CN115022251B - Bidirectional message receiving and transmitting control method between information systems - Google Patents
Bidirectional message receiving and transmitting control method between information systems Download PDFInfo
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- CN115022251B CN115022251B CN202210625133.2A CN202210625133A CN115022251B CN 115022251 B CN115022251 B CN 115022251B CN 202210625133 A CN202210625133 A CN 202210625133A CN 115022251 B CN115022251 B CN 115022251B
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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
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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
- H04L47/31—Flow control; Congestion control by tagging of packets, e.g. using discard eligibility [DE] bits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/80—Actions related to the user profile or the type of traffic
- H04L47/806—Broadcast or multicast traffic
Abstract
The application discloses a method for controlling bi-directional message receiving and transmitting between information systems. The information system establishes a receiving and transmitting control rule table of each message aiming at each interconnection information system. When the information system sends a message to a certain destination information system, checking a receiving and transmitting control table, and if the rule allows the message to be sent, immediately sending the message to the destination information system; if transmission is prohibited, the message is immediately discarded. When the information system receives a message from a source information system, checking a receiving and transmitting control table, and if the rule allows the message to be received, receiving the message and distributing the message to an upper layer application; if the forwarding is allowed, immediately forwarding to a direct-connected system; otherwise, the message is immediately discarded. By the bidirectional message receiving and transmitting control method, on one hand, the receiving and transmitting of the message can be accurately controlled at any time according to the actual requirements of the system, and the receiving and transmitting ends can bidirectionally control the message, so that the method is more reliable and safer, and no misoperation exists; on the other hand, the message transmission quantity on the communication link can be reduced, and the message processing quantity of an upper layer application can be reduced.
Description
Technical Field
The application relates to a message receiving and transmitting control method, in particular to a bidirectional message receiving and transmitting control method between information systems.
Background
At present, the conventional information system does not have the capability of receiving and transmitting control for each message, the receiving and transmitting control for the message is built in a transmission module (generally, an information system with a given function performance and receiving and transmitting relations with other information systems are considered to be stable), and in the use process, if the receiving and transmitting control of the message needs to be changed, the receiving and transmitting control of the message needs to be modified, the receiving and transmitting control of the message needs to be compiled and updated again, and the receiving and transmitting control of the message is complex, low-efficiency and low in operability. In many practical applications, it is necessary to change some message transceiving rules in real time, for example, an abnormality occurs in an information system, and a message is continuously sent to an external system, at this time, if the system has a transceiving control capability for each message, the external sending of the message is directly prohibited or the receiving end of the message is prohibited, so that abnormal messages can be immediately shielded, and stable operation of the information system is ensured.
Disclosure of Invention
The application aims to: the application aims to solve the technical problem of providing a method for controlling bi-directional message receiving and transmitting among information systems aiming at the defects of the prior art.
In order to solve the technical problems, the application discloses a method for controlling bi-directional message receiving and transmitting between information systems, which comprises the following steps:
step 1, creating a receiving and transmitting control rule table of each message for each directly connected information system; the information system comprises a receiving and transmitting rule configuration module and an information transmission module;
step 2, when the information system sends a message to the destination information system, checking a receiving and transmitting control table, and if the rule allows the message to be sent, immediately sending the message to the destination information system; if the transmission is forbidden, immediately discarding the message;
step 3, when the information system receives the message from the source information system, checking the receiving and transmitting control table, if the rule allows the message to be received, receiving the message and distributing the message to the upper layer application; checking a receiving and transmitting control table, sequentially checking all system control words except a source end system, and immediately forwarding to a directly connected system if forwarding is allowed; otherwise, immediately discarding the message;
step 4, when the receiving and transmitting rule configuration module in the information system changes the receiving and transmitting rule of the message, the information transmission module is immediately notified; the information transmission module reloads the message receiving and transmitting control rule table; and carrying out receiving and transmitting control on the message according to the new message receiving and transmitting control rule table.
The transceiving control rule in the step 1 of the application comprises the following steps: t is sent, R is received and F is forwarded;
wherein, T represents that the message is generated by the system and is allowed to be sent to other destination systems;
r represents that the message is allowed to be received from the source end system;
f indicates that the message comes from other systems than the destination system and is allowed to be forwarded to the destination system.
