Commit Graph

582 Commits

Author SHA1 Message Date
Tatsuhiro Tsujikawa 505a300d93 Refuse PUSH_PROMISE while unacked local ENABLE_PUSH is 0
After we sent SETTINGS including ENABLE_PUSH = 0, peer may already
issue PUSH_PROMISE before receiving our SETTINGS and react it to
SETTINGS ACK.  Previously we accept this PUSH_PROMISE.  In this
commit, we check the pending ENABLE_PUSH value and if it means
disabling push, we refuse PUSH_PROMISE with RST_STREAM of error
REFUSED_STREAM.
2015-03-07 16:17:40 +09:00
Tatsuhiro Tsujikawa a2a9f15307 tests: Use nghttp2_mem instead of raw malloc()/free()
Fixes GH-170
2015-03-03 23:23:43 +09:00
Tatsuhiro Tsujikawa 05b8901d69 Call on_invalid_frame_recv_callback on bad HTTP messaging 2015-02-26 22:59:07 +09:00
Tatsuhiro Tsujikawa 814c7e68e0 Ignore regular headers if it includes illegal characters.
This commit only affects the library behaviour unless
nghttp2_option_set_no_http_messaging() is used.

We like strict validation against header field name and value against
RFC 7230, but we have already so much web sites and libraries in
public internet which do not obey these rules.  Simply just
terminating stream because of this may break web sites and it is too
disruptive.  So we decided that we should be conservative here so
those header fields containing illegal characters are just ignored.
But we are conservative only for regular headers.  We are strict for
pseudo headers since it is new to HTTP/2 and new implementations
should know the rules better.
2015-02-22 23:13:27 +09:00
Tatsuhiro Tsujikawa 6051ff63e0 tests: Fix compile error with gcc-4.7 2015-02-22 17:43:00 +09:00
Tatsuhiro Tsujikawa b3846d6c27 Rename NGHTTP2_OPTMASK_NO_HTTP_SEMANTICS with NGHTTP2_OPTMASK_NO_HTTP_MESSAGING 2015-02-20 23:07:48 +09:00
Tatsuhiro Tsujikawa b157d4ebb2 Validate HTTP semantics by default
Previously we did not check HTTP semantics and it is left out for
application.  Although checking is relatively easy, but they are
scattered and error prone.  We have implemented these checks in our
applications and also feel they are tedious.  To make application
development a bit easier, this commit adds basic HTTP semantics
validation to library code.  We do following checks:

server:

* HEADERS is either request header or trailer header.  Other type of
header is disallowed.

client:

* HEADERS is either zero or more non-final response header or final
  response header or trailer header.  Other type of header is
  disallowed.

For both:

* Check mandatory pseudo header fields.
* Make sure that content-length matches the amount of DATA we
  received.

If validation fails, RST_STREAM of type PROTOCOL_ERROR is issued.
2015-02-20 01:01:10 +09:00
Tatsuhiro Tsujikawa 9c30211da9 Ignore all incoming bytes when first SETTINGS is not received 2015-02-15 01:20:10 +09:00
Tatsuhiro Tsujikawa 442572c1f4 Handle situation where request HEADERS in queue is reset by RST_STREAM
Previously we did not handle the situation where RST_STREAM is
submitted against a stream while requet HEADERS which opens that
stream is still in queue.  Due to max concurrent streams limit,
RST_STREAM is sent first, and then request HEADERS, which effectively
voids RST_STREAM.

