12022-05-13 2 - 3.1.1 3 - Fix memory leak in processing stream frames (isse #368) 4 52022-05-06 6 - 3.1.0 7 - Better handling of transport parameter max_table_capcity < 32 8 - Fix NULL pointer dereference in handshake 9 - Fix 0-RTT transport parameter validation (issue #367) 10 - Remove unnecessary debug log to avoid NULL pointer dereference 11 - Tick connection on datagram write (pull #314) 12 - Do not dispatch write event for FINISHED stream 13 - Tweaks for CMake configuration (pull #354 #369 #370 #373 #374) 14 - Update ls-qpack to 2.3.0 15 162022-01-10 17 - 3.0.4 18 - Fix overly strict assert() 19 - Do not reset path MTU due to three lost_mtu_probe 20 - Fix handshake failure due to too many realy data 21 - Better build support for Windows platform 22 - Update ls-qpack to 2.2.3 23 242021-09-30 25 - 3.0.3 26 - Generate ACK for DATAGRAM frame while avoid RETX (issue #312 #325). 27 - Fix BBR end of startup phase detection (issue #328). 28 - Fix HTTP/3 v1 retry handling (issue #332) 29 - Fix memory leak when reset dcid (issue #333) 30 - Fix double decrement for ifc_active_cids_count (#334) 31 - Fix uninitialized value in frame_reader/frame_writer (#316) 32 - Remove a few overly strict asserts. 33 342021-06-16 35 - 3.0.2 36 - Do not timeout connection if peer sends PING frames. 37 - Do not assert for MTU probe packet when cancel a path. 38 392021-06-16 40 - 3.0.1 41 - Only force TICK_CLOSE flag after received CONNECTION_CLOSE frame. (issue #292 #281) 42 - Avoid mismatch in packet parsing. (issue #262) 43 - Remove unnecessary shi_delete call. 44 452021-06-02 46 - 3.0.0 47 - Enable HTTP/3 v1 by default, drop draft 34. 48 - Prevent connection timeout when client does not send PING frame. 49 - Close connection ASAP after recieve CONNECTION_CLOSE (issue #284) 50 - Do not assert() when decode a trailer. 51 - Properly handle GOAWAY frame, do not close the last acknowledged stream. 52 532021-04-20 54 - 2.30.2 55 - Update ls-hpack to 2.3.0 to address dynamic table size limit (issue #260). 56 572021-04-16 58 - 2.30.1 59 - Fixed an unintialized data member for handling pushed headers. 60 - Added a new status code for version negotiation failure. 61 - Fixed a few compliance issues found by h3spec. 62 - Addressed high CPU usage when transport cannot send pending packets. 63 642021-04-12 65 - 2.30.0 66 - Added support for sending/receiving multiple headers to address the 67 case related to "100 continue" header handling. 68 - Addressed high CPU usage for a GOAWAY connection before sending 69 CONNECTION_CLOSE. 70 - Addressed SIGFPE due to zero pacing rate. (ISSUE #254). 71 - Fixed a minor issue related to multi-paths. 72 732021-03-31 74 - 2.29.6 75 - Documentation: describe lsquic internals ("guts"). 76 - Two more fixes to compliance issues found by h3spec. 77 - Truncate, don't abort, SCIDs larger than 16 bytes (PR #244). 78 - Several small internal improvements and space optimizations. 79 802021-03-17 81 - 2.29.5 82 - Fix a few issues detected by h3spec for better compliance with HTTP/3 83 standard. 84 852021-03-08 86 - 2.29.4 87 - [BUGFIX] Infinite loop in stream: returned HQ frame can be at any 88 point on the list. 89 - [BUGFIX] Fail push promise immediately if STREAM_NOPUSH is set. 90 912021-03-03 92 - 2.29.3 93 - [BUGFIX] Do not send RESET_STREAM if writing to stream is already 94 finished. 95 - perf_client: wait for all ACKs before exiting. 96 - Improve how generated RESET_STREAM is logged. 97 - Fix compilation in different combos of adv_tick/conn_stats flags. 98 - Move qpack warning disablement into src/liblsquic/CMakeLists.txt. 99 1002021-02-23 101 - 2.29.2 102 - Fix regression in gQUIC server: bug #234. 103 1042021-02-18 105 - 2.29.1 106 - Make it possible to build the library and unit tests without 107 libevent. 108 - Build all command-line utilities in bin/ 109 - Add perf_client and perf_server command-line utilities to test 110 performance according to the "perf" protocol. 111 1122021-02-10 113 - 2.29.0 114 - [FEATURE] QUIC and HTTP/3 Internet Draft 34 support and v1 support. 115 The latter is turned off by default. 116 - Drop support for ID-28 and ID-32. 117 - [BUGFIX] IETF QUIC mini conn receive history (trechist): allow 118 unlimited inserts by dropping smallest elements. 119 - [BUGFIX] gQUIC: set STTL to correct value, issue #226. 120 - [BUGFIX] Account for poison packet gap when MTU probe was too large. 121 1222021-02-03 123 - 2.28.0 124 - [API] lsquic_ssl_sess_to_resume_info() is the new way to get 125 session info. 126 - [API] Add user pointer to ea_generate_scid callback. 127 - [API] Add lsquic_dcid_from_packet() -- a fast function to parse 128 out DCID. 129 - [API] Add es_max_batch_size to control outgoing packet batch size. 130 - [BUGFIX] Disallow sending of header while promise is being written. 131 - [BUGFIX] Flush stream when buffered bytes exhaust stream cap. 132 - [BUGFIX] Deactivate HQ frame if writing push promise fails. 133 - Perform sanity check on peer transport parameters and fail the 134 handshake if some flow control limits are too low. This can be 135 turned off, see es_check_tp_sanity. 136 - http_server: fix how requests are read in "hq" mode. 137 1382021-01-27 139 - 2.27.6 140 - [BUGFIX] Replace dispatch read/write events assertion with a check. 141 - [BUGFIX] gQUIC connection close: there is no HEADERS stream without 142 HTTP flag, see issue #220. 143 - http_client, http_server: add hq protocol support and other flags 144 for use with QUIC Interop Runner. 145 - Fix: use IP_PMTUDISC_PROBE (not IP_PMTUDISC_DO) on Linux to set 146 Don't-Fragment flag on outgoing packets. 147 - Fix send_packets_one_by_one on Windows platform when sending 148 multiple iovs, see issue #218. 149 - Exit echo_client on Windows immediately, see issue #219. 150 1512021-01-18 152 - 2.27.5 153 - [BUGFIX] Assertion in send controller when path validation fails. 154 - [BUGFIX] Assertion in BBR when sending out-of-order packets is 155 detected. 156 - [BUGFIX] Drop overflow receive history ranges when cloning. 157 - Log correct size of the incoming packet. 158 - Fix internal stream function. 159 1602021-01-13 161 - 2.27.4 162 - [API] Add lsquic_conn_get_sni(), fixes issue #203. 163 1642021-01-08 165 - 2.27.3 166 - [BUGFIX] gQUIC: do not destroy critical streams when connection is 167 closed. See issue #201. 168 - [BUGFIX] Drop #if LSQUIC_CONN_STATS from lsquic.h. See issue #211. 169 - [BUGFIX] Challenge cancellation when path validation fails. 170 - [BUGFIX] Do not send FIN if RST is scheduled to be sent on a stream. 171 - [BUGFIX] gQUIC's is_tickable() when connection is closing. 172 - [BUGFIX] Q050 processing of GOAWAY frames. 173 1742021-01-06 175 - 2.27.2 176 - [BUGFIX] Memory corruption in receive history copy-ranges function. 177 1782021-01-06 179 - 2.27.1 180 - [API] New knob to set outgoing packet batch size. 181 - Aborted connection now become tickable immediately. 182 - Abort connection when HTTP/3 frame cannot be opened (can only happen 183 when malloc fails). 184 1852020-12-31 186 - 2.27.0 187 - [API] Remove keylog callbacks. See issue #188. 188 - Add a bit more ALPN logging. 189 1902020-12-23 191 - 2.26.2 192 - [BUGFIX] Do not drop incoming data when STOP_SENDING is received. 193 - [BUGFIX] Receipt of STOP_SENDING should not cause read-reset. 194 - [BUGFIX] Allow stream writes after receiving RESET. 195 - [BUGFIX] Typo in stream: ANDing enum with wrong flag. 196 - [BUGFIX] Reset elision: do not use zero as special stream ID value, 197 for zero is a valid stream ID in IETF QUIC. 198 - [API] Add optional on_conncloseframe_received() callback. 199 - Use zero error code in RESET stream sent in response to STOP_SENDING. 200 2012020-12-17 202 - 2.26.1 203 - [BUGFIX] Migration corner cases: drop or pad over path challenge 204 and response frames when necessary. 205 - Fix stream unit test. 206 2072020-12-09 208 - 2.26.0 209 - [OPTIMIZATION] Adjust packet reordering threshold when spurious losses 210 are detected. 211 - [API] Pass pointer to local sockaddr to ea_get_ssl_ctx() callback. 