CN114629894B - Internet of things data transmission method and device for electronic data evidence collection - Google Patents
Internet of things data transmission method and device for electronic data evidence collection Download PDFInfo
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- CN114629894B CN114629894B CN202210272853.5A CN202210272853A CN114629894B CN 114629894 B CN114629894 B CN 114629894B CN 202210272853 A CN202210272853 A CN 202210272853A CN 114629894 B CN114629894 B CN 114629894B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 6
- 230000000737 periodic effect Effects 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
Abstract
The invention provides a transmission method of internet of things data, which comprises the following steps: after the completion of the electronic evidence obtaining is detected, acquiring resource information of the Internet of things equipment; the resource information comprises network bandwidth use information and memory use information of the Internet of things equipment; determining a data transmission strategy according to the resource information; and transmitting data according to the data transmission strategy.
Description
Technical Field
The invention relates to the technical field of data transmission, in particular to a method and a device for transmitting internet of things data for electronic data evidence collection.
Background
Electronic data evidence obtaining refers to the process of confirming, protecting, extracting and archiving electronic evidence which can be accepted by court, is reliable enough and convincing, and exists in a computer and related peripheral equipment, so that the electronic data evidence obtaining is often limited by electronic equipment and network environment, and particularly, how to safely and efficiently carry out data evidence obtaining in the environment of the Internet of things is a problem to be solved urgently.
At present, how to perform safe and efficient data transmission in the environment of the internet of things is still in a primary research stage, and the internet of things equipment is often provided with a low-performance and low-power-consumption processor, so that efficient algorithm calculation cannot be performed. The general method is that the acquired data is converted into a fixed format and is communicated by adopting tcp connection, or the data to be transmitted is transmitted as a request body by adopting an http protocol. However, no matter the transmission is TCP transmission or HTTP transmission, the balance among the three aspects of equipment performance, high-efficiency transmission and communication safety can not be found, the network operation of a normal user is easily influenced, and the problems of evidence obtaining exposure, resource waste and the like are caused.
Disclosure of Invention
The invention mainly aims to provide a method and a device for transmitting data of the Internet of things, which aim to solve the problem of how to improve the efficiency of data transmission during the evidence obtaining of electronic data in the environment of the Internet of things.
In order to achieve the above object, the present invention provides a method for transmitting data of internet of things, including:
step 1, after detecting that electronic evidence obtaining is completed, acquiring resource information of the Internet of things equipment; the resource information comprises network bandwidth use information and memory use information of the Internet of things equipment;
step 2, determining a data transmission strategy according to the resource information, wherein the data transmission strategy comprises the following steps:
determining the current network resource state according to the network bandwidth use condition:
when the network bandwidth utilization rate is less than 50%, the network resource is in a sufficient state, and the transmission of evidence obtaining data is not affected at the moment, and data caching and data deduplication are not performed;
the network bandwidth utilization rate is in a network resource tension state when the network bandwidth utilization rate is more than or equal to 50% and less than 80%, and the evidence obtaining data is subjected to duplication removal processing;
when the network bandwidth utilization rate is greater than or equal to 80%, the network resource is in an insufficient state, the evidence obtaining data is subjected to duplication removal, the duplicated data is written into a data buffer area, and the data is sent out when the network resource is in a sufficient state;
and step 3, transmitting data according to the data transmission strategy.
Wherein, step 1 further includes: detecting completion of electronic evidence obtaining, checking evidence obtaining data, and confirming that the data is complete; and periodically reading network card information and memory information of the Internet of things equipment, and calculating network bandwidth use conditions and memory use conditions, wherein the network bandwidth use conditions comprise network bandwidth size and network bandwidth use rate, and the memory use conditions comprise residual memory space size and memory space use rate.
Wherein the periodic reading is set to read once every 60 seconds;
when the buffer area is set, setting the size of the buffer area to be 80% of the residual memory space when the memory utilization rate is lower than 50%; when the memory usage rate is greater than or equal to 50% and less than 80%, setting the buffer Size to size= (net_i =70++net_a =30%) ×m; the current network bandwidth utilization rate of net_i, net_a, and m are the last acquired network bandwidth utilization rate and the residual memory space.
