CN108880885A - A kind of message processing method and device - Google Patents
A kind of message processing method and device Download PDFInfo
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- CN108880885A CN108880885A CN201810631590.6A CN201810631590A CN108880885A CN 108880885 A CN108880885 A CN 108880885A CN 201810631590 A CN201810631590 A CN 201810631590A CN 108880885 A CN108880885 A CN 108880885A
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- vpn
- netlink socket
- message
- server
- virtual
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/161—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
- H04L69/162—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields involving adaptations of sockets based mechanisms
Abstract
The application provides a kind of message processing method and device, it is associated by the Netlink Socket that will be created and for the virtual IP address of VPN client distribution, and it is stored in preset relation table, and safeguard Netlink Socket and the preset relation table of virtual IP address, to determine whether VPN process is still monitoring Netlink Socket, message will be replied with this to be reported to VPN process or abandon reply message, avoid the generation of abnormal conditions.
Description
Technical field
This application involves field of communication technology more particularly to a kind of message processing methods and device.
Background technique
In recent years, with the continuous development of network technology, VPN (Virtual Private Network, Virtual Private Network
Network) become a kind of networking technology that application reaches its maturity at present.Virtual Private Network we it can be understood as being to fictionalize
The enterprises private network come, to realize transmission of the data flow on public network between private network.For example, the company man to go on business in other places
Member can access the vpn server of company's erection by VPN client, and then to access in-company Intranet resource.
The substantially process of current accessed Intranet resource is：VPN client is sent after encrypting data message by ssl protocol
To vpn server, vpn server receives data message and carries out SSL decryption and be forwarded to the real server of Intranet, true to take
Business device replys request message and is sent to vpn server, and kernel process passes through after receiving reply message in vpn server
Netlink Socket will reply message up sending to User space VPN process, and VPN process inquires corresponding VPN after receiving reply message
The Socket of client is transmitted to VPN client.
Currently in the treatment process for replying message, when the reply message of access Intranet resource is sent to vpn server
Afterwards, need to judge whether VPN process is monitoring Netlink Socket, if VPN process is no longer monitored, and kernel process
Will reply message up sending arrive VPN process when will cause exception, therefore currently to reply message treatment process in be badly in need of determination
Whether VPN process is still monitoring Netlink Socket.
Summary of the invention
In view of this, the application provides a kind of message processing method and device.
Specifically, the application is achieved by the following technical solution：
A kind of message processing method, which is characterized in that be applied to vpn server, configure VPN process, kernel process：
When receiving the data message of VPN client, VPN process creation Netlink Socket, and will be created
Netlink Socket and the virtual IP address distributed for the VPN client are recorded to the VPN client and the VPN and are serviced
In the network connection that device is established；
After creating the Netlink Socket, VPN process is by the Netlink Socket created and is institute
The virtual IP address for stating VPN client distribution is associated, and is stored in preset relation table；
VPN process will be in the server where the data message forwarding that received to Intranet resource；
Kernel process is after receiving the reply message of the server, in the preset relation table, according to reply
Destination IP in message searches the Netlink Socket to match with the destination IP；
Kernel process will reply message and report to VPN process according to the Netlink Socket found；
VPN process finds corresponding network connection by the Netlink Socket；
VPN process will reply message and be transmitted to VPN client according to network connection corresponding with the Netlink Socket
End.
A kind of message process device, which is characterized in that described device includes：
Configuration module, for configuring VPN process, kernel process；
Creation module, for when receiving the data message of VPN client, VPN process creation Netlink Socket,
And it records by the Netlink Socket created and for the virtual IP address of VPN client distribution to the VPN client
In the network connection established with the vpn server；
Relating module, for the Netlink that after creating the Netlink Socket, VPN process will be created
Socket and the virtual IP address distributed for the VPN client are associated, and are stored in preset relation table；
First forwarding module, for VPN process by the server where the data message forwarding received to Intranet resource
In；
First searching module, for kernel process after receiving the reply message of the server, described preset
In relation table, the Netlink Socket to match with the destination IP is searched according to the destination IP replied in message；
Reporting module will reply message and report to VPN for kernel process according to the Netlink Socket found
Process；
Second searching module finds corresponding network connection by the Netlink Socket for VPN process；
Second forwarding module will be replied for VPN process according to network connection corresponding with the Netlink Socket
Message is transmitted to VPN client.