212 2132020-12-04 214 - 2.25.0 215 - [API, FEATURE] Add es_delay_onclose option to delay on_close until all 216 data is ACKed. Use new function lsquic_stream_has_unacked_data() to 217 learn whether peer acknowledged all data written to stream. 218 - [API] Add optional on_reset() stream callback to get notifications 219 when RESET or STOP_SENDING frames are received. 220 - [BUGFIX] On STOP_SENDING, make conn tickable is _writeable_, not 221 readable. 222 2232020-11-24 224 - 2.24.5 225 - [FEATURE] Improve Delayed ACKs extension and turn it on by default. 226 - Limit receive history to a finite amount of memory. 227 2282020-11-18 229 - 2.24.4 230 - [BUGFIX] Check whether ECN counts are set in ACK struct before using 231 them. 232 - [BUGFIX] Calculate TLP timer correctly when only one packet is in 233 flight. 234 - [BUGFIX] Min RTO delay is 200 milliseconds, not 1 second. 235 - [BUGFIX] Memory leak in QPACK decoder handler: discard hset when 236 necessary. 237 - Allow retired and drained CIDs to be reused after a timeout. 238 2392020-11-11 240 - 2.24.3 241 - [BUGFIX] Get rough RTT estimate on receipt of Handshake packet. 242 This prevents BBR on the client from miscalculating pacing rate, 243 slowing down sending of ACK packets. 244 - [BUGFIX] Packets sent during handshake are app-limited. 245 - [BUGFIX] Bandwidth sampler starts in app-limited mode. 246 - [BUGFIX] Memory leak: free QPACK handler context in stream dtor. 247 - Logging improvements. 248 2492020-11-05 250 - 2.24.2 251 - [BUGFIX] Allow peer to migrate when its SCID is zero-length. 252 - [BUGFIX] PADDING size calculation: only one Short packet can be 253 coalesced. (This should have been part of the fix in 2.24.1). 254 - Abort connect if received NEW_CONNECTION_ID but current DCID is 255 zero-length. 256 - Improve log messages 257 2582020-11-04 259 - 2.24.1 260 - [API] Allow use of ea_get_ssl_ctx() on the client (optional). PR #186. 261 - [BUGFIX] Expand datagram with ack-eliciting Initial to 1200 bytes 262 after connection promotion. 263 - [BUGFIX] Discard CRYPTO frames from lower encryption levels after 264 connection promotion. 265 - [BUGFIX] Cancel path response if path could not be initialized. 266 2672020-10-28 268 - 2.24.0 269 - [FEATURE] QUIC and HTTP/3 Internet Draft 31 support. Drop ID-30 270 and ID-31 support. 271 - [BUGFIX] Divide-by-zero in newly enabled conn stats code when no 272 packets were sent. 273 - [BUGFIX] Memory leak in gQUIC client when server hello cannot be 274 parsed. 275 - [BUGFIX] Server Initial packet size calculation. 276 - Log user-agent and CONN_CLOSE reason when peer reports error. 277 - Example programs: Specify ALPN for echo and md5 clients and servers 278 (issue #184). 279 - Example programs: Don't add "QUIC_" prefix to lines in keylog file 280 (issue #185). 281 - http_server: Fix fd leak in preadv mode; fix preadv() usage when 282 reading from disk. 283 2842020-10-22 285 - 2.23.3 286 - [BUGFIX] Update packetization threshold when writing to stream 287 after packet size is reduced following an RTO. 288 2892020-10-21 290 - 2.23.2 291 - Add QPACK stats collection and experimentation mode, see the new 292 es_qpack_experiment setting. 293 - Log busy connection stats every second using the new "conn-stats" 294 log module. 295 - Log about skipping only once. 296 - Update HTTP/3 greased frame type formula. 297 - Use ls-qpack v2.2.1. 298 2992020-10-13 300 - 2.23.1 301 - [FEATURE] IETF Client 0-RTT support. 302 - [BUGFIX] Do not schedule MTU probe on first tick. 303 - [BUGFIX] Parsing DATAGRAM frame. 304 - [BUGFIX] If push promise fails, do not invoke hset destructor. 305 - [BUGFIX] Client: When connections are IDed by port number, check DCID. 306 Fixes issue #176. 307 - [BUGFIX] Regression introduced in 2.22.0: use correct number of 308 PNSs for IETF mini conn during promotion. 309 - Revert the 2.22.1 lsquic_is_valid_hs_packet change. All that was 310 necessary is a change to the way we call it in lsquic_engine. No 311 change to the function itself is required. 312 3132020-10-08 314 - 2.22.1 315 - [BUGFIX] Function that checks validity of handshake packets. 316 3172020-10-07 318 - 2.22.0 319 - [FEATURE] Extensible HTTP Priorities (HTTP/3 only). 320 - [FEATURE] Add conn context to packet-out memory interface (PR #175). 321 - [BUGFIX] gQUIC proof generation: allocate buffer big enough for 322 signature (issue #173). 323 - [BUGFIX] Make library thread-safe: drop use of global variables 324 (issue #133, issue #167). 325 - [BUGFIX] Deactivate only *recent* HQ frame, not any HQ frame. 326 - [BUGFIX] gQUIC server: associate compressed cert with SSL_CTX, 327 instead of keeping them in a separate hash, potentially leading 328 to mismatches. 329 - [BUGFIX] Stream data discard infinite loop: break on FIN. 330 - cmake: add install target via -DCMAKE_INSTALL_PREFIX (PR #171). 331 - Support randomized packet number to begin a connection. 332 - Mini and full IETF connection size optimization. 333 - http_client: specify HTTP priorities based on stream conditions. 334 3352020-09-29 336 - 2.21.0 337 - [FEATURE] QUIC and HTTP/3 Internet Draft 31 support. 338 - [API] Let user generate Souce Connection IDs. 339 - [FEATURE] Allow building lsquic as shared library. 340 - [OPTIMIZATION] Receive history: use a single contiguous memory 341 block for everything. 342 - Deprecate QUIC versions ID-27 and ID-30. 343 3442020-09-25 345 - 2.20.2 346 - [BUGFIX] Memory leak: free pushed promise when refcnt is zero. 347 - [BUGFIX] Memory leak in IETF full conn dtor: cleanup closed IDs sets. 348 3492020-09-23 350 - 2.20.1 351 - [BUGFIX] Typo in new "validate peer addr by DCID" code. It is 352 a benign bug (works either way), but better to fix it. 353 - Simplify Stream Priority Iterator (SPI). 354 - Minor documentation updates. 355 3562020-09-15 357 - 2.20.0 358 - [FEATURE] QUIC and HTTP/3 Internet Draft 30 support. 359 - [FEATURE] Unreliable Datagram Extension support. 360 - [FEATURE] Adaptive congestion controller. 361 - [BUGFIX] Do not send MAX_STREAM_DATA frames on crypto streams. 362 - [BUGFIX] Fail with CRYPTO_BUFFER_EXCEEDED when too much CRYPTO 363 data comes in. 364 - [BUGFIX] Spin bit is now strictly per path; value is reset on 365 DCID change. 366 - [BUGFIX] Check that max value of max_streams_uni and 367 max_streams_bidi TPs is 2^60. 368 - [BUGFIX] Close IETF mini conn immediately if crypto session 369 cannot be initialized. 370 - Deprecate ID-28 (no browser uses it): it's no longer in the 371 default versions list. 372 - New programs duck_server and duck_client that implement the 373 experimental siduck-00 protocol. They quack! 374 - IETF crypto streams: don't limit ourselves from sending. 375 - Command-line programs: turn off QL loss bits if -G is used, as 376 Wireshark cannot decrypt QUIC packets when this extension is used. 377 - Turn all h3 framing unit tests back on. 378 - Fix malo initialization when compiled in no-pool mode. 379 3802020-09-08 381 - 2.19.10 382 - [FEATURE] Add lsquic_stream_pwritev(). This function allows one to 383 reduce the number of system calls required to read a file from disk 384 by using lsquic_stream_pwritev() together with preadv(2). 385 - [BUGFIX] When stream is reset, it is writeable -- let user collect 386 the error. 387 - [BUGFIX] Calculate correct conn flow control if reading ends early. 388 - [BUGFIX] Remove stream from read and write queues on internal 389 shutdown. This is a regression introduced in 2.19.7. 390 - [BUGFIX] Swapped arguments in IETF RESET_FRAME generation. 391 - Turn off mini conn history when compiling with Visual Studio; this 392 allows the project to compile on Windows again. 393 - http_client: Add -3 flag to stop reading from streams early; code 394 cleanup. 395 - Don't use -Werror. 396 3972020-09-02 398 - 2.19.8 399 - [FEATURE] Update the timestamp extension to latest version. 400 - [FEATURE] Cope with appearance of ECN blackholes. 401 - [OPTIMIZATION] return packno offset and size when header is generated. 402 - [BUGFIX] ignore old ACK frames in mini conns. 403 - [BUGFIX] Mark initial server path as initialized. 404 - [BUGFIX] Do not merge ACK if ECN counts do not match. 