Update library/protocol/CONNEG/README.md
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jvelilla
@@ -13,114 +13,113 @@ The class CONNEG_SERVER_SIDE contains several features that helps to write diffe
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charset and compression).
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charset and compression).
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So for each of the following questions, you will have a corresponding method to help in the solution.
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So for each of the following questions, you will have a corresponding method to help in the solution.
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How to implement Media type negotiation?
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- How to implement Media type negotiation?
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Hint: Use CONNEG_SERVER_SIDE.media_type_preference
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Hint: Use CONNEG_SERVER_SIDE.media_type_preference
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How to implement Language Negotiation?
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- How to implement Language Negotiation?
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Hint: Use CONNEG_SERVER_SIDE.language_preference
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Hint: Use CONNEG_SERVER_SIDE.language_preference
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- How to implement Character encoding Negotiation?
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Hint: Use CONNEG_SERVER_SIDE.charset_preference
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How to implement Character encoding Negotiation?
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- How to implement Compression Negotiation?
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Hint: Use CONNEG_SERVER_SIDE.charset_preference
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Hint: Use CONNEG_SERVER_SIDE.encoding_preference
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How to implement Compression Negotiation?
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Hint: Use CONNEG_SERVER_SIDE.encoding_preference
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There is also a test case where you can check how to use this class.
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There is also a test case where you can check how to use this class.
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note
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note
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description: "Summary description for CONNEG_SERVER_SIDE. Utility class to support Server Side Content Negotiation "
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description: "Summary description for CONNEG_SERVER_SIDE. Utility class to support Server Side Content Negotiation "
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author: ""
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author: ""
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date: "$Date$"
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date: "$Date$"
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revision: "$Revision$"
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revision: "$Revision$"
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description: "[
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description: "[
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Reference : http://www.w3.org/Protocols/rfc2616/rfc2616-sec12.html#sec12.1
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Reference : http://www.w3.org/Protocols/rfc2616/rfc2616-sec12.html#sec12.1
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Server-driven Negotiation : If the selection of the best representation for a response is made by an algorithm located at the server,
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Server-driven Negotiation : If the selection of the best representation for a response is made by an algorithm located at the server,
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it is called server-driven negotiation. Selection is based on the available representations of the response (the dimensions over which it can vary; e.g. language, content-coding, etc.)
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it is called server-driven negotiation. Selection is based on the available representations of the response (the dimensions over which it can vary; e.g. language, content-coding, etc.)
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and the contents of particular header fields in the request message or on other information pertaining to the request (such as the network address of the client).
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and the contents of particular header fields in the request message or on other information pertaining to the request (such as the network address of the client).
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Server-driven negotiation is advantageous when the algorithm for selecting from among the available representations is difficult to describe to the user agent,
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Server-driven negotiation is advantageous when the algorithm for selecting from among the available representations is difficult to describe to the user agent,
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or when the server desires to send its "best guess" to the client along with the first response (hoping to avoid the round-trip delay of a subsequent request if the "best guess" is good enough for the user).
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or when the server desires to send its "best guess" to the client along with the first response (hoping to avoid the round-trip delay of a subsequent request if the "best guess" is good enough for the user).
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In order to improve the server's guess, the user agent MAY include request header fields (Accept, Accept-Language, Accept-Encoding, etc.) which describe its preferences for such a response.
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In order to improve the server's guess, the user agent MAY include request header fields (Accept, Accept-Language, Accept-Encoding, etc.) which describe its preferences for such a response.
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]"
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]"
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class interface
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class interface
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CONNEG_SERVER_SIDE
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CONNEG_SERVER_SIDE
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create
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create
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make
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make
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feature -- Initialization
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feature -- Initialization
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make (a_mime: STRING_8; a_language: STRING_8; a_charset: STRING_8; an_encoding: STRING_8)
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make (a_mime: STRING_8; a_language: STRING_8; a_charset: STRING_8; an_encoding: STRING_8)
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feature -- Compression Negotiation
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feature -- Compression Negotiation
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encoding_preference (server_encoding_supported: LIST [STRING_8]; header: STRING_8): COMPRESSION_VARIANT_RESULTS
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encoding_preference (server_encoding_supported: LIST [STRING_8]; header: STRING_8): COMPRESSION_VARIANT_RESULTS
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-- server_encoding_supported represent a list of encoding supported by the server.
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-- server_encoding_supported represent a list of encoding supported by the server.
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-- header represent the Accept-Encoding header, ie, the client preferences.
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-- header represent the Accept-Encoding header, ie, the client preferences.