Wherein, the data deduplication includes: performing inverted index analysis on the evidence obtaining data, marking data records with high occurrence frequency in the evidence obtaining data in adjacent time, reserving a first data record, and discarding other repeated data records;
the data record in the evidence obtaining data is provided with a time stamp, and the time stamp represents the evidence obtaining time of the data record; the adjacent time is calculated according to the time stamp of the data record in the evidence obtaining data, and the range of the adjacent time is set to be 300-3000 seconds;
when the memory space utilization rate is higher than 80%, the range of the adjacent time is enlarged, and the data deduplication ratio is improved.
After the data is transmitted, the data buffer area is emptied.
The invention also provides a device for transmitting the data of the Internet of things, which comprises:
the resource acquisition module is used for acquiring resource information of the Internet of things equipment after the completion of the electronic evidence acquisition is detected; the resource information comprises network bandwidth use information and memory use information of the Internet of things equipment;
and the transmission strategy module is used for determining a data transmission strategy according to the resource information, wherein the data transmission strategy comprises the following steps:
determining the current network resource state according to the network bandwidth use condition:
when the network bandwidth utilization rate is less than 50%, the network resource is in a sufficient state, and the transmission of evidence obtaining data is not affected at the moment, and data caching and data deduplication are not performed;
when the network bandwidth utilization rate is more than 50% and less than 80%, the network bandwidth utilization rate is in a network resource tension state, and the evidence obtaining data is subjected to duplication removal processing;
when the network bandwidth utilization rate is more than 80%, the network resource is in an insufficient state, the evidence obtaining data is subjected to duplication removal, the duplicated data is written into a data buffer area, and the data is sent out when the network resource is in a sufficient state;
and the data transmission module is used for transmitting data according to the data transmission strategy.
Wherein, the resource acquisition module further comprises: detecting completion of electronic evidence obtaining, checking evidence obtaining data, and confirming that the data is complete; and periodically reading network card information and memory information of the Internet of things equipment, and calculating network bandwidth use conditions and memory use conditions, wherein the network bandwidth use conditions comprise network bandwidth size and network bandwidth use rate, and the memory use conditions comprise residual memory space size and memory space use rate.
Wherein the periodic reading is set to read once every 60 seconds;
when the buffer is set, setting the buffer Size as size= (net_i is 70% + net_a is 30%). M; the current network bandwidth utilization rate of net_i, net_a, and m are the last acquired network bandwidth utilization rate and the residual memory space.
Wherein, the data deduplication module includes: performing inverted index analysis on the evidence obtaining data, marking data records with high occurrence frequency in the evidence obtaining data in adjacent time, reserving a first data record, and discarding other repeated data records;
the data record in the evidence obtaining data is provided with a time stamp, and the time stamp represents the evidence obtaining time of the data record; the adjacent time is calculated according to the time stamp of the data record in the evidence obtaining data, and the range of the adjacent time is set to be 300-3000 seconds;
when the memory space utilization rate is higher than 80%, the range of the adjacent time is enlarged, and the data deduplication ratio is improved.
After the data is transmitted, the data buffer area is emptied.
The invention also comprises a transmission device of the internet of things data, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the transmission method of the internet of things data when executing the program.
The invention also comprises a computer readable storage medium storing computer executable instructions, which is characterized in that the computer executable instructions are used for executing the transmission method of the data of the internet of things.
The beneficial effects of the invention include: (1) According to the method, network bandwidth use information and memory use information of the Internet of things equipment are comprehensively considered, a targeted data transmission strategy is formulated, data deduplication and a buffer zone are started timely, and balance among equipment performance, efficient transmission and communication safety is found as much as possible; (2) The buffer area is set to comprehensively consider the change trend of the residual memory space and the network bandwidth utilization rate, so that the processing load of the Internet of things equipment is reduced; (3) The intelligent data deduplication mechanism fully utilizes the residual memory space, and effectively reduces the network transmission burden.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The invention mainly aims to provide a method and a device for transmitting data of the Internet of things, which aim to solve the problem of how to improve the efficiency of data transmission during the evidence obtaining of electronic data in the environment of the Internet of things.
