Web-site admissions control with denial-of-service trap for incomplete HTTP requests
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United States of America Patent
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N/A
Issued Date -
Aug 15, 2002
app pub date -
Feb 9, 2001
filing date -
Feb 9, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A web site includes a denial-of-service trap as part of its admission control module. The trap forwards client requests with incomplete headers to a request assembler, where they are queued. If a selected queue is full, the oldest request is bumped. A request remains in the queue until it is matched with an incoming packet (which would provide, extend, or possibly complete the header), or until a timeout occurs or until it is bumped. Complete requests are passed toward a request processor for normal processing. In the event of an HTTP-level denial-of-service attack, requests with deliberately incomplete headers do not encumber the request processor, so normal service can continue.
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