Release 3.1.1

Release 3.1.0

CMake-only computation of whether librt is needed. (#374)

Merge branch 'master' of github.com:litespeedtech/lsquic

Update ls-qpack to 2.3.0

Remove refs to decrepit boringssl library. (#373)

It's unused, and it's not installed by vcpkg.

Add an installed CMake config. (#370)

* Add an installed CMake config.

Does not perform transitive link to boringssl though.

* Install vc_compat.h header

Release 3.0.5

Tick connection on want_datagram_write (#314)

* Tick connection on datagram write

* Check that a connection can send before marking connection tickable

CMake improvements (#369)

* Silence CMake warning by updating minimum versions.

* Generate files to build directory, not source directory

Make it easier to include boringssl and lsquic via add_subdirectory() (#354)

FIND_LIBRARY will fail if boringssl didn't get build yet, so the
following cmake build rule doesn't work:

add_subdirectory(third_party/boringssl)
set(BORINGSSL_LIB ${CMAKE_CURRENT_BINARY_DIR}/third_party/boringssl)
add_subdirectory(third_party/lsquic)

The patch fixed it by allow setting BORINGSSL_LIB_foo explicitly,
e.g.,
add_subdirectory(third_party/boringssl)
set(BORINGSSL_LIB_ssl ssl)
set(BORINGSSL_LIB_crypto crypto)
set(BORINGSSL_LIB_decrepit decrepit)
add_subdirectory(third_party/lsquic)

Disable cache for boringSSL, which causes build to fail.

Release 3.0.4

Merge branch 'master' of github.com:litespeedtech/lsquic

m) fix: handshake may failed if client send too many early data (#352)

Co-authored-by: wangfuyu <ivanfywang@gmail.com>

[MISC] replace TAB with 4 spaces.

[WIP] use vcpkg for getopt; build windows shared lib enhancements (#350)

* fix MSVC compiler shared library issues - mostly around 'extern const'

* add vcpkg install getopt to appveyor-windows.yml

show appveyor where to get getopt from vcpkg (non-static lib to avoid LGPL violation)

* add missing else case in lsquic_shared_support.h for windows static lib path

* have cmake spit out it's version

have cmake copy dependent dlls to build dir for tests on windows (getopt.dll)

* copy getopt.dll dep for tests

added commented version that requires >= 3.21 but handles any dll deps

* try caching boringssl dir to reduce CI build time since it's always same commit specified in config file

define VCPKG_ROOT in env since I can't seem to find it by VCPKG_ROOT or VCPKG_INSTALLED_DIR in appveyor's cmake v3.16 + vcpkg

* make windows cache dependent on yml and cmd

* sync up with changes to ls-qpack

Use same style of boolean checking in conn_ok_to_close() (#347)

update boringssl version info to support h3 (#346)

* update boringssl version info to support h3

RFC9001: QUIC transport parameters are carried in a TLS extension.
Different versions of QUIC might define a different method for negotiating transport configuration.

h3: quic_transport_parameters(0x39)

* Fix comments about support draft verions

Fix typo in internals.rst (#342)

Update ls-qpack to v2.2.2 .

fix: fix compile error caused by store_ctx (#338)

When I compile lsquic with boringssl, I got
following error:

error: storage size of ‘store_ctx’ isn’t known

Signed-off-by: anatasluo <luolongjuna@gmail.com>

Release 3.0.3

[BUGFIX]IETF QUIC v1(RFC9000) Retry Packet Integrity use draft-ietf-quic-tls-33 (or RFC9001) (#332)

Co-authored-by: luojianxiang <luojianxiang05@gmailcom>

m) fix: check if connection is out of startup phase by comparing cwnd but not cwnd_gain with target_window (#328)

[BUGFIX]add datasize to po_regen_sz which will not be retransmitted. (#327)

[BUGFIX]DATAGRAM frame can't be retransmitted (#325)

[BUGFIX] Properly enable ACK but disable RETX of DATAGRAM frame.

m) correct log in func generate_ping_frame (#319)

m) fix: quic server may assert failed when invalid SETTINGS frame in (#317)

ref: issue #316

Update lsquic_packet_common.h (#315)

Update README.md (#309)

lsquic can built&run on iOS platform.

Release 3.0.2

Fix #298 (#299)

Handle SSL_get_current_cipher returning NULL

Use C99 format specifiers to properly print uint64_t (#297)

Co-authored-by: Matt Durgavich <mdurgavich@vivox.com>

Release 3.0.1

[BUGFIX] lsquic_gquic_be_parse_packet_in_finish() need to make sure the packet has flag PI_GQUIC.
Fix issue #262

m) do not try to delete stk from shi_ctx (#295)

stk never be inserted to shi_ctx, so we don't need try to delete it.