In this commit, we checks RST_STREAM against currently pending request
HEADERS in queue and if stream ID matches, we mark that HEADERS as
canceled and RST_STREAM is not sent in this case.  The library will
call on_frame_not_sent_callback for the canceled HEADERS with error
code from RST_STREAM.
2015-02-13 23:48:16 +09:00
Tatsuhiro Tsujikawa 0d2bbead9d Add test to submit PUSH_PROMISE without associated stream open 2015-02-12 23:09:01 +09:00
Tatsuhiro Tsujikawa 7d4a6aa179 Add test for submission ordering of HEADERS and its RST_STREAM 2015-02-12 21:28:20 +09:00
Tatsuhiro Tsujikawa 354de30874 Make default min frame payload size to 16K
Previously we use 16K - 9 bytes (frame header) as frame payload size
so that whole frame fits in 1 TLS record size (16K).  But it turns out
that in proxy use case, we will receive 16K payload from backend and
we have to split it into 2 odd looking frames (16K - 9 and 9), and
latter is highly inefficient.  To avoid this situation, we decided to
use min frame payload size to 16K.  Since we operates on TLS as stream
of data, we are not so much restricted in its record size.
2015-02-12 00:09:18 +09:00
Tatsuhiro Tsujikawa 6b28e033de Fix compile error and memory leak 2015-02-09 22:37:11 +09:00
Tatsuhiro Tsujikawa eec8870ac1 Fix bug that client may send PROTOCOL_ERROR upon canceled push stream
Previously we treat stream in NGHTTP2_STREAM_RESERVED state specially,
that is we don't increment or decrement streams counts if stream is in
that state.  Because of this, we don't change the stream state to
NGHTTP2_STREAM_CLOSING if stream is in NGHTTP2_STREAM_RESERVED.  But
it turns out that it causes a problem.  If client canceled pushed
stream before push response HEADERS, stream is still in
NGHTTP2_STREAM_RESERVED state.  If push response HEADERS arrived in
this state, library happily accepts it and passed to application.

With this commit, this bug was corrected.  We now change stream state
to NGHTTP2_STREAM_CLOSING even if it was in NGHTTP2_STREAM_RESERVED
state.  We now use NGHTTP2_STREAM_FLAG_PUSH to determine whether we
have to increase/decrase stream count.
2015-02-09 22:23:20 +09:00
Tatsuhiro Tsujikawa e2bbc94616 Use NGHTTP2_PROTOCOL_ERROR when peer exceeds MAX_CONCURRENT_STREAMS limit
Kudos to h2spec to find this details
2015-02-02 00:14:17 +09:00
Tatsuhiro Tsujikawa fbd9bcb00e Use _LDADD to specify libraries instead of _LDFLAGS
This is because _LDFLAGS comes before _LDADD.  If we specify a library
and another library in _LDADD depends on it, we get undefined
reference error.
2015-01-25 00:58:30 +09:00
Tatsuhiro Tsujikawa 064bfcc9d2 Fix test failure 2015-01-23 01:29:41 +09:00
Tatsuhiro Tsujikawa b685747643 Add nghttp2_submit_shutdown_notice() to start graceful shutdown
nghttp2_submit_shutdown_notice() is used to notify the client that
graceful shutdown is started.  We expect that after this call, the
server application should send another GOAWAY using
nghttp2_submit_goaway() with appropriate last_stream_id.  In this
commit, we also added nghttp2_session_get_last_proc_stream_id(), which
can be used as last_stream_id parameter.

This commit implements graceful shutdown in nghttpx.  The integration
test for graceful shutdown is also added.
2015-01-22 23:21:58 +09:00
Tatsuhiro Tsujikawa a2e4a1eb26 tests: Remove unintended debug output 2015-01-09 10:07:57 +09:00
Tatsuhiro Tsujikawa a804117c83 Fix GOAWAY handling
On reception of GOAWAY, new stream creation is disallowed regardless
of last-stream-id in GOAWAY is larger than next stream ID.
2015-01-07 22:53:43 +09:00
Tatsuhiro Tsujikawa 959d05e6f8 failmalloc: Use nghttp2_mem instead of using dlsym 2014-12-20 23:56:33 +09:00
Tatsuhiro Tsujikawa 7c0a0c495d Rename nghttp2_stream.data_item to nghttp2_stream.item and related functions
Initially, we use nghttp2_stream.data_item to refer only item with
DATA frame.  But recently we use it to refer HEADERS frame as well.
So it is better to call just item rather than data_item.  This applies
to all related functions.
2014-12-20 21:48:31 +09:00
Tatsuhiro Tsujikawa e8513b3241 Make huffman encoding faster 2014-12-19 23:22:55 +09:00
Tatsuhiro Tsujikawa 280c9dfcf3 Keep idle streams in separate list
Previously we handle idle streams as closed streams.  We only keeps
sum of closed streams and active streams under max concurrent streams
limit, idle streams gets deleted earlier than client expects.