405 - Turn incoming packet number history in mini conn back on. 406 - Record mini conn event history again when compiled in debug mode. 407 - IETF mini conn: log when ACK is queued. 408 - Clean up and refactor code in several places. 409 4102020-08-26 411 - 2.19.7 412 - Handle ECT-CE event: issue a loss event. 413 - Log the fact that we ignore SETTINGS_MAX_HEADER_LIST_SIZE. 414 - Use Max Push ID in GOAWAY frame to cancel promises. 415 - Add support for HTTP/3 CANCEL_PUSH frame. 416 - lsquic_stream_is_pushed: streams without headers are never pushed. 417 - [BUGFIX] Regression in lsquic_stream_shutdown_internal: now it shuts down. 418 - Improve logic whether to generate CONNECTION_CLOSE. 419 4202020-08-20 421 - 2.19.6 422 - Don't process incoming ECN marks if ECN is not enabled. 423 - Schedule ACK when incoming packet is marked with CE. 424 4252020-08-11 426 - 2.19.5 427 - [BUGFIX] Generate frame record when moving an ACK from one buffered 428 packet to another. 429 4302020-08-06 431 - 2.19.4 432 - [BUGFIX] Do not return an oversize MTU probe to connection twice. 433 - [FEATURE] Delayed Acks updated to latest draft. Still experimental. 434 - Minor code cleanup in IETF full connection. 435 4362020-08-04 437 - 2.19.3 438 - [BUGFIX] Regression in 2.19.1 that breaks Q050 439 4402020-07-30 441 - 2.19.2 442 - [BUGFIX] Do not reduce PLPMTU size by network overhead. 443 - [BUGFIX] Windows build. 444 4452020-07-29 446 - 2.19.1 447 - [FEATURE] DPLPMTUD support. IETF connections now search for the 448 maximum packet size, improving throughput. 449 - [DEBUG] Record event in stream history when on_close() is called 450 in dtor. 451 4522020-07-22 453 - 2.18.2 454 - [BUGFIX] Send prediction: lone path challenges do not get squeezed out 455 - Fix crash in http_client: now -K and -B can be used simultaneously 456 4572020-07-14 458 - 2.18.1 459 - [FEATURE] Implement the "QUIC bit grease" extension. 460 - [BUGFIX] Selecting CID used for logging on client. 461 - [BUGFIX] Header protection assertion. 462 - [BUGFIX] Server: enable SSL key logging when cert lookup callback 463 is not set. 464 - Remove some dead code. 465 4662020-07-06 467 - 2.18.0 468 - [API] Rename "0-RTT" to "session resumption." In IETF QUIC, "0-RTT" 469 always refers to early data, meaning a request that the server can 470 reply to in the very first return flight. A more appropriate name 471 for what we support on the client site is "session resumption," which 472 is standard TLS terminology. Later, when we add support for 0-RTT 473 (early data), we can use the 0-RTT terminology again, this time in 474 proper context. 475 - [BUGFIX] Do not set certificate callback if ea_lookup_cert is NULL. 476 - [BUGFIX] Make connection tickable when it's marked as closed. 477 - [BUGFIX] Fail certificate lookup if SNI is not present in HTTP mode. 478 - Several documentation fixes and improvements. 479 - Minor code cleanup. 480 4812020-06-24 482 - 2.17.2 483 - [BUGFIX] Infinite loop in stream: advance read offset when discarding 484 data. 485 - [OPTIMIZATION] Header protection: only initialize cipher once. 486 - [OPTIMIZATION] Batch header protection application. 487 4882020-06-18 489 - 2.17.1 490 - [FEATURE] QUIC and HTTP/3 Internet Draft 29 support. 491 - [BUGFIX] Check that scheduled packets are also sendable when 492 calculating a connection's "tickable" property. 493 - [BUGFIX] Don't count scheduled packets as in-flight when pacer is 494 checked on tick. 495 - gQUIC: delay calling on_new for pushed stream until headers are 496 available. 497 - Allow nested calls to lsquic_engine_connect(). 498 4992020-06-15 500 - 2.16.3 501 - [OPTIMIZATION] Stash up to two reordered packets in IETF mini conn 502 instead of dropping them. 503 - [BUGFIX] Crash: check decrypt context before using it. This regression 504 was introduced in 2.16.2. 505 5062020-06-12 507 - 2.16.2 508 - [BUGFIX] ID-28: do not use TLS middlebox compatibility mode in 509 ClientHello. This change requires using a newer version of BoringSSL. 510 - [BUGFIX] Free connections in Advisory Tick Time Queue in engine dtor. 511 - [BUGFIX] IETF QUIC client: narrow migration check to a single path. 512 - [BUGFIX] NULL dereference: set function pointers for alarm for path 513 challenges 2 and 3. 514 - [BUGFIX] HTTP/3 headers may be followed immediately by trailers. 515 - [BUGFIX] Log messages when SCID changes. 516 5172020-06-09 518 - 2.16.1 519 - [FEATURE] Use "no-progress timeout" after which connection is closed. 520 - [BUGFIX] Select new SCID when current SCID is retired. 521 - [BUGFIX] Don't warn about dropped Initial packet sequence gaps during 522 mini/full handoff. 523 - [BUGFIX] Send correct conn error when HTTP/3 frame is truncated. 524 - [BUGFIX] Mini conn: consider amplification when deciding to return 525 TICK_SEND. 526 - [BUGFIX] Don't double-count tag length in amplification logic. 527 - [BUGFIX] Don't squeeze out lone path challenges. 528 - [BUGFIX] Log messages dealing with scheduled packet queue squeezing. 529 - [BUGFIX] don't wipe current path if no path challenge responses 530 come back. 531 - [BUGFIX] When path is reset, don't lose path_id which is used for 532 logging. 533 - Downgrade flow control violations to info log level from warnings. 534 - Fix connection cap extra check, avoid checks in nested calls. 535 - Fix some unit tests when extra checks are enabled. 536 - Use ls-hpack 2.2.1. 537 - Turn off unconditional extra checks for IETF clients. 538 - Extra checks: don't verify sent size of hello packets. Client 539 changes DCID length and this check will fail. 540 5412020-06-03 542 - 2.16.0 543 - [API] Use lsxpack_header v206. 544 - [FEATURE] Windows supported. 545 - [BUGFIX] Fix uninitialized variable use in client (regression in 546 2.15.0). 547 - Use ls-hpack 2.2.0. 548 - Use ls-qpack 2.2.0. 549 - Sample programs: fix the way maximum number of packets is 550 calculated. 551 - Remove some dead code. 552 5532020-05-27 554 - 2.15.0 555 - [FEATURE] QUIC and HTTP/3 Internet Draft 28 support. 556 - [BUGFIX] Ignore Retry packets after other packets are decrypted 557 successfully. 558 - [BUGFIX] Transport parameter decoding: CID no longer has 4-byte 559 length minimum. 560 - http_client: fix and optimize lsxpack_header allocator. 561 - Drop support for Internet Draft 25. 562 5632020-05-19 564 - 2.14.8 565 - Support Android. 566 - Rerrange tree: move command-line examples into bin/ and unit 567 tests into tests/ from test/unittests/. 568 5692020-05-12 570 - 2.14.7 571 - [BUGFIX] ALPN-to-version mapping: do not skip h3-Q050. 572 - [BUGFIX] Frame reader: skip headers if target stream is closed. 573 5742020-05-06 575 - 2.14.6 576 - [BUGFIX] Fix amplification mitigation in 0-RTT case. 577 - [BUGFIX] IETF mini connection should not tickable if cannot send 578 a packet due to amplification. 579 - [BUGFIX] Fail if active_connection_id_limit TP is smaller than 2. 580 - [BUGFIX] Qlog server certificates for IETF QUIC connections. 581 - [BUGFIX] Uninitialized struct padding usage in tokgen (benign). 582 - [BUGFIX] Incorrect argument to shi_lookup() (benign). 583 5842020-04-29 585 - 2.14.5 586 - [BUGFIX] In coalesced datagram, ignore packets whose CID does not match. 587 - [BUGFIX] Frame reader: skip headers if target stream is not found. 588 - [BUGFIX] Log message in QPACK decoder handler. 589 5902020-04-24 591 - 2.14.4 592 - [BUGFIX] Heed es_rw_once for pushed HTTP/3 streams. 593 - [BUGFIX] IETF client: set correct flags on bidirectional streams. 594 - [BUGFIX] Generate Cancel Stream QPACK instructions for abandoned 595 streams. 596 - [BUGFIX] Do not call header callbacks after stream is closed. 597 - Use ls-qpack 2.1.1 598 5992020-04-15 600 - 2.14.3 601 - [BUGFIX] gQUIC: pass correct stream to hsi_create_header_set() callback. 602 - [BUGFIX] Use ls-hpack 2.1.1 603 - Improve stream code readability. 604 - Use ls-qpack 2.0.5 605 6062020-04-08 607 - 2.14.2 608 - [BUGFIX] Use ls-qpack 2.0.4 609 - [BUGFIX] Honor max packet size on the client and when path changes. 610 - http_server: fix prepare_decode() function. 611 6122020-04-07 613 - 2.14.1 614 - [BUGFIX] Place connections on tickable queue when sending is reenabled. 