Commit Graph

74 Commits

Author SHA1 Message Date
Tatsuhiro Tsujikawa a11fbf6e2f Optimize connection level remote flow control
Previously when connection level remote flow control window gets 0, we
mark the stream having DATA frame with
NGHTTP2_STREAM_FLAG_DEFERRED_FLOW_CONTROL.  When connection level
WINDOW_UPDATE is received, we checks all existing streams, including
closed ones, and call nghttp2_stream_resume_deferred_data().  The
profiler shows this is expensive.

Now we prepare dedicated priority queue for DATA frames.  And we don't
mark stream with NGHTTP2_STREAM_FLAG_DEFERRED_FLOW_CONTROL when DATA
cannot be sent solely due to connection level flow control.  Instead,
we just queue DATA item to queue.  We won't pop DATA item from queue
when connection level remote window size is 0.  This way, we avoid the
expensive operation for all streams when WINDOW_UPDATE is arrived.
2014-09-26 00:01:51 +09:00
Tatsuhiro Tsujikawa 901de5fbce Add nghttp2_option_set_recv_client_preface()
By default, nghttp2 library only handles HTTP/2 frames and does not
recognize first 24 bytes of client connection preface. This design
choice is done due to the fact that server may want to detect the
application protocol based on first few bytes on clear text
communication. But for simple servers which only speak HTTP/2, it is
easier for developers if nghttp2 library takes care of client
connection preface.

