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CHANGELOG
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2024-12-16
- 4.1.0
- Update to ls-qpack v2.6.0 to fix a infinite loop.
- Add lsquic_engine_get_conns_count() API
- Updated ea_generate_scid() API
- Fix retry packet SCID generation to follow engine API.
- Fix QUICv2 header protection key when retry packet is involved.
2024-09-23
- 4.0.12
- Fix stream WANT_WRITE flag that causes busy looping.
2024-09-09
- 4.0.11
- Fix assert failure related to splitting a large packet.
2024-07-02
- 4.0.10
- Fix server initial packet padding.
- Fix a handshake failure corner case due to packet corruption.
2024-06-12
- 4.0.9
- Fix bpq_count (issue #504).
2024-03-12
- 4.0.8
- Fix RETIRE_CONNECTION_ID frame abuse.
- Fix some assert failures.
2024-02-28
- 4.0.7
- Fix overly strict 0-RTT packet DCID validation.
- Update docker build.
2024-02-23
- 4.0.6
- Fix ACK handling.
- Do not apply congestion control to CONNECTION_CLOSE frame.
2024-02-07
- 4.0.5
- Fix CPU spinning due to STREAM_BLOCKED frame.
2024-01-08
- 4.0.4
- Fix DCID validation.
- Fix CPU spinning due to pending STREAM_BLOCKED frame.
2023-12-25
- 4.0.3
- Fix session resumption bug introduced in 4.0.2.
2023-12-19
- 4.0.2
- More strict RFC compliance.
- Minimize packet generated when send STREAM_BLOCKED frame
- Fix memory management bugs.
- Fix memory leak in unit tests.
2023-05-14
- 4.0.1
- Fix send_ctl bug.
- Make logid consistent
- Reduce memory usage for storing CIDs.
2023-03-14
- 4.0.0
- Add support for QUICv2 (RFC9369).
- Add support for version negotiation (RFC9368).
- Retry packet for address validation.
- Improve handshake under high packet loss/corruption.
- Improve QUIC interop results
2023-01-26
- 3.3.1
- Fix blocked header encoding stream due to connection flow control congestion.
- Fix qeh_write_headers bug for Windows.
- Fix corner case for packet resizing.
2023-01-04
- 3.3.0
- Improve path validation logic to avoid sending padded packet to unverified
peer, follow 3X anti-amplification rule.
- Optimize application callback when STOP_SENDING frame is received.
- Improve new connection callback logic.
- Improve handling of a closed connection.
- Update BoringSSL to the most recent version.
- Fix memory leaks in gquic handshake and packet handling.
- Update ls-qpack to 2.5.1, ls-hpack to 2.3.1 to address compiler warnings
2022-10-20
- 3.2.0
- Update ls-qpack to 2.5.0 to address a decoder bug
- Assertion failure if poison packet was acked
- Fix packet_in pool memory leak
2022-08-16
- 3.1.2
- Update ls-qpack to 2.4.0 to address a use-after-free bug
- Address a few corner cases that trigger assert failures.
- Properly handle unexpected large packet for gQUIC.
- Fix memory leak in shared hash interface
- Fix IPv6 MTU detection
- Fix wrong size used in packet regeneration.
2022-05-13
- 3.1.1
- Fix memory leak in processing stream frames (isse #368)
2022-05-06
- 3.1.0
- Better handling of transport parameter max_table_capcity < 32
- Fix NULL pointer dereference in handshake
- Fix 0-RTT transport parameter validation (issue #367)
- Remove unnecessary debug log to avoid NULL pointer dereference
- Tick connection on datagram write (pull #314)
- Do not dispatch write event for FINISHED stream
- Tweaks for CMake configuration (pull #354 #369 #370 #373 #374)
- Update ls-qpack to 2.3.0
2022-01-10
- 3.0.4
- Fix overly strict assert()
- Do not reset path MTU due to three lost_mtu_probe
- Fix handshake failure due to too many realy data
- Better build support for Windows platform
- Update ls-qpack to 2.2.3
2021-09-30
- 3.0.3
- Generate ACK for DATAGRAM frame while avoid RETX (issue #312 #325).
- Fix BBR end of startup phase detection (issue #328).
- Fix HTTP/3 v1 retry handling (issue #332)
- Fix memory leak when reset dcid (issue #333)
- Fix double decrement for ifc_active_cids_count (#334)
- Fix uninitialized value in frame_reader/frame_writer (#316)
- Remove a few overly strict asserts.
2021-06-16
- 3.0.2
- Do not timeout connection if peer sends PING frames.
- Do not assert for MTU probe packet when cancel a path.
2021-06-16
- 3.0.1
- Only force TICK_CLOSE flag after received CONNECTION_CLOSE frame. (issue #292 #281)
- Avoid mismatch in packet parsing. (issue #262)
- Remove unnecessary shi_delete call.
