshold may be set by a person skilled in the art in any suitable manner, for example, a time threshold may be set by using a manual experience, or a time threshold may be set for a difference value of historical data, which is not limited in this application.
Step 209: and when the memory buffer is empty, modifying the second transmission path of the data sender from receiving response data packets to sending the heartbeat packets.
When the memory buffer is empty, it indicates that all data in the memory buffer has been sent, and counting is performed from the beginning, so that the second transmission path of the data sender is modified from receiving response data packets to sending the heartbeat packets, and the heartbeat packets detect whether the data sender and the data receiver keep heartbeat.
In this embodiment, reliable data transmission is realized by multiplexing the transmission paths of the heartbeat packets in response to the data packets.
For a better understanding of the technical solution defined in the present application, reference is made to fig. 3, which shows an example of the application of a reliable transmission device for data as described in the present application.
The embodiment comprises the following steps: client, proxy server, server_nms, server_cms, and server_mgr.
The following describes the process of reliable data transmission in terms of link topology packets setting up the internet of view server.
Step 1: the client sends the link topology data packet to the proxy server through the first transmission path, and encapsulates the link topology data packet according to the following table format.
It should be noted that, the sub-service corresponding to the link topology data packet is nms, and if the sub-service is other types of data packets, only the sub-service type needs to be set to be different sub-services.
Specifically, the client adds the link topology data packet to be sent to the sending queue, meanwhile, the link topology data packet is stored in a database or a file or a whole packet cache in a memory cache, the sub-service type is set to be the data packet sent to the nms server, and if the sub-service nms confirmation request of the background is not received by the proxy server within a specified time due to network congestion or packet loss, the client periodically sends the link topology data packet in the cache.
Step 2: the proxy server forwards the link topology data packet to be sent to the nms server.
The link topology data packet to be sent comprises a data head, a command word, a tail and the like of the link topology of the nms setting visual network server, and the intermediate protocol data is as follows:
{"id":"003387e7b4d64ad29ccda1bade951136","operid":"systemuser","usertokeni d":"systemuser","machinetime":"1679968620676506"}
step 3: and the client sends the heartbeat packet to the proxy server through the second transmission path, wherein the length priority, SEQ and task number of the heartbeat packet are all filled with 0, and the format refers to the format of the following table.
The outer protocol of step 3 is used to send to the proxy server, and then the data field contains the sub-protocol of the nms service, sending the heartbeat link for maintaining the user system.
Step 4: the NMS service receives the link topology data packet forwarded by the proxy server, sets the topology of the server according to the link topology data packet, returns a correct or failure result through the proxy server, and when a channel from one channel to the next fails to arrive due to network storm and network congestion. The NMS server then periodically returns a second response packet in place of the response heartbeat packet by multiplexing the second transmission path.
Step 5: if the client receives no response data packet through the second transmission path when the network is congested, the heartbeat connection is disconnected after the heartbeat is overtime, if the second response data packet of the NMS is received, the data packet confirmed by the NMS server is deleted from the memory cache, at the moment, the machine time of the NMS server and the time of the client are made to be different, the time difference is obtained, and the client retransmits the data packet which is not processed by the NMS server according to the time difference.
The processing procedure of the packet for the sever_cms304 and the sever_mgr305 may refer to the processing procedure of the packet for the sever_nms.
It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present application is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments and that the acts referred to are not necessarily required for the present application.
Based on the description of the method embodiments, the application further provides corresponding apparatus embodiments to implement the content of the method embodiments.
Referring to fig. 4, there is shown a block diagram of a reliable transmission apparatus for data according to an embodiment of the present application, the apparatus includes:
a first transmission module 401, configured to send a data packet to be sent to a data receiver through a first transmission path by a data sender;
a second transmission module 402, configured to send a heartbeat packet to the data receiver through a second transmission path by the data sender;
and the receiving module 403 is configured to receive a first response data packet returned by the data receiver through the first transmission path and a second response data packet returned by the second transmission path, where the second response data packet multiplexes a response packet of the heartbeat packet.
Optionally, the apparatus further comprises:
the adding module is used for adding the data packet to be sent to a memory cache;
the sorting module is configured to sort the data packets to be sent according to a primary key value, where the primary key value includes: priority, task number and SEQ sequence of the data packet;
and the sending module is used for sequentially sending the data packets to be sent in the memory cache.
Optionally, the apparatus further comprises:
the deleting module is used for deleting the data packet confirmed by the data receiver in the memory cache;
and the judging module is used for judging whether the preservation time of the data packet to be sent in the sending memory cache exceeds a preset time value, and if so, deleting the data packet to be sent.
Optionally, the apparatus further comprises:
and the modifying module is used for modifying the second transmission path of the data sender from receiving a second response data packet to sending the heartbeat packet when the memory buffer is empty.
Optionally, the data packet to be sent and the response data packet encapsulate the data packet to be sent and the response data packet according to a protocol format agreed by the data sender and the data receiver.