Technical solution provided by the embodiments of the present application by the Netlink Socket that will be created and is the VPN
The virtual IP address of client distribution is associated, and is stored in preset relation table, and safeguards Netlink Socket and virtual
The preset relation table of IP will reply message with this and be reported to determine whether VPN process is still monitoring Netlink Socket
VPN process abandons reply message, avoids the generation of abnormal conditions.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to required attached in embodiment description
Figure is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments as described in this application, for
For those of ordinary skill in the art, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of application scenarios schematic diagram shown in one exemplary embodiment of the application；
Fig. 2 is a kind of implementation flow chart of the message processing method shown in one example embodiments of the application；
Fig. 3 is the structural schematic diagram of the message process device shown in one example embodiments of the application.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
It is only to be not intended to be limiting the application merely for for the purpose of describing particular embodiments in term used in this application.
It is also intended in the application and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not departing from
In the case where the application range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination ".
A kind of message processing method provided by the embodiments of the present application is illustrated first, this method may include following step
Suddenly：
When receiving the data message of VPN client, VPN process creation Netlink Socket, and will be created
Netlink Socket and the virtual IP address distributed for the VPN client are recorded to the VPN client and the VPN and are serviced
In the network connection that device is established；
After creating the Netlink Socket, VPN process is by the Netlink Socket created and is institute
The virtual IP address for stating VPN client distribution is associated, and is stored in preset relation table；
VPN process will be in the server where the data message forwarding that received to Intranet resource；
Kernel process is after receiving the reply message of the server, in the preset relation table, according to reply
Destination IP in message searches the Netlink Socket to match with the destination IP；
Kernel process will reply message and report to VPN process according to the Netlink Socket found；
VPN process finds corresponding network connection by the Netlink Socket；
VPN process will reply message and be transmitted to VPN client according to network connection corresponding with the Netlink Socket
End.
Urgent need stated in the background determines whether VPN process is still monitoring Netlink Socket, if VPN process
No longer monitor, and when kernel process will reply message up sending to VPN process, will cause exception.It is provided herein thus
Technical solution, application scenarios schematic diagram as shown in Figure 1 configure VPN process, kernel process, and VPN process will be created
Netlink Socket and the virtual IP address distributed for the VPN client are associated, and are stored in preset relation table,
Safeguard Netlink Socket and the preset relation table of virtual IP address, kernel process is in the reply message for receiving the server
Afterwards, in the preset relation table, the Netlink to match with the destination IP is searched according to the destination IP replied in message
Socket, if found in the preset relation table Netlink Socket, VPN that match with the destination IP into
Journey will be replied message and reported in monitoring Netlink Socket, kernel process according to the Netlink Socket found
VPN process, if not finding the Netlink Socket to match with the destination IP in the preset relation table,
VPN process does not monitor Netlink Socket, and kernel process abandons the reply message.
The VPN process is executed under User space, and the kernel process is executed under kernel state.The kernel
State：As soon as we claim process to be in kernel run mode, letter when process execution system calling, which is fallen into, to be executed in kernel code
Claim kernel state, processor is in the highest kernel code of level of privilege and executes at this time；The User space：When process is executing user
When the code of oneself, then it is claimed to be in user's run mode, abbreviation User space, the processor personal code work minimum in level of privilege at this time
Middle execution.
In order to further illustrate to the application, the following example is provided：
As shown in Fig. 2, being a kind of implementation flow chart of the application message processing method, following step can specifically include
Suddenly：
S201, when receiving the data message of VPN client, VPN process creation Netlink Socket, and will be created
The Netlink Socket built and the virtual IP address distributed for the VPN client are recorded to the VPN client and the VPN
In the network connection that server is established；
When receiving the data message of VPN client, VPN process judge the data message whether headed by datagram
Text, if so, creation data message handles thread, if it is not, can then be multiplexed the data message processing thread created.
VPN process handles thread creation Netlink Socket, and the Netlink that will be created in current data message
Socket and the virtual IP address distributed for VPN client record in the network connection established to VPN client and vpn server,
So that Netlink Socket created, the virtual IP address for VPN client distribution, client Socket are connected in consolidated network
In, wherein virtual IP address is the virtual IP address of VPN process VPN client distribution.For example, have virtual ip address pond in vpn server, it should
Virtual ip address pond range is 1.1.1.1-5.5.5.5, and VPN process therefrom chooses some virtual IP address 1.1.1.2 and distributes to this
VPN client, the VPN client are denoted as VPN client 1, which can be used for carrying out the source IP address in data message
The server replaced and be sent to where Intranet resource.