The method for creating the transceiving control rule table of each message for each direct-connection information system in the step 1 of the application comprises the following steps:
a number, namely 1 byte, is used for representing a message to send and receive control rules of a certain system, namely TRF rules;
bit 0 indicates a transmit T rule, bit 1 indicates a receive R rule, and bit 2 indicates a forward F rule;
for each bit, a 1 indicates enable and a 0 indicates disable;
and establishing a receiving and transmitting control rule table, wherein the row title is a message number, the column title is an information system number, and the numbers of the row-column crossing points represent the corresponding receiving and transmitting control rule words, namely control words.
In step 2 of the present application, the message control method when the information system sends a message to a destination information system includes:
and 2-1, checking the destination system information in the message, checking the transceiving control word of the message aiming at the system if the destination system information exists in the message, and immediately transmitting the message to the destination information system if the rule allows transmission.
Step 2-2, checking the destination system information in the message, if no destination system information exists in the message, representing broadcast messages, checking control words of the message aiming at other systems one by one, and if the rule allows transmission, immediately transmitting the message to the system; checking one by one until all the systems configured in the receiving and transmitting control rule table are processed.
Step 2-3, if the conditions described in step 2-1 and step 2-2 are not satisfied, indicating that the message should not be sent, discarding the message immediately.
In step 3 of the present application, the message control method when the information system receives a message from a source information system includes:
and 3-1, checking the transceiving control word of the message relative to the source terminal system, and if the rule allows the message to be received, receiving the message and distributing the message to an upper layer application.
And 3-2, checking the destination system information indicated in the message, if the destination system information exists in the message, checking the transceiving control word of the message to the destination system, and if the forwarding is allowed, immediately forwarding to the destination system.
Step 3-3, checking the destination system information indicated in the message, if no destination system information exists, representing broadcast messages, checking control words of all the messages relative to a non-source system one by one, and if forwarding is allowed, immediately forwarding; checking one by one until all the systems configured in the receiving and transmitting control rule table are processed.
Step 3-4, if the conditions described in step 3-1, step 3-2 and step 3-3 are not satisfied, indicating that the message should not be received and forwarded, and immediately discarding the message.
The beneficial effects are that:
the application can control the sending of the message for each message at the source end system and the receiving of the message for each message at the destination end system by introducing TRF (transmission, reception and forwarding) control rules; meanwhile, through the setting of the F rule, not only can the broadcast message be automatically forwarded to the whole network, but also a forwarding relation can be established, and the source message is forwarded to a non-direct-connection destination system through an intermediate system (the F rule is particularly suitable for an information system with a superior-subordinate relation or mixed channel communication interconnection). The bidirectional message receiving and transmitting control method can accurately control the receiving and transmitting of the message at any time according to the actual requirements of the system, and is more reliable and safe due to bidirectional control of the receiving and transmitting end, and no misoperation exists; on the other hand, the message transmission quantity on the communication link can be reduced, and the message processing quantity of the upper layer application can be effectively reduced.
Drawings
The foregoing and/or other advantages of the application will become more apparent from the following detailed description of the application when taken in conjunction with the accompanying drawings and detailed description.
Fig. 1 is a schematic diagram of a transmit-receive control table provided in the present application.
Fig. 2 is a schematic diagram of a storage implementation of a transmit-receive control table provided by 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 application will be rendered by reference to the appended drawings and appended detailed description.
The embodiment of the application discloses a bidirectional message receiving and transmitting control method between information systems, which can control the sending of messages for each message at a source end system and the receiving of messages for each message at a destination end system by introducing TRF (transmission, reception and forwarding) control rules; meanwhile, through the setting of the F rule, not only can the broadcast message be automatically forwarded to the whole network, but also a forwarding relation can be established, and the source message is forwarded to a non-direct-connection destination system through an intermediate system (the F rule is particularly suitable for an information system with a superior-subordinate relation or mixed channel communication interconnection). The bidirectional message receiving and transmitting control method can accurately control the receiving and transmitting of the message at any time according to the actual requirements of the system, and is more reliable and safe due to bidirectional control of the receiving and transmitting end, and no misoperation exists; on the other hand, the message transmission quantity on the communication link can be reduced, and the message processing quantity of the upper layer application can be effectively reduced.
