CN102137104A - Transmission control protocol (TCP) long-connection access control method and device - Google Patents

Abstract

The invention discloses a TCP long connection access control method, comprising: a central control node receives a synchronous notification message including information about TCP long connection access or disconnection sent by a long connection front end, and counts the number of current TCP long connections ;Receive the TCP persistent connection application request message sent by the persistent connection front-end processor; determine whether the current TCP persistent connection number is less than the set value, and if so, return an application response message allowing access to the persistent connection front-end processor, otherwise return not allowed The access application response message is sent to the long-connection front-end processor. The invention also provides the corresponding central control node, long connection front-end and telecommunication equipment. In the technical solution of the present invention, the central control node judges whether the number of current TCP long connections is less than the set value, thereby deciding whether to allow re-access to the technical solution of TCP long connections, which can accurately count and control the number of TCP long connections that are accessed , to enable reliable operation of telecommunications equipment.

Description

A transmission control protocol TCP persistent connection access control method and device

technical field

The present invention relates to the technical field of communication, in particular to a transmission control protocol TCP persistent connection access control method and device.

Background technique

Transmission Control Protocol (TCP) long connection is a connection method that establishes a communication connection first, does not disconnect after the connection is established, and then repeatedly sends and receives messages, and is often used in point-to-point communication.

With the rapid increase of telecommunication data traffic, telecommunication devices carrying data services, such as gateway devices, usually access a large number of long TCP connections established by external customers. On the one hand, telecommunications equipment needs to ensure the establishment of TCP long-term connections of external network elements as much as possible to meet the development of data services; on the other hand, in order to ensure the reliability of the operation of the telecommunications equipment system, it is necessary to control the total number of TCP long-term connections.

Please refer to Figure 1, an existing telecommunication equipment includes a persistent connection front-end processor and a background processing system, wherein the persistent connection front-end processor is used to access the TCP persistent connection established by an external network element, and The number of long connections is controlled, and the background processing system processes the data services of the incoming TCP long connections. Since this kind of telecommunication equipment includes only one long-connection front-end device, the scalability is poor, and the number of TCP long-connections that can be accessed is limited, and only 65535 concurrent TCP long-connections can be connected at most.

Please refer to Figure 2. On the basis of the former telecom equipment, another telecom equipment increases the long-connection front-end from one to multiple, and adds a load balancer. The load balancer divides the external network according to the distribution strategy The TCP persistent connection request message sent by the unit is distributed to each persistent connection front end. This type of telecommunication equipment, as a cluster system including multiple persistent connection front-ends, improves the ability to access TCP persistent connections; however, since each persistent connection front-end is independent of each other, it cannot cooperate to control the incoming TCP persistent connections.

Contents of the invention

Embodiments of the present invention provide a TCP persistent connection access control method and device.

A transmission control protocol TCP persistent connection access control method, comprising:

The central control node receives the synchronization notification message sent by the long connection front end, and the synchronization notification message includes the information of TCP long connection access or disconnection;

Counting the number of current TCP long connections according to the synchronization notification message;

receiving the TCP persistent connection application request message sent by the persistent connection front end;

Determine whether the number of current TCP persistent connections is less than a set value, if so, return an application response message allowing access to the persistent connection front-end processor, otherwise return an application response message that does not allow access to the persistent connection front-end processor , to control whether the persistent connection front end accesses the TCP persistent connection.

A transmission control protocol TCP persistent connection access control method, comprising:

After receiving the login message sent by the external network element, the persistent connection front-end processor sends a TCP persistent connection application request message to the central control node;

receiving an application response message returned by the central control node;

If the application response message is an application response message that does not allow access, rejecting the login message of the external network element;

If the application response message is an application response message allowing access, then access the TCP long connection established by the external network element;

When the TCP long connection is connected or disconnected, a synchronization notification message is sent to the central control node, and the synchronization notification message includes the information of the TCP long connection connection or disconnection, which is used for statistics by the central control node The current number of TCP persistent connections.

A central control node comprising:

The receiving unit is used to receive the synchronization notification message and the TCP persistent connection application request message sent by the persistent connection front end, and the synchronization notification message includes the information of TCP persistent connection access or disconnection;

A statistical unit, configured to count the number of current TCP long connections according to the synchronization notification message;

A judging unit, configured to judge whether the number of current TCP long connections is less than a set value;

A sending unit, configured to return an application response message allowing access to the persistent connection front end when the judging unit determines that the number of current TCP persistent connections is less than a set value, otherwise returning an application response message not allowing access For the persistent connection front-end, to control whether the persistent connection front-end accesses the TCP persistent connection.