615 - [BUGFIX] A connection is tickable if it has unsent packets. 616 - [BUGFIX] Heed peer's max_packet_size transport parameter. 617 6182020-03-30 619 - 2.14.0 620 - [API] Use lsxpack_header structure to send HTTP headers. 621 - [OPTIMIZATION] nocopy's readable_bytes() function. 622 - http_server: fix typo in error message 623 - Use ls-hpack 2.1.0. 624 - Use ls-qpack 2.0.0. 625 6262020-03-23 627 - 2.13.3 628 - [BUGFIX] ACK ping-pong: TIMESTAMP frame is not to be acked. 629 6302020-03-13 631 - 2.13.2 632 - [BUGFIX] Use of new lsxpack_header API's hsi_prepare_decode(). 633 6342020-03-12 635 - 2.13.1 636 - [API] Use lsxpack_header structure to process incoming headers. 637 - [BUGFIX] Fix assertion when zero-padding Initial packet. 638 - [BUGFIX] Use idle timeout before we learn of peer's value. 639 - Use ls-hpack 2.0.1 -- has lsxpack_header changes. 640 - Use ls-qpack 0.14.0 -- new, common with ls-hpack, XXH seed (not 641 used yet). 642 - Code cleanup: prefix exported functions with "lsquic_". 643 6442020-03-02 645 - 2.12.0 646 - [FEATURE] QUIC timestamps extension. 647 - [API] New: ea_alpn that is used when not in HTTP mode. 648 - [BUGFIX] SNI is mandatory only for HTTP/3 and gQUIC. 649 - [BUGFIX] Benign double-free -- issue #110. 650 - [BUGFIX] Printing of transport parameters. 651 6522020-02-24 653 - 2.11.1 654 - [FEATURE] QUIC and HTTP/3 Internet Draft 27 support. 655 - [FEATURE] Add experimental delayed ACKs extension. 656 - Drop support for Internet Draft 24. 657 - Code cleanup. 658 6592020-02-14 660 - 2.10.6 661 - [BUGFIX] HTTP/3 framing: don't misinterpret rare occurence as error. 662 - [BUGFIX] Send gap warning due to missing poisoned packet. 663 - Stream unit test for scenario in issue #106. 664 6652020-02-13 666 - 2.10.5 667 - [BUGFIX] BBR: call cci_sent() with correct arguments and at correct 668 time. 669 - Refactor transport parameters module. 670 - Minor code cleanup. 671 6722020-02-11 673 - 2.10.4 674 - [BUGFIX] Send HANDSHAKE_DONE only after Finished is received. 675 - [BUGFIX] Don't treat garbage UDP padding as library error; ignore 676 it instead. 677 - [BUGFIX] Fix compilation on FreeBSD (missing header). 678 - Code cleanup: remove unnecessary #includes. 679 6802020-01-31 681 - 2.10.3 682 - [BUGFIX] Cancel path responses and challenges on old path when 683 switching to new path 684 - Logging network path information. 685 6862020-01-30 687 - 2.10.2 688 - [BUGFIX] Do not delay ACKs for Initial and Handshake packets. 689 - [BUGFIX] Send PATH_CHALLENGE if path changed before mini conn 690 promotion. 691 - Logging improvements. 692 - http_client: discard data faster. 693 6942020-01-29 695 - 2.10.1 696 - [BUGFIX] Coalesced packets could get longer than normal packet 697 size. 698 - Add spin bit configuration option es_spin (-o spin=[01]). 699 - Disable spin bit in 1/16 of connections. 700 - Improve logging a bit. 701 7022020-01-28 703 - 2.10.0 704 - [FEATURE] QUIC and HTTP/3 Internet Draft 25 support. 705 - [API] Drop support for ID-23. 706 - [BUGFIX] Set key phase bit on outgoing packets correctly. 707 - Code cleanup. 708 7092020-01-20 710 - 2.9.0 711 - [API] Drop support for Q039. 712 - Improve ACK-queuing logic. Send an ACK once in a while if 713 peer keeps on sending non-ack-eliciting packets. 714 - Improve Alt-Svc string: Q050 and later are not included in 715 the old-style "quic" string. 716 - Send stateless resets if connection could not be promoted. 717 - Schedule MAX_DATA if needed when DATA_BLOCKED is received. 718 - Use ls-qpack 0.11.2 -- needed for server push optimization. 719 - Code cleanup: handle some error cases, improve logging. 720 7212020-01-16 722 - 2.8.9 723 - [BUGFIX] Use ls-qpack 0.11.1 724 - [OPTIMIZATION] Generate random bytes in batches. 725 - Change loss_bits transport parameter ID to 0x1057 following 726 latest draft. 727 - Randomize period with which PINGs are sent to elicit ACKs. 728 - Some refactoring and code cleanup. 729 7302020-01-14 731 - 2.8.8 732 - [BUGFIX] Invalid read when parsing IETF transport parameters 733 (this was benign). 734 - [OPTIMIZATION] Frame bundling when using buffered packets in 735 IETF QUIC: a) flush QPACK decoder stream and b) include ACKs 736 in opportunistic fashion. 737 - Fix HTTP/3 framing unit test. 738 - Code cleanup. 739 7402020-01-09 741 - 2.8.7 742 - [BUGFIX] Initial packet size check for IETF mini conn applies to 743 UDP payload, not QUIC packet. 744 - Support old and new school loss_bits transport parameter. 745 - Use Q run length of 64 as suggested in the loss bits Draft. 746 - Undo square wave count when packet is delayed. 747 - Code cleanup; minor fixes. 748 7492020-01-06 750 - 2.8.5 751 - [HTTP3] Verify number of bytes in incoming DATA frames against 752 content-length. 753 - [HTTP3] Stop issuing streams credits if peer stops opening QPACK 754 decoder window. This addresses a potential attack whereby client 755 can cause the server to keep allocating memory. See Security 756 Considerations in the QPACK draft. 757 - [BUGFIX] Mini conn: don't shorten max packet size for Q050 and later. 758 - [BUGFIX] Init IETF connection flow controller using correct setting. 759 - [BUGFIX] Fix unintended sign extension when removing header protection. 760 - Code cleanup and minor fixes. 761 7622019-12-30 763 - 2.8.1 764 - [FEATURE] Use occasional packet number gaps to detect optimistic 765 ACK attacks. 766 - [BUGFIX] Q050 client: all packet numbers are in the App PNS. 767 - [OPTIMIZATION] Merge multi-range ACK frames, not just single-range 768 ACK frames. 769 - IETF QUIC: use RTT estimate in ack timeout calculation. 770 - IETF handshake: abort conn when unexpected errors occur. 771 - Use PING rather than MAX_DATA frames to elicit ACKs from peer. 772 - Server: enforce 1200 byte Initial minimum packet size. 773 - [CLEANUP] Remove code to disable gQUIC crypto. 774 - [CLEANUP] Remove n_timestamps from ACK info struct. 775 - Optimize driver: reuse previous ancillary message when possible. 776 7772019-12-23 778 - 2.8.0 779 - [FEATURE] Add support for Q050. 780 - [OPTIMIZATION] Reduce mallocs in gQUIC handshake. 781 - [BUGFIX] Disable redo of failed STREAM frame insertion with debug 782 logging. 783 7842019-12-18 785 - 2.7.3 786 - [DEBUG] Further dedup next advisory tick messages when reason is 787 the same. 788 - [BUGFIX] Update size of `a` array in TP struct. Fixes (benign) 789 GitHub bug #94. 790 - Use Cubic by default again instead of BBR, as it delivers more 791 consistent performance. 792 7932019-12-11 794 - 2.7.2 795 - [BUGFIX] Send controller: update scheduled bytes when DCID length 796 changes (IETF client). 797 - [BUGFIX] Drop alarm check from sanity test. It no longer works now 798 that we use loss chains. 799 - [PORTABILITY] Fix build on Alpine Linux. 800 - [PORTABILITY] Fix build using XCode. 801 - Client initial DCID length: use RAND_bytes() instead of rand(3). 802 - Add unit tests for connection min heap. 803 - [DEBUG] Log CID in gQUIC handshake module 804 - [DEBUG] Turn on extra checks for IETF client send controller. 805 - [DEBUG] Dedup next advisory tick messages when reason is IDLE timer. 806 - [DEBUG] QPACK decoder handler: log header error code. 807 8082019-12-05 809 - 2.7.1 810 - [BUGFIX] client: don't call ignore_init() in middle of batch send. 811 ignore_init() makes an assumption that the send controller has access 812 to all outgoing packets. This change wraps a few IETF full connection 813 methods to delay calling ignore_init() until the engine returns all 814 outgoing packets that were batched. 815 - [BUGFIX] set errno to EAGAIN if sendmmsg() can't send all of them. 816 This needs to be done because the value of errno may be lost on 817 some platforms. 818 - [BUGFIX] Typo that set all bits in sm_qflags lead to crashes. 819 - [BUGFIX] Do not cancel header block processing after failure, as 820 QPACK releases the reference in that case. 821 - [CLEANUP] IETF encrypt: replace assert(0) with a warning. 822 - Several small improvements to the test server. 823 8242019-11-27 825 - 2.7.0 826 - [API, FEATURE] Close connection immediately when ea_packets_out() 827 fails with errno != EAGAIN. The API change is that errno is now 828 examined. Make sure to set it if using something other than 829 sendmsg() to send packets. 