In this change, idle streams are kept in separate list and not handled
as closed streams.  To mitigate possible attack vector to make
unlimited idle streams, we cap the number of idle streams in a half of
max concurrent streams.  This is arbitrary choice.  It may be adjusted
in the future when we have interop experience.
2014-12-13 00:14:52 +09:00
Tatsuhiro Tsujikawa c0ffed7788 Support custom memory allocator
nghttp2_mem structure is introduced to hold custom memory allocator
functions and user supplied pointer.  nghttp2_mem object can be passed
to nghttp2_session_client_new3(), nghttp2_session_server_new3(),
nghttp2_hd_deflate_new2() and nghttp2_hd_inflate_new2() to replace
standard malloc(), free(), calloc() and realloc().  nghttp2_mem
structure has user supplied pointer mem_user_data which can be used as
per session/object memory pool.
2014-12-08 00:55:55 +09:00
Tatsuhiro Tsujikawa 21b48d24e4 Remove altsvc 2014-12-07 23:11:54 +09:00
Tatsuhiro Tsujikawa 54a3209cf5 configure.ac: Rename some variables so that they follow automake convention 2014-12-01 23:14:28 +09:00
Tatsuhiro Tsujikawa 7036859823 Do not change user variable CFLAGS in configure.ac 2014-12-01 23:06:11 +09:00
Tatsuhiro Tsujikawa ca57c2f6b6 Rename NGHTTP2_GOAWAY_FAIL_ON_SEND with NGHTTP2_GOAWAY_TERM_ON_FAIL 2014-11-29 16:28:08 +09:00
Tatsuhiro Tsujikawa d75ba74bbd Return error if invalid stream_id is given to nghttp2_submit_push_promise 2014-11-29 16:17:02 +09:00
Tatsuhiro Tsujikawa 9ff1925538 Robust GOAWAY handling
This change will utilize last_stream_id in GOAWAY extensively.  When
GOAWAY is received with a last_stream_id, library closes all outgoing
streams whose stream_id > received last_stream_id.
nghttp2_on_stream_callback is called for each stream to be closed.

When GOAWAY is sent with a last_stream_id, library closes all incoming
streams whose stream_id > sent last_stream_id.
nghttp2_on_stream_callback is called for each stream to be closed.
2014-11-29 16:02:13 +09:00
Tatsuhiro Tsujikawa 382a328ead Issue connection error if client receives HEADERS with idle stream ID
If stream ID is not idle, it might be valid HEADERS.  If stream ID is
idle, it is invalid regardless stream ID is even or odd, since client
is not expected to recieve request from server.  nghttp2 library
historically allows this, but now we forbids this.
2014-11-28 01:22:57 +09:00
Tatsuhiro Tsujikawa babfa41424 Just ignore HEADERS with non-idle stream ID and not found in stream map 2014-11-28 01:01:33 +09:00
Tatsuhiro Tsujikawa b1f807abd1 Reformat lines with clang-format-3.5 2014-11-27 23:56:30 +09:00
Alexis La Goutte bac44d7ffb Fix -Werror=unused-parameter using _U_ macro 2014-11-25 17:08:09 +01:00
Tatsuhiro Tsujikawa 8e94551881 Handle idle stream in priority field 2014-11-24 15:25:19 +09:00
Tatsuhiro Tsujikawa b7c0576eb5 Make certain type of HEADERS subject to priority
We make following HEADERS under priority control:
* push response HEADERS
* HEADERS submitted by nghttp2_submit_response