The embodiment of the application provides a method for controlling bi-directional message receiving and transmitting among information systems, which comprises the following steps:
step 1, creating a receiving and transmitting control rule table of each message aiming at each interconnection information system;
the transceiving control rules comprise three types: transmitting (T), receiving (R), forwarding (F). T: the message is generated by the system and can be sent to other destination systems; r: the message may be received from a source system; f: the message is from a system other than the headend system and can be forwarded to the headend system. The message transceiving control rule table is shown in fig. 1, wherein the row is entitled message number, the column is entitled information system number, the row-column intersection is the transceiving control rule of a message for a system, the rule is a combination of three rules of sending (T), receiving (R) and forwarding (F), and in total 8, T/R/F, T/R/-, T/-/F, -/R/-, -/-/F, -/-/- (-means prohibited), respectively. When in use, the rule determination is performed for each message operation (transmission, reception, forwarding).
When the method is implemented, a number (1 byte) is used for representing a TRF rule of a message for a certain system, the 0 th bit represents a T rule, the 1 st bit represents an R rule, and the 2 nd bit represents an F rule; for each bit, a 1 indicates enable and a 0 indicates disable; as shown in fig. 2, the transmit-receive control table stores an implementation schematic diagram, in which a line header is a message number, a column header is an information system number, and a number of a cross point of a line and a column represents a transmit-receive control rule word, hereinafter referred to as a control word.
The contents of fig. 1 and 2 correspond, and fig. 1 is directly expressed as TRF, meaning can be seen at a glance, fig. 2 belongs to a specific implementation, T/R/F, T/R/-, T/-/-, T/-/F, -/R/F, -/R/-/F, -/-/-/-, respectively, corresponds to 0x07,0x03,0x01,0x05,0x06,0x02,0x04,0x0. This is more evident when expressed in binary, such as T/R/F, and when expressed in specific implementations, bit 0, bit 1, and bit 2 are all 1, i.e., 0b00000111, and hexadecimal is 0x07.
Step 2, when the information system sends out the message, checking the receiving and transmitting control table, if the rule allows the message to be sent, immediately sending the message to the destination information system; if transmission is prohibited, the message is immediately discarded. Specifically, this step decomposes as follows:
step 2-1, checking a destination terminal system in the message, if the destination terminal system is clear in the message, checking a receiving and transmitting control word of the message for the system, and if the rule allows the message to be transmitted, immediately transmitting the message to a destination terminal information system;
in the implementation process, the determination of the control word transmission rule only needs to check the value of the first bit of the control word, specifically, only needs to perform "&" operation ("and" operation) on the control word with respect to 0x01 (0 b 00000001), and if the result is not 0, transmission is allowed, otherwise, transmission is forbidden.
Step 2-2, checking the destination system in the message, if the destination system is not clear in the message, representing the broadcast message, checking the control words of the message aiming at other systems one by one, and if the rule allows the transmission, immediately transmitting the message to the system; checking one by one until all configured systems are processed;
step 2-3, if the conditions are not satisfied, the message is not sent, and the message is immediately discarded;
step 3, when the information system receives the message from a source information system, checking the receiving and transmitting control table, if the rule allows the message to be received, receiving the message and distributing the message to an upper layer application; checking a receiving and transmitting control table, sequentially checking all system control words except a source end system, and immediately forwarding to a directly connected system if forwarding is allowed; otherwise, immediately discarding the message; specifically, this step decomposes as follows:
step 3-1, checking the receiving and transmitting control word of the message relative to the source terminal system, if the rule allows the receiving, receiving the message and distributing the message to the upper layer application;
in the implementation process, the determination of the control word receiving rule only needs to check the value of the second bit of the control word, specifically, only needs to perform an "&" operation ("and" operation) on the control word with respect to 0x02 (0 b 00000010), and if the result is not 0, the receiving is enabled, and otherwise, the receiving is disabled.
Step 3-2, checking the destination terminal system indicated in the message, if the message has an explicit destination terminal system, checking the receiving and transmitting control word of the message to the destination terminal system, and if the message is allowed to be transmitted, immediately transmitting the message to the destination terminal system;
in the implementation process, the decision of the control word forwarding rule only needs to check the value of the third bit of the control word, specifically, only needs to perform "&" operation ("AND" operation) on the control word aiming at 0x04 (0 b 00000100), if the result is not 0, the forwarding is allowed to the destination system, otherwise, the forwarding is forbidden.
