HTTP Working GroupM. Nottingham
Intended status: Standards TrackP. McManus
Expires: August 6, 2016Mozilla
J. Reschke
February 3, 2016

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online dating sites 100 percent free This document specifies "Alternative Services" for HTTP, which allow an origin's resources to be authoritatively available at a separate network location, possibly accessed with a different protocol dating sites 100 free

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frauen osteuropa in deutschland Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as “work in progress”.free dating sites in copenhagen

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frauen osteuropa partnervermittlung This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (hannover single chat kostenlos) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD dating for disabled

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frauen osteuropa erfahrungen HTTP [RFC7230] conflates the identification of resources with their location. In other words, "http://" (and "https://") URIs are used to both name and find things to interact with.motto profil partnersuche

chat und flirt kostenlos runterladen In some cases, it is desirable to separate identification and location in HTTP; keeping the same identifier for a resource, but interacting with it at a different location on the online dating sites young adults

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partnervermittlung tschechien slowakei This specification defines a new concept in HTTP, "Alternative Services", that allows an origin server to nominate additional means of interacting with it on the network. It defines a general framework for this in 100 free disabled dating websites, along with specific mechanisms for advertising their existence using HTTP header fields (100 percent free disabled dating sites) or HTTP/2 frames (partnervermittlung julie gmbh leipzig), plus a way to indicate that an alternative service was used (partnersuche weltweit kostenlos).single mama sucht single papa

suche tschechische partnervermittlung It also endorses the status code 421 (Misdirected Request) (partnervermittlung julie gmbh halle) that origin servers (or their nominated alternatives) can use to indicate that they are not authoritative for a given origin, in cases where the wrong location is used.kleinanzeigen kontakte kostenlos

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chat flirt community kostenlos The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC2119].russische frau gesucht jena

tschechische partnervermittlung kostenlos This document uses the Augmented BNF defined in [RFC5234] and updated by [RFC7405] along with the "#rule" extension defined in singlebörse norddeutschland kostenlos of [RFC7230]. The rules below are defined in [RFC5234], [RFC7230], and [RFC7234]:partnersuche motto lyrics

OWS           = <OWS, see [RFC7230], free dating and free chatting>
delta-seconds = <delta-seconds; see [RFC7234], partnersuche motto ideen>
port          = <port, see [RFC7230], frau russland sucht mann>
quoted-string = <quoted-string, see [RFC7230], russische frau sucht mann>
token         = <token, see [RFC7230], partnersuche textvorlagen outlook>
uri-host      = <uri-host, see [RFC7230], erfahrung>

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partnersuche usa florida locations This specification defines a new concept in HTTP, the "Alternative Service". When an origin (see [RFC6454]) has resources that are accessible through a different protocol / host / port combination, it is said to have an alternative service singles schweiz

partnersuche türkische singles An alternative service can be used to interact with the resources on an origin server at a separate location on the network, possibly using a different protocol configuration. Alternative services are considered authoritative for an origin's resources, in the sense of [RFC7230], partnervermittlung julie gmbh magdeburg.partnersuche wuppertal elberfeld

free dating sites and chats For example, an origin:

("http", "", "80")

chat und flirt kostenlos xp might declare that its resources are also accessible at the alternative service:

("h2", "", "81")

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partnersuche usa florida klima Alternative services do not replace or change the origin for any given resource; in general, they are not visible to the software "above" the access mechanism. The alternative service is essentially alternative routing information that can also be used to reach the origin in the same way that DNS CNAME or SRV records define routing information at the name resolution level. Each origin maps to a set of these routes — the default route is derived from the origin itself and the other routes are introduced based on alternative-service ohne

partnersuche in greifswald youniq Furthermore, it is important to note that the first member of an alternative service tuple is different from the "scheme" component of an origin; it is more specific, identifying not only the major version of the protocol being used, but potentially communication options for that protocol.partnersuche motto youtube

partnersuche in greifswald yachthafen This means that clients using an alternative service can change the host, port and protocol that they are using to fetch resources, but these changes MUST NOT be propagated to the application that is using HTTP; from that standpoint, the URI being accessed and all information derived from it (scheme, host, port) are the same as before.partnervermittlung julie gmbh zdf

partnersuche bad essen Importantly, this includes its security context; in particular, when TLS [RFC5246] is used to authenticate, the alternative service will need to present a certificate for the origin's host name, not that of the alternative. Likewise, the Host header field ([RFC7230], heiratswillige frauen aus polen) is still derived from the origin, not the alternative service (just as it would if a CNAME were being used).free dating site perth western australia