Currently, HEADERS submitted by nghttp2_submit_headers is not attached
to stream.  This is because it may be used as non-final response
header and application may submit final response using
nghttp2_submit_response without checking non-final response header
transmission.
2014-11-24 15:25:19 +09:00
Tatsuhiro Tsujikawa ae93f6345c Allow PRIORITY frame at anytime.
Allowing PRIORITY frame at anytime so that PRIORITY frame to idle
stream can create anchor node in dependency tree.  In this change, we
open stream with new NGHTTP2_STREAM_IDLE state, which is linked in
session->closed_stream_head and is treated as if it is closed stream.
One difference is that if the stream is opened, we remove it from
linked list and change the state to the appropriate one.  To O(1)
removal from linked list, we change session->closed_stream_head to
doubly linked list.
2014-11-24 15:25:19 +09:00
Tatsuhiro Tsujikawa c31be5af4d Assign default priority if dep_stream in PRIORITY does not exist 2014-11-08 16:12:13 +09:00
Tatsuhiro Tsujikawa 292c01fda2 Add test to make sure that default priority is assigned 2014-11-08 11:37:53 +09:00
Tatsuhiro Tsujikawa 62ede05c09 Fix heap-use-after-free due to duplicated push of DATA item 2014-11-06 23:47:41 +09:00
Tatsuhiro Tsujikawa 9a33116526 Fix bug in priority tree
This change fixes the bug that stream is out of dependency tree if the
number of nodes in a dependency tree which we add new node to is
already maximum (NGHTTP2_MAX_DEP_TREE_LENGTH) and the number of
maximum concurrent streams is more than more than
NGHTTP2_MAX_DEP_TREE_LENGTH.
2014-11-05 00:32:16 +09:00
Tatsuhiro Tsujikawa 76800dc8e7 Remove unused functions 2014-10-30 23:31:36 +09:00
Tatsuhiro Tsujikawa 4d93dd9d91 Upate to draft-15
* Add NGHTTP2_HTTP_1_1_REQUIRED error code
* Allow transmission of WINDOW_UPDATE on reserved (remote)
* Allow reception of WINDOW_UPDATE on reserved (local)
* Treat frame larger than MAX_FRAME_SIZE as FRAME_SIZE_ERROR

ALPN identifier is still h2-14 to continue interop, since draft-14 and
-15 are binary compatible.  The new error code was added in draft-15,
but HTTP/2 allows extensions can freely add new error code, so it is
not a problem.
2014-10-30 22:40:02 +09:00
Tatsuhiro Tsujikawa 502ff24568 Avoid iterate siblings when adding/removing stream tree 2014-10-16 01:12:59 +09:00
Tatsuhiro Tsujikawa 70c0558443 Set payload length when expected SETTINGS is not received 2014-10-10 21:46:02 +09:00
Tatsuhiro Tsujikawa 80dcb565eb Check first SETTINGS strictly 2014-10-09 21:37:18 +09:00
Tatsuhiro Tsujikawa 402c262de5 Push stream to queue after effective weight was calculated 2014-10-08 22:44:02 +09:00
Tatsuhiro Tsujikawa 03c4092862 Distribute closed or blocked stream's weight to its siblings
This also means that at least one stream whose dpri is
NGHTTP2_STREAM_DPRI_TOP exists, its siblings descendants have no
chance to send streams, even if their parent stream has
NGHTTP2_STREAM_DPRI_NODATA.
2014-10-07 23:52:36 +09:00
Tatsuhiro Tsujikawa 1d138accb9 Unify DATA and other frames in nghttp2_outbound_item and save malloc() 2014-10-03 21:31:37 +09:00
