CN110061926A - A kind of ping method, storage medium, the terminal and server of multiplexing - Google Patents
A kind of ping method, storage medium, the terminal and server of multiplexing Download PDFInfo
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- CN110061926A CN110061926A CN201910344186.5A CN201910344186A CN110061926A CN 110061926 A CN110061926 A CN 110061926A CN 201910344186 A CN201910344186 A CN 201910344186A CN 110061926 A CN110061926 A CN 110061926A
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Classifications
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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
- H04L47/34—Flow control; Congestion control ensuring sequence integrity, e.g. using sequence numbers
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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
- H04L47/50—Queue scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- 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 invention discloses ping method, storage medium, the terminal and server of a kind of multiplexing, ping method includes: building icmp request message；Random number is generated, and the random number is filled to the sequence-number field sequence of icmp request message；Send icmp request message.The present invention can be to avoid in the prior art, while repeatedly calling ping tool that can not correctly obtain response when carrying out icmp request to same server, and then correctly cannot carry out decision problem to network condition；And it is in a preferred approach, multiple to need to send icmp request and be multiplexed the transmission socket of the application creation, and avoid calling more more sockets of ping process creation to save system resource and can raising efficiency.
Description
Technical field
The present invention relates to ping method, storage medium, the terminal and servers of a kind of multiplexing.
Background technique
The network equipment (such as router or AP) may require that the detection of the connection situation or link-quality that check network, we
Usually icmp echo can be carried out to a certain particular host (such as Baidu/Tencent's server) using ping tool in equipment to ask
It asks.
Ping utility issues the icmp request message (request) for having specific sequence number (sequence), target
Server must respond an icmp response message to source host (issuing the equipment of request) after receiving this message
(reply), the sequence number and in request message will be brought back in the response message.
Then in our meetings of transmitting terminal: (1) according to whether having received the response message with request message same sequence number
It may determine that whether network is connected to；(2) it (issues request message according to the two-way time of the secondary request-reply and receives response report
The time difference of text) network quality can be judged.
Specifically, conventional network equipment is all based on linux system, according to the realization of ping tool on linux system, i.e.,
When routine call ping tool inquires server, sequence number be by 0, it is incremented by successively.As program A calls ping work
Tool is when being inquired, just carried in first request message the process number of process A identifier and for 0 sequence number, at this time
There are one program B also ping tool to be called to inquire same server, then he can take his process number and be 0
Sequence number, this 2 icmp request messages can by upper layer gateway carry out SNAT conversion be sent to requested server, this
When server have received this 2 icmp request messages, the icmp response message that 2 sequence numbers are also 0 will be replied, this 2 are answered
Answer message will also pass through equipment upper layer gateway DNAT conversion after be sent to equipment, in general, gateway does NAT conversion
When can according in message identifier and sequence as conversion foundation, but part gateway equipment only using sequence as
Foundation is converted, then some gateways cannot be handled correctly when having 2 and the above sequence identical messages at the same time,
Leading to our icmp response message cannot correctly withdraw, and cause us that cannot make accurate judgment to network condition.
In addition, when there is a program to call existing ping tool when needing to send icmp request, then system will produce
A raw ping process simultaneously initializes some related resources (such as initialization socket) and more interprocess communications, in this way
It will result in the decline in more system resources consumptions and efficiency.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of ping method of multiplexing, storages to be situated between
Matter, terminal and server, the multithreading for solving prior art same program repeatedly call ping tool to same server simultaneously
It carries out correctly obtaining response when icmp request, and then decision problem and optimization system correctly cannot be carried out to network condition
The resource problem related to efficiency.
The purpose of the present invention is achieved through the following technical solutions:
The first aspect of the present invention provides a kind of ping method of multiplexing, comprising:
Construct icmp request message；
Random number is generated, and the random number is filled to the sequence-number field sequence of icmp request message；
Send icmp request message.
Further, the method also includes:
Receive icmp response message；
Obtain the sequence-number field sequence in icmp response message, and the sequence-number field with icmp request message
Sequence is compared.
Further, the method also includes before the building icmp request message the step of:
Request to be built is added in icmp request chained list, and checks whether icmp socket is ready, is such as not ready to
It then creates for sending icmp request message and/or receiving the icmp socket of icmp response message；
The transmission icmp request message includes:
Whether have request need send, just issue the icmp request message when having request if checking in icmp request chained list.