2021-06-02
- 3.0.0
- Enable HTTP/3 v1 by default, drop draft 34.
- Prevent connection timeout when client does not send PING frame.
- Close connection ASAP after recieve CONNECTION_CLOSE (issue #284)
- Do not assert() when decode a trailer.
- Properly handle GOAWAY frame, do not close the last acknowledged stream.
2021-04-20
- 2.30.2
- Update ls-hpack to 2.3.0 to address dynamic table size limit (issue #260).
2021-04-16
- 2.30.1
- Fixed an unintialized data member for handling pushed headers.
- Added a new status code for version negotiation failure.
- Fixed a few compliance issues found by h3spec.
- Addressed high CPU usage when transport cannot send pending packets.
2021-04-12
- 2.30.0
- Added support for sending/receiving multiple headers to address the
case related to "100 continue" header handling.
- Addressed high CPU usage for a GOAWAY connection before sending
CONNECTION_CLOSE.
- Addressed SIGFPE due to zero pacing rate. (ISSUE #254).
- Fixed a minor issue related to multi-paths.
2021-03-31
- 2.29.6
- Documentation: describe lsquic internals ("guts").
- Two more fixes to compliance issues found by h3spec.
- Truncate, don't abort, SCIDs larger than 16 bytes (PR #244).
- Several small internal improvements and space optimizations.
2021-03-17
- 2.29.5
- Fix a few issues detected by h3spec for better compliance with HTTP/3
standard.
2021-03-08
- 2.29.4
- [BUGFIX] Infinite loop in stream: returned HQ frame can be at any
point on the list.
- [BUGFIX] Fail push promise immediately if STREAM_NOPUSH is set.
2021-03-03
- 2.29.3
- [BUGFIX] Do not send RESET_STREAM if writing to stream is already
finished.
- perf_client: wait for all ACKs before exiting.
- Improve how generated RESET_STREAM is logged.
- Fix compilation in different combos of adv_tick/conn_stats flags.
- Move qpack warning disablement into src/liblsquic/CMakeLists.txt.
2021-02-23
- 2.29.2
- Fix regression in gQUIC server: bug #234.
2021-02-18
- 2.29.1
- Make it possible to build the library and unit tests without
libevent.
- Build all command-line utilities in bin/
- Add perf_client and perf_server command-line utilities to test
performance according to the "perf" protocol.
2021-02-10
- 2.29.0
- [FEATURE] QUIC and HTTP/3 Internet Draft 34 support and v1 support.
The latter is turned off by default.
- Drop support for ID-28 and ID-32.
- [BUGFIX] IETF QUIC mini conn receive history (trechist): allow
unlimited inserts by dropping smallest elements.
- [BUGFIX] gQUIC: set STTL to correct value, issue #226.
- [BUGFIX] Account for poison packet gap when MTU probe was too large.
2021-02-03
- 2.28.0
- [API] lsquic_ssl_sess_to_resume_info() is the new way to get
session info.
- [API] Add user pointer to ea_generate_scid callback.
- [API] Add lsquic_dcid_from_packet() -- a fast function to parse
out DCID.
- [API] Add es_max_batch_size to control outgoing packet batch size.
- [BUGFIX] Disallow sending of header while promise is being written.
- [BUGFIX] Flush stream when buffered bytes exhaust stream cap.
- [BUGFIX] Deactivate HQ frame if writing push promise fails.
- Perform sanity check on peer transport parameters and fail the
handshake if some flow control limits are too low. This can be
turned off, see es_check_tp_sanity.
- http_server: fix how requests are read in "hq" mode.
2021-01-27
- 2.27.6
- [BUGFIX] Replace dispatch read/write events assertion with a check.
- [BUGFIX] gQUIC connection close: there is no HEADERS stream without
HTTP flag, see issue #220.
- http_client, http_server: add hq protocol support and other flags
for use with QUIC Interop Runner.
- Fix: use IP_PMTUDISC_PROBE (not IP_PMTUDISC_DO) on Linux to set
Don't-Fragment flag on outgoing packets.
- Fix send_packets_one_by_one on Windows platform when sending
multiple iovs, see issue #218.
- Exit echo_client on Windows immediately, see issue #219.
2021-01-18
- 2.27.5
- [BUGFIX] Assertion in send controller when path validation fails.
- [BUGFIX] Assertion in BBR when sending out-of-order packets is
detected.
- [BUGFIX] Drop overflow receive history ranges when cloning.
- Log correct size of the incoming packet.
- Fix internal stream function.
2021-01-13
- 2.27.4
- [API] Add lsquic_conn_get_sni(), fixes issue #203.
2021-01-08
- 2.27.3
- [BUGFIX] gQUIC: do not destroy critical streams when connection is
closed. See issue #201.
- [BUGFIX] Drop #if LSQUIC_CONN_STATS from lsquic.h. See issue #211.
- [BUGFIX] Challenge cancellation when path validation fails.