S202, after creating the Netlink Socket, VPN process by the Netlink Socket created and
Virtual IP address for VPN client distribution is associated, and is stored in preset relation table；
After creating Netlink Socket, Netlink Socket and VPN process that VPN process will be created
The virtual IP address of VPN client distribution is associated, such as specifically can be Netlink Socket1 (related to VPN client 1)
It is associated, and is stored in preset relation table with virtual IP address 1.1.1.2, as shown in table 1 below.
| Netlink Socket | Virtual IP address |
| Netlink Socket1 | 1.1.1.2 |
| Netlink Socket2 | 1.1.1.3 |
Table 1
In addition, maintenance Netlink Socket and the preset relation table of virtual IP address.When VPN client and vpn server are built
When vertical network connection disconnects, VPN process is recovered as the virtual IP address of VPN client distribution, and for example, VPN client 1 is divided
The virtual IP address 1.1.1.2 matched, when the network connection that VPN client 1 and vpn server are established disconnects, the recycling of VPN process
For VPN client distribution virtual IP address 1.1.1.2, and by relation table corresponding table item data delete, i.e., deletion Netlink
Socket1 and 1.1.1.2.
Wherein VPN process can distribute to this virtual IP address other after the virtual IP address for being recovered as VPN client distribution
VPN client creates Netlink corresponding with other VPN clients when other VPN clients access Intranet resource
Socket, and be associated with this virtual IP address, and be stored in preset relation table.
S203, VPN process will be in the servers where the data message forwarding that received to Intranet resource；
VPN process sends the data message that the VPN client received is sent to the Microsoft Loopback Adapter of vpn server, by
The Microsoft Loopback Adapter of vpn server will be in the server where the data message forwarding to Intranet resource.
S204, kernel process is after receiving the reply message of the server, in the preset relation table, according to
It replys the destination IP in message and searches the Netlink Socket to match with the destination IP；
Kernel process in vpn server is after receiving the reply message of the server where Intranet resource, default
Relation table in, the Netlink Socket to match with the destination IP is searched according to the destination IP replied in message, wherein should
Destination IP is the virtual IP address that VPN process is VPN client distribution.For example, the destination IP replied in message is 1.1.1.2, then exist
In preset relation table, matched Netlink Socket is searched according to destination IP 1.1.1.2, in relation table with
1.1.1.2 the Netlink Socket to match is Netlink Socket1.
If in addition, not found according to the destination IP replied in message and being matched with it in preset relation table
Netlink Socket, then show VPN process no longer monitor Netlink Socket, abandon the reply message.
S205, kernel process will reply message and report to VPN process according to the Netlink Socket found；
Kernel process will reply message and report to VPN process according to the Netlink Socket found.Such as it is above-mentioned
It is described that matched Netlink Socket is searched according to destination IP 1.1.1.2, in relation table with 1.1.1.2 phase
Matched Netlink Socket is Netlink Socket1, and kernel process passes through found Netlink Socket1,
Message will be replied and report to VPN process.
S206, VPN process find corresponding network connection by the Netlink Socket；
Since the Netlink Socket created is originally recorded the network established to VPN client and vpn server
In connection, after finding the Netlink Socket created, VPN process by searching for the Netlink Socket arrived,
Corresponding network connection can be found.Such as VPNB process can search by searching for the Netlink Socket1 arrived
The network connection established to VPN client 1 and vpn server.
S207, VPN process will be replied message and are transmitted to according to network connection corresponding with the Netlink Socket
VPN client.
VPN process is after finding network connection corresponding with Netlink Socket, according to the visitor in network connection
Family end Socket will reply message and be forwarded to VPN client.