Further, the method further includes initialization step:
Registration icmp requests relevant call back function, for requesting to call and initialize successfully or after failure in icmp
Timer is used for icmp requesting interval.
Further, the generation random number includes:
According to present system time, the seed of a nanosecond is generated；
The random number of an a certain range is generated with the seed.
The second aspect of the present invention provides a kind of storage medium, is stored thereon with computer instruction, the computer instruction
The step of a kind of ping method of multiplexing is executed when operation.
The third aspect of the present invention provides a kind of device, including memory and processor, and being stored on the memory can
The computer instruction run on the processor, the processor executes described one kind when running the computer instruction more
The step of ping method of road multiplexing.
The fourth aspect of the present invention provides a kind of ping answer method of multiplexing, comprising:
Receive icmp request message；
Generate icmp response message, sequence-number field sequence and the icmp request message of the icmp response message
Sequence-number field sequence is identical；
Send icmp response message；
The sequence-number field sequence of the icmp request message is the random number of filling.
The fifth aspect of the present invention provides a kind of storage medium, is stored thereon with computer instruction, the computer instruction
The step of a kind of ping answer method of multiplexing is executed when operation.
The sixth aspect of the present invention provides a kind of server, including memory and processor, is stored on the memory
The computer instruction that can be run on the processor, the processor execute described one kind when running the computer instruction
The step of ping answer method of multiplexing.
The beneficial effects of the present invention are:
(1) present invention can be to avoid in the prior art, while repeatedly ping tool being called to carry out icmp to same server
Response can not be correctly obtained when request, and then decision problem correctly cannot be carried out to network condition.
(2) and in a preferred approach, multiple transmission sockets for needing to send icmp request and being multiplexed the application creation
Word, and avoid calling more more sockets of ping process creation to save system resource and can raising efficiency.
(3) to sum up, the application can substitute the existing various scenes for needing to use the detection of ping tool, as a result reliably.
Detailed description of the invention
Fig. 1 is the flow chart of an exemplary embodiment of the invention.
Specific embodiment
Technical solution of the present invention is clearly and completely described with reference to the accompanying drawing, it is clear that described embodiment
It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
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 ".
The ping utility of the prior art can issue the icmp request message for having specific sequence number (sequence)
(request), destination server must respond an icmp to source host (issuing the equipment of request) after receiving this message
Response message (reply), and the sequence number in request message will be brought back in the response message.Then transmitting terminal we
Meeting: (1) according to whether have received with the response message of request message same sequence number may determine that whether network be connected to；(2)
It can be to network quality according to the two-way time (issue request message and receive the time difference of response message) of the secondary request-reply
It judges.
But part gateway equipment, only using sequence as conversion foundation, which has 2 or multiple at the same time
Sequence identical message cannot be handled correctly when NAT being needed to convert, and cause icmp response message that cannot correctly withdraw, into
And cause us that cannot make accurate judgment to network condition.
In view of this, the application is intended to provide ping method, storage medium, the terminal and server of a kind of multiplexing,
Call ping tool that can not correctly obtain when carrying out icmp request to same server simultaneously in multiple programs for the prior art
Response, and then decision problem correctly cannot be carried out to network condition.
Referring to the ping method that Fig. 1, Fig. 1 are a kind of multiplexings shown in one exemplary embodiment of the application process
Figure, this method are applied to include but is not limited to the network equipment itself, and this method may include step as described below.
S11: building icmp request message.
Wherein, icmp message may include: (1) type: account for 8；(2) 8 code: are accounted for；(3) examine and: account for 16；
(4) identifier；(5) sequence number.
Preceding 4 bytes of all messages of icmp are the same, altogether there are three field: i.e. type, code and examine with；But
It is that other remaining bytes are then different.
Wherein, 8 types and 8 code fields determine the type of icmp packet, including three kinds of situations together:
The first situation: code 0: type 8 indicates echo request (ping request).
Second situation: code 0: type 0 indicates echo response (ping response).
The third situation: Class1 1, code 0: time-out.
And 16 inspections and field: the inspection of the entire ICMP data packet including data and.
