CN101026622B - Distributed system object request transmission method, device and distributed system - Google Patents
Distributed system object request transmission method, device and distributed system Download PDFInfo
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- CN101026622B CN101026622B CN2007100008554A CN200710000855A CN101026622B CN 101026622 B CN101026622 B CN 101026622B CN 2007100008554 A CN2007100008554 A CN 2007100008554A CN 200710000855 A CN200710000855 A CN 200710000855A CN 101026622 B CN101026622 B CN 101026622B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
Abstract
The method includes steps: using a transferring concourse port to carry out connection between process in application end and process in object service end; dividing former one-step connection operation into two stages to execute; inserting concourse service of port between client end and service end; centralizing former dispersive CORBA ports to a port opened so as to reach convergent purpose. The invention also discloses corresponding distributed type system and relevant equipment. The invention reduces complexity of configuring firewall between application client end and object server end effectively. Moreover, when service providing point is needed to expanded in next time, it is not needed to carry out operation for opening port for firewall again so as to reduce complexity of subsequent maintenance.
Description
Technical field
The present invention relates to OO distributed proccessing field, be specifically related to a kind of distributed system object requests transmission method, equipment and corresponding distributed system.
Background technology
Along with the continuous development of computer technology and network technology, distributed system architecture is just obtaining application more and more widely.Distributed system adopts Common Object Request Broker Architecture (CORBA:Common Object Request Broker Architecture) as its solution usually, can realize the Distributed Calculation strategy that service provision point is served as by many computers, with the overall performance of elevator system, and realize multi-vendor interconnecting.
In Distributed Application, for the purpose of network security, the mode of often taking to construct fire compartment wall between inner network and external network guarantees the fail safe of Intranet.Yet based on the characteristics that CORBA realizes, the Object Request Broker of each distributed system service processes (ORB:Object Request Broker) all needs to take a socket port.If the service processes that provides is numerous, then cause opening a large amount of socket ports, corresponding fire compartment wall has to open large quantities of ports, carries out purposes such as system operation, maintenance to reach applications client by object requests from external network.
There is following defective in above-mentioned implementation method: the one, fire compartment wall need be safeguarded a large amount of ports, dispose loaded down with trivial details, maintenance cost is high and cause intranet security to reduce significantly; The one,, when system need increase objects services end as service provision point, need carry out the operation of open-ended, follow-up maintenance complexity again to fire compartment wall.
Summary of the invention
The embodiment of the invention provides a kind of distributed system object requests transmission method that can reduce the firewall configuration maintenance difficulties, comprising: set up the applications client process to first connection of converging port; Be sent to the described port that converges by the described first real ports information that connects the objects services end process that described applications client process need be connected; According to the real ports information of described objects services end process, set up described second connection of converging port to the real ports of objects services end process; Described applications client process undertaken by described transfer of converging port and described objects services end process between the information transmission.
The embodiment of the invention also provides a kind of server device that converges, comprise: first link block, be used to set up with the applications client process between first be connected, receive the real ports information that connects the objects services end process that the described applications client process that sends need connect by described first; Second link block is used for the real ports information of the objects services end process that receives according to described first link block, sets up second between the real ports with objects services end process and is connected.
In addition, the embodiment of the invention also provides two kinds of distributed systems, a kind ofly comprises applications client, objects services end and converges service end; Described applications client comprises the application process module and converges service module; Described application process module is used to be initiated to the connection of objects services end process; The described service module that converges is used for the connection initiated according to described application process module, sets up and converges first between the port and is connected, and by described first connection real ports information of described objects services end process is sent to the described port that converges; Described objects services end is used to carry out described objects services end process; The described service end that converges is used to provide the described port that converges, and according to from the described real ports information that converges the objects services end process that port receives, sets up second between the real ports with described objects services end process and is connected.
