Commit graph

61 commits

Author SHA1 Message Date
Dmitri Tikhonov
6aba801d42 Release 1.18.0
- [API Change] Can specify clock granularity in engine settings.
- [BUGFIX] Pacer uses fixed clock granularity.  Since the change on
  2018-04-09, it is not necessary to try to approximate the next tick
  time in the pacer: it can use fix clock granularity specified by
  the user.
- [BUGFIX] Do not tick constantly before handshake is done.
- [BUGFIX] Do not exit tick prematurely: reuse packet with ACK.  Even
  if we cannot allocate *more* packets, we could still be able to write
  to one already allocated.
- [BUGFIX] Do not schedule pacer if there are no lost packets.
2019-01-28 15:41:28 -05:00
Dmitri Tikhonov
4d83f5bd45 Release 1.17.15
- [BUGFIX] http_client: make sure only one read per on_read() callback
  is performed in the header conversion bypass (-B) mode.
- http_client: with -E, assign random priority when stream is created.
- [OPTIMIZATION] On immediate write, place an ACK frame into the first
  buffered packet if an ACK is queued.  This reduces the number of
  standalone ACK packets.
- [OPTIMIZATION] Allow placing more than one STREAM frame from the same
  stream into an outgoing packet.  This change minimizes the number of
  buffered packets required to store several small HTTP messages by
  virtue of allowing more than one STREAM frame from HEADERS stream in
  the same packet.
- [OPTIMIZATION] Flush headers when writing to buffered packets.  This
  causes the headers to be written to the same buffered packet queue,
  thereby improving packet utilization, especially for small HTTP
  messages.
2019-01-21 09:07:02 -05:00
Dmitri Tikhonov
19f667fba5 Release 1.17.14
- [FEATURE] http_client can now collect stats: time to connect, TTFB,
  time to download, requests per seconds, and bandwidth.  See -t flag.

- [BUGFIX] http_client: -B, -K, and -r can be used at the same time.

- [BUGFIX] http_client: do not display cert chain before each request.
  Now this is only done once per connection, if the handshake is
  successful and -a option is given.

- [BUGFIX] Do not wait to dispatch on_close() after reading.  If a
  stream is scheduled to be closed after on_read() callback returns,
  close it immediately instead of waiting until the end of the tick.
  If client creates new request from on_close() event, they will be
  processed in the same tick instead of waiting for the next one.

- [BUGFIX] HEADERS stream is critical: always treat it with highest
  priority.
2019-01-16 15:13:59 -05:00
Dmitri Tikhonov
2815666c2e Update header file and changelog: release 1.17.12 2019-01-10 09:27:47 -05:00
Dmitri Tikhonov
229fce07a3 Release 1.17.11
Fix strict aliasing warning in when compiling with optimizations
2019-01-03 11:48:45 -05:00
Dmitri Tikhonov
f2450c4325 Release 1.17.10
Fix the example program to be able to use parallel connections
again.  (See the -n argument.)
2018-12-27 14:01:17 -05:00
Dmitri Tikhonov
6b58dff0c3 Release 1.17.9
[BUGFIX] Engine: reduce minumum batch size from 256 to 4
2018-12-18 15:23:07 -05:00
Dmitri Tikhonov
a37b0c967c Release 1.17.8
[BUGFIX] Fix compilation on FreeBSD and 32-bit Linux
2018-12-10 22:40:01 -05:00
Dmitri Tikhonov
18237fa49c Release 1.17.7
[BUGFIX] Do not unset PING alarm before ringing expired alarms.  This
prevented PING from ever being sent.
2018-12-03 10:34:57 -05:00
Dmitri Tikhonov
8252b0b935 Release 1.17.6
- Add failsafe: resume sending packets after some time

  The change puts a 1-second limit on the amount of time the engine
  will not send packets after some packets are delayed.  This makes
  the library robust in case the user does not unblock the engine
  explicitly using lsquic_engine_send_unsent_packets() call.

- [BUGFIX] Handle corner cases in send controller when packets are
  a) delayed or b) dropped during repackaging.