In order to achieve the above object, the present invention provides a method for transmitting data of internet of things, including:
step 1, after detecting that electronic evidence obtaining is completed, acquiring resource information of the Internet of things equipment; the resource information comprises network bandwidth use information and memory use information of the Internet of things equipment;
the internet of things device relies on the Libpcap packet capturing module to capture network traffic packets, and uses the iftop to carry out network traffic data statistics, so as to obtain the network bandwidth size, calculate the real-time network bandwidth utilization rate of the internet of things device, and the specific implementation mode is as follows:
monitoring network card iftop-ibr 0-n;
network bandwidth usage = real-time traffic data size/network bandwidth;
the monitoring process periodically performs:
i. network bandwidth usage information monitoring is performed every 60s, and data is written into a tmp/resource file
And ii, reading the residual memory usage information every 60s, and writing the residual memory usage information into the file.
Step 2, determining a data transmission strategy according to the resource information, wherein the data transmission strategy comprises the following steps:
determining the current network resource state according to the network bandwidth use condition:
when the network bandwidth utilization rate is less than 50%, the network resource is in a sufficient state, and the transmission of evidence obtaining data is not affected at the moment, and data caching and data deduplication are not performed;
the network bandwidth utilization rate is in a network resource tension state when the network bandwidth utilization rate is more than or equal to 50% and less than 80%, and the evidence obtaining data is subjected to duplication removal processing;
when the network bandwidth utilization rate is greater than or equal to 80%, the network resource is in an insufficient state, the evidence obtaining data is subjected to duplication removal, the duplicated data is written into a data buffer area, and the data is sent out when the network resource is in a sufficient state;
as an extreme case, when both network resources and memory resources are exhausted, the process of data evidence collection and transmission can be considered to be suspended, the user is guaranteed to use the internet of things equipment without sense preferentially, only the monitoring process is reserved, and when the equipment resources are sufficient, the relevant process is awakened.
And step 3, transmitting data according to the data transmission strategy.
Wherein, step 1 further includes: detecting completion of electronic evidence obtaining, checking evidence obtaining data, and confirming that the data is complete; and periodically reading network card information and memory information of the Internet of things equipment, and calculating network bandwidth use conditions and memory use conditions, wherein the network bandwidth use conditions comprise network bandwidth size and network bandwidth use rate, and the memory use conditions comprise residual memory space size and memory space use rate.
Wherein the periodic reading is set to read once every 60 seconds;
when the buffer area is set, setting the size of the buffer area to be 80% of the residual memory space when the memory utilization rate is lower than 50%; when the memory usage rate is greater than or equal to 50% and less than 80%, setting the buffer Size to size= (net_i =70++net_a =30%) ×m; the current network bandwidth utilization rate of net_i, net_a, and m are the last acquired network bandwidth utilization rate and the residual memory space.
Wherein, the data deduplication includes: performing inverted index analysis on the evidence obtaining data, marking data records with high occurrence frequency in the evidence obtaining data in adjacent time, reserving a first data record, and discarding other repeated data records;
the data deduplication refers to that in the evidence obtaining process, a plurality of repeated data exist, and the obtained data is completely transmitted only under the condition that network resources are sufficient and cannot be triggered. When network resources are scarce or scarce, the data is deduplicated prior to transmission, and the deduplication site may optionally be in a buffer or other storage area.
Under normal conditions, the network data has a certain space-time correlation, that is, the data sent before and after a certain time point may have a certain correlation or repetition, for example, an http web page is accessed once, during the access period, a plurality of URL requests exist for the same domain name, and only one of the URL requests can be taken as evidence obtaining basis.
When the memory space is insufficient, the adjacent time range can be considered to be enlarged, the data deduplication ratio is increased, and the maximum expansion can be achieved in the whole buffer area range.
