jiebi/CodeConvo huggingface dataset:
Argument syntax: <del> The "no-cache" response directive indicates that the response MUST NOT be used to satisfy any other request without forwarding it for validation and receiving a successful response; see validation.model. This allows an origin server to prevent a cache from using it to satisfy a request without contacting it, even by caches that have been configured to send stale responses. If the no-cache response directive specifies one or more field names, then a cache MAY use the response to satisfy a subsequent request, subject to any other restrictions on caching.  However, any header fields in the response that have the field name(s) listed MUST NOT be sent in the response to a subsequent request without successful revalidation with the origin server.  This allows an origin server to prevent the re-use of certain header fields in a response, while still allowing caching of the rest of the response. </del> <ins> The "no-cache" response directive, in its unqualified form (without an argument), indicates that the response MUST NOT be used to satisfy any other request without forwarding it for validation and receiving a successful response; see validation.model. This allows an origin server to prevent a cache from using the response to satisfy a request without contacting it, even by caches that have been configured to send stale responses. The qualified form of no-cache response directive, with an argument that lists one or more field names, indicates that a cache MAY use the response to satisfy a subsequent request, subject to any other restrictions on caching, if the listed header fields are excluded from the subsequent response or the subsequent response has been successfully revalidated with the origin server (updating or removing those fields).  This allows an origin server to prevent the re-use of certain header fields in a response, while still allowing caching of the rest of the response. </ins> The field names given are not limited to the set of header fields defined by this specification.  Field names are case-insensitive.
not to be needed for single-entry lists). Although it has been back-ported to many implementations, some <del> HTTP/1.0 caches will not recognize or obey this directive.  Also, no- cache response directives with field names are often handled by caches as if an unqualified no-cache directive was received; i.e., the special handling for the qualified form is not widely implemented. </del> <ins> HTTP/1.0 caches will not recognize or obey this directive.  Also, the qualified form of the directive is often handled by caches as if an unqualified no-cache directive was received; i.e., the special handling for the qualified form is not widely implemented. </ins> 5.2.2.4.
5.2.2.6. <del> The "public" response directive overrides certain conditions that would otherwise make a cache unable to store the response. Specifically, see caching.authenticated.responses regarding the use of public in response to a request containing </del> <ins> The "public" response directive indicates that a cache MAY store the response even if it would otherwise be prohibited, subject to the constraints of any other response directives present.  In other words, public explicitly marks the response as cacheable.  For example, public permits a shared cache to reuse a response to a request containing an Authorization header field (caching.authenticated.responses). </ins> <del> , and response.cacheability for how public affects responses that would normally not be stored, due to their status codes not being defined as heuristically cacheable; see heuristic.freshness. </del> <ins> If no explicit freshness information is provided, the response is is heuristically cacheable (heuristic.freshness). </ins> 5.2.2.7. Argument syntax: <del> The "private" response directive indicates that the response message is intended for a single user and MUST NOT be stored by a shared </del> <ins> The unqualified "private" response directive indicates that a shared cache MUST NOT store the response (i.e., the response is intended for a single user).  It also indicates that a private cache MAY store the response, subject to any other cache directives present, even if the response would not otherwise be heuristically cacheable by a private </ins> cache. <del> If the private response directive specifies one or more field names, this requirement is limited to the field values associated with the listed response header fields.  That is, a shared cache MUST NOT store the specified field names(s), whereas it MAY store the remainder of the response message. </del> <ins> If a qualified private response directive is present, with an argument that lists one or more field names, then only the listed fields are limited to a single user: a shared cache MUST NOT store the listed fields if they are present in the original response, but MAY store the remainder of the response message without those fields. </ins> The field names given are not limited to the set of header fields defined by this specification.  Field names are case-insensitive.
This usage of the word "private" only controls where the response can be stored; it cannot ensure the privacy of the message content. <del> Also, private response directives with field names are often handled by caches as if an unqualified private directive was received; i.e., the special handling for the qualified form is not widely implemented. </del> <ins> Also, the qualified form of the directive is often handled by caches as if an unqualified private directive was received; i.e., the special handling for the qualified form is not widely implemented. </ins> 5.2.2.8. <del> The "proxy-revalidate" response directive has the same meaning as the must-revalidate response directive, except that it does not apply to private caches. </del> <ins> The "proxy-revalidate" response directive indicates that once the response has become stale, a shared cache MUST NOT reuse that response to satisfy another request until it has been successfully validated by the origin, as defined by validation.model.  This is analogous to must-revalidate (cache-response-directive.must- revalidate), except that proxy-revalidate does not apply to private caches. Note that "proxy-revalidate" on its own does not imply that a response is cacheable.  For example, it might be combined with the public directive (cache-response-directive.public), allowing the response to be cached while requiring only a shared cache to revalidate when stale. </ins> 5.2.2.9.