Tatsuhiro Tsujikawa e20b417b84 Embed aux_data to nghttp2_outbound_item so that we can save some malloc() calls 2014-09-30 21:45:15 +09:00
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 89c3c08590 tests: Fix compiler warning 2014-09-19 00:20:54 +09:00
Tatsuhiro Tsujikawa b2f88f8fe3 Fix memory leak around stream->data_item
Previously we missed the case where stream->data_item is not deleted
and it caused leak.  Now stream->data_item is properly deleted when
session is deleted.  We decided not to delete data_item in
nghttp2_stream_free() since we need nghttp2_session to decide whether
data_item should be deleted or not there.
2014-09-17 23:16:00 +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 9b2c24ad68 tests: Remove debug output 2014-08-28 23:32:14 +09:00
Tatsuhiro Tsujikawa b4bb6a6101 Add reserved bits to header and frames
Currently reserved bit is always set to 0.  The addition of reserved
bit is for future extension.
2014-08-28 23:30:42 +09:00
Tatsuhiro Tsujikawa f34cbf9b45 tests: Include config.h 2014-08-27 23:36:57 +09:00
Tatsuhiro Tsujikawa 4c11cd0671 Add test to submit DATA frame twice
This commit adds test to submit DATA frame twice and fixes the bug
that 2nd DATA is not sent.
2014-08-25 23:46:17 +09:00
Tatsuhiro Tsujikawa 4c5c6749a0 Check buffer capacity explicitly 2014-08-25 23:12:17 +09:00
Tatsuhiro Tsujikawa dd038bf753 Fix crash when buffer was reallocated after read_length_callback
Added test for this crash.
2014-08-25 23:05:39 +09:00
Tatsuhiro Tsujikawa 0b1ab90fb8 Move frame_type parameter in front of stream_id
This commit moves frame_type parameter of
nghttp2_data_soruce_read_length_callback in front of stream_id
parameter.  The motivation is that other callback is generally put
frame related parameters first.  To make it consistent, we move
frame_type, which is frame ralted parameter, to the left.
2014-08-25 22:31:11 +09:00
Tatsuhiro Tsujikawa 82bc7198e6 Change nghttp2_session_get_stream_remote_window_size behavior
Now it returns only stream's available remote window size, without
considering connection level window size.  For connection-level window
size, nghttp2_session_get_remote_window_size() is added by this
commit.  To get old behavior of
nghttp2_session_get_stream_remote_window_size() is use
min(nghttp2_session_get_stream_remote_window_size(),
nghttp2_session_get_remote_window_size()).  The reason of this change
is that it is desirable to know just stream level window size without
taking into connection level window size.  This is useful for
debugging purpose.
2014-08-25 21:44:22 +09:00
Tatsuhiro Tsujikawa a36c4c6f5f Add nghttp2_on_begin_frame_callback
nghttp2_on_begin_frame_callback will be invoked when a frame header is
received.
2014-08-25 21:26:50 +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 3655090997 Merge branch 'window_size_control' of https://github.com/akamai/nghttp2 into akamai-window_size_control 2014-08-25 21:09:26 +09:00
Scott Mitchell 3cd08251ca Send window size API extension
Motivation:

