hiredis/CHANGELOG.md
2020-08-03 11:18:07 -07:00

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Markdown

## [1.0.0](https://github.com/redis/hiredis/tree/v1.0.0) - (2020-08-03)
Announcing Hiredis v1.0.0, which adds support for RESP3, SSL connections, allocator injection, and better Windows support! :tada:
_A big thanks to everyone who helped with this release. The following list includes everyone who contributed at least five lines, sorted by lines contributed._ :sparkling_heart:
[Michael Grunder](https://github.com/michael-grunder), [Yossi Gottlieb](https://github.com/yossigo),
[Mark Nunberg](https://github.com/mnunberg), [Marcus Geelnard](https://github.com/mbitsnbites),
[Justin Brewer](https://github.com/justinbrewer), [Valentino Geron](https://github.com/valentinogeron),
[Minun Dragonation](https://github.com/dragonation), [Omri Steiner](https://github.com/OmriSteiner),
[Sangmoon Yi](https://github.com/jman-krafton), [Jinjiazh](https://github.com/jinjiazhang),
[Odin Hultgren Van Der Horst](https://github.com/Miniwoffer), [Muhammad Zahalqa](https://github.com/tryfinally),
[Nick Rivera](https://github.com/heronr), [Qi Yang](https://github.com/movebean),
[kevin1018](https://github.com/kevin1018)
[Full Changelog](https://github.com/redis/hiredis/compare/v0.14.1...v1.0.0)
**BREAKING CHANGES**:
* `redisOptions` now has two timeout fields. One for connecting, and one for commands. If you're presently using `options->timeout` you will need to change it to use `options->connect_timeout`. (See [example](https://github.com/redis/hiredis/commit/38b5ae543f5c99eb4ccabbe277770fc6bc81226f#diff-86ba39d37aa829c8c82624cce4f049fbL36))
* Bulk and multi-bulk lengths less than -1 or greater than `LLONG_MAX` are now protocol errors. This is consistent
with the RESP specification. On 32-bit platforms, the upper bound is lowered to `SIZE_MAX`.
* `redisReplyObjectFunctions.createArray` now takes `size_t` for its length parameter.
**New features:**
- Support for RESP3
[\#697](https://github.com/redis/hiredis/pull/697),
[\#805](https://github.com/redis/hiredis/pull/805),
[\#819](https://github.com/redis/hiredis/pull/819),
[\#841](https://github.com/redis/hiredis/pull/841)
([Yossi Gottlieb](https://github.com/yossigo), [Michael Grunder](https://github.com/michael-grunder))
- Support for SSL connections
[\#645](https://github.com/redis/hiredis/pull/645),
[\#699](https://github.com/redis/hiredis/pull/699),
[\#702](https://github.com/redis/hiredis/pull/702),
[\#708](https://github.com/redis/hiredis/pull/708),
[\#711](https://github.com/redis/hiredis/pull/711),
[\#821](https://github.com/redis/hiredis/pull/821),
[more](https://github.com/redis/hiredis/pulls?q=is%3Apr+is%3Amerged+SSL)
([Mark Nunberg](https://github.com/mnunberg), [Yossi Gottlieb](https://github.com/yossigo))
- Run-time allocator injection
[\#800](https://github.com/redis/hiredis/pull/800)
([Michael Grunder](https://github.com/michael-grunder))
- Improved Windows support (including MinGW and Windows CI)
[\#652](https://github.com/redis/hiredis/pull/652),
[\#663](https://github.com/redis/hiredis/pull/663)
([Marcus Geelnard](https://www.bitsnbites.eu/author/m/))
- Adds support for distinct connect and command timeouts
[\#839](https://github.com/redis/hiredis/pull/839),
[\#829](https://github.com/redis/hiredis/pull/829)
([Valentino Geron](https://github.com/valentinogeron))
- Add generic pointer and destructor to `redisContext` that users can use for context.
