CN103618738B - Intelligent load distribution system and method for achieving TCP long connection and communication - Google Patents
Intelligent load distribution system and method for achieving TCP long connection and communication Download PDFInfo
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- CN103618738B CN103618738B CN201310661665.2A CN201310661665A CN103618738B CN 103618738 B CN103618738 B CN 103618738B CN 201310661665 A CN201310661665 A CN 201310661665A CN 103618738 B CN103618738 B CN 103618738B
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Abstract
The invention provides an intelligent load distribution system and method for achieving TCP long connection and communication. The system comprises a load flow distribution server, a TCP communication server basic information management module, a TCP long connection and communication module and a data storage server, wherein the load flow distribution server is used for calculating the IP address of a TCP long connection and communication server which meets the load requirement at present and distributing TCP server ports to clients for TCP connection; the TCP communication server basic information management module is used for setting basic information for a communication server, the TCP long connection and communication server and the number of allowable connections and the maximum offset information of the ports; the TCP long connection and communication module is used for dynamically calculating current loads and the number of allowable connections of the TCP long connection and communication server according to the set information of the number of connections of the TCP long connection and communication server; the data storage server is used for storing client information, service logic data, server basic information and user information. The intelligent load distribution system and method can achieve TCP long connection and communication through horizontal extension, TCP connection request dynamic allocation, server resource self-definition setting and real-time monitoring of the server loads.
Description
Technical field
The present invention relates to network communication technology field, and in particular to a kind of load for realizing the long connection communications of TCP intelligently divides
Match system and method.
Background technology
In the long connection modes of TCP, if connection client directly enters TCP communication server ip address, TCP communication port
Row hard coded rather than dynamically distributes are carried out by communications platform interface, the server for causing communications platform can not be played into load
The advantage of balanced and horizontal extension, while the rising for connecting client terminal quantity may cause server directly when machine or cannot receive
The TCP connection requests that connection client is newly increased, also cannot accurately calculate each Service Instance or hardware server current active
On-line joining process line, system resources consumption and present load.
The content of the invention
The purpose of the present invention is to combine HTTP, TCP/IP procotol, there is provided realization can horizontal extension, TCP connection requests
The self-defined setting of dynamically distributes, server resource, the load intelligence for realizing the long connection communications of TCP of server load monitor in real time
Distribution system and method.
The present invention is achieved through the following technical solutions：
One aspect of the present invention provides a kind of load intelligent dispensing system for realizing the long connection communications of TCP, including：
Load bridging server, for providing based on the interface service of Http agreements, the long connection communications of interface interchange TCP
The service logic that the TCP connection numbers of server, load are calculated, calculates the long connection communication clothes of TCP for currently meeting load request
The IP address of business device, TCP serve ports distribute to client carries out TCP connections；TCP communication server basis information management mould
Block, for arranging the Back ground Information of the long connection communication servers of TCP and the permission connection of the long connection communication servers of TCP and port
Number, maximum offset information；
The long connection communication modules of TCP, for providing the long connection communication services of TCP of client connection, according to messaging protocol
Corresponding business logic processing is carried out, according to the connection number information of the long connection communication servers of TCP for arranging, in client connection
The connection number of the long connection communication server present load of dynamic calculation TCP and permission when setting up, disconnect, breaking；
Data storage server, for storing and the related client-side information of application, service logic data, server basis
Information, user profile.
Further, the load bridging server includes realizing the long connection communication services of TCP by Http service interfaces
Load equalizer, and be provided with non-obstruction, the event scheduling model with priority, the load equalizer passes through the scheduling mould
The all of loadbalancing tasks of type process are assigned, interprocess communication.
Further, realizing the load intelligent dispensing system of the long connection communications of TCP also includes：
Security authentication module, for carrying out safety certification to user profile, client-side information, service switch-in information.
Intelligent monitored control module, for thread suspension occur or accessing to prolong when the service container for monitoring each carrying Http interfaces
Chi Shi, restarts in time the service container.
Intrusion detection module, the state for monitoring server and network and early warning in time.
Another aspect of the present invention provides a kind of load smart allocation method for realizing the long connection communications of TCP, including：
Load bridging server receives the TCP connection requests that client sends；
The TCP connection numbers of the long connection communication servers of Http interface interchange TCP that load bridging server is provided, load meter
The service logic of calculation, calculates IP address, the TCP serve ports of the long connection communication servers of TCP for currently meeting load request
Distributing to client carries out TCP connections；
The long connection communication servers of TCP set up TCP and are connected and update clothes in the side-play amount for not up to arranging with client
Current connection number in business device list, for the Http interface interchanges that the load bridging server is provided；
When the long connection communication servers of TCP reach the connection number upper limit when being connected with client foundation, the long Connection Services of TCP
Device feedback message is redistributed to client, the Http service interfaces provided by client request load bridging server；
When the long connection communication servers of TCP disconnect, break with the connection of client, update and currently connect in server list
Number, for the Http interface interchanges that the load bridging server is provided.