- [BUGFIX] Do not send FIN if RST is scheduled to be sent on a stream.
- [BUGFIX] gQUIC's is_tickable() when connection is closing.
- [BUGFIX] Q050 processing of GOAWAY frames.
2021-01-06
- 2.27.2
- [BUGFIX] Memory corruption in receive history copy-ranges function.
2021-01-06
- 2.27.1
- [API] New knob to set outgoing packet batch size.
- Aborted connection now become tickable immediately.
- Abort connection when HTTP/3 frame cannot be opened (can only happen
when malloc fails).
2020-12-31
- 2.27.0
- [API] Remove keylog callbacks. See issue #188.
- Add a bit more ALPN logging.
2020-12-23
- 2.26.2
- [BUGFIX] Do not drop incoming data when STOP_SENDING is received.
- [BUGFIX] Receipt of STOP_SENDING should not cause read-reset.
- [BUGFIX] Allow stream writes after receiving RESET.
- [BUGFIX] Typo in stream: ANDing enum with wrong flag.
- [BUGFIX] Reset elision: do not use zero as special stream ID value,
for zero is a valid stream ID in IETF QUIC.
- [API] Add optional on_conncloseframe_received() callback.
- Use zero error code in RESET stream sent in response to STOP_SENDING.
2020-12-17
- 2.26.1
- [BUGFIX] Migration corner cases: drop or pad over path challenge
and response frames when necessary.
- Fix stream unit test.
2020-12-09
- 2.26.0
- [OPTIMIZATION] Adjust packet reordering threshold when spurious losses
are detected.
- [API] Pass pointer to local sockaddr to ea_get_ssl_ctx() callback.
2020-12-04
- 2.25.0
- [API, FEATURE] Add es_delay_onclose option to delay on_close until all
data is ACKed. Use new function lsquic_stream_has_unacked_data() to
learn whether peer acknowledged all data written to stream.
- [API] Add optional on_reset() stream callback to get notifications
when RESET or STOP_SENDING frames are received.
- [BUGFIX] On STOP_SENDING, make conn tickable is _writeable_, not
readable.
2020-11-24
- 2.24.5
- [FEATURE] Improve Delayed ACKs extension and turn it on by default.
- Limit receive history to a finite amount of memory.
2020-11-18
- 2.24.4
- [BUGFIX] Check whether ECN counts are set in ACK struct before using
them.
- [BUGFIX] Calculate TLP timer correctly when only one packet is in
flight.
- [BUGFIX] Min RTO delay is 200 milliseconds, not 1 second.
- [BUGFIX] Memory leak in QPACK decoder handler: discard hset when
necessary.
- Allow retired and drained CIDs to be reused after a timeout.
2020-11-11
- 2.24.3
- [BUGFIX] Get rough RTT estimate on receipt of Handshake packet.
This prevents BBR on the client from miscalculating pacing rate,
slowing down sending of ACK packets.
- [BUGFIX] Packets sent during handshake are app-limited.
- [BUGFIX] Bandwidth sampler starts in app-limited mode.
- [BUGFIX] Memory leak: free QPACK handler context in stream dtor.
- Logging improvements.
2020-11-05
- 2.24.2
- [BUGFIX] Allow peer to migrate when its SCID is zero-length.
- [BUGFIX] PADDING size calculation: only one Short packet can be
coalesced. (This should have been part of the fix in 2.24.1).
- Abort connect if received NEW_CONNECTION_ID but current DCID is
zero-length.
- Improve log messages
2020-11-04
- 2.24.1
- [API] Allow use of ea_get_ssl_ctx() on the client (optional). PR #186.
- [BUGFIX] Expand datagram with ack-eliciting Initial to 1200 bytes
after connection promotion.
- [BUGFIX] Discard CRYPTO frames from lower encryption levels after
connection promotion.
- [BUGFIX] Cancel path response if path could not be initialized.
2020-10-28
- 2.24.0
- [FEATURE] QUIC and HTTP/3 Internet Draft 31 support. Drop ID-30
and ID-31 support.
- [BUGFIX] Divide-by-zero in newly enabled conn stats code when no
packets were sent.
- [BUGFIX] Memory leak in gQUIC client when server hello cannot be
parsed.
- [BUGFIX] Server Initial packet size calculation.
- Log user-agent and CONN_CLOSE reason when peer reports error.
- Example programs: Specify ALPN for echo and md5 clients and servers
(issue #184).
- Example programs: Don't add "QUIC_" prefix to lines in keylog file
(issue #185).
- http_server: Fix fd leak in preadv mode; fix preadv() usage when
reading from disk.
2020-10-22
- 2.23.3
- [BUGFIX] Update packetization threshold when writing to stream
after packet size is reduced following an RTO.
2020-10-21
- 2.23.2
- Add QPACK stats collection and experimentation mode, see the new
es_qpack_experiment setting.
- Log busy connection stats every second using the new "conn-stats"
log module.