If this option is used with nonzero val, nghttp2 library checks first
24 bytes client connection preface. If it is not a valid one,
nghttp2_session_recv() and nghttp2_session_mem_recv() will return
error NGHTTP2_ERR_BAD_PREFACE, which is fatal error.
2014-09-13 19:50:44 +09:00
Tatsuhiro Tsujikawa 31528b6267 Use uint32_t for HTTP/2 error_code
h2-14 now allows extensions to define new error codes.  To allow
application callback to access such error codes, we uses uint32_t as
error_code type for structs and function parameters.  Previously we
treated unknown error code as INTERNAL_ERROR, but this change removes
this and unknown error code is passed to application callback as is.
2014-08-25 21:24:04 +09:00
Tatsuhiro Tsujikawa ab5b81bee1 Hide nghttp2_session_callbacks details and provide setter like functions
To make it possible to add new callbacks without bumping so name, we
decided to hide details of nghttp2_session_callbacks.  We provide
setter like functions to set individual callback function.
2014-08-25 21:24:04 +09:00
Tatsuhiro Tsujikawa 86b089f957 Fix buffer overrun in raw_sbuf 2014-08-06 01:49:36 +09:00
Tatsuhiro Tsujikawa 77374ac6e2 Implement SETTINGS_MAX_FRAME_SIZE and SETTINGS_MAX_HEADER_LIST_SIZE 2014-07-31 23:05:53 +09:00
Tatsuhiro Tsujikawa 8d5422c9bb Remove check for incoming header block size
The application should be responsible for the size of incoming header
block size.  Framing layer just passes everything (we have size limit
for one header/field though) to application.
2014-07-31 23:05:53 +09:00
Tatsuhiro Tsujikawa 079db14d45 Add nghttp2_session_consume() API
Reworked no automatic WINDOW_UPDATE feature.  We added new API
nghttp2_session_consume() which tells the library how many bytes are
consumed by the application.  Instead of submitting WINDOW_UPDATE by
the application, the library is now responsible to submit
WINDOW_UPDATE based on consumed bytes.  This is more reliable method,
since it enables us to properly send WINDOW_UPDATE for stream and
connection individually.  The previous implementation of nghttpx had
broken connection window management.
2014-07-31 23:05:53 +09:00
Tatsuhiro Tsujikawa 55c697e9f4 Handle multiple SETTINGS_HEADER_TABLE_SIZE in incoming SETTINGS frame
Previously we just assumed that if same settings ID is found in
SETTINGS, it is enough to process last seen entry.  But it turns out
it is not enough for SETTINGS_HEADER_TABLE_SIZE.  If we have 0 and
4096 for SETTINGS_HEADER_TABLE_SIZE in one SETTINGS, we must first
shrink dynamic table to 0 and then enlarge it to 4096.  This means
that we have to remember the minimum value and last value.
2014-07-15 00:25:31 +09:00
Tatsuhiro Tsujikawa 35ffeb5ff4 Send additional debug info when terminating session 2014-07-12 22:57:17 +09:00
Tatsuhiro Tsujikawa 593485c652 Put a limit for total contiguous headers length currently receiving 2014-07-02 22:25:32 +09:00
Tatsuhiro Tsujikawa 6da044cbb5 Send WINDOW_UPDATE for ignored DATA bytes when manual flow control is enabled
Since we do not call on_data_chunk_recv_callback for ignored DATA
chunk, if nghttp2_option_set_no_auto_connection_window_update is used,
application may not have a chance to send connection WINDOW_UPDATE.
To fix this, we accumulate those received bytes, and if it exceeds
certain number, we automatically send connection-level WINDOW_UPDATE.
2014-07-02 21:20:40 +09:00
Tatsuhiro Tsujikawa ed38dbf67a Add const qualifier to opaque_data parameter in nghttp2_submit_ping 2014-07-02 00:59:36 +09:00
Tatsuhiro Tsujikawa ad60a18fb9 Remove BLOCKED frame 2014-06-24 00:22:41 +09:00
Tatsuhiro Tsujikawa 975524a125 Don't send GOAWAY with last stream ID larger than the value previously sent 2014-06-18 11:03:55 +09:00
Tatsuhiro Tsujikawa 817e1ce2a7 Rename last_stream_id in nghttp2_session to remote_last_stream_id
This commits also fixes last stream ID in GOAWAY uses wrong stream ID.
2014-06-18 10:56:32 +09:00
Tatsuhiro Tsujikawa 2878e1e258 Refactor storage of settings
Now local and remote settings values are stored in dedicated structure
nghttp2_settings_storage.
2014-06-10 21:29:19 +09:00
Tatsuhiro Tsujikawa dacc9b2f1c Separate extension frames from core frames
ALTSVC and BLOCKED frames are now extension frames.  To add new
extension frame without modifying nghttp2_frame union, which causes so
name bump, we separated extension frames from core frames.
nghttp2_frame includes generic nghttp2_extension.  The payload member
of nghttp2_extension will point to the structure of extension frame
payload.  The frame types of extension frames are defined in
nghttp2_ext_frame_type.
2014-06-09 23:16:54 +09:00
Tatsuhiro Tsujikawa c46d3dafc6 Remove PAD_HIGH and Pad High field
CONTINUATION now doesn't have padding.
2014-06-07 18:15:36 +09:00
Tatsuhiro Tsujikawa 3e3d51842b Interleave stream DATA more naturally
We simulate resource sharing by decreasing weight.  The thing is if
weight is wrapped, that item continues to send DATA until its weight
gets lowered under the other items.  This commits fix this issue.
2014-05-08 23:07:29 +09:00
Tatsuhiro Tsujikawa 6bb410d603 Implement BLOCKED frame 2014-04-25 00:38:24 +09:00
Tatsuhiro Tsujikawa aa4d43f31e Allow exclusive dependency to stream 0 2014-04-17 21:18:18 +09:00
Tatsuhiro Tsujikawa ac86b51e37 Implement simplified dependency based priority 2014-04-15 22:55:07 +09:00
Tatsuhiro Tsujikawa 7563839756 Update doc 2014-04-06 21:13:44 +09:00
Tatsuhiro Tsujikawa f2d945734e Rename framebuflen as framerv, cause it is not a length 2014-04-01 21:59:26 +09:00
Tatsuhiro Tsujikawa f5ead55f0e Check payload length when submitting GOAWAY and ALTSVC 2014-04-01 21:55:29 +09:00
Tatsuhiro Tsujikawa f785e56dba Implement ALTSVC frame 2014-04-01 21:47:51 +09:00
Tatsuhiro Tsujikawa ab2dc5967d Replace HTTP/2.0 with HTTP/2 2014-03-30 19:26:37 +09:00
Tatsuhiro Tsujikawa 74daa16a1c Retain incoming closed streams for dependency tree
The number of closed stream to keep is limited by
MAX_CONCURRENT_STREAMS - current active stream.
2014-03-30 17:41:54 +09:00
Tatsuhiro Tsujikawa f7162ab702 Implement dependency based priority 2014-03-30 01:24:16 +09:00
Tatsuhiro Tsujikawa dbb82b0f9c Make opaque_data parameter in nghttp2_submit_goaway const 2014-03-22 19:05:58 +09:00
Tatsuhiro Tsujikawa 01586f473d Wrap small inbound buffer by nghttp_buf 2014-03-22 18:27:38 +09:00
Tatsuhiro Tsujikawa 3c631b5625 Code cleanup 2014-03-22 17:16:25 +09:00
Tatsuhiro Tsujikawa 774cf88f68 Don't add RST_STREAM frame if stream is in NGHTTP2_STREAM_CLOSING 2014-03-22 00:51:40 +09:00
Tatsuhiro Tsujikawa d07bb1ddff Rework outbound frame buffers 2014-03-13 22:11:02 +09:00
Tatsuhiro Tsujikawa 0666a73e10 Remove nghttp2_buffer 2014-03-11 21:20:51 +09:00
Tatsuhiro Tsujikawa 358b4386d3 Introduce nghttp2_buf to ease buffer management 2014-03-11 01:47:38 +09:00
Tatsuhiro Tsujikawa 547d6d1fb5 Use 4086 as max DATA payload size to make DATA frame fit into 4K buffer 2014-03-05 22:48:17 +09:00
Tatsuhiro Tsujikawa 3395f7158f Strict handling of max concurrent streams
Exceeding ACKed max concurrent streams results in connection error.
This change fixes the bug that num_{incoming,outgoing}_streams
is decremented wrongly if a stream is in reserved state and
RST_STREAM is send and its state is changed to NGHTTP2_STREAM_CLOSING.
This change also fixes the bug that transmission of push response
HEADERS does not increase num_outgoing_streams.
2014-02-20 23:10:32 +09:00
Tatsuhiro Tsujikawa 649586fff6 Add nghttp2_session_mem_send() API function
This function behaves like nghttp2_session_send(), but it does not
use nghttp2_send_callback to send data. Instead, it returns the
serialized data to trasmit and its length to the caller.
2014-02-18 23:23:11 +09:00
Tatsuhiro Tsujikawa 082876d92d Contribute flow control window for each byte PAD_HIGH and _LOW in DATA
This may help the pathological situation where window is too small.
2014-02-12 21:35:40 +09:00
Tatsuhiro Tsujikawa 3144bcbe20 Remove unused iframe->error_code 2014-02-11 16:34:42 +09:00
Tatsuhiro Tsujikawa 78d202ac30 Callback based padding from application
Now previous padding options are removed and instead we added
select_padding_callback to select padding length for each frame
by application. If this callback is not implemented by application,
no padding is added.

