RFC 2068:Hypertext Transfer Protocol -- HTTP/1.1
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service


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... A network data object or service that can be identified by a URI, as defined in section 3.2. Resources may be available in multiple ...
... An application program that accepts connections in order to service requests by sending back responses. Any given program may be capable of being both a client and a server; our use of these ...


... binary data over a 7-bit transport service. However, safe transport has a different focus for an 8bit ...


... proxy. The proxy is requested to forward the request or service it from a valid ...


... | "502" ; Bad Gateway | "503" ; Service Unavailable | "504" ; Gateway ...


... links to that resource be removed. Such an event is common for limited-time, promotional services and for resources belonging to individuals no longer working at the server's site. It is not necessary to mark all permanently unavailable ...
... The server is refusing to service the request because the Request-URI is longer than the server is willing to interpret. This rare ...
... The server is refusing to service the request because the entity of the request is in a format not supported by the requested resource ...
... Service Unavailable ...


... opaque string which can only be compared for equality with other realms on that server. The server will service the request only if it can validate the user-ID and password ...


... The principle behind entity tags is that only the service author knows the semantics of a resource well enough to select an ...
... may be because absolute semantic transparency is deemed necessary by the service author, or because of security or privacy considerations. ...
... o POST In order to prevent denial of service attacks, an invalidation based on the URI in a Location or Content-Location ...
... Note: if history list mechanisms unnecessarily prevent users from viewing stale resources, this will tend to force service authors to avoid using HTTP expiration controls and cache ...
... HTTP expiration controls and cache controls when they would otherwise like to. Service authors may consider it important that users not be presented with error messages or warning messages ...
... to cached, or ought to expire quickly, user interface considerations may force service authors to resort to other means of preventing caching (e.g. "once-only" URLs) in order not to ...


... The purpose of this directive is to meet the stated requirements of certain users and service authors who are concerned about accidental releases of information via unanticipated accesses to cache data structures ...
... authenticated once by that user), while still requiring proxies that service many users to revalidate each time (in order to make sure that each user has been authenticated). Note that such authenticated ...
... port information implies the default port for the service requested (e.g., "80" for an HTTP URL). For ...
... host address for the service being requested). If the Host field is not already present, an HTTP/1.1 ...
... The Retry-After response-header field can be used with a 503 (Service Unavailable) response to indicate how long the service ...
... Service Unavailable) response to indicate how long the service is expected to be unavailable to the requesting client ...


... MITM attack would be to offer a "free" proxy caching service to gullible users. ...
... header fields generated by the server, that such sending could improve the quality of service. Elaborate user-customized accept header fields ...
... Clients using HTTP rely heavily on the Domain Name Service, and are thus generally prone to security attacks based on the deliberate ...



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