Another kind comprises applications client, objects services end, converges client and converges service end; Described applications client is used to carry out the applications client process, is initiated to the connection of objects services end process; The described client that converges is used for the applications client process that the described applications client of pull-up is carried out, and when described applications client was initiated to the connection of objects services end process, system's socket handling function that needs are called replaced with respective function; By described respective function described connection to objects services end process is implemented as and converges first the port and be connected, and be sent to the described port that converges by the described first real ports information that connects described objects services end process; Described objects services end is used to carry out described objects services end process; The described service end that converges is used to provide the described port that converges; According to from the described real ports information that converges the described objects services end process that port receives, set up second between the real ports with described objects services end process and be connected.
The embodiment of the invention adopts the applications client process is converged the method that port carries out to the connection of objects services end process by a transfer, an original step attended operation is divided into two sections execution, the client of sending application request with insertion trunking service between the objects services end of objects services is provided; Make the CORBA port of original dispersion can focus on opening on the port, reach the purpose of port convergence; Effectively reduce the complexity of firewall configuration between applications client and the objects services end, reduce maintenance cost, the fail safe that has improved network; And, when needing expansion service to provide, needn't carry out the operation of open-ended when follow-up more again to fire compartment wall, reduced the complexity of follow-up maintenance.
Description of drawings
Fig. 1 is the distributed system object requests transmission method schematic flow sheet of the embodiment of the invention;
Fig. 2 be the embodiment of the invention converge the server device structural representation;
Fig. 3 be the embodiment of the invention converge the client device structural representation;
Fig. 4 is the applications client device structure schematic diagram of the embodiment of the invention;
Fig. 5 is a kind of distributed system architecture schematic diagram of the embodiment of the invention;
Fig. 6 is the another kind of distributed system architecture schematic diagram of the embodiment of the invention.
Also the present invention is described in further detail in conjunction with the accompanying drawings below by embodiment.
Embodiment
In a kind of distributed system object requests transmission method that the embodiment of the invention provides, the applications client process is converged port to the connection of objects services end process by a transfer carry out, make an original step attended operation be divided into two sections execution.Above-mentioned transfer connected mode can be applicable to that respective function of the present invention realizes by original system socket handling function is replaced with, and also can finish by the communication processing section that direct modification CORBA realizes.In the method that adopts function to replace, at existing different operating system platform, the present invention gives corresponding preferred implementation.Simultaneously, the present invention also provides relevant device and the distributed system that is applied to above-mentioned object requests transmission method.Below respectively the inventive method, equipment and system are elaborated.
The distributed system object requests transmission method of the embodiment of the invention, flow process comprises as shown in Figure 1:
A1, set up the applications client process, and be sent to the described port that converges by the described first real ports information that connects the objects services end process that described applications client process need be connected to first connecting of converging port;
In existing system, the applications client process generally connects realization by a step to the connection of objects services end process, is usually expressed as calling system socket handling function, for example connect ().The present invention then is that branch is carried out connection procedure for two sections, this step is preceding half section of connection, be connected to one earlier by the applications client process and converge port, and real ports information that will finally need connect sends to and converges port, think that the second half section of connection gets ready, preceding half section that will connect herein is called first and connects; The second half section that connects is called second to be connected.