- Log about skipping only once.
- Update HTTP/3 greased frame type formula.
- Use ls-qpack v2.2.1.
2020-10-13
- 2.23.1
- [FEATURE] IETF Client 0-RTT support.
- [BUGFIX] Do not schedule MTU probe on first tick.
- [BUGFIX] Parsing DATAGRAM frame.
- [BUGFIX] If push promise fails, do not invoke hset destructor.
- [BUGFIX] Client: When connections are IDed by port number, check DCID.
Fixes issue #176.
- [BUGFIX] Regression introduced in 2.22.0: use correct number of
PNSs for IETF mini conn during promotion.
- Revert the 2.22.1 lsquic_is_valid_hs_packet change. All that was
necessary is a change to the way we call it in lsquic_engine. No
change to the function itself is required.
2020-10-08
- 2.22.1
- [BUGFIX] Function that checks validity of handshake packets.
2020-10-07
- 2.22.0
- [FEATURE] Extensible HTTP Priorities (HTTP/3 only).
- [FEATURE] Add conn context to packet-out memory interface (PR #175).
- [BUGFIX] gQUIC proof generation: allocate buffer big enough for
signature (issue #173).
- [BUGFIX] Make library thread-safe: drop use of global variables
(issue #133, issue #167).
- [BUGFIX] Deactivate only *recent* HQ frame, not any HQ frame.
- [BUGFIX] gQUIC server: associate compressed cert with SSL_CTX,
instead of keeping them in a separate hash, potentially leading
to mismatches.
- [BUGFIX] Stream data discard infinite loop: break on FIN.
- cmake: add install target via -DCMAKE_INSTALL_PREFIX (PR #171).
- Support randomized packet number to begin a connection.
- Mini and full IETF connection size optimization.
- http_client: specify HTTP priorities based on stream conditions.
2020-09-29
- 2.21.0
- [FEATURE] QUIC and HTTP/3 Internet Draft 31 support.
- [API] Let user generate Souce Connection IDs.
- [FEATURE] Allow building lsquic as shared library.
- [OPTIMIZATION] Receive history: use a single contiguous memory
block for everything.
- Deprecate QUIC versions ID-27 and ID-30.
2020-09-25
- 2.20.2
- [BUGFIX] Memory leak: free pushed promise when refcnt is zero.
- [BUGFIX] Memory leak in IETF full conn dtor: cleanup closed IDs sets.
2020-09-23
- 2.20.1
- [BUGFIX] Typo in new "validate peer addr by DCID" code. It is
a benign bug (works either way), but better to fix it.
- Simplify Stream Priority Iterator (SPI).
- Minor documentation updates.
2020-09-15
- 2.20.0
- [FEATURE] QUIC and HTTP/3 Internet Draft 30 support.
- [FEATURE] Unreliable Datagram Extension support.
- [FEATURE] Adaptive congestion controller.
- [BUGFIX] Do not send MAX_STREAM_DATA frames on crypto streams.
- [BUGFIX] Fail with CRYPTO_BUFFER_EXCEEDED when too much CRYPTO
data comes in.
- [BUGFIX] Spin bit is now strictly per path; value is reset on
DCID change.
- [BUGFIX] Check that max value of max_streams_uni and
max_streams_bidi TPs is 2^60.
- [BUGFIX] Close IETF mini conn immediately if crypto session
cannot be initialized.
- Deprecate ID-28 (no browser uses it): it's no longer in the
default versions list.
- New programs duck_server and duck_client that implement the
experimental siduck-00 protocol. They quack!
- IETF crypto streams: don't limit ourselves from sending.
- Command-line programs: turn off QL loss bits if -G is used, as
Wireshark cannot decrypt QUIC packets when this extension is used.
- Turn all h3 framing unit tests back on.
- Fix malo initialization when compiled in no-pool mode.
2020-09-08
- 2.19.10
- [FEATURE] Add lsquic_stream_pwritev(). This function allows one to
reduce the number of system calls required to read a file from disk
by using lsquic_stream_pwritev() together with preadv(2).
- [BUGFIX] When stream is reset, it is writeable -- let user collect
the error.
- [BUGFIX] Calculate correct conn flow control if reading ends early.
- [BUGFIX] Remove stream from read and write queues on internal
shutdown. This is a regression introduced in 2.19.7.
- [BUGFIX] Swapped arguments in IETF RESET_FRAME generation.
- Turn off mini conn history when compiling with Visual Studio; this
allows the project to compile on Windows again.
- http_client: Add -3 flag to stop reading from streams early; code
cleanup.
- Don't use -Werror.
2020-09-02
- 2.19.8
- [FEATURE] Update the timestamp extension to latest version.
- [FEATURE] Cope with appearance of ECN blackholes.
- [OPTIMIZATION] return packno offset and size when header is generated.
- [BUGFIX] ignore old ACK frames in mini conns.