The data record in the evidence obtaining data is provided with a time stamp, and the time stamp represents the evidence obtaining time of the data record; the adjacent time is calculated according to the time stamp of the data record in the evidence obtaining data, and the range of the adjacent time is set to be 300-3000 seconds;
when the memory space utilization rate is higher than 80%, the range of the adjacent time is enlarged, and the data deduplication ratio is improved.
After the data is transmitted, the data buffer area is emptied.
The invention also provides a device for transmitting the data of the Internet of things, which comprises:
the resource acquisition module is used for acquiring resource information of the Internet of things equipment after the completion of the electronic evidence acquisition is detected; the resource information comprises network bandwidth use information and memory use information of the Internet of things equipment;
and the transmission strategy module is used for determining a data transmission strategy according to the resource information, wherein the data transmission strategy comprises the following steps:
determining the current network resource state according to the network bandwidth use condition:
when the network bandwidth utilization rate is less than 50%, the network resource is in a sufficient state, and the transmission of evidence obtaining data is not affected at the moment, and data caching and data deduplication are not performed;
when the network bandwidth utilization rate is more than 50% and less than 80%, the network bandwidth utilization rate is in a network resource tension state, and the evidence obtaining data is subjected to duplication removal processing;
when the network bandwidth utilization rate is more than 80%, the network resource is in an insufficient state, the evidence obtaining data is subjected to duplication removal, the duplicated data is written into a data buffer area, and the data is sent out when the network resource is in a sufficient state;
and the data transmission module is used for transmitting data according to the data transmission strategy.
Wherein, the resource acquisition module further comprises: detecting completion of electronic evidence obtaining, checking evidence obtaining data, and confirming that the data is complete; and periodically reading network card information and memory information of the Internet of things equipment, and calculating network bandwidth use conditions and memory use conditions, wherein the network bandwidth use conditions comprise network bandwidth size and network bandwidth use rate, and the memory use conditions comprise residual memory space size and memory space use rate.
Wherein the periodic reading is set to read once every 60 seconds;
when the buffer is set, setting the buffer Size as size= (net_i is 70% + net_a is 30%). M; the current network bandwidth utilization rate of net_i, net_a, and m are the last acquired network bandwidth utilization rate and the residual memory space.
Wherein, the data deduplication module includes: performing inverted index analysis on the evidence obtaining data, marking data records with high occurrence frequency in the evidence obtaining data in adjacent time, reserving a first data record, and discarding other repeated data records;
the data record in the evidence obtaining data is provided with a time stamp, and the time stamp represents the evidence obtaining time of the data record; the adjacent time is calculated according to the time stamp of the data record in the evidence obtaining data, and the range of the adjacent time is set to be 300-3000 seconds;
when the memory space utilization rate is higher than 80%, the range of the adjacent time is enlarged, and the data deduplication ratio is improved.
After the data is transmitted, the data buffer area is emptied.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (8)
1. A transmission method of data of the Internet of things comprises the following steps:
step 1, after detecting that electronic evidence obtaining is completed, acquiring resource information of the Internet of things equipment; the resource information comprises network bandwidth use information and memory use information of the Internet of things equipment;
step 2, determining a data transmission strategy according to the resource information, wherein the data transmission strategy comprises the following steps:
determining the current network resource state according to the network bandwidth use condition:
when the network bandwidth utilization rate is less than 50%, the network resource is in a sufficient state, and the transmission of evidence obtaining data is not affected at the moment, and data caching and data deduplication are not performed;
the network bandwidth utilization rate is in a network resource tension state when the network bandwidth utilization rate is more than or equal to 50% and less than 80%, and the evidence obtaining data is subjected to duplication removal processing;
when the network bandwidth utilization rate is greater than or equal to 80%, the network resource is in an insufficient state, the evidence obtaining data is subjected to duplication removal, the duplicated data is written into a data buffer area, and the data is sent out when the network resource is in a sufficient state;
step 3, transmitting data according to the data transmission strategy;
wherein, step 1 further includes: detecting completion of electronic evidence obtaining, checking evidence obtaining data, and confirming that the data is complete; periodically reading network card information and memory information of the Internet of things equipment, and calculating network bandwidth use conditions and memory use conditions, wherein the network bandwidth use conditions comprise network bandwidth size and network bandwidth use rate, and the memory use conditions comprise residual memory space size and memory space use rate;
when the buffer area is set, setting the size of the buffer area to be 80% of the residual memory space when the memory utilization rate is lower than 50%; when the memory usage rate is greater than or equal to 50% and less than 80%, setting the buffer Size to size= (net_i =70++net_a =30%) ×m; the network bandwidth utilization rate of net_i is the network bandwidth utilization rate acquired last time, and m is the size of the residual memory space;
data deduplication includes: performing inverted index analysis on the evidence obtaining data, marking data records with high occurrence frequency in the evidence obtaining data in adjacent time, reserving a first data record, and discarding other repeated data records; the data record in the evidence obtaining data is provided with a time stamp, and the time stamp represents the evidence obtaining time of the data record; the adjacent time is calculated according to the time stamp of the data record in the evidence obtaining data, and the range of the adjacent time is set to be 300-3000 seconds; when the utilization rate of the memory space is higher than 80%, the range of the adjacent time is enlarged, and the data duplication eliminating proportion is improved.