The segment connection method that the embodiment of the invention provides can adopt dual mode to carry out, a kind of is the communication processing section of realizing by direct modification CORBA, it is no longer directly connected when carrying out the connection of object but carries out according to transfer mode provided by the invention.But this implementation method need be carried out general structural modification to existing system, may produce bigger cost expense, and makes amendment in system inside and to increase system risk easily; Therefore, provide a kind of embodiment preferred below the embodiment of the invention, promptly replace by system's socket handling function that needs are called and realize, this moment, steps A 1 can comprise:
A11, pull-up applications client process;
For convenience of description, the module that below will realize pull-up applications client process is called and converges client, and the pull-up operation of its realization is promptly represented the subprocess of applications client process creation for self;
A12, when the applications client process initiate to connect, system's socket handling function that needs are called replaces with respective function; As the parent process of applications client process, this replacement operation is by converging client executing.Corresponding to different operating system platforms, replacement operation can have different executive modes:
1. for the operating system of modes such as the injection of support process, system's hook, Win32 series operating system for example, can adopt in such a way: converge client and inject, respective function is loaded into replacement original system socket handling function in the subprocess using the client process process of carrying out; Like this, after this, the performed attended operation function of applications client process has been exactly the respective function after replacing;
2. for the operating system of supporting dynamic base prestrain mode, UNIX/Linux series operating system for example, can adopt in such a way: will with system's socket handling function respective function of the same name, be preset in the dynamic base that needs prestrain; After the applications client process was pulled up, system promptly can load the prestrain storehouse that comprises respective function earlier; When the applications client process was initiated call connected dynamic base function, performed was exactly the respective function that is arranged in the prestrain dynamic base, rather than original system socket handling function;
A13, carry out by this respective function and to converge first of port and connect;
Alleged respective function is carried out the operation of two steps among the present invention, this step is the back operation, carry out the applications client process and connect to the socket that converges port (Socket), this step can adopt existing connected mode, for example uses a connect () order etc.;
A14, first connect based on this, the real ports information of the objects services end process that described applications client process need be connected is sent to and converges port;
This step is the back single stepping that respective function is carried out, and respective function can be by sending a self-defining protocol frame, and with real ports information, for example IP address, port numbers etc. send to and converge port; For convenience of description, below will be positioned at the processing module that converges port and be called and converge service end; By the two steps operation of respective function, first work that connects of setting up has just been finished;
A2, according to the real ports information of the objects services end process that obtains, set up the described port that converges and connect to second of the real ports of objects services end process,
This step is carried out in a conventional manner by converging service end, for example carries out a connect () order; After this step is finished, promptly form one, be responsible for the forwarding behavior of the information of finishing by converging service end in this channel interior by the interface channel of applications client to the objects services end;
A3, to the successful connection of described applications client process report objects services end, return and be connected to the described link information that converges port;
Respective function returns to the applications client process with being connected to the Socket port that converges service end after carrying out the real ports successful connection; What above-mentioned segmentation multistep operation was presented for upper layer application only is to call contiguous function to connect, and returns the single stepping of successful connection information;
A4, applications client process proceed to the information transmission of objects services end process by the transfer of converging port;
After interface channel is set up, the applications client process is when carrying out the action of real CORBA object reference, realize consistent with original CORBA, need not do any special processing, interoperability agreement (GLOP:General Inter_ORB Protocol) information is all by converging the port transfer between just in fact all general object request brokers (ORB);
After A5, connection are set up, be connected, then carry out corresponding disconnected operation if objects services end process disconnects with applications client process any one party:
When objects services end process is closed connection,
A51, converge service end corresponding close with objects services end process and applications client process between be connected, finish the closing motion of each corresponding Socket port;
A52, applications client process also can detect the situation of opposite end disconnection, carry out corresponding disconnected operation, and specific operation process can be determined by using.
Close connection when the applications client process, promptly withdraw from when using,, then needn't operate especially if connection before is to be undertaken by the mode of revising the CORBA realization; If adopt the function substitute mode to carry out, then have:
A53, applications client process withdraw from;
A54, converge the cleanup action that the client executing function is replaced; The cleanup action that the process of for example finishing is injected, or with the dynamic base example deletion of correspondence etc.
Below relevant device provided by the invention is elaborated.
As shown in Figure 2, be a kind of server device 30 that converges, comprise first link block 31 and second link block 32;
As shown in Figure 3, be a kind of client device 40 that converges, comprise process monitoring module 41 and link block 42;
As shown in Figure 4, be a kind of applications client equipment 50, comprise application process module 51 and converge service module 52;
Below two kinds of distributed systems provided by the invention are elaborated.
One, corresponding to carrying out the method that segmented of the present invention connects in the mode of revising the CORBA realization, independently control by the applications client process for the processing that connects and to finish, its system configuration comprises applications client 101, objects services end 102 and converges service end 103 as shown in Figure 5;
Applications client 101 comprises application process module 1011 and converges service module 1012;
Application process module 1011 is used to be initiated to the connection of objects services end process;
Converge service module 1012, be used for the connection initiated according to application process module 1011, set up and converge first between the port and is connected, and by described first connection real ports information of objects services end process is sent to and converges port;
Objects services end 102 is used to carry out objects services end process;
Converge service end 103, be used to provide and converge port; According to from the described real ports information that converges the objects services end process that port receives, set up second between the real ports with described objects services end process and be connected.