Further, load bridging server load is excessive then increases load bridging server with load sharing and registers new
Server address is carrying out new load allocation rule；
The long connection communication server loads of TCP are excessive then to increase the long connection communication servers of TCP, and increases in information is arranged
Plus the parameter of new demand servicing device, the distribution of client connection resource is carried out according to new server list by Http service interfaces；
Then increase data storage server when data storage server load excessive, and change data storage server and match somebody with somebody
Put and realize load bridging, data hash storage.
Further, realizing the load smart allocation method of the long connection communications of TCP also includes：
Safety certification step：Safety certification is carried out to user profile, client-side information, service switch-in information.
Intelligent monitoring step：When thread suspension or access delay occurs in the service container for monitoring each carrying Http interfaces
When, the service container is restarted in time.
Intrusion detection step：The state of monitoring server and network and early warning in time.
The present invention has compared with prior art advantages below and beneficial effect：
(1) by setting up before TCP is connected with communications platform and first passing through Http interfaces to communications platform in connection client
The long link addresses of request TCP and port, are calculated the minimum server address of present load amount and port by communications platform and are divided
Dispensing TCP connects client, realizes that communications platform can horizontal extension, TCP connection request dynamically distributes；
(2) based on computer network with standard network protocol such as Http, TCP, it is adaptable to which any client for possessing network connection is realized corresponding
Communication protocol；
(3) unified interface service and technical specification is provided for client, and returns to the information of client and adopt standard
XML or JSON data interchange formats, client need to only recognize the data form of agreement, reduce the development of client
Amount；
(4) support to set up connection in the environment of VPN (virtual private network), make the network and public network reality of client and server
Now isolate, improve the safety of network；
(5) access rights and information interaction security that safety certification ensure that client have been carried out to client；
(6) be provided with intelligent monitored control module, respectively carry for server Http interfaces service container stability and can
Access property；When monitoring that thread suspension or access delay occurs in certain service container, intelligent monitored control module restarts in time the service
Container, it is ensured that the stability and reliability of interface；
(7) intrusion detection module is provided with, for monitoring server and the health status of network；If server or network go out
Now abnormal, intrusion detection module sends mail or SMS and gives system operation management personnel automatically, it is ensured that server or network
Exception repair as early as possible；
(8) the Http service interfaces, TCP communication are serviced using the development language of pure Java6, with good compatibility
Property, the operating system such as compatible Linux/Windows/Unix/Solaris.
Description of the drawings
Fig. 1 is the structural representation of the load intelligent dispensing system for realizing the long connection communications of TCP of the present invention；
Fig. 2 is the configuration diagram of the load intelligent dispensing system for realizing the long connection communications of TCP of the present invention；
Fig. 3 is the schematic flow sheet of the load smart allocation method for realizing the long connection communications of TCP of the present invention；
Fig. 4 is that the load intelligent dispensing system for realizing the long connection communications of TCP of the present invention and the implementation process of method are illustrated
Figure.
Specific embodiment
Embodiments of the present invention are specifically illustrated below in conjunction with the accompanying drawings, and accompanying drawing is only for reference and explanation is used, and it is right not constitute
The restriction of scope of patent protection of the present invention.
As shown in figure 1, in the present embodiment, one aspect of the present invention provides a kind of load intelligence for realizing the long connection communications of TCP
Energy distribution system, including：
Load bridging server, for providing based on the interface service of Http agreements, the interface interchange TCP length connection is logical
The service logic that the TCP connection numbers of telecommunications services device, load are calculated, calculates the long connection communications of TCP for currently meeting load request
The IP address of server, TCP serve ports distribute to client carries out TCP connections；TCP communication server basis information management mould
Block, Basic Information Management module is provided based on Web modes for the long connection communication servers of TCP, for arranging the long connection communications of TCP
The long connection communication server of Back ground Information and TCP of server and the permission connection number of port, maximum offset information is maximum inclined
Shifting amount is that a connection number buffering range is arranged on the basis of the specified connection number of the long connection communication servers of TCP, so as to permit
Perhaps connect number and be defined as the value that specified connection number deducts maximum offset；For example, manager arranges according to server load and allows
Connection number is 2500, and maximum offset is 500, TCP long connection communication servers when being connected is set up with client and has reached permission
During the connection number upper limit 2500, simultaneously feedback message, to client, is divided the long connection server trigger events of TCP by client request load
The Http service interfaces that streaming server is provided are redistributed；
The long connection communication modules of TCP, for providing the long connection communication services of TCP of client connection, according to messaging protocol
Corresponding business logic processing is carried out, according to the connection number information of the long connection communication servers of TCP for arranging, in client connection
The connection number of the long connection communication server present load of dynamic calculation TCP and permission when setting up, disconnect, breaking；
Data storage server, based on the NoSQL numbers such as the relevant databases such as MySQL, MsSQL, Oracle or MongoDB
Data storage service is provided according to storehouse, for storing and the related client-side information of application, service logic data, server basis letter
Breath, user profile etc..