A long connection front-end processor, comprising:

The first receiving and sending unit is configured to send a TCP persistent connection application request message to the central control node after receiving the login message sent by the external network element, and receive an application response message returned by the central control node;

A persistent connection processing unit, configured to reject the login message of the external network element if the application response message is an application response message that does not allow access; if the application response message is an application response message that allows access, then Accessing the TCP long connection established by the external network element;

The second receiving and sending unit is used to send a synchronization notification message to the central control node when the TCP persistent connection is connected or disconnected, and the synchronization notification message includes information about the connection or disconnection of the TCP persistent connection. It is used for the central control node to count the number of current TCP long connections.

A telecommunications device, comprising: a load balancer, a plurality of long-term connection front-ends connected to the load balancer, a central control node connected to the plurality of long-term connection front-ends, and a plurality of long-term connection front-ends connected to the multiple long-term connection Connect to the background processing system connected to the front-end processor;

The load balancer is used to distribute the TCP persistent connection of the external network element to each persistent connection front-end according to the distribution strategy;

The persistent connection front-end device is configured to send a TCP persistent connection application request message to the central control node after receiving the login message sent by the external network element; receive the application response message returned by the central control node; if the application response If the message is an application response message that does not allow access, then reject the login message of the external network element; if the application response message is an application response message that allows access, then access the TCP long connection established by the external network element ; When the TCP long connection is connected or disconnected, a synchronization notification message is sent to the central control node, and the synchronization notification message includes the information of the TCP long connection connection or disconnection, which is used for the central control node Count the number of current TCP long connections;

The central control node is configured to receive a synchronous notification message sent by the persistent connection front end, the synchronous notification message includes information about the connection or disconnection of the TCP persistent connection; count the current TCP persistent connection according to the synchronous notification message number; receiving the TCP long connection application request message sent by the long connection front end; judging whether the current TCP long connection number is less than a set value, if so, returning an application response message allowing access to the long connection front end machine, otherwise return an application response message that does not allow access to the persistent connection front-end processor, so as to control whether the persistent connection front-end processor accesses the TCP persistent connection;

The background processing system is used to process the data service of the accessed TCP persistent connection.

The embodiment of the present invention adopts the technical solution that the increased central control node counts and judges whether the current number of TCP long connections is less than the set value, so as to determine whether to allow the long connection front-end processor to reconnect to the TCP long connection, and can accurately control access The number of TCP long connections to improve the reliability of telecommunication equipment operation.

Description of drawings

FIG. 1 is a schematic structural diagram of a telecommunications device in the prior art;

FIG. 2 is a schematic structural diagram of another telecommunication device in the prior art;

Fig. 3 is the flowchart of the TCP persistent connection access control method provided by one embodiment of the present invention;

Fig. 4 is the flowchart of the TCP persistent connection access control method provided by another embodiment of the present invention;

Fig. 5 is a flow chart of a TCP persistent connection access control method provided by another embodiment of the present invention;

Fig. 6 is a flow chart of the method of the present invention used in an application scenario;

Fig. 7 is a flow chart of the method of the present invention used in another application scenario;

Fig. 8 is a flow chart of the method of the present invention used in another application scenario;

FIG. 9 is a schematic structural diagram of a central control node provided by an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a long-connection front-end processor provided by an embodiment of the present invention;

Fig. 11 is a schematic structural diagram of a telecommunication device provided by an embodiment of the present invention.

Detailed ways

The embodiment of the present invention provides a TCP persistent connection access control method, which uses the added central control node to count and judge whether the current TCP persistent connection number is less than the set value, so as to determine whether to allow the persistent connection front-end processor to re-connect to the TCP The technical solution of persistent connection can accurately control the number of TCP persistent connections to improve the reliability of telecommunication equipment operation. The embodiment of the present invention also provides a corresponding central control node, a persistent connection front-end processor and telecommunication equipment. Each will be described in detail below.

As shown in FIG. 2 , the telecommunication equipment includes: a load balancer, multiple persistent connection front-ends connected to the load balancer, and a background processing system connected to the multiple persistent connection front-ends. To implement the method provided by the embodiment of the present invention, it is also necessary to add a central control node connected to multiple long-connection front-ends in the existing telecommunication equipment, or use an existing unit in the telecommunication equipment as the central control node.