[\#855](https://github.com/redis/hiredis/pull/855)
([Michael Grunder](https://github.com/michael-grunder))
**Closed issues (that involved code changes):**
- Makefile does not install TLS libraries [\#809](https://github.com/redis/hiredis/issues/809)
- redisConnectWithOptions should not set command timeout [\#722](https://github.com/redis/hiredis/issues/722), [\#829](https://github.com/redis/hiredis/pull/829) ([valentinogeron](https://github.com/valentinogeron))
- Fix integer overflow in `sdsrange` [\#827](https://github.com/redis/hiredis/issues/827)
- INFO & CLUSTER commands failed when using RESP3 [\#802](https://github.com/redis/hiredis/issues/802)
- Windows compatibility patches [\#687](https://github.com/redis/hiredis/issues/687), [\#838](https://github.com/redis/hiredis/issues/838), [\#842](https://github.com/redis/hiredis/issues/842)
- RESP3 PUSH messages incorrectly use pending callback [\#825](https://github.com/redis/hiredis/issues/825)
- Asynchronous PSUBSCRIBE command fails when using RESP3 [\#815](https://github.com/redis/hiredis/issues/815)
- New SSL API [\#804](https://github.com/redis/hiredis/issues/804), [\#813](https://github.com/redis/hiredis/issues/813)
- Hard-coded limit of nested reply depth [\#794](https://github.com/redis/hiredis/issues/794)
- Fix TCP_NODELAY in Windows/OSX [\#679](https://github.com/redis/hiredis/issues/679), [\#690](https://github.com/redis/hiredis/issues/690), [\#779](https://github.com/redis/hiredis/issues/779), [\#785](https://github.com/redis/hiredis/issues/785),
- Added timers to libev adapter. [\#778](https://github.com/redis/hiredis/issues/778), [\#795](https://github.com/redis/hiredis/pull/795)
- Initialization discards const qualifier [\#777](https://github.com/redis/hiredis/issues/777)
- \[BUG\]\[MinGW64\] Error setting socket timeout [\#775](https://github.com/redis/hiredis/issues/775)
- undefined reference to hi_malloc [\#769](https://github.com/redis/hiredis/issues/769)
- hiredis pkg-config file incorrectly ignores multiarch libdir spec'n [\#767](https://github.com/redis/hiredis/issues/767)
- Don't use -G to build shared object on Solaris [\#757](https://github.com/redis/hiredis/issues/757)
- error when make USE\_SSL=1 [\#748](https://github.com/redis/hiredis/issues/748)
- Allow to change SSL Mode [\#646](https://github.com/redis/hiredis/issues/646)
- hiredis/adapters/libevent.h memleak [\#618](https://github.com/redis/hiredis/issues/618)
- redisLibuvPoll crash when server closes the connetion [\#545](https://github.com/redis/hiredis/issues/545)
- about redisAsyncDisconnect question [\#518](https://github.com/redis/hiredis/issues/518)
- hiredis adapters libuv error for help [\#508](https://github.com/redis/hiredis/issues/508)
- API/ABI changes analysis [\#506](https://github.com/redis/hiredis/issues/506)
- Memory leak patch in Redis [\#502](https://github.com/redis/hiredis/issues/502)
- Remove the depth limitation [\#421](https://github.com/redis/hiredis/issues/421)
**Merged pull requests:**
- Move SSL management to a distinct private pointer [\#855](https://github.com/redis/hiredis/pull/855) ([michael-grunder](https://github.com/michael-grunder))
- Move include to sockcompat.h to maintain style [\#850](https://github.com/redis/hiredis/pull/850) ([michael-grunder](https://github.com/michael-grunder))
- Remove erroneous tag and add license to push example [\#849](https://github.com/redis/hiredis/pull/849) ([michael-grunder](https://github.com/michael-grunder))
- fix windows compiling with mingw [\#848](https://github.com/redis/hiredis/pull/848) ([rmalizia44](https://github.com/rmalizia44))
- Some Windows quality of life improvements. [\#846](https://github.com/redis/hiredis/pull/846) ([michael-grunder](https://github.com/michael-grunder))
- Use \_WIN32 define instead of WIN32 [\#845](https://github.com/redis/hiredis/pull/845) ([michael-grunder](https://github.com/michael-grunder))
- Non Linux CI fixes [\#844](https://github.com/redis/hiredis/pull/844) ([michael-grunder](https://github.com/michael-grunder))
- Resp3 oob push support [\#841](https://github.com/redis/hiredis/pull/841) ([michael-grunder](https://github.com/michael-grunder))
- fix \#785: defer TCP\_NODELAY in async tcp connections [\#836](https://github.com/redis/hiredis/pull/836) ([OmriSteiner](https://github.com/OmriSteiner))