Therefore, icmp request message described in the present exemplary embodiment is the first above-mentioned situation.
S12: generating random number, and the random number is filled to the sequence-number field sequence of icmp request message.
Wherein it is preferred to which in the present embodiment, the generation random number includes:
S121: according to present system time, a nanoscale seed is generated；
Wherein, the seed of nanosecond is in order to which let us can obtain real random number.In Linux system, generate with
Machine number be using rand () function, but this random number generation function can not generate real random number, as program A is called
Ping tool generates random number filling sequence field using rand () function, if the random number generated is 3,6,9,
So program B calls ping tool, and it is also likely to be 3,6,9 that random number is generated using rand () function, and reason is rand letter
There is a definition to be called seed in number, rand function is to carry out a series of operations according to this seed to simulate a random number, I
Call directly rand function, then system will use the seed 1 of default to generate random number because require to generate every time with
The seed that machine number uses all is 1, therefore the random number that operation generation is repeated several times will be the same.Similarly, we can not specify
This seed is some fixed value.So we will ensure that this seed is every time different, could obtain truly
Random number.Therefore, we just (are accurate to nanosecond, each message can not with the time for generating this message when constructing icmp message
Can nanosecond not poor transmission simultaneously) it is used as seed.
S122: the random number of an a certain range is generated with the seed.
Using this kind of mode, mainly consider that the problem of present exemplary embodiment is solved is held simultaneously for multiple programs
Row ping operation, therefore present system time can be subjected to nanosecond extension first during generating random number, then again
It carries out random.When can have multiple requests at the same time using such mode, it also can guarantee that generated random number is not identical.
S13: icmp request message is sent.
After filling, icmp request message is sent.
More preferably, in the present embodiment, the method also includes the step of sending after icmp request message:
S14: icmp response message is received；
S15: the sequence-number field sequence in icmp response message, and the sequence number word with icmp request message are obtained
Section sequence is compared.
I.e. if after the icmp request message server response sent in step s 13, institute in icmp response message
Sequence number in the sequence number of carrying and our icmp request messages should be identical, due to we ensure that in icmp request message
Sequence number it is not identical, can be correct then our sequence numbers simultaneously in the icmp response message that receives will not be identical
Judge the ownership of the response.
Therefore, according to this mode, then exemplary embodiment just can solve present multi-process while call ping tool pair
The problem of same server can not normally receive icmp response when making requests.
And in another following preferred embodiments of the present exemplary embodiment, the ping tool for solving the prior art exists
When realizing multiple ping operation calls, needs to create multiple processes and system resource is made to use excessive problem.
Specifically, in the preferred embodiment, the method also includes the step of before the building icmp request messages:
Request to be built is added in icmp request chained list, and checks whether icmp socket is ready, is such as not ready to
It then creates for sending icmp request message and/or receiving the icmp socket of icmp response message；
The transmission icmp request message includes:
Whether have request need send, just issue the icmp request message when having request if checking in icmp request chained list.
Wherein, it checks whether socket initializes to finish and is mainly used for avoiding creating an extra socket, if deposited
In the socket created, then all icmp requests are all sent by the socket.
It avoids initializing excessive resource by the way of chained list and socket, and without creating multiple ping processes,
System resource can be saved to greatest extent and improve execution efficiency.It is especially needed in multiple processes while carrying out icmp request Shi Nengti
Reveal biggish odds for effectiveness and saves system resource advantage.For example:
Demand: process A, B, C are sometime needing to carry out icmp request
1 tradition ping tool
Process A calls ping tool, one ping tool processes of system creation, some related letters of ping tool initialization
Breath: creation one socket for communication, the process number for obtaining process A are used to fill the identifier etc. of icmp request message,
Similarly process B, C also will do it same process, so undoubtedly with regard to just enabling 3 ping tools, each ping work in system
Tool can all create socket.
The ping tool that 2 the application are realized
When A needs to send icmp request, ping tool can also initialize the socket for communication, but not take A again
Process number fill the identifier of request message, but unified this request message is filled using the process number of ping tool
Identifier (so when receiving response message, we only need to judge sequence field therein it is known that the response
Message is whose is replied to, and the random number effect that we generate lies also in this)；In addition to this, we and tradition ping tool
Difference, which also resides in us, will create an icmp request chained list for storing icmp request, then the request of process B, C come then,
Need to only the chained list be added in request by us, without creating socket again for the request of B, C, initialization icmp request message
Other fields etc..
