SOCKET STATE TRANSFER

摘要

In response to receiving TCP inbound message packets from remote node, a network node buffers the received TCP message packets in a receive queue. The network node forwards the inbound message packets to an application node. Socket states, excluding receive-queue contents, are sent to a backup node. In response to receiving acknowledgements corresponding to respective inbound message packets from the application node, the network node sends respective acknowledgements from the network node to the remote node.

主权项

1. A system comprising non-transitory storage media encoded with code that, when executed by a first processor:
in response to receiving inbound message packets via a connection with a remote node, buffers the received inbound message packets in a receive queue of a migration-source network node; forwards the inbound message packets from the migration-source network node to an application node, and transfers to a backup node socket states, the socket states excluding inbound message packets buffered in the receive queue; and in response to receiving from the application node acknowledgements corresponding to respective inbound message packets, sending respective acknowledgements from the migration-source network node to the remote node.