In an embodiment of the present invention, realizing the load intelligent dispensing system of the long connection communications of TCP also includes that WEB manages mould
Block, by Http agreements client-side information interaction, inquiry, management, monitoring, setting server, client ends relative are carried out.
The data storage server combine Memcached distributed memory databases by internal memory it is data cached and
Object reducing the number of times of reading database, so as to the pressure for improving database concurrency, reducing database server；In server
Hardware aspect preserves data using disk RAID5 and global hot spare method, it is ensured that the safe and reliable and server magnetic of service data
The stable operation of disk array.
In the load intelligent dispensing system for realizing the long connection communications of TCP of the present invention, can be in VPN (virtual private network)
TCP connections are set up in environment, makes client realize isolating with public network with the network of the communication server<Such as：The tunnels such as GRE or L2TP
The APN networks of agreement>, and each time communication may pass through encryption, client is more pacified with the network of the communication server
It is complete reliable, it is also possible to set up TCP connections in the mobile public networks such as 3G, Internet network and realize TCP communication.
In an embodiment of the present invention, the client is based on TCP/IP, http protocol with the communication of the communication server.Institute
The load intelligent dispensing system for realizing the long connection communications of TCP is stated based on ICP/IP protocol, with reference to Http protocol realizations TCP services
Horizontal extension and load distribution.
In an embodiment of the present invention, the load bridging server includes realizing that TCP length connects by Http service interfaces
The load equalizer of telecommunications services is connected, and is provided with non-obstruction, the event scheduling model with priority, the load equalizer leads to
Cross the scheduling model and process all of loadbalancing tasks assignment, interprocess communication, there is provided the guarantor of the high reliability of TCP communication
The guarantee of card and message communicating stability, solves the single-point Dependence Problem of TCP communication server, with reference to two-shipper mutually for principle,
The redundancy backup of TCP communication server can be realized.
In an embodiment of the present invention, realizing the load intelligent dispensing system of the long connection communications of TCP also includes：
Security authentication module, in being arranged at the Http interface servers of load bridging server, for user profile, visitor
Family client information, service switch-in information carry out safety certification.In information interactive process, information is encrypted and authentication processing,
Guarantee safety and integrity of the information in transmitting procedure.
Intelligent monitored control module, for monitoring the stability and accessibility of the service container of the Http interfaces of each carrying；When
When monitoring that thread suspension or access delay occurs in the service container of each carrying Http interfaces, the service container is restarted in time and is repaiied
Change corresponding service interface or TCP communication socket, it is ensured that the stability and reliability of interface.
Intrusion detection module, the state for monitoring server and network and early warning in time；If server or network occur
Abnormal, intrusion detection module sends mail or SMS to operation management personnel automatically, it is ensured that the exception of server or network
Repair as early as possible.For example, if network suffer illegal invasion or Brute Force etc., countering intrusions software by visitor add blacklist list with
Ensure the safety of server and network；If server, network failure caused by hardware device etc., network O＆M management personnel also can
The very first time knows the node and reason for currently breaking down, while backup server will take over corresponding service.
In view of concurrently carrying, the support level of the load intelligent dispensing system for realizing the long connection communications of TCP of the present invention
Extend, avoid the basal needs such as Single Point of Faliure, in the present embodiment, using each service by multiple Application Instances or many
Individual hardware server example externally provides the mode of service, as shown in Figure 2：
The long connection communication services of TCP are by T1, T2, T3 ... N number of Application Instance such as .Tn or hardware server example set
Into Http load bridgings are serviced by H1, H2, H3 ..., N number of Application Instance such as Hn or hardware server example are constituted；In Fig. 2
Identifier declaration it is as follows：
C1, C2, C3 are represented need to set up the client that TCP length is connected with server；
H1, H2, H3 represent the Http software instances or hardware server for providing load bridging service；
T1, T2, T3 represent the software instances or hardware server for providing TCP Connection Services；
D1, D2, D3 are represented and are provided data information memory, the relation of management or non-relational database management system；
So arrange advantage be：Same service any node breaks down or needs to restart when applying, and services and still may be used
Normally to run；If concurrency increases, performance is become bottleneck, can be solved concurrently to load by horizontal extension；Http bears
Carry shunting service dynamic calculation respectively application or server load, it is ensured that system stability reliably provides service.