Among them, the load balancer is used to distribute the TCP persistent connection request message sent by the external network element for establishing the TCP persistent connection connected to the telecommunication equipment to each persistent connection front-end processor according to the distribution strategy; the persistent connection front-end processor is used to receive the load The balancer distributes the TCP long connection request message sent by the external network element, and receives the login message sent by the external network element, and rejects the login message sent by the external network element or the TCP long connection established by the external network element according to the judgment result of the central control node. connection, return a response message indicating the success or failure of the login to the long connection front-end; the background processing system is used to process the data service of the established TCP long connection; the central control node is used to precisely control the incoming TCP long connection the number of .

Please refer to Fig. 3, the TCP persistent connection access control method provided by one embodiment of the present invention includes the following steps:

101. The central control node receives a synchronization notification message sent by a persistent connection front end, where the synchronization notification message includes information about connection or disconnection of a TCP persistent connection.

Each time the persistent connection front-end processor connects or disconnects a TCP persistent connection with an external network element, it will send a synchronous notification message to the central control node, so as to notify the central control node of the TCP persistent connection access or disconnection information . The synchronization notification message at least includes a persistent connection access synchronization notification message and a persistent connection disconnection synchronization notification message.

102. Count the number of current TCP persistent connections according to the synchronization notification message.

The central control node can count the total number of current TCP persistent connections according to the received synchronization notification message, and can also count the number of TCP persistent connections by category, for example, it can specifically count the TCP persistent connections of a certain or a certain type of external network element number.

103. Receive the TCP persistent connection application request message sent by the persistent connection front-end processor.

After receiving the TCP persistent connection request message sent by the external network element, the persistent connection front-end processor waits for the external network element to send a login message, and after receiving the login message sent by the external network element, sends a TCP persistent connection application request message to the The central control node, so that the central control node judges whether to allow the external network element to log in to access the TCP persistent connection of the external network element according to the policy.

104. Determine whether the number of current TCP persistent connections is less than the set value, if so, return an application response message allowing access to the persistent connection front-end processor, otherwise return an application response message that does not allow access to the persistent connection front-end processor, and Controlling whether the persistent connection front end accesses the TCP persistent connection.

The central control node can determine whether to allow the external network element to log in to the persistent connection front-end processor to access the TCP persistent connection of the external network element by comparing the current number of TCP persistent connections with the set value. Wherein, the set value is a preset total number of TCP long connections allowed to be accessed. When the number of current TCP persistent connections is less than the set value, return an application response message for allowing access to the persistent connection front-end processor, otherwise return an application response message for not allowing access to the persistent connection front-end processor.

In the method provided by the embodiment of the present invention, the central control node is used to count the number of current TCP long connections and judge whether the current number of TCP long connections is less than the set value, so as to determine whether to allow the long connection front end to reconnect to the TCP long connection, thereby It can accurately control the number of TCP long connections to improve the reliability of telecommunication equipment operation.

Please refer to FIG. 4 , in another embodiment, the TCP persistent connection access control method provided by the embodiment of the present invention may include the following steps:

101'. The control node receives a synchronization notification message sent by the persistent connection front-end, where the synchronization notification message includes information about the connection or disconnection of the TCP persistent connection of the specified external network element.

102'. Count the number of TCP persistent connections of the specified external network element according to the synchronization notification message;

103'. Receive a TCP persistent connection application request message corresponding to a specified external network element sent by the persistent connection front end;

104'. Determine whether the current number of TCP long connections of the specified external network element is less than the set value for the specified external network element, and if so, return an application response message for allowing access to the long connection front-end processor, otherwise return not allowing access The incoming application response message is sent to the long-connection front-end processor.

By adopting the method of this embodiment, it is possible to precisely control the TCP connection from a certain or a certain type of specified external network element, thereby improving the control capability of the telecommunication equipment.

Please refer to Fig. 5, the TCP persistent connection access control method provided by another embodiment of the present invention includes the following steps:

201. After receiving the login message sent by the external network element, the persistent connection front-end processor sends a TCP persistent connection application request message to the central control node.

The external network element initiates the process of establishing a TCP long-term connection to the telecommunications equipment. The load balancer of the telecommunications equipment will distribute the TCP long-connection request message sent by the external network element to each long-connection front-end processor according to the distribution policy. After receiving the TCP persistent connection request message, wait for the external network element to send a login message.

After receiving the login message sent by the external network element, the persistent connection front-end processor sends a TCP persistent connection application request message to the central control node, so that the central control node can decide whether to allow another connection according to the number of currently connected TCP persistent connections. The TCP persistent connection to access the external network element.

