Method for redelivering a subset of messages in a packet to a receiver application

摘要

A process, a computer program product, and a computer system for redelivering a subset of messages in a packet to a receiver application are provided. The present invention enables the partially received packet to be delivered to the application layer (LLM) and allow LLM to decide whether it has to request for full packet retransmission or partial retransmission of the packet. The present invention allows the LLM of the receiver to generate a PNACK (partial negative-acknowledgement) based on the subset of the messages consumed from within the partial packet. The present invention allows the LLM of the transmitter to process the PNACK, to regenerate a new packet from the original packet to contain only a subset of the messages, and to send this new packet to the receiver who has generated the PNACK.

主权项

1. A method for redelivering a subset of messages in a packet to a receiver application, the method comprising:
determining, by a low latency messaging (LLM) application of a receiver in a network, whether at least one complete message is included in a partial packet received from a transmitter in the network, wherein the partial packet is a subset of the packet; generating, by the LLM application, a partial negative acknowledgement (PNACK), the PNACK including offset information for missing messages in the partial packet, in response to determining that the at least one complete message is included in the partial packet; reconstructing, by the transmitter, a new packet that includes the missing messages, in response to receiving the PNACK form the receiver; in response to determining that the PNACK is received from multiple receivers in the network, sending, by the transmitter, the new packet to the multiple receivers by using multicast; and in response to determining that the PNACK is not received from multiple receivers in the network, sending, by the transmitter, the new packet to the receiver by using unicast.