QUIC Working GroupM. Bishop, Editor
Internet-DraftMicrosoft
Intended status: Standards TrackNovember 28, 2016
Expires: June 1, 2017

free chat application for mobile phone Hypertext Transfer Protocol (HTTP) over QUIC

draft-ietf-quic-http-00

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free chat for cell phones The QUIC transport protocol has several features that are desirable in a transport for HTTP/2, such as stream multiplexing, per-stream flow control, and low-latency connection establishment. This document describes a mapping of HTTP/2 semantics over QUIC. Specifically, this document identifies HTTP/2 features that are subsumed by QUIC, and describes how the other features can be implemented atop QUIC.partnervermittlung rtl2 traumfrau gesucht

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free chat in bangla The QUIC transport protocol has several features that are desirable in a transport for HTTP/2, such as stream multiplexing, per-stream flow control, and low-latency connection establishment. This document describes a mapping of HTTP/2 semantics over QUIC. Specifically, this document identifies HTTP/2 features that are subsumed by QUIC, and describes how the other features can be implemented atop QUIC.welches ist das beste online dating portal

online doctor chat free bd QUIC is described in [QUIC-TRANSPORT]. For a full description of HTTP/2, see [RFC7540].free chat sites for mobiles

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bangladeshi free online chat room The words “MUST”, “MUST NOT”, “SHOULD”, and “MAY” are used in this document. It’s not shouting; when they are capitalized, they have the special meaning defined in [RFC2119].free chat rooms for mobile uk


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free local chat lines indianapolis A server advertises that it can speak HTTP/2-over-QUIC via the Alt- Svc HTTP response header. It does so by including the header in any response sent over a non-QUIC (e.g. HTTP/2 over TLS) connection:free chat rooms for singles uk

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free online chat room all over the world In addition, the list of QUIC versions supported by the server can be specified by the v= parameter. For example, if a server supported both version 33 and 34 it would specify the following header:free english online chats

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free online chat rooms around the world On receipt of this header, a client may attempt to establish a QUIC connection on port 443 and, if successful, send HTTP/2 requests using the mapping described in this document.free online chat rooms pakistani

free voice chat in pakistan without registration Connectivity problems (e.g. firewall blocking UDP) may result in QUIC connection establishment failure, in which case the client should gracefully fallback to HTTP/2-over-TLS/TCP.free online chat rooms in pakistan mix


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freie presse partnersuche chemnitz HTTP/2-over-QUIC connections are established as described in [QUIC-TRANSPORT]. The QUIC crypto handshake MUST use TLS [QUIC-TLS].partnervermittlung moskau ksenia

blaue börse chemnitz partnersuche While connection-level options pertaining to the core QUIC protocol are set in the initial crypto handshake [QUIC-TLS]. HTTP/2-specific settings are conveyed in the HTTP/2 SETTINGS frame. After the QUIC connection is established, an HTTP/2 SETTINGS frame may be sent as the initial frame of the QUIC headers stream (StreamID 3, See free worldwide chat rooms without registration). As in HTTP/2, additional SETTINGS frames may be sent mid-connection by either endpoint.free chat website for mobile

TODO:
Decide whether to acknowledge receipt of SETTINGS through empty SETTINGS frames with ACK bit set, as in HTTP/2, or rely on transport- level acknowledgment.

partnersuche chemnitz Some transport-level options that HTTP/2-over-TCP specifies via the SETTINGS frame are superseded by QUIC transport parameters in HTTP/2- over-QUIC. Below is a listing of how each HTTP/2 SETTINGS parameter is mapped:free online chat in dhaka

