Internet Engineering Task Force (IETF)J. Snell
Request for Comments: 7240June 2014
Category: Standards Track
ISSN: 2070-1721

mature free dating sites Prefer Header for HTTP

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top 10 free online dating sites canada This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741.100 free asian online dating sites

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totally free online dating sites australia Similarly, servers that process requests are often faced with decisions about how to process requests that may be technically invalid or incorrect but are still understandable. It might be the case that the server is able to overlook the technical errors in the request but still successfully process the request. Depending on the specific requirements of the application and the nature of the request being made, the client might or might not consider such lenient processing of its request to be appropriate.100 free online dating sites canada

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  1. The semantics of the Expect header field are such that intermediaries and servers are required to reject any request that states unrecognized or unsupported expectations.
  2. While the Expect header field is end to end, the HTTP specification requires that the header be processed hop by hop. That is, every interceding intermediary that handles a request between the client and the origin server is required to process an expectation and determine whether it is capable of appropriately handling it.

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live chat script for website This specification uses the Augmented Backus-Naur Form (ABNF) notation of [RFC5234] and includes, by reference, the "token", "word", "OWS", and "BWS" rules and the #rule extension as defined within Sections 3.2.1 and 3.2.4 of [RFC7230]; as well as the "delta-seconds" rule defined in Section 8.1.3 of [RFC7231].open source live chat software reviews

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live chat script for your website The Prefer request header field is used to indicate that particular server behaviors are preferred by the client but are not required for successful completion of the request. Prefer is similar in nature to the Expect header field defined by Section 6.1.2 of [RFC7231] with the exception that servers are allowed to ignore stated preferences.chat doctor online free

live chat script for website free ABNF:

 
  Prefer     = "Prefer" ":" 1#preference
  preference = token [ BWS "=" BWS word ] 
               *( OWS ";" [ OWS parameter ] )
  parameter  = token [ BWS "=" BWS word ]
      

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  Prefer: foo; bar
  Prefer: foo; bar=""
  Prefer: foo=""; bar
      

free online dating site without credit card in usa An optional set of parameters can be specified for any preference token. The meaning and application of such parameters is dependent on the definition of each preference token and the server's implementation thereof. There is no significance given to the ordering of parameters on any given preference.smokehead islay single malt scotch whisky review

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best online dating sites in us In various situations, a proxy might determine that it is capable of honoring a preference independently of the server to which the request has been directed. For instance, an intervening proxy might be capable of providing asynchronous handling of a request using 202 (Accepted) responses independently of the origin server. Such proxies can choose to honor the "respond-async" preference on their own regardless of whether or not the origin is capable or willing to do so.100 free asian dating sites uk

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best online dating site in usa A client MAY use multiple instances of the Prefer header field in a single message, or it MAY use a single Prefer header field with multiple comma-separated preference tokens. If multiple Prefer header fields are used, it is equivalent to a single Prefer header field with the comma-separated concatenation of all of the tokens. For example, the following are equivalent:best free dating sites in canada

best online dating sites in usa 2014 Multiple Prefer header fields defining three distinct preference tokens:

POST /foo HTTP/1.1
Host: example.org
Prefer: respond-async, wait=100
Prefer: handling=lenient
Date: Tue, 20 Dec 2011 12:34:56 GMT

ask a doctor free chat canada A single Prefer header field defining the same three preference tokens:

POST /foo HTTP/1.1
Host: example.org
Prefer: handling=lenient, wait=100, respond-async
Date: Tue, 20 Dec 2011 12:34:56 GMT

free dating sites uk 100 free To avoid any possible ambiguity, individual preference tokens SHOULD NOT appear multiple times within a single request. If any preference is specified more than once, only the first instance is to be considered. All subsequent occurrences SHOULD be ignored without signaling an error or otherwise altering the processing of the request. This is the only case in which the ordering of preferences within a request is considered to be significant.free dating sites in canada and usa

top single malt scotch whiskey Due to the inherent complexities involved with properly implementing server-driven content negotiation, effective caching, and the application of optional preferences, implementers are urged to exercise caution when using preferences in a way that impacts the caching of a response and SHOULD NOT use the Prefer header mechanism for content negotiation. If a server supports the optional application of a preference that might result in a variance to a cache's handling of a response entity, a Vary header field MUST be included in the response listing the Prefer header field regardless of whether the client actually used Prefer in the request. Alternatively, the server MAY include a Vary header with the special value "*" as defined by [RFC7231], Section 8.2.1. Note, however, that use of the "Vary: *" header will make it impossible for a proxy to cache the response.free bollywood chat rooms uk

top single malt scotch whisky Note that while Preference tokens are similar in structure to HTTP Expect tokens, the Prefer and Expect header fields serve very distinct purposes and preferences cannot be used as expectations.free iranian chat rooms uk

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free dating sites without credit card payment 1. Return a 202 (Accepted) response for asynchronous processing if the request cannot be processed within 10 seconds. An undefined "priority" preference is also specified:

POST /some-resource HTTP/1.1
Host: example.org
Content-Type: text/plain
Prefer: respond-async, wait=10
Prefer: priority=5

