CN104270263B - A kind of maintaining method and system of TCP connections - Google Patents
A kind of maintaining method and system of TCP connections Download PDFInfo
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- CN104270263B CN104270263B CN201410484638.7A CN201410484638A CN104270263B CN 104270263 B CN104270263 B CN 104270263B CN 201410484638 A CN201410484638 A CN 201410484638A CN 104270263 B CN104270263 B CN 104270263B
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Abstract
This application provides the maintaining method and system of a kind of transmission control protocol TCP connection, wherein, methods described includes：TCP connections to be safeguarded in TCP agent are parsed, attribute information corresponding to TCP connections to be safeguarded described in acquisition；Wherein, the attribute information includes：IP and port numbers corresponding to the TCP connections to be safeguarded；Compared with by attribute information corresponding to the TCP connections to be safeguarded and the attribute information in well-known port list or having deleted attribute information in TCP lists；If the attribute information of the TCP connections to be safeguarded matches with the attribute information in the well-known port list, or the attribute information in TCP lists is deleted with described and has matched, the maintenance information for being used for establishing the TCP connections to be safeguarded in the TCP agent is then abandoned, with TCP establishment of connections to be safeguarded described in prevention.Pass through the problem of occupancy resource is safeguarded in TCP connections in the application TCP agent function, machine utilization is high.
Description
Technical field
The application is related to communication technical field, more particularly to a kind of TCP (Transmission in TCP agent function
Control Protocol, transmission control protocol) connection maintaining method and system.
Background technology
In TD-SCDMA network, in order to lift user unloading speed, improve user and perceive, added in access net side
TCP agent function.One user can establish multiple business, and each business may have multiple TCP connections.In TCP agent,
The regular maintenance flow of TCP connections is as follows：When network side receives descending packet from core net, by parsing data header
Field judges that the data are TCP segment.If TCP segment, then source IP, purpose that can be according to the message segment
The TCP that IP, source port number and destination slogan are internally safeguarded searches the TCP connections and whether there is in connecting.If it is present
Carry out corresponding TCP agent function treatment；If it does not exist, then can according to the source IP of the message segment, purpose IP, source port number and
Destination slogan newly safeguards a TCP link information in device interior, and the message segment in the follow-up TCP connections can then use
TCP agent function.
As can be seen here, in the routine maintenance procedure of above-mentioned TCP connections, if transport layer is TCP connections, and in network side
The TCP connections number that portion safeguards is not reaching to maximum connection number limitation, just newly creates one TCP connections letter of maintenance in network side
Cease, all message segments in the follow-up TCP connections will pass through TCP agent function treatment.
However, in actual use, there are very multiple TCP connections there was only a small amount of data transfer, or TCP connections presence
Time is very short, the data in these connections is unable to reach with the purpose of lifting user rate at all using TCP agent function, instead
And machine utilization can be increased, internal resource is taken, reduces the downloading rate of user.
The content of the invention
The application provides a kind of maintaining method and system of transmission control protocol TCP connection, to solve TCP in TCP agent
Connection takes a large amount of internal resources, increases machine utilization, the problem of reducing downloading rate.
In order to solve the above problems, this application discloses a kind of maintaining method of transmission control protocol TCP connection, including：
TCP connections to be safeguarded in TCP agent are parsed, attribute corresponding to TCP connections to be safeguarded described in acquisition is believed
Breath；Wherein, the attribute information includes：IP and port numbers corresponding to the TCP connections to be safeguarded；
By attribute information corresponding to the TCP connections to be safeguarded and the attribute information in well-known port list or delete
Attribute information in TCP lists is compared；Wherein, the attribute information in the well-known port list and described TCP has been deleted
The volume of transmitted data of the TCP connections of the corresponding instruction of attribute information in list, which is respectively less than, sets data transfer threshold value；
If the attribute information of the TCP connections to be safeguarded matches with the attribute information in the well-known port list, or
The attribute information in TCP lists is deleted with described and has matched, then abandoned to be used to establishing in the TCP agent and described wait to safeguard
The maintenance information of TCP connections, with TCP establishment of connections to be safeguarded described in prevention.
Alternatively, after attribute information step corresponding to TCP connections to be safeguarded described in the acquisition, methods described is also wrapped
Include：
By the port numbers in attribute information corresponding to the TCP connections to be safeguarded compared with setting port numbers threshold value；
Wherein, the setting port numbers threshold value is used to indicate whether port numbers are well-known port number.
Alternatively, in the port numbers by attribute information corresponding to the TCP connections to be safeguarded and setting port numbers
Threshold value is compared after step, and methods described also includes：
When the port numbers in attribute information corresponding to the TCP connections to be safeguarded are more than or equal to the setting port numbers threshold value
When, obtain successively in the multiple data transmission procedure carried out by the TCP connections to be safeguarded, each data transmission procedure is put down
Equal transmission rate；
By multiple average transmission rates respectively compared with standard transfer rate corresponding to the TCP connections to be safeguarded；
Record the number that average transmission rate is less than the data transmission procedure of the standard transfer rate；
When the number of record is more than or equal to setting number thresholding, by attribute corresponding to the TCP connections to be safeguarded
Information has deleted TCP lists described in adding.
Alternatively, the attribute by attribute information corresponding to the TCP connections to be safeguarded and well-known port list is believed
Breath or the attribute information deleted in TCP lists are compared, including：
When described when safeguarding that the port numbers in attribute information corresponding to TCP connections are less than the setting port numbers threshold value,
By attribute information corresponding to the TCP connections to be safeguarded compared with the attribute information in the well-known port list；
Or,
When the port numbers in attribute information corresponding to the TCP connections to be safeguarded are more than or equal to the setting port numbers threshold value
When, by attribute information corresponding to the TCP connections to be safeguarded compared with having deleted the attribute information in TCP lists.
Alternatively, parsed in the TCP connections to be safeguarded in TCP agent, TCP connections to be safeguarded described in acquisition
Before corresponding attribute information step, methods described also includes：
Parsed to receiving transmission data from core-network side, obtain the header field of the transmission data；
When the header field meets standard TCP segment requirement, generation is described to safeguard information.