The send window size is currently fixed by a macro at compile time.
In order for users of the library to impact the send window size they
would have to change a macro at compile time. The window size may be dynamic
depending on the environment and deployment scheme. The library users
currently have no way to change this parameter.

Modifications:

Add a new optional callback method which is called before data is sent to
obtain the desired send window size. The callback return value will be
subject to a range check for the current session, stream, and settings
limits defined by flow control.

Result:
Library users have control over their send sizes.
2014-08-24 11:32:44 -04:00
Tatsuhiro Tsujikawa bf48ef9bab Add test to check consumed size when no auto window update is enabled 2014-08-24 22:36:35 +09:00
Tatsuhiro Tsujikawa 9893ae81af Add nghttp2_bufs_realloc 2014-08-24 15:34:55 +09:00
Tatsuhiro Tsujikawa 7bfa276e96 Fix bug that NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE causes session failure
Previously returning NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE from
on_header_callback moves input offset badly and it causes header
decompression error on the subsequent frames.  This commit fix this
bug.
2014-08-24 00:50:55 +09:00
Tatsuhiro Tsujikawa bbe4f5a3d1 Allow frame submission immediately after nghttp2_submit_{request,headers,pp}
This commit makes handling of outgoing HEADERS and PUSH_PROMISE in the
same priority of other frames on the stream, so these frames are
processed in the order they are submitted.  This allows application to
submit frames to a stream returned by nghttp2_submit_{request,
headers, push_promise} immediately.  The only exception is
WINDOW_UPDATA frame, which requires nghttp2_stream object, which is
not created yet.
2014-08-17 17:31:43 +09:00
Tatsuhiro Tsujikawa 2fb750f2e3 nghttp2_check_header_value: Disallow 0x00 2014-08-02 00:30:09 +09:00
Tatsuhiro Tsujikawa 7952029752 Advertise h2-14 2014-07-31 23:34:54 +09:00
Tatsuhiro Tsujikawa b8a2bf2675 Remove END_SEGMENT flag 2014-07-31 23:05:53 +09:00
Tatsuhiro Tsujikawa 98be65a1eb Allow submission of unknown SETTINGS 2014-07-31 23:05:53 +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 0752ce6701 nghttp2_hd_deflate_bound: Take into account possible 2nd context update 2014-07-31 23:05:53 +09:00
Tatsuhiro Tsujikawa dd1850aed0 Emit minimum header table size in encoding context update 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 744ec4dba1 Don't copy static header and put static table in front of dynamic table 2014-07-31 23:05:52 +09:00
Tatsuhiro Tsujikawa 38bfbffb1b Remove HPACK reference set 2014-07-31 23:05:52 +09:00
Tatsuhiro Tsujikawa 63398f30dd Extend frame length field to 24 bits 2014-07-31 23:05:52 +09:00
Tatsuhiro Tsujikawa 57e9b94aaa Handle header table size up to UINT32_MAX 2014-07-22 22:38:18 +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 e5abc475f1 Don't send more than NGHTTP2_MAX_HEADERSLEN bytes header block 2014-07-02 22:45:38 +09:00
Tatsuhiro Tsujikawa 31de732e3b Allocate header table ringbuffer lazily
Previously in inflater we reserve new ringbuffer when table size is
changed.  This may be potentially a problem if new table size is very
large number.  When inflater is not used directly by application, this
is not a problem because application can choose the buffer size.  On
the other hand, if application uses inflater directly and it does not
have control of new buffer size (e.g., protocol dissector), then we
just fail to allocate large buffer in
nghttp2_hd_inflate_change_table_size() without actually use such huge
buffer.  This change defers the actual allocation of buffer when it is
actually needed so that we will fail when it is absolutely needed.
2014-06-22 13:39:17 +09:00
Tatsuhiro Tsujikawa 3f5e359ef4 Fix failmalloc test 2014-06-18 15:12:54 +09:00
Tatsuhiro Tsujikawa 8e0fcd3922 Add test for graceful shutdown use case 2014-06-18 12:08:12 +09:00
Tatsuhiro Tsujikawa 9294622519 Treat unknown error code as NGHTTP2_INTERNAL_ERROR 2014-06-18 11:53:32 +09:00
Tatsuhiro Tsujikawa b78a51da0e Support graceful shutdown using multiple GOAWAY
Add last_stream_id parameter to nghttp2_submit_goaway().  To terminate
connection immediately with application chosen last stream ID,
nghttp2_session_terminate_session2() was added.
2014-06-18 11:35:08 +09:00
Tatsuhiro Tsujikawa a5af621947 Change protocol ID to h2-13 2014-06-18 09:42:51 +09:00
Tatsuhiro Tsujikawa dd006f8a79 Change protocol ID to h2-lc 2014-06-12 22:51:30 +09:00
Tatsuhiro Tsujikawa 9b174bf5c9 Fix compile error with -Wshorten-64-to-32
The original patch was contributed by Alexis La Goutte
2014-06-11 23:37:16 +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 317b8baa4f Set HTTP/2 protocol id to h2-13 for now 2014-06-07 19:39:14 +09:00
