Version 356:

Added error_code overload for basic_fields::insert()
Added overload for websocket::stream::get_status to query permessage-deflate status
Fixed use-after-move in calls to net::dispatch within http::basic_stream, which caused bad_executor exceptions on timeouts
Removed mutating operations in initiating functions
Fixed cancellation handling in teardown_tcp_op
Set state_ in basic_parser before calling on_finish_impl
Removed static specifier from clamp functions
Addressed -Wattributes warnings in tests
Addressed unreachable code warning in tests
Added forward declaration headers for types in beast::http namespace
Enabled http::parser to use basic_fields::insert() with error_code overload
Applied header_limit_ in http::basic_parser to trailer headers
Improved http::basic_parser to return http::error::header_limit earlier
Added support for modular boost build structure

Version 355:

awaitable examples are simplified
server-flex-awaitable example demonstrates an explicit, graceful shutdown
Add fuzzing targets
Fix overloads that are ambiguous when using default completion tokens
Fix misplaced static_assert in http::basic_fields move-assignment operator
Fix narrowing conversion in read_size_hint_db()

Version 354:

ssl_stream and flat_stream are deprecated (Use net::ssl::stream instead)
net::ssl::stream is canonical in examples and snippets
ssl_stream does not use flat_stream
Add SSL/TLS Shutdown Procedure section to documentation
Add HTTP status code 418 ("I'm a teapot")
websocket::stream::read_size_hint() does not exceed read_message_max
Fix underflow of bytes_transferred in websocket partial write operations
Fix error handling of SSL/TLS shutdown operations in examples
Fix handling of expired timers in basic_stream::ops::transfer_op
Fix ambiguity in test::basic_stream constructor overloads
Fix partial parsing of the final chunk in http::parser
Fix dereferenced null pointer warning in test::immediate_executor
Fix warnings in tests
Fix OpenSSL builds in GHA CI and Drone CI
Fix test::immediate_executor type traits
Refactor Jamfiles to limit the scope of definitions
Expand CI matrix

Version 353:

Fix unreachable code warning in buffers_cat.hpp
Fix zlib name conflicts
Status code list confirms with IANA registry
Add const_iterator to buffers_adaptor::subrange
Improve documentation

Version 352:

Fix paragraph separation issue in the documentation
Improve documentation for http::message::prepare_payload()
Strengthen the buffer contract on flat_buffer and flat_static_buffer
Add a non-allocating overload for the error category message function
Replace internal uses of beast::bind_front_handler with asio::prepend
Specialize asio::associator for bind_wrapper and bind_front_wrapper
Fix an infinite loop bug in websocker_server_awaitable.cpp
Fix the write loop in advanced server examples

Version 351:

Use the explicit type std::size_t when completing transfer_op

Version 350:

Allocation and invocation hooks are removed
detail::bind_default_executor helper is removed
Improve documentation for websocket::stream::async_write_some

Version 349:

Add support for immediate_executor
BOOST_ASIO_INITFN_AUTO_RES replaces BOOST_ASIO_INITFN_RESULT_TYPE
Update license info for work_guard
Correct handler requirements of ping/pong
Improve Drone caching
server-flex-awaitable example now resets parser
OpenSSL 1.1.1.2100 or later is required for x86
GCC 5.0 or later is required
Introduce self-hosted GitHub actions runners
Minor documentation fixes and updates

Version 348:

multiple CI fixes
jamfile uses openssl.jam
websocket uses upper case Upgrade for connection field
ssl_stream does not use BOOST_BEAST_ASYNC_TPARAM1 because of clang-16
doc updates

Version 347:

placeholder ambiguity fix.
awaitable server example fix
doc updates.

Version 346:

beast file_body & file support seek
file_body buffer size can be configured
examples & tests use context instead of coroutine
basic_stream doesn't use try-catch with no-exceptions set
error categories use numeric id
timer inside basic_stream uses the right executor
self-posting is posting to the io-object's executor
all error_codes use source_locations

Version 345:

Warning & typo fixes.

Version 344:

Internal fixes adopting to asio changes.

Version 343:

Beast IO-objects support rebinding constructors
C++20 coroutine examples

Version 342:

Support per operation cancellation

Version 341:

Expect header field with the "100-continue" is handled in upgrade.

Version 340:

buffers have a features table in the docs
buffer_ref allows using beast buffers with asio
buffer_adaptor works with multi-buffer

Version 339:

BOOST_BEAST_USE_STD_STRING_VIEW is replaced by boost/core string_view.
defining BOOST_BEAST_USE_STD_STRING_VIEW yields a deprecation warning

Version 338:

Added per message compression options.

Version 337:

Added timeout option to websocket

Version 336:

Remove incorrect ASSERT in WebSocket read.

Version 335:

Reduce size of multi_buffer.
Upgrade OS on some drone CI jobs.