By the above-mentioned description to technical scheme, VPN process is by the Netlink Socket created and is
The virtual IP address of VPN client distribution is associated, and is stored in preset relation table, maintenance Netlink Socket and
The preset relation table of virtual IP address, kernel process is after receiving the reply message of the server, in the preset relation table
In, the Netlink Socket to match with the destination IP is searched according to the destination IP replied in message, if described default
Relation table in find the Netlink Socket to match with the destination IP, then VPN process monitor Netlink
Socket, kernel process will reply message and report to VPN process, VPN process is logical according to the Netlink Socket found
It crosses the Netlink Socket and finds corresponding network connection, connected by network corresponding with the Netlink Socket
It connects, message will be replied and be transmitted to VPN client, if not found in the preset relation table and the destination IP phase
The Netlink Socket matched, then VPN process does not monitor Netlink Socket, and kernel process abandons the reply message,
Message will be replied with this to be reported to VPN process or abandon reply message, avoid the generation of abnormal conditions.
Those of ordinary skill in the art will appreciate that：Realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can store in computer-readable storage medium, which exists
When execution, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes：ROM, RAM, magnetic or disk
Etc. the various media that can store program code.
It is corresponding with the embodiment of aforementioned message processing method, present invention also provides the embodiment of message process device,
As shown in figure 3, including：Configuration module 310, creation module 320, relating module 330, the first forwarding module 340, first search mould
Block 350, reporting module 360, the second searching module 370, the second forwarding module 380.
Configuration module 310, for configuring VPN process, kernel process；
Creation module 320, for when receiving the data message of VPN client, VPN process creation Netlink
Socket, and record by the Netlink Socket created and for the virtual IP address of VPN client distribution to the VPN
In the network connection that client and the vpn server are established；
Relating module 330, for the Netlink that after creating the Netlink Socket, VPN process will be created
Socket and the virtual IP address distributed for the VPN client are associated, and are stored in preset relation table；
First forwarding module 340, for VPN process by the service where the data message forwarding received to Intranet resource
In device；
First searching module 350, for kernel process after receiving the reply message of the server, described default
Relation table in, the Netlink Socket to match with the destination IP is searched according to the destination IP replied in message；
Reporting module 360 will be replied message and reported to for kernel process according to the Netlink Socket found
VPN process；
Second searching module 370 finds corresponding network by the Netlink Socket for VPN process and connects
It connects；
Second forwarding module 380 is incited somebody to action for VPN process according to network connection corresponding with the Netlink Socket
It replys message and is transmitted to VPN client.
In a kind of specific embodiment of the application,
The virtual IP address is the virtual IP address of the distribution of VPN client described in VPN process.
In a kind of specific embodiment of the application, first forwarding module 340 is specifically used for：
VPN process sends the data message received to the Microsoft Loopback Adapter of vpn server, will be connect by the Microsoft Loopback Adapter
In server where the data message forwarding received to Intranet resource.
In a kind of specific embodiment of the application, described device further includes：
Module 390 is abandoned, if not searching in the preset relation table according to the destination IP replied in message
To the Netlink Socket to match with the destination IP, then the reply message is abandoned.
In a kind of specific embodiment of the application, described device further includes：
Recycling module 400, the network connection for establishing when the VPN client with the vpn server disconnect
When, VPN process is recovered as the virtual IP address of the VPN client distribution.
The function of each unit and the realization process of effect are specifically detailed in the above method and correspond to step in above-mentioned apparatus
Realization process, details are not described herein.
For device embodiment, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
The purpose for needing to select some or all of the modules therein to realize application scheme.Those of ordinary skill in the art are not paying
Out in the case where creative work, it can understand and implement.
The effect realization process of each unit is specifically detailed in the realization process that step is corresponded in the above method in above system,
Details are not described herein.
For system embodiments, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.System embodiment described above is only schematical, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
The purpose for needing to select some or all of the modules therein to realize application scheme.Those of ordinary skill in the art are not paying
Out in the case where creative work, it can understand and implement.
The application can be in the general described in the text, such as program up and down of calculated value executable instruction performed by computer
Module.Generally, program module includes routines performing specific tasks or implementing specific abstract data types, programs, objects, group
Part, data structure etc..The application can also be practiced in a distributed computing environment, in these distributed computing environments, by
Task is executed by the connected remote processing devices of communication network.In a distributed computing environment, program module can be with
In the local and remote computer storage media including storage equipment.
The above is only the specific embodiment of the application, it is noted that for the ordinary skill people of the art
For member, under the premise of not departing from the application principle, several improvements and modifications can also be made, these improvements and modifications are also answered
It is considered as the protection scope of the application.
