6.19. Injection-Info The Injection-Info-header SHOULD be added to each article by the injecting agent in order to provide information as to how that article entered the Netnews system and to assist in tracing its true origin. header =/ Injection-Info-header Injection-Info-header = "Injection-Info" ":" SP Injection-Info-content *( ";" ( Injection-Info-parameter / extension-parameter ) ) Injection-Info-content = [CFWS] path-identity [CFWS] Injection-Info-parameter = posting-host-parameter / posting-account-parameter / posting-sender-parameter / posting-logging-parameter ; for {USENET}-parameters see 4.1 posting-host-parameter = <a parameter with attribute "posting-host" and value some host-value> host-value = dot-atom / [ dot-atom ":" ] ( IPv4address / IPv6address ); see [RFC 2373] posting-account-parameter = <a parameter with attribute "posting-account" and any value> posting-sender-parameter = <a parameter with attribute "sender" and value some sender-value> sender-value = mailbox / "verified" posting-logging-parameter = <a parameter with attribute "logging-data" and any value> An Injection-Info-header MUST NOT be added to an article except by an injecting agent. Any Injection-Info-header present when an article arrives at an injecting agent MUST be removed. In particular if, for some exceptional reason, an article is being reinjected (8.2.2), the Injection-Info-header will always relate to the latest injection (to the extent that this happens, the Injection-Info-header can be regarded as a variant header). The path-identity MUST be the same as the path-identity prepended to the Path-header by that same injecting agent which, following section 5.6.2, MUST therefore be a fully qualified domain name (FQDN) mailable address. Although comments and folding of white space are permitted throughout the Injection-Info-content specification, it is RECOMMENDED that folding is not used within any parameter (but only before or after the ";" separating those parameters), and that comments are only used following the last parameter. It is also RECOMMENDED that such parameters as are present are included in the order in which they have been defined in the syntax above. An injecting agent SHOULD use a consistent form of this header for all articles emanating from the same or similar origins. NOTE: The effect of those recommendations is to facilitate the recognition of articles arising from certain designated origins (as in the so-called "killfiles" which are available in some reading agents). Observe that the order within the syntax has been chosen to place last those parameters which are most likely to change between successive articles posted from the same origin. NOTE: To comply with the overall "attribute = value" syntax of parameters, any value containing an IPv6address, a date-time, a mailbox, or any CFWS MUST be quoted using <DQUOTE>s (the quoting is optional in other cases). NOTE: This header is intended to replace various currently-used but nowhere-documented headers such as "NNTP-Posting-Host" and "X-Trace". These headers are now deprecated, and any of them present when an article arrives at an injecting agent SHOULD also be removed as above.[< Prev] [TOC] [ Next >]
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