CN111917644B - Edge computing network routing method and device based on UDP (user Datagram protocol) layer - Google Patents
Edge computing network routing method and device based on UDP (user Datagram protocol) layer Download PDFInfo
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- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/14—Routing performance; Theoretical aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04L45/70—Routing based on monitoring results
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- H—ELECTRICITY
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- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
- H04L45/745—Address table lookup; Address filtering
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- H—ELECTRICITY
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Abstract
The application relates to a UDP (user Datagram protocol) layer-based edge computing network routing method and device. The method comprises the following steps: receiving an IP data packet, converting the IP data packet into a UDP packet of an application layer and setting a routing table; judging the packet type of the UDP packet; when the packet type of the UDP packet is a data packet, forwarding the data packet to a destination address according to a data packet inquiry routing table; and when the packet type of the UDP packet is a command packet, judging whether the destination address of the command packet is the current node in the edge computing network, if so, synthesizing a pong message, inquiring a routing table according to the pong message to forward the pong message, and if not, forwarding the command packet to a node outside the edge computing network according to the network communication state in the edge computing network, or inquiring the routing table according to the command packet to forward the command packet to the destination address. By adopting the method, the data transmission efficiency can be improved.
Description
Technical Field
The present application relates to the field of edge computing technologies, and in particular, to a UDP layer based edge computing network routing method and apparatus.
Background
For data transmission on the internet, the transport layer is based on the ip protocol, and the application layer protocol comprises udp and tcp. And the ip packet is routed according to the ip address, and forwarded to the next hop by the router according to the configuration rule.
The data packet is forwarded on the ip layer according to the ip address and is carried out by a network managed by an operator. But in some cases this is not necessarily the optimal choice. And the routing rules of the operator are not intervenible by the application layer. Resulting in inefficient IP packet transmission in the edge computing network.
Disclosure of Invention
Therefore, it is necessary to provide a UDP layer based edge computing network routing method and apparatus capable of solving the problem of low IP packet transmission efficiency in the edge computing network.
A UDP layer based edge computing network routing method, the method comprising:
receiving an IP data packet, converting the IP data packet into a UDP packet of an application layer and setting a routing table;
judging the packet type of the UDP packet; the packet type includes: a data packet and a command packet;
when the packet type of the UDP packet is a data packet, inquiring the routing table according to the data packet to forward the data packet to a destination address;
and when the packet type of the UDP packet is a command packet, judging whether the destination address of the command packet is the current node in the edge computing network, if so, synthesizing a pong message, inquiring the routing table according to the pong message, and forwarding the pong message, otherwise, forwarding the command packet to a node outside the edge computing network according to the network communication state in the edge computing network, or inquiring the routing table according to the command packet, and forwarding the command packet to the destination address.
In one embodiment, the header of the UDP packet includes: a packet type field, a sender IP field, a sender port field, a sender edge gateway IP field, a sender edge gateway port field, a receiver IP field, a receiver port field, a receiver edge gateway IP field, and a receiver edge gateway port field.
In one embodiment, the method further comprises the following steps: and when the packet type of the UDP packet is a data packet, judging whether a sending end IP field of the data packet is empty, if so, setting the contents of the sending end IP field, a sending end port field, a sending end edge gateway IP field and a sending edge gateway port field of the data packet, inquiring the routing table according to the contents of the receiving end edge gateway IP field to obtain a next hop address or a destination address, and forwarding the data packet to the next hop address or the destination address.
In one embodiment, the method further comprises the following steps: when the port field of the sending end is empty, checking the network communication state from the current node to the destination address through a ping protocol; and determining a next hop address according to the network communication state until the command packet is forwarded to a node outside the edge computing network.
In one embodiment, the method further comprises the following steps: and when the port field of the sending end is not empty and the IP field of the sending end is empty, setting the contents of the IP field of the sending end, the port field of the sending end, the IP field of the edge gateway of the sending end and the port field of the port of the sending edge of the command packet, inquiring the routing table according to the content of the IP field of the edge gateway of the receiving end to obtain a next hop address or a destination address, and forwarding the command packet to the next hop address or the destination address.
