Method and system for message transfer session management

• US 6,446,144 B1
• Filed: 11/21/2000
• Issued: 09/03/2002
• Est. Priority Date: 04/01/1998
• Status: Expired due to Term

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Arnon, Yoel, Habusha, Uri
• Primary Examiner(s): Gaffin, Jeffrey
• Assistant Examiner(s): ELAMIN, ABDELMONIEM I
• Application Number:
  US09/717,737
• Time in Patent Office: 651 Days
• Field of Search: 710/29, 709/221, 379/202, 379/229
• US Class Current: 710/29
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/193 at the transport layer, e.g. TCP related
• CPC Class Codes: H04L 47/26 using explicit feedback to the source, e.g. choke packets
• CPC Class Codes: H04L 47/267 sent by the destination endpoint network streaming of media packets with control of the source by the destination H04L65/613
• CPC Class Codes: H04L 47/27 Evaluation or update of window size, e.g. using information derived from acknowledged [ACK] packets
• CPC Class Codes: H04L 47/35 by embedding flow control information in regular packets, e.g. piggybacking

Abstract

A method and system for managing the transfer of message packets between first and second nodes in a message queuing system utilizes a session acknowledgment protocol to coordinate the two-way flow of packet transmission. In a session initiation phase, each node specifies a session acknowledgment timeout period and a transmission window size for transmission of message packets thereto. During the session, the first node transmits multiple message packets up to the window size set by the second node and stops to wait for a session acknowledgment from the second computer. The session acknowledgment may piggyback on a message packet sent to the first node. A window-size field in the session acknowledgment allows the receiving node to dynamically adjust the incoming data flow.

Claims

1. A method of monitoring an operating state of computers in a message queuing system, comprising the steps of:

sending, at one time, a plurality of echo request messages to a plurality of respective computers in the message queuing system;

delivering asynchronously the echo request messages to the respective computers in the message queuing system;

generating, by one of the computers in the message queuing system, an echo response message after receiving a respective echo request message;

delivering the echo response message to a response queue;

providing an indicia on a video display for indicating an in-operation state of said one of the computers in the message queuing system.

2. A computer-readable medium having computer-executable instructions for performing the steps recited in claim 1.

3. A system for monitoring an operating state of computers in a message queuing system, comprising:

an originating application on a first computer for sending a plurality of echo request messages to a plurality of respective target computers in the message queuing system through asynchronous delivery;

a request queue on each of the plurality of target computers for receiving a respective echo request message;

a message queue (MQ) server on each of the plurality of target computers for generating an echo response message in response to a respective echo request message;

a response queue on the first computer for receiving echo response messages from the plurality of target computers in the message queuing system; and

an administration application on the first computer for reading an echo response message in the response queue from at least one of the plurality of target computers and providing an indicia for indicating that said at least one target computer is in operation.