Alternatively, in the attribute by attribute information corresponding to the TCP connections to be safeguarded and well-known port list
Information has been deleted attribute information in TCP lists and has been compared after step, and methods described also includes：
If attribute information corresponding to the TCP connections to be safeguarded and the attribute information in the well-known port list and described
The attribute information deleted in TCP lists mismatches, then,
Compared with attribute information corresponding to the TCP connections to be safeguarded is safeguarded into the attribute information in list with TCP；Its
In, the TCP safeguards that list includes：All volumes of transmitted data are more than or equal to the setting propagation threshold in the TCP agent
TCP connections attribute information；
If safeguarded from the TCP and find what attribute information corresponding with the TCP connections to be safeguarded matched in list
Attribute information, then safeguard that information is safeguarded to the TCP connections to be safeguarded according to described；
Otherwise,
According to it is described safeguard information connect with the TCP to be safeguarded corresponding to attribute information establish new TCP connections；And pass through
The new TCP connections carry out data transmission；
Attribute information corresponding to the new TCP connections is safeguarded in list added to the TCP.
Correspondingly, disclosed herein as well is a kind of maintenance system of transmission control protocol TCP connection, including：
Acquisition module, for being parsed to the TCP connections to be safeguarded in TCP agent, TCP connections to be safeguarded described in acquisition
Corresponding attribute information；Wherein, the attribute information includes：IP and port numbers corresponding to the TCP connections to be safeguarded；
First comparison module, for by attribute information corresponding to the TCP connections to be safeguarded and well-known port list
Attribute information or the attribute information deleted in TCP lists are compared；Wherein, the attribute letter in the well-known port list
Cease to be respectively less than with the TCP of the corresponding instruction of the attribute information deleted in the TCP lists volumes of transmitted data connected and set data
Propagation threshold；
Blocking module, for the attribute in the attribute information of the TCP connections to be safeguarded and the well-known port list
Information match, or when matching with the attribute information deleted in TCP lists, abandon and be used to build in the TCP agent
The maintenance information of the vertical TCP connections to be safeguarded, with TCP establishment of connections to be safeguarded described in prevention.
Alternatively, the system also includes：
Second comparison module, for the acquisition module obtain described in attribute information corresponding to TCP connections to be safeguarded it
Afterwards, by the port numbers in attribute information corresponding to the TCP connections to be safeguarded compared with setting port numbers threshold value；Wherein,
The setting port numbers threshold value is used to indicate whether port numbers are well-known port number.
Alternatively, the system also includes：
Speed acquisition module, used in the TCP connections to be safeguarded to be corresponded to attribute information in second comparison module
Port numbers compared with setting port numbers threshold value after, the end in attribute information corresponding to the TCP connections to be safeguarded
When slogan is more than or equal to the setting port numbers threshold value, the multiple data carried out by the TCP connections to be safeguarded are obtained successively
In transmitting procedure, the average transmission rate of each data transmission procedure；
3rd comparison module, for by multiple average transmission rates standard corresponding with the TCP connections to be safeguarded respectively
Transmission rate is compared；
Statistical module, for recording time of the average transmission rate less than the data transmission procedure of the standard transfer rate
Number；
Removing module, for when the number of record is more than or equal to setting number thresholding, the TCP to be safeguarded to be connected
Attribute information corresponding to connecing has deleted TCP lists described in adding.
Alternatively, first comparison module, including：
Well-known port comparison module, it is less than for the port numbers in attribute information corresponding to the TCP connections to be safeguarded
During the setting port numbers threshold value, by attribute information corresponding to the TCP connections to be safeguarded and the well-known port list
Attribute information is compared；
Port comparison module is deleted, is more than for the port numbers in attribute information corresponding to the TCP connections to be safeguarded
During equal to the setting port numbers threshold value, by attribute information corresponding to the TCP connections to be safeguarded and delete in TCP lists
Attribute information is compared.
Compared with prior art, the application includes advantages below：
The application in TCP agent when safeguarding that TCP connections are safeguarded, first will be corresponding to TCP connections be safeguarded
Attribute information and the attribute information in well-known port list or compared with having deleted attribute information in TCP lists, by institute
State what the attribute information in well-known port list connected with the TCP of the corresponding instruction of the attribute information deleted in TCP lists
Volume of transmitted data be respectively less than set data transfer threshold value, therefore, when attribute information corresponding to the TCP connections to be safeguarded with it is described
, can be with when attribute information in well-known port list matches or matched with the attribute information deleted in TCP lists
It is determined that the TCP connections to be safeguarded it is carried there is no mass data transmission demand using layer service, inside network side then not
The TCP link informations are safeguarded, that is, the maintenance information for being used for establishing the TCP connections to be safeguarded in the TCP agent are abandoned, with resistance
The only TCP establishment of connections to be safeguarded.Using the maintenance scheme of the TCP connections of the application, on the one hand, reducing equipment need not
The processing wanted, reduces machine utilization；Still further aspect, network side is limited for the TCP connections number of each service maintenance, can be with
The resource that unnecessary TCP connections take is discharged, and then limited resource is left for the TCP connections for needing to transmit mass data to make
With raising user unloading speed, improvement user perceives.
Brief description of the drawings
Fig. 1 is a kind of flow chart of the maintaining method of transmission control protocol TCP connection in the application first embodiment；
Fig. 2 is a kind of flow chart of the maintaining method of transmission control protocol TCP connection in the application second embodiment；
Fig. 3 is a kind of flow chart of the maintaining method of transmission control protocol TCP connection in the application 3rd embodiment；
Fig. 4 is a kind of structured flowchart of the maintenance system of transmission control protocol TCP connection in the application fourth embodiment；
Fig. 5 is a kind of structured flowchart of the maintenance system of transmission control protocol TCP connection in the embodiment of the application the 5th.
Embodiment
It is below in conjunction with the accompanying drawings and specific real to enable the above-mentioned purpose of the application, feature and advantage more obvious understandable
Mode is applied to be described in further detail the application.
Reference picture 1, show a kind of stream of the maintaining method of transmission control protocol TCP connection in the application first embodiment
Cheng Tu.In the present embodiment, the maintaining method of the transmission control protocol TCP connection includes：
Step 102, the TCP connections to be safeguarded in TCP agent are parsed, TCP connections to be safeguarded are corresponding described in acquisition
Attribute information.
