Commit Graph

458 Commits

Author SHA1 Message Date
Tatsuhiro Tsujikawa 80f7abb565 Fix crash caused by the regression in 9f8fc7b2bb 2015-12-17 22:25:28 +09:00
Tatsuhiro Tsujikawa 9f8fc7b2bb Strict error handling for frames which are not allowed after closed (remote)
This makes h2spec strict mode a bit happier.  We still one failing
test with h2spec -S (strict mode).
2015-12-17 21:31:20 +09:00
Tatsuhiro Tsujikawa 9cfda0c070 Update doc 2015-12-17 18:04:16 +09:00
Tatsuhiro Tsujikawa 68c5deea5a Clarify the condition when opening new stream from remote is allowed 2015-12-11 21:23:49 +09:00
Tatsuhiro Tsujikawa f14ac74316 At least check stream ID is valid when PUSH_PROMISE is received in goaway mode 2015-12-10 23:54:54 +09:00
Tatsuhiro Tsujikawa 0c70ff5658 Simplify 2015-12-10 23:18:02 +09:00
Tatsuhiro Tsujikawa 4bcc14fc67 Reschedule stream when only weight is changed
Previously, we only updated stream's weight field when only weight was
changed by PRIORITY frame.  If stream is queued, it would be better to
actually reschedule it based on new weight.  This could be especially
useful if weight is increased.
2015-12-07 23:14:22 +09:00
Tatsuhiro Tsujikawa a151a44caf Set max number of outgoing concurrent streams to 100 by default
Instead of using nonsensical large value for max outgoing concurrent
streams, use more sensible value, 100.
2015-12-03 23:45:03 +09:00
Tatsuhiro Tsujikawa 93d8636fb0 Keep incoming streams only at server side
We should only keep incoming closed streams because we only keep at
most max concurrent streams, which only applied to incoming streams.
2015-12-03 22:48:41 +09:00
Tatsuhiro Tsujikawa 2288ee8060 Create stream object for pushed resource during nghttp2_submit_push_promise()
Previously, stream object for pushed resource was not created during
nghttp2_submit_push_promise().  It was created just before
nghttp2_before_frame_send_callback was called for that PUSH_PROMISE
frame.  This means that application could not call
nghttp2_submit_response for the pushed resource before
nghttp2_before_frame_send_callback was called.  This could be solved
by callback chaining, but for web server with back pressure from
backend stream, it is a bit unnecessarily hard to use.

This commit changes nghttp2_submit_push_promise() behaviour so that
stream object is created during that call.  It makes application call
nghttp2_submit_response right after successful
nghttp2_submit_push_promise call.
2015-12-02 21:16:30 +09:00
Tatsuhiro Tsujikawa 12b2e0a2b3 Add nghttp2_session_create_idle_stream() API
See GH-436
2015-11-28 15:23:44 +09:00
Tatsuhiro Tsujikawa aacac613af Assert dep_stream is non-null to shut up scan-build 2015-11-28 00:50:29 +09:00
Tatsuhiro Tsujikawa a70445e122 Retain stream in reserved state on client side
Application may use it using nghttp2_stream_* functions, and traverse
its dependency.
2015-11-27 22:54:55 +09:00
Tatsuhiro Tsujikawa f23e34fa3c Handle response in nghttp2_on_begin_frame_callback
Previously, nghttp2_session_end_request_headers_received assumes
stream is still writable (in other words, local endpoint has not sent
END_STREAM).  But this assumption is false, because application can
send response in nghttp2_on_begin_frame_callback.  Probably, this
assumption was made before the callback was introduced.  This commit
addresses this issue.  Since all
nghttp2_session_end_*_headers_received functions are identical, we
refactored them into one function.
2015-11-27 22:50:13 +09:00
Tatsuhiro Tsujikawa 3d1d54e2ce Remove dead code 2015-11-27 21:13:44 +09:00
Tatsuhiro Tsujikawa b08d5b1975 Explicitly treat stream_id 0 as error in nghttp2_session_change_stream_priority 2015-11-24 22:34:36 +09:00
Tatsuhiro Tsujikawa b53b1381b7 Fix bug that nghttp2_session_find_stream(session, 0) returned NULL
Previously, nghttp2_session_find_stream(session, 0) returned NULL
despite the fact that documentation said that it should return root
stream.  Now it is corrected, and it returns root stream as
documented.