Version 334:

Fix version number in CML.

Version 333:

Workaround TSAN CI bug.

Version 332:

Fix beast::zlib warnings
Improve documentation

Version 331:

Using core::string_view instead of utility::string_view
Use static_string from Boost.StaticString
Use span from Boost.Core
Fix CVE-2018-25032 in zlib streams
Add http::message_generator
Add buffers_generator
serializer::is_done is const

Version 330:

Update release notes for Boost 1.79.

Version 329:

Add missing include in file_body test.

Version 328:

Add ARM64 builds to Drone CI.

Version 327:

Fix async_base documentation link.

Version 326:

Remove GitHub stalebot.

Version 325:

WebSocket handshake response is deterministic on failure.

Version 324:

Fix open append mode for file_posix.
Fix open append mode for file_win32.
Add tests for file open in append mode.
Fix file open with append/append_existing flag on Windows.

Version 323:

Fix clang-cl UTF8 path handling for file_win32.
Fix clang-cl UTF8 path handling for file_stdio.
Add individual tests to CMake workflow.
Update CI to include gcc 11, clang 12, msvc 14.3.
Update code coverage settings.

Version 322:

Fix typo in _experimental::test::basic_stream documentation.

Version 321:

Remove test framework's dependency on RTTI.
Fix CVE-2016-9840 in zlib implementation.
Fix TLS SNI handling in websocket_client_async_ssl example.
Fix reuse of sliding window in WebSocket permessage_deflate.
Fix accept error handling in http_server_async example.
Move library-specific docca configuration to Beast.
Remove dependency on RTTI in test::stream.

Version 320:

Fix missing includes in stream_state.
Update GitHub Actions CI.

Version 319:

Update release notes for Boost 1.77.

Version 318:

Add a Boost-friendly subproject case to CMakeLists.
Remove use of POSIX-only constant.

Version 317:

Remove travis CI.
Fix Drone CI script.
Add example of reading large response body.

Version 316:

Disable GHA CI for clang-9.
Update example root certificates.

Version 315:

Documentation uses docca jam module.

Version 314:

WebSocket test is deterministic.
Add missing compilers to GHA script.

Version 313:

Fix incorrect websocket test ordering.
Fix missing check for error code after header is parsed.
Fix case where inflated content is larger than the out buffer.

Version 312:

Enable Github Actions CI.

Version 311:

Fix warning in http-server-fast.
Parenthesise all uses of min() and max().
Extend Drone MSVC tests.
Fix MSVC build error.

Version 310:

Update Release Notes.

Version 309:

Extra logic error detection in http parser.
Move Windows CI to Drone.

Version 308:

Fix compiler warning in WebSSocket async shutdown.
Remove Travis CI status.
Repoint B2 refs to new non-boostorg home.
Limit async_write instantiations in websocket ops.
Add Drone CI status.

Version 307:

Add executor rebind to test::stream.
Remove floating point arithmetic requirement.
Add cxxstd to json field.

Version 306:

Revert removal of lowest_layer_type from test stream.

Version 305:

Fix documentation build.

Version 304:

Fix C++20 coroutine tests.
Fix links to Bishop Fox Security Assessment.

Version 303:

Add Bishop Fox Security Assessment.

Version 302:

Fix assert when basic_stream used as underlying of ssl::stream with zero-length write.
Add Sec-* HTTP headers.
Fix nullptr implicit cast on fields::set().

Version 301:

Fix Travis CI bug.
Fix erroneous error when HTTP body_limit is none.
Fix unreachable code warning with MSVC.
Fix logic error in advance_server_flex.
Fix file open with append_existing flag on posix.
Websocket SSL teardown also tears down underlying TCP.
Update WebSocket examples to set TLS SNI.
Add handler tracking locations to websocket.
Add handler tracking locations to tcp teardown.
Eliminate spurious uninitialised variable warning in detect_ssl.
Add handler tracking locations to flat_stream.
Add handler tracking locations to detect_ssl.
Add handler tracking locations to icy_stream.
Add handler tracking locations to basic_stream.
Add handler tracking locations to http operations.

API Changes:

Previously, teardown and async_teardown of a websocket connection over SSL would only shut down the SSL layer, leaving the TCP layer connected. Now the SSL teardown will tear down both the SSL and TCP layers, cleanly shutting down the TCP connection and closing the socket. Should the client expect the TCP socket to remain connected, users will need to re-engineer their code.

Version 300:

Fix compile errors under Clang 3.4
Fix portability bug in websocket server sync example.

Version 299:

Fix race in http-crawl example.

Version 298:

Support BOOST_ASIO_NO_TS_EXECUTORS.
Use strand<> rather than legacy executor io_context::strand.
Use dispatch/post free functions to be independent of executor concept.
New name for polymorphic executor. Trait for detecting new executors.
Handler invoke and allocation hooks are deprecated.