This change also fixes the broken session_detect_idle_stream()
if stream_id is our side.
2014-02-11 15:28:44 +09:00
Tatsuhiro Tsujikawa 68b5ffc1dc Rename padding related names 2014-02-09 21:46:15 +09:00
Tatsuhiro Tsujikawa 1db2195389 Implement padding for HEADERS and CONTINUATION 2014-02-09 15:17:26 +09:00
Tatsuhiro Tsujikawa 814d0f76f3 Implement DATA frame padding 2014-02-08 00:23:18 +09:00
Tatsuhiro Tsujikawa c79adf6997 Remove flow control disabling feature 2014-02-06 00:23:20 +09:00
Tatsuhiro Tsujikawa e186e01933 Replace on_end_headers_callback with on_begin_headers_callback
Previously, there is inconsistency when on_frame_recv_callback
is called between HEADERS/PUSH_PROMISE and the other frames.
For former case, it is called before header block, in latter
case, it is called after whole frame is received. To make it
consistent, we call on_frame_recv_callback for HEADERS/PUSH_PROMISE
after its frame is fully received. Since on_frame_recv_callback
can signal the end of header block, we replaced on_end_headers_callback
with on_begin_headers_callback, which is called when the reception
of the header block is started.
2014-01-29 21:23:13 +09:00
Tatsuhiro Tsujikawa a3082b7c1e Remove nghttp2_on_data_recv_callback and nghttp2_on_data_send_callback
nghttp2_data is added to nghttp2_frame union. When DATA is
received, nghttp2_on_frame_recv_callback is called. When DATA is
sent, nghttp2_on_frame_send_callback is called.
2014-01-27 22:16:05 +09:00
Tatsuhiro Tsujikawa fc07a62337 Rename nghttp2_data as nghttp2_private_data
This is a preparation to add public nghttp2_data struct to
nghttp2_frame union.
2014-01-27 21:22:33 +09:00