In the present embodiment, the attribute information includes：IP and port numbers corresponding to the TCP connections to be safeguarded.Wherein,
The IP includes source IP and purpose IP；The port numbers can include source port number and destination slogan.
Step 104, by the attribute information in attribute information corresponding to the TCP connections to be safeguarded and well-known port list or
The attribute information deleted in TCP lists is compared.
Understand that port numbers are integer, and its scope is from 0 to 65535 according to standard ICP/IP protocol regulation.Usually, each
The corresponding service performed of port numbers is different, and volume of transmitted data corresponding to each service is also different, therefore, number corresponding to each port numbers
It is different according to transmission quantity.Well-known port then refers to the port for distributing to fixed service, i.e. service content is well-known end
Slogan.For example port 21 is assigned to FTP (FTP) services, port 25 is assigned to SMTP, and (simple mail transmits
Agreement) service, port 80 is assigned to HTTP service, and port 135 is assigned to RPC (remote procedure call) services etc..By
The service that execution is corresponded in well-known port is fixed, therefore, according to the service of port execution, it may be determined that each well-known end
Volume of transmitted data corresponding to mouthful.In the present embodiment, the TCP of the corresponding instruction of attribute information preserved in the well-known port list
The volume of transmitted data of connection is less than setting data transfer threshold value, e.g., port 7, port 9, port 11, port 13 etc..Preferably
Ground, the volume of transmitted data of the TCP connections of the corresponding instruction of the attribute information deleted in TCP lists pass again smaller than setting data
Defeated threshold value.
In the step 104 by the attribute in attribute information corresponding to the TCP connections to be safeguarded and well-known port list
After information or the attribute information deleted in TCP lists are compared, if attribute information corresponding to the TCP connections to be safeguarded
Match with the attribute information in the well-known port list, or deleted the attribute information in TCP lists with described and match,
Then perform step 106；Otherwise, normal TCP agent maintenance process is performed.
Step 106, the maintenance information for being used for establishing the TCP connections to be safeguarded in the TCP agent is abandoned, to prevent
State TCP establishment of connections to be safeguarded.
In summary, the application when safeguarding that TCP connections are safeguarded, is first connecting TCP to be safeguarded in TCP agent
Attribute information corresponding to connecing and the attribute information in well-known port list have been deleted the attribute information in TCP lists and compared
Compared with because the attribute information in the well-known port list and the attribute information deleted in TCP lists correspond to instruction
The volume of transmitted data of TCP connections, which is respectively less than, sets data transfer threshold value, therefore, when the attribute information of the TCP connections to be safeguarded
Match with the attribute information in the well-known port list or deleted the attribute information in TCP lists with described and match
When, it may be determined that the carried application layer service of the TCP connections to be safeguarded does not have mass data transmission demand, in network side
Portion does not safeguard the TCP link informations then, that is, abandons and be used for the maintenance letter for establishing the TCP connections to be safeguarded in the TCP agent
Breath, with TCP establishment of connections to be safeguarded described in prevention.The maintenance side connected using transmission control protocol TCP described in the present embodiment
Method, on the one hand, reduce the unnecessary processing of equipment, reduce machine utilization；Still further aspect, network side are tieed up for each business
The TCP connections number of shield is limited, can discharge the resource that unnecessary TCP connections take, and then leave limited resource for need
The TCP connections for transmitting mass data use, and improve user unloading speed, improve user and perceive.
Reference picture 2, show a kind of stream of the maintaining method of transmission control protocol TCP connection in the application second embodiment
Cheng Tu.In the present embodiment, the maintaining method of the transmission control protocol TCP connection includes：
Step 202, RNC (Radio Network Controller, radio network controller) from core-network side to receiving
Parsed to transmission data, obtain the header field of the transmission data.When the header field meets standard TCP segment
It is required that when, perform step 204.
Usually, when TCP agent is safeguarded, when network side RNC receives descending packet from core net, first
Judge that the data are TCP segment by parsing data header field.If TCP segment, then TCP agent is carried out
Safeguard.
Step 204, information is safeguarded in RNC generations.
Step 206, RNC parses to the TCP connections to be safeguarded in TCP agent, TCP connections pair to be safeguarded described in acquisition
The attribute information answered.Wherein, the attribute information includes：IP and port numbers corresponding to the TCP connections to be safeguarded.
Step 208, RNC by the port numbers in attribute information corresponding to the TCP connections to be safeguarded and sets port numbers threshold
Value is compared.
In the present embodiment, the setting port numbers threshold value is used to indicate whether port numbers are well-known port number.Usually,
The setting port numbers threshold value can be 1024, i.e., when port numbers are more than or equal to 1024, port is well-known port.
It is preferred that when the port numbers in attribute information corresponding to the TCP connections to be safeguarded are less than the setting port numbers
During threshold value, step 210 is performed；When the port numbers in attribute information corresponding to the TCP connections to be safeguarded are more than or equal to described set
During the slogan threshold value of fixed end, step 212 is performed.
Step 210, RNC is by the category in attribute information corresponding to the TCP connections to be safeguarded and the well-known port list
Property information is compared.Wherein, the volume of transmitted data of the TCP connections of the corresponding instruction of the attribute information in the well-known port list
Respectively less than set data transfer threshold value.
In the present embodiment, RNC is by attribute information corresponding to the TCP connections to be safeguarded and the well-known port list
Attribute information when being compared, because port numbers corresponding to the attribute information in the well-known port list are well-known ports,
Therefore when relatively, can be by the port numbers in attribute information corresponding to the TCP connections to be safeguarded and the well-known port list
In attribute information corresponding to port numbers be compared.That is, TCP can be only preserved in the well-known port list
Port number information corresponding to connection.