Version 297:

iless and iequal take part in Heterogeneous Lookup
Fix max compile error
Deprecate string_param (API Change)

API Changes:

string_param, which was previously the argument type when setting field values has been replaced by string_view. Because of this, it is no longer possible to set message field values directly as integrals.

Users are required to convert numeric arguments to a string type prior to calling fields::set et. al.

Beast provides the non-allocating to_static_string() function for this purpose.

To set Content-Length field manually, call message::content_length.

Version 296:

Remove buffers_adapter.hpp (API Change)
Remove zlib error invalid_code_lenths(sic) (API Change)
Remove core/type_traits.hpp (API Change)
Remove reset function from flat_static_buffer (API Change)
Remove mutable_data_type from Dyanmic Buffers (API Change)
Remove deprecated lowest_layer from test::stream
Remove handler_pointer (API Change)
Remove websocket::role_type (API Change)
Remove accept_ex and handshake_ex variants (API Change)
Rename to BOOST_BEAST_ALLOW_DEPRECATED (API Change)

API Changes:

The file core/buffers_adapter.hpp has been removed along with the deprecated alias typename buffers_adapter. Affected programs should use core/buffers_adapator.hpp and the type buffers_adaptor.
The error code enum invalid_code_lenths was a synonym of invalid_code_lengths. Affected programs should be modified to use invalid_code_lengths.
The core/type_traits.hpp public header has been removed and along with it the type trait is_completion_handler. Beast uses the CompletionHandler correctness checks provided by Asio. In a c++20 environment, these convert to concept checks.
The reset function has been removed from flat_static_buffer. Use the clear function instead.
Code that depends on mutable_data_type should be refactored to use mutable_buffers_type. Classes affected are:
- buffers_adaptor
- flat_buffer
- flat_static_buffer
- multi_buffer
- static_buffer
handler_ptr has been removed. Users should use net::bind_handler and/or bind_front_handler instead.
websocket::role_type has been removed. Users should use beast::role_type instead.
The following deprecated functions have been removed:
- websocket::async_accept_ex
- websocket::async_handshake_ex
- websocket::accept_ex
- websocket::handshake_ex

Programs still using these names should be refactored to use the decorator feature and the remaining handshake and accept functions.

The macro BOOST_BEAST_NO_DEPRECATED will no longer be noticed by Beast. The only way to enable deprecated functionality is now the macro BOOST_BEAST_ALLOW_DEPRECATED which is undefined by default. That is, all deprecated behaviour is disabled by default.

Version 295:

Parser body_limit is optional (API Change)
Fix basic_stream expires_after (API Change)
Fix FILE namespace qualification

API Changes:

The signature of basic_parser<>::body_limit(n) has changed. It now accepts an optional std::uint64_t. The caller may indicate that no body limit is required by calling body_limit(boost::none). The default limits remain in place in order to maintain 'safe by default' behaviour.
basic_stream::expires_after used to take a nanosecond duration type argument. This required users on systems where the steady_clock::duration_type was less accurate to explicity duration_cast when calling this function, making code non-portable. The duration type is now that of the embedded steady_clock.

Version 294:

Fix FILE namespace qualification
Fix http read bytes_transferred (API Change)

API Changes:

The following functions did not previously report the number of bytes consumed by the HTTP parser:

http::read
http::read_header
http::read_some
http::async_read
http::async_read_header
http::async_read_some

As of now, the bytes_transferred return value will indicate the number of bytes consumed by the parser when parsing an http message.

Actions Required:

Modify calling code which depends on the value returned from these functions.

Version 293:

Fix async_connect documentation
Fix assert in websocket
No automatic User-Agent in WebSocket

Behaviour Changes:

No automatic User-Agent in WebSocket Beast websocket streams will no longer automatically set the User-Agent HTTP header during client handshake. This header is not required by the WebSocket standard. If this field is required, user code may set it in the decorator

Version 292:

Fix compile errors on Visual Studio with /std:c++latest
Fix standalone compilation error with std::string_view
OpenSSL 1.0.2 or later is required
Fix c++20 deprecation warning in span_body

Version 291:

Test websocket with use_awaitable
Test http write with use_awaitable
Test http read with use_awaitable
Fix use buffered_read_stream with use_awaitable
Implement is_completion_token_for trait
Test use_awaitable with basic_stream
Fix async_detect_ssl with use_awaitable
Add clang coroutines-ts to circleci config

Version 290:

Travis build host now bionic
Update Release Notes

Version 289:

Fix Host header in websocket examples

Version 288:

Fix Content-Length parsing
Update credits

Version 287:

Remove CODE_OF_CONDUCT.md
Refactor websocket read
Correct buffer_bytes documentation
Fix examples to dispatch to strand
Ensure basic_stream::close will not throw

Version 286:

Refactor multi_buffer
Refactor buffers_adapter
Refactor static_buffer
Refactor flat_buffer
Refactor flat_static_buffer
Fix missing include in sha1.hpp
Fix ostream warning
Field digest is endian-independent
update broken links in README
Fix ostream flush

API Changes:

Nested const and mutable buffer types for all Beast dynamic buffers are refactored. Affected types:
- buffers_adapter
- flat_buffer
- flat_static_buffer
- multi_buffer
- static_buffer
Nested mutable_data_type in Beast dynamic buffers is deprecated:

Changes Required:

Use nested mutable_buffers_type instead of mutable_data_type, or define BOOST_BEAST_ALLOW_DEPRECATED

Version 285:

Translate some win32 errors to net error codes
enable circleci integration
flat_buffer shrink_to_fit is noexcept
moved-from dynamic buffers do not clear if different allocator
fix erase field

Version 284:

fix compilation macro documentation
examples use strands correctly
update root certificates in examples
clarify end-of-file behaviour in File::read docs
file_body returns short_read on eof during read
fix bug in win32 file_body

Version 283:

ostream_buffer satisfies preconditions of DynamicBuffer_v1::commit
Add accessor function to File member of basic_file_body

Version 282:

Use superproject docca
Fix release build of docs
file_win32 supports UTF-8 paths
file_stdio supports unicode paths

Version 281:

Travis builds docs
Fix echo-op test
file_win32 bodies respect http::serializer::split

Version 280:

Fix non-msvc cmake
Use docca master branch

Version 279:

Use regular throw in test
Fix pragma warning

Version 278:

Use regular throw in test

Version 277:

Update release notes

Version 276:

https_get example sends the Host header
Fix async_close error code when async_read times out
Refactor zlib tests and fix enum typo

Version 275:

Async init-fns use the executor's default token
Add basic_stream::rebind_executor
Use automatically deduced return types for all async operations
Support Concepts for completion token params

Version 274:

Fix leftovers in basic_parser corner case

Version 273:

Squelch spurious websocket timer assert
Use the executor type in basic_stream timer

Version 272:

Add BEAST_THROWS
Add zlib tests and fixes

Version 271:

Add HTTP async client with system_executor example
Add WebSocket async client with system_executor example
Fix data race in HTTP server examples
Fix data race in WebSocket examples

Version 270:

Silence unused variables
Fix typo

Version 269:

Fix /permissive- missing include
Add test

Version 268:

root_certificates.hpp is not for production

Version 267:

Add package for Travis config
Fix signed/unsigned mismatch in file_stdio::seek
basic_stream dtor cannot throw
cmake: check policy first
Add default dtors to satisfy -Wnon-virtual-dtor
Multiple I/O of the same type is not supported

Version 266:

Fix some missing deduced return types in the docs

Version 265:

Fix outgoing websocket message compression

Version 264:

Handle overflow in max size calculation in basic_dynamic_body
Fix unused variable warnings in tests
Fix missing initializer warning in basic_fields
Remove unused functions in impl/static_string.hpp
Fix unused variable warning in multi_buffer
Fix header-only compilation errors in some configurations
Workaround for miscompilation in MSVC 14.2

Version 263:

Update documentation

Version 262:

Fix deallocate in multi_buffer

Version 261:

Deduplicate websocket::read_size_hint definition
Fix UB in websocket read tests
Remove redundant includes in websocket
Simplify websocket::detail::prng
Don't over-allocate in http::basic_fields
Fix multi_buffer allocation alignment
Tidy up buffers_range

Version 260:

More split compilation in rfc7230.hpp
Qualify calls to beast::iequals in basic_parser.ipp
More split compilation in websocket/detail/mask.hpp
Cleanup transitive includes in beast/core/detail/type_traits.hpp
Simplify generation of sec-websocket-key
Move detail::base64 helpers to tests
Remove redundant includes in core

Version 259:

Reduce the number of instantiations of filter_token_list
Remove the use of static_string from http::fields
Add gcc-9 to AzP CI test matrix
Enable split compilation in http::basic_fields
Remove redundant instation of static_string in websocket
Remove redundant use of asio::coroutine in flat_stream
Remove unused includes from test::stream
Move char_buffer into a separate file
Fix coverage collection in AzP CI
Improve performance of http::string_to_verb
Replace uses of net::coroutine with asio::coroutine
Replace uses of net::spawn with asio::spawn
Use beast::read_size in detail::read

Version 258:

Fix separate compilation in CI
Fix clang inititalization warning in websocket
Remove redundant use of yield_to in parser tests
Add VS 2019 AzP CI matrix item
Clean up typo in chat websocket javascript client

Version 257:

Add b2 features for compile-time options used in testing
Remove redundant dependencies in http/server/fast example
Remove experimental/unit_test/thread.hpp
Use if statement in basic_stream::transfer_op
Fix flat_buffer copy members