Tatsuhiro Tsujikawa d4602a0991 Remove reserved field from ALTSVC frame 2014-06-07 19:10:09 +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 458ccb3681 Ignore unknown frame types
Unexpected CONTINUATION frame is handled separately as connection
error.
2014-06-07 16:30:55 +09:00
Tatsuhiro Tsujikawa 3db8935e20 Remove per-frame compression 2014-06-07 16:04:43 +09:00
Tatsuhiro Tsujikawa d113055899 nghttp2_hd: Use single buffer for an name/value pair
Previously we use 2 separate buffer for each name and value.  The
problem is we would waste buffer space for name because it is usually
small.  Also tuning buffer size for each buffer separately is not
elegant and current HTTP server practice is that one buffer for 1
name/value pair.  This commit unifies 2 buffers into 1.
2014-05-28 23:33:37 +09:00
Tatsuhiro Tsujikawa 7b9a8acc22 Add HPACK deflation API 2014-05-13 23:42:55 +09:00
Tatsuhiro Tsujikawa bc6d952361 Check max SETTINGS_HEADER_TABLE_SIZE in nghttp2_iv_check()
Hide NGHTTP2_MAX_HEADER_TABLE_SIZE from public API.  Now it is defined
as ((1u << 31) - 1) in nghttp2_frame.h, which is sufficiently big
enough.
2014-05-12 21:28:49 +09:00
Tatsuhiro Tsujikawa 2e5c7f598f Fix bug HPACK deflater does not send context update after table size change 2014-05-11 21:25:27 +09:00
Tatsuhiro Tsujikawa a93e04c6f8 tests: Add failmalloc HPACK test 2014-05-10 21:14:25 +09:00
Tatsuhiro Tsujikawa d46e13ae52 tests: Fix failmalloc tests 2014-05-10 19:40:23 +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 e8de437d5c Return new stream ID from nghttp2_submit_{request, headers, push_promise}
Previously stream ID was assigned just before HEADERS or PUSH_PROMISE
was serialized and nghttp2_submit_{request, headers, push_promise} did
not return stream ID.  The application has to check assigned stream ID
using before_frame_send_callback.  Now it is apparent that priority is
meant to DATA transfer only.  Also application can reorder the
requests if it wants. Therefore we can assign stream ID in
nghttp2_submit_* functions and return stream ID from them.  With this
change, now application does not have to check stream ID using
before_frame_send_callback and its code will be simplified.
2014-05-07 23:24:07 +09:00
Tatsuhiro Tsujikawa 43fb7f707f Fix unittest build error 2014-05-06 23:42:32 +09:00
Tatsuhiro Tsujikawa 4f027c1562 libnghttp2: Remove dependency to zlib
We inherited gzip compression API from spdylay codebase.  In spdylay,
the cost of having such API is almost free because spdylay requires
zlib for header compression.  nghttp2 no longer uses gzip to header
compression.  zlib dependency exists just for gzip compression API,
which is not an essential.  So we decided to move gzip code to under
src and remove zlib dependency from libnghttp2 itself.  As nghttp2
package, we depend on zlib to compile tools under src.
2014-05-06 23:10:50 +09:00
Tatsuhiro Tsujikawa 855f39743a Fix crash when indexed repr index=0 2014-05-01 09:06:54 +09:00
Tatsuhiro Tsujikawa 660c536275 Extend namelen and valuelen in nghttp2_nv to size_t 2014-04-30 23:08:34 +09:00
Tatsuhiro Tsujikawa d49733a5c9 Declare h2-12 for now 2014-04-25 01:33:29 +09:00
Tatsuhiro Tsujikawa 052be3296c Implement compressed DATA
The library interface supports compressed DATA.  The library does not
deflate nor inflate data payload.  When sending data, an application
has to compress data and set NGHTTP2_DATA_FLAG_COMPRESSED to
data_flags parameter in nghttp2_data_source_read_callback.  On
receiving, flags parameter in nghttp2_on_data_chunk_recv_callback
includes NGHTTP2_FLAG_COMPRESSED.  An application should check the
flags and inflate data as necessary.  Since compression context is per
frame, when DATA is seen in nghttp2_on_frame_recv_callback, an
application should reset compression context.
2014-04-25 01:27:18 +09:00
Tatsuhiro Tsujikawa ee26469cd9 Handle circular dependency
Handle the situation if a stream is told to depend on its descendant.
This is what
http://tools.ietf.org/html/draft-ietf-httpbis-http2-12#section-5.3.3
says.
2014-04-24 23:44:34 +09:00
Tatsuhiro Tsujikawa 853c9888d9 Distribute effective weight among only streams with marked as top
If stream with dpri value of no_data, we check any its descendant has
stream with dpri value of top.  If so, we have to distribute of its
portion of weight to its descendants.
2014-04-24 23:37:40 +09:00
Tatsuhiro Tsujikawa 1c1843297c priority: Add tests 2014-04-17 21:34:44 +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 ece6521d26 Check stream availability when sending ALTSVC with stream_id != 0 2014-04-10 23:27:10 +09:00
Tatsuhiro Tsujikawa 9b3d5a8be5 Harden check for submit functions
nghttp2_submit_{headers,request}: Return NGHTTP2_ERR_INVAILD_ARGUMENT
if pri_spec->type is invalid.

