CN113438241A - Data transmission method and system - Google Patents
Data transmission method and system Download PDFInfo
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- CN113438241A CN113438241A CN202110712792.5A CN202110712792A CN113438241A CN 113438241 A CN113438241 A CN 113438241A CN 202110712792 A CN202110712792 A CN 202110712792A CN 113438241 A CN113438241 A CN 113438241A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000012790 confirmation Methods 0.000 claims abstract description 18
- 238000013500 data storage Methods 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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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
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/161—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
- H04L69/162—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields involving adaptations of sockets based mechanisms
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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
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/321—Interlayer communication protocols or service data unit [SDU] definitions; Interfaces between layers
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Abstract
The embodiment of the invention relates to the field of data transmission, and particularly discloses a method and a system for realizing data transmission. According to the method and the device, the socket protocol family is set, so that data can be directly received and sent in the link layer, and data do not need to be transmitted layer by layer through the data link layer, the network layer, the transmission layer, the session layer, the presentation layer and the application layer, so that a large amount of consumption of system resources caused by data transmission layer by layer is avoided, and meanwhile, the risk of system collapse caused by memory overflow caused by data sending is also avoided; meanwhile, by arranging the annular memory of the sending end, the annular memory of the receiving end, the annular memory of the message confirmation data of the receiving end and the annular memory of the message confirmation data of the sending end, the stability and the accuracy of data sending and receiving are further improved.
Description
Technical Field
The invention belongs to the field of data transmission, and particularly discloses a data transmission method and a data transmission system.
Background
Because the internet can exchange information without being limited by space, people have shadows everywhere in life and work, the importance of the internet is increasing, and data transmission is the most basic and important part for realizing information interaction.
In the prior art, a socket data transmission method is often adopted to transmit data, and the existing socket data transmission method mainly transmits data layer by layer through a data link layer, a network layer, a transmission layer, a session layer, a presentation layer and an application layer, and the adoption of layer-by-layer data transmission can cause a large amount of consumption of system resources, and meanwhile, a large amount of data transmission causes memory overflow, thereby causing the risk of system breakdown.
Disclosure of Invention
In order to solve the above problem, the present application provides a data transmission method, which specifically includes:
s1, acquiring data and data parameters, and distributing the memory size of the annular memory of the sending terminal according to the data parameters;
s2, writing the data into the sending end annular memory, circularly reading the data in the sending end annular memory by the sending end message confirmation data annular memory, and sending the data to the receiving end message confirmation data annular memory;
and S3, circularly storing the data into the receiving end annular memory by the receiving end message confirmation data annular memory, and circularly reading the data in the receiving end annular memory by a receiving end application program.
Further, the S1 specifically includes:
the data parameters include data structure, size of used memory blocks, and number of practical memory blocks.
Further, the S2 specifically includes:
s21: setting a socket protocol family, and writing data into the sending end annular memory of the link layer;
s22: and the sending end message confirms that the annular data storage circularly reads the data in the annular sending end storage, and judges whether the annular sending end storage has the data.
Further, the S22 specifically includes:
if yes, calling a socket to send the data to a receiving end message confirmation data annular memory;
if not, the sending end message confirms that the data ring memory is in a waiting state.
Further, the S3 specifically includes:
s31: calling a socket to receive data;
s32: the receiving end message confirms the data annular memory and judges whether the data in the transmitting end annular memory is received or not;
if yes, circularly storing the data in the sending end annular memory to a receiving end annular memory, and circularly reading the data in the receiving end annular memory by an application program;
if not, the receiving end message confirms that the data ring memory is in a waiting state.
A data transmission system is used for realizing the data transmission method.
Compared with the prior art, the beneficial effects of the method are detailed as follows: by setting the socket protocol family, the method and the device realize the transmission of data between link layers, avoid the large consumption of system resources caused by transmitting data layer by layer, and also avoid the risk of system crash caused by memory overflow caused by data transmission; meanwhile, by arranging the annular memory of the sending end, the annular memory of the receiving end, the annular memory of the message confirmation data of the receiving end and the annular memory of the message confirmation data of the sending end, the stability and the accuracy of data sending and receiving are further improved.
Drawings
Fig. 1 is a schematic flowchart of a method for implementing data transmission according to an embodiment of the present invention;
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a data transmission method, which is applied to a data transmission system, where the system includes a ring memory of a sending end, a ring memory of a receiving end, a ring memory of message acknowledgment data of the receiving end, and a ring memory of message acknowledgment data of the sending end, and the specific method includes:
s1, acquiring data and data parameters, and distributing the memory size of the annular memory of the sending terminal according to the data parameters;
s2, writing the data into the sending end annular memory, circularly reading the data in the sending end annular memory by the sending end message confirmation data annular memory, and sending the data to the receiving end message confirmation data annular memory;
and S3, circularly storing the data into the receiving end annular memory by the receiving end message confirmation data annular memory, and circularly reading the data in the receiving end annular memory by a receiving end application program.