It is preferred that when the port numbers in attribute information corresponding to the TCP connections to be safeguarded are less than the setting port numbers
During threshold value, it may be determined that port corresponding to the TCP connections to be safeguarded is known port, because TCP corresponding to known port connects
Connect being to determine using layer service of being carried；And in the present embodiment, the attribute information in the well-known port list is corresponding
The volume of transmitted data using layer service that is carried of TCP connections be less than setting data transfer threshold value.Therefore wait to safeguard when described
Port numbers in attribute information corresponding to TCP connections are less than the setting port numbers threshold value, and the TCP connections to be safeguarded are corresponding
Attribute information matched with the attribute information in the well-known port list, it is determined that the data of the TCP connections to be safeguarded pass
Throughput rate is less than setting data transfer threshold value, performs step 214, and RNC is abandoned and safeguarded information.When the TCP connections to be safeguarded are corresponding
Attribute information in port numbers be less than the setting port numbers threshold value, and attribute information corresponding to the TCP connections to be safeguarded
When being mismatched with the attribute information in the well-known port list, it is determined that the volume of transmitted data of the TCP connections to be safeguarded is big
In equal to setting data transfer threshold value, step 218, RNC TCP connections to be safeguarded according to safeguarding maintenance of information are performed.
Step 212, RNC by attribute information corresponding to the TCP connections to be safeguarded and has deleted the attribute letter in TCP lists
Breath is compared.Wherein, the volume of transmitted data of the TCP connections of the corresponding instruction of the attribute information deleted in TCP lists is equal
Less than setting data transfer threshold value.
It is preferred that RNC is by attribute information corresponding to the TCP connections to be safeguarded and has deleted the attribute letter in TCP lists
, it is necessary to be compared successively to the IP under attribute information and port numbers when breath is compared, wherein, the IP includes：Source IP and
Purpose IP；The port numbers include：Source port number and destination slogan.
In the present embodiment, if attribute information corresponding to the TCP connections to be safeguarded has been deleted in TCP lists with described
Attribute information matches, then performs step 214.If attribute information corresponding to the TCP connections to be safeguarded has deleted TCP with described
Attribute information in list mismatches, and performs step 216.
Step 214, RNC abandons the maintenance information for being used for establishing the TCP connections to be safeguarded in the TCP agent, with resistance
The only TCP establishment of connections to be safeguarded.
Step 216, RNC safeguards attribute information corresponding to the TCP connections to be safeguarded and TCP the attribute information in list
It is compared.
In the present embodiment, the TCP safeguards that list includes：In the TCP agent all volumes of transmitted data be more than etc.
Attribute information corresponding to TCP connections in the setting propagation threshold.Explanation is needed exist for, TCP safeguards the category in list
Port numbers in property information can be well-known port, e.g., port 20, port 25, port 80 etc..
If attribute information phase corresponding with the TCP connections to be safeguarded is found in list it is preferred that being safeguarded from the TCP
The attribute information of matching, then perform step 218；Otherwise, step 220 is performed.
Step 218, RNC safeguards that information is safeguarded to the TCP connections to be safeguarded according to described.
Step 220, RNC according to it is described safeguard information connect with the TCP to be safeguarded corresponding to attribute information establish new TCP
Connection.
Step 222, RNC safeguards attribute information corresponding to the TCP connections to be safeguarded in list added to the TCP.
Explanation is needed exist for, when the port numbers in attribute information corresponding to the TCP connections to be safeguarded are more than or equal to
During the setting port numbers threshold value, step 216 can also be first carried out, RNC is by attribute information corresponding to the TCP connections to be safeguarded
Compared with the attribute information in list being safeguarded with TCP.Found if being safeguarded from the TCP in list and the TCP to be safeguarded
The attribute information that attribute information corresponding to connection matches, then perform step 218；Otherwise, step 212 is performed, RNC treats described
Safeguard that attribute information is compared with having deleted the attribute information in TCP lists corresponding to TCP connections.As the TCP to be safeguarded
When attribute information corresponding to connection and the attribute information deleted in TCP lists mismatch, step 220 is performed.The present embodiment pair
This is not restricted.
In summary, the application when safeguarding that TCP connections are safeguarded, is first connecting TCP to be safeguarded in TCP agent
The attribute information connect and the attribute information in well-known port list or compared with having deleted attribute information in TCP lists, by
The TCP of attribute information and the corresponding instruction of the attribute information deleted in TCP lists in the well-known port list connects
The volume of transmitted data connect, which is respectively less than, sets data transfer threshold value, therefore, when attribute information corresponding to the TCP connections to be safeguarded and
When attribute information in the well-known port list matches or matched with the attribute information deleted in TCP lists,
The carried application layer service of TCP connections to be safeguarded described in can determining does not have mass data transmission demand, inside network side
Do not safeguard the TCP link informations then, that is, abandon the maintenance information for being used for establishing the TCP connections to be safeguarded in the TCP agent,
With TCP establishment of connections to be safeguarded described in prevention.The maintaining method connected using transmission control protocol TCP described in the present embodiment,
On the one hand, reduce the unnecessary processing of equipment, reduce machine utilization；Still further aspect, network side are each service maintenance
TCP connections number it is limited, the resource that unnecessary TCP connections take can be discharged, and then leave limited resource for needs
The TCP connections for transmitting mass data use, and improve user unloading speed, improve user and perceive.
Reference picture 3, show a kind of stream of the maintaining method of transmission control protocol TCP connection in the application 3rd embodiment
Cheng Tu.In the present embodiment, the maintaining method of the transmission control protocol TCP connection includes：
Step 302, RNC (Radio Network Controller, radio network controller) from core-network side to receiving
Parsed to transmission data, obtain the header field of the transmission data.When the header field meets standard TCP segment
It is required that when, perform step 304.
Step 304, information is safeguarded in RNC generations.
Step 306, RNC parses to the TCP connections to be safeguarded in TCP agent, TCP connections pair to be safeguarded described in acquisition
The attribute information answered.Wherein, the attribute information includes：IP and port numbers corresponding to the TCP connections to be safeguarded.
Step 308, RNC by the port numbers in attribute information corresponding to the TCP connections to be safeguarded and sets port numbers threshold
Value is compared.Wherein, the setting port numbers threshold value is used to indicate whether port numbers are well-known port number.
It is preferred that when the port numbers in attribute information corresponding to the TCP connections to be safeguarded are less than the setting port numbers
During threshold value, step 310 is performed；When the port numbers in attribute information corresponding to the TCP connections to be safeguarded are more than or equal to described set
During the slogan threshold value of fixed end, step 312 is performed.
Step 310, RNC is by the category in attribute information corresponding to the TCP connections to be safeguarded and the well-known port list
Property information is compared.Wherein, the volume of transmitted data of the TCP connections of the corresponding instruction of the attribute information in the well-known port list
Less than setting data transfer threshold value.