nghttp2_submit_push_promise: Return NGHTTP2_ERR_PROTO if issued by
client.

nghttp2_submit_altsvc: Return NGHTTP2_ERR_PROTO instead of
NGHTTP2_ERR_INVALID_STATE if issued by client.
2014-04-09 00:13:11 +09:00
Tatsuhiro Tsujikawa 8f23c0c38b Name unnamed union in nghttp2_priority_spec so that we can be C90 compatible 2014-04-05 18:40:44 +09:00
Tatsuhiro Tsujikawa c1060f0d48 Announce h2-11 2014-04-05 18:26:48 +09:00
Tatsuhiro Tsujikawa e7ad3633c7 nghttp2_data_source_read_callback: Replace eof with uint32_t *data_flags
Replace int *eof with uint32_t *data_flags so that we can easily
extend functionality if we have to (but we don't do if possible).
2014-04-05 17:59:24 +09:00
Tatsuhiro Tsujikawa a0d93e7744 Fix unit test 2014-04-05 17:55:14 +09:00
Tatsuhiro Tsujikawa 1e38ceb1cd Allow empty SETTINGS in upgrade 2014-04-04 20:23:46 +09:00
Tatsuhiro Tsujikawa ac2a8ef4a2 Fix bug that transfer stuck when stream marked as top is deferred 2014-04-03 15:48:51 +09:00
Tatsuhiro Tsujikawa ef40879b5f Refactor nghttp2_stream
Combine deferred_data and data into data_item and merge deferred_flags
into flags.
2014-04-02 22:55:49 +09:00
Tatsuhiro Tsujikawa 2685e3405f Rename NGHTTP2_DATA_PAYLOAD_LENGTH as NGHTTP2_DATA_PAYLOADLEN 2014-04-02 20:35:07 +09:00
Tatsuhiro Tsujikawa 9c4c99bf96 Adjust transmission frame buffer size to support maximum payload size 2014-04-02 20:33:01 +09:00
Tatsuhiro Tsujikawa c9f90924a9 Add flags parameter to nghttp2_on_header_callback 2014-04-02 02:10:35 +09:00
Tatsuhiro Tsujikawa b1722cbe28 Update static table 2014-04-02 01:30:50 +09:00
Tatsuhiro Tsujikawa 7877b676e3 Honor NGHTTP2_NV_FLAG_NO_INDEX in deflater and inflater 2014-04-02 01:25:44 +09:00
Tatsuhiro Tsujikawa 24cb90806d Add flags to nghttp2_nv structure
This is preliminary change for upcoming HPACK updates.  The flags are
used to determine the name/value pair is indexable or not.
2014-04-01 23:17:50 +09:00
Tatsuhiro Tsujikawa f785e56dba Implement ALTSVC frame 2014-04-01 21:47:51 +09:00
Tatsuhiro Tsujikawa b85e2ab7f7 Share stream_group weight among streams marked as top 2014-03-31 22:51:33 +09:00
Tatsuhiro Tsujikawa ab2dc5967d Replace HTTP/2.0 with HTTP/2 2014-03-30 19:26:37 +09:00
Tatsuhiro Tsujikawa 21d5986157 Fail nghttp2_submit_settings if there is pending SETTINGS frame in-flight
pending_local_max_concurrent_stream is now set in
nghttp2_session_add_settings, rather than after frame was sent.
2014-03-30 18:07:52 +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 e1eebf08fb Support DEBUG_DATA in GOAWAY again 2014-03-22 18:59:59 +09:00
Tatsuhiro Tsujikawa 01586f473d Wrap small inbound buffer by nghttp_buf 2014-03-22 18:27:38 +09:00
Tatsuhiro Tsujikawa 68b392817b nghttp2_bufs: Add chunk_keep to specify the number of buffers to keep on reset 2014-03-16 21:38:13 +09:00
Tatsuhiro Tsujikawa 2ec4b10805 Add nghttp2_buf tests 2014-03-14 21:40:14 +09:00
Tatsuhiro Tsujikawa b464cb78ac Fix tests to reflect their intent 2014-03-14 00:25:43 +09:00
Tatsuhiro Tsujikawa 1be8d1b797 inflate_header_block: Issue RST_STREAM if header decompression failed 2014-03-13 23:02:33 +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 74f899fc01 Replace NGHTTP2_MAX_FRAME_LENGTH with NGHTTP2_MAX_PAYLOADLEN 2014-03-11 02:01:08 +09:00
Tatsuhiro Tsujikawa e803c6b65e Replace NGHTTP2_FRAME_HEAD_LENGTH with NGHTTP2_FRAME_HDLEN 2014-03-11 01:55:42 +09:00