CN108833380A - The method of data exchange between a kind of system the superior and the subordinate platform - Google Patents
The method of data exchange between a kind of system the superior and the subordinate platform Download PDFInfo
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- CN108833380A CN108833380A CN201810548914.XA CN201810548914A CN108833380A CN 108833380 A CN108833380 A CN 108833380A CN 201810548914 A CN201810548914 A CN 201810548914A CN 108833380 A CN108833380 A CN 108833380A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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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
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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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
- H04L67/14—Session management
- H04L67/143—Termination or inactivation of sessions, e.g. event-controlled end of session
- H04L67/145—Termination or inactivation of sessions, e.g. event-controlled end of session avoiding end of session, e.g. keep-alive, heartbeats, resumption message or wake-up for inactive or interrupted session
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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]
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Abstract
The invention discloses the methods of data exchange between a kind of system the superior and the subordinate platform, including：Using TCP Client server-side mode as mode between the superior and the subordinate's platform；The superior and the subordinate's platform all includes packing assembly, transmission group valence, receiving unit, extraction assembly, crypting component, packet parsing component, storage assembly；Wherein, packing assembly is used for assembled message, sending assembly passes through message after network transmission encryption, receiving unit is used for receiving network data, extraction assembly message after extracting encryption in network data, for crypting component for encrypting or decrypting message, packet parsing component parses message after decryption, and storage assembly is for the message after storing and resolving into database.The present invention solves the problems, such as ununified method for interchanging data between system the superior and the subordinate platform, improves reliability, stability, the real-time of data exchange between system the superior and the subordinate platform.
Description
Technical field
The invention belongs to data exchanges between Internet data transmission technical field more particularly to a kind of system the superior and the subordinate platform
Method.
Background technique
Now with the development of Internet of Things, various vehicles are fitted with GPS satellite positioning device, and various management platforms are received
The location data of management vehicle belonging to collection, such as taxi platform collect the position data of managed taxi, and bus is flat
Platform collects the position data of managed bus.But none unified side of the data exchange between system the superior and the subordinate platform
Method, can not effectively realize data sharing, and location data has the characteristics that data volume is big, strong real-time, and usual vehicle is per several
Second a position will be reported, more stringent requirements are proposed to data transmission for this, and common TCP, Http agreement can not all expire
Sufficient demand.As it can be seen that the method how to establish a unified data exchange between system the superior and the subordinate platform, is to realize location data
Shared difficulties.
Summary of the invention
In order to overcome the defects of the prior art described above, the present invention provides the side of data exchange between a kind of system the superior and the subordinate platform
Method solves the problems, such as ununified method for interchanging data between system the superior and the subordinate platform, improves between system the superior and the subordinate platform
Reliability, stability, the real-time of data exchange.
To achieve the above object, the present invention uses following technical scheme, including：
The method of data exchange between a kind of system the superior and the subordinate platform uses TCP Client service between the superior and the subordinate's platform
End mode is as mode；The superior and the subordinate's platform all include packing assembly, transmission group valence, receiving unit, extraction assembly,
Crypting component, packet parsing component, storage assembly；TCP Client is the side in the superior and the subordinate's platform as data sending terminal,
TCP server-side is the side in the superior and the subordinate's platform as data receiver；This approach includes the following steps：
Data to be sent are assembled into message by the packing assembly of S1, TCP Client；
The message after assembly is encrypted in the crypting component of S2, TCP Client；
S3, the sending assembly of TCP Client are sent to the reception group of TCP server-side to encrypted message by network
Part；
The receiving unit of S4, TCP server-side receives the network data that TCP Client is sent；
The extraction assembly of S5, TCP server-side extracts encrypted message from network data；
Encrypted message is decrypted in the crypting component of S6, TCP server-side；
The packet parsing component of S7, TCP server-side carries out dissection process to the message after decryption；
S8, TCP server-side storage assembly store the result data after parsing into database.