In the present embodiment, when the port numbers in attribute information corresponding to the TCP connections to be safeguarded are less than the setting
During port numbers threshold value, it may be determined that port corresponding to the TCP connections to be safeguarded is known port, due to corresponding to known port
What what TCP connections were carried be to determine using layer service；And in the present embodiment, the attribute information in the well-known port list
The volume of transmitted data using layer service that corresponding TCP connections are carried is less than setting data transfer threshold value.Therefore wait to tie up when described
The port numbers protected in attribute information corresponding to TCP connections are less than the setting port numbers threshold value, and the TCP connections pair to be safeguarded
The attribute information answered matches with the attribute information in the well-known port list, it is determined that the data of the TCP connections to be safeguarded
Transmission quantity is less than setting data transfer threshold value, performs step 324, and RNC is abandoned and safeguarded information.When the TCP connections pair to be safeguarded
Port numbers in the attribute information answered are less than the setting port numbers threshold value, and attribute corresponding to the TCP connections to be safeguarded is believed
When breath mismatches with the attribute information in the well-known port list, it is determined that the volume of transmitted data of the TCP connections to be safeguarded
More than or equal to setting data transfer threshold value, General Maintenance flow is performed：RNC TCP to be safeguarded according to safeguarding maintenance of information connect
Connect.
Step 312, RNC searched in TCP safeguards list described in TCP connections to be safeguarded attribute information.
It is described when TCP connections are safeguarded when being found during RNC safeguards list in TCP, then perform General Maintenance flow.When
RNC is not finding described when the attribute information of TCP connections is safeguarded, then execution step 314 during TCP safeguards list.
Step 314, RNC by attribute information corresponding to the TCP connections to be safeguarded and has deleted the attribute letter in TCP lists
Breath is compared.
If attribute information corresponding to the TCP connections to be safeguarded matches with having deleted the attribute information in TCP lists,
Perform step 324.Otherwise, step 316. is performed
Step 316, RNC is obtained in the multiple data transmission procedure carried out by the TCP connections to be safeguarded successively, every time
The average transmission rate of data transmission procedure.
Step 318, RNC is by multiple average transmission rates standard transmission speed corresponding with the TCP connections to be safeguarded respectively
Rate is compared.
Step 320, RNC records the number that average transmission rate is less than the data transmission procedure of the standard transfer rate.
Step 322, when the number of record is more than or equal to setting number thresholding, RNC is by the TCP connections to be safeguarded
Corresponding attribute information has deleted TCP lists described in adding.I.e., it is possible to think attribute letter corresponding to the TCP connections to be safeguarded
Breath is to have deleted the attribute information in TCP lists with described and match.
Explanation is needed exist for, RNC also establishes the TCP connections to be safeguarded temporarily while step 316 is performed
Corresponding connection, and carried out data transmission using the connection established temporarily.Specific implementation process can be as follows：
It it is generation first when port numbers corresponding to a certain TCP connections in TCP agent are more than or equal to 1024 and TCP connections
Reason in use, then first internally safeguard the TCP connections, i.e., foundation described in TCP connections corresponding to TCP connections to be safeguarded (e.g.,
TCPX connections).The TCPX connections are stored in TCP and safeguard in list that (now, TCP safeguards that list includes the TCP by RNC
All volumes of transmitted data are more than or equal to the attribute information of the TCP connections of the setting propagation threshold in agency, and wouldn't know
Attribute information corresponding to the TCPX connections of volume of transmitted data size)；Meanwhile carried out data transmission using the TCPX connections.
Further, RNC is obtained in the multiple data transmission procedure carried out by the TCPX connections, and data pass each time
The average transmission rate (e.g., descending average transmission rate) of defeated process, when the multiple data carried out by the TCPX connections pass
Defeated average transmission rate is less than or equal to standard transfer rate corresponding to the TCPX connections, and average transmission rate is continuously less than
When number equal to standard transfer rate corresponding to the TCP connections is more than or equal to setting number thresholding, then the TCP generations are abandoned
It is used for the maintenance information for establishing the TCPX connections in reason, with TCP establishment of connections to be safeguarded described in prevention.Meanwhile by described in
Attribute information corresponding to TCP connections to be safeguarded is added to described deleted in TCP lists.Described wait to safeguard when getting again
During TCP connections, attribute information directly can be matched in TCP lists from described deleted, i.e., directly abandoned in the TCP agent
For establishing the maintenance information of the TCP connections to be safeguarded, TCP establishment of connections to be safeguarded described in prevention.
It is preferred that for example, number thresholding is set as 5 times.If the TCPX is connected to continuous 5 data transmission procedures
In, the average transmission rate of the TCPX connections is respectively less than standard transfer rate, then believes attribute corresponding to the TCPX connections
Breath has been deleted in TCP lists added to described.If the TCPX is connected in continuous 4 data transmission procedures, the TCPX
The average transmission rate of connection is respectively less than standard transfer rate, still, in the 5th data transmission procedure, the TCPX connections
Average transmission rate be more than standard transfer rate, then the counting of first 4 times is reset, when next time, average transmission rate is respectively less than
When the data transmission procedure of standard transfer rate occurs, restart to count.
Step 324, RNC abandons the maintenance information for being used for establishing the TCP connections to be safeguarded in the TCP agent, with resistance
The only TCP establishment of connections to be safeguarded.
In summary, the application when safeguarding that TCP connections are safeguarded, is first connecting TCP to be safeguarded in TCP agent
Attribute information corresponding to connecing and the attribute information in well-known port list have been deleted the attribute information in TCP lists and compared
Compared with because the attribute information in the well-known port list and the attribute information deleted in TCP lists correspond to instruction
The volume of transmitted data of TCP connections, which is respectively less than, sets data transfer threshold value, therefore, when attribute corresponding to the TCP connections to be safeguarded
Information match with the attribute information in the well-known port list or with the attribute information phase deleted in TCP lists
Timing, it may be determined that the carried application layer service of the TCP connections to be safeguarded does not have mass data transmission demand, in network side
It is internal then do not safeguard the TCP link informations, that is, abandon the maintenance for being used for establishing the TCP connections to be safeguarded in the TCP agent
Information, with TCP establishment of connections to be safeguarded described in prevention.The maintenance connected using transmission control protocol TCP described in the present embodiment
Method, on the one hand, reduce the unnecessary processing of equipment, reduce machine utilization；Still further aspect, network side are each business
The TCP connections number of maintenance is limited, can discharge the resource that unnecessary TCP connections take, and then limited resource is left for
Need the TCP connections for transmitting mass data to use, improve user unloading speed, improve user and perceive.
