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* HTTP/2 - fix the handling of PUSH_PROMISETimur Pocheptsov2016-10-215-20/+88
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | HTTP/2 allows a server to pre-emptively send (or "push") responses (along with corresponding "promised" requests) to a client in association with a previous client-initiated request. This can be useful when the server knows the client will need to have those responses available in order to fully process the response to the original request. Server push is semantically equivalent to a server responding to a request; however, in this case, that request is also sent by the server, as a PUSH_PROMISE frame. The PUSH_PROMISE frame includes a header block that contains a complete set of request header fields that the server attributes to the request. After sending the PUSH_PROMISE frame, the server can begin delivering the pushed response as a response on a server-initiated stream that uses the promised stream identifier. This patch: - fixes the HPACK decompression of PUSH_PROMISE frames; - allows a user to enable PUSH_PROMISE; - processes and caches pushed data for promised streams; - updates auto-test - emulates a simple PUSH_PROMISE scenario. Change-Id: Ic4850863a5e3895320baac3871a723fc091b4aca Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
* Refactor Http2::FrameReader/Http2::FrameWriterTimur Pocheptsov2016-08-194-320/+255
| | | | | | | | | | | | | | Introduce new entity: class Http2::Frame with accessors like payloadSize/type/flags/streamID etc. (they actually read /interpret raw bytes from a frame's buffer) instead of duplicating this functionality in reader/writer classes. Delete defaulted members and remove explicitly defined move ctors/operators (not needed actually). Update auto-test ('HTTP/2 server') to use these new classes. Change-Id: Ie3516efbd095704e212142eef9e792323678ccfa Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
* HTTP/2 - do not set END_HEADERS if we have CONTINUATIONsTimur Pocheptsov2016-08-171-0/+1
| | | | | | | | | Setting END_HEADERS flag on a HEADERS frame means we do not have CONTINUATION frame(s). So do NOT set it too early, only if we fit into a single frame. Change-Id: I891a2db227cee59e4eacfe7c2f18b431cd85fe47 Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
* http2frame - do not rely on a socket's bufferTimur Pocheptsov2016-08-112-30/+64
| | | | | | | | | | | | | | | - Whenever we have a read notification, read this data, even if it's not enough for a frame's header - otherwise, QNAM can use a socket in an Ubuffered mode and FrameReader can potentially fail to read anything correctly. - Do not call/rely on bytesAvailable and do not try to invoke _q_receiveReply in Qt::QueuedConnection mode, instead try to read until we end up in an incomplete frame or some error. Change-Id: I7f44ba9e34bc64f3e26bd29080f0050da635b3ae Reviewed-by: Alex Trotsenko <alex1973tr@gmail.com> Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
* Revert "Implement protocol upgrade for HTTP/2 enabled requests"Timur Pocheptsov2016-08-042-52/+0
| | | | | | | | | This reverts commit 12d71f4ea20415ff2274e1e90f9e4d5a8b935d7f. This change is breaking a build + incomplete as my test revealed. Will have to re-try later. Change-Id: I7ea089093a832aa5822caaaac56e62f5fda4df17 Reviewed-by: Liang Qi <liang.qi@qt.io>
* Implement protocol upgrade for HTTP/2 enabled requestsTimur Pocheptsov2016-08-032-0/+52
| | | | | | | | | | | | | | Without ALPN/NPN (== without OpenSSL) we can negotiate HTTP/2 using the protocol upgrade procedure as described by RFC7540. Since there is no TLS handshake, after our http channel was connected we first send an 'augmented' HTTP/1.1 request - its header contains additional 'HTTP2-Settings' and 'Upgrade' (to 'h2c') fields. If we receive reponse 101 (switch protocol) we re-create a protocol handler and switch to HTTP/2. Task-number: QTBUG-50955 Change-Id: I36e9985e06ba76edaf7fdb22bb43770f8d593c61 Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
* HTTP/2 - fix 'GOAWAY' frame size validationTimur Pocheptsov2016-07-251-2/+6
| | | | | | | | | Found while implementing cleartext http2 (and sending some erroneous frames) - GOAWAY can have some 'opaque debug information payload' so the frame's size is at least 8 bytes, but can be more. Change-Id: I90fb8a3df22768673c4f40ba3bf6a3f5ffe33058 Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
* Add "We mean it." warning to HTTP2 protocol handler headersFriedemann Kleint2016-07-133-0/+33
| | | | | | | | | | | | QtNetwork: qtbase/src/network/access/http2/http2frames_p.h does not have the "We mean it." warning QtNetwork: qtbase/src/network/access/http2/http2protocol_p.h does not have the "We mean it." warning QtNetwork: qtbase/src/network/access/http2/http2streams_p.h does not have the "We mean it." warning Amends change b2c0f9713c1c39bc3214df49f0d2b44bcc84d790. Task-number: QTBUG-50956 Change-Id: Ia266a4f8625d89745b3a2dcaff6b15a712e9cadc Reviewed-by: Timur Pocheptsov <timur.pocheptsov@theqtcompany.com>
* HTTP2 protocol handlerTimur Pocheptsov2016-07-087-2/+1218
| | | | | | | | | | Add HTTP2 support in QNAM - QHttp2ProtocolHandler + aux. classes. [ChangeLog][QtNetwork] Added support for HTTP/2 protocol Task-number: QTBUG-50956 Change-Id: I3a119cfbb1fb3118d9003225f5e54b46ae2829b6 Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
* HPACK implementationTimur Pocheptsov2016-06-159-0/+2763
Static Huffman coding + HPACK encode/decode algorithm (for HTTP2) + auto test. Change-Id: I85d6269076cc1d586d17c87bcdee49c21522ef78 Task-number: QTBUG-50946 Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>