- [BUGFIX] Mark initial server path as initialized.
- [BUGFIX] Do not merge ACK if ECN counts do not match.
- Turn incoming packet number history in mini conn back on.
- Record mini conn event history again when compiled in debug mode.
- IETF mini conn: log when ACK is queued.
- Clean up and refactor code in several places.
2020-08-26
- 2.19.7
- Handle ECT-CE event: issue a loss event.
- Log the fact that we ignore SETTINGS_MAX_HEADER_LIST_SIZE.
- Use Max Push ID in GOAWAY frame to cancel promises.
- Add support for HTTP/3 CANCEL_PUSH frame.
- lsquic_stream_is_pushed: streams without headers are never pushed.
- [BUGFIX] Regression in lsquic_stream_shutdown_internal: now it shuts down.
- Improve logic whether to generate CONNECTION_CLOSE.
2020-08-20
- 2.19.6
- Don't process incoming ECN marks if ECN is not enabled.
- Schedule ACK when incoming packet is marked with CE.
2020-08-11
- 2.19.5
- [BUGFIX] Generate frame record when moving an ACK from one buffered
packet to another.
2020-08-06
- 2.19.4
- [BUGFIX] Do not return an oversize MTU probe to connection twice.
- [FEATURE] Delayed Acks updated to latest draft. Still experimental.
- Minor code cleanup in IETF full connection.
2020-08-04
- 2.19.3
- [BUGFIX] Regression in 2.19.1 that breaks Q050
2020-07-30
- 2.19.2
- [BUGFIX] Do not reduce PLPMTU size by network overhead.
- [BUGFIX] Windows build.
2020-07-29
- 2.19.1
- [FEATURE] DPLPMTUD support. IETF connections now search for the
maximum packet size, improving throughput.
- [DEBUG] Record event in stream history when on_close() is called
in dtor.
2020-07-22
- 2.18.2
- [BUGFIX] Send prediction: lone path challenges do not get squeezed out
- Fix crash in http_client: now -K and -B can be used simultaneously
2020-07-14
- 2.18.1
- [FEATURE] Implement the "QUIC bit grease" extension.
- [BUGFIX] Selecting CID used for logging on client.
- [BUGFIX] Header protection assertion.
- [BUGFIX] Server: enable SSL key logging when cert lookup callback
is not set.
- Remove some dead code.
2020-07-06
- 2.18.0
- [API] Rename "0-RTT" to "session resumption." In IETF QUIC, "0-RTT"
always refers to early data, meaning a request that the server can
reply to in the very first return flight. A more appropriate name
for what we support on the client site is "session resumption," which
is standard TLS terminology. Later, when we add support for 0-RTT
(early data), we can use the 0-RTT terminology again, this time in
proper context.
- [BUGFIX] Do not set certificate callback if ea_lookup_cert is NULL.
- [BUGFIX] Make connection tickable when it's marked as closed.
- [BUGFIX] Fail certificate lookup if SNI is not present in HTTP mode.
- Several documentation fixes and improvements.
- Minor code cleanup.
2020-06-24
- 2.17.2
- [BUGFIX] Infinite loop in stream: advance read offset when discarding
data.
- [OPTIMIZATION] Header protection: only initialize cipher once.
- [OPTIMIZATION] Batch header protection application.
2020-06-18
- 2.17.1
- [FEATURE] QUIC and HTTP/3 Internet Draft 29 support.
- [BUGFIX] Check that scheduled packets are also sendable when
calculating a connection's "tickable" property.
- [BUGFIX] Don't count scheduled packets as in-flight when pacer is
checked on tick.
- gQUIC: delay calling on_new for pushed stream until headers are
available.
- Allow nested calls to lsquic_engine_connect().
2020-06-15
- 2.16.3
- [OPTIMIZATION] Stash up to two reordered packets in IETF mini conn
instead of dropping them.
- [BUGFIX] Crash: check decrypt context before using it. This regression
was introduced in 2.16.2.
2020-06-12
- 2.16.2
- [BUGFIX] ID-28: do not use TLS middlebox compatibility mode in
ClientHello. This change requires using a newer version of BoringSSL.
- [BUGFIX] Free connections in Advisory Tick Time Queue in engine dtor.
- [BUGFIX] IETF QUIC client: narrow migration check to a single path.
- [BUGFIX] NULL dereference: set function pointers for alarm for path
challenges 2 and 3.
- [BUGFIX] HTTP/3 headers may be followed immediately by trailers.
- [BUGFIX] Log messages when SCID changes.
2020-06-09
- 2.16.1
- [FEATURE] Use "no-progress timeout" after which connection is closed.
- [BUGFIX] Select new SCID when current SCID is retired.
- [BUGFIX] Don't warn about dropped Initial packet sequence gaps during
mini/full handoff.
- [BUGFIX] Send correct conn error when HTTP/3 frame is truncated.