Co-authored-by: wangfuyu <ivanfywang@gmail.com>

Only force TICK_CLOSE flag when CONNECTION_CLOSE frame received.

Update index.rst

Update README.md

Update README.md

Fix paths in Dockerfile (#289)

Release 3.0.0

Release 3.0.0

Fix: connection may not be closed timely when CONNECTION_CLOSE frame in (#284)

* Fix: connection may not be closed timely when CONNECTION_CLOSE frame in

* Simplify TICK_CLOSE logic

Co-authored-by: wangfuyu <ivanfywang@gmail.com>

Release 2.30.2

Update ls-hpack to 2.3.0

Release 2.30.1

Release 2.30.0

Release 2.30.0

- [FEATURE] Added support for sending/receiving multiple headers to address the
case related to "100 continue" header handling.
- [BUGFIX] Addressed high CPU usage for a GOAWAY connection before sending
CONNECTION_CLOSE.
- [BUGFIX] Addressed SIGFPE due to zero pacing rate. (ISSUE #254).
- [BUGFIX] Fixed a minor issue related to multi-paths.

Fix: must take xlct into account while determine_rtt (#248)

Co-authored-by: ivanfywang <ivanfywang@gmail.com>

Release 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.

Compatible with 16+ Bytes scid (#244)

Co-authored-by: ivanfywang <wentaomao@tencent.com>

Release 2.29.5

- Fix a few issues detected by h3spec for better compliance with HTTP/3 standard.

Release 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.

Release 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.

Release 2.29.2

- Fix regression in gQUIC server: bug #234.

Release 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.

README: add "docs passing" badge

Update badges -- add MacOS

Add MacOS image to the Linux AppVeyor YAML file: should be the same

Don't run HTTP/3 framing test on Windows

Update badging in the README

Add AppVeyor file for Linux build

Make libevent optional; move binaries into bin/

Release 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.

Remove obsolete files

Release 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.

Fix typo in tutorial (#225)

Release 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.

fix bug in send_packets_one_by_one on windows platform when send multiple iovs

Fix typo in API docs

Release 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.

Only run Travis-CI on master

Release 2.27.4

- [API] Add lsquic_conn_get_sni(), fixes issue #203.

Update .travis.yml

Run CI/CD when the branch is master

API: add lsquic_conn_get_sni(), fixes issue #203

Release 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.

Release 2.27.2

- [BUGFIX] Memory corruption in receive history copy-ranges function.

Release 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).

Release 2.27.0

- [API] Remove keylog callbacks. See issue #188.
- Add a bit more ALPN logging.

Release 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.

Removed #define LSQUIC_SUPPORTS_CONNCLOSEFRAME_CALLBACK

See discussion in PR #205

Support new lsquic_stream_if callback on_conncloseframe_received() to notify application of CONNECTION_CLOSE frame

Release 2.26.1

- [BUGFIX] Migration corner cases: drop or pad over path challenge
and response frames when necessary.
- Fix stream unit test.

Update badge image to use travis-ci.com

Release 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.

Release 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.

Fix Windows build

Release 2.24.5

- [FEATURE] Improve Delayed ACKs extension and turn it on by default.
- Limit receive history to a finite amount of memory.

Add links to tutorial and NetDev presentation

Release 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.

Release 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.

Release 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

Release 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.

Keep ea_get_ssl_ctx() optional for the client

Support get_ssl_ctx callback for client

Fix Windows build

Release 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.

Release 2.23.3

- [BUGFIX] Update packetization threshold when writing to stream
after packet size is reduced following an RTO.

Remove strndup definition from http_client (not used)

http_server: use lsquic_strndup() on Windows

Set -DLSQUIC_CONN_STATS=1 for Windows as well

Fix Windows build: implement own strndup(3)

Fix unit tests

Release 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.

Use ls-qpack v2.2.1

Release 2.23.1

- [BUGFIX] Regression introduced in 2.22.0: use correct number of
PNSs for IETF mini conn during promotion.

Fix Windows build: initialize local variable

Release 2.23.0

- [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.
- 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.

Add FAQ to the docs

Release 2.22.1

- [BUGFIX] Function that checks validity of handshake packets.

Fix Windows build

Fix BoringSSL version in README.md

Release 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.

Update BoringSSL version to b117a3a0b7bd11fe6ebd503ec6b45d6b910b41a1

GSO-Friendly Packet Memory (#175)

Fix several thread safety issues

Fixes bug #128 and bug #167.

Add CMake install target (#171)

Release 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.

Look for .so BoringSSL libs if LSQUIC_SHARED_LIB option is on

allow for making a shared library (Ref: #137) (#152)

Connection ID Steering (#165)

Release 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.