Optionally, the data sender includes: a first port and a second port, the data receiver comprising: the first port corresponds to the third port to form the first transmission path, and the second port corresponds to the fourth port to form the second transmission path.
In this embodiment, a data sender sends a data packet to be sent to a data receiver through a first transmission path; the data sender sends the heartbeat packet to the data receiver through a second transmission path; and receiving a response data packet returned by the data receiver through the first transmission path, a response data packet returned by the second transmission path and a response heartbeat packet, and adopting two transmission paths to return the response data packet aiming at one data packet to be transmitted of the data sender, wherein the response data packet multiplexes the response packet of the heartbeat packet, thereby avoiding the phenomenon of data packet loss caused by network blockage or jitter and realizing reliable data transmission.
For the device embodiments described above, the description is relatively simple as it is substantially similar to the method embodiments, with reference to the description of the method embodiments shown.
The embodiment of the invention also provides electronic equipment, which comprises:
one or more processors; and
one or more machine readable media having instructions stored thereon that, when executed by the one or more processors, cause the electronic device to perform the method of reliably transmitting data. The embodiment of the invention also provides a computer readable storage medium, and a stored computer program causes a processor to execute the reliable transmission method of the data.
Alternatively, the computer readable storage medium may be a non-transitory computer readable storage medium, for example, a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
As will be readily appreciated by those skilled in the art: any combination of the above embodiments is possible, and thus is an embodiment of the present invention, but the present specification is not limited by the text. While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
The foregoing has described in detail the method, apparatus, device and medium for reliable transmission of data provided by the present invention, and specific examples have been applied herein to illustrate the principles and embodiments of the present invention, the above examples being only for aiding in the understanding of the method and core idea of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (10)
1. A method of reliable transmission of data, the method comprising:
the data sender sends the data packet to be sent to a data receiver through a first transmission path;
the data sender sends the heartbeat packet to the data receiver through a second transmission path;
and receiving a first response data packet returned by the data receiver through the first transmission path and a second response data packet returned by the second transmission path, wherein the second response data packet multiplexes the response packets of the heartbeat packet.
2. The method of claim 1, wherein before the data sender sends the data packet to be sent to the data receiver via the first transmission path, further comprising:
adding the data packet to be sent to a memory cache;
sorting the data packets to be sent according to a primary key value, wherein the primary key value comprises: priority, task number and SEQ sequence of the data packet;
and sequentially sending the data packets to be sent in the memory cache.
3. The method according to claim 2, wherein the method further comprises:
deleting the confirmed data packet of the data receiver in the memory cache;
judging whether the preservation time of the data packet to be sent in the sending memory buffer exceeds a preset time threshold, if so, deleting the data packet to be sent.
4. The method according to claim 2, wherein the method further comprises:
and when the memory buffer is empty, modifying the second transmission path of the data sender from receiving a second response data packet to sending the heartbeat packet.
5. The method of claim 1, wherein the data packet to be transmitted, the first response data packet, and the second response data packet encapsulate the data packet to be transmitted, the first response data packet, and the second response data packet in a protocol format agreed upon by the data sender and the data receiver.
6. The method according to any one of claims 1-5, wherein the data sender comprises: a first port and a second port, the data receiver comprising: the first port corresponds to the third port to form the first transmission path, and the second port corresponds to the fourth port to form the second transmission path.
7. A reliable data transmission apparatus, the apparatus comprising:
the first transmission module is used for the data sender to send the data packet to be sent to the data receiver through a first transmission path;
the second transmission module is used for the data sender to send the heartbeat packet to the data receiver through a second transmission path;
and the receiving module is used for receiving a first response data packet returned by the data receiver through the first transmission path and a second response data packet returned by the second transmission path, and the second response data packet multiplexes the response packets of the heartbeat packet.
8. The apparatus of claim 7, wherein the apparatus further comprises:
the adding module is used for adding the data packet to be sent to a memory cache;
the sorting module is configured to sort the data packets to be sent according to a primary key value, where the primary key value includes: priority, task number and SEQ sequence of the data packet;
and the sending module is used for sequentially sending the data packets to be sent in the memory cache.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements a reliable transmission method of data according to any of claims 1 to 6 when the computer program is executed by the processor.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when executed by a processor, implements a method of reliable transmission of data according to any one of claims 1 to 6.
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| CN202310430776.6A CN116455532A (en) | 2023-04-20 | 2023-04-20 | Reliable data transmission method, device, equipment and electronic medium |
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| CN202310430776.6A CN116455532A (en) | 2023-04-20 | 2023-04-20 | Reliable data transmission method, device, equipment and electronic medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117112543A (en) * | 2023-08-14 | 2023-11-24 | 济南大学 | Big data information management system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117112543A (en) * | 2023-08-14 | 2023-11-24 | 济南大学 | Big data information management system and method |
| CN117112543B (en) * | 2023-08-14 | 2024-02-27 | 济南大学 | Big data information management system and method |
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