Asynchronous hypertext messaging system and method

• US 6,754,621 B1
• Filed: 10/06/2000
• Issued: 06/22/2004
• Est. Priority Date: 10/06/2000
• Status: Active Grant

• Current Assignee: Refinitiv US Organization, LLC (Refinitiv US Holdings, Inc.)
• Original Assignee: AV Technologies LLC (Acacia Research Corporation)
• Inventors: Hellon, Craig, Cunningham, Andrew
• Primary Examiner(s): Wiley, David
• Assistant Examiner(s): Avellino, Joseph E.
• Application Number:
  US09/684,309
• Time in Patent Office: 1,355 Days
• Field of Search: 709/217, 709/219, 709/227, 709/230-1, 709/232, 705/37
• US Class Current: 704/219
• CPC Class Codes: G06Q 40/04 Trading; Exchange, e.g. stocks, commodities, derivatives or currency exchange
• CPC Class Codes: H04L 63/029 Firewall traversal, e.g. tunnelling or, creating pinholes
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/168 above the transport layer
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/55 Push-based network services
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

An asynchronous hypertext messaging system and method are disclosed. The system and method use existing hypertext transfer protocols and is capable of transmitting real-time asynchronous data between server and client regardless of firewalls or proxy servers implemented at the client or the server. In a communication system comprising a client and server interconnected by an internet, initial authentication is performed initially between the server and the client. A secure log in is performed by the client with the server in conjunction with a possible java applet download. The communication server then initiates a multiplexed virtual connection between the server and the client and transmission of asynchronous real-time data can occur over the virtual connection. The virtual connection is periodically refreshed by a request issued from the java applet.

Claims

1. A method of transmitting asynchronous hypertext messages from a server to a client interconnected by an internet, said method comprising the steps of:

transmitting a HTTP request identifying said client from said client to said server;

initiating a virtual connection from said server to said client wherein said server transmits a HTTP header signifying a large HTML document; and

transmitting asynchronous hypertext messages encoded in said HTML document from said server to said client via said virtual connection;

wherein said virtual connection is maintained by periodically refreshing said HTML document at said client.

2. The method in accordance with claim 1, further comprising the step of transmitting asynchronous hypertext messages from said client to said server via said virtual connection.

3. The method in accordance with claim 1, wherein said first step of transmitting said HTTP request identifying said client is transmitted via secure socket layer protocol.

4. The method in accordance with claim 1, wherein said step of initiating said virtual connection is performed by a TCP/IP socket based application programming interface residing on said server.

5. The method in accordance with claim 4, wherein said step of initiating said virtual connection is performed by a TCP/IP java applet residing on said client.

6. The method in accordance with claim 1, wherein said request further comprises a transmitted key.

7. The method in accordance with claim 6, wherein said transmitted key is a public key.

8. The method in accordance with claim 6, wherein said transmitted key is a private encryption key.

9. The method in accordance with claim 1, wherein said client is a java applet.

10. The method in accordance with claim 1, wherein said server is a communication server.

11. The method in accordance with claim 10, wherein said communication server is further connected to a resource server.

12. The method in accordance with claim 10 wherein said resource server supplies stock prices.

13. The method in accordance with claim 10 wherein said resource server supplies foreign exchange quotes.

14. The method in accordance with claim 1 wherein multiple asynchronous hypertext messages are multiplexed into said virtual channel.

15. The method in accordance with claim 1, further comprising the step of transmitting a heartbeat message from said server to said client at predefined intervals.

16. The method in accordance with claim 1, wherein the step of transmitting asynchronous hypertext messages is duplicated to produce multiple copies of the same message.

17. The method in accordance with claim 1, wherein said virtual connection is monitored for delays.

18. The method in accordance with claim 17, wherein an optimal virtual connection is found based upon said delays.