Method and system for layering an infinite request/reply data stream on finite, unidirectional, time-limited transports
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United States of America Patent
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Mar 23, 2010
Grant Date -
Dec 4, 2003
app pub date -
May 30, 2002
filing date -
May 30, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An improved method and system for layering RPC communications on top of an HTTP transport. An RPC data stream of individual request/reply packets is mapped to HTTP primitives, and RPC requests are mapped to one large, HTTP, POST-like request (IN channel). Corresponding replies are mapped to another large, HTTP, GET-like request (OUT channel). The client establishes the IN channel and OUT channel as simultaneously open connections with a large content-length for each. Before the content-length is exhausted, the client and server open a new IN or OUT channel while the corresponding channel is still alive, so that there is always at least one opened IN or OUT channel available. If traffic is too infrequent, the client keeps the connection alive so that it will not be closed for being idle. This provides a bi-directional virtual connection that remains open for an unlimited time for tunneling unlimited amounts of RPC traffic.
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