In step S1, the message structure is the leader knowledge being sequentially connected, data head, data volume, CRC check code, tail tag
Know；Head is identified as character 0x5b, and tail is identified as character 0x5d, and carries out escape judgement to the data volume of message；The superior and the subordinate's platform
Between the data flow of data exchange follow the network byte order of big end rule compositor mode, i.e. high byte is preceding, and low byte is rear.
The escape judgment rule is：If occurring character 0x5b in data volume, character 0x5a0x01 need to be replaced with；If
Character 0x5a is occurred in data volume, need to replace with character 0x5a0x02；If occurring character 0x5d in data volume, need to replace
It is changed to character 0x5e0x01；If occurring character 0x5e in data volume, character 0x5e0x02 need to be replaced with；The escape judgement
Character 0x5b in data volume is distinguished with leader knowledge, and the character 0x5d in data volume is known with tail tag and carries out area
Point.
In step S2, described to be encrypted as carrying out data encryption to the data body portion of message, the crypting component is random
Key is generated, different messages is encrypted using different keys, and key generates one section of bytecode, is pseudo noise code, data
Encryption Algorithm is that the data of data body portion to be transmitted and pseudo noise code are carried out XOR operation by byte.
Wherein, algorithm is as follows：
Coast unsigned uint32 t M 1=A；
Coast unsigned unint32_t IA 1=B；
Coast unsigned unint32_ t IC1=C；
Void encrypt(uint32_ t key,unsigned char`buffer,uint32_t size)
{
Uint32_t idx=0；
If (key==0)
Key=1；
while(idx<size)
{
Key=I A 1 } ` (key%M1)+ICI；
Buffer [idx++] ^=(unsigned char) ((key>>20)&0xFF)；
}
}
In step S3, key and message are sent jointly to TCP service by network by the sending assembly of the TCP Client
The receiving unit at end, TCP server-side crypting component are decrypted by the key pair message.
In step S3, two virtual channels based on Transmission Control Protocol are established by network between the superior and the subordinate's platform, wherein make
Virtual channel constructed by data is sent to the superior platforms as TCP server-side for junior's platform of TCP Client, is main chain
Road；Superior platforms as TCP Client send virtual channel constructed by data to junior's platform as TCP server-side,
For from link.
The primary link and from link be two-way virtual channel；When the primary link and from all normal feelings of link connection
Under condition, primary link and from link be unidirectional data transmission；When the primary link or when from a link wherein link down, separately
One link then switchs to bi-directional transfer of data, and the link that all data all pass through this bi-directional transfer of data is transmitted；Work as interruption
Link-recovery when, system continues to work according to primary link and from the transmission mode that link is unidirectional data transmission.
In step S6, the packet parsing component of the TCP server-side carries out the data head and data volume of message after decryption
CRC, which is calculated, generates new CRC check code, and the message that TCP Client is sent includes CRC check code, by comparing TCP Client
The CRC check code and TCP server-side of transmission calculate the new CRC check code generated and judge that data are passing if comparison is inconsistent
Transformation of data has occurred during defeated, TCP Client can retransmit data and give TCP server-side at this time.
It, should be every one link of transmission in 1 minute between the superior and the subordinate's platform when not carrying out data transmission between the superior and the subordinate's platform
Heartbeat packet is kept, link connection state is detected.
The advantage of the invention is that：
(1) transmission method of efficient stable is provided between the data exchange system the superior and the subordinate platform.
(2) data exchange of the design structure of message between platform provides Reliability Assurance.
(3) escape judgement is carried out to the data volume of message, and escape judgment rule of the present invention ensure that and identify end to end only
One property.
(4) it is encrypted to the data body portion of message using key and by Encryption Algorithm, the peace of improve data transfer
Quan Xing.
(5) it establishes primary link and from link, all data improves data biography by primary link and from link one-way transmission
Defeated efficiency.
(6) when primary link or when from a link wherein interruption, all data carry out transmitted in both directions by another link,
It solves the problems, such as the disconnecting occurred in data transmission, improves the stability of data transmission.