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partnersuche usa florida flug The ALPN protocol name is used to identify the application protocol or suite of protocols used by the alternative service. Note that for the purpose of this specification, an ALPN protocol name implicitly includes TLS in the suite of protocols it identifies, unless specified otherwise in its definition. In particular, the ALPN name "http/1.1", registered by partnersuche test kostenlos pedigree of [RFC7301], identifies HTTP/1.1 over TLS.christliche partnersuche in österreich

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partnersuche niederlande youtube Mechanisms for discovering alternative services also associate a freshness lifetime with them; for example, the Alt-Svc header field uses the "ma" gay dating in bangalore

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exklusive partnervermittlung russland Furthermore, if the connection to the alternative service fails or is unresponsive, the client MAY fall back to using the origin or another alternative service. Note, however, that this could be the basis of a downgrade attack, thus losing any enhanced security properties of the alternative service. If the connection to the alternative service does not negotiate the expected protocol (for example, ALPN fails to negotiate h2, or an Upgrade request to h2c is not accepted), the connection to the alternative service MUST be considered to have failed.partnersuche wuppertal zoo

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exklusive partnervermittlung rumänien An HTTP(S) origin server can advertise the availability of alternative services to clients by adding an Alt-Svc header field to gratis deutschland jobs

Alt-Svc       = clear / 1#alt-value
clear         = %s"clear"; "clear", case-sensitive
alt-value     = alternative *( OWS ";" OWS parameter )
alternative   = protocol-id "=" alt-authority
protocol-id   = chat gratis deutschland juist ; percent-encoded ALPN protocol name
alt-authority = best latest online dating site ; containing [ best online dating sites in sri lanka ] ":" online dating site lawsuit
parameter     = online dating sites lahore "=" ( best online dating sites to get laid / best online dating sites for late 20s )

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partnervermittlung vertrag o2 ALPN protocol names are octet sequences with no additional constraints on format. Octets not allowed in tokens ([RFC7230], online speed dating sydney) MUST be percent-encoded as per online speed dating software of [RFC3986]. Consequently, the octet representing the percent character "%" (hex 25) MUST be percent-encoded as speed dating south africa

partnersuche usa florida hollywood In order to have precisely one way to represent any ALPN protocol name, the following additional constraints apply: pech und schwefel online speed dating

  1. Octets in the ALPN protocol name MUST NOT be percent-encoded if they are valid token characters except "%", and
  2. When using percent-encoding, uppercase hex digits MUST be used.

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play speed dating 2 free online The "alt-authority" component consists of an OPTIONAL uri-host ("host" in free flirt chat rooms of [RFC3986]), a colon (":"), and a port mobile flirt chat rooms

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Alt-Svc: h2=":8000"

gay dating websites in bangalore This indicates the "h2" protocol ([RFC7540]) on the same host using the indicated port 8000.

gay dating bangalore locanto An example involving a change of host:

Alt-Svc: h2=""

gay dating spots in bangalore This indicates the "h2" protocol on the host "", running on port 80. Note that the "quoted-string" syntax needs to be used because ":" is not an allowed character in "token".

gay dating bangalore vivastreet Examples for protocol name escaping:

ALPN protocol nameprotocol-idNote
h2h2No escaping needed
w=x:y#zw%3Dx%3Ay#z"=" and ":" escaped
x%yx%25y"%" needs escaping

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Alt-Svc: h2c=":8000", h2=":443"

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Alt-Svc: h2=":443"; ma=3600

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HTTP/1.1 200 OK
Content-Type: text/html
Cache-Control: max-age=600
Age: 30
Alt-Svc: h2c=":8000"; ma=60

partnersuche niederlande quoten indicates that an alternative service is available and usable for the next 60 seconds. However, the response has already been cached for 30 seconds (as per the Age header field value), so therefore the alternative service is only fresh for the 30 seconds from when this response was received, minus estimated transit time.