- [BUGFIX] Mini conn: consider amplification when deciding to return
TICK_SEND.
- [BUGFIX] Don't double-count tag length in amplification logic.
- [BUGFIX] Don't squeeze out lone path challenges.
- [BUGFIX] Log messages dealing with scheduled packet queue squeezing.
- [BUGFIX] don't wipe current path if no path challenge responses
come back.
- [BUGFIX] When path is reset, don't lose path_id which is used for
logging.
- Downgrade flow control violations to info log level from warnings.
- Fix connection cap extra check, avoid checks in nested calls.
- Fix some unit tests when extra checks are enabled.
- Use ls-hpack 2.2.1.
- Turn off unconditional extra checks for IETF clients.
- Extra checks: don't verify sent size of hello packets. Client
changes DCID length and this check will fail.
2020-06-03
- 2.16.0
- [API] Use lsxpack_header v206.
- [FEATURE] Windows supported.
- [BUGFIX] Fix uninitialized variable use in client (regression in
2.15.0).
- Use ls-hpack 2.2.0.
- Use ls-qpack 2.2.0.
- Sample programs: fix the way maximum number of packets is
calculated.
- Remove some dead code.
2020-05-27
- 2.15.0
- [FEATURE] QUIC and HTTP/3 Internet Draft 28 support.
- [BUGFIX] Ignore Retry packets after other packets are decrypted
successfully.
- [BUGFIX] Transport parameter decoding: CID no longer has 4-byte
length minimum.
- http_client: fix and optimize lsxpack_header allocator.
- Drop support for Internet Draft 25.
2020-05-19
- 2.14.8
- Support Android.
- Rerrange tree: move command-line examples into bin/ and unit
tests into tests/ from test/unittests/.
2020-05-12
- 2.14.7
- [BUGFIX] ALPN-to-version mapping: do not skip h3-Q050.
- [BUGFIX] Frame reader: skip headers if target stream is closed.
2020-05-06
- 2.14.6
- [BUGFIX] Fix amplification mitigation in 0-RTT case.
- [BUGFIX] IETF mini connection should not tickable if cannot send
a packet due to amplification.
- [BUGFIX] Fail if active_connection_id_limit TP is smaller than 2.
- [BUGFIX] Qlog server certificates for IETF QUIC connections.
- [BUGFIX] Uninitialized struct padding usage in tokgen (benign).
- [BUGFIX] Incorrect argument to shi_lookup() (benign).
2020-04-29
- 2.14.5
- [BUGFIX] In coalesced datagram, ignore packets whose CID does not match.
- [BUGFIX] Frame reader: skip headers if target stream is not found.
- [BUGFIX] Log message in QPACK decoder handler.
2020-04-24
- 2.14.4
- [BUGFIX] Heed es_rw_once for pushed HTTP/3 streams.
- [BUGFIX] IETF client: set correct flags on bidirectional streams.
- [BUGFIX] Generate Cancel Stream QPACK instructions for abandoned
streams.
- [BUGFIX] Do not call header callbacks after stream is closed.
- Use ls-qpack 2.1.1
2020-04-15
- 2.14.3
- [BUGFIX] gQUIC: pass correct stream to hsi_create_header_set() callback.
- [BUGFIX] Use ls-hpack 2.1.1
- Improve stream code readability.
- Use ls-qpack 2.0.5
2020-04-08
- 2.14.2
- [BUGFIX] Use ls-qpack 2.0.4
- [BUGFIX] Honor max packet size on the client and when path changes.
- http_server: fix prepare_decode() function.
2020-04-07
- 2.14.1
- [BUGFIX] Place connections on tickable queue when sending is reenabled.
- [BUGFIX] A connection is tickable if it has unsent packets.
- [BUGFIX] Heed peer's max_packet_size transport parameter.
2020-03-30
- 2.14.0
- [API] Use lsxpack_header structure to send HTTP headers.
- [OPTIMIZATION] nocopy's readable_bytes() function.
- http_server: fix typo in error message
- Use ls-hpack 2.1.0.
- Use ls-qpack 2.0.0.
2020-03-23
- 2.13.3
- [BUGFIX] ACK ping-pong: TIMESTAMP frame is not to be acked.
2020-03-13
- 2.13.2
- [BUGFIX] Use of new lsxpack_header API's hsi_prepare_decode().
2020-03-12
- 2.13.1
- [API] Use lsxpack_header structure to process incoming headers.
- [BUGFIX] Fix assertion when zero-padding Initial packet.
- [BUGFIX] Use idle timeout before we learn of peer's value.
- Use ls-hpack 2.0.1 -- has lsxpack_header changes.
- Use ls-qpack 0.14.0 -- new, common with ls-hpack, XXH seed (not
used yet).
- Code cleanup: prefix exported functions with "lsquic_".
2020-03-02
- 2.12.0
- [FEATURE] QUIC timestamps extension.