Further, if the port numbers in attribute information corresponding to the TCP connections to be safeguarded are not well-known port numbers,
The TCP connections first then are safeguarded in device interior, subsequently through the Mean Speed of the TCP connections to be safeguarded and standard transmission is fast
Rate is compared, if the TCP connections Mean Speed to be safeguarded be less than or equal to standard transfer rate lasting number be more than etc.
When number thresholding is set, then the information of the TCP connections to be safeguarded is added and deleted in TCP lists, do not continue to carry out
Safeguard.That is, TCP connections to be safeguarded described in being deleted in the TCP connections of network side internal maintenance, the follow-up TCP to be safeguarded connect
The data connected will not enter TCP agent function.Resource is further discharged, improves user unloading speed.
Reference picture 4, show a kind of knot of the maintenance system of transmission control protocol TCP connection in the application fourth embodiment
Structure block diagram.In the present embodiment, the system includes：
Acquisition module 402, for being parsed to the TCP connections to be safeguarded in TCP agent, TCP to be safeguarded described in acquisition
Attribute information corresponding to connection.Wherein, the attribute information includes：IP and port numbers corresponding to the TCP connections to be safeguarded；
First comparison module 404, for by attribute information corresponding to the TCP connections to be safeguarded and well-known port list
Attribute information or the attribute information deleted in TCP lists be compared.
Wherein, the attribute information in the well-known port list and the attribute information deleted in TCP lists are corresponding
TCP connections volume of transmitted data be respectively less than set data transfer threshold value.
Blocking module 406, in attribute information corresponding to the TCP connections to be safeguarded and the well-known port list
Attribute information match, or when matching with the attribute information deleted in TCP lists, abandon in the TCP agent
For establishing the maintenance information of the TCP connections to be safeguarded, with TCP establishment of connections to be safeguarded described in prevention.
In summary, the application when safeguarding that TCP connections are safeguarded, is first connecting TCP to be safeguarded in TCP agent
Attribute information corresponding to connecing and the attribute information in well-known port list have been deleted the attribute information in TCP lists and compared
Compared with because the attribute information in the well-known port list and the attribute information deleted in TCP lists correspond to instruction
The volume of transmitted data of TCP connections, which is respectively less than, sets data transfer threshold value, therefore, when the attribute information of the TCP connections to be safeguarded
Match with the attribute information in the well-known port list or deleted the attribute information in TCP lists with described and match
When, it may be determined that the carried application layer service of the TCP connections to be safeguarded does not have mass data transmission demand, in network side
Portion does not safeguard the TCP link informations then, that is, abandons and be used for the maintenance letter for establishing the TCP connections to be safeguarded in the TCP agent
Breath, with TCP establishment of connections to be safeguarded described in prevention.The maintenance system connected using transmission control protocol TCP described in the present embodiment
System, on the one hand, reduce the unnecessary processing of equipment, reduce machine utilization；Still further aspect, network side are tieed up for each business
The TCP connections number of shield is limited, can discharge the resource that unnecessary TCP connections take, and then leave limited resource for need
The TCP connections for transmitting mass data use, and improve user unloading speed, improve user and perceive.
Reference picture 5, show a kind of knot of the maintenance system of transmission control protocol TCP connection in the embodiment of the application the 5th
Structure block diagram.In the present embodiment, the system includes：
Data resolution module 502, for being parsed to receiving transmission data from core-network side, obtain the transmission number
According to header field.
Information generating module 504 is safeguarded, for when the header field meets standard TCP segment requirement, generation to be tieed up
Protect information.
Acquisition module 506, for being parsed to the TCP connections to be safeguarded in TCP agent, TCP to be safeguarded described in acquisition
Attribute information corresponding to connection.Wherein, the attribute information includes：IP and port numbers corresponding to the TCP connections to be safeguarded.
Second comparison module 508, for by the port numbers in attribute information corresponding to the TCP connections to be safeguarded and setting
Port numbers threshold value is compared.Wherein, the setting port numbers threshold value is used to indicate whether port numbers are well-known port number.
First comparison module 510, for by attribute information corresponding to the TCP connections to be safeguarded and well-known port list
Attribute information or the attribute information deleted in TCP lists be compared.Wherein, the attribute letter in the well-known port list
The volume of transmitted data that breath connects with TCP corresponding to the attribute information deleted in TCP lists, which is respectively less than, sets data transfer
Threshold value.
In the present embodiment, first comparison module 510 includes：
Well-known port comparison module 5102, for the port numbers in attribute information corresponding to the TCP connections to be safeguarded
During less than the setting port numbers threshold value, by attribute information corresponding to the TCP connections to be safeguarded and the well-known port list
In attribute information be compared.
Port comparison module 5104 is deleted, for the port numbers in attribute information corresponding to the TCP connections to be safeguarded
During more than or equal to the setting port numbers threshold value, by attribute information corresponding to the TCP connections to be safeguarded and TCP lists have been deleted
In attribute information be compared.
It is preferred that in the present embodiment, it will belong in second comparison module 508 corresponding to the TCP connections to be safeguarded
Property information in port numbers compared with setting port numbers threshold value after, if comparative result is the TCP connections pair to be safeguarded
Port numbers in the attribute information answered are more than or equal to the setting port numbers threshold value, can perform speed acquisition module 512.
Speed acquisition module 512, for obtaining the multiple data transfer mistake carried out by the TCP connections to be safeguarded successively
Cheng Zhong, the average transmission rate of each data transmission procedure.
3rd comparison module 514, for by multiple average transmission rates mark corresponding with the TCP connections to be safeguarded respectively
Quasi- transmission rate is compared.
Statistical module 516, for recording average transmission rate less than the data transmission procedure of the standard transfer rate
Number.