Argument syntax: <del> The "s-maxage" response directive indicates that, in shared caches, </del> <ins> The "s-maxage" response directive indicates that, for a shared cache, </ins> the maximum age specified by this directive overrides the maximum age specified by either the max-age directive or the <del> header field.  The s-maxage directive also implies the semantics of the proxy-revalidate response directive. </del> <ins> header field. </ins> <del> The s-maxage directive also has the effect of allowing a stored response to be used to satisfy a request with an Authorization header field; see caching.authenticated.responses. </del> <ins> The s-maxage directive incorporates the proxy-revalidate (cache- response-directive.proxy-revalidate) response directive's semantics for a shared cache.  A shared cache MUST NOT reuse a stale response with s-maxage to satisfy another request until it has been successfully validated by the origin, as defined by validation.model. This directive also permits a shared cache to reuse a response to a request containing an Authorization header field, subject to the above requirements on maximum age and revalidation (caching.authenticated.responses). </ins> This directive uses the token form of the argument syntax: e.g., 's-maxage=10' not 's-maxage="10"'.  A sender MUST NOT generate the
8.1. <del> Please update the "Hypertext Transfer Protocol (HTTP) Field Registry" registry at <https://www.iana.org/assignments/http-fields> with the </del> <ins> Please update the "Hypertext Transfer Protocol (HTTP) Field Name Registry" at <https://www.iana.org/assignments/http-fields> with the </ins> field names listed in the two tables of header.field.definitions. 8.2.
environment, though of particular interest here is the set of unique characteristics that might be communicated via HTTP.  Fingerprinting is considered a privacy concern because it enables tracking of a user <del> agent's behavior over time without the corresponding controls that the user might have over other forms of data collection (e.g., cookies).  Many general-purpose user agents (i.e., Web browsers) have taken steps to reduce their fingerprints. </del> <ins> agent's behavior over time (Bujlow) without the corresponding controls that the user might have over other forms of data collection (e.g., cookies).  Many general-purpose user agents (i.e., Web browsers) have taken steps to reduce their fingerprints. </ins> There are a number of request header fields that might reveal information to servers that is sufficiently unique to enable
The "public" response directive indicates that a cache MAY store the response even if it would otherwise be prohibited, subject to the <del> constraints of any other response directives present.  In other words, public explicitly marks the response as cacheable.  For example, public permits a shared cache to reuse a response to a request containing an Authorization header field (caching.authenticated.responses). </del> <ins> constraints defined in response.cacheability.  In other words, public explicitly marks the response as cacheable.  For example, public permits a shared cache to reuse a response to a request containing an Authorization header field (caching.authenticated.responses). Note that it is not necessary to add the public directive to a response that is already cacheable according to response.cacheability. </ins> <del> If no explicit freshness information is provided, the response is is heuristically cacheable (heuristic.freshness). </del> <ins> If no explicit freshness information is provided on a response with the public directive, it is heuristically cacheable (heuristic.freshness). </ins> 5.2.2.7.
The unqualified "private" response directive indicates that a shared cache MUST NOT store the response (i.e., the response is intended for a single user).  It also indicates that a private cache MAY store the <del> response, subject to any other cache directives present, even if the response would not otherwise be heuristically cacheable by a private cache. </del> <ins> response, subject the constraints defined in response.cacheability, even if the response would not otherwise be heuristically cacheable by a private cache. </ins> If a qualified private response directive is present, with an argument that lists one or more field names, then only the listed fields are limited to a single user: a shared cache MUST NOT store the listed fields if they are present in the original response, but <del> MAY store the remainder of the response message without those fields. </del> <ins> MAY store the remainder of the response message without those fields, subject the constraints defined in response.cacheability. </ins> The field names given are not limited to the set of header fields defined by this specification.  Field names are case-insensitive.