(7) using the error detection in the verification data transmission of CRC cyclic redundancy check, inspection data is in transmission process
No deformation can retransmit data if transformation of data occurs, and solve the problems, such as the transformation of data occurred in data transmission.
(8) in such a way that transmission link keeps heartbeat packet, link connection state is detected, maintenance communication link is stablized.
Detailed description of the invention
The method flow diagram of Fig. 1 method for interchanging data between a kind of system the superior and the subordinate platform.
Fig. 2 primary link and method flow diagram from link establishment between a kind of system the superior and the subordinate platform.
The architecture diagram of Fig. 3 data exchange between a kind of system the superior and the subordinate platform.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, between a kind of system the superior and the subordinate platform data exchange method, include the following steps：
S1 establishes two virtual channels based on Transmission Control Protocol by network between the superior and the subordinate's platform, is primary link and from chain
Road, junior's platform as TCP Client send data to the superior platforms by main chain road direction as TCP server-side；As
The superior platforms of TCP Client send data to by junior's platform from chain road direction as TCP server-side；
Data to be sent are assembled into message by the packing assembly of S2, TCP Client, and message structure is the head being sequentially connected
Mark, data head, data volume, CRC check code, tail tag are known, and carry out escape judgement to data volume；
The crypting component of S3, TCP Client generate key at random, generate pseudo noise code further according to key；
S4, TCP Client crypting component encrypt data body portion, by the data of data body portion to be transmitted
XOR operation is carried out by byte with pseudo noise code；
S5, the sending assembly of TCP Client is by network, i.e., by primary link or from link by encrypted message and close
Key is sent to the receiving unit of TCP server-side；
The receiving unit of S6, TCP server-side receives the link data that TCP Client is sent；
The extraction assembly of S7, TCP server-side extracts encrypted message and key from link data；
The crypting component of S8, TCP server-side is decrypted by the encryption message that the key pair extracted is extracted；
The packet parsing component of S9, TCP server-side carries out CRC calculating to the data head and data body portion of message after decryption
Generate new CRC check code；
S10 judges that calculating TCP server-side calculates the CRC check code that the new CRC check code generated and TCP Client are sent
It is whether consistent, if so, TCP server-side storage assembly stores the result data after parsing into database；If it is not, then data
It deforms, executes step S11；
S11, TCP server-side send transformation of data message to TCP Client；
S12, TCP client list receive transformation of data message, carry out re-transmission data, re-execute the steps S2.
In step S1, as shown in Fig. 2, establishing primary link and the method from link between the superior and the subordinate's platform, include the following steps：
S101, superior platforms start TCP service, junior's platform request are waited to establish connection, and superior platforms are to junior's platform
The service IP address and port numbers of superior platforms are provided, while it is junior's platform that superior platforms, which provide superior platforms to junior's platform,
User name, password and the access code of distribution；
S102, junior's platform start TCP service, the service IP for the superior platforms that junior's platform is provided by superior platforms
Location and port numbers, superior platform send request and establish primary link；
S103, superior platforms verify junior's platform user name, password and access code, if be superior platforms be junior put down
User name, password and the access code of platform distribution, if it is not, thening follow the steps S104；Otherwise, primary link success is established, step is executed
Rapid S105；
S104 disconnects request connection, re-execute the steps S101；
S105, in the case where primary link is successfully established, junior's platform sends the clothes of junior's platform by primary link superior platform
IP address of being engaged in and port numbers；
S106, the service IP address and port numbers of junior's platform that superior platforms are sent by junior's platform are established from chain
Road.
Wherein, when not carrying out data transmission between the superior and the subordinate's platform, by primary link and from link between the superior and the subordinate's platform
A link was sent every 1 minute and keeps heartbeat packet, detected link connection state.