- [API] New: ea_alpn that is used when not in HTTP mode.
- [BUGFIX] SNI is mandatory only for HTTP/3 and gQUIC.
- [BUGFIX] Benign double-free -- issue #110.
- [BUGFIX] Printing of transport parameters.
2020-02-24
- 2.11.1
- [FEATURE] QUIC and HTTP/3 Internet Draft 27 support.
- [FEATURE] Add experimental delayed ACKs extension.
- Drop support for Internet Draft 24.
- Code cleanup.
2020-02-14
- 2.10.6
- [BUGFIX] HTTP/3 framing: don't misinterpret rare occurence as error.
- [BUGFIX] Send gap warning due to missing poisoned packet.
- Stream unit test for scenario in issue #106.
2020-02-13
- 2.10.5
- [BUGFIX] BBR: call cci_sent() with correct arguments and at correct
time.
- Refactor transport parameters module.
- Minor code cleanup.
2020-02-11
- 2.10.4
- [BUGFIX] Send HANDSHAKE_DONE only after Finished is received.
- [BUGFIX] Don't treat garbage UDP padding as library error; ignore
it instead.
- [BUGFIX] Fix compilation on FreeBSD (missing header).
- Code cleanup: remove unnecessary #includes.
2020-01-31
- 2.10.3
- [BUGFIX] Cancel path responses and challenges on old path when
switching to new path
- Logging network path information.
2020-01-30
- 2.10.2
- [BUGFIX] Do not delay ACKs for Initial and Handshake packets.
- [BUGFIX] Send PATH_CHALLENGE if path changed before mini conn
promotion.
- Logging improvements.
- http_client: discard data faster.
2020-01-29
- 2.10.1
- [BUGFIX] Coalesced packets could get longer than normal packet
size.
- Add spin bit configuration option es_spin (-o spin=[01]).
- Disable spin bit in 1/16 of connections.
- Improve logging a bit.
2020-01-28
- 2.10.0
- [FEATURE] QUIC and HTTP/3 Internet Draft 25 support.
- [API] Drop support for ID-23.
- [BUGFIX] Set key phase bit on outgoing packets correctly.
- Code cleanup.
2020-01-20
- 2.9.0
- [API] Drop support for Q039.
- Improve ACK-queuing logic. Send an ACK once in a while if
peer keeps on sending non-ack-eliciting packets.
- Improve Alt-Svc string: Q050 and later are not included in
the old-style "quic" string.
- Send stateless resets if connection could not be promoted.
- Schedule MAX_DATA if needed when DATA_BLOCKED is received.
- Use ls-qpack 0.11.2 -- needed for server push optimization.
- Code cleanup: handle some error cases, improve logging.
2020-01-16
- 2.8.9
- [BUGFIX] Use ls-qpack 0.11.1
- [OPTIMIZATION] Generate random bytes in batches.
- Change loss_bits transport parameter ID to 0x1057 following
latest draft.
- Randomize period with which PINGs are sent to elicit ACKs.
- Some refactoring and code cleanup.
2020-01-14
- 2.8.8
- [BUGFIX] Invalid read when parsing IETF transport parameters
(this was benign).
- [OPTIMIZATION] Frame bundling when using buffered packets in
IETF QUIC: a) flush QPACK decoder stream and b) include ACKs
in opportunistic fashion.
- Fix HTTP/3 framing unit test.
- Code cleanup.
2020-01-09
- 2.8.7
- [BUGFIX] Initial packet size check for IETF mini conn applies to
UDP payload, not QUIC packet.
- Support old and new school loss_bits transport parameter.
- Use Q run length of 64 as suggested in the loss bits Draft.
- Undo square wave count when packet is delayed.
- Code cleanup; minor fixes.
2020-01-06
- 2.8.5
- [HTTP3] Verify number of bytes in incoming DATA frames against
content-length.
- [HTTP3] Stop issuing streams credits if peer stops opening QPACK
decoder window. This addresses a potential attack whereby client
can cause the server to keep allocating memory. See Security
Considerations in the QPACK draft.
- [BUGFIX] Mini conn: don't shorten max packet size for Q050 and later.
- [BUGFIX] Init IETF connection flow controller using correct setting.
- [BUGFIX] Fix unintended sign extension when removing header protection.
- Code cleanup and minor fixes.
2019-12-30
- 2.8.1
- [FEATURE] Use occasional packet number gaps to detect optimistic
ACK attacks.
- [BUGFIX] Q050 client: all packet numbers are in the App PNS.
- [OPTIMIZATION] Merge multi-range ACK frames, not just single-range
ACK frames.
- IETF QUIC: use RTT estimate in ack timeout calculation.
- IETF handshake: abort conn when unexpected errors occur.
- Use PING rather than MAX_DATA frames to elicit ACKs from peer.
- Server: enforce 1200 byte Initial minimum packet size.
- [CLEANUP] Remove code to disable gQUIC crypto.