An edge computing network routing apparatus based on a UDP layer, the apparatus comprising:
the conversion module is used for receiving an IP data packet, converting the IP data packet into a UDP packet of an application layer and obtaining a routing table;
the type judging module is used for judging the packet type of the UDP packet; the packet type includes: a data packet and a command packet;
a data packet routing module, configured to query the routing table according to the data packet to forward the data packet to a destination address when the packet type of the UDP packet is a data packet;
and the command packet routing module is used for judging whether the destination address of the command packet is the current node in the edge computing network or not when the packet type of the UDP packet is the command packet, synthesizing a pong message if the destination address of the command packet is the current node in the edge computing network, inquiring the routing table according to the pong message and forwarding the pong message, and forwarding the command packet to a node outside the edge computing network according to the network communication state in the edge computing network or forwarding the command packet to the destination address according to the routing table inquired by the command packet if the destination address of the command packet is the current node in the edge computing network.
In one embodiment, the header of the UDP packet includes: a packet type field, a sender IP field, a sender port field, a sender edge gateway IP field, a sender edge gateway port field, a receiver IP field, a receiver port field, a receiver edge gateway IP field, and a receiver edge gateway port field.
In one embodiment, the data packet routing module is further configured to, when the packet type of the UDP packet is a data packet, determine whether a sending-end IP field of the data packet is empty, if so, set contents of the sending-end IP field, the sending-end port field, a sending-end edge gateway IP field, and a sending-edge gateway port field of the data packet, query the routing table according to the contents of the receiving-end edge gateway IP field, obtain a next-hop address or a destination address, and forward the data packet to the next-hop address or the destination address.
A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
receiving an IP data packet, converting the IP data packet into a UDP packet of an application layer and setting a routing table;
judging the packet type of the UDP packet; the packet type includes: a data packet and a command packet;
when the packet type of the UDP packet is a data packet, inquiring the routing table according to the data packet to forward the data packet to a destination address;
and when the packet type of the UDP packet is a command packet, judging whether the destination address of the command packet is the current node in the edge computing network, if so, synthesizing a pong message, inquiring the routing table according to the pong message, and forwarding the pong message, otherwise, forwarding the command packet to a node outside the edge computing network according to the network communication state in the edge computing network, or inquiring the routing table according to the command packet, and forwarding the command packet to the destination address. .
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
receiving an IP data packet, converting the IP data packet into a UDP packet of an application layer and setting a routing table;
judging the packet type of the UDP packet; the packet type includes: a data packet and a command packet;
when the packet type of the UDP packet is a data packet, inquiring the routing table according to the data packet to forward the data packet to a destination address;
and when the packet type of the UDP packet is a command packet, judging whether the destination address of the command packet is the current node in the edge computing network, if so, synthesizing a pong message, inquiring the routing table according to the pong message, and forwarding the pong message, otherwise, forwarding the command packet to a node outside the edge computing network according to the network communication state in the edge computing network, or inquiring the routing table according to the command packet, and forwarding the command packet to the destination address. .
According to the edge computing network routing method, device, computer equipment and storage medium based on the UDP layer, when an IP data packet enters the edge computing network, the IP data packet is converted into the UDP packet of the application layer, the UDP packet can be forwarded through the nodes in the edge computing network and can quickly and controllably reach the edge of the edge computing network, and the UDP packet is converted into the IP data packet, so that the routing of the IP data packet is realized. The embodiment of the invention can improve the transmission efficiency of the IP data packet.
Drawings
FIG. 1 is a flow diagram illustrating a UDP layer-based edge computing network routing method in one embodiment;
FIG. 2 is a schematic flow chart diagram illustrating the packet routing steps in one embodiment;
FIG. 3 is a flow diagram illustrating the command packet routing steps in one embodiment;
fig. 4 is a schematic flow chart of a ping message receiving step in another embodiment;
FIG. 5 is a block diagram of an embodiment of an edge computing network routing device based on a UDP layer;
FIG. 6 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, as shown in fig. 1, there is provided a UDP layer based edge computing network routing method, including the steps of:
The IP packet refers to a packet based on an IP protocol of a transport layer, and the transmission of the IP packet is managed only by an operator, so that the transmission efficiency of each IP packet cannot be guaranteed when dealing with a complex network situation. UDP is an application layer protocol that can be managed by a terminal or a server, and in particular, in an edge computing network, forwarding of data between nodes in the edge computing network can be performed through UDP.