In step S2, as shown in table 1, message structure is the leader knowledge being sequentially connected, data head, data volume, CRC check
Code, tail tag are known.Wherein, leader knows heading for identification；Data head message attribute for identification；Data volume includes specifically to pass
Defeated data；CRC check code is used for checking prediction message, i.e. mistake in the transmission of verification data；Tail tag knows message trailer for identification.
| Heldflag | Leader is known |
| MessageHeader | Data head |
| MessageBody | Data volume |
| CRCCode | CRC check code |
| EndFlag | Tail tag is known |
Table 1
In step S2, the rule of escape judgement is：If occurring character 0x5b in data volume, character need to be replaced with
0x5a0x01；If occurring character 0x5a in data volume, character 0x5a0x02 need to be replaced with；If occurring character in data volume
0x5d's, character 0x5e0x01 need to be replaced with；If occurring character 0x5e in data volume, character 0x5e0x02 need to be replaced with.
In step S4, Encryption Algorithm is：
Coast unsigned uint32 t M 1=A；
Coast unsigned unint32_t IA 1=B；
Coast unsigned unint32_ t IC1=C；
Void encrypt(uint32_ t key,unsigned char`buffer,uint32_ t size)
{
Uint32_t idx=0；
If (key==0)
Key=1；
while(idx<size)
{
Key=I A 1 } ` (key%M1)+ICI；
Buffer [idx++] ^=(unsigned char) ((key>>20)&0xFF)；
}
}
As shown in figure 3, between a kind of system the superior and the subordinate platform data exchange architecture diagram, the superior and the subordinate's platform all includes
Packing assembly 1, transmission group valence 2, receiving unit 3, extraction assembly 4, crypting component 5, packet parsing component 6, storage assembly 7.
Wherein, packing assembly 1 is used for assembled message；Message encrypts after 5 pairs of assembly of crypting component；Sending assembly 2
Message and key after encrypting are sent by network；Receiving unit 3 is used for receiving network data；Extraction assembly 4 is from network data
Extract message and key after encrypting；Crypting component 5 is also decrypted message after encryption；6 pairs of packet parsing component decryption
Message is parsed afterwards；Message is into database after storage assembly 7 is used for storing and resolving.
The above is only the preferred embodiments of the invention, are not intended to limit the invention creation, all in the present invention
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the invention within the spirit and principle of creation
Within the scope of shield.
Claims (9)
1. the method for data exchange between a kind of system the superior and the subordinate platform, which is characterized in that using TCP visitor between the superior and the subordinate's platform
Family end server-side mode is as mode；The superior and the subordinate's platform all include packing assembly, transmission group valence, receiving unit,
Extraction assembly, crypting component, packet parsing component, storage assembly；TCP Client is to send in the superior and the subordinate's platform as data
One side at end, TCP server-side are the side in the superior and the subordinate's platform as data receiver；This approach includes the following steps：
Data to be sent are assembled into message by the packing assembly of S1, TCP Client；
The message after assembly is encrypted in the crypting component of S2, TCP Client；
S3, the sending assembly of TCP Client are sent to the receiving unit of TCP server-side to encrypted message by network；
The receiving unit of S4, TCP server-side receives the network data that TCP Client is sent；
The extraction assembly of S5, TCP server-side extracts encrypted message from network data；
Encrypted message is decrypted in the crypting component of S6, TCP server-side；
The packet parsing component of S7, TCP server-side carries out dissection process to the message after decryption；
S8, TCP server-side storage assembly store the result data after parsing into database.
2. the method for data exchange between a kind of system the superior and the subordinate platform according to claim 1, which is characterized in that step S1
In, the message structure is the leader knowledge being sequentially connected, data head, data volume, CRC check code, tail tag knowledge；Head is identified as character
0x5b, tail is identified as character 0x5d, and carries out escape judgement to the data volume of message；The data of data exchange between the superior and the subordinate's platform
Stream follows the network byte order of big end rule compositor mode, i.e. high byte is preceding, and low byte is rear.
3. the method for data exchange between a kind of system the superior and the subordinate platform according to claim 2, which is characterized in that described turn
Adopted judgment rule is：If occurring character 0x5b in data volume, character 0x5a0x01 need to be replaced with；If being occurred in data volume
Character 0x5a's, character 0x5a0x02 need to be replaced with；If occurring character 0x5d in data volume, character need to be replaced with
0x5e0x01；If occurring character 0x5e in data volume, character 0x5e0x02 need to be replaced with；The escape judges data volume
In the knowledge of character 0x5b and leader distinguish, and by data volume character 0x5d and tail tag know and distinguish.