2. The method of claim 1, wherein the periodic reading is set to read every 60 seconds.
3. The method of claim 1, wherein the data buffer is emptied after transmitting the data.
4. A transmission device for internet of things data, comprising:
the resource acquisition module is used for acquiring resource information of the Internet of things equipment after the completion of the electronic evidence acquisition is detected; the resource information comprises network bandwidth use information and memory use information of the Internet of things equipment;
and the transmission strategy module is used for determining a data transmission strategy according to the resource information, wherein the data transmission strategy comprises the following steps:
determining the current network resource state according to the network bandwidth use condition:
when the network bandwidth utilization rate is less than 50%, the network resource is in a sufficient state, and the transmission of evidence obtaining data is not affected at the moment, and data caching and data deduplication are not performed;
when the network bandwidth utilization rate is more than 50% and less than 80%, the network bandwidth utilization rate is in a network resource tension state, and the evidence obtaining data is subjected to duplication removal processing;
when the network bandwidth utilization rate is more than 80%, the network resource is in an insufficient state, the evidence obtaining data is subjected to duplication removal, the duplicated data is written into a data buffer area, and the data is sent out when the network resource is in a sufficient state;
the data transmission module is used for transmitting data according to the data transmission strategy;
wherein, the resource acquisition module further comprises: detecting completion of electronic evidence obtaining, checking evidence obtaining data, and confirming that the data is complete; periodically reading network card information and memory information of the Internet of things equipment, and calculating network bandwidth use conditions and memory use conditions, wherein the network bandwidth use conditions comprise network bandwidth size and network bandwidth use rate, and the memory use conditions comprise residual memory space size and memory space use rate;
when the buffer is set, setting the buffer Size as size= (net_i is 70% + net_a is 30%). M; the network bandwidth utilization rate of net_i is the network bandwidth utilization rate acquired last time, and m is the size of the residual memory space;
the data deduplication module comprises: performing inverted index analysis on the evidence obtaining data, marking data records with high occurrence frequency in the evidence obtaining data in adjacent time, reserving a first data record, and discarding other repeated data records; the data record in the evidence obtaining data is provided with a time stamp, and the time stamp represents the evidence obtaining time of the data record; the adjacent time is calculated according to the time stamp of the data record in the evidence obtaining data, and the range of the adjacent time is set to be 300-3000 seconds; when the utilization rate of the memory space is higher than 80%, the range of the adjacent time is enlarged, and the data duplication eliminating proportion is improved.
5. The apparatus of claim 4, wherein the periodic reading is set to read every 60 seconds.
6. The apparatus of claim 4, wherein the data buffer is emptied after transmitting the data.
7. A transmission device for internet of things data, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the transmission method for internet of things data according to any one of claims 1-3 when executing the program.
8. A computer-readable storage medium storing computer-executable instructions for performing the internet of things data transmission method according to any one of claims 1 to 3.
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