The routing table refers to a routing table forwarded by data in the edge computing network, the routing table can be freely configured, and a next hop address can be correspondingly obtained by inquiring a destination address. The forwarding of data in the edge computing network is thereby achieved such that the data reaches the edge of the edge computing network.
And step 104, judging the packet type of the UDP packet.
The packet type includes: the data packet only needs to forward data, and if the data packet is the command packet, the terminal or the server corresponding to the destination address is also needed to feed back the command packet.
And 106, when the packet type of the UDP packet is a data packet, forwarding the data packet to a destination address according to the data packet inquiry routing table.
And 108, when the packet type of the UDP packet is a command packet, judging whether the destination address of the command packet is the current node in the edge computing network, if so, synthesizing a pong message, inquiring the routing table according to the pong message to forward the pong message, and if not, forwarding the command packet to a node outside the edge computing network according to the network communication state in the edge computing network, or inquiring the routing table according to the command packet to forward the command packet to the destination address.
When the command packet is a ping message, it operates according to the ping-pong mechanism.
In the edge computing network routing method based on the UDP layer, when an IP data packet enters the edge computing network, the IP data packet is converted into a UDP packet of an application layer, the UDP packet can be forwarded through nodes in the edge computing network and can quickly and controllably reach the edge of the edge computing network, and the UDP packet is converted into the IP data packet, so that the routing of the IP data packet is realized. The embodiment of the invention can improve the transmission efficiency of the IP data packet.
In one embodiment, the header of the UDP packet includes: a packet type field, a sender IP field, a sender port field, a sender edge gateway IP field, a sender edge gateway port field, a receiver IP field, a receiver port field, a receiver edge gateway IP field, and a receiver edge gateway port field.
Specifically, the packet types include: the system comprises a data packet, a T _ UPING command packet and a T _ UPONG command packet, wherein the T _ UPING command packet refers to that a ping message is received and needs to be replied, and the T _ UPONG command packet refers to that a reply message for sending the ping message is sent. Can be used to detect rtt and packet loss rate.
The specific field codes are as follows:
the structure of the UDP data packet header:
packet type: t _ DATA packet. Following the head, payload;
t _ UPING command packet. Receiving the ping message, and needing to reply the pong message;
t _ UPONG command packet. A reply message to send a ping message. Can be used to detect rtt and packet loss rate.
snat _ ip snat _ port: ip and port of sending end
srelay _ ip srelay _ port ip/port of sender edge gateway
dst _ ip dst _ port: ip/port at the receiving end
Dralay _ ip Dralay _ Port: ip/port of receiver edge gateway
In one embodiment, as shown in fig. 2, when the packet type of the UDP packet is a data packet, it is determined whether a sending end IP field of the data packet is empty, if so, the sending end IP field, the sending end port field, a sending end edge gateway IP field, and the content of the sending edge gateway port field of the data packet are set, a routing table is queried according to the content of the receiving end edge gateway IP field, a next hop address or a destination address is obtained, and the data packet is forwarded to the next hop address or the destination address.
In another embodiment, when the port field of the sending end is empty, the network communication state from the current node to the destination address is checked through a ping protocol; and determining the next hop address according to the network communication state until the command packet is forwarded to a node outside the edge computing network.
Specifically, as shown in fig. 3, when the port field of the sending end is not empty and the IP field of the sending end is empty, the contents of the IP field of the sending end, the port field of the sending end, the IP field of the edge gateway of the sending end, and the port field of the edge gateway of the sending end of the command packet are set, the routing table is queried according to the contents of the IP field of the edge gateway of the receiving end, so as to obtain the next hop address or the destination address, and the command packet is forwarded to the next hop address or the destination address.