202. Receive an application response message returned by the central control node.

The central control node compares whether the number of current TCP long connections is less than the set value, and if so, returns an application response message that allows access, otherwise returns an application response message that does not allow access.

203. If the application response message is an application response message that does not allow access, reject the login message of the external network element.

That is, the TCP long connection to access the external network element is not allowed, and a login failure response message is returned to the external network element.

204. If the application response message is an application response message allowing access, access the TCP persistent connection established by the external network element.

If it is an application response message for allowing access, the persistent connection front-end processor releases the login message of the external network element, thereby accessing the TCP persistent connection established by the external network element, and returns a login success response message to the external network element.

205. When the TCP long connection is connected or disconnected, send a synchronous notification message to the central control node. The synchronous notification message includes the information of the TCP long connection connection or disconnection, and is used for the central control node to count the number of current TCP long connections .

After the persistent connection front-end processor accesses the TCP persistent connection and returns a login success response message to the external network element, it needs to send a synchronous notification message including the TCP persistent connection access information to the central control node; similarly, when the TCP persistent connection is disconnected When, for example, when the task ends or is disconnected due to various abnormalities, it is necessary to send a synchronous notification message including TCP long connection disconnection information to the central control node; so that the central control node can count the number of current TCP long connections.

In the method provided by the embodiment of the present invention, the persistent connection front-end processor can decide whether to allow re-access to the TCP persistent connection according to the application response message returned by the central control node, so as to accurately control the number of TCP persistent connections that are accessed, so as to improve Reliability of telecommunications equipment operation.

In another embodiment, if the persistent connection front-end processor fails to send the TCP persistent connection application request message after receiving the login message sent by the external network element, it accesses the TCP persistent connection established by the external network element.

In yet another embodiment, after sending the TCP persistent connection application request message to the central control node, if the persistent connection front-end processor does not receive the application response message returned by the central control node within a preset time, it will access the network established by the external network element. TCP long connection.

With the above two embodiments, even if the persistent connection front-end fails to send out the TCP persistent connection application request due to abnormality, or the central control node cannot return the application response message due to downtime or other reasons, the connection of the external network element will not be affected. TCP persistent connection access ensures the smooth flow of data services of the external network element.

In the following, the method in the embodiment of the present invention will be further described in conjunction with specific application scenarios.

Please refer to Figure 6. In an application scenario, the telecommunications equipment includes: a load balancer, multiple long-connection front-ends connected to the load balancer, and a background processing system connected to multiple long-connection front-ends, and Consists of a central control node connected to multiple long-connection front-ends. The telecommunication equipment is a cluster system including multiple long-connection front-end processors. The method of the embodiment of the present invention comprises the following steps:

301. The external network element initiates a TCP persistent connection establishment process, and sends a TCP persistent connection request message to the load balancer, so as to establish a TCP persistent connection connected to the telecommunication device;

302. The load balancer of the telecommunications equipment distributes the received TCP persistent connection request message to each persistent connection front-end according to the distribution strategy;

303. The persistent connection front-end processor receives the distributed TCP persistent connection request message, and waits for an external network element to send a login message;

304. The external network element sends a login message to the long-connection front-end processor;

305. After receiving the login message sent by the external network element, the long connection front-end device sends a long connection application request message (LongConnectReq) to the central control node;

306. After the central control node receives the persistent connection application request message sent by the persistent connection front-end processor, it judges according to whether the current number of TCP persistent connections is less than the total number of persistent connections allowed by the telecommunication equipment, and decides whether to allow access to the TCP Long connection;

307. If the current number of TCP long connections < the total number of allowed long connections, return a long connection application response message (LongConnectResp) that allows access; if the current number of TCP long connections >= the total number of long connections allowed by the system, Return a persistent connection application response message that does not allow access;

308. The persistent connection front-end processor determines whether to access the TCP persistent connection of the external network element according to the received persistent connection application response message; when receiving a persistent connection application response message that does not allow access, rejects the connection of the external network element Login message; when receiving a persistent connection application response message that allows access, release the login message of the external network element to access the TCP persistent connection;

309. After releasing the login message, the persistent connection front-end processor returns a login success response message to the external network element; or, after rejecting the login message, returns a login failure response message to the external network element;

310. After releasing the login message and returning a login success response message to the external network element, the long connection front-end device needs to send a synchronous notification message (LongConnectNotify) including the long connection access information to the central control node;

311. After receiving the synchronization notification message, the central control node establishes statistics on the number of TCP persistent connections, which is used for subsequent permission judgment on whether to allow access to TCP persistent connections.