- [CLEANUP] Remove n_timestamps from ACK info struct.
- Optimize driver: reuse previous ancillary message when possible.
2019-12-23
- 2.8.0
- [FEATURE] Add support for Q050.
- [OPTIMIZATION] Reduce mallocs in gQUIC handshake.
- [BUGFIX] Disable redo of failed STREAM frame insertion with debug
logging.
2019-12-18
- 2.7.3
- [DEBUG] Further dedup next advisory tick messages when reason is
the same.
- [BUGFIX] Update size of `a` array in TP struct. Fixes (benign)
GitHub bug #94.
- Use Cubic by default again instead of BBR, as it delivers more
consistent performance.
2019-12-11
- 2.7.2
- [BUGFIX] Send controller: update scheduled bytes when DCID length
changes (IETF client).
- [BUGFIX] Drop alarm check from sanity test. It no longer works now
that we use loss chains.
- [PORTABILITY] Fix build on Alpine Linux.
- [PORTABILITY] Fix build using XCode.
- Client initial DCID length: use RAND_bytes() instead of rand(3).
- Add unit tests for connection min heap.
- [DEBUG] Log CID in gQUIC handshake module
- [DEBUG] Turn on extra checks for IETF client send controller.
- [DEBUG] Dedup next advisory tick messages when reason is IDLE timer.
- [DEBUG] QPACK decoder handler: log header error code.
2019-12-05
- 2.7.1
- [BUGFIX] client: don't call ignore_init() in middle of batch send.
ignore_init() makes an assumption that the send controller has access
to all outgoing packets. This change wraps a few IETF full connection
methods to delay calling ignore_init() until the engine returns all
outgoing packets that were batched.
- [BUGFIX] set errno to EAGAIN if sendmmsg() can't send all of them.
This needs to be done because the value of errno may be lost on
some platforms.
- [BUGFIX] Typo that set all bits in sm_qflags lead to crashes.
- [BUGFIX] Do not cancel header block processing after failure, as
QPACK releases the reference in that case.
- [CLEANUP] IETF encrypt: replace assert(0) with a warning.
- Several small improvements to the test server.
2019-11-27
- 2.7.0
- [API, FEATURE] Close connection immediately when ea_packets_out()
fails with errno != EAGAIN. The API change is that errno is now
examined. Make sure to set it if using something other than
sendmsg() to send packets.
- [CLEANUP] Immediate close logic in IETF full conn.
- [CLEANUP] Fix bogus warning about uninitialized `pair' variable.
2019-11-22
- 2.6.7
- [FEATURE] Implement the QL extension (offered by default).
- [BUGFIX] Abort when encountering unexpected HTTP/3 frames.
- [BUGFIX] Acknowledge (QPACK) HTTP/3 trailers correctly.
- [DEBUG] Turn on debug message for next advisory tick.
2019-11-20
- 2.6.6
- [BUGFIX] Using HTTP/3 to HTTP/1.x converter.
- [BUGFIX] Truncate log messages instead of throwing them away.
2019-11-15
- 2.6.5
- [BUGFIX] High priority buffered packet queue length.
- [BUGFIX] Rain time calculation: max_ack_delay is in milliseconds.
2019-11-12
- 2.6.3
- [BUGFIX] Close DATA frames with empty payload correctly.
2019-11-11
- 2.6.2
- [BUGFIX] SCID!=ODCID rule applies to Retry packets, not regular
packets.
- [BUGFIX] Zero-RTT: BoringSSL no longer flips read/write secrets.
- [BUGFIX] Truncate ACK frame rather instead of aborting IETF
connection.
- [BUGFIX] Client: don't send duplicate reset tokens.
- [BUGFIX] Remove invalid assertion in H3 framing code.
- Silence a warning in send ctl by restructuring switch() statement.
2019-11-08
- 2.6.1
- [BUGFIX] set retry token on all resubmitted packets.
- Event log: log sent packet flags. In particular, this allows one
to see whether token was sent.
- Don't migrate client if es_allow_migration is false.
2019-11-07
- 2.6.0
- [FEATURE] QUIC and HTTP/3 Internet Draft 24 support
2019-11-07
- 2.5.2
- [BUGFIX] argument order to gQUIC client constructor. Regression
introduced in 2.5.0.
- [BUGFIX] split buffered packet error recovery: destroy the correct
packet.
2019-11-04
- 2.5.1
- [BUGFIX] Fix double-free when emptying a packet number space.
- [BUGFIX] http_server: fix md5sum handler: handle EOF correctly.
- [BUGFIX] Use random values in bits 4 and 5 of the first byte of
verneg packets (regression introduced in 2.5.0).
- [OPTIMIZATION] Don't compile in expensive attq checks by default.
- [OPTIMIZATION] http_server: compile regexes only once.
2019-10-31
- 2.5.0
- [API] lsquic_engine_connect() can now be passed QUIC version to use.