Two, carry out the method that segmented of the present invention connects corresponding to the mode of replacing with function, finish by converging the respective function that client is substituted in the applications client process for the processing that connects, its system configuration comprises applications client 201, objects services end 202, converges service end 203 and converges client 204 as shown in Figure 6;
Objects services end 202 is used to carry out objects services end process;
In above-mentioned two kinds of distributed systems, the alleged service end that converges can be distributed in arbitrarily on all kinds of work stations, the PC, finishes the trunking of Home Network service provision point, calls for the applications of firewall-penetrating to facilitate.
Should be appreciated that the software of realizing the inventive method can be stored in the computer-readable medium, this software when carrying out, comprise the steps: to set up the applications client process to first connection of converging port; Connect by described first, the real ports information of the objects services end process that described applications client process need be connected is sent to the described port that converges; According to the real ports information of described objects services end process, set up described second connection of converging port to the real ports of objects services end process; Described applications client process undertaken by described transfer of converging port and described objects services end process between the information transmission; Described computer-readable recording medium, as: ROM/RAM, magnetic disc, CD etc.
In the embodiment of the invention, employing is converged method that port carry out to the connection of objects services end process by a transfer with the applications client process, an original step attended operation is divided into two sections execution, the client of sending application request with insertion trunking service between the objects services end of objects services is provided; Make the CORBA port of original dispersion can focus on opening on the port, reach the purpose of port convergence; Effectively reduce the complexity of firewall configuration between applications client and the objects services end, reduce maintenance cost, the fail safe that has improved network; And, when needing expansion service to provide, needn't carry out the operation of open-ended when follow-up more again to fire compartment wall, reduced the complexity of follow-up maintenance.
More than distributed system object requests transmission method provided by the present invention and relevant device and distributed system are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a distributed system object requests transmission method is characterized in that, comprising:
Set up the applications client process to first connection of converging port;
Connect by described first, the real ports information of the objects services end process that described applications client process need be connected is sent to the described port that converges;
According to the real ports information of described objects services end process, set up described second connection of converging port to the real ports of objects services end process;
Described applications client process undertaken by described transfer of converging port and described objects services end process between the information transmission.
2. distributed system object requests transmission method according to claim 1 is characterized in that, described first step of connecting of setting up comprises:
Pull-up applications client process,
When described applications client process was initiated to connect, system's socket handling function that needs are called replaced with respective function, carried out described first of the port that converges by described respective function and connected.
3. distributed system object requests transmission method according to claim 2 is characterized in that, the step that described system's socket handling function that needs are called replaces with respective function is:
The process of carrying out is injected, and replaces invoked system socket handling function to be loaded in the described applications client process described respective function.
4. distributed system object requests transmission method according to claim 2 is characterized in that this method further comprises: will with system's socket handling function respective function of the same name, be preset in the prestrain dynamic base;
The step that described system's socket handling function that needs are called replaces with respective function is:
Call the respective function that is arranged in the prestrain dynamic base.
5. according to any described distributed system object requests transmission method of claim 1～4, it is characterized in that, after described second connection is set up, also comprise:
To the successful connection of described applications client process report objects services end, return and be connected to the described link information that converges port.
6. according to any described distributed system object requests transmission method of claim 1～4, it is characterized in that, also comprise: when described objects services end process is closed connection,
Describedly converge that port is corresponding closes and being connected of described objects services end process and described applications client process;
Described applications client process detects the opposite end disconnection, carries out corresponding disconnected operation.
7. according to any described distributed system object requests transmission method of claim 2～4, it is characterized in that, also comprise: when described applications client process withdraws from application, carry out the cleanup action that described function is replaced.