In this application scenario, the central control node returns an application response message of whether to allow access to the persistent connection front-end processor according to whether the current number of TCP persistent connections is less than the total number of persistent connections allowed by the system, and the persistent connection front-end processor can return The application response message is used to determine whether to allow the re-access of TCP persistent connections, so as to accurately control the number of incoming TCP persistent connections, so as to improve the reliability of telecommunication equipment operation.

Please refer to Figure 7. In another application scenario, the network element device can be a service provider (Service Provider, SP) device, and the telecommunication device can be a SAG (Service Access Gateway) gateway. The SAG gateway includes a long-term connection front-end The service access (Service Access, SA) module, the central management server (Central Management Server, CM Server) as the central control node, and the background processing (Service Orchestration, SO) system. Among them, the SP can adopt the 3.3 or 3.4 version message conversion (short message peer to peer 3.3/3.4, SMPP3.3/3.4) protocol, the message publishing computer interface (Computer Interface to Message Distribution 2, CIMD2) protocol, or the external machine interface ( External Machine Interface, EMI) protocol and other long-term connection protocols are connected to the SAG gateway. The method of the embodiment of the present invention comprises the following steps:

401. The SP sends a TCP persistent connection request message for establishing a TCP persistent connection to the SAG;

402. The load balancer of the SAG distributes the received TCP long connection request message to each SA according to the distribution strategy;

403. The SA receives the distributed TCP long connection request message, and waits for the SP to send a login message;

404. The SP sends the smpp3.3/3.4bind_transmitter login message to the SA;

405. After the SA receives the smpp3.3/3.4bind_transmitter login message sent by the SP, it sends a long connection application request message LongConnectReq to the CMServer;

406. After receiving the long connection application request message LongConnectReq, the CMServer judges according to whether the current number of long connections is less than the total number of long connections allowed by the SAG, and decides whether to allow access to the TCP long connection;

407. If the current number of TCP long connections < the total number of permitted long connections, return the long connection application response message LongConnectResp that allows access; if the current number of TCP long connections >= the total number of long connections permitted by the system, return No The long connection application response message LongConnectResp that allows access;

408. The SA rejects the login message of the SP according to the received connection application response message LongConnectResp, or releases the login message of the SP to access the TCP long connection;

409. If it is allowed, after the login message is released, the SA returns a login success response message smpp3.3/3.4bind_transmitter_resp to the SP; if it fails, after rejecting the login message, the SA returns a login failure response message smpp3.3/3.4bind_transmitter_resp to the SP SP;

410. After releasing the login message and returning a login success response message to the SP, the SA needs to send a synchronous notification message LongConnectNotify including the long connection access information to the CMServer;

411. The CMServer receives the notification message, and establishes statistics on the number of TCP persistent connections, which is used for subsequent permission judgment on whether to allow access to the TCP persistent connections.

Please refer to Figure 8. In another application scenario, the network element device can be a service provider (Service Provider, SP) device, and the telecommunication device can be a SAG (Service Access Gateway) gateway. The SAG gateway includes a long-term connection front-end The service provider agent (Service Provider Agent, SPAgent), the control management center (Control Management Center, CMCenter) as the central control node, and the short message server (Short Message Server, SMSServer) as the background processing system. Among them, the SP can use the 3.0 version of China Mobile Peer to Peer Protocol (China Mobile Peer to Peer 3.0, CMPP3.0) and other long connection protocols to access the SAG gateway. The method of the embodiment of the present invention comprises the following steps:

501. The SP sends a TCP persistent connection request message for establishing a TCP persistent connection to the SAG;

502. The load balancer of the SAG distributes the received TCP long connection request message to each SPAgent according to the distribution policy;

503. The SPAgent receives the distributed TCP long connection request message, and waits for the SP to send a login message;

504. The SP sends a CMPP3.0CMPP_CONNECT login message to the SPAgent;

505. After receiving the CMPP3.0CMPP_CONNECT login message sent by the SP, the SPAgent sends a long connection application request message LongConnectReq to the CMCenter;

506. After CMCenter receives the long connection application request message LongConnectReq, it judges according to whether the current number of long connections is less than the total number of long connections allowed by SAG, and decides whether to allow access to the TCP long connection;

507. If the current number of TCP long connections < the total number of permitted long connections, return the long connection application response message LongConnectResp that allows access; if the current number of TCP long connections >= the total number of long connections permitted by the system, return No The long connection application response message LongConnectResp that allows access;

508. The SPAgent rejects the login message of the SP according to the received connection request response message LongConnectResp, or releases the login message of the SP to access the TCP long connection;

509. If it is allowed, after the login message is released, the SPAgent returns a login success response message CMPP3.0CMPP_CONNECT_RESP to the SP; if it fails, after rejecting the login message, the SPAgent returns a login failure response message CMPP3.0CMPP_CONNECT_RESP to the SP;

510. After releasing the login message and returning a login success response message to the SP, the SPAgent needs to send a synchronous notification message LongConnectNotify including the long connection access information to the CMCenter;

511. The CMCenter receives the notification message, and establishes statistics on the number of the persistent connection, which is used for subsequent permission judgment on whether to allow access to the TCP persistent connection.