- [BUGFIX] Memory leak: destroy buffered packets during controller
  cleanup.
2018-11-29 15:26:49 -05:00
Dmitri Tikhonov
bf2c703721 Release 1.17.3
[BUGFIX] Do not send STOP_WAITING frames when using Q044
2018-11-16 11:32:34 -05:00
Dmitri Tikhonov
feecb11b46 Release 1.17.2
- [BUGFIX] Memory leak in test_frame_rw unit test.
- [BUGFIX] Parsing packets with short IETF header: do not overwrite
  flags.  (Only a problem in unit tests -- benign otherwise.)
2018-10-19 10:39:24 -04:00
Dmitri Tikhonov
1e75f9380e Release 1.17.0
- [API Change] Packet out Memory Interface (PMI) update:
  - Split PMI pool return into pmi_release and pmi_return
  - PMI callbacks take peer_ctx and is_ipv6 arguments
- [BUGFIX] Fix use-after-free when certificate is updated
- Silence gcc warning in optimized mode by performing useless
  initialization
- cmake: use the standard variable CMAKE_BUILD_TYPE instead of
  DEVEL_MODE
2018-10-16 09:03:33 -04:00
Dmitri Tikhonov
66f9afccd0 Release 1.16.0
- [API Change] Add lsquic_conn_n_avail_streams()
- [BUGFIX] only dispatch crypto stream read events if WANT_READ is on
2018-10-03 10:32:26 -04:00
Dmitri Tikhonov
0a19f39d64 Release 1.15.0
- [API Change] Add LSCONN_ST_PEER_GOING_AWAY to the list of conn statuses
- [BUGFIX] free uncompressed headers correctly when error occurs
2018-09-27 14:00:46 -04:00
Dmitri Tikhonov
3229dd1160 Release 1.14.3
- [BUGFIX] Do not abort conn on STREAM frame for a reset stream
- [BUGFIX] Drop packets that would become empty due to repackaging.
  Packets on the scheduled queue may be marked for repackaging.
  Frames such as ACK frame that are never resent are removed from
  repackaged packets.  We must check that the newly repackaged packet
  would not be empty.  If it would be, it is destroyed instead and
  the next packet on the scheduled queue is used.  Note that this
  change only affects the logic to return the next packet to be sent.
  Lost packets that are being rescheduled are already processed in
  this fashion.
- Byteswap CID before logging it - this makes it match Chrome CIDs.
  (Except Q035, which is the last little-endian GQUIC version we
  support.)
2018-09-12 16:26:19 -04:00
Dmitri Tikhonov
14e3680d6b Release 1.14.0
- [API Change] Disable packet sending if full batch cannot be sent
  If lsquic_packets_out_f() cannot send the whole batch, disable
  packet sending until lsquic_engine_send_unsent_packets() is called.
- [BUGFIX] Handle case when STREAM frame does not fit.
- [BUGFIX] Always allow incoming STREAM frames to overlap.  Peers
  may send overlapping STREAM frames even if using versions older
  than Q043.
- Custom header set fixes:
  - set "FIN reached" flag when custom header with FIN flag is
    claimed;
  - do not return custom header set for a reset stream.
2018-09-06 14:05:15 -04:00
Dmitri Tikhonov
3b55e6ae0a 1.13.0: [FEATURE, API Change] HTTP header bypass
Add ability to create custom header set objects via callbacks.
This avoids reading and re-parsing headers from the stream.