The annular memory is a fixed memory space, a user puts data into the annular memory one by one, and moves the write pointer backwards until the difference value between the write pointer and the read pointer is zero, the annular memory is filled with the data, and the write data is in a waiting state. When a user reads the data of the annular memory, the reading pointer moves backwards when reading one piece of data until the reading pointer is equal, no data can be read, and the read data is in a waiting state.
Therefore, in order to maximize the storage efficiency of the annular memory, the data needs to be analyzed according to the parameters of the data, and then the memory size of the annular memory needs to be allocated according to the result of the data analysis.
As shown in fig. 1, other application programs at the sending end first generate data, and allocate the size of the memory of the ring memory at the sending end according to the data parameters, where the data parameters include a data structure, the size of the used memory blocks, and the number of the practical memory blocks; setting a socket protocol family, storing the data into an annular memory of a link layer sending end according to the size of a distributed memory, circularly reading the data in the annular memory by a sending end message confirmation data annular memory, judging whether the annular memory of the sending end has the data or not, and circularly reading and judging the annular memory of the sending end, wherein the circular reading and judging are carried out on the annular memory of the sending end, and the circular reading and judging are used for preventing the condition that the data is missed to be sent, and if the data is read, the socket is called to send the data to a receiving end message confirmation data annular memory; and if the data is not read, the sending end message confirms that the annular data storage is in a waiting state, and the sending end message confirms that the annular data storage continues to perform the next cycle reading judgment.
The set socket protocol family is specifically a protocol that sets the protocol family of the socket to be PF _ PACKET, sets the socket _ type to be socket _ RAW, and enables data to be directly received and sent at a link layer without passing through a higher layer of the link layer by using a standard physical layer address structure socket addr _ ll that is independent of devices.
At a receiving end, calling a socket to receive data of a transmitting end annular memory, and determining whether the data in the transmitting end annular memory is received or not by the receiving end message confirmation data annular memory; if the judgment result is that the data are stored, circularly storing the data in the sending end annular memory to a receiving end annular memory, and circularly reading the data in the receiving end annular memory by an application program; if the judgment result is that no data exists, the receiving end message confirms that the data annular memory is in a waiting state.
A data transmission system, configured to implement the data transmission method, the specific implementation process of which is described above and is not described herein again.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It is further noted that, herein, relational terms such as first and second, and the like may be 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. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the same element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A method of data transmission, the method comprising:
s1, acquiring data and data parameters, and distributing the memory size of the annular memory of the sending terminal according to the data parameters;
s2, writing the data into the sending end annular memory, circularly reading the data in the sending end annular memory by the sending end message confirmation data annular memory, and sending the data to the receiving end message confirmation data annular memory;
and S3, circularly storing the data into the receiving end annular memory by the receiving end message confirmation data annular memory, and circularly reading the data in the receiving end annular memory by a receiving end application program.
2. The data transmission method according to claim 1, wherein the S1 specifically is:
the data parameters include data structure, size of used memory blocks, and number of practical memory blocks.
3. The data transmission method according to claim 1, wherein the S2 specifically is:
s21: setting a socket protocol family, and writing data into the sending end annular memory of the link layer;
s22: and the sending end message confirms that the annular data storage circularly reads the data in the annular sending end storage, and judges whether the annular sending end storage has the data.
4. The data transmission method according to claim 3, wherein the S22 specifically is:
if yes, calling a socket to send the data to a receiving end message confirmation data annular memory;
if not, the sending end message confirms that the data ring memory is in a waiting state.
5. The data transmission method according to claim 1, wherein the S3 specifically is:
s31: calling a socket to receive data;
s32: the receiving end message confirms the data annular memory and judges whether the data in the transmitting end annular memory is received or not;
if yes, circularly storing the data in the sending end annular memory to a receiving end annular memory, and circularly reading the data in the receiving end annular memory by an application program;
if not, the receiving end message confirms that the data ring memory is in a waiting state.
6. A data transmission system for carrying out the data transmission method of any one of claims 1 to 5.
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| CN202110712792.5A CN113438241B (en) | 2021-06-25 | 2021-06-25 | Data transmission method and system |
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| CN202110712792.5A CN113438241B (en) | 2021-06-25 | 2021-06-25 | Data transmission method and system |
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