Step 3-3, if the destination system indicated in the message does not have a definite destination system, the message is broadcasted, the control words of all the messages relative to the non-source system are checked one by one, and if the message is allowed to be forwarded, the message is forwarded immediately; checking one by one until all configured systems are processed;
step 3-4, if the conditions are not satisfied, the message is not received and forwarded, and the message is immediately discarded;
and 4, if the transceiving rule configuration module in the information system changes the transceiving rule of a certain message, immediately notifying the information transmission module, and reloading the message transceiving control rule table by the information transmission module to perform new message transceiving control.
In the implementation process, the step is simple to realize, but the visible advantage of the control method is that the method can dynamically change the receiving and transmitting control words of the message in the process of program operation, thereby realizing the on-demand change of the message receiving and transmitting rule, and particularly the capability of shielding abnormal messages. Specifically, if the system application can normally process an external message with the frequency of 1 second, but because the external system is abnormal, the result is continuously sent to the system according to 100000 times per second, if the system continuously processes the abnormal messages, the system load is greatly increased, so that the system cannot bear or even crashes, at the moment, the system only needs to set the control word of the message to be forbidden to receive (or set the control word of the message to be forbidden to send at the abnormal source end system), the abnormal messages are shielded immediately, the abnormal message processing amount of the system can be reduced, the load of a communication link can be reduced, and the high-efficiency and stable operation of the system is effectively ensured.
The application provides a bi-directional message receiving and transmitting control method between information systems, which can control the sending of messages for each message at a source end system and the receiving of messages for each message at a destination end system by introducing TRF (transmission, reception and forwarding) control rules; meanwhile, through the setting of the F rule, not only can the broadcast message be automatically forwarded to the whole network, but also a forwarding relation can be established, and the source message is forwarded to a non-direct-connection destination system through an intermediate system (the F rule is particularly suitable for an information system with a superior-subordinate relation or mixed channel communication interconnection). The bidirectional message receiving and transmitting control method can accurately control the receiving and transmitting of the message at any time according to the actual requirements of the system, and is more reliable and safe due to bidirectional control of the receiving and transmitting end, and no misoperation exists; on the other hand, the message transmission quantity on the communication link can be reduced, and the message processing quantity of the upper layer application can be effectively reduced. The system engineering practice proves that the application is a simple, efficient and reliable message transceiving control method, and for those skilled in the art, the bidirectional message transceiving control method can also make a plurality of improvements and modifications (for example, the establishment of transceiving control rules for response messages is increased) without departing from the spirit of the application, and the improvements and modifications are also considered as the protection scope of the application. The components not explicitly described in this embodiment can be implemented by using the prior art.
In a specific implementation, the present application provides a computer storage medium and a corresponding data processing unit, where the computer storage medium is capable of storing a computer program, where the computer program when executed by the data processing unit may operate the summary of the present application and part or all of the steps in each embodiment of the method for controlling bi-directional messaging between information systems provided by the present application. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a random-access memory (random access memory, RAM), or the like.
It will be apparent to those skilled in the art that the technical solutions in the embodiments of the present application may be implemented by means of a computer program and its corresponding general hardware platform. Based on such understanding, the technical solutions in the embodiments of the present application may be embodied essentially or in the form of a computer program, i.e. a software product, which may be stored in a storage medium, and include several instructions to cause a device (which may be a personal computer, a server, a single-chip microcomputer MUU or a network device, etc.) including a data processing unit to perform the methods described in the embodiments or some parts of the embodiments of the present application.
The application provides a thought and a method for controlling bi-directional messaging between information systems, and particularly provides a method and a way for realizing the technical scheme, the above is only a preferred embodiment of the application, and it should be noted that, for those skilled in the art, a plurality of improvements and modifications can be made without departing from the principle of the application, and the improvements and modifications should also be regarded as the protection scope of the application. The components not explicitly described in this embodiment can be implemented by using the prior art.