Example as above: difference is that traditional ping tool creates 3 ping processes, and each ping process creates one
A socket requires each field for filling message repeatedly when constructing icmp message, such as icmp_type (report for communicating
Literary type, request message or response message), icmp_code (icmp subtype), icmp_id (call the process of ping
Process number), sequence field calculates message checking and waits, and our ping only needs to create a ping process, only
One socket is requested for all icmp, is only needed to fill sequence field when constructing icmp message every time, is calculated school
Test and.
System has lacked the process of starting, and creates socket less, that is, has saved system resource；It is filled when building message every time
Less field, that is, accelerate execution efficiency.
In addition, the method further includes initialization step in another preferred embodiment of the present exemplary embodiment:
Registration icmp requests relevant call back function, for requesting to call and initialize successfully or after failure in icmp
Timer is used for icmp requesting interval.
Specifically, in this step, the call back function that success or failure is called is mainly used for exporting intuitive result information,
As icmp is requested successfully:
PING www.qq.com(183.3.226.35):56 data bytes
64 bytes from 183.3.226.35:seq=0 ttl=52 time=31.227ms
We intuitively can see two-way time from output, and the general shorter expression link-quality of two-way time time is more
It is unobstructed.
If icmp request failure:
PING www.google.com(31.13.64.1):56 data bytes
---www.google.com ping statistics---
1 packets transmitted, 0 packets received, 100%packet loss.
And for requesting interval, requesting interval is the interval time for 2 icmp request messages.Program A needs to send
10 icmp request messages, the interval time for such as needing each message to send are 1s, then can be 1s by secondary timer setting.This when
Between interval just for same process call ping tool send request message the case where, and the same time generate request message be
Refer to the case where multiple processes call ping.
Therefore, if above-mentioned all preferred steps are integrated into a scheme, the method is specifically included:
S21: registration icmp requests relevant call back function, for request successfully or after failure calling and first in icmp
Beginningization timer is used for icmp requesting interval；
S22: when transmission icmp request message in need, request is added in the chained list of icmp request, and check
Whether icmp socket is ready, if being not ready to, creates icmp socket for sending and receiving icmp message；
S23: building icmp request message generates the seed of a nanosecond according to present system time, then is generated with this
The random number of one a certain range, and use the sequence field of the different random number filling icmp request message generated；
S24: whether have request need send, have and just issue the message when request if checking in icmp request chained list；Do not have such as
There is request to need to send, then repeatedly step S24 enters next timing cycle (preferably timing cycle, can also not timing period)
Detect whether that request needs to send；
S25: icmp request message is sent；
S26: if server responds, then sequence number entrained in the message of icmp response and our icmp request messages
In sequence number should be identical, due to we ensure that the sequence number in icmp request message is not identical, then we receive simultaneously
To icmp response message in sequence number will not be identical, can correctly judge the ownership of the response.
The another exemplary embodiment of the application provides a kind of storage medium, is stored thereon with computer instruction, the meter
The step of executing a kind of ping method of multiplexing when the instruction operation of calculation machine.
The another exemplary embodiment of the application provides a kind of device, including memory and processor, on the memory
It is stored with the computer instruction that can be run on the processor, when the processor runs the computer instruction described in execution
A kind of multiplexing ping method the step of.
Wherein, device can be the network equipment including such as router or AP, be also possible to other service terminals
Equipment.
Based on this understanding, the technical solution of the present embodiment substantially the part that contributes to existing technology in other words
Or the part of the technical solution can be embodied in the form of software products, which is stored in a storage medium
In, including some instructions are with so that device performs all or part of the steps of the method described in the various embodiments of the present invention.And it is preceding
The storage medium stated includes: USB flash disk, mobile hard disk, read-only memory (Read-OnlyMemory, ROM), random access memory
The various media that can store program code such as (RandomAccessMemory, RAM), magnetic or disk.
