Method and system for brokering messages in a distributed system

1. A distributed system, comprising:

a first message broker configured for encapsulating and exchanging a message among a plurality of clients and servers using incompatible protocols;

an intermediary client interfacing the first message broker and a user agent, and configured for generating the message, wherein a user of the user agent is unable to view the message generated by the intermediary client;

a second message broker configured for communicating with the first message broker over a data network, the second message broker interfacing an application server;

a storage device for storing a resource remote from a user agent, said resource containing markup source and at least one instruction for calling the second message broker to communicate the message to an application at the application server; and

a preprocessor configured for preprocessing the resource in response to a communication from the user agent specifying the resource, the preprocessing including:

in response to executing the at least one instruction, calling the second message broker based on the communication to communicate the message to the application at the application server in a protocol not supported by the user agent;

generating markup based on the markup source contained in the resource; and

sending the generated markup to the user agent.

2. A distributed system according to claim 1 , wherein:

the communication from the user agent includes a parameter specifying the application; and

said calling the second message broker to communicate the message to the application is further based on the parameter specifying the application.

3. A distributed system according to claim 1 , wherein the user agent includes a browser.

4. A distributed system according to claim 1 , wherein the intermediary client includes a web server and resides on an edge server along with the first message broker.

5. A distributed system according to claim 1 , wherein the resource includes a file containing the markup source and the at least one instruction, said at least one instruction including a server-side preprocessing instruction.

6. A distributed system according to claim 5 , wherein the server-side preprocessing instruction includes one of a Hypertext Preprocessor (PHP) instruction, an Active Server Pages (ASP) instruction, a Perl instruction, and a ColdFusion instruction.

7. A distributed system according to claim 5 , wherein the server-side preprocessing instruction includes a call to the second message broker via an application programming interface implemented by the first message broker.

8. A distributed system according to claim 7 , wherein the application programming interface implemented by the first message broker includes at least a register instruction for initiating a session.

9. A distributed system according to claim 1 , wherein said preprocessing further includes:

receiving a reply from the application via the second message broker; and

generating the markup based further on the reply from the application.

10. A distributed system according to claim 1 , wherein the first message broker is configured to determine a current address of a network node of the application server.

11. A method of communicating a message in a distributed computer system from a user agent to an application at an application server, comprising:

generating, by an intermediary client, the message;

receiving a communication via a first message broker from the user agent identifying a resource stored remote from the user agent, said resource containing markup source and at least one instruction for calling a second message broker based on the communication to communicate the message to the application at the application server; and

preprocessing, by a hypertext server, the resource specified in the communication, said preprocessing including:

in response to executing the at least one instruction, calling the second message broker based on the communication to communicate the message to the application at the application server in a protocol not supported by the user agent; and

generating markup based on the markup source contained in the resource; and

sending the generated markup to the user agent,

wherein the intermediary client interfaces the first message broker and the user agent, and a user of the user agent is unable to view the message generated by the intermediary client.

12. A method according to claim 11 , wherein:

the communication from the user agent includes a parameter specifying the application; and

said calling the message second broker to communicate the message to the application is further based on the parameter specifying the application.

13. A method according to claim 11 , wherein the user agent includes a browser.

14. A method according to claim 11 , wherein the resource is stored at a web server.

15. A method according to claim 11 , wherein the resource includes a file containing the markup source and the at least one instruction, said at least one instruction including a server-side preprocessing instruction.

16. A method according to claim 15 , wherein the server-side preprocessing instruction includes one of a Hypertext Preprocessor (PHP) instruction, an Active Server Pages (ASP) instruction, a Perl instruction, and a ColdFusion instruction.

17. A method according to claim 15 , wherein the server-side preprocessing instruction includes a call to the second message broker via an application programming interface implemented by the first message broker.

18. A method according to claim 17 , wherein the application programming interface implemented by the first message broker includes at least a register instruction for initiating a session.

19. A method according to claim 11 , wherein said preprocessing further includes:

receiving a reply from the application via the second message broker; and

generating the markup based further on the reply from the application.

20. A method according to claim 11 , wherein the first message broker is configured to determine a current address of a network node of the application server and to encapsulate messages among a plurality of clients and servers using incompatible protocols.

21. A non-transitory computer-readable medium storing, remote from a user agent, a resource containing markup source and one or more instructions for communicating a message in a distributed computer system from the user agent to an application at an application server, said one or more instructions being configured, when preprocessed by a hypertext server in response to a communication received by a first message broker from the user agent identifying the non-transitory computer-readable medium, to cause one or more processors to perform the steps of:

calling a second message broker to communicate the message based on the communication to the application at the application server in a protocol not supported by the user agent; and

generating markup based the markup source contained in the resource,

wherein the message is generated by an intermediary client interfacing the first message broker and a user agent, and a user of the user agent is unable to view the message generated by the intermediary client.

22. A non-transitory computer-readable medium according to claim 21 , wherein:

the communication from the user agent includes a parameter specifying the application; and

said calling the second message broker to communicate the message to the application is further based on the parameter specifying the application.

23. A non-transitory computer-readable medium according to claim 21 , wherein the user agent includes a browser.

24. A non-transitory computer-readable medium according to claim 21 , wherein the hypertext server includes a web server.

25. A non-transitory computer-readable medium according to claim 21 , wherein the resource includes a file containing the markup source and said one or more instructions, said one or more instructions including a server-side preprocessing instruction.

26. A non-transitory computer-readable medium according to claim 25 , wherein the server-side preprocessing instruction includes one of a Hypertext Preprocessor (PHP) instruction, an Active Server Pages (ASP) instruction, a Perl instruction, and a ColdFusion instruction.

27. A non-transitory computer-readable medium according to claim 25 , wherein the server-side preprocessing instruction includes a call to the second message broker via an application programming interface implemented by the first message broker.

28. A non-transitory computer-readable medium according to claim 27 , wherein the application programming interface implemented by the first message broker includes at least a register instruction for initiating a session.

29. A non-transitory computer-readable medium according to claim 21 , wherein said one or more instructions are further configured to perform the steps of:

receiving a reply from the application via the second message broker; and

generating the markup based further on the reply from the application.

30. A non-transitory computer-readable medium according to claim 21 , wherein the first message broker is configured to determine a current address of a network node of the application server and to encapsulate messages among a plurality of clients and servers using incompatible protocols.