In this embodiment, the destination address may be a node in the edge computing network, or may be an internet device outside the edge computing network, and when the destination address is a node in the edge computing network, the destination address may be implemented by internal forwarding. If the network is an internet device outside the edge computing network, a ping protocol is required, and specifically, a Raw socket can be adopted to obtain the network condition from the edge server to the internet device.
Specifically, when a network layer IP data packet is sent to a target server, source information, routing information, and the like of the packet are packed into payload of a ping message, so that when the packet is received, the source information of the packet can be restored.
Specifically, when receiving a ping message, the ICMP packet format may be defined first:
| icmp hdr | Magic | sequence no | sendTick | Routehead |
icmphdr: for ping protocol header
Magic: identified as EDN network protocol packet for fixed character string
Sequence No. ping Sequence number
SendTick: the sending time is used for calculating rtt;
routehead: packet information in the EDN network is included.
The specific process is shown in fig. 4.
It should be understood that, although the steps in the flowchart of fig. 1 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 1 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 5, there is provided an edge computing network routing apparatus based on a UDP layer, including: a conversion module 502, a type judgment module 504, a data packet routing module 506 and a command packet routing module 508, wherein:
a conversion module 502, configured to receive an IP data packet, convert the IP data packet into a UDP packet of an application layer, and obtain a routing table;
a type determining module 504, configured to determine a packet type of the UDP packet; the packet type includes: a data packet and a command packet;
a data packet routing module 506, configured to query the routing table according to the data packet to forward the data packet to a destination address when the packet type of the UDP packet is a data packet;
a command packet routing module 508, configured to, when the packet type of the UDP packet is a command packet, determine whether a destination address of the command packet is a current node in the edge computing network, if so, synthesize a pong message, and query the routing table according to the pong message to forward the pong message, and if not, forward the command packet to a node outside the edge computing network according to a network connectivity state in the edge computing network, or query the routing table according to the command packet to forward the command packet to the destination address.
In one embodiment, the header of the UDP packet includes: a packet type field, a sender IP field, a sender port field, a sender edge gateway IP field, a sender edge gateway port field, a receiver IP field, a receiver port field, a receiver edge gateway IP field, and a receiver edge gateway port field.
In one embodiment, the data packet routing module 506 is further configured to, when the packet type of the UDP packet is a data packet, determine whether a sending end IP field of the data packet is empty, if so, set contents of the sending end IP field, the sending end port field, a sending end edge gateway IP field, and a sending edge gateway port field of the data packet, query the routing table according to the content of the receiving end edge gateway IP field, obtain a next hop address or a destination address, and forward the data packet to the next hop address or the destination address.
In one embodiment, the command packet routing module 508 is further configured to check a network connectivity status from the current node to the destination address through a ping protocol when the port field of the sending end is empty; and determining a next hop address according to the network communication state until the command packet is forwarded to a node outside the edge computing network.
In one embodiment, the command packet routing module 508 is further configured to set the contents of the sender IP field, the sender port field, the sender edge gateway IP field, and the sender edge gateway port field of the command packet when the sender port field is not empty and the sender IP field is empty, query the routing table according to the contents of the receiver edge gateway IP field to obtain a next hop address or a destination address, and forward the command packet to the next hop address or the destination address.
For specific limitations of the UDP layer based edge computing network routing apparatus, reference may be made to the above limitations of the UDP layer based edge computing network routing method, which is not described herein again. The modules in the UDP layer based edge computing network routing apparatus may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as shown in fig. 6. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing data. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a UDP layer based edge computing network routing method.
