Patents by Inventor James Evan Undery

James Evan Undery has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Sustaining session connections
    Patent number: 9560086
    Abstract: In an embodiment, techniques for sustaining session connections are provided. The techniques send heartbeat messages when not sending a message may cause the session connection to close because of a timeout condition. Heartbeat messages are valid transport layer messages that will be ignored by protocols at higher levels of a data communications stack. As an example, the techniques may send a TCP message containing only a carriage return and line feed (“CRLF”) in its payload. Because the TCP layer considers a message containing only a CRLF to be a valid TCP message, intermediary computing devices such as proxy servers may not interpret heartbeat messages as “keep alive” messages, and may sustain session connections.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: January 31, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: James Evan Undery, Mark Markaryan
  • Sustaining Session Connections
    Publication number: 20110246595
    Abstract: In an embodiment, techniques for sustaining session connections are provided. The techniques send heartbeat messages when not sending a message may cause the session connection to close because of a timeout condition. Heartbeat messages are valid transport layer messages that will be ignored by protocols at higher levels of a data communications stack. As an example, the techniques may send a TCP message containing only a carriage return and line feed (“CRLF”) in its payload. Because the TCP layer considers a message containing only a CRLF to be a valid TCP message, intermediary computing devices such as proxy servers may not interpret heartbeat messages as “keep alive” messages, and may sustain session connections.
    Type: Application
    Filed: June 13, 2011
    Publication date: October 6, 2011
    Applicant: MICROSOFT CORPORATION
    Inventors: James Evan Undery, Mark Markaryan
  • Sustaining session connections
    Patent number: 7962623
    Abstract: In an embodiment, techniques for sustaining session connections are provided. The techniques send heartbeat messages when not sending a message may cause the session connection to close because of a timeout condition. Heartbeat messages are valid transport layer messages that will be ignored by protocols at higher levels of a data communications stack. As an example, the techniques may send a TCP message containing only a carriage return and line feed (“CRLF”) in its payload. Because the TCP layer considers a message containing only a CRLF to be a valid TCP message, intermediary computing devices such as proxy servers may not interpret heartbeat messages as “keep alive” messages, and may sustain session connections.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: June 14, 2011
    Assignee: Microsoft Corporation
    Inventors: James Evan Undery, Mark Markaryan