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persist = "1"

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 |         Origin-Len (16)       | Origin? (*)                 ...
 |                   Alt-Svc-Field-Value (*)                   ...

internet partnersuche deutschland ALTSVC Frame Payload

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An unsigned, 16-bit integer indicating the length, in octets, of the Origin field.
An OPTIONAL sequence of characters containing the ASCII serialization of an origin ([RFC6454], singlebörse für teenager zimmer) that the alternative service is applicable to.
A sequence of octets (length determined by subtracting the length of all preceding fields from the frame length) containing a value identical to the Alt-Svc field value defined in partnersuche friendscout24 kostenlos nutzen (ABNF production "Alt-Svc").

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partnersuche internet stiftung warentest Receiving an ALTSVC frame is semantically equivalent to receiving an Alt-Svc header field. As a result, the ALTSVC frame causes alternative services for the corresponding origin to be replaced. Note that it would be unwise to mix the use of Alt-Svc header fields with the use of ALTSVC frames, as the sequence of receipt might be hard to predict.台灣交友网站 (online speed dating in taiwan)

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Alt-Used     = uri-host [ ":" port ]

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gute chaträume ohne anmeldung References

online dating sites young adults Normative References

Bradner, S., “partnersuche patchwork magazin”, BCP 14, RFC 2119, online speed dating chat, March 1997, <free online speed dating canada>.
Berners-Lee, T., Fielding, R., and L. Masinter, “online speed”, STD 66, RFC 3986, speed dating cam online, January 2005, <online speed dating canada>.
Narten, T. and H. Alvestrand, “speed dating compared to online dating”, BCP 26, RFC 5226, christian online speed dating, May 2008, <partnervermittlung ukraine love>.
Crocker, D., Ed. and P. Overell, “partnervermittlung lemberg ukraine”, STD 68, RFC 5234, single leipzig kostenlos youtube, January 2008, <single leipzig kostenlos parken>.
Klensin, J., “online dating site for seniors”, RFC 5890, partnervermittlung ukraine vergleich, August 2010, <partnervermittlung ukraine vip>.
Eastlake, D., “partnervermittlung ukraine video”, RFC 6066, pv partnervermittlung ukraine, January 2011, <single leipzig kostenlos xp>.
Barth, A., “free mobile flirt chat sites”, RFC 6454, free online mobile flirt chat, December 2011, <partnersuche freenet single>.
Fielding, R., Ed. and J. Reschke, Ed., “partnersuche singles friendscout24 österreich”, RFC 7230, free new dating site without payment, June 2014, <free dating sites without any payment>.
Fielding, R., Ed., Nottingham, M., Ed., and J. Reschke, Ed., “partnervermittlung in ukraine”, RFC 7234, speed dating free online game, June 2014, <online speed dating facebook>.
Friedl, S., Popov, A., Langley, A., and S. Emile, “partnervermittlung polen kostenlos”, RFC 7301, partnersuche portale kostenlos chip, July 2014, <chatraum ohne anmeldung erstellen>.
Kyzivat, P., “chat ohne anmeldung de”, RFC 7405, partnersuche patchwork ideen, December 2014, <chaträume zum flirten ohne anmeldung>.
Belshe, M., Peon, R., and M. Thomson, Ed., “partnersuche in münster”, RFC 7540, partnersuche portale kostenlos runterladen, May 2015, <partnersuche erfurt single>.

chat ohne registrieren kostenlos youtube Informative References

Klyne, G., Nottingham, M., and J. Mogul, “partnervermittlung mecklenburg vorpommern greifswald”, BCP 90, RFC 3864, September 2004, <online dating relationships statistics>.
Dierks, T. and E. Rescorla, “partnersuche kostenlos ohne e mail adresse”, RFC 5246, online dating portale im test, August 2008, <partnersuche münster zoo>.
Cotton, M., Eggert, L., Touch, J., Westerlund, M., and S. Cheshire, “absolut kostenlos flirten lernen”, RFC 6335, motto einer partnersuche, August 2011, <largest dating site in south africa>.
Evans, C., Palmer, C., and R. Sleevi, “100 free disabled dating site”, RFC 7469, partnersuche auf, April 2015, <free online dating sites for disabled>.

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