Claims (10)
1. a kind of message processing method, which is characterized in that be applied to vpn server, configure VPN process, kernel process：
When receiving the data message of VPN client, VPN process creation Netlink Socket, and will be created
Netlink Socket and the virtual IP address distributed for the VPN client are recorded to the VPN client and the VPN and are serviced
In the network connection that device is established；
After creating the Netlink Socket, VPN process is by the Netlink Socket created and is the VPN
The virtual IP address of client distribution is associated, and is stored in preset relation table；
VPN process will be in the server where the data message forwarding that received to Intranet resource；
Kernel process is after receiving the reply message of the server, in the preset relation table, according to reply message
In destination IP search the Netlink Socket to match with the destination IP；
Kernel process will reply message and report to VPN process according to the Netlink Socket found；
VPN process finds corresponding network connection by the Netlink Socket；
VPN process will reply message and be transmitted to VPN client according to network connection corresponding with the Netlink Socket.
2. the method according to claim 1, wherein
The virtual IP address is the virtual IP address of the distribution of VPN client described in VPN process.
3. the method according to claim 1, wherein the VPN process arrives the data message forwarding received
In server where Intranet resource, including：
VPN process sends the data message received to the Microsoft Loopback Adapter of vpn server, will be received by the Microsoft Loopback Adapter
Data message forwarding to Intranet resource where server in.
4. the method according to claim 1, wherein the method also includes：
If not found according to the destination IP replied in message and being matched with the destination IP in the preset relation table
Netlink Socket, then abandon the reply message.
5. the method according to claim 1, wherein the method also includes：
When the network connection that the VPN client and the vpn server are established disconnects, VPN process is recovered as described
The virtual IP address of VPN client distribution.
6. a kind of message process device, which is characterized in that described device includes：
Configuration module, for configuring VPN process, kernel process；
Creation module, for when receiving the data message of VPN client, VPN process creation Netlink Socket, and will
The Netlink Socket created and the virtual IP address distributed for the VPN client are recorded to the VPN client and institute
In the network connection for stating vpn server foundation；
Relating module, for the Netlink Socket that after creating the Netlink Socket, VPN process will be created
And it is associated for the virtual IP address of VPN client distribution, and be stored in preset relation table；
First forwarding module, will be in the server where the data message forwarding that received to Intranet resource for VPN process；
First searching module, for kernel process after receiving the reply message of the server, in the preset relationship
In table, the Netlink Socket to match with the destination IP is searched according to the destination IP replied in message；
Reporting module, for kernel process according to the Netlink Socket found, will reply message report to VPN into
Journey；
Second searching module finds corresponding network connection by the Netlink Socket for VPN process；
Second forwarding module will reply message for VPN process according to network connection corresponding with the Netlink Socket
It is transmitted to VPN client.
7. device according to claim 6, which is characterized in that
The virtual IP address is the virtual IP address of the distribution of VPN client described in VPN process.
8. device according to claim 6, which is characterized in that first forwarding module is specifically used for：
VPN process sends the data message received to the Microsoft Loopback Adapter of vpn server, will be received by the Microsoft Loopback Adapter
Data message forwarding to Intranet resource where server in.
9. device according to claim 6, which is characterized in that described device further includes：
Module is abandoned, if not finding according to the destination IP replied in message and institute in the preset relation table
The Netlink Socket that destination IP matches is stated, then abandons the reply message.
10. device according to claim 6, which is characterized in that described device further includes：
Recycling module, when the network connection for establishing when the VPN client and the vpn server disconnects, VPN into
Journey is recovered as the virtual IP address of the VPN client distribution.
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| CN110324227A (en) * | 2019-06-26 | 2019-10-11 | 厦门网宿有限公司 | Data transmission method and vpn server in a kind of vpn server |
| CN110932890A (en) * | 2019-11-20 | 2020-03-27 | 厦门网宿有限公司 | Data transmission method, server and computer readable storage medium |
| CN113055269A (en) * | 2019-12-27 | 2021-06-29 | 厦门网宿有限公司 | Virtual private network data transmission method and device |
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| CN110932890B (en) * | 2019-11-20 | 2022-09-09 | 厦门网宿有限公司 | Data transmission method, server and computer readable storage medium |
| CN113055269A (en) * | 2019-12-27 | 2021-06-29 | 厦门网宿有限公司 | Virtual private network data transmission method and device |
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