Update Makefile.am for OLS

Release 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.

Release 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.
- [BUFFIX] 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.

Release 2.19.10 -- Fix Windows and MacOS builds

Release 2.19.9

- [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.

Release 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.

Fix tutorial deficiencies pointed out to me by @lslisa (#146)

Release 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.

Finish LSQUIC Tutorial

Release 2.19.6

- Don't process incoming ECN marks if ECN is not enabled.
- Schedule ACK when incoming packet is marked with CE.

Release 2.19.5

- [BUGFIX] Generate frame record when moving an ACK from one buffered
packet to another.

Release 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.

Release 2.19.3

- [BUGFIX] Regression in 2.19.1 that breaks Q050

Release 2.19.2

- [BUGFIX] Do not reduce PLPMTU size by network overhead.
- [BUGFIX] Windows build.

Fix MSVC compilation by adding useless initialization

Release 2.19.1 -- fix crash in IETF client (DPLPMTUD regression)

Release 2.19.0

- [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.

Release 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

Release 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.

docker: use correct version of BorignSSL. Fixes #140

Release 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.

Release 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.

Release 2.17.1: fix regression in 2.17.0

Release 2.17.0

- [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().

Release 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.

Release 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.

Release 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.

Update version to 2.16.0

Update AppVeyor badge (now lsquic, not lsquic-client)

Fix Windows support

API: use lsxpack_header v206

Update ls-hpack to v2.2.0 and ls-qpack to v2.2.0 for lsxpack_header v206

(Not a typo: both libraries now happen to have the same version number.)

Update list of supported versions in README.md

Release 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.

Update version to 2.14.8

fix for BORINGSSL_LIB and BORINGSSL_INCLUDE paths with cmake (#134)

* fix for BORINGSSL_LIB and BORINGSSL_INCLUDE paths with cmake

* fix boringssl lib search with different build dir

Rename test/unittests to tests/ and test/ to bin/

Merge pull request #132 from nyrahul/andsupp

Android support

android cmake support

Release 2.14.7

- [BUGFIX] ALPN-to-version mapping: do not skip h3-Q050.
- [BUGFIX] Frame reader: skip headers if target stream is closed.

CirrusCI: Update FreeBSD version to 12.1

Release 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).

Release 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.

lsquic_qdh_cancel_stream_id(): Fix OSX compile error

lsquic_qdh_cancel_stream_id(): Fix OSX compile error

Release 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

Release 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

Release 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.

Release 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.

Use later version of BoringSSL

Release 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.

Release 2.13.3

- [BUGFIX] ACK ping-pong: TIMESTAMP frame is not to be acked.

Release 2.13.2

- [BUGFIX] Use of new lsxpack_header API's hsi_prepare_decode().

Merge pull request #109 from maxsharabayko/patch-1

Fixed minor errors in windows build instructions

Release 2.13.1 - fix a few minor issues flagged by Coverity

Fix uninitialized variable use in http_client

Thanks, Travis!

Release 2.13.0

- [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 2.0.0 -- 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_".

Merge pull request #111 from J-Rey/patch-1

Link to external docs & update year

Link to external docs & update year

Add tutorial.rst -- forgotten in the previous commit

Release 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.

API: add ea_alpn that is used when not in HTTP mode

Fixed minor errors in windows build instructions

Release 2.11.1: fix clang compilation

Release 2.11.0

- [FEATURE] QUIC and HTTP/3 Internet Draft 27 support.
- [FEATURE] Add experimental delayed ACKs extension.
- Drop support for Internet Draft 24.
- Code cleanup.

Add experimental support for delayed ACKs extension

Fail engine ctor if stream callbackes are not specified

Set lshpack include directory in the library's Makefile

Switch to readthedocs.org for hosting documentation

Add API reference.

Code cleanup. Improve comments in lsquic.h

Release 2.10.6

- [BUGFIX] HTTP/3 framing: don't misinterpret rare occurence as error.
- [BUGFIX] Send gap warning due to missing poisoned packet.

Add stream unit test disproving issue #106

Release 2.10.5

- [BUGFIX] BBR: call cci_sent() with correct arguments and at correct time.
- Refactor transport parameters module.
- Minor code cleanup.

Release 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).

Merge pull request #105 from bvdberg/bb_duplicate_includes

Fix duplicate header includes

Fix duplicate header includes

Release 2.10.3

- [BUGFIX] Cancel path responses and challenges on old path when
switching to new path.
- Logging network path information.

Release 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.

Release 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.

Release 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.

Release 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.

Release 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.

Use ls-qpack v0.11.1

Release 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.

Release 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.