4. the method for data exchange between a kind of system the superior and the subordinate platform according to claim 2, which is characterized in that step S2
In, described to be encrypted as carrying out data encryption to the data body portion of message, the crypting component generates key at random, different
Message is encrypted using different keys, and key generates one section of bytecode, is pseudo noise code, data encryption algorithm is will be to be passed
The data and pseudo noise code of defeated data body portion carry out XOR operation by byte.
5. the method for data exchange between a kind of system the superior and the subordinate platform according to claim 4, which is characterized in that step S3
In, key and message are sent jointly to the receiving unit of TCP server-side by network by the sending assembly of the TCP Client,
TCP server-side crypting component is decrypted by the key pair message.
6. the method for data exchange between a kind of system the superior and the subordinate platform according to claim 1, which is characterized in that step S3
In, two virtual channels based on Transmission Control Protocol are established by network between the superior and the subordinate's platform, wherein as under TCP Client
Grade platform sends virtual channel constructed by data to the superior platforms as TCP server-side, is primary link；As TCP client
The superior platforms at end send virtual channel constructed by data to junior's platform as TCP server-side, are from link.
7. the method for data exchange between a kind of system the superior and the subordinate platform according to claim 6, which is characterized in that the master
Link and from link be two-way virtual channel；When the primary link and in all normal situation of link connection, primary link and
It is unidirectional data transmission from link；When the primary link or when from a link wherein link down, another link then turns
For bi-directional transfer of data, the link that all data all pass through this bi-directional transfer of data is transmitted；When the link-recovery of interruption,
System continues to work according to primary link and from the transmission mode that link is unidirectional data transmission.
8. the method for data exchange between a kind of system the superior and the subordinate platform according to claim 2, which is characterized in that step S6
In, the packet parsing component of the TCP server-side carries out CRC calculating to the data head and data volume of message after decryption and generates newly
CRC check code, and the message that TCP Client is sent includes CRC check code, the CRC check code sent by comparison TCP Client
The new CRC check code generated, which is calculated, with TCP server-side judges that data have occurred in transmission process if comparison is inconsistent
Transformation of data, TCP Client can retransmit data and give TCP server-side at this time.
9. the method for data exchange between a kind of system the superior and the subordinate platform according to claim 1, which is characterized in that when upper and lower
A link should be sent every 1 minute when not carrying out data transmission between grade platform, between the superior and the subordinate's platform keeps heartbeat packet, detection
Link connection state.
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| CN109617958A (en) * | 2018-12-06 | 2019-04-12 | 浙江大学宁波理工学院 | The transmission method and system of a kind of vegicle recorder data between platform |
| CN110602053A (en) * | 2019-08-20 | 2019-12-20 | 华能四川水电有限公司 | Application process non-inductive kernel layer encryption and decryption system and method |
| CN110602053B (en) * | 2019-08-20 | 2022-05-13 | 华能四川能源开发有限公司 | Application process non-inductive kernel layer encryption and decryption system and method |
| CN112104596A (en) * | 2020-06-29 | 2020-12-18 | 南斗六星系统集成有限公司 | Data access method and system for aggregating multiple Internet of vehicles communication protocols |
| CN112104596B (en) * | 2020-06-29 | 2022-10-25 | 南斗六星系统集成有限公司 | Data access method and system for aggregating multiple Internet of vehicles communication protocols |
| CN112184926A (en) * | 2020-09-14 | 2021-01-05 | 南京通用电器有限公司 | Method and device for preventing counter cheating based on dynamic change encryption data packet |
| CN112184926B (en) * | 2020-09-14 | 2022-11-04 | 南京通用电器有限公司 | Method and device for preventing counter cheating based on dynamic change encryption data packet |
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Application publication date: 20181116 |