See test/http_client.c for example implementation.  (Use -B flag
to turn it on).
2018-08-28 09:59:47 -04:00
Dmitri Tikhonov
6f126d809b 1.12.4: Fix memory leaks and gcc compilation warnings 2018-08-27 13:55:06 -04:00
Dmitri Tikhonov
5f5d395b59 1.12.3: [BUGFIX] Fix duplicate STREAM frame detection 2018-08-22 16:46:31 -04:00
Dmitri Tikhonov
483646ebc3 1.12.2: Bugfix and log message improvements 2018-08-20 11:07:29 -04:00
Dmitri Tikhonov
7f2bd84c85 1.12.0: [FEATURE, API Change] Certificate verification 2018-08-17 11:44:54 -04:00
Dmitri Tikhonov
de1c35ddaf 1.11.1: [BUGFIX] Fix STOP_WAITING frame processing in the new Q044 code 2018-08-16 17:00:25 -04:00
Dmitri Tikhonov
9626cfc25b 1.11.0: [FEATURE] Add support for Q044 2018-08-15 15:06:58 -04:00
Dmitri Tikhonov
c6457e4258 1.10.2: Don't go over limit when creating delayed streams 2018-08-09 10:04:52 -04:00
Dmitri Tikhonov
ccd741616f Latest changes
- 1.10.1
- [BUGFIX]  process connections after each batch of packets is read
  This avoids a problem of accumulating a very large list of packets
  (possible when speeds are high and socket's receive buffer is large)
  and processing it all at once.
- If glibc is older than 2.17, link with rt.  This is necessary for
  clock_getres(2).
- Add version macros to lsquic.h; remove unnecessary includes.
2018-07-10 11:51:45 -04:00
Dmitri Tikhonov
cd7bc3834d [BUGFIX] allow multiple parallel connections by default
Use the original method of tracking connections by CIDs by default.
If zero-sized CID support is turned on, connections are tracked by
the address.  A new connection is not created if another connection
is using the same network address.
2018-06-13 11:10:28 -04:00
Dmitri Tikhonov
96f77e2060 [FEATURE, API CHANGE] Support zero-sized CIDs in received packets 2018-05-30 00:15:35 -04:00
Dmitri Tikhonov
e98f5deb04 Close connection properly when packet encryption fails 2018-05-24 10:55:16 -04:00
Dmitri Tikhonov
c44946ecd7 Latest changes
- [API Change] Add optional callback to call when handshake is done
- [API Change, BUGFIX] After send failure, wait until transport available
2018-05-21 15:02:33 -04:00
Dmitri Tikhonov
04468d215d Latest changes:
- [API] Expose useful lsquic_ver2str[] in lsquic.h
- [BUGFIX] Do not produce packet sequence gaps due to STREAM frame elision
2018-05-18 15:29:07 -04:00
Dmitri Tikhonov
63a83dd17a [BUGFIX] Command-line option -6 now works correctly. 2018-05-18 10:39:21 -04:00
Dmitri Tikhonov
7a9b83ff9d Latest changes
- Improve checks of number of incoming streams limit and associated
  error reporting.
- Small improvements to the recent DNS resolution code.
2018-05-18 10:24:20 -04:00
Dmitri Tikhonov
07354a9a23 DNS resolution: can specify hostname via -H or -s 2018-05-16 15:48:43 -04:00
Dmitri Tikhonov
355db7c65f Latest changes
- [BUGFIX] Frame insertion mis-ID as overlap instead of dup
- http_client: fix priority range generated by -E flag
2018-05-16 10:45:31 -04:00
Dmitri Tikhonov
97028223ac Drop support for Q041 2018-05-09 14:43:22 -04:00
Dmitri Tikhonov
052a1c28ad Drop support for versions Q037, Q038, and Q042 2018-05-09 14:01:46 -04:00
Dmitri Tikhonov
c95974e91b [FEATURE] Add support for Q043 2018-05-09 08:57:43 -04:00
Dmitri Tikhonov
be4cfad023 [FEATURE] Add support for Q042 2018-05-04 14:00:34 -04:00
Dmitri Tikhonov
4b332c36d1 Latest changes
- Remove comment: MSPC is obsolete (no code changes)
- Prog: use lsquic_str2ver() when processing -o version flag
- Remove unused CTIM and SRBF transport parameters
- Disable QUIC versions Q037 and Q038 by default
- Fix Windows compilation by including compat header file in lshpack.c
- Address warnings produced by newer versions of gcc
- Future-proof: turn off -Werror
2018-05-04 11:53:50 -04:00
Dmitri Tikhonov
881272bb24 Fix: make lsquic_conn_quic_version() available 2018-05-02 13:55:11 -04:00
Dmitri Tikhonov
bea6482295 Latest changes:
- Switch to using ls-hpack 1.1
- [BUGFIX] Do not ignore stream resets after receiving FIN
2018-05-02 09:42:32 -04:00
Dmitri Tikhonov
bf6b47adbf HPACK: do not allow header block to end with table size update 2018-04-27 14:36:21 -04:00
Dmitri Tikhonov
130d542a00 Fix: conn is tickable if it wants to send a connection-level frame 2018-04-25 11:42:51 -04:00
Dmitri Tikhonov
aa0d8cfff0 Latest changes
- Do not create gap in sent packnos when squeezing delayed
  packets.
- sendctl checks for all unacked bytes, not just retx bytes.
- connections with blocked scheduled packets are not tickable
  for sending.
2018-04-25 10:58:55 -04:00
Dmitri Tikhonov
bdba46fd00 Latest changes:
- Fix busy loop: tickable must make progress.  When connection is
  self-reporting as tickable, it must make progress when ticked.  There
  are two issues:
    1. If there are buffered packets, the connection is only tickable if
       they can be sent out.
    2. A connection is tickable if there are streams on the servicing
       queue.  When the tick occurs, we must service the stream
       independent of whether any packets are sent.
- Fix assertion in pacer which can be incorrect under some
  conditions.
- cmake: do not turn on address sanitizer if in Travis.
2018-04-23 16:12:38 -04:00
Dmitri Tikhonov
5296a94ba2 Fix bug in lsquic_engine_connect() exposed by recent changes. 2018-04-20 15:19:44 -04:00
Dmitri Tikhonov
82f3bcef32 Latest changes
- [BUGFIX] Add connection to Tickable Queue on stream write
- cmake: use MSVC variable instead of trying to detect
- engine: improve connection incref/decref logging
- stream: don't ignore errors that may occur on triggered flush
- connection: remove obsolete method
- engine: indicate connection as tickable if previous call went
  over threshold
2018-04-19 13:47:37 -04:00
Dmitri Tikhonov
e8bd737db4 [API Change, OPTIMIZATION] Only process conns that need to be processed
The API is simplified: do not expose the user code to several
queues.  A "connection queue" is now an internal concept.
The user processes connections using the single function
lsquic_engine_process_conns().  When this function is called,
only those connections are processed that need to be processed.
A connection needs to be processed when:

