Testing and debugging tool for network applications

• US 6,219,803 B1
• Filed: 06/30/1998
• Issued: 04/17/2001
• Est. Priority Date: 07/01/1997
• Status: Expired due to Term

• Current Assignee: Progress Software Corporation
• Original Assignee: Progress Software Corporation
• Inventors: Swan, David M., Bardani, Robert L. Jr., Casella, Stephen R.
• Primary Examiner(s): Iqbal, Nadeem
• Application Number:
  US09/107,499
• Time in Patent Office: 1,022 Days
• Field of Search: 714/38, 714/4, 714/39, 714/40, 714/47, 714/2, 714/18, 714/25, 714/26, 714/3, 713/200, 713/201, 713/202, 709/227, 709/203, 709/224
• US Class Current: 714/38.13
• CPC Class Codes: H04L 43/50 Testing arrangements
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 67/564 Enhancement of application control based on intercepted application data
• CPC Class Codes: H04L 67/565 Conversion or adaptation of application format or content adding application control or application functional data H04L67/561
• CPC Class Codes: H04L 67/75 Indicating network or usage conditions on the user display
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A software development tool permits capture, modification and recording of transactional messages that are transmitted between a client and a server in a computer network. A proxy is employed to capture messages such as requests and responses that are in transit between the client and the server. The captured requests and responses can be displayed and modified before being retransmitted via the proxy. Further, transaction records can be selectively provided to at least one software application for analysis.

Claims

1. A software tool that facilitates development of an application that operates in a computer network having a first device that transits a data unit in a predetermined communication protocol and a second device, comprising:

at least one proxy having a distinct IP address that is configured for operation with the predetermined communication protocol, the first device transmits said data unit to said at least proxy at said IP address, said at least one proxy is operative to capture the data unit that is formatted in said predetermined protocol; and

an editor that selectively modifies said data unit after said data unit is captured, wherein said proxy continues the transmission of said data unit toward the second device in said predetermined protocol.

2. The software tool of claim 1 further including a routine that displays information including a representation of the data unit that is captured by the proxy routine.

3. The software tool of claim 2 further including a view filter that prevents specified information from being displayed.

4. The software tool of claim 1 further including a stream filter that modifies said data unit based upon predetermined criteria.

5. The software tool of claim 1 further including a trigger function that interrupts transmission between the first device and the second device upon detection of a predetermined operational condition.

6. The software tool of claim 1 further including a routine that prompts transmission of a representation of the data unit to at least one selected application that is coupled with the software tool.

7. A method for testing an application that operates on a computer network having a first device and a second device comprising the steps of:

transmitting a data unit from the first device toward the second device via a proxy;

capturing the data unit with the proxy;

selectively modifying a portion of the data unit; and

transmitting the modified data unit from the proxy toward the second device.

8. The method of claim 7 further including the step of displaying information that includes a representation of the data unit that is captured by the proxy.

9. The method of claim 8 further including the step of filtering the information prior to display.

10. The method of claim 7 further including the step of applying a filter to the data unit.

11. The method of claim 7 further including the step of interrupting transmission of the data unit between the first device and the second device upon the detection of a predetermined condition.

12. The method of claim 7 further including the step of providing a representation of the data unit that is captured by the proxy to at least one selected application.

13. A testing and debugging tool that facilitates development of a first application that operates on a first device in a computer network and is responsive to a second application that operates on a second device in the computer network, comprising:

at least one proxy that is associated with a predetermined network communication protocol and that is operative to receive a transaction request that are formatted in said predetermined protocol and transmitted from the second application toward the first application; and

an editor that modifies said transaction request if desired and then prompts transmission of said transaction request toward said first application;

said at least one proxy being further operative to receive a transaction response that is formatted in said predetermined protocol and transmitted from the first application toward said second application in response to said transaction request,

said editor being operative to modify said transaction response if desired and prompt transmission of said transaction response toward said second application,

whereby the transaction comprising said request and said response is modifiable.

14. The software tool of claim 13 further including a routine that displays a representation of at least one of the transaction request and the transaction response.

15. The software tool of claim 14 further including a view filter that selectively filters information that is displayed.

16. The software tool of claim 13 further including a stream filter that selectively filters the transaction requests and responses.

17. The software tool of claim 13 further including a trigger that interrupts transmission between the first device and the second device upon the detection of a predetermined condition.

18. The software tool of claim 13 further including a routine that provides a representation of the transaction to a third application.