Download Content Networking : Architecture, Protocols, and Practice by Markus Hofmann PDF

By Markus Hofmann

Because the net has grown, so have the demanding situations linked to supplying static, streaming, and dynamic content material to end-users. This ebook is exclusive in that it addresses the subject of content material networking solely and comprehensively, tracing the evolution from conventional net caching to present day open and tremendously extra versatile structure. With this evolutionary process, the authors emphasize the field's such a lot continual techniques, ideas, and mechanisms--the center info to help you comprehend why and the way content material supply works this day, and observe that wisdom within the future.

  • Focuses at the ideas that may offer you a deep and well timed realizing of content material networking.
  • Offers dozens of protocol-specific examples displaying how real-life content material Networks are presently designed and implemented.
  • Provides wide attention of content material providers, together with either the web content material edition Protocol (ICAP) and Open Pluggable side prone (OPES).
  • Examines equipment for assisting time-constrained media similar to streaming audio and video and real-time media equivalent to quick messages.
  • Combines the imaginative and prescient and rigor of a favourite researcher with the sensible event of a pro improvement engineer to supply a distinct blend of theoretical intensity and sensible application.

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Extra resources for Content Networking : Architecture, Protocols, and Practice (The Morgan Kaufmann Series in Networking)

Example text

Protocol layering is an effective design principle, which simplifies development of complex communication systems. In theory, protocol designers have to deal with only two interfaces—one to the protocol layer above, and one to the protocol layer below. If the layering principle is strictly followed, however, certain optimization opportunities can be lost. In practice, popular protocols have been designed making some implicit assumptions about other layers in the protocol stack. Most of these assumptions have not been written down explicitly, but become apparent with recent changes in technology.

The request line is terminated by a carriage return/line feed and followed by optional header lines. 3 HTTP request message. 2 Hypertext Transport Protocol—HTTP 35 header line begins with a header field name, which is separated by a colon from one or more attributes. , the type of Web browser), as well as, the preferred language of the client. , an additional CR/LF) and followed by an optional message body. In our example, the message body is empty, which is not necessarily the case for all HTTP request messages.

3 shows an HTTP message carrying a GET request. POST Method While the GET method is used for information retrieval, the POST method is used to submit information to a Web server. Use cases include posting to a bulletin board, the submission of a user form, addition of database entries, or providing input parameters for a server-side software program. The information to be submitted is included in the message body of a POST request. The actual function performed by the POST method usually depends on the Request-URI.

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