Computer network communication method and apparatus

• US 7,251,695 B2
• Filed: 08/13/2001
• Issued: 07/31/2007
• Est. Priority Date: 08/17/2000
• Status: Active Grant

• Current Assignee: Aspentech Corporation
• Original Assignee: Aspen Technology (Telefonaktiebolaget LM Ericsson)
• Inventors: Gobler, Michael Roy, Khodko, Oleg M.
• Primary Examiner(s): Walsh; John B.
• Application Number:
  US09/928,667
• Publication Number:
  US 20020035597A1
• Time in Patent Office: 2,178 Days
• Field of Search: 709227-228, 709/237
• US Class Current: 709/227
• CPC Class Codes: H04L 63/029 Firewall traversal, e.g. tunnelling or, creating pinholes
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 67/34 involving the movement of software or configuration parameters network booting or remote initial program loading [RIPL] G06F9/4416
• CPC Class Codes: H04L 67/55 Push-based network services
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

The present invention provides a method and system for using standard global computer network communication protocol to implement server driven “push” technology. An initial communication connection is established between a server and a client. The connection is maintained by predefined periodic signals which are non-substantive messages from the server to the client. Upon existence of a substantive message at the server, the server transmits an appropriate predefined signal to the client. The client thereafter receives the substantive message. In one application, the server exchanges substantive messages between two clients and as such provides instant messaging.

Claims

1. A computer network communications method comprising the steps of:

transmitting from a client to a server a request to establish a connection;

iteratively

(a) maintaining the connection in the absence of a substantive message, wherein maintaining the connection includes transmitting a single character indicator pre-established to indicate a non-substantive message from the server to the client at short intervals; and

(b) transmitting from the server to the client a substantive message upon existence of the substantive message at the server, the single character indicator being outside of and separate from a substantive message.

2. A method as claimed in claim 1 wherein the step of transmitting a substantive message further includes transmitting from the server to the client a predefined signal indicating existence at the server of the substantive message.

3. A method as claimed in claim 2 further comprising the step of receiving at the server a client ready message indicating that the client is prepared to accept the substantive message.

4. A method as claimed in claim 1 wherein transmissions between the client and the server occur using HTTP protocol.

5. A method as claimed in claim 1 wherein client side transmissions are implemented at least partly in HTML.

6. A method as claimed in claim 1 wherein client side transmissions are implemented at least partly in JAVA.

7. A method as claimed in claim 1 wherein client side transmissions are implemented at least partly as an ActiveX control.

8. A method as claimed in claim 1 wherein the request to establish the connection includes an identifier that uniquely represents a current client application.

9. A method as claimed in claim 1 wherein the step of transmitting a substantive message includes the server transmitting as substantive messages to at least one client new offers and/or updates to offers in a trading application.

10. A method as claimed in claim 9 wherein the step of transmitting a substantive message further includes the server transmitting between two clients counter offers and respective replies, such that instant messaging between the two clients is effectively provided.

11. A method as claimed in claim 1 wherein the step of transmitting a substantive message further includes the server exchanging substantive messages between two clients and thereby providing instant messaging.

12. A computer network communications system comprising:

a request from a client computer to a server computer for establishing a connection; and

the server, in response to the request, maintaining the connection by transmitting a single character indicator pre-established to indicate a non-substantive message from the server to the client at short intervals and, upon existence of a substantive message at the server, transmitting to the client the substantive message, the single character indicator being outside of and separate from a substantive message.

13. A system as claimed in claim 12 wherein upon existence of the substantive message at the server, the server further transmits to the client a predefined signal indicating existence at the server of the substantive message.

14. A system as claimed in claim 13 wherein the server receives a client ready message indicating that the client is prepared to accept the substantive message.

15. A system as claimed in claim 12 wherein transmissions between the client and the server occur using HTTP protocol.

16. A system as claimed in claim 12 wherein client side transmissions are implemented at least partly in HTML.

17. A system as claimed in claim 12 wherein client side transmissions are implemented at least partly in JAVA.

18. A system as claimed in claim 12 wherein client side transmissions are implemented at least partly as an ActiveX control.

19. A system as claimed in claim 12 wherein the request transmitted from the client includes an identifier that uniquely represents a current client application.

20. A system as claimed in claim 12 wherein the server transmits as substantive messages to at least one client new offers and/or updates to offers in a trading application.

21. A system as claimed in claim 20 wherein the server further transmits between two clients counteroffers and respective replies, such that instant messaging between the two clients is effectively provided.

22. A system as claimed in claim 12 wherein the server further exchanges substantive messages between two clients and thereby provides instant messaging.

23. A computer network communications method comprising the steps of:

transmitting from a client to a server a request to establish a connection;

iteratively

(a) maintaining the connection in the absence of a substantive message, wherein maintaining the connection includes transmitting a single character indicator pre-established to indicate a non-substantive message from the server to the client at short intervals; and

(b) transmitting from the server to the client a substantive message upon existence of the substantive message at the server, the single character indicator being outside of and separate from a substantive message, wherein the transmitted single character indicator comprises a single bit.