Method and system for message transfer session management

A computer-readable medium having computer-executable instructions for performing steps for transferring messages in a session between first and second nodes in a message queuing system, comprising:

• specifying by the first node to the second node a first acknowledgment timeout period for the second node to acknowledge receipt of packets sent by the first node and a first window size for message transfer from the second node to the first node;
• returning by the second node to the first node a second acknowledgment timeout period for the first node to acknowledge receipt of packets sent by the second node and a second window size for message transfer from the first node to the second node;
• transmitting from the first node to the second node multiple message packets up to the second window size;
• sending a session acknowledgment from the second node to the first node indicating whether the multiple message packets from the first node are received by the second node;
• wherein the session acknowledgment includes a window size field for specifying a new window size for message transfer to the second node to dynamically adjust a maximum number of message packets allowed to be transferred to the second node based on resources available to the second node.

A method of communication between a first node and a second node in a message queuing system during a message transfer session between the first node and second node, comprising the steps of:

• initiating a message transfer session by sending an establish-connection packet from the first node to the second node;
• responding by the second node to the establish-connection packet from the first node by returning response packet to the first node indicating an agreement to establish a session;
• sending, by the first node after receiving the response packet, to the second node a first communication parameter packet which includes a first receipt acknowledgment timeout period for the second node to acknowledge receipt of packets transmitted from the first node, and a first window size for packets transmitted from the second node;
• returning by the second node to the first node a second communication parameter packet which includes a second receipt acknowledgment timeout period for the first node to acknowledge receipt of packets transmitted from the second node, and a second window size for packets transmitted from the first node to the second node;
• transmitting from the first node to the second node message packets up to the second window size;
• and
• acknowledging by the second node receipt of the message packets by sending a session acknowledgment which includes a sync acknowledgment field containing data representing a number of packets received in the transmission;
• wherein the session acknowledgment includes a window size field which permits the second node to specify a new window size for message packet transmission to the second node to dynamically adjust a maximum number of message packets allowed to be transferred to the second node based on resources available to the second node.