The present invention realize the long connection communications of TCP load intelligent dispensing system crucial implementation process be：Dynamic is arranged
The each Application Instance of TCP communication platform or hardware server maximum number of connections, side-play amount；Dynamic calculation communication platform is respectively applied
Program example or hardware server current active connection number, remaining connection number；It is connection client point by Http interfaces dynamic
With the most light TCP Communications service examples of present load.
As shown in figure 3, another aspect of the present invention provides a kind of load smart allocation method for realizing the long connection communications of TCP,
Including：
Load bridging server receives the TCP connection requests that client sends；
The TCP connection numbers of the long connection communication servers of Http interface interchange TCP that load bridging server is provided, load meter
The service logic of calculation, calculates IP address, the TCP serve ports of the long connection communication servers of TCP for currently meeting load request
Distributing to client carries out TCP connections；
The long connection communication servers of TCP set up TCP and are connected and update clothes in the side-play amount for not up to arranging with client
Current connection number in business device list, for the Http interface interchanges that the load bridging server is provided；
When the long connection communication servers of TCP reach the connection number upper limit when being connected with client foundation, the long Connection Services of TCP
Device feedback message is redistributed to client, the Http service interfaces provided by client request load bridging server；
When the long connection communication servers of TCP disconnect, break with the connection of client, update and currently connect in server list
Number, for the Http interface interchanges that the load bridging server is provided.
With reference to shown in Fig. 2, in an embodiment of the present invention, load bridging server load is excessive then to increase load bridging clothes
Device is with load sharing and registers new demand servicing device address to carry out new load allocation rule for business；
The long connection communication server loads of TCP are excessive then to increase the long connection communication servers of TCP, and increases in information is arranged
Plus the parameter of new demand servicing device, the distribution of client connection resource is carried out according to new server list by Http service interfaces；
Then increase data storage server when data storage server load excessive, and change data storage server and match somebody with somebody
Put and realize load bridging, data hash storage.
In an embodiment of the present invention, realizing the load smart allocation method of the long connection communications of TCP also includes：
Safety certification step：Safety certification is carried out to user profile, client-side information, service switch-in information.
Intelligent monitoring step：When thread suspension or access delay occurs in the service container for monitoring each carrying Http interfaces
When, the service container is restarted in time and changes corresponding service interface or TCP communication socket.
Intrusion detection step：The state of monitoring server and network and early warning in time.
As shown in figure 4, the present invention provide realize the long connection communications of TCP load intelligent dispensing system and method it is concrete
Implementation process is：Arrange in function in the information of system, by WEB modes the setting currently long Connection Services of existing TCP are provided
Device list (IP address, online user's list caching KEY values, port, currently connect number, the maximum threshold values of connection number, side-play amount) and
Record when client needs to be connected with TCP service generation TCP length, needs first to access Http services in data storage shared region
Interface, is server address, the port of setting up the connection of TCP length that client distribution currently meets load request by the interface,
The long Connection Services of TCP set up TCP with client in the side-play amount for not up to arranging and are connected and update current in server list
Connection number, the long connection servers of TCP have reached company when the connection time difference problem produced if as client causes to set up connection
Limit is connected, is then divided again by client request Http service interface to client by the long connection server feedback messages of TCP
Match somebody with somebody, so, just obtain the technique effect of the horizontal extension for loading intelligent dispensing system to realizing the long connection communications of TCP.TCP
When long connection communication server disconnects, breaks with the connection of client, current connection number in server list is updated, client please
When asking Http service interfaces to be allocated, the server after the Http interface interchanges that the load bridging server is provided update is arranged
Current connection number in table.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention not by above-described embodiment
Limit, other any spirit without departing from the present invention and the change, modification, replacement made under principle, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. a kind of load intelligent dispensing system for realizing the long connection communications of TCP, it is characterised in that include：
Load bridging server, for providing based on the interface service of Http agreements, the long connection communication services of interface interchange TCP
The service logic that the TCP connection numbers of device, load are calculated, calculates the long connection communication servers of TCP for currently meeting load request
IP address, TCP serve ports distribute to client carries out TCP connections；
TCP communication server basis information management module, for arranging the Back ground Information and TCP of the long connection communication servers of TCP
The permission connection number of long connection communication server and port, maximum offset information；
The long connection communication servers of TCP, in the connection number side-play amount for not up to arranging, setting up TCP with client and being connected
And current connection number in server list is updated, for the Http interface interchanges that the load bridging server is provided；It is additionally operable to
With client set up be connected when the long connection communication servers of TCP reach connect the number upper limit when, feedback message to client, by visitor
The Http service interfaces that family end request load bridging server is provided are redistributed；
The long connection communication modules of TCP, for providing the long connection communication services of TCP of client connection, are carried out according to messaging protocol
Corresponding business logic processing, according to the connection number information of the long connection communication servers of TCP for arranging, builds in client connection
The connection number of the long connection communication server present load of dynamic calculation TCP and permission when vertical, disconnection, broken string；
Data storage server, for storing and the related client-side information of application, service logic data, server basis letter
Breath, user profile.