- sdsrange overflow fix [\#830](https://github.com/redis/hiredis/pull/830) ([michael-grunder](https://github.com/michael-grunder))
- Use explicit pointer casting for c++ compatibility [\#826](https://github.com/redis/hiredis/pull/826) ([aureus1](https://github.com/aureus1))
- Document allocator injection and completeness fix in test.c [\#824](https://github.com/redis/hiredis/pull/824) ([michael-grunder](https://github.com/michael-grunder))
- Use unique names for allocator struct members [\#823](https://github.com/redis/hiredis/pull/823) ([michael-grunder](https://github.com/michael-grunder))
- New SSL API to replace redisSecureConnection\(\). [\#821](https://github.com/redis/hiredis/pull/821) ([yossigo](https://github.com/yossigo))
- Add logic to handle RESP3 push messages [\#819](https://github.com/redis/hiredis/pull/819) ([michael-grunder](https://github.com/michael-grunder))
- Use standrad isxdigit instead of custom helper function. [\#814](https://github.com/redis/hiredis/pull/814) ([tryfinally](https://github.com/tryfinally))
- Fix missing SSL build/install options. [\#812](https://github.com/redis/hiredis/pull/812) ([yossigo](https://github.com/yossigo))
- Add link to ABI tracker [\#808](https://github.com/redis/hiredis/pull/808) ([michael-grunder](https://github.com/michael-grunder))
- Resp3 verbatim string support [\#805](https://github.com/redis/hiredis/pull/805) ([michael-grunder](https://github.com/michael-grunder))
- Allow users to replace allocator and handle OOM everywhere. [\#800](https://github.com/redis/hiredis/pull/800) ([michael-grunder](https://github.com/michael-grunder))
- Remove nested depth limitation. [\#797](https://github.com/redis/hiredis/pull/797) ([michael-grunder](https://github.com/michael-grunder))
- Attempt to fix compilation on Solaris [\#796](https://github.com/redis/hiredis/pull/796) ([michael-grunder](https://github.com/michael-grunder))
- Support timeouts in libev adapater [\#795](https://github.com/redis/hiredis/pull/795) ([michael-grunder](https://github.com/michael-grunder))
- Fix pkgconfig when installing to a custom lib dir [\#793](https://github.com/redis/hiredis/pull/793) ([michael-grunder](https://github.com/michael-grunder))
- Fix USE\_SSL=1 make/cmake on OSX and CMake tests [\#789](https://github.com/redis/hiredis/pull/789) ([michael-grunder](https://github.com/michael-grunder))
- Use correct libuv call on Windows [\#784](https://github.com/redis/hiredis/pull/784) ([michael-grunder](https://github.com/michael-grunder))
- Added CMake package config and fixed hiredis\_ssl on Windows [\#783](https://github.com/redis/hiredis/pull/783) ([michael-grunder](https://github.com/michael-grunder))
- CMake: Set hiredis\_ssl shared object version. [\#780](https://github.com/redis/hiredis/pull/780) ([yossigo](https://github.com/yossigo))
- Win32 tests and timeout fix [\#776](https://github.com/redis/hiredis/pull/776) ([michael-grunder](https://github.com/michael-grunder))
- Provides an optional cleanup callback for async data. [\#768](https://github.com/redis/hiredis/pull/768) ([heronr](https://github.com/heronr))
- Housekeeping fixes [\#764](https://github.com/redis/hiredis/pull/764) ([michael-grunder](https://github.com/michael-grunder))
- install alloc.h [\#756](https://github.com/redis/hiredis/pull/756) ([ch1aki](https://github.com/ch1aki))
- fix spelling mistakes [\#746](https://github.com/redis/hiredis/pull/746) ([ShooterIT](https://github.com/ShooterIT))
- Free the reply in redisGetReply when passed NULL [\#741](https://github.com/redis/hiredis/pull/741) ([michael-grunder](https://github.com/michael-grunder))
- Fix dead code in sslLogCallback relating to should\_log variable. [\#737](https://github.com/redis/hiredis/pull/737) ([natoscott](https://github.com/natoscott))
- Fix typo in dict.c. [\#731](https://github.com/redis/hiredis/pull/731) ([Kevin-Xi](https://github.com/Kevin-Xi))
- Adding an option to DISABLE\_TESTS [\#727](https://github.com/redis/hiredis/pull/727) ([pbotros](https://github.com/pbotros))
- Update README with SSL support. [\#720](https://github.com/redis/hiredis/pull/720) ([yossigo](https://github.com/yossigo))
- Fixes leaks in unit tests [\#715](https://github.com/redis/hiredis/pull/715) ([michael-grunder](https://github.com/michael-grunder))