Removing module 518, for when the number of record is more than or equal to setting number thresholding, waiting to safeguard by described
The attribute information of TCP connections has deleted TCP lists described in adding.I.e., it is believed that the band safeguards attribute information corresponding to TCP connections
The attribute information in TCP lists is deleted with described and has matched.
In the present embodiment, when in attribute information corresponding to the TCP connections to be safeguarded and the well-known port list
Attribute information matches, or when matching with the attribute information deleted in TCP lists, performs blocking module 520, work as institute
Attribute information corresponding to TCP connections to be safeguarded is stated to arrange with the attribute information in the well-known port list and the TCP that deleted
When attribute information in table mismatches, the 4th comparison module 522 is performed.
Blocking module 520 is performed, for abandoning the maintenance for being used for establishing the TCP connections to be safeguarded in the TCP agent
Information, with TCP establishment of connections to be safeguarded described in prevention.
4th comparison module 522, for attribute information corresponding to the TCP connections to be safeguarded and TCP to be safeguarded in list
Attribute information be compared.Wherein, the TCP safeguards that list includes：In the TCP agent all volumes of transmitted data be more than etc.
In the attribute information of the TCP connections of the setting propagation threshold.
In the present embodiment, if safeguarding the attribute information for finding in list and being connected with the TCP to be safeguarded from the TCP
The attribute information to match, then information is safeguarded according to described, the TCP connections to be safeguarded described in foundation in the TCP agent.It is no
Then, according to it is described safeguard information connect with the TCP to be safeguarded corresponding to attribute information establish new TCP connections；And by described in
Port numbers corresponding to new TCP connections are safeguarded in list added to the TCP.Wherein, the attribute information includes：It is described to wait to tie up
Protect IP and port numbers corresponding to TCP connections.Wherein, the IP includes：Source IP and purpose IP；The port numbers include：Source port
Number and destination slogan.
In summary, the application when safeguarding that TCP connections are safeguarded, is first connecting TCP to be safeguarded in TCP agent
Attribute information corresponding to connecing and the attribute information in well-known port list have been deleted the attribute information in TCP lists and compared
Compared with because the attribute information in the well-known port list and the attribute information deleted in TCP lists correspond to instruction
The volume of transmitted data of TCP connections, which is respectively less than, sets data transfer threshold value, therefore, when the attribute information of the TCP connections to be safeguarded
Match with the attribute information in the well-known port list or deleted the attribute information in TCP lists with described and match
When, it may be determined that the carried application layer service of the TCP connections to be safeguarded does not have mass data transmission demand, in network side
Portion does not safeguard the TCP link informations then, that is, abandons and be used for the maintenance letter for establishing the TCP connections to be safeguarded in the TCP agent
Breath, with TCP establishment of connections to be safeguarded described in prevention.The maintenance system connected using transmission control protocol TCP described in the present embodiment
System, on the one hand, reduce the unnecessary processing of equipment, reduce machine utilization；Still further aspect, network side are tieed up for each business
The TCP connections number of shield is limited, can discharge the resource that unnecessary TCP connections take, and then leave limited resource for need
The TCP connections for transmitting mass data use, and improve user unloading speed, improve user and perceive.
Further, if the port numbers in attribute information corresponding to the TCP connections to be safeguarded are not well-known port numbers,
The TCP connections first then are safeguarded in device interior, subsequently through the Mean Speed of the TCP connections to be safeguarded and standard transmission is fast
Rate is compared, if the TCP connections Mean Speed to be safeguarded be less than or equal to standard transfer rate lasting number be more than etc.
When number thresholding is set, then the attribute information of the TCP connections to be safeguarded is added and deleted in TCP lists, do not continued to
Safeguarded.That is, TCP connections to be safeguarded described in being deleted in the TCP connections of network side internal maintenance, it is subsequently described to wait to safeguard
Data in TCP connections will not enter TCP agent function.Resource is further discharged, improves user unloading speed.
For system embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, it is related
Part illustrates referring to the part of embodiment of the method.
Each embodiment in this specification is described by the way of progressive, what each embodiment stressed be with
The difference of other embodiment, between each embodiment identical similar part mutually referring to.
Above to a kind of maintaining method and system of transmission control protocol TCP connection provided herein, carry out in detail
Introduce, specific case used herein is set forth to the principle and embodiment of the application, the explanation of above example
It is only intended to help and understands the present processes and its core concept；Meanwhile for those of ordinary skill in the art, according to this
The thought of application, there will be changes in specific embodiments and applications, in summary, this specification content should
It is interpreted as the limitation to the application.
Claims (10)
1. a kind of maintaining method of transmission control protocol TCP connection, it is characterised in that methods described includes：
TCP connections to be safeguarded in TCP agent are parsed, attribute information corresponding to TCP connections to be safeguarded described in acquisition；Its
In, the attribute information includes：IP and port numbers corresponding to the TCP connections to be safeguarded；
By the attribute information in attribute information corresponding to the TCP connections to be safeguarded and well-known port list or TCP row are deleted
Attribute information in table is compared；Wherein, the attribute information in the well-known port list and described TCP lists have been deleted
In the volume of transmitted data of TCP connections of the corresponding instruction of attribute information be respectively less than setting data transfer threshold value；
If the attribute information of the TCP connections to be safeguarded matches with the attribute information in the well-known port list, or with institute
State the attribute information deleted in TCP lists to match, then abandon and be used to establish the TCP companies to be safeguarded in the TCP agent
The maintenance information connect, with TCP establishment of connections to be safeguarded described in prevention.
2. according to the method for claim 1, it is characterised in that belonging to corresponding to TCP connections to be safeguarded described in the acquisition
After property information Step, methods described also includes：
By the port numbers in attribute information corresponding to the TCP connections to be safeguarded compared with setting port numbers threshold value；Wherein,
The setting port numbers threshold value is used to indicate whether port numbers are well-known port number.