830 - [CLEANUP] Immediate close logic in IETF full conn. 831 - [CLEANUP] Fix bogus warning about uninitialized `pair' variable. 832 8332019-11-22 834 - 2.6.7 835 - [FEATURE] Implement the QL extension (offered by default). 836 - [BUGFIX] Abort when encountering unexpected HTTP/3 frames. 837 - [BUGFIX] Acknowledge (QPACK) HTTP/3 trailers correctly. 838 - [DEBUG] Turn on debug message for next advisory tick. 839 8402019-11-20 841 - 2.6.6 842 - [BUGFIX] Using HTTP/3 to HTTP/1.x converter. 843 - [BUGFIX] Truncate log messages instead of throwing them away. 844 8452019-11-15 846 - 2.6.5 847 - [BUGFIX] High priority buffered packet queue length. 848 - [BUGFIX] Rain time calculation: max_ack_delay is in milliseconds. 849 8502019-11-12 851 - 2.6.3 852 - [BUGFIX] Close DATA frames with empty payload correctly. 853 8542019-11-11 855 - 2.6.2 856 - [BUGFIX] SCID!=ODCID rule applies to Retry packets, not regular 857 packets. 858 - [BUGFIX] Zero-RTT: BoringSSL no longer flips read/write secrets. 859 - [BUGFIX] Truncate ACK frame rather instead of aborting IETF 860 connection. 861 - [BUGFIX] Client: don't send duplicate reset tokens. 862 - [BUGFIX] Remove invalid assertion in H3 framing code. 863 - Silence a warning in send ctl by restructuring switch() statement. 864 8652019-11-08 866 - 2.6.1 867 - [BUGFIX] set retry token on all resubmitted packets. 868 - Event log: log sent packet flags. In particular, this allows one 869 to see whether token was sent. 870 - Don't migrate client if es_allow_migration is false. 871 8722019-11-07 873 - 2.6.0 874 - [FEATURE] QUIC and HTTP/3 Internet Draft 24 support 875 8762019-11-07 877 - 2.5.2 878 - [BUGFIX] argument order to gQUIC client constructor. Regression 879 introduced in 2.5.0. 880 - [BUGFIX] split buffered packet error recovery: destroy the correct 881 packet. 882 8832019-11-04 884 - 2.5.1 885 - [BUGFIX] Fix double-free when emptying a packet number space. 886 - [BUGFIX] http_server: fix md5sum handler: handle EOF correctly. 887 - [BUGFIX] Use random values in bits 4 and 5 of the first byte of 888 verneg packets (regression introduced in 2.5.0). 889 - [OPTIMIZATION] Don't compile in expensive attq checks by default. 890 - [OPTIMIZATION] http_server: compile regexes only once. 891 8922019-10-31 893 - 2.5.0 894 - [API] lsquic_engine_connect() can now be passed QUIC version to use. 895 - [OPTIMIZATION] Queue opportunistic ACKs if there is data to be sent. 896 - [BUGFIX] Don't evict streams from priority iterator if there is 897 only one queue. 898 - [OPTIMIZATION, BUGFIX] Several other optimizations and bug fixes. 899 - Use ls-qpack v0.10.7. 900 9012019-10-24 902 - 2.4.10 903 - [BUGFIX] IETF QUIC server: fix uninitialized variable use. 904 - [BUGFIX] make sure TLSv1.3 is not disabled in SSL object. 905 - [BUGFIX] Use issuer name and serial number to cache certs (SKID 906 values are not unique). 907 - [BUGFIX] Always set the idle alarm in IETF connection so that it 908 can time out. 909 - Use ls-qpack v0.10.6, as it silences some warnings. 910 9112019-10-21 912 - 2.4.8 913 - [OPTIMIZATION, BUGFIX] Use ls-qpack v0.10.5. 914 9152019-10-15 916 - 2.4.7 917 - Add echo client and server to the distibution. 918 - Add MD5 client and server to the distibution. 919 - Fix http_client: check command-line arguments better, prevent crash. 920 - Fix IETF conn: can_write_ack() should only care about APP PNS. 921 - Client: delay stream creation until handshake succeds. 922 - Reset HTTP stream whose write end is closed prematurely. 923 - Fix tickable(): mirror behavior of tick() wrt buffered packets. 924 - Log reason why engine is tickable. 925 9262019-10-11 927 - 2.4.6 928 - Minor code cleanup and logging improvements. 929 - Server and client programs: include library version (e.g. 2.4.6) 930 into `server' and `user-agent' headers. 931 9322019-10-08 933 - 2.4.5 934 - [OPTIMIZATION]: flush encoder stream only when necessary. 935 - [BUGFIX] Use ls-qpack v0.10.2 for new API -- and for a bug fix. 936 - [BUGFIX] Typo in IETF conn SETTINGS writer. 937 - Use latest BoringSSL. 938 9392019-10-08 940 - 2.4.4 941 - [API] Add lsquic_alpn2ver() to aid parsing Alt-Svc header. 942 - [BUGFIX] NULL dereference when H3 frame header would be split. 943 - [BUGFIX] Do not close fixed-size H3 frame prematurely. 944 - [BUGFIX] Allow PING frames in IETF mini conn. 945 - [BUGFIX] Mini conns: don't send any packets after receiving 946 CONNECTION_CLOSE. 947 - [BUGFIX] Client migration: reserve slot for DCID from transport params. 948 - [BUGFIX] Allow max_early_data_size=0 -- early_data might not be there. 949 - [BUGFIX] Use an invalid stream number to reset BPT cache (zero is now a 950 valid stream number). 951 - [SPEC] Use FINAL_SIZE_ERROR when FIN mismatch is detected. 952 - [OPTIMIZATION] Closed connection only gets one chance to send packets. 953 - [OPTIMIZATION] Flush headers stream before packetizing stream data. 954 - [OPTIMIZATION] process QPACK encoder STREAM frames immediately. 955 - Update ls-qpack to v0.10.1. 956 9572019-09-30 958 - 2.4.3 959 - Add GQUIC versions to the list of h3 ALPNs for Alt-Svc header. 960 For example, h3-Q043. Chrome will switch to using this format at 961 some point in the future. 962 - [BUGFIX] Send correct value in max_streams_uni transport param 963 - [SPEC] Abort IETF QUIC connection if max_early_data_size is not set 964 to 0xFFFFFFFF 965 9662019-09-23 967 - 2.4.2 968 - [BUGFIX] H3 framing: fix zero-byte write when space is available 969 - [BUGFIX] Don't send STREAM frame when incoming unidirectgional stream 970 is closed 971 - [BUGFIX] Cancel all pending writes by stream reset by a GOAWAY 972 - [BUGFIX] Fix use-after-free in IETF full conn 973 - [OPTIMIZATION] Wait for session tickets for two seconds and then drop 974 SSL object and crypto streams. 975 9762019-09-18 977 - 2.4.0 978 - [FEATURE] QUIC and HTTP/3 Internet Draft 23 support 979 9802019-09-13 981 - 2.3.1 982 - [BUGFIX] Fix memory leaks 983 - [BUGFIX] Fix unit tests 984 9852019-09-12 986 - 2.3.0 987 - [FEATURE] BBR congestion control is on by default 988 - [BUGFIX] BBR app-limited logic 989 - [BUGFIX] Fix uninitialized warnings in IETF 990 - [BUGFIX] Update ls-qpack to v0.9.14 991 - [CLEANUP] Code cleanup 992 9932019-09-11 994 - 2.2.0 995 - [FEATURE] Server code is included in the library 996 - [FEATURE] IETF QUIC and HTTP/3 Support (ID-22) 997 9982019-05-13 999 - 1.21.2 1000 - [OPTIMIZATION] HPACK: use history to improve compression performance 1001 10022019-05-06 1003 - 1.21.1 1004 - [BUGFIX] If FIN or RST not received, don't delay stream destruction. 1005 - [OPTIMIZATION] Speed up HPACK encoder by using same hash value to 1006 search static and dynamic tables. 1007 10082019-04-12 1009 - 1.21.0 1010 - [FEATURE] Add qlog log module. 1011 10122019-04-01 1013 - 1.20.0 1014 - [FEATURE] Add support for Q046. 1015 10162019-03-19 1017 - 1.19.6 1018 - [BUGFIX] Ensure that Largest Observed does not decrease in ACKs we 1019 send. ACK frames placed in packets in buffered queues (optimization 1020 introduced in 1.17.15) can be preceded by an ACK frame generated later. 1021 In this case, the older ACK frame should not be sent out, as Chromium- 1022 based servers flags decrease in the ACK frame's Largest Observed value 1023 as an error. 1024 10252019-03-05 1026 - 1.19.5 1027 - [BUGFIX] Use correct public key from PUBS based on KEXS index. 1028 - [BUGFIX] Check flags before dispatching writes, avoiding assert. 1029 - [BUGFIX] Set :scheme to "https" (instead of "HTTP"). 1030 10312019-02-25 1032 - 1.19.4 1033 - [BUGFIX] Check buffer bounds when looking up version in 0-RTT blob. 1034 - [BUGFIX] http_client: don't fetch 0-rtt info if handshake failed. 1035 - Log number of pacer calls at DEBUG, rather than NOTICE, level. 1036 10372019-02-18 1038 - 1.19.3 1039 - [BUGFIX] Q044: don't encode packet number in 6 bytes. Six-byte 1040 packet number encoding does not exist in Q044. This fixes a 1041 regression introduced in '[BUGFIX] Buffered packets can contain 1042 ACK frames' -- we need to keep QUIC version in mind when selecting 1043 the longest possible packet number encoding used for the buffered 1044 packet that carries the ACK. 1045 - [BUGFIX] Do not increase CWND when timeout occurs. 