Changeset 879 for draft-ietf-httpbis/latest/p4-conditional.html
- Timestamp:
- 23/07/10 09:19:25 (12 years ago)
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draft-ietf-httpbis/latest/p4-conditional.html
r878 r879 638 638 </pre><p id="rfc.section.2.p.3">A "strong entity-tag" <em class="bcp14">MAY</em> be shared by two representations of a resource only if they are equivalent by octet equality. 639 639 </p> 640 <p id="rfc.section.2.p.4">A "weak entity-tag ,"indicated by the "W/" prefix, <em class="bcp14">MAY</em> be shared by two representations of a resource only if the representations are equivalent and could be substituted for each640 <p id="rfc.section.2.p.4">A "weak entity-tag", indicated by the "W/" prefix, <em class="bcp14">MAY</em> be shared by two representations of a resource only if the representations are equivalent and could be substituted for each 641 641 other with no significant change in semantics. A weak entity-tag can only be used for weak comparison. 642 642 </p> … … 711 711 one normally would expect that if the representation (including both representation header fields and representation body) 712 712 changes in any way, then the associated validator would change as well. If this is true, then we call this validator a "strong 713 validator ."713 validator". 714 714 </p> 715 715 <p id="rfc.section.4.p.2">However, there might be cases when a server prefers to change the validator only on semantically significant changes, and 716 716 not when insignificant aspects of the representation change. A validator that does not always change when the representation 717 changes is a "weak validator ."718 </p> 719 <p id="rfc.section.4.p.3">An entity-tag is normally a strong validator, but the protocol provides a mechanism to tag an entity-tag as "weak ."One can717 changes is a "weak validator". 718 </p> 719 <p id="rfc.section.4.p.3">An entity-tag is normally a strong validator, but the protocol provides a mechanism to tag an entity-tag as "weak". One can 720 720 think of a strong validator as one that changes whenever the sequence of bits in a representation changes, while a weak value 721 721 changes whenever the meaning of a representation changes. Alternatively, one can think of a strong validator as part of an
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