2. the load intelligent dispensing system for realizing the long connection communications of TCP according to claim 1, it is characterised in that：It is described
Load bridging server includes realizing the load equalizer of the long connection communication services of TCP by Http service interfaces, and is provided with
Non- obstruction, the event scheduling model with priority, the load equalizer processes all of load balancing by the scheduling model
Task is assigned, interprocess communication.
3. the load intelligent dispensing system for realizing the long connection communications of TCP according to claim 1, it is characterised in that also wrap
Include：
Security authentication module, for carrying out safety certification to user profile, client-side information, service switch-in information.
4. the load intelligent dispensing system for realizing the long connection communications of TCP according to claim 1, it is characterised in that also wrap
Include：
Intelligent monitored control module, for there is thread suspension or access delay when the service container for monitoring each carrying Http interfaces
When, the service container is restarted in time.
5. the load intelligent dispensing system for realizing the long connection communications of TCP according to claim 1, it is characterised in that also wrap
Include：
Intrusion detection module, the state for monitoring server and network and early warning in time.
6. a kind of load smart allocation method for realizing the long connection communications of TCP, it is characterised in that include：
Load bridging server receives the TCP connection requests that client sends；
The TCP connection numbers of the long connection communication servers of Http interface interchange TCP that load bridging server is provided, load are calculated
Service logic, calculates IP address, the distribution of TCP serve ports of the long connection communication servers of TCP for currently meeting load request
TCP connections are carried out to client；
The long connection communication servers of TCP set up TCP and are connected and update in the connection number side-play amount for not up to arranging with client
Current connection number in server list, for the Http interface interchanges that the load bridging server is provided；
When the long connection communication servers of TCP reach the connection number upper limit when being connected with client foundation, the long connection servers of TCP are anti-
Feedback message is redistributed to client, the Http service interfaces provided by client request load bridging server；
When the long connection communication servers of TCP disconnect, break with the connection of client, current connection number in server list is updated,
For the Http interface interchanges that the load bridging server is provided.
7. the load smart allocation method for realizing the long connection communications of TCP according to claim 6, it is characterised in that：
Load bridging server load is excessive, increase load bridging server with load sharing and register new demand servicing device address with
Carry out new load allocation rule；
The long connection communication server loads of TCP are excessive then to increase the long connection communication servers of TCP, and increases new in information is arranged
The parameter of server, by Http service interfaces the distribution of client connection resource is carried out according to new server list；
Then increase data storage server when data storage server load excessive, and it is real to change data storage server configuration
Existing load bridging, data hash storage.
8. the load smart allocation method for realizing the long connection communications of TCP according to claim 6, it is characterised in that also wrap
Include：
Safety certification step：Safety certification is carried out to user profile, client-side information, service switch-in information.
9. the load smart allocation method for realizing the long connection communications of TCP according to claim 6, it is characterised in that also wrap
Include：
Intelligent monitoring step：When there is thread suspension or access delay in the service container for monitoring each carrying Http interfaces, and
The Shi Chongqi service containers.
10. the load smart allocation method for realizing the long connection communications of TCP according to claim 6, it is characterised in that also wrap
Include：
Intrusion detection step：The state of monitoring server and network and early warning in time.
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| CN1852502A (en) * | 2006-05-29 | 2006-10-25 | 杭州华为三康技术有限公司 | Method for realizing load uniform in clustering system, system and storage controller |
| CN101431520A (en) * | 2008-12-24 | 2009-05-13 | 金蝶软件（中国）有限公司 | Method for establishing connection, method for re-orienting connection and correlated equipment |
| CN102123179A (en) * | 2011-03-28 | 2011-07-13 | 中国人民解放军国防科学技术大学 | Load balancing method and system applied to distributed application system |
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