SETTINGS_HEADER_TABLE_SIZE:
Sent in HTTP/2 SETTINGS frame.
SETTINGS_ENABLE_PUSH:
Sent in HTTP/2 SETTINGS frame (TBD, currently set using QUIC “SPSH” connection option)
SETTINGS_MAX_CONCURRENT_STREAMS
QUIC requires the maximum number of incoming streams per connection to be specified in the initial crypto handshake, using the “MSPC” tag. Specifying SETTINGS_MAX_CONCURRENT_STREAMS in the HTTP/2 SETTINGS frame is an error.
SETTINGS_INITIAL_WINDOW_SIZE:
QUIC requires both stream and connection flow control window sizes to be specified in the initial crypto handshake, using the “SFCW” and “CFCW” tags, respectively. Specifying SETTINGS_INITIAL_WINDOW_SIZE in the HTTP/2 SETTINGS frame is an error.
SETTINGS_MAX_FRAME_SIZE:
This setting has no equivalent in QUIC. Specifying it in the HTTP/2 SETTINGS frame is an error.
SETTINGS_MAX_HEADER_LIST_SIZE
Sent in HTTP/2 SETTINGS frame.

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free chat room in karachi online A high level overview of sending an HTTP/2 request on an established QUIC connection is as follows, with further details in later sections of this document. A client should first encode any HTTP headers using HPACK [RFC7541] and frame them as HTTP/2 HEADERS frames. These are sent on StreamID 3 (see free chatting online for singles in india). The exact layout of the HEADERS frame is described in Section 6.2 of [RFC7540]. No HTTP/2 padding is required: QUIC provides a PADDING frame for this purpose.free chat rooms for mobile phones no registration

free indian chat rooms like yahoo While HEADERS are sent on stream 3, the mandatory stream identifier in each HEADERS frame indicates the QUIC StreamID on which a corresponding request body may be sent. If there is no non-header data, the specified QUIC data stream will never be used.free christian chat rooms for mobile phones

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  • the request/response is headers only, in which case a HEADERS frame with the END_STREAM bit set ends the stream specified in the HEADERS frame
  • the request/response has headers and body but no trailing headers, in which case the final QUIC STREAM frame will have the FIN bit set
  • the request/response has headers, body, and trailing headers, in which case the final QUIC STREAM frame will not have the FIN bit set, and the trailing HEADERS frame will have the END_STREAM bit set

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free chat in pakistan lahore A QUIC stream provides reliable in-order delivery of bytes, within that stream. On the wire, data is framed into QUIC STREAM frames, but this framing is invisible to the HTTP/2 layer. A QUIC receiver buffers and orders received STREAM frames, exposing the data contained within as a reliable byte stream to the application.free online chat in chennai

free online english homework help chat Bytes written to Stream 3 must be HTTP/2 HEADERS frames (or other HTTP/2 non-data frames), whereas bytes written to data streams should simply be request or response bodies. No further framing is required by HTTP/2 (i.e. no HTTP/2 DATA frames are used).free online chatting in chennai without registration

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pakistani chat room mobile When HTTP/2 headers and data are sent over QUIC, the QUIC layer handles most of the stream management. HTTP/2 StreamIDs are replaced by QUIC StreamIDs. HTTP/2 does not need to do any explicit stream framing when using QUIC - data sent over a QUIC stream simply consists of HTTP/2 headers or body. Requests and responses are considered complete when the QUIC stream is closed in the corresponding direction.online free chat room in india with no registration

pakistani chat room for mobile Like HTTP/2, QUIC uses odd-numbered StreamIDs for client initiated streams, and even-numbered IDs for server initiated (i.e. server push) streams. Unlike HTTP/2 there are a couple of reserved (or dedicated) StreamIDs in QUIC.free chat lines in indianapolis

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free online chat room without registration pakistan StreamID 1 is reserved for crypto operations (the handshake, crypto config updates), and MUST NOT be used for HTTP/2 headers or body, see [QUIC-TRANSPORT]. StreamID 3 is reserved for sending and receiving HTTP/2 HEADERS frames. Therefore the first client initiated data stream has StreamID 5.free phone chat lines in indiana