Those skilled in the art will appreciate that the architecture shown in fig. 6 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In an embodiment, a computer device is provided, comprising a memory storing a computer program and a processor implementing the steps of the method in the above embodiments when the processor executes the computer program.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method in the above-mentioned embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A UDP layer based edge computing network routing method, the method comprising:
receiving an IP data packet, converting the IP data packet into a UDP packet of an application layer and setting a routing table; the packet header of the UDP packet includes: a packet type field, a sending end IP field, a sending end port field, a sending end edge gateway IP field, a sending edge gateway port field, a receiving end IP field, a receiving end port field, a receiving end edge gateway IP field, and a receiving end edge gateway port field;
judging the packet type of the UDP packet; the packet type includes: a data packet and a command packet;
when the packet type of the UDP packet is a data packet, inquiring the routing table according to the data packet to forward the data packet to a destination address;
when the packet type of the UDP packet is a command packet, judging whether the destination address of the command packet is a current node in an edge computing network, if so, synthesizing a pong message, inquiring a routing table according to the pong message to forward the pong message, and if not, forwarding the command packet to a node outside the edge computing network according to the network communication state in the edge computing network, or inquiring the routing table according to the command packet to forward the command packet to the destination address;
when the packet type of the UDP packet is a data packet, querying the routing table according to the data packet to forward the data packet to a destination address, including:
and when the packet type of the UDP packet is a data packet, judging whether a sending end IP field of the data packet is empty, if so, setting the contents of the sending end IP field, a sending end port field, a sending end edge gateway IP field and a sending edge gateway port field of the data packet, inquiring the routing table according to the contents of the receiving end edge gateway IP field to obtain a next hop address or a destination address, and forwarding the data packet to the next hop address or the destination address.
2. The method of claim 1, wherein forwarding the command packet to a node outside the edge computing network according to a network connectivity status in the edge computing network comprises:
when the port field of the sending end is empty, checking the network communication state from the current node to the destination address through a ping protocol;
and determining a next hop address according to the network communication state until the command packet is forwarded to a node outside the edge computing network.
3. The method of claim 1, wherein querying the routing table according to the command packet to forward the command packet to a destination address comprises:
and when the port field of the sending end is not empty and the IP field of the sending end is empty, setting the contents of the IP field of the sending end, the port field of the sending end, the IP field of the edge gateway of the sending end and the port field of the port of the sending edge of the command packet, inquiring the routing table according to the content of the IP field of the edge gateway of the receiving end to obtain a next hop address or a destination address, and forwarding the command packet to the next hop address or the destination address.
4. An edge computing network routing apparatus based on a UDP layer, the apparatus comprising:
the conversion module is used for receiving an IP data packet, converting the IP data packet into a UDP packet of an application layer and obtaining a routing table; the packet header of the UDP packet includes: a packet type field, a sending end IP field, a sending end port field, a sending end edge gateway IP field, a sending edge gateway port field, a receiving end IP field, a receiving end port field, a receiving end edge gateway IP field, and a receiving end edge gateway port field;
the type judging module is used for judging the packet type of the UDP packet; the packet type includes: a data packet and a command packet;
a data packet routing module, configured to query the routing table according to the data packet to forward the data packet to a destination address when the packet type of the UDP packet is a data packet;
a command packet routing module, configured to, when a packet type of the UDP packet is a command packet, determine whether a destination address of the command packet is a current node in an edge computing network, if so, synthesize a pong message, query the routing table according to the pong message, and forward the pong message, and if not, forward the command packet to a node outside the edge computing network according to a network connectivity state in the edge computing network, or query the routing table according to the command packet, and forward the command packet to the destination address;
the data packet routing module is further configured to, when the packet type of the UDP packet is a data packet, determine whether a sending end IP field of the data packet is empty, if so, set the content of the sending end IP field, the sending end port field, the sending end edge gateway IP field, and the sending edge gateway port field of the data packet, query the routing table according to the content of the receiving end edge gateway IP field, obtain a next hop address or a destination address, and forward the data packet to the next hop address or the destination address.
5. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor realizes the steps of the method of any one of claims 1 to 3 when executing the computer program.
6. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 3.
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| CN109067796A (en) * | 2018-09-27 | 2018-12-21 | 北京粉笔未来科技有限公司 | A kind of data transmission method and device |
| CN110971701A (en) * | 2019-12-10 | 2020-04-07 | 广州番禺职业技术学院 | Internet of things communication method and device |
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