1046 - http_client: support setting handshake timeout on command line. 1047 Use -o handshake_to=timeout. 1048 - http_client: use -k to connect UDP socket to pick up ICMP errors. 1049 - http_client: allow pathless mode, when only handshake is performed 1050 without issuing any requests. This can be done by simply not 1051 specifying a -p flag on the command line. 1052 10532019-02-11 1054 - 1.19.2 1055 - [BUGFIX] Begin negotiation with version provided in 0-RTT info. 1056 - [BUGFIX] Version checking in zero_rtt deserialize function. 1057 10582019-02-04 1059 - 1.19.1 1060 - [BUGFIX] Fix Windows build. 1061 10622019-02-04 1063 - 1.19.0 1064 - [FEATURE, API Change] 0-RTT support. Add function to export 0-RTT 1065 information; it can be supplied to a subsequent connect() call. 1066 - [FEATURE] Add -0 flag to http_client to exercise 0-RTT support. 1067 - [BUGFIX] Resuscitate the Windows build. 1068 - [BUGFIX] Send HTTP settings (max header list size) if necessary. 1069 - [BUGFIX] Buffered packets can contain ACK frames. 1070 - [BUGFIX] Make packet writeable once all STREAM frames are elided. 1071 - [BUGFIX] Fix potential null dereference when realloc fails. 1072 - cmake: simplify build configuration. 1073 10742019-01-28 1075 - 1.18.0 1076 - [API Change] Can specify clock granularity in engine settings. 1077 - [BUGFIX] Pacer uses fixed clock granularity. Since the change on 1078 2018-04-09, it is not necessary to try to approximate the next tick 1079 time in the pacer: it can use fix clock granularity specified by 1080 the user. 1081 - [BUGFIX] Do not tick constantly before handshake is done. 1082 - [BUGFIX] Do not exit tick prematurely: reuse packet with ACK. Even 1083 if we cannot allocate *more* packets, we could still be able to write 1084 to one already allocated. 1085 - [BUGFIX] Do not schedule pacer if there are no lost packets. 1086 10872019-01-17 1088 - 1.17.15 1089 - [BUGFIX] http_client: make sure only one read per on_read() callback 1090 is performed in the header conversion bypass (-B) mode. 1091 - http_client: with -E, assign random priority when stream is created. 1092 - [OPTIMIZATION] On immediate write, place an ACK frame into the first 1093 buffered packet if an ACK is queued. This reduces the number of 1094 standalone ACK packets. 1095 - [OPTIMIZATION] Allow placing more than one STREAM frame from the same 1096 stream into an outgoing packet. This change minimizes the number of 1097 buffered packets required to store several small HTTP messages by 1098 virtue of allowing more than one STREAM frame from HEADERS stream in 1099 the same packet. 1100 - [OPTIMIZATION] Flush headers when writing to buffered packets. This 1101 causes the headers to be written to the same buffered packet queue, 1102 thereby improving packet utilization, especially for small HTTP 1103 messages. 1104 11052019-01-16 1106 - 1.17.14 1107 - [FEATURE] http_client can now collect stats: time to connect, TTFB, 1108 time to download, requests per seconds, and bandwidth. See -t flag. 1109 - [BUGFIX] http_client: -B, -K, and -r can be used at the same time. 1110 - [BUGFIX] http_client: do not display cert chain before each request. 1111 Now this is only done once per connection, if the handshake is 1112 successful and -a option is given. 1113 - [BUGFIX] Do not wait to dispatch on_close() after reading. If a 1114 stream is scheduled to be closed after on_read() callback returns, 1115 close it immediately instead of waiting until the end of the tick. 1116 If client creates new request from on_close() event, they will be 1117 processed in the same tick instead of waiting for the next one. 1118 - [BUGFIX] HEADERS stream is critical: always treat it with highest 1119 priority. 1120 11212019-01-10 1122 - 1.17.12 1123 - [FEATURE] http_client can now issue parallel requests in the context 1124 of a single connection. See -w option. 1125 11262019-01-03 1127 - 1.17.11 1128 - Fix strict aliasing warning in optimized compilation. 1129 11302018-12-27 1131 - 1.17.10 1132 - Fix the example program to be able to use parallel connections 1133 again. (See the -n argument.) 1134 11352018-12-18 1136 - 1.17.9 1137 - [BUGFIX] Engine: reduce minimum batch size from 256 to 4 1138 11392018-12-10 1140 - 1.17.8 1141 - [BUGFIX] Fix compilation on FreeBSD and 32-bit Linux 1142 11432018-12-03 1144 - 1.17.7 1145 - [BUGFIX] Do not unset PING alarm before ringing expired alarms. 1146 This prevented PING from ever being sent. 1147 11482018-11-29 1149 - 1.17.6 1150 - Add failsafe: resume sending packets after some time 1151 1152 The change puts a 1-second limit on the amount of time the engine 1153 will not send packets after some packets are delayed. This makes 1154 the library robust in case the user does not unblock the engine 1155 explicitly using lsquic_engine_send_unsent_packets() call. 1156 1157 - [BUGFIX] Handle corner cases in send controller when packets are 1158 a) delayed or b) dropped during repackaging. 1159 - [BUGFIX] Memory leak: destroy buffered packets during controller 1160 cleanup. 1161 11622018-11-16 1163 - 1.17.3 1164 - [BUGFIX] Do not send STOP_WAITING frames when using Q044 1165 11662018-10-19 1167 - 1.17.2 1168 - [BUGFIX] Memory leak in test_frame_rw unit test. 1169 - [BUGFIX] Parsing packets with short IETF header: do not overwrite 1170 flags. (Only a problem in unit tests -- benign otherwise.) 1171 11722018-10-16 1173 - 1.17.0 1174 - [API Change] Packet out Memory Interface (PMI) update: 1175 - Split PMI pool return into pmi_release and pmi_return 1176 - PMI callbacks take peer_ctx and is_ipv6 arguments 1177 - [BUGFIX] Fix use-after-free when certificate is updated 1178 - Silence gcc warning in optimized mode by performing useless 1179 initialization 1180 - cmake: use the standard variable CMAKE_BUILD_TYPE instead of 1181 DEVEL_MODE 1182 11832018-10-03 1184 - 1.16.0 1185 - [API Change] Add lsquic_conn_n_avail_streams() 1186 - [BUGFIX] only dispatch crypto stream read events if WANT_READ is on 1187 11882018-09-27 1189 - 1.15.0 1190 - [API Change] Add LSCONN_ST_PEER_GOING_AWAY to the list of conn statuses 1191 - [BUGFIX] free uncompressed headers correctly when error occurs 1192 11932018-09-12 1194 - 1.14.3 1195 - [BUGFIX] Do not abort conn on STREAM frame for a reset stream 1196 - [BUGFIX] Drop packets that would become empty due to repackaging. 1197 Packets on the scheduled queue may be marked for repackaging. 1198 Frames such as ACK frame that are never resent are removed from 1199 repackaged packets. We must check that the newly repackaged packet 1200 would not be empty. If it would be, it is destroyed instead and 1201 the next packet on the scheduled queue is used. Note that this 1202 change only affects the logic to return the next packet to be sent. 1203 Lost packets that are being rescheduled are already processed in 1204 this fashion. 1205 - Byteswap CID before logging it - this makes it match Chrome CIDs. 1206 (Except Q035, which is the last little-endian GQUIC version we 1207 support.) 1208 12092018-09-06 1210 - 1.14.0 1211 - [API Change] Disable packet sending if full batch cannot be sent 1212 If lsquic_packets_out_f() cannot send the whole batch, disable 1213 packet sending until lsquic_engine_send_unsent_packets() is called. 1214 - [BUGFIX] Handle case when STREAM frame does not fit. 1215 - [BUGFIX] Always allow incoming STREAM frames to overlap. Peers 1216 may send overlapping STREAM frames even if using versions older 1217 than Q043. 1218 - Custom header set fixes: 1219 - set "FIN reached" flag when custom header with FIN flag is 1220 claimed; 1221 - do not return custom header set for a reset stream. 1222 12232018-08-27 1224 1225 - 1.13.0 1226 - [FEATURE, API Change] Add ability to create custom header set 1227 objects via callbacks. This avoids reading and re-parsing 1228 headers from the stream. 