Claims (9)
1. A method for controlling bi-directional message receiving and transmitting between information systems is characterized by comprising the following steps:
step 1, creating a receiving and transmitting control rule table of each message for each directly connected information system; the information system comprises a receiving and transmitting rule configuration module and an information transmission module;
step 2, when the information system sends a message to the destination information system, checking a receiving and transmitting control table, and if the rule allows the message to be sent, immediately sending the message to the destination information system; if the transmission is forbidden, immediately discarding the message;
step 3, when the information system receives the message from the source information system, checking the receiving and transmitting control table, if the rule allows the message to be received, receiving the message and distributing the message to the upper layer application; checking a receiving and transmitting control table, sequentially checking all system control words except a source end system, and immediately forwarding to a directly connected system if forwarding is allowed; otherwise, immediately discarding the message;
step 4, when the receiving and transmitting rule configuration module in the information system changes the receiving and transmitting rule of the message, the information transmission module is immediately notified; the information transmission module reloads the message receiving and transmitting control rule table; transmitting and receiving the message according to the new message transmitting and receiving control rule table;
the transceiver control rule in step 1 includes: t is sent, R is received and F is forwarded;
wherein, T represents that the message is generated by the system and is allowed to be sent to other destination systems;
r represents that the message is allowed to be received from the source end system;
f indicates that the message comes from other systems than the destination system and is allowed to be forwarded to the destination system.
2. The method for controlling bi-directional messaging between information systems according to claim 1, wherein the method for creating a table of messaging control rules for each directly connected information system in step 1 comprises:
a number, namely 1 byte, is used for representing a message to send and receive control rules of a certain system, namely TRF rules;
bit 0 indicates a transmit T rule, bit 1 indicates a receive R rule, and bit 2 indicates a forward F rule;
for each bit, a 1 indicates enable and a 0 indicates disable;
and establishing a receiving and transmitting control rule table, wherein the row title is a message number, the column title is an information system number, and the numbers of the row-column crossing points represent the corresponding receiving and transmitting control rule words, namely control words.
3. The method for controlling bi-directional messaging between information systems according to claim 2, wherein in step 2, the message control method when the information system sends a message to a destination information system comprises:
and 2-1, checking the destination system information in the message, checking the transceiving control word of the message aiming at the system if the destination system information exists in the message, and immediately transmitting the message to the destination information system if the rule allows transmission.
4. The method for controlling bi-directional messaging between information systems according to claim 3, wherein in step 2, the message control method when the information system sends a message to a destination information system comprises:
step 2-2, checking the destination system information in the message, if no destination system information exists in the message, representing broadcast messages, checking control words of the message aiming at other systems one by one, and if the rule allows transmission, immediately transmitting the message to the system; checking one by one until all the systems configured in the receiving and transmitting control rule table are processed.
5. The method for controlling bi-directional messaging between information systems according to claim 4, wherein in step 2, the message control method when the information system sends a message to a destination information system comprises:
step 2-3, if the conditions described in step 2-1 and step 2-2 are not satisfied, indicating that the message should not be sent, discarding the message immediately.
6. The method for controlling bi-directional messaging between information systems according to claim 5, wherein in step 3, the message control method when the information system receives a message from a source information system comprises:
and 3-1, checking the transceiving control word of the message relative to the source terminal system, and if the rule allows the message to be received, receiving the message and distributing the message to an upper layer application.
7. The method for controlling bi-directional messaging between information systems according to claim 6, wherein in step 3, the message control method when the information system receives a message from a source information system comprises:
and 3-2, checking the destination system information indicated in the message, if the destination system information exists in the message, checking the transceiving control word of the message to the destination system, and if the forwarding is allowed, immediately forwarding to the destination system.
8. The method for controlling bi-directional messaging between information systems according to claim 7, wherein in step 3, the message control method when the information system receives a message from a source information system comprises:
step 3-3, checking the destination system information indicated in the message, if no destination system information exists, representing broadcast messages, checking control words of all the messages relative to a non-source system one by one, and if forwarding is allowed, immediately forwarding; checking one by one until all the systems configured in the receiving and transmitting control rule table are processed.
9. The method for controlling bi-directional messaging between information systems according to claim 8, wherein in step 3, the message control method when the information system receives a message from a source information system comprises:
step 3-4, if the conditions described in step 3-1, step 3-2 and step 3-3 are not satisfied, indicating that the message should not be received and forwarded, and immediately discarding the message.
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