Please refer to FIG. 9, the embodiment of the present invention also provides a central control node, including:

The receiving unit 601 is configured to receive a synchronization notification message and a TCP persistent connection application request message sent by the persistent connection front end, the synchronization notification message including information about TCP persistent connection access or disconnection;

A statistical unit 602, configured to count the number of current TCP long connections according to the synchronization notification message;

Judging unit 603, used to judge whether the number of current TCP long connections is less than a set value;

The sending unit 604 is used for the processing unit to return an application response message allowing access to the persistent connection front end when the processing unit judges that the number of current TCP persistent connections is less than the set value, otherwise returning an application response message not allowing access to the persistent connection front end Set the machine to control whether the long connection front-end machine is connected to the TCP long connection.

In another embodiment:

The receiving unit 601 is also configured to receive a synchronization notification message sent by the persistent connection front-end device including the TCP persistent connection access or disconnection information of the specified external network element, and a TCP persistent connection application request message corresponding to the specified external network element;

The statistical unit 602 is also used to count the number of TCP persistent connections of the designated external network element according to the synchronous notification message, the synchronous notification message including information about the connection or disconnection of the TCP persistent connection of the designated external network element;

The judging unit 603 is also used to judge whether the current number of TCP long connections of the specified external network element is less than the set value for the specified external network element;

The sending unit 604 is also used to return an application response message for allowing access to the persistent connection front-end processor when the judging unit judges that the number of current TCP long connections of the specified external network element is less than the set value for the specified external network element, Otherwise, return an application response message that access is not allowed to the long-connection front-end processor.

The central control node provided by the embodiment of the present invention can count the number of current TCP long connections by interacting with the long-connection front-end processor, and judge whether the current number of TCP long-connections is less than the set value, so as to determine whether to allow long-term connection front-end The machine is then connected to the TCP long connection, and the use of the central control node in the telecommunication equipment can accurately control the number of the TCP long connection connected, so as to improve the reliability of the operation of the telecommunication equipment.

Please refer to FIG. 10, the embodiment of the present invention also provides a long connection front-end processor, including:

The first receiving and sending unit 701 is configured to send a TCP persistent connection application request message to the central control node after receiving the login message sent by the external network element, and receive an application response message returned by the central control node;

The persistent connection processing unit 702 is used to reject the login message of the external network element if the application response message is an application response message that does not allow access; if the application response message is an application response message that allows access, then access the external network element Established TCP long connection;

The second receiving and sending unit 703 is used to send a synchronization notification message to the central control node when the TCP long connection is connected or disconnected. The synchronization notification message includes the information of the TCP long connection connection or disconnection, and is used for the central control node. Count the number of current TCP long connections.

In another embodiment, the persistent connection processing unit 702 is also used for if the first receiving and sending unit 701 sends the TCP persistent connection application request message to the central control node, but does not receive the application response returned by the central control node within a preset time message, it accesses the TCP persistent connection established by the external network element.

In yet another embodiment, the persistent connection processing unit 702 is further configured to, if the first receiving and sending unit 701 receives the login message sent by the external network element, fails to send the TCP persistent connection application request message, then accesses the external network element to establish TCP persistent connection.

The persistent connection front-end processor provided by the embodiment of the present invention can interact with the central control node provided by the above-mentioned embodiment, and decide whether to reconnect to the TCP persistent connection under the control of the central control node. Before adopting the persistent connection in the telecommunication equipment The machine set cooperates with the central control node to accurately control the number of TCP long connections to improve the reliability of telecommunication equipment operation.