3. according to the method for claim 2, it is characterised in that described by attribute corresponding to the TCP connections to be safeguarded
Compared with setting port numbers threshold value after step, methods described also includes port numbers in information：
When described when safeguarding that the port numbers in attribute information corresponding to TCP connections are more than or equal to the setting port numbers threshold value,
In TCP safeguards list search described in TCP connections to be safeguarded attribute information, if safeguarded from the TCP found in list and
The attribute information that attribute information corresponding to the TCP connections to be safeguarded matches, then safeguard that information is waited to tie up to described according to described
Shield TCP connections are safeguarded；
Otherwise,
By attribute information is compared with having deleted the attribute information in TCP lists corresponding to the TCP connections to be safeguarded, if institute
Attribute information corresponding to stating TCP connections to be safeguarded matches with having deleted the attribute information in TCP lists, then abandons the TCP
It is used for the maintenance information for establishing the TCP connections to be safeguarded in agency, with TCP establishment of connections to be safeguarded described in prevention；
Otherwise,
Obtain successively in the multiple data transmission procedure carried out by the TCP connections to be safeguarded, each data transmission procedure
Average transmission rate；
By multiple average transmission rates respectively compared with standard transfer rate corresponding to the TCP connections to be safeguarded；
Record the number that average transmission rate is less than the data transmission procedure of the standard transfer rate；
When the number of record is more than or equal to setting number thresholding, by attribute information corresponding to the TCP connections to be safeguarded
TCP lists have been deleted described in adding.
4. according to the method in claim 2 or 3, it is characterised in that described by attribute corresponding to the TCP connections to be safeguarded
Information and the attribute information in well-known port list or compared with having deleted attribute information in TCP lists, including：
When described when safeguarding that the port numbers in attribute information corresponding to TCP connections are less than the setting port numbers threshold value, by institute
Attribute information corresponding to TCP connections to be safeguarded is stated compared with the attribute information in the well-known port list；
Or,
When described when safeguarding that the port numbers in attribute information corresponding to TCP connections are more than or equal to the setting port numbers threshold value,
By attribute information corresponding to the TCP connections to be safeguarded compared with having deleted the attribute information in TCP lists.
5. according to the method for claim 1, it is characterised in that carried out in the TCP connections to be safeguarded in TCP agent
Parse, before attribute information step corresponding to TCP connections to be safeguarded described in acquisition, methods described also includes：
Parsed to receiving transmission data from core-network side, obtain the header field of the transmission data；
When the header field meets standard TCP segment requirement, generation is described to safeguard information.
6. according to the method for claim 1, it is characterised in that described by attribute corresponding to the TCP connections to be safeguarded
Information and the attribute information in well-known port list have been deleted in TCP lists compared with attribute information after step, described
Method also includes：
If attribute information corresponding to the TCP connections to be safeguarded and the attribute information in the well-known port list and described having deleted
Except the attribute information in TCP lists mismatches, then,
Compared with attribute information corresponding to the TCP connections to be safeguarded is safeguarded into the attribute information in list with TCP；Wherein,
The TCP safeguards that list includes：All volumes of transmitted data are more than or equal to the setting data transfer threshold value in the TCP agent
TCP connections attribute information；
If safeguarded from the TCP and the attribute that attribute information corresponding with the TCP connections to be safeguarded matches is found in list
Information, then safeguard that information is safeguarded to the TCP connections to be safeguarded according to described；
Otherwise,
According to it is described safeguard information connect with the TCP to be safeguarded corresponding to attribute information establish new TCP connections；And by described
New TCP connections carry out data transmission；
Attribute information corresponding to the new TCP connections is safeguarded in list added to the TCP.
7. a kind of maintenance system of transmission control protocol TCP connection, it is characterised in that the system includes：
Acquisition module, for being parsed to the TCP connections to be safeguarded in TCP agent, TCP connections to be safeguarded are corresponding described in acquisition
Attribute information；Wherein, the attribute information includes：IP and port numbers corresponding to the TCP connections to be safeguarded；
First comparison module, for by the attribute in attribute information corresponding to the TCP connections to be safeguarded and well-known port list
Information or the attribute information deleted in TCP lists are compared；Wherein, the attribute information in the well-known port list and
The volume of transmitted data of the TCP connections of the corresponding instruction of the attribute information deleted in TCP lists, which is respectively less than, sets data transfer
Threshold value；
Blocking module, for the attribute information in the attribute information of the TCP connections to be safeguarded and the well-known port list
When matching, or matching with the attribute information deleted in TCP lists, abandon and be used to establish institute in the TCP agent
The maintenance information of TCP connections to be safeguarded is stated, with TCP establishment of connections to be safeguarded described in prevention.
8. system according to claim 7, it is characterised in that the system also includes：
Second comparison module, for after attribute information corresponding to TCP connections to be safeguarded described in acquisition module acquisition, inciting somebody to action
Port numbers in attribute information corresponding to the TCP connections to be safeguarded are compared with setting port numbers threshold value；Wherein, it is described to set
Fixed end slogan threshold value is used to indicate whether port numbers are well-known port number.
9. system according to claim 8, it is characterised in that the system also includes：
Speed acquisition module, for the end during the TCP connections to be safeguarded are corresponded into attribute information in second comparison module
After slogan is compared with setting port numbers threshold value, the port numbers in attribute information corresponding to the TCP connections to be safeguarded
During more than or equal to the setting port numbers threshold value, the multiple data transfer carried out by the TCP connections to be safeguarded is obtained successively
During, the average transmission rate of each data transmission procedure；
3rd comparison module, for by multiple average transmission rates standard transmission corresponding with the TCP connections to be safeguarded respectively
Speed is compared；
Statistical module, for recording number of the average transmission rate less than the data transmission procedure of the standard transfer rate；
Removing module, for record the number be more than or equal to setting number thresholding when, by the TCP connections pair to be safeguarded
The attribute information answered has deleted TCP lists described in adding.
10. system according to claim 8 or claim 9, it is characterised in that first comparison module, including：
Well-known port comparison module, it is less than for the port numbers in attribute information corresponding to the TCP connections to be safeguarded described
When setting port numbers threshold value, by the attribute in attribute information corresponding to the TCP connections to be safeguarded and the well-known port list
Information is compared；
Port comparison module is deleted, is more than or equal to for the port numbers in attribute information corresponding to the TCP connections to be safeguarded
During the setting port numbers threshold value, by attribute information corresponding to the TCP connections to be safeguarded and the attribute in TCP lists has been deleted
Information is compared.
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| CN102457871A (en) * | 2010-10-26 | 2012-05-16 | 电信科学技术研究院 | Method and system for saving network resource |
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