2015-11-24 22:30:12 +09:00
Tatsuhiro Tsujikawa 8f970dec0e Update doc 2015-11-23 21:05:25 +09:00
Tatsuhiro Tsujikawa aa317c89ea Add API to change stream priority without sending PRIORITY frame
The added API is nghttp2_session_change_stream_priority().  This
provides the same functionality to re-prioritize stream when PRIORITY
frame.  is received, but we do it without PRIORITY frame.  This could
be useful for server to change pushed stream's priority silently.
2015-11-21 18:32:42 +09:00
Tatsuhiro Tsujikawa 63a50b1ccf Add nghttp2_session_check_server_session() API
This is very simple API, and it returns nonzero if session is
initialized as server.
2015-11-21 15:07:55 +09:00
Tatsuhiro Tsujikawa d7b0768ab8 Fix bug that dep_stream->sum_dep_weight was not updated 2015-11-20 21:24:54 +09:00
Tatsuhiro Tsujikawa 3bbb05f59b Optimize the case when only weight is changed 2015-11-20 00:19:02 +09:00
Tatsuhiro Tsujikawa b95a3c4b28 Consider to use CANCEL error code when closing streams with GOAWAY
For clients, CANCEL is more appropriate for both incoming/outgoing
streams.  For servers, CANCEL is appropriate for its pushed stream
(outgoing), but REFUSED_STREAM is more appropriate for incoming
stream.
2015-11-16 22:53:31 +09:00
Tatsuhiro Tsujikawa b918f9650a Don't send push response if GOAWAY has been received 2015-11-16 22:47:12 +09:00
Tatsuhiro Tsujikawa 7463493259 Use error code CANCEL to reset pushed reserved stream from remote 2015-11-16 22:20:27 +09:00
Tatsuhiro Tsujikawa c6ef1c02b9 Switch to clang-format-3.6 2015-11-13 00:53:29 +09:00
Tatsuhiro Tsujikawa 269a100081 Add nghttp2_session_upgrade2(), deprecate nghttp2_session_upgrade()
To validate actual response body length against the value declared in
content-length response header field, we first check request method.
If request method is HEAD, respose body must be 0 regardless of the
value in content-length.  nghttp2_session_upgrade() has no parameter
to indicate the request method is HEAD, so we failed to validate
response body if HEAD is used with HTTP Upgrade.  New
nghttp2_session_upgrade2() accepts new parameter to indicate that
request method is HEAD or not to fix this issue.  Although, this issue
affects client side only, we deprecate nghttp2_session_upgrade() in
favor of nghttp2_session_upgrade2() for both client and server side.
2015-11-07 16:13:06 +09:00
Tatsuhiro Tsujikawa 5e7e479c6c Workaround HTTP upgrade with HEAD request
By default, we check the length of response body matches
content-length.  For HEAD request, this is not necessarily true, so we
sniff request method, and if it is HEAD, make sure that response body
length is 0.  But this does not work for HTTP Upgrade, since
nghttp2_session_upgrade() has no parameter to tell the request method
was HEAD.  This commit disables this response body length validation
for the stream upgraded by HTTP Upgrade.  We will add new version of
nghttp2_session_upgrade with the parameter to pass the request method
information so that we can handle this situation properly.
2015-11-07 10:56:40 +09:00
Tatsuhiro Tsujikawa be0d0e2995 Rename nghttp2_session_request_allowed as nghttp2_session_check_request_allowed 2015-10-30 22:48:27 +09:00
Tatsuhiro Tsujikawa 1c37abc0dd Add nghttp2_session_request_allowed() API function
This function is useful for the client application to know that there
is a chance that request can be sent.  If this function returns 0,
there is zero chance to make a request.

This commit also set error_code passed to
nghttp2_on_stream_close_callback to NGHTTP2_REFUSED_STREAM if request
is not sent.
2015-10-29 22:53:30 +09:00
Alexis La Goutte b4f363ef53 Fix Value stored to 'rv' is never read found by Clang Analyzer 2015-10-26 15:22:13 +01:00
Tatsuhiro Tsujikawa 5bc3dfa1cd Shrink to the minimum table size seen in local SETTINGS 2015-10-24 17:49:50 +09:00
Tatsuhiro Tsujikawa 46d7c30c17 Update doc 2015-10-21 00:18:27 +09:00
Tatsuhiro Tsujikawa 3f4b6f2b1c Clean up 2015-10-11 17:29:29 +09:00
Tatsuhiro Tsujikawa 45d4c9dece Add new error code NGHTTP2_ERR_PAUSE to send_data_callback
If application returns NGHTTP2_ERR_PAUSE from send_data_callback, it
means application processed all data, but wants to make
nghttp2_session_mem_send or nghttp2_session_send return immediately.