1229 12302018-08-27 1231 1232 - 1.12.4 1233 - Fix memory leak when engine is destroyed 1234 - Fix memory leak in http_client 1235 - Fix gcc warning in unit tests 1236 12372018-08-22 1238 1239 - 1.12.3 1240 - [BUGFIX] Fix duplicate STREAM frame detection 1241 12422018-08-20 1243 1244 - 1.12.2 1245 - [BUGFIX] Update count of scheduled bytes when adjusting size of 1246 an already-scheduled packet. 1247 - Emit info instead of warning messages when stream is used in 1248 unexpected ways. 1249 12502018-08-17 1251 1252 - 1.12.0 1253 - [FEATURE, API Change] Add support for certificate verification 1254 12552018-08-16 1256 1257 - 1.11.1 1258 - [BUGFIX] Fix STOP_WAITING frame processing in the new Q044 code 1259 12602018-08-15 1261 1262 - 1.11.0 1263 - [FEATURE] Add support for Q044. 1264 12652018-08-09 1266 1267 - 1.10.2 1268 - [BUGFIX] Don't go over limit when creating delayed streams 1269 12702018-07-10 1271 1272 - 1.10.1 1273 - [BUGFIX] process connections after each batch of packets is read 1274 This avoids a problem of accumulating a very large list of packets 1275 (possible when speeds are high and socket's receive buffer is large) 1276 and processing it all at once. 1277 - If glibc is older than 2.17, link with rt. This is necessary for 1278 clock_getres(2). 1279 - Add version macros to lsquic.h; remove unnecessary includes. 1280 12812018-06-13 1282 1283 - [BUGFIX] allow multiple parallel connections by default 1284 1285 Use the original method of tracking connections by CIDs by default. 1286 If zero-sized CID support is turned on, connections are tracked by 1287 the address. A new connection is not created if another connection 1288 is using the same network address 1289 12902018-05-30 1291 1292 - [FEATURE, API CHANGE] Support zero-sized CIDs in received packets 1293 12942018-05-24 1295 1296 - Close connection properly when packet encryption fails 1297 12982018-05-23 1299 1300 - [BUGFIX] Do not produce packet sequence gaps due to delayed packets 1301 13022018-05-21 1303 1304 - [API Change] Add optional callback to call when handshake is done 1305 - [API Change, BUGFIX] After send failure, wait until transport available 1306 13072018-05-18 1308 1309 - [API] Expose useful lsquic_ver2str[] in lsquic.h 1310 - [BUGFIX] Do not produce packet sequence gaps due to STREAM frame elision 1311 - Improve checks of number of incoming streams limit and associated 1312 error reporting. 1313 - [BUGFIX] Command-line option `-6` now works correctly. 1314 13152018-05-16 1316 1317 - [FEATURE] DNS resolution 1318 - [BUGFIX] Frame insertion mis-ID as overlap instead of dup 1319 - http_client: fix priority range generated by -E flag 1320 13212018-05-09 1322 1323 - [FEATURE] Add support for Q043. 1324 - Support for versions Q037, Q038, Q041, and Q042 has been removed. 1325 - Fix typo in debug message. 1326 - Fix code indentation. 1327 - Add /* fallthru */ comment to stop newer gcc from complaining. 1328 - Logger: fix compilation of optimized Windows build. 1329 13302018-05-04 1331 1332 - [FEATURE] Add support for Q042. 1333 - Remove comment: MSPC is obsolete (no code changes) 1334 - Prog: use lsquic_str2ver() when processing -o version flag 1335 - Remove unused CTIM and SRBF transport parameters 1336 - Disable QUIC versions Q037 and Q038 by default 1337 - Fix Windows compilation by including compat header file in 1338 lshpack.c 1339 - Address warnings produced by newer versions of gcc 1340 - Future-proof: turn off -Werror 1341 13422018-05-02 1343 1344 - [BUGFIX] Make lsquic_conn_quic_version() available 1345 - Switch to using ls-hpack 1.1 1346 - [BUGFIX] Do not ignore stream resets after receiving FIN 1347 13482018-04-27 1349 1350 - HPACK: do not allow header block to end with table size update. 1351 13522018-04-25 1353 1354 - [BUGFIX] Do not create gap in sent packnos when squeezing delayed 1355 packets. 1356 - [BUGFIX] sendctl checks for all unacked bytes, not just retx bytes. 1357 - [BUGFIX] connections with blocked scheduled packets are not tickable 1358 for sending. 1359 - [BUGFIX] Conn is tickable if it wants to send a connection-level 1360 frame. 1361 13622018-04-23 1363 1364 - Fix busy loop: tickable must make progress. When connection is 1365 self-reporting as tickable, it must make progress when ticked. There 1366 are two issues: 1367 1. If there are buffered packets, the connection is only tickable if 1368 they can be sent out. 1369 2. A connection is tickable if there are streams on the servicing 1370 queue. When the tick occurs, we must service the stream 1371 independent of whether any packets are sent. 1372 - Fix assertion in pacer which can be incorrect under some 1373 conditions. 1374 - cmake: do not turn on address sanitizer if in Travis. 1375 13762018-04-20 1377 1378 - [BUGFIX] Fix bug in lsquic_engine_connect() exposed by yesterday's 1379 changes. 1380 13812018-04-19 1382 1383 - [BUGFIX] Add connection to Tickable Queue on stream write 1384 - cmake: use MSVC variable instead of trying to detect 1385 - engine: improve connection incref/decref logging 1386 - stream: don't ignore errors that may occur on triggered flush 1387 - connection: remove obsolete method 1388 - engine: indicate connection as tickable if previous call went 1389 over threshold 1390 13912018-04-09 1392 1393 [API Change, OPTIMIZATION] Only process conns that need to be processed 1394 1395 The API is simplified: do not expose the user code to several 1396 queues. A "connection queue" is now an internal concept. 1397 The user processes connections using the single function 1398 lsquic_engine_process_conns(). When this function is called, 1399 only those connections are processed that need to be processed. 1400 A connection needs to be processed when: 1401 1402 1. New incoming packets have been fed to the connection. 1403 2. User wants to read from a stream that is readable. 1404 3. User wants to write to a stream that is writeable. 1405 4. There are buffered packets that can be sent out. (This 1406 means that the user wrote to a stream outside of the 1407 lsquic library callback.) 1408 5. A control frame (such as BLOCKED) needs to be sent out. 1409 6. A stream needs to be serviced or delayed stream needs to 1410 be created. 1411 7. An alarm rings. 1412 8. Pacer timer expires. 1413 1414 To achieve this, the library places the connections into two 1415 priority queues (min heaps): 1416 1417 1. Tickable Queue; and 1418 2. Advisory Tick Time queue (ATTQ). 1419 1420 Each time lsquic_engine_process_conns() is called, the Tickable 1421 Queue is emptied. After the connections have been ticked, they are 1422 queried again: if a connection is not being closed, it is placed 1423 either in the Tickable Queue if it is ready to be ticked again or 1424 it is placed in the Advisory Tick Time Queue. It is assumed that 1425 a connection always has at least one timer set (the idle alarm). 1426 1427 The connections in the Tickable Queue are arranged in the least 1428 recently ticked order. This lets connections that have been quiet 1429 longer to get their packets scheduled first. 1430 1431 This change means that the library no longer needs to be ticked 1432 periodically. The user code can query the library when is the 1433 next tick event and schedule it exactly. When connections are 1434 processed, only the tickable connections are processed, not *all* 1435 the connections. When there are no tick events, it means that no 1436 timer event is necessary -- only the file descriptor READ event 1437 is active. 1438 1439 The following are improvements and simplifications that have 1440 been triggered: 1441 1442 - Queue of connections with incoming packets is gone. 1443 - "Pending Read/Write Events" Queue is gone (along with its 1444 history and progress checks). This queue has become the 1445 Tickable Queue. 1446 - The connection hash no longer needs to track the connection 1447 insertion order. 1448 14492018-04-02 1450 1451 - [FEATURE] Windows support 1452 1453 - Reduce stack use -- outgoing packet batch is now allocated on the heap. 1454 14552018-03-09 1456 1457 - [OPTIMIZATION] Merge series of ACKs if possible 1458 1459 Parsed single-range ACK frames (that is the majority of frames) are 1460 saved in the connection and their processing is deferred until the 1461 connection is ticked. If several ACKs come in a series between 1462 adjacent ticks, we check whether the latest ACK is a strict superset 1463 of the saved ACK. If it is, the older ACK is not processed. 