Please refer to FIG. 11 , an embodiment of the present invention provides a communication device, including: a load balancer 800, a plurality of persistent connection front-end processors 700 connected to the load balancer 800, and a central A control node 600, and a background processing system 900 connected to a plurality of long-connected front-end processors 700;

The load balancer 800 is used to distribute the TCP persistent connection of the external network element to each persistent connection front-end processor 700 according to the distribution policy;

The persistent connection front-end processor 700 is configured to send a TCP persistent connection application request message to the central control node 600 after receiving the login message sent by the external network element; receive the application response message returned by the central control node 600; if the application response message is not If the application response message that allows access is received, the login message of the external network element is rejected; if the application response message is an application response message that allows access, it is connected to the TCP persistent connection established by the external network element; when the TCP persistent connection is connected or disconnected When opening, send a synchronous notification message to the central control node 600, the synchronous notification message includes the information of TCP long connection access or disconnection, and is used for the central control node 600 to count the current TCP long connection number;

The central control node 600 is used to receive the synchronous notification message sent by the long-connection front-end processor 700. The synchronous notification message includes the information of TCP long-connection access or disconnection; counts the number of current TCP long-connections according to the synchronous notification message; receives the long-connection The TCP long-connection application request message sent by the front-end processor 700; judge whether the current TCP long-connection number is less than the set value, and if so, return an application response message allowing access to the long-connection front-end processor 700, otherwise return not allowing access The application response message is given to the persistent connection front-end processor 700 to control whether the persistent connection front-end processor 700 accesses the TCP persistent connection;

The background processing system 900 is configured to process the data service of the accessed TCP persistent connection.

The communication device provided by the embodiment of the present invention can be counted by the central control node and judged whether the current number of TCP long connections is less than the set value, so as to decide whether to allow the long connection front-end processor to reconnect to the TCP long connection, so as to accurately control the connection The number of incoming TCP long connections improves the reliability of telecom equipment operation.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a computer-readable storage medium. When the program is executed, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

The central control node, long-connection front-end processor, communication equipment, etc. described in the above-mentioned embodiments can be physical entities with processors, input and output interfaces, memory and other components. Of course, the software mentioned in each embodiment can be implemented. Function.

The transmission control protocol TCP long connection access control method provided by the embodiment of the present invention and the corresponding central control node, long connection front-end processor and telecommunication equipment have been introduced in detail above. In this paper, specific examples are used to explain the principles and methods of the present invention. The implementation modes have been described, and the descriptions of the above examples are only used to help understand the method and core idea of the present invention, and should not be construed as limiting the present invention.

Claims (11)

1. the long connection control method that connects of transmission control protocol TCP is characterized in that, comprising:

Central control node receives the long synchronization notice message that front end processor sends that connects, and described synchronization notice message comprises the long information that inserts or disconnect that connects of TCP;

Add up the long number that connects of current TCP according to described synchronization notice message;

Receive the described long long application request message that connects of TCP that front end processor sends that connects;

Judge that whether the long number that connects of current TCP is less than setting value, give the described long front end processor that connects if then return the application response message that allows to insert, connect front end processor for described length otherwise return the application response message that does not allow to insert, whether insert the long connection of described TCP to control the described long front end processor that connects.

2. method according to claim 1 is characterized in that, described synchronization notice message comprises the long information that inserts or disconnect that connects of the TCP of designated external network element;

The long synchronization notice message that connects the front end processor transmission of described reception also comprises afterwards:

The long number that connects of TCP according to described synchronization notice message statistics designated external network element;

Receive the described long long connection application request message of the TCP corresponding to described designated external network element that front end processor sends that connects;

Whether the long number that connects of current TCP of judging the designated external network element is less than the set point at this designated external network element, give described long connection front end processor if then return the application response message that allows to insert, give the described long front end processor that connects otherwise return the application response message that does not allow to insert.

3. the long connection control method that connects of transmission control protocol TCP is characterized in that, comprising:

After long connection front end processor is received the log messages of ext nal network element transmission, send the long connection application request message of TCP to central control node;

Receive the application response message that described central control node returns;

If described application response message is then refused the log messages of described ext nal network element for not allowing the application response message that inserts;

If the application response message of described application response message for allowing to insert then inserts long connection of TCP that described ext nal network element is set up;

When the long connection of described TCP inserts or disconnects, send synchronization notice message to described central control node, described synchronization notice message comprises the information that the long connection of TCP inserts or disconnects, and is used for adding up the long connection of current TCP number for described central control node.

4. method according to claim 3 is characterized in that, the long connection application request message of described transmission TCP also comprises to after the central control node:

If do not receive the application response message that described central control node returns in the Preset Time, then insert long connection of TCP that described ext nal network element is set up.

