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The Tangled Web
book

The Tangled Web

by Michal Zalewski
November 2011
Intermediate to advanced
320 pages
10h 18m
English
No Starch Press
Content preview from The Tangled Web

Chunked Data Transfers

The significant limitation of Content-Length-based keepalive sessions is the need for the server to know in advance the exact size of the returned response. This is a pretty simple task when dealing with static files, as the information is already available in the filesystem. When serving dynamically generated data, the problem is more complicated, as the output must be cached in its entirety before it is sent to the client. The challenge becomes insurmountable if the payload is very large or is produced gradually (think live video streaming). In these cases, precaching to compute payload size is simply out of the question.

In response to this challenge, RFC 2616 section 3.6.1 gives servers the ability to use Transfer-Encoding: ...

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Publisher Resources

ISBN: 9781593273880Errata Page