- SSL Tests [\#711](https://github.com/redis/hiredis/pull/711) ([yossigo](https://github.com/yossigo))
- SSL Reorganization [\#708](https://github.com/redis/hiredis/pull/708) ([yossigo](https://github.com/yossigo))
- Fix MSVC build. [\#706](https://github.com/redis/hiredis/pull/706) ([yossigo](https://github.com/yossigo))
- SSL: Properly report SSL\_connect\(\) errors. [\#702](https://github.com/redis/hiredis/pull/702) ([yossigo](https://github.com/yossigo))
- Silent SSL trace to stdout by default. [\#699](https://github.com/redis/hiredis/pull/699) ([yossigo](https://github.com/yossigo))
- Port RESP3 support from Redis. [\#697](https://github.com/redis/hiredis/pull/697) ([yossigo](https://github.com/yossigo))
- Removed whitespace before newline [\#691](https://github.com/redis/hiredis/pull/691) ([Miniwoffer](https://github.com/Miniwoffer))
- Add install adapters header files [\#688](https://github.com/redis/hiredis/pull/688) ([kevin1018](https://github.com/kevin1018))
- Remove unnecessary null check before free [\#684](https://github.com/redis/hiredis/pull/684) ([qlyoung](https://github.com/qlyoung))
- redisReaderGetReply leak memory [\#671](https://github.com/redis/hiredis/pull/671) ([movebean](https://github.com/movebean))
- fix timeout code in windows [\#670](https://github.com/redis/hiredis/pull/670) ([jman-krafton](https://github.com/jman-krafton))
- test: fix errstr matching for musl libc [\#665](https://github.com/redis/hiredis/pull/665) ([ghost](https://github.com/ghost))
- Windows: MinGW fixes and Windows Travis builders [\#663](https://github.com/redis/hiredis/pull/663) ([mbitsnbites](https://github.com/mbitsnbites))
- The setsockopt and getsockopt API diffs from BSD socket and WSA one [\#662](https://github.com/redis/hiredis/pull/662) ([dragonation](https://github.com/dragonation))
- Fix Compile Error On Windows \(Visual Studio\) [\#658](https://github.com/redis/hiredis/pull/658) ([jinjiazhang](https://github.com/jinjiazhang))
- Fix NXDOMAIN test case [\#653](https://github.com/redis/hiredis/pull/653) ([michael-grunder](https://github.com/michael-grunder))
- Add MinGW support [\#652](https://github.com/redis/hiredis/pull/652) ([mbitsnbites](https://github.com/mbitsnbites))
- SSL Support [\#645](https://github.com/redis/hiredis/pull/645) ([mnunberg](https://github.com/mnunberg))
- Fix Invalid argument after redisAsyncConnectUnix [\#644](https://github.com/redis/hiredis/pull/644) ([codehz](https://github.com/codehz))
- Makefile: use predefined AR [\#632](https://github.com/redis/hiredis/pull/632) ([Mic92](https://github.com/Mic92))
- FreeBSD build fix [\#628](https://github.com/redis/hiredis/pull/628) ([devnexen](https://github.com/devnexen))
- Fix errors not propagating properly with libuv.h. [\#624](https://github.com/redis/hiredis/pull/624) ([yossigo](https://github.com/yossigo))
- Update README.md [\#621](https://github.com/redis/hiredis/pull/621) ([Crunsher](https://github.com/Crunsher))
- Fix redisBufferRead documentation [\#620](https://github.com/redis/hiredis/pull/620) ([hacst](https://github.com/hacst))
- Add CPPFLAGS to REAL\_CFLAGS [\#614](https://github.com/redis/hiredis/pull/614) ([thomaslee](https://github.com/thomaslee))
- Update createArray to take size\_t [\#597](https://github.com/redis/hiredis/pull/597) ([justinbrewer](https://github.com/justinbrewer))
- fix common realloc mistake and add null check more [\#580](https://github.com/redis/hiredis/pull/580) ([charsyam](https://github.com/charsyam))
- Proper error reporting for connect failures [\#578](https://github.com/redis/hiredis/pull/578) ([mnunberg](https://github.com/mnunberg))
\* *This Changelog was automatically generated by [github_changelog_generator](https://github.com/github-changelog-generator/github-changelog-generator)*
## [1.0.0-rc1](https://github.com/redis/hiredis/tree/v1.0.0-rc1) - (2020-07-29)
_Note: There were no changes to code between v1.0.0-rc1 and v1.0.0 so see v1.0.0 for changelog_
### 0.14.1 (2020-03-13)
* Adds safe allocation wrappers (CVE-2020-7105, #747, #752) (Michael Grunder)
### 0.14.0 (2018-09-25)
**BREAKING CHANGES**:
* Change `redisReply.len` to `size_t`, as it denotes the the size of a string
User code should compare this to `size_t` values as well.