1464 1465 If ACK frames can be merged, they are merged and only one of them is 1466 either processed or saved. 1467 1468 - [OPTIMIZATION] Speed up ACK verification by simplifying send history. 1469 1470 Never generate a gap in the sent packet number sequence. This reduces 1471 the send history to a single number instead of potentially a series of 1472 packet ranges and thereby speeds up ACK verification. 1473 1474 By default, detecting a gap in the send history is not fatal: only a 1475 single warning is generated per connection. The connection can continue 1476 to operate even if the ACK verification code is not able to detect some 1477 inconsistencies. 1478 1479 - [OPTIMIZATION] Rearrange the lsquic_send_ctl struct 1480 1481 The first part of struct lsquic_send_ctl now consists of members that 1482 are used in lsquic_send_ctl_got_ack() (in the absense of packet loss, 1483 which is the normal case). To speed up reads and writes, we no longer 1484 try to save space by using 8- and 16-bit integers. Use regular integer 1485 width for everything. 1486 1487 - [OPTIMIZATION] Cache size of sent packet. 1488 1489 - [OPTIMIZATION] Keep track of the largest ACKed in packet_out 1490 1491 Instead of parsing our own ACK frames when packet has been acked, 1492 use the value saved in the packet_out structure when the ACK frame 1493 was generated. 1494 1495 - [OPTIMIZATION] Take RTT sampling conditional out of ACK loop 1496 1497 - [OPTIMIZATION] ACK processing: only call clock_gettime() if needed 1498 1499 - [OPTIMIZATION] Several code-level optimizations to ACK processing. 1500 1501 - Fix: http_client: fix -I flag; switch assert() to abort() 1502 15032018-02-26 1504 - [API Change] lsquic_engine_connect() returns pointer to the connection 1505 object. 1506 - [API Change] Add lsquic_conn_get_engine() to get engine object from 1507 connection object. 1508 - [API Change] Add lsquic_conn_status() to query connection status. 1509 - [API Change] Add add lsquic_conn_set_ctx(). 1510 - [API Change] Add new timestamp format, e.g. 2017-03-21 13:43:46.671345 1511 - [OPTIMIZATION] Process handshake STREAM frames as soon as packet 1512 arrives. 1513 - [OPTIMIZATION] Do not compile expensive send controller sanity check 1514 by default. 1515 - [OPTIMIZATION] Add fast path to gquic_be_gen_reg_pkt_header. 1516 - [OPTIMIZATION] Only make squeeze function call if necessary. 1517 - [OPTIMIZATION] Speed up Q039 ACK frame parsing. 1518 - [OPTIMIZATION] Fit most used elements of packet_out into first 64 bytes. 1519 - [OPTIMIZATION] Keep track of scheduled bytes instead of calculating. 1520 - [OPTIMIZATION] Prefetch next unacked packet when processing ACK. 1521 - [OPTIMIZATION] Leverage fact that ACK ranges and unacked list are. 1522 ordered. 1523 - [OPTIMIZATION] Reduce function pointer use for STREAM frame generation 1524 - Fix: reset incoming streams that arrive after we send GOAWAY. 1525 - Fix: delay client on_new_conn() call until connection is fully set up. 1526 - Fixes to buffered packets logic: splitting, STREAM frame elision. 1527 - Fix: do not dispatch on_write callback if no packets are available. 1528 - Fix WINDOW_UPDATE send and resend logic. 1529 - Fix STREAM frame extension code. 1530 - Fix: Drop unflushed data when stream is reset. 1531 - Switch to tracking CWND using bytes rather than packets. 1532 - Fix TCP friendly adjustment in cubic. 1533 - Fix: do not generate invalid STOP_WAITING frames during high packet 1534 loss. 1535 - Pacer fixes. 1536 15372017-12-18 1538 1539 - Fix: better follow cubic curve after idle period 1540 - Fix: add missing parts to outgoing packet splitting code 1541 - Fix: compilation using gcc 4.8.4 1542 15432017-10-31 1544 1545 - Add APIs.txt -- describes LSQUIC APIs 1546 15472017-10-31 1548 1549 - [API Change] Sendfile-like functionality is gone. The stream no 1550 longer opens files and deals with file descriptors. (Among other 1551 things, this makes the code more portable.) Three writing functions 1552 are provided: 1553 1554 lsquic_stream_write 1555 lsquic_stream_writev 1556 lsquic_stream_writef (NEW) 1557 1558 lsquic_stream_writef() is given an abstract reader that has function 1559 pointers for size() and read() functions which the user can implement. 1560 This is the most flexible way. lsquic_stream_write() and 1561 lsquic_stream_writev() are now both implemented as wrappers around 1562 lsquic_stream_writef(). 1563 1564 - [OPTIMIZATION] When writing to stream, be it within or without the 1565 on_write() callback, place data directly into packet buffer, 1566 bypassing auxiliary data structures. This reduces amount of memory 1567 required, for the amount of data that can be written is limited 1568 by the congestion window. 1569 1570 To support writes outside the on_write() callback, we keep N 1571 outgoing packet buffers per connection which can be written to 1572 by any stream. One half of these are reserved for the highest 1573 priority stream(s), the other half for all other streams. This way, 1574 low-priority streams cannot write instead of high-priority streams 1575 and, on the other hand, low-priority streams get a chance to send 1576 their packets out. 1577 1578 The algorithm is as follows: 1579 1580 - When user writes to stream outside of the callback: 1581 - If this is the highest priority stream, place it onto the 1582 reserved N/2 queue or fail. 1583 (The actual size of this queue is dynamic -- MAX(N/2, CWND) -- 1584 rather than N/2, allowing high-priority streams to write as 1585 much as can be sent.) 1586 - If the stream is not the highest priority, try to place the 1587 data onto the reserved N/2 queue or fail. 1588 - When tick occurs *and* more packets can be scheduled: 1589 - Transfer packets from the high N/2 queue to the scheduled 1590 queue. 1591 - If more scheduling is allowed: 1592 - Call on_write callbacks for highest-priority streams, 1593 placing resulting packets directly onto the scheduled queue. 1594 - If more scheduling is allowed: 1595 - Transfer packets from the low N/2 queue to the scheduled 1596 queue. 1597 - If more scheduling is allowed: 1598 - Call on_write callbacks for non-highest-priority streams, 1599 placing resulting packets directly onto the scheduled queue 1600 1601 The number N is currently 20, but it could be varied based on 1602 resource usage. 1603 1604 - If stream is created due to incoming headers, make headers readable 1605 from on_new. 1606 1607 - Outgoing packets are no longer marked non-writeable to prevent placing 1608 more than one STREAM frame from the same stream into a single packet. 1609 This property is maintained via code flow and an explicit check. 1610 Packets for stream data are allocated using a special function. 1611 1612 - STREAM frame elision is cheaper, as we only perform it if a reset 1613 stream has outgoing packets referencing it. 1614 1615 - lsquic_packet_out_t is smaller, as stream_rec elements are now 1616 inside a union. 1617 16182017-10-12 1619 1620 - Do not send RST_STREAM when stream is closed for reading 1621 - Raise maximum header size from 4K to 64K 1622 - Check header name and value lengths against maximum imposed by HPACK 1623 - Fix NULL dereference in stream flow controller 1624 16252017-10-09 1626 1627 - Hide handshake implementation behind a set of function pointers 1628 - Use monotonically increasing clock 1629 - Make sure that retx delay is not larger than the max of 60 seconds 1630 16312017-09-29 1632 1633 - A few fixes to code and README 1634 16352017-09-28 1636 1637 - Add support for Q041; drop support for Q040 1638 16392017-09-27 1640 1641 - Fix CMakeLists.txt: BoringSSL include and lib was mixed up 1642 16432017-09-26 1644 1645 - Add support for Mac OS 1646 - Add support for Raspberry Pi 1647 - Fix BoringSSL compilation: include <openssl/hmac.h> explicitly 1648 16492017-09-22 1650 1651 - Initial release 1652