    1. New incoming packets have been fed to the connection.
    2. User wants to read from a stream that is readable.
    3. User wants to write to a stream that is writeable.
    4. There are buffered packets that can be sent out.  (This
       means that the user wrote to a stream outside of the
       lsquic library callback.)
    5. A control frame (such as BLOCKED) needs to be sent out.
    6. A stream needs to be serviced or delayed stream needs to
       be created.
    7. An alarm rings.
    8. Pacer timer expires.

To achieve this, the library places the connections into two
priority queues (min heaps):

    1. Tickable Queue; and
    2. Advisory Tick Time queue (ATTQ).

Each time lsquic_engine_process_conns() is called, the Tickable
Queue is emptied.  After the connections have been ticked, they are
queried again: if a connection is not being closed, it is placed
either in the Tickable Queue if it is ready to be ticked again or
it is placed in the Advisory Tick Time Queue.  It is assumed that
a connection always has at least one timer set (the idle alarm).

The connections in the Tickable Queue are arranged in the least
recently ticked order.  This lets connections that have been quiet
longer to get their packets scheduled first.

This change means that the library no longer needs to be ticked
periodically.  The user code can query the library when is the
next tick event and schedule it exactly.  When connections are
processed, only the tickable connections are processed, not *all*
the connections.  When there are no tick events, it means that no
timer event is necessary -- only the file descriptor READ event
is active.

The following are improvements and simplifications that have
been triggered:

    - Queue of connections with incoming packets is gone.
    - "Pending Read/Write Events" Queue is gone (along with its
      history and progress checks).  This queue has become the
      Tickable Queue.
    - The connection hash no longer needs to track the connection
      insertion order.
2018-04-09 09:39:38 -04:00
Dmitri Tikhonov
da710addee Update CHANGELOG, a few changes 2018-04-02 15:16:01 -04:00