If it was used to compare to other values, casting might be necessary or can be removed, if casting was applied before.
* Make string2ll static to fix conflict with Redis (Tom Lee [c3188b])
* Use -dynamiclib instead of -shared for OSX (Ryan Schmidt [a65537])
* Use string2ll from Redis w/added tests (Michael Grunder [7bef04, 60f622])
* Makefile - OSX compilation fixes (Ryan Schmidt [881fcb, 0e9af8])
* Remove redundant NULL checks (Justin Brewer [54acc8, 58e6b8])
* Fix bulk and multi-bulk length truncation (Justin Brewer [109197])
* Fix SIGSEGV in OpenBSD by checking for NULL before calling freeaddrinfo (Justin Brewer [546d94])
* Several POSIX compatibility fixes (Justin Brewer [bbeab8, 49bbaa, d1c1b6])
* Makefile - Compatibility fixes (Dimitri Vorobiev [3238cf, 12a9d1])
* Makefile - Fix make install on FreeBSD (Zach Shipko [a2ef2b])
* Makefile - don't assume $(INSTALL) is cp (Igor Gnatenko [725a96])
* Separate side-effect causing function from assert and small cleanup (amallia [b46413, 3c3234])
* Don't send negative values to `__redisAsyncCommand` (Frederik Deweerdt [706129])
* Fix leak if setsockopt fails (Frederik Deweerdt [e21c9c])
* Fix libevent leak (zfz [515228])
* Clean up GCC warning (Ichito Nagata [2ec774])
* Keep track of errno in `__redisSetErrorFromErrno()` as snprintf may use it (Jin Qing [25cd88])
* Solaris compilation fix (Donald Whyte [41b07d])
* Reorder linker arguments when building examples (Tustfarm-heart [06eedd])
* Keep track of subscriptions in case of rapid subscribe/unsubscribe (Hyungjin Kim [073dc8, be76c5, d46999])
* libuv use after free fix (Paul Scott [cbb956])
* Properly close socket fd on reconnect attempt (WSL [64d1ec])
* Skip valgrind in OSX tests (Jan-Erik Rediger [9deb78])
* Various updates for Travis testing OSX (Ted Nyman [fa3774, 16a459, bc0ea5])
* Update libevent (Chris Xin [386802])
* Change sds.h for building in C++ projects (Ali Volkan ATLI [f5b32e])
* Use proper format specifier in redisFormatSdsCommandArgv (Paulino Huerta, Jan-Erik Rediger [360a06, 8655a6])
* Better handling of NULL reply in example code (Jan-Erik Rediger [1b8ed3])
* Prevent overflow when formatting an error (Jan-Erik Rediger [0335cb])
* Compatibility fix for strerror_r (Tom Lee [bb1747])
* Properly detect integer parse/overflow errors (Justin Brewer [93421f])
* Adds CI for Windows and cygwin fixes (owent, [6c53d6, 6c3e40])
* Catch a buffer overflow when formatting the error message
* Import latest upstream sds. This breaks applications that are linked against the old hiredis v0.13
* Fix warnings, when compiled with -Wshadow
* Make hiredis compile in Cygwin on Windows, now CI-tested
* Bulk and multi-bulk lengths less than -1 or greater than `LLONG_MAX` are now
protocol errors. This is consistent with the RESP specification. On 32-bit
platforms, the upper bound is lowered to `SIZE_MAX`.