8. one kind is converged server device, it is characterized in that, comprising:
First link block, be used to set up with the applications client process between first be connected, receive the real ports information that connects the objects services end process that the described applications client process that sends need connect by described first;
Second link block is used for the real ports information of the objects services end process that receives according to described first link block, sets up second between the real ports with objects services end process and is connected.
9. a distributed system is characterized in that: comprise applications client, objects services end and converge service end;
Described applications client comprises the application process module and converges service module;
Described application process module is used to be initiated to the connection of objects services end process;
The described service module that converges is used for the connection initiated according to described application process module, sets up and converges first between the port and is connected, and by described first connection real ports information of described objects services end process is sent to the described port that converges;
Described objects services end is used to carry out described objects services end process;
The described service end that converges is used to provide the described port that converges, and according to from the described real ports information that converges the objects services end process that port receives, sets up second between the real ports with described objects services end process and is connected.
10. a distributed system is characterized in that: comprise applications client, objects services end, converge client and converge service end;
Described applications client is used to carry out the applications client process, is initiated to the connection of objects services end process;
The described client that converges is used for the applications client process that the described applications client of pull-up is carried out, and when described applications client was initiated to the connection of objects services end process, system's socket handling function that needs are called replaced with respective function; By described respective function described connection to objects services end process is implemented as and converges first the port and be connected, and be sent to the described port that converges by the described first real ports information that connects described objects services end process;
Described objects services end is used to carry out described objects services end process;
The described service end that converges is used to provide the described port that converges; According to from the described real ports information that converges the described objects services end process that port receives, set up second between the real ports with described objects services end process and be connected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100008554A CN101026622B (en) | 2007-01-12 | 2007-01-12 | Distributed system object request transmission method, device and distributed system |
| PCT/CN2007/070986 WO2008083567A1 (en) | 2007-01-12 | 2007-10-30 | A method for transmitting object requests in a distributed system and the device and distributed system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100008554A CN101026622B (en) | 2007-01-12 | 2007-01-12 | Distributed system object request transmission method, device and distributed system |
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| CN101026622A CN101026622A (en) | 2007-08-29 |
| CN101026622B true CN101026622B (en) | 2010-10-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101026622B (en) * | 2007-01-12 | 2010-10-06 | 华为技术有限公司 | Distributed system object request transmission method, device and distributed system |
| CN102033959A (en) * | 2010-12-29 | 2011-04-27 | 北京播思软件技术有限公司 | Method for transferring objects in distributed calculating system |
| CN105162858B (en) * | 2015-08-20 | 2018-11-27 | 中国人民解放军国防科学技术大学 | For general transmission protocol frame, communication system and the method for CORBA middleware |
| CN106209776A (en) * | 2016-06-24 | 2016-12-07 | 北京金山安全管理系统技术有限公司 | Intercept the method and system of raw socket input and output |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6470389B1 (en) * | 1997-03-14 | 2002-10-22 | Lucent Technologies Inc. | Hosting a network service on a cluster of servers using a single-address image |
| CN1466840A (en) * | 2000-09-28 | 2004-01-07 | ����ɭ�绰�ɷ�����˾ | Virtual IP framework and interfacing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050005259A1 (en) * | 2003-03-14 | 2005-01-06 | Infowave Software, Inc. | System and method for communication and mapping of business objects between mobile client devices and a plurality of backend systems |
| CN100505762C (en) * | 2006-04-19 | 2009-06-24 | 华中科技大学 | Distributed multi-stage buffer storage system suitable for object network storage |
| CN101026622B (en) * | 2007-01-12 | 2010-10-06 | 华为技术有限公司 | Distributed system object request transmission method, device and distributed system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6470389B1 (en) * | 1997-03-14 | 2002-10-22 | Lucent Technologies Inc. | Hosting a network service on a cluster of servers using a single-address image |
| CN1466840A (en) * | 2000-09-28 | 2004-01-07 | ����ɭ�绰�ɷ�����˾ | Virtual IP framework and interfacing method |
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| Title |
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| CN 1466840 A,全文. |
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| WO2008083567A1 (en) | 2008-07-17 |
| CN101026622A (en) | 2007-08-29 |
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