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free chat india delhi HTTP/2-over-QUIC uses HPACK header compression as described in [RFC7541]. HPACK was designed for HTTP/2 with the assumption of in- order delivery such as that provided by TCP. A sequence of encoded header blocks must arrive (and be decoded) at an endpoint in the same order in which they were encoded. This ensures that the dynamic state at the two endpoints remains in sync.free online chat rooms in world

online international chat rooms without registration QUIC streams provide in-order delivery of data sent on those streams, but there are no guarantees about order of delivery between streams. To achieve in-order delivery of HEADERS frames in QUIC, they are all sent on the reserved Stream 3. Data (request/response bodies) which arrive on other data streams are buffered until the corresponding HEADERS arrive and are read out of Stream 3.best free online chatting site in india

best free chat rooms for iphone This does introduce head-of-line blocking: if the packet containing HEADERS for stream N is lost or reordered then stream N+2 cannot be processed until they it has been retransmitted successfully, even though the HEADERS for stream N+2 may have arrived.free online chat in india

free chat room apps for iphone Trailing headers (trailers) can also be sent on stream 3. These are sent as HTTP/2 HEADERS frames, but MUST have the END_STREAM bit set, and MUST include a “:final-offset” pseudo-header. Since QUIC supports out of order delivery, receipt of a HEADERS frame with the END_STREAM bit set does not guarantee that the entire request/ response body has been fully received. Therefore, the extra “:final-offset” pseudo-header is included in trailing HEADERS frames to indicate the total number of body bytes sent on the corresponding data stream. This is used by the QUIC layer to determine when the full request has been received and therefore when it is safe to tear down local stream state. The “:final-offset” pseudo header is stripped from the HEADERS before passing to the HTTP/2 layer.free online chatting in india

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free chat rooms for iphone 4 The mapping of HTTP/2-over-QUIC with potential out of order delivery of HEADERS frames results in some changes to the HTTP/2 stream state transition diagram ([RFC7540], Section 5.1}}. Specifically the transition from “open” to “half closed (remote)”, and the transition from “half closed (local)” to “closed” takes place only when:singles in mühlhausen thüringen

  • the peer has explicitly ended the stream via either
    • an HTTP/2 HEADERS frame with END_STREAM bit set and, in the case of trailing headers, the :final-offset pseudo-header
    • or a QUIC stream frame with the FIN bit set.
  • and the full request or response body has been received.

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partnerschaftsanzeigen kostenlos HTTP/2-over-QUIC uses the HTTP/2 priority scheme described in [RFC7540] Section 5.3. In the HTTP/2 priority scheme, a given stream can be designated as dependent upon another stream, which expresses the preference that the latter stream (the “parent” stream) be allocated resources before the former stream (the “dependent” stream). Taken together, the dependencies across all streams in a connection form a dependency tree. The structure of the dependency tree changes as HTTP/2 HEADERS and PRIORITY frames add, remove, or change the dependency links between streams.welcher partner passt zu mir sternzeichen

free english speaking chat rooms Implicit in this scheme is the notion of in-order delivery of priority changes (i.e., dependency tree mutations): since operations on the dependency tree such as reparenting a subtree are not commutative, both sender and receiver must apply them in the same order to ensure that both sides have a consistent view of the stream dependency tree. HTTP/2 specifies priority assignments in PRIORITY frames and (optionally) in HEADERS frames. To achieve in-order delivery of HTTP/2 priority changes in HTTP/2-over-QUIC, HTTP/2 PRIORITY frames, in addition to HEADERS frames, are also sent on reserved stream 3. The semantics of the Stream Dependency, Weight, E flag, and (for HEADERS frames) PRIORITY flag are the same as in HTTP/2-over-TCP.welcher partner passt zu mir krebs

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free english chat room for learning ALTERNATIVE DESIGN: if the core QUIC protocol implements priorities, then this document should map the HTTP/2 priorities scheme to that provided by the core protocol. This would likely involve prohibiting the sending of HTTP/2 PRIORITY frames and setting of the PRIORITY flag in HTTP/2 HEADERS frames, to avoid conflicting directives.free chat lines for mobile phones


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meine stadt zwickau partnersuche QUIC provides stream and connection level flow control, similar in principle to HTTP/2’s flow control but with some implementation differences. As flow control is handled by QUIC, the HTTP/2 mapping need not concern itself with maintaining flow control state, or how/ when to send flow control frames to the peer. The HTTP/2 mapping must not send HTTP/2 WINDOW_UPDATE frames.free chat room in bd

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english tutor online chat Relatively small initial windows can be used, as QUIC will attempt to auto-tune the flow control windows based on usage. See [QUIC-TRANSPORT] for more details.free online chat without registration singles