Version 256:

Remove uses of the deprecated buffers function
Remove uses of deprecated methods in websocket tests
Remove redundant use of static_string
Remove redundant template in service_base
Expand CI matrix using Azure Pipelines
Make chat websocket javascript client more user friendly
allocator_traits::construct is used for user-defined types
Add 1-element specialization for buffers_cat
Fix buffers_cat iterator tests
Don't pessimize-move
Use steady_timer type
Preserve operation_aborted on partial message

Version 255:

Add idle ping suspend test
Fix moved-from executor in idle ping timeout

Version 254:

Fix data race in test::stream::connect
Fix UB in websocket close tests
Fix uninitalized memory use in deflate_stream
Fix gcc-8 warning in websocket::stream

Version 253:

Fix async_detect_ssl handler type
member get_executor const-correctness
Fix min/max on MSVC
Relax requirements for vector_body

Version 252:

More std::string_view fixes
CI copies to libs/beast

Version 251:

Clean up CI scripts
detect_ssl uses bool
launder pointers
Fix compilation on MSVC with std::string_view
Replace static_string in parser

Version 250:

Use SaxonHE in reference generation
Cleanup endianness conversions
Set parser status and flags even if body_limit_ has been reached

Version 249:

Move friend function template definition

Version 248:

Don't use a moved-from handler

Version 247:

Fix async_base immediate completion

Version 246:

decorator ctor is explicit

Version 245:

decorator constructor is constrained

Version 244:

Tidy up declval in some traits
Fix websocket keep-alive ping expiration

Version 243:

Fix some typos
Tidy up file_stdio for VS2015
Fix http::message constructor constraint

Version 242:

test::stream has deprecated lowest_layer for ssl
MSVC uses ::fopen_s
Fix http::message constructor constraint
Check defined(BOOST_MSVC)

Version 241:

Tidy up a doc code snippet
basic_parser::content_length is stable (API Change)

Version 240:

Fix ssl_stream teardown

Version 239:

More split compilation in HTTP

Version 238:

Refactor Jamfiles to work with release layout

Version 237:

cmake: Use static libs to speed up builds

Version 236:

root_certificates.hpp: brought in the server certificate

Version 235:

Fix self-assignment warning in buffer test
Jamfile cleanup

Version 234:

Don't link to OpenSSL needlessly (bjam)
HTTPS URLs in README.md

Version 233:

Check ANDROID instead
Use secure TLS/SSL versions

Version 232:

Fix close_socket for net::basic_socket changes
Fix file_win32_write_op async initiation
Fix basic_stream lowest_layer for ssl

Version 231:

Doc section names are stable
Add missing include
Constrain to_static_string to integers

Version 230:

Don't use dynamic_buffer_ref
Remove dynamic_buffer_ref
Fix completion handler invocation signatures

Version 229:

Rename to buffer_bytes
Tidy up examples
detect_ssl returns a bool
Fix stable_async_base example

API Changes:

handler_ptr is deprecated

Actions Required:

Replace use of handler_ptr with stable_async_base and allocate_stable.

Version 228:

Fix UB in decorator:
Sync up convenience headers
The Fields concept is deprecated (API Change)
Fix includes.xsl for newer doxygen
Tidy up quick reference
SSL teardowns are in an associated namespace

Version 227:

Fix decorator for certain sizes

Version 226:

Support -fno-exceptions
make_strand is in net::
Fix HTTP parser static string calculation
Move parser definitions to .ipp
Appveyor uses msvc-14.0

Version 225:

Tidy up an unused function
Fix wsload jamfile
Examples use flat_buffer
Remove session_alloc (API Change)

Actions Required:

Don't use session_alloc

Version 224:

Remove extraneous error check in advanced-server-flex
Advanced servers use HTTP parser interfaces for reading
Reusing an HTTP parser returns an error

Version 223:

Add test::stream::service
Add websocket service
Pausation abandoning test
Destroy abandoned websocket ops on shutdown

Version 222:

stream_base::timeout::suggested is a nested function

Version 221:

Rename to async_base, stable_async_base
role_type is in boost/beast/core/role.hpp (API Change)
Cleanup in test::stream internals
Pass references as pointers to async_initiate

Actions Required:

Include <boost/beast/core/role.hpp> or define BOOST_BEAST_ALLOW_DEPRECATED=1

Version 220:

Documentation and release notes

Version 219:

More split definitions in test::stream
Visual Studio 2017 minimum requirement for Windows
Better treatment of SSL short reads
ssl_stream is a public interface
basic_parser is abstract, not CRTP (API Change)
OpenSSL is required for tests and examples

Version 218:

detect_ssl, async_detect_ssl are public interfaces
Add OpenSSL installation/setup instructions
Enable split Beast compilation for tests