3.1. <del> A response message is considered complete when all of the octets indicated by its framing are available.  Note that, when no explicit framing is provided, a response message that is ended by the connection's close is considered complete even though it might be indistinguishable from an incomplete response (see Messaging).  A cache SHOULD consider a close-terminated response incomplete if the connection termination is detected to be an error.  A server that wishes to avoid premature termination resulting in an incorrect cached response SHOULD send the response with explicit framing. </del> If the request method is GET, the response status code is , and the entire response header section has been received, a cache <del> MAY store an incomplete response message body if the stored response is recorded as incomplete.  Likewise, a </del> <ins> MAY store a response body that is not complete (operation) if the stored response is recorded as being incomplete.  Likewise, a </ins> response MAY be stored as if it were an incomplete
Because unsafe request methods (safe.methods) such as PUT, POST or DELETE have the potential for changing state on the origin server, <del> intervening caches can use them to keep their contents up to date. </del> <ins> intervening caches are required to invalidate stored responses to keep their contents up to date. means that the cache will either remove all stored responses whose target URI matches the given URI, or will mark them as "invalid" and in need of a mandatory validation before they can be sent in response to a subsequent request. Note that this does not guarantee that all appropriate responses are invalidated globally; a state-changing request would only invalidate responses in the caches that it travels through. </ins> <del> A cache MUST invalidate the effective Request URI (effective.request.uri) as well as the URI(s) in the </del> <ins> A cache MUST invalidate the target URI (target.resource) as well as the URI(s) in the </ins> and
or response header field if the host part of that URI differs from the <del> host part in the effective request URI (effective.request.uri).  This helps prevent denial-of-service attacks. </del> <ins> host part in the target URI (target.resource).  This helps prevent denial-of-service attacks. </ins> <del> A cache MUST invalidate the effective request URI (effective.request.uri) when it receives a non-error response to a request with a method whose safety is unknown. </del> <ins> A cache MUST invalidate the target URI (target.resource) when it receives a non-error response to a request with a method whose safety is unknown. </ins> Here, a "non-error response" is one with a or <del> status code.  "Invalidate" means that the cache will either remove all stored responses related to the effective request URI or will mark these as "invalid" and in need of a mandatory validation before they can be sent in response to a subsequent request. Note that this does not guarantee that all appropriate responses are invalidated.  For example, a state-changing request might invalidate responses in the caches it travels through, but relevant responses still might be stored in other caches that it has not. </del> <ins> status code. </ins> 5.
The CONNECT method requests that the recipient establish a tunnel to the destination origin server identified by the request-target and, if successful, thereafter restrict its behavior to blind forwarding <del> of packets, in both directions, until the tunnel is closed.  Tunnels are commonly used to create an end-to-end virtual connection, through one or more proxies, which can then be secured using TLS (Transport Layer Security, RFC8446). </del> <ins> of data, in both directions, until the tunnel is closed.  Tunnels are commonly used to create an end-to-end virtual connection, through one or more proxies, which can then be secured using TLS (Transport Layer Security, RFC8446). </ins> CONNECT is intended only for use in requests to a proxy.  An origin server that receives a CONNECT request for itself MAY respond with a
request. An origin server that receives an If-Match header field MUST evaluate <del> the condition prior to performing the method (evaluation).  If the field value is "*", the condition is false if the origin server does not have a current representation for the target resource.  If the field value is a list of entity-tags, the condition is false if none of the listed tags match the entity-tag of the selected representation. </del> <ins> the condition prior to performing the method (evaluation). To evaluate a received If-Match header field: </ins> An origin server MUST NOT perform the requested method if a received If-Match condition evaluates to false; instead, the origin server
An origin server that receives an If-None-Match header field MUST evaluate the condition prior to performing the method (evaluation). <del> If the field value is "*", the condition is false if the origin server has a current representation for the target resource.  If the field value is a list of entity-tags, the condition is false if one of the listed tags match the entity-tag of the selected representation. </del> <ins> To evaluate a received If-None-Match header field: </ins> An origin server MUST NOT perform the requested method if the condition evaluates to false; instead, the origin server MUST respond
status code is similar to , but it indicates that the client needs to authenticate itself in <del> order to use a proxy.  The proxy MUST send a </del> <ins> order to use a proxy for this request.  The proxy MUST send a </ins> header field (field.proxy-authenticate) containing a challenge <del> applicable to that proxy for the target resource.  The client MAY repeat the request with a new or replaced </del> <ins> applicable to that proxy for the request.  The client MAY repeat the request with a new or replaced </ins> header field (field.proxy-authorization).