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learn english online free chat room As with server push for HTTP/2-over-TCP, the server initiates a server push by sending an HTTP/2 PUSH_PROMISE frame containing the StreamID of the stream to be pushed, as well as request header fields attributed to the request. The PUSH_PROMISE frame is sent on stream 3, to ensure proper ordering with respect to other HEADERS and non- data frames. Within the PUSH_PROMISE frame, the StreamID in the common HTTP/2 frame header indicates the associated (client- initiated) stream for the new push stream, while the Promised Stream ID field specifies the StreamID of the new push stream.free chat in bangladesh

online english learning chat rooms The server push response is conveyed in the same way as a non-server- push response, with response headers and (if present) trailers carried by HTTP/2 HEADERS frames sent on reserved stream 3, and response body (if any) sent via QUIC stream frames on the stream specified in the corresponding PUSH_PROMISE frame.free online chat rooms in pakistan without registration in s a


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english speaking online chat room The HTTP/2 error codes defined in Section 7 of [RFC7540] map to QUIC error codes as follows:free online chatting website india

NO_ERROR (0x0):
Maps to QUIC_NO_ERROR
PROTOCOL_ERROR (0x1):
No single mapping?
INTERNAL_ERROR (0x2)
QUIC_INTERNAL_ERROR? (not currently defined in core protocol spec)
FLOW_CONTROL_ERROR (0x3):
QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA? (not currently defined in core protocol spec)
SETTINGS_TIMEOUT (0x4):
(depends on whether we support SETTINGS acks)
STREAM_CLOSED (0x5):
QUIC_STREAM_DATA_AFTER_TERMINATION
FRAME_SIZE_ERROR (0x6)
QUIC_INVALID_FRAME_DATA
REFUSED_STREAM (0x7):
?
CANCEL (0x8):
?
COMPRESSION_ERROR (0x9):
QUIC_DECOMPRESSION_FAILURE (not currently defined in core spec)
CONNECT_ERROR (0xa):
? (depends whether we decide to support CONNECT)
ENHANCE_YOUR_CALM (0xb):
?
INADEQUATE_SECURITY (0xc):
QUIC_HANDSHAKE_FAILED, QUIC_CRYPTO_NO_SUPPORT
HTTP_1_1_REQUIRED (0xd):
?

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learn english speaking online chat free QUIC has its own GOAWAY frame, and QUIC implementations may to expose the sending of a GOAWAY to the application. The semantics of sending a GOAWAY in QUIC are identical to HTTP/2: an endpoint sending a GOAWAY will continue processing open streams, but will not accept newly created streams.preise singlebörsen

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free online chat site india There is no HTTP/2 padding in this mapping; padding is instead provided at the QUIC layer by including QUIC PADDING frames in a packet payload. An HTTP/2 over QUIC mapping should treat any HTTP/2 level padding as an error, to avoid any possibility of inconsistent flow control states between endpoints (e.g. client sends HTTP/2 padding, counts it against flow control, server ignores).free online chat rooms in tamilnadu


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free online chat india The security considerations of HTTP over QUIC should be comparable to those of HTTP/2.single chat chemnitz


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free online chatting all world Normative References

[QUIC-TLS]
Thomson, M., Ed. and S. Turner, Ed, Ed., “Using Transport Layer Security (TLS) to Secure QUIC”.
[QUIC-TRANSPORT]
Iyengar, J., Ed. and M. Thomson, Ed., “QUIC: A UDP-Based Multiplexed and Secure Transport”.
[RFC2119]
Bradner, S., “free online chatting in america”, BCP 14, RFC 2119, free chat sites for cell phones, March 1997, <free online chat in pakistan without>.
[RFC7540]
Belshe, M., Peon, R., and M. Thomson, Ed., “free online chat worldwide”, RFC 7540, free chat in world, May 2015, <online karachi chat rooms>.
[RFC7541]
Peon, R. and H. Ruellan, “free chat room dating sites”, RFC 7541, free online chennai chat rooms india, May 2015, <free online chat in us>.

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free chat lines for cell phones Mike Bishop (editor)
Microsoft
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