US 8,478,813 B2 · Transparent migration of endpoint

Abstract

Architecture that facilitates the capture of connection state of a connection established between a client and an intermediate server and forwards the state to one or more target servers. A software component at the target server (as well as the intermediate server) uses this connection state to reply back to the client directly, thereby bypassing the intermediate server. All packets from the client related to the request are received at the intermediate server and then forwarded to the target server. The migration can be accomplished without any change in the client operating system and client applications, without assistance from a gateway device such as a load balancer or the network, without duplication of all packets between the multiple servers, and without changes to the transport layer stack of the intermediate and target servers.

Claims19

Dependent claims

A computer-implemented system having computer readable media that store executable instructions executed by a processor, comprising:

a migration component for each of an intermediate endpoint and a target endpoint, the migration component includes a migration hand-off library that forwards a request to the target endpoint, a migration driver that resides at a transport layer, and a migration controller that handles control packet traffic,
the migration component of the intermediate endpoint captures connection state of an active client connection established between a client and the intermediate endpoint, the connection established based on the client request received at the intermediate endpoint and the target endpoint chosen by the intermediate endpoint;
the migration component of the target endpoint creates a response to the request and sends the response directly to the client instead of the intermediate device based on the connection state, thereby bypassing the intermediate device;
and
a microprocessor that executes computer-executable instructions associated with at least one of the migration components.

2 more elements

Dependencies are inferred from the claim text.

Transparent migration of endpoint

Life of this patent

Transparent migration of endpoint

Life of this patent

Abstract

Claims19