This is useful if application writes to fixed sized buffers, and there
is no room to write more data.
2015-10-03 17:16:42 +09:00
Tatsuhiro Tsujikawa cea76226b1 Avoid excessive WINDOW_UPDATE queuing 2015-10-01 01:19:57 +09:00
Tatsuhiro Tsujikawa d22ced77c0 Return fatal error if flooding is detected to close session immediately
This change adds new return error code from nghttp2_session_mem_recv
and nghttp2_session_recv functions, namely NGHTTP2_ERR_FLOODED.  It is
fatal error, and is returned when flooding was detected.
2015-09-30 22:19:03 +09:00
Tatsuhiro Tsujikawa 0cb8c82125 Detect flooding and tear down session 2015-09-30 00:44:08 +09:00
Tatsuhiro Tsujikawa 637288359e Ignore 0 length header partial block if it is not final 2015-09-25 22:53:35 +09:00
Tatsuhiro Tsujikawa 1f72648b0e Fix compile error with --enable-debug and --enable-werror 2015-09-25 22:19:18 +09:00
Tatsuhiro Tsujikawa 170f2a144a Fix warning with gcc 2015-09-23 18:26:02 +09:00
Tatsuhiro Tsujikawa 28fe3e7e89 More warning flags for --enable-werror 2015-09-23 16:49:45 +09:00
Tatsuhiro Tsujikawa eacd6eeed2 Check header block limit after new stream is opened 2015-09-16 00:40:31 +09:00
Tatsuhiro Tsujikawa 928a81885c Limit the number of incoming reserved (remote) streams
RFC 7540 does not enforce any limit on the number of incoming reserved
streams (in RFC 7540 terms, streams in reserved (remote) state).  This
only affects client side, since only server can push streams.
Malicious server can push arbitrary number of streams, and make
client's memory exhausted.  The new option,
nghttp2_set_max_reserved_remote_streams, can set the maximum number of
such incoming streams to avoid possible memory exhaustion.  If this
option is set, and pushed streams are automatically closed on
reception, without calling user provided callback, if they exceed the
given limit.  The default value is 200.  If session is configured as
server side, this option has no effect.  Server can control the number
of streams to push.
2015-08-23 21:43:41 +09:00
Tatsuhiro Tsujikawa 059280d1a5 Add stream public API
The intention of this stream API is give server application about
stream dependency information, so that it can utilize it for better
scheduling of stream processing.  We have no plan to add object
oriented API based on stream object.
2015-08-19 23:04:06 +09:00
Tatsuhiro Tsujikawa 5b59e46e2b Rewrite priority handling
We now use priority queue per stream, which contains the stream which
has ready to send a frame, or one of its descendants have a frame to
send.  We maintain invariant that if a stream is queued, then its
ancestors are also queued (except for root).  When we re-schedule
stream after transmission, we re-schedule all ancestors, so that
streams on the other path can get a chance to send.  This is basically
the same mechanism h2o project uses, but there are differences in the
details.
2015-08-17 22:35:50 +09:00
Tatsuhiro Tsujikawa 73b77964ef Reset last_cycle to 0 if queue gets empty 2015-08-15 01:08:20 +09:00
Tatsuhiro Tsujikawa d1e49a196d Remove restriction in regard to number of stream in dependency tree
Previously, the number of stream in one dependency tree (not including
root) is limited to 120.  This is due to the fact that we use
recursive calls to traverse trees.  Now we replaced recursive calls
with loop, we can remove this limitation.  Also now all streams are
descendant of root stream, rather than linked list of individual
subtree root.
2015-08-15 00:53:09 +09:00
Tatsuhiro Tsujikawa e66bd490a4 Fix crash if response or data is submitted to closing stream 2015-07-31 21:11:16 +09:00
Tatsuhiro Tsujikawa 8c701bb139 Header table size UINT32_MAX must be accepted 2015-07-30 21:19:46 +09:00