5. method according to claim 3 is characterized in that,

If described long connect the log messages that front end processor receives that ext nal network element sends after, send that TCP is long to connect the failure of application request message, then insert long connection of TCP that described ext nal network element is set up.

6. a central control node is characterized in that, comprising:

Receiving element is used for receiving long synchronization notice message and the long connection application request message of TCP that front end processor sends that connect, and described synchronization notice message comprises the long information that inserts or disconnect that connects of TCP;

Statistic unit is used for adding up the long number that connects of current TCP according to described synchronization notice message;

Judging unit is used to judge that whether the long number that connects of current TCP is less than set point;

Transmitting element, be used for when the current TCP length of described judgment unit judges connects number less than set point, return the application response message that allows to insert and give the described long front end processor that connects, connect front end processor for described length otherwise return the application response message that does not allow to insert, whether insert the long connection of described TCP to control the described long front end processor that connects.

7. central control node according to claim 6 is characterized in that:

Described receiving element also is used for receiving and inserts or the synchronization notice message of the information of disconnection and corresponding to the long connection application request message of the TCP of described designated external network element long connection of the TCP that comprises the designated external network element that front end processor sends described long the connection;

Described statistic unit also is used for the long number that connects of TCP according to described synchronization notice message statistics designated external network element, and described synchronization notice message comprises the long information that inserts or disconnect that connects of the TCP of designated external network element;

Described judging unit is used to also judge that whether the long number that connects of current TCP of designated external network element is less than the set point at this designated external network element;

Described transmitting element, also be used in the long number that connects of the current TCP of described judgment unit judges designated external network element less than the time at the set point of this designated external network element, return the application response message that allows to insert and give described long connection front end processor, give the described long front end processor that connects otherwise return the application response message that does not allow to insert.

8. one kind long connection front end processor is characterized in that, comprising:

First receives transmitting element, after being used for receiving the log messages of ext nal network element transmission, sends the long connection application request message of TCP to central control node, and receives the application response message that described central control node returns;

The long processing unit that connects if be used for the application response message of described application response message for not allowing to insert, is then refused the log messages of described ext nal network element; If the application response message of described application response message for allowing to insert then inserts long connection of TCP that described ext nal network element is set up;

Second receives transmitting element, be used for when the long connection of described TCP inserts or disconnects, send synchronization notice message to described central control node, described synchronization notice message comprises the long information that inserts or disconnect that connects of TCP, is used for adding up the long number that connects of current TCP for described central control node.

9. the long front end processor that connects according to claim 8 is characterized in that:

The described long processing unit that connects, receive the long connection application request message of transmitting element transmission TCP to after the central control node if also be used for described first, do not receive the application response message that described central control node returns in the Preset Time, then insert long connection of TCP that described ext nal network element is set up.

10. the long front end processor that connects according to claim 8 is characterized in that:

Described long connection processing unit, if after also receiving the log messages of ext nal network element transmission for the described first reception transmitting element, send TCP length connection application request message and fail, the TCP length that then inserts described ext nal network element foundation connects.

11. communication equipment, it is characterized in that, comprising: load equalizer, a plurality of long front end processor that connects that is connected with described load equalizer, with described a plurality of long central control nodes that front end processor connects that are connected, and the background processing system that are connected the front end processor connection with described a plurality of length;

Described load equalizer is used for according to distribution policy long connection of the TCP of ext nal network element being distributed to each long front end processor that connects;

The described long front end processor that connects after being used for receiving the log messages of ext nal network element transmission, sends the long connection application request message of TCP to central control node; Receive the application response message that described central control node returns; If described application response message is then refused the log messages of described ext nal network element for not allowing the application response message that inserts; If the application response message of described application response message for allowing to insert then inserts long connection of TCP that described ext nal network element is set up; When the long connection of described TCP inserts or disconnects, send synchronization notice message to described central control node, described synchronization notice message comprises the information that the long connection of TCP inserts or disconnects, and is used for adding up current TCP length for described central control node and connects number;

Described central control node is used for receiving the described long synchronization notice message that front end processor sends that connects, and described synchronization notice message comprises the long information that inserts or disconnect that connects of TCP; Add up the long number that connects of current TCP according to described synchronization notice message; Receive the described long long connection application request message of TCP that front end processor sends that connects; Judge that whether the long number that connects of current TCP is less than setting value, give the described long front end processor that connects if then return the application response message that allows to insert, connect front end processor for described length otherwise return the application response message that does not allow to insert, whether insert the long connection of described TCP to control the described long front end processor that connects;

Described background processing system is used for the data service that the TCP length that has inserted connects is processed.

Images