{...}

best free online dating sites usa 2. Use lenient processing:

POST /some-resource HTTP/1.1
Host: example.org
Content-Type: text/plain
Prefer: Lenient

{...}

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POST /some-resource HTTP/1.1
Host: example.org
Content-Type: text/plain
Prefer: return=minimal; foo="some parameter"

{...}

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3d chat avatar games The Preference-Applied response header MAY be included within a response message as an indication as to which Prefer tokens were honored by the server and applied to the processing of a request.live chat script in php free

talisker island single malt scotch whisky ABNF:

 
  Preference-Applied = "Preference-Applied" ":" 1#applied-pref
  applied-pref = token [ BWS "=" BWS word ]
      

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talisker single malt scotch whisky aged 10 years Use of the Preference-Applied header is only necessary when it is not readily and obviously apparent that a server applied a given preference and such ambiguity might have an impact on the client's handling of the response. For instance, when using either the "return=representation" or "return=minimal" preferences, a client application might not be capable of reliably determining if the preference was (or was not) applied simply by examining the payload of the response. In such a case, the Preference-Applied header field can be used.free chat support plugin wordpress

talisker single malt scotch whisky 10 years Request:

PATCH /my-document HTTP/1.1
Host: example.org
Content-Type: application/example-patch
Prefer: return=representation

[{"op": "add", "path": "/a", "value": 1}]

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HTTP/1.1 200 OK
Content-Type: application/json
Preference-Applied: return=representation
Content-Location: /my-document

{"a": 1}

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talisker single malt scotch whisky the distillers edition The following subsections define an initial set of preferences. Additional preferences can be registered for convenience and/or to promote reuse by other applications. This specification establishes an IANA registry of preferences (see free dating site australia).free online dating australian sites

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talisker single malt scotch whisky 10 year old The "respond-async" preference indicates that the client prefers the server to respond asynchronously to a response. For instance, in the case when the length of time it takes to generate a response will exceed some arbitrary threshold established by the server, the server can honor the "respond-async" preference by returning a 202 (Accepted) response.free dating site reviews uk

chat app for ipad and blackberry ABNF:

  respond-async = "respond-async"
      

free dating sites without credit card The key motivation for the "respond-async" preference is to facilitate the operation of asynchronous request handling by allowing the client to indicate to a server its capability and preference for handling asynchronous responses.free dating sites reviews uk

free chat room online without registration An example request specifying the "respond-async" preference:

POST /collection HTTP/1.1
Host: example.org
Content-Type: text/plain
Prefer: respond-async

{Data}

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HTTP/1.1 202 Accepted
Location: http://example.org/collection/123

english chat room online without registration While the 202 (Accepted) response status is defined by [RFC7231], little guidance is given on how and when to use the response code and the process for determining the subsequent final result of the operation is left entirely undefined. Therefore, whether and how any given server supports asynchronous responses is an implementation-specific detail that is considered to be out of the scope of this specification.free dating sites australia no credit card required

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free dating uk london ABNF:

  return = "return" BWS "=" BWS ("representation" / "minimal")
      

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PATCH /item/123 HTTP/1.1
Host: example.org
Content-Type: application/example-patch
Prefer: return=representation

1c1
< ABCDEFGHIJKLMNOPQRSTUVWXYZ
---
> BCDFGHJKLMNPQRSTVWXYZ

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HTTP/1.1 200 OK
Content-Location: http://example.org/item/123
Content-Type: text/plain
ETag: "d3b07384d113edec49eaa6238ad5ff00"

BCDFGHJKLMNPQRSTVWXYZ

define single malt scotch whisky In contrast, the "return=minimal" preference can reduce the amount of data the server is required to return to the client following a request. This can be particularly useful, for instance, when communicating with limited-bandwidth mobile devices or when the client simply does not require any further information about the result of a request beyond knowing if it was successfully processed.ask doctor online free chat

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POST /collection HTTP/1.1
Host: example.org
Content-Type: text/plain
Prefer: return=minimal

{Data}

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HTTP/1.1 201 Created
Location: http://example.org/collection/123

100 percent free dating sites in germany The "return=minimal" and "return=representation" preferences are mutually exclusive directives. It is anticipated that there will never be a situation where it will make sense for a single request to include both preferences. Any such requests will likely be the result of a coding error within the client. As such, a request containing both preferences can be treated as though neither were specified.top single malt scotch in the world

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free dating site without credit card required The "wait" preference can be used to establish an upper bound on the length of time, in seconds, the client expects it will take the server to process the request once it has been received. In the case that generating a response will take longer than the time specified, the server, or proxy, can choose to utilize an asynchronous processing model by returning -- for example -- a 202 (Accepted) response.free chat application for websites

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  wait = "wait" BWS "=" BWS delta-seconds
      

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POST /collection HTTP/1.1
Host: example.org
Content-Type: text/plain
Prefer: respond-async, wait=10