Version 217:

websocket idle pings
RatePolicy documentation
Pass strand to async_accept
Fix file_body_win32
Use async_initiate
Check BOOST_NO_CXX11_THREAD_LOCAL
Fast prng is pcg

Version 216:

Refactor websocket::stream operations
Add websocket::stream timeouts
Use suggested timeouts in Websocket examples
Add make_strand
Add RatePolicy to basic_stream
Use async_initiate in basic_stream
basic_stream connects are members
Beast supports latest Asio changes (API Change)
WebSocket Decorator is a socket option (API Change)
Overloads of the following functions which accept a Decorator are deprecated:
- accept, accept_ex
- handshake, handshake_ex
- async_accept, async_accept_ex
- async_handshake, async_handshake_ex

Actions Required:

Code which passes decorator to any websocket::stream member function should call stream::set_option instead with a newly constructed stream_base::decorator object containing the decorator. Alternatively, the macro BOOST_BEAST_ALLOW_DEPRECATED may be defined to 1.
Fix compilation errors required by Asio changes

Version 215:

basic_stream uses boost::shared_ptr
Remove bind_back_handler
bind_front_handler works with member functions
Examples use bind_front_handler
Add experimental test/handler.hpp
Rename to async_op_base::invoke_now
Add async_op_base::invoke
Remove CppCon2018 example
Examples use ssl_stream

Version 214:

Handler binders use the associated allocator
Add detail::bind_continuation
Rewrite the echo-op example

Version 213:

Fix posix_file::close handling of EINTR
basic_stream subsumes stranded_stream:
Use timeouts in HTTP server examples
Use timeouts in HTTP client examples
Use tcp_stream in WebSocket client examples
Use tcp_stream in WebSocket server examples
Use tcp_stream, HTTP timeouts in advanced servers

Version 212:

dynamic_buffer_ref tests and tidy
flat_stream tests and tidy
stranded_socket tests and tidy
buffers_front tests
Improved websocket stream documentation

Version 211:

close_socket is in stream_traits.hpp
Improvements to test::stream
Add stranded_stream
Add flat_stream
flat_buffer::clear preserves capacity
multi_buffer::clear preserves capacity
Fixes to rfc7230

Version 210:

Tidy up read implementation
Fix stable_async_op_base javadoc
Better handling of stream timeouts
Add stream_traits.hpp
Add executor_type trait
Fix hexadecimal string conversion table
is_completion_handler, type_traits.hpp are deprecated
Fixes to test::stream::async_read

API Changes:

Stream traits are now in stream_traits.hpp
is_file is now in file_base.hpp
is_completion_handler is deprecated

Actions Required:

Include stream_traits.hpp as needed
Include file_base.hpp as needed
Use std::is_invocable instead of is_completion_handler

Version 209:

Faster http::string_to_field
async_echo supports move-only handlers
test::stream maintains a handler work guard
Qualify buffer_copy, don't qualify buffer_size
Add dynamic_buffer_ref
Refactor quickref.xml
Add buffer_size

Version 208:

Add get_lowest_layer free function
Add lowest_layer_type metafunction
Add close_socket, beast_close_socket customization
Doc work

Version 207

Send from the strand
Pass the correct handler in basic_timeout_stream

API Changes:

lowest_layer is removed

Actions Required:

Remove lowest_layer and lowest_layer_type from user-defined streams.
Use the get_lowest_layer free function and the lowest_layer_type trait as needed.

Version 206

Clear error codes idiomatically
websocket stream uses shared_ptr<impl_type>
Add websocket-chat-multi example

Version 205

Doc work
Add detail/soft_mutex.hpp
Add detail/prng.hpp

Version 204

Add basic_timeout_stream
Unit test macros use the global suite
Doc work

Version 203

Update networking refresher doc
Include error code in call to set_option
saved_handler is a public interface
Use new saved_handler in websocket
session_alloc is thread-safe
examples use flat_buffer
parse_until is not static
Boost.System is header-only

Version 202

Use cxxstd instead of cxxflags
Update coverage badge images
Tidy up basic_stream_socket docs
Refactor async_op_base
Use async_op_base
async_op_base is a public interface
Add tests for bind_back_handler
Add tests for async_op_base

Version 201

Decay bound arguments in handler wrapper parameters
Add bind_back_handler
Tidy up default-constructed iterators
Add core errors and conditions
New basic_stream_socket

Version 200

Don't include OpenSSL for core snippets
Tidy up msvc-14 workaround in multi_buffer
buffers_cat fixes and coverage
Refactor buffers_adaptor
Refactor buffers_range
Fix and refactor buffers_cat
Refactor buffers_prefix
Add const and mutable buffer sequence traits
Add buffers_iterator_type trait
Use new buffer traits, remove old unused traits
Optimize for size on buffers_cat preconditions
Refactor buffers_suffix
Tidy up flat_buffer tests
Fix ostream prepare calculation for low limits
Tidy up flat_static_buffer tests
Add more tests for dynamic buffers
Tidy up multi_buffer
Refactor ostream
Refactor static_buffer
HTTP tidying
Adjust static_asio lib options in Jamfile
Add type_traits tests
Add buffers_range_ref (replaces reference_wrapper parameter)