* Remove backwards compatibility macro's
This removes the following old function aliases, use the new name now:
| Old | New |
| --------------------------- | ---------------------- |
| redisReplyReaderCreate | redisReaderCreate |
| redisReplyReaderCreate | redisReaderCreate |
| redisReplyReaderFree | redisReaderFree |
| redisReplyReaderFeed | redisReaderFeed |
| redisReplyReaderGetReply | redisReaderGetReply |
| redisReplyReaderSetPrivdata | redisReaderSetPrivdata |
| redisReplyReaderGetObject | redisReaderGetObject |
| redisReplyReaderGetError | redisReaderGetError |
* The `DEBUG` variable in the Makefile was renamed to `DEBUG_FLAGS`
Previously it broke some builds for people that had `DEBUG` set to some arbitrary value,
due to debugging other software.
By renaming we avoid unintentional name clashes.
Simply rename `DEBUG` to `DEBUG_FLAGS` in your environment to make it working again.
### 0.13.3 (2015-09-16)
* Revert "Clear `REDIS_CONNECTED` flag when connection is closed".
* Make tests pass on FreeBSD (Thanks, Giacomo Olgeni)
If the `REDIS_CONNECTED` flag is cleared,
the async onDisconnect callback function will never be called.
This causes problems as the disconnect is never reported back to the user.
### 0.13.2 (2015-08-25)
* Prevent crash on pending replies in async code (Thanks, @switch-st)
* Clear `REDIS_CONNECTED` flag when connection is closed (Thanks, Jerry Jacobs)
* Add MacOS X addapter (Thanks, @dizzus)
* Add Qt adapter (Thanks, Pietro Cerutti)
* Add Ivykis adapter (Thanks, Gergely Nagy)
All adapters are provided as is and are only tested where possible.
### 0.13.1 (2015-05-03)
This is a bug fix release.
The new `reconnect` method introduced new struct members, which clashed with pre-defined names in pre-C99 code.
Another commit forced C99 compilation just to make it work, but of course this is not desirable for outside projects.
Other non-C99 code can now use hiredis as usual again.
Sorry for the inconvenience.
* Fix memory leak in async reply handling (Salvatore Sanfilippo)
* Rename struct member to avoid name clash with pre-c99 code (Alex Balashov, ncopa)
### 0.13.0 (2015-04-16)
This release adds a minimal Windows compatibility layer.
The parser, standalone since v0.12.0, can now be compiled on Windows
(and thus used in other client libraries as well)
* Windows compatibility layer for parser code (tzickel)
* Properly escape data printed to PKGCONF file (Dan Skorupski)
* Fix tests when assert() undefined (Keith Bennett, Matt Stancliff)
* Implement a reconnect method for the client context, this changes the structure of `redisContext` (Aaron Bedra)
### 0.12.1 (2015-01-26)
* Fix `make install`: DESTDIR support, install all required files, install PKGCONF in proper location
* Fix `make test` as 32 bit build on 64 bit platform
### 0.12.0 (2015-01-22)
* Add optional KeepAlive support
* Try again on EINTR errors
* Add libuv adapter
* Add IPv6 support
* Remove possibility of multiple close on same fd
* Add ability to bind source address on connect
* Add redisConnectFd() and redisFreeKeepFd()
* Fix getaddrinfo() memory leak
* Free string if it is unused (fixes memory leak)
* Improve redisAppendCommandArgv performance 2.5x
* Add support for SO_REUSEADDR
* Fix redisvFormatCommand format parsing
* Add GLib 2.0 adapter
* Refactor reading code into read.c
* Fix errno error buffers to not clobber errors
* Generate pkgconf during build
* Silence _BSD_SOURCE warnings
* Improve digit counting for multibulk creation
### 0.11.0
* Increase the maximum multi-bulk reply depth to 7.
* Increase the read buffer size from 2k to 16k.
* Use poll(2) instead of select(2) to support large fds (>= 1024).
### 0.10.1
* Makefile overhaul. Important to check out if you override one or more
variables using environment variables or via arguments to the "make" tool.
* Issue #45: Fix potential memory leak for a multi bulk reply with 0 elements
being created by the default reply object functions.
* Issue #43: Don't crash in an asynchronous context when Redis returns an error
reply after the connection has been made (this happens when the maximum
number of connections is reached).
### 0.10.0
* See commit log.