{Data}

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100 free christian dating sites australia The "handling=strict" and "handling=lenient" preferences indicate, at the server's discretion, how the client wishes the server to handle potential error conditions that can arise in the processing of a request. For instance, if the payload of a request contains various minor syntactical or semantic errors, but the server is still capable of comprehending and successfully processing the request, a decision must be made to either reject the request with an appropriate "4xx" error response or go ahead with processing. The "handling=strict" preference can be used to indicate that, while any particular error may be recoverable, the client would prefer that the server reject the request. The "handling=lenient" preference, on the other hand, indicates that the client wishes the server to attempt to process the request.best free online indian dating site

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  handling = "handling" BWS "=" BWS ("strict" / "lenient")
    

100 free dating sites australia no credit card An example request specifying the "strict" preference:

POST /collection HTTP/1.1
Host: example.org
Content-Type: text/plain
Prefer: handling=strict

100 percent free dating sites australia The "handling=strict" and "handling=lenient" preferences are mutually exclusive directives. It is anticipated that there will never be a situation where it will make sense for a single request to include both preferences. Any such requests will likely be the result of a coding error within the client. As such, a request containing both preferences can be treated as though neither were specified.best online dating site india

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single malt scotch reviews 2014 Registration requests consist of the completed registration template below, typically published in the required specification. However, to allow for the allocation of values prior to publication, the Designated Expert can approve registration based on a separately submitted template once they are satisfied that a specification will be published. Preferences can be registered by third parties if the Designated Expert determines that an unregistered preference is widely deployed and not likely to be registered in a timely manner.single malt whiskey 2013

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  • Preference: (A value for the Prefer request header field that conforms to the syntax rule given in top free online dating sites 2015)
  • Value: (An enumeration or description of possible values for the preference token).
  • Optional Parameters: (An enumeration of optional parameters, and their values, associated with the preference token).
  • Description:
  • Reference:
  • Notes: [optional]

top ten dating sites 2014 The "Value" and "Optional Parameters" fields MAY be omitted from the registration template if the specific preference token definition does not define either.best free dating sites 2015 uk

free dating sites uk yahoo answers Registration requests should be sent to the <[email protected]> mailing list, marked clearly in the subject line (e.g., "NEW PREFERENCE - example" to register an "example" preference). Within at most 14 days of the request, the Designated Expert(s) will either approve or deny the registration request, communicating this decision to the review list and IANA. Denials should include an explanation and, if applicable, suggestions as to how to make the request successful.best free dating sites 2015

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  • That the requested preference name conforms to the token rule in aberlour highland single malt scotch whisky 12 years price and that it is not identical to any other registered preference name;
  • That any associated value, parameter names, and values conform to the relevant ABNF grammar specifications in aberlour highland single malt scotch whisky 12 years review;
  • That the name is appropriate to the specificity of the preference; i.e., if the semantics are highly specific to a particular application, the name should reflect that, so that more general names remain available for less specific uses.
  • That requested preferences do not constrain servers, clients, or any intermediaries to any behavior required for successful processing; and
  • That the specification document defining the preference includes a proper and complete discussion of any security considerations relevant to the use of the preference.

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absolutely free dating site in usa The "HTTP Preferences" registry's initial contents are:best single malt whiskey 2014

  • Preference: respond-async
  • Description: Indicates that the client prefers that the server respond asynchronously to a request.
  • Reference: [this specification], free online chat tool for website
  • Preference: return
  • Value: One of either "minimal" or "representation"
  • Description: When the value is "minimal", it indicates that the client prefers that the server return a minimal response to a request. When the value is "representation", it indicates that the client prefers that the server include a representation of the current state of the resource in response to a request.
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  • Preference: wait
  • Description: Indicates an upper bound to the length of time the client expects it will take for the server to process the request once it has been received.
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  • Preference: handling
  • Value: One of either "strict" or "lenient"
  • Description: When value is "strict", it indicates that the client wishes the server to apply strict validation and error handling to the processing of a request. When the value is "lenient", it indicates that the client wishes the server to apply lenient validation and error handling to the processing of the request.
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top 10 online dating sites 2013 References

best free online dating site 2013 Normative References

[RFC2119]
indian dating chat rooms, “indian dating chat sites”, BCP 14, RFC 2119, March 1997.
[RFC3864]
Klyne, G., Nottingham, M., and J. Mogul, “online dating sites ukraine”, BCP 90, RFC 3864, September 2004.
[RFC5226]
Narten, T. and H. Alvestrand, “top rated single malt scotch 2013”, BCP 26, RFC 5226, May 2008.
[RFC5234]
Crocker, D. and P. Overell, “highest rated single malt scotch 2013”, STD 68, RFC 5234, January 2008.
[RFC7230]
Fielding, R., Ed. and J. Reschke, Ed., “free dating sites ontario”, RFC 7230, June 2014.
[RFC7231]
Fielding, R., Ed. and J. Reschke, Ed., “free online dating sites ontario canada”, RFC 7231, June 2014.

best free australian dating websites Informative References

[RFC5023]
Gregorio, J. and B. de hOra, “top free australian dating sites”, RFC 5023, October 2007.

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