API Changes:

buffers_adaptor replaces buffers_adapter (rename)
make_printable replaces buffers (rename)
Remove file_mode::append_new

Actions Required:

Replace buffers_adapter.hpp with buffers_adaptor.hpp, and replace buffers_adapter with buffers_adaptor. Or, define BOOST_BEAST_ALLOW_DEPRECATED
Replace call sites to use make_printable instead of buffers, and also include make_printable.hpp instead of ostream.hpp.
Replace file_mode::append_new with file_mode::append or file_mode::append_existing instead of file_mode::append_new

Version 199:

Workarounds for msvc-14
Fix Appveyor badge links

Version 198:

flat_buffer improvements
multi_buffer improvements
static_buffer improvements
flat_static_buffer_improvements
saved_handler maintains a work_guard (websocket)
Add buffer_traits.hpp, buffers_type
Tidy up experimental files
Tidy up core files
Fix bind_handler, bind_front_handler
Improved handler bind wrapper tests

API Changes:

Files return errc::bad_file_descriptor
flat_static_buffer::reset is deprecated

Actions Required:

Callers checking for errc::invalid_argument from calls to file APIs should check for errc::bad_file_descriptor instead.
Replace calls to flat_static_buffer::reset with flat_static_buffer::clear

Version 197:

Improvements to echo-op example
Crawler example clears the response before each read
Use a struct instead of a pair in flat_stream (experimental)

API Changes:

Refactor HTTP operations

Actions Required:

Callers depending on the return value of http::read or http::async_read overloads should adjust the usage of the returned value as needed.

Version 196:

Tidy up calls to placement new
Remove unused type_traits
Simplify handler_ptr

Version 195:

net is a namespace alias for boost::asio
Simplify multi_buffer and static_buffer sequences
Documentation work

Version 194:

http::async_read returns the right byte count on error
Add net namespace alias
Don't use-after-free in test
Tidy up ssl_stream (experimental)
Dynamic buffer improvements
Saved handlers are dispatched

Version 193:

Update ssl_stream signatures for networking changes
Fix test::stream async_result transformation
Tidy up test::stream
Enable explicit instantiation of websocket::stream

Version 192:

Use mp11::integer_sequence
Tidy up warnings and deprecated usage
http::message is not-a boost::empty_value
Fix link in docs
Fixes to timeout services (experimental)

Version 191:

Add bind_front_handler
Use bind_front_handler
Simplify some type traits
Use lean_tuple in buffers_cat
Use lean_tuple in bind_handler, bind_front_handler
Use mp11 in detail::variant
Fix buffers_cat uninitialized warning
Fix static_string uninitialized warning
Fix warning in is_ssl_handshake

Version 190:

Add missing includes to convenience headers
Unit test framework is experimental
Add buffers_range
Rename experimental directory
Improve compilation of tests for continuous integration
Fix visibility warnings in test

Version 189-hf1:

Fix broken doc link
example/cppcon2018 only requires C++11

Version 189:

Add CppCon2018 chat server example and video

Version 188:

Remove extraneous strand from example
Add missing include in http/read.ipp
Test for gcc warning bug
Fix a spurious gcc warning

Version 187:

Add experimental timeout_socket
Fix warning in file tests
Fix uninitialized comparison in buffers iterator
Partial support for BOOST_NO_EXCEPTIONS
Fix a spurious gcc warning
Test for gcc warning bug
Add missing include
Remove extraneous strand from example

Version 186:

basic_fields uses intrusive base hooks
Fix parsing of out-of-bounds hex values

Version 185:

Remove extraneous function
Fix some typos
Add BOOST_BEAST_USE_STD_STRING_VIEW
Fix timer on websocket upgrade in examples

Version 183:

Fix a rare case of failed UTF8 validation
Verify certificates in client examples
Use boost::empty_value
Workaround for http-server-fast and libstdc++

Version 182:

Silence ubsan false positive

Version 181:

Fix parse_dec algorithm
Add parse_dec tests

Version 180:

Fix http_server_stackless_ssl.cpp example

Version 179:

Use the exchange() idiom in move constructors
Most members of std::allocate are deprecated in C++17
Remove some unused variables

Version 178:

Use static_cast instead

Version 177:

Add test for issue #1188
Set /permissive-
Check error in example set_option

Version 176:

Tidy up Quick Reference
Fix array end calculation in utf8 assertion
WebSocket masks use secure PRNG by default

Version 175:

Fix initialization warning

Version 174:

Fix Fields, FieldsWriter concept docs
Fix BodyReader constructor requirements doc