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-- Return which Encoding to use in a response, if the server support
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-- Return which Encoding to use in a response, if the server support
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-- one Encoding, or empty in other case.
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-- one Encoding, or empty in other case.
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-- Representation: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.3
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-- Representation: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.3
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feature -- Encoding Negotiation
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feature -- Encoding Negotiation
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charset_preference (server_charset_supported: LIST [STRING_8]; header: STRING_8): CHARACTER_ENCODING_VARIANT_RESULTS
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charset_preference (server_charset_supported: LIST [STRING_8]; header: STRING_8): CHARACTER_ENCODING_VARIANT_RESULTS
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-- server_charset_supported represent a list of charset supported by the server.
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-- server_charset_supported represent a list of charset supported by the server.
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-- header represent the Accept-Charset header, ie, the client preferences.
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-- header represent the Accept-Charset header, ie, the client preferences.
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-- Return which Charset to use in a response, if the server support
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-- Return which Charset to use in a response, if the server support
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-- one Charset, or empty in other case.
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-- one Charset, or empty in other case.
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-- Reference: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.2
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-- Reference: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.2
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feature -- Language Negotiation
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feature -- Language Negotiation
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language_preference (server_language_supported: LIST [STRING_8]; header: STRING_8): LANGUAGE_VARIANT_RESULTS
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language_preference (server_language_supported: LIST [STRING_8]; header: STRING_8): LANGUAGE_VARIANT_RESULTS
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-- server_language_supported represent a list of languages supported by the server.
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-- server_language_supported represent a list of languages supported by the server.
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-- header represent the Accept-Language header, ie, the client preferences.
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-- header represent the Accept-Language header, ie, the client preferences.
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-- Return which Language to use in a response, if the server support
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-- Return which Language to use in a response, if the server support
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-- one Language, or empty in other case.
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-- one Language, or empty in other case.
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-- Reference: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.4
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-- Reference: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.4
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feature -- Media Type Negotiation
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feature -- Media Type Negotiation
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media_type_preference (mime_types_supported: LIST [STRING_8]; header: STRING_8): MEDIA_TYPE_VARIANT_RESULTS
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media_type_preference (mime_types_supported: LIST [STRING_8]; header: STRING_8): MEDIA_TYPE_VARIANT_RESULTS
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-- mime_types_supported represent media types supported by the server.
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-- mime_types_supported represent media types supported by the server.
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-- header represent the Accept header, ie, the client preferences.
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-- header represent the Accept header, ie, the client preferences.
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-- Return which media type to use for representaion in a response, if the server support
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-- Return which media type to use for representaion in a response, if the server support
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-- one media type, or empty in other case.
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-- one media type, or empty in other case.
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-- Reference : http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1
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-- Reference : http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1
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feature -- Server Side Defaults Formats
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feature -- Server Side Defaults Formats
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charset_default: STRING_8
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charset_default: STRING_8
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encoding_default: STRING_8
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encoding_default: STRING_8
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language_default: STRING_8
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language_default: STRING_8
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mime_default: STRING_8
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mime_default: STRING_8
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set_charset_default (a_charset: STRING_8)
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set_charset_default (a_charset: STRING_8)
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-- set the charset_default with `a_charset'
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-- set the charset_default with `a_charset'
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ensure
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ensure
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set_charset: a_charset ~ charset_default
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set_charset: a_charset ~ charset_default
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set_encoding_defautl (an_encoding: STRING_8)
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set_encoding_defautl (an_encoding: STRING_8)
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ensure
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ensure
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set_encoding: an_encoding ~ encoding_default
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set_encoding: an_encoding ~ encoding_default
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set_language_default (a_language: STRING_8)
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set_language_default (a_language: STRING_8)
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-- set the language_default with `a_language'
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-- set the language_default with `a_language'
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ensure
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ensure
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set_language: a_language ~ language_default
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set_language: a_language ~ language_default
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set_mime_default (a_mime: STRING_8)
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set_mime_default (a_mime: STRING_8)
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-- set the mime_default with `a_mime'
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-- set the mime_default with `a_mime'
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ensure
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ensure
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set_mime_default: a_mime ~ mime_default
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set_mime_default: a_mime ~ mime_default
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note
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note
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copyright: "2011-2011, Javier Velilla, Jocelyn Fiat and others"
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copyright: "2011-2011, Javier Velilla, Jocelyn Fiat and others"
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license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
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license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
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end -- class CONNEG_SERVER_SIDE
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end -- class CONNEG_SERVER_SIDE
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