The another exemplary embodiment of the application provides a kind of ping answer method of multiplexing, and this method is applied to clothes
Business device itself, this method may include step as described below:
Receive icmp request message；
Generate icmp response message, sequence-number field sequence and the icmp request message of the icmp response message
Sequence-number field sequence is identical；
Send icmp response message；
The sequence-number field sequence of the icmp request message is the random number of filling.
Wherein, random number related description is referring to aforementioned exemplary embodiment, herein without repeating.
The another exemplary embodiment of the application provides a kind of storage medium, is stored thereon with computer instruction, the meter
The step of executing a kind of ping answer method of multiplexing when the instruction operation of calculation machine.
The another exemplary embodiment of the application provides a kind of server, including memory and processor, the memory
On be stored with the computer instruction that can be run on the processor, the processor executes institute when running the computer instruction
A kind of the step of ping answer method for the multiplexing stated.
Based on this understanding, the technical solution of the present embodiment substantially the part that contributes to existing technology in other words
Or the part of the technical solution can be embodied in the form of software products, which is stored in a storage medium
In, including some instructions are with so that device performs all or part of the steps of the method described in the various embodiments of the present invention.And it is preceding
The storage medium stated includes: USB flash disk, mobile hard disk, read-only memory (Read-OnlyMemory, ROM), random access memory
The various media that can store program code such as (RandomAccessMemory, RAM), magnetic or disk.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments, right
For those of ordinary skill in the art, can also make on the basis of the above description other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And thus amplify out it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of ping method of multiplexing, it is characterised in that: include:
Construct icmp request message；
Random number is generated, and the random number is filled to the sequence-number field sequence of icmp request message；
Send icmp request message.
2. a kind of ping method of multiplexing according to claim 1, it is characterised in that: the method also includes:
Receive icmp response message；
Obtain the sequence-number field sequence in icmp response message, and the sequence-number field with icmp request message
Sequence is compared.
3. a kind of ping method of multiplexing according to claim 1 or 2, it is characterised in that: the method also includes
The step of before the building icmp request message:
Request to be built is added in icmp request chained list, and checks whether icmp socket is ready, if being not ready to, is created
It builds for sending icmp request message and/or receiving the icmp socket of icmp response message；
The transmission icmp request message includes:
Whether have request need send, just issue the icmp request message when having request if checking in icmp request chained list.
4. a kind of ping method of multiplexing according to claim 1 or 2, it is characterised in that: the method is also wrapped
Include initialization step:
It registers icmp and requests relevant call back function, for request successfully or calling and initialization timing after failing in icmp
Device is used for icmp requesting interval.
5. a kind of ping method of multiplexing according to claim 1, it is characterised in that: the generation random number packet
It includes:
According to present system time, a nanoscale seed is generated；
The random number of an a certain range is generated with the seed.
6. a kind of storage medium, is stored thereon with computer instruction, it is characterised in that: the right of execution when computer instruction is run
Benefit require any one of 1~5 described in a kind of multiplexing ping method the step of.
7. a kind of device, including memory and processor, the meter that can be run on the processor is stored on the memory
Calculation machine instruction, which is characterized in that perform claim requires any one of 1~5 institute when the processor runs the computer instruction
A kind of the step of ping method for the multiplexing stated.
8. a kind of ping answer method of multiplexing, comprising:
Receive icmp request message；
Generate icmp response message, the sequence-number field sequence of the icmp response message and the sequence of icmp request message
Number field sequence is identical；
Send icmp response message；
It is characterized by:
The sequence-number field sequence of the icmp request message is the random number of filling.
9. a kind of storage medium, is stored thereon with computer instruction, it is characterised in that: the right of execution when computer instruction is run
Benefit require 8 described in a kind of multiplexing ping answer method the step of.
10. a kind of server, including memory and processor, be stored on the memory to run on the processor
Computer instruction, which is characterized in that one kind described in perform claim requirement 8 is more when the processor runs the computer instruction
The step of ping answer method of road multiplexing.
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| CN113890838A (en) * | 2021-09-24 | 2022-01-04 | 天津津航计算技术研究所 | Network connectivity judgment method based on ICMP (Internet control protocol) |
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| CN113890838A (en) * | 2021-09-24 | 2022-01-04 | 天津津航计算技术研究所 | Network connectivity judgment method based on ICMP (Internet control protocol) |
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