components of the URI reference RFC3986, if any, when generating the Referer field value. <ins> The field value is either an or a . In the latter case (uri), the referenced URI is relative to the target URI (RFC3986). </ins> The Referer header field allows servers to generate back-links to other resources for simple analytics, logging, optimized caching, etc.  It also allows obsolete or mistyped links to be found for
the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR. <ins> A sender MUST NOT generate a bare CR (a CR character not immediately followed by LF) within any protocol elements other than the payload body.  A recipient of such a bare CR MUST consider that element to be invalid or replace each bare CR with SP before processing the element or forwarding the message. </ins> Older HTTP/1.0 user agent implementations might send an extra CRLF after a POST request as a workaround for some early server applications that failed to read message body content that was not
that implementations advertising only HTTP/1.0 support will not understand how to process a transfer-encoded payload.  A client MUST NOT send a request containing Transfer-Encoding unless it knows the <del> server will handle HTTP/1.1 (or later) requests; such knowledge might be in the form of specific user configuration or by remembering the version of a prior received response.  A server MUST NOT send a response containing Transfer-Encoding unless the corresponding request indicates HTTP/1.1 (or later). </del> <ins> server will handle HTTP/1.1 requests (or later minor revisions); such knowledge might be in the form of specific user configuration or by remembering the version of a prior received response.  A server MUST NOT send a response containing Transfer-Encoding unless the corresponding request indicates HTTP/1.1 (or later minor revisions). </ins> A server that receives a request message with a transfer coding it does not understand SHOULD respond with
9.1. The "Connection" header field allows the sender to list desired <del> control options for the current connection.  In order to avoid confusing downstream recipients, a proxy or gateway MUST remove or replace any received connection options before forwarding the message. </del> <ins> control options for the current connection. </ins> When a field aside from Connection is used to supply control information for or about the current connection, the sender MUST list <del> the corresponding field name within the Connection header field.  A proxy or gateway MUST parse a received Connection header field before a message is forwarded and, for each connection-option in this field, </del> <ins> the corresponding field name within the Connection header field. Intermediaries MUST parse a received Connection header field before a message is forwarded and, for each connection-option in this field, </ins> remove any header or trailer field(s) from the message with the same name as the connection-option, and then remove the Connection header field itself (or replace it with the intermediary's own connection
account when creating a new HTTP field. The "Hypertext Transfer Protocol (HTTP) Field Name Registry" is <del> located at "https://www.iana.org/assignments/http-fields/". </del> <ins> located at <https://www.iana.org/assignments/http-fields/>. </ins> Registration requests can be made by following the instructions located there or by sending an email to the "ietf-http-wg@ietf.org" mailing list. Field names are registered on the advice of a Designated Expert (appointed by the IESG or their delegate).  Fields with the status <del> 'permanent' are Specification Required (using terminology from RFC8126). </del> <ins> 'permanent' are Specification Required (RFC8126). </ins> Registration requests consist of at least the following information: <ins> And, optionally: </ins> The Expert(s) can define additional fields to be collected in the registry, in consultation with the community.
limit their values to US-ASCII octets.  A recipient SHOULD treat other octets in field content (obs-text) as opaque data. <ins> Field values containing control ( ) characters such as CR or LF are invalid; recipients MUST either reject a field value containing control characters, or convert them to SP before processing or forwarding the message. </ins> Leading and trailing whitespace in raw field values is removed upon field parsing (field.parsing).  Field definitions where leading or trailing whitespace in values is significant will have to use a
transfers to only those changed during the specified window. An origin server that receives an If-Modified-Since header field <del> SHOULD evaluate the condition prior to performing the method (evaluation).  The origin server SHOULD NOT perform the requested </del> <ins> SHOULD evaluate the condition as per evaluation prior to performing the method.  The origin server SHOULD NOT perform the requested </ins> method if the selected representation's last modification date is earlier than or equal to the date provided in the field value; instead, the origin server SHOULD generate a
replaced by local equivalents without affecting the protocol. Responses with status codes that are defined as heuristically <del> cacheable (e.g., 200, 203, 204, 206, 300, 301, 404, 405, 410, 414, and 501 in this specification) can be reused by a cache with </del> <ins> cacheable (e.g., 200, 203, 204, 206, 300, 301, 308, 404, 405, 410, 414, and 501 in this specification) can be reused by a cache with </ins> heuristic expiration unless otherwise indicated by the method definition or explicit cache controls Caching; all other status codes are not heuristically cacheable.
If one or more encodings have been applied to a representation, the sender that applied the encodings MUST generate a Content-Encoding header field that lists the content codings in the order in which <del> they were applied.  Additional information about the encoding parameters can be provided by other header fields not defined by this specification. </del> <ins> they were applied.  Note that the coding named "identity" is reserved for its special role in , and thus SHOULD NOT be included. Additional information about the encoding parameters can be provided by other header fields not defined by this specification. </ins> Unlike Transfer-Encoding (field.transfer-encoding), the codings listed in Content-Encoding are a characteristic of the