Version 173:

Remove Autobahn testsuite doc note
Fix buffers_adapter iterator value type
Fix buffers_adapter max_size
Fix buffers_prefix iterator decrement
buffers_adapter improvements
Add icy_stream Shoutcast stream filter

Version 172:

Tidy up websocket stream javadocs
Fix move-only arguments in bind_handler
Fix http::parser constructor javadoc
Tidy up test::stream javadocs
Tidy up composed operation doc

Version 171:

Add handler_ptr::has_value
Remove spurious assert
Fix unused variable warning

Version 170:

Add flat_stream to experimental
Add ssl_stream to experimental
Add test::error to experimental
Add test::fail_count to experimental
Add test::stream to experimental
Use a shared string for example HTTP server doc roots
Remove deprecated serializer::reader_impl()
Remove deprecated Body reader and writer ctor signatures
Add is_mutable_body_writer metafunction
Add const and non-const overloads for message based http writes
Use the root certificate which matches the fingerprint

Version 169:

Use buffers_to_string in tests
Use boost::void_t
Refactor HTTP write_op implementation
Use fully qualified namespace in BOOST_BEAST_HANDLER_INIT
New flat_stream example class
Use flat_stream in ssl_stream example code

Version 168:

Use executor_work_guard in composed operations
Revert verb.ipp change which caused spurious warnings
Fix race in advanced server examples

Version 167:

Revert: Tidy up calls to post()

Version 166:

Use boost::is_convertible as a workaround

Version 165:

Fix BOOST_NO_CXX11_ALLOCATOR check

Version 164:

Fix masking on continuation frames
Add Access-Control-Expose-Headers field constant

Version 163:

Tidy up calls to post()
Fix narrowing warnings

Version 162:

Add asio_handler_invoke overloads for stream algorithms
Improve websocket::stream::control_callback javadoc

Version 161:

Don't copy the handler in write_some_op
Add move-only handler tests
Fix handler parameter javadocs

Version 160:

Examples clear the HTTP message before reading

Version 159:

Fix typo in release notes
Safe treatment of zero-length string arguments in basic_fields
Some basic_fields operations now give the strong exception guarantee

Version 158:

Tidy up end_of_stream javadoc
Tidy up websocket docs
Examples set reuse_address(true)
Advanced servers support clean shutdown via SIGINT or SIGTERM
DynamicBuffer input areas are not mutable
Tidy up some documentation

API Changes:

get_lowest_layer is a type alias

Actions required:

Replace instances of typename get_lowest_layer<T>::type with get_lowest_layer<T>.

Version 157:

Fix teardown for TIME_WAIT
Fix big-endian websocket masking

Version 156:

Don't use typeid
Add release notes to documentation
Fix stale link for void-or-deduced

Version 155:

Fix memory leak in advanced server examples
Fix soft-mutex assert in websocket stream
Fix fallthrough warnings
Tidy up bind_handler doc

Version 154:

Type check completion handlers
bind_handler doc update
bind_handler works with boost placeholders

Version 153:

Remove BOOST_VERSION checks
Use make_error_code for setting an error_code from errc
Use boost::winapi::GetLastError() consistently
Update README.md for branches
Avoid string_view::clear
Fix iterator version of basic_fields::erase
Fix use-after-move in example request handlers
Add Bishop Fox interview media

Version 152:

Refactor detect_ssl_op
Disable gdb on Travis for Meltdown

WebSocket:

Redistribute the read tests in the translation units
Refactor error headers
Add WebSocket error conditions

API Changes:

Refactor WebSocket errors (API Change):

Actions Required:

Code which explicitly compares error_code values against the constant websocket::error::handshake_failed should compare against websocket::condition::handshake_failed instead.
Code which explicitly compares error_code values against the constant websocket::error::failed should compare against websocket::condition::protocol_violation instead.

Version 151:

Sanitizer failures are errors
Depend on container_hash
Fix high-ASCII in source file

WebSocket:

Control callback is invoked on the execution context
Add stream_fwd.hpp
Remove unnecessary include

API Changes:

http::parser is not MoveConstructible
permessage-deflate is a compile-time feature

Version 150:

handler_ptr tests
Documentation

API Changes:

serializer::reader_impl is deprecated

Actions Required:

Call serializer::writer_impl instead of reader_impl

Version 149:

built-in r-value return values can't be assigned
Tidy up ssl_stream special members
Fix CMakeLists.txt variable
Protect calls from macros
pausation always allocates
Don't copy completion handlers
handler_ptr is move-only
Fix Travis memory utilization

API Changes:

handler_ptr gives the strong exception guarantee

Actions Required:

Change the constructor signature for state objects used with handler_ptr to receive a const reference to the handler.

Version 148:

Install codecov on codecov CI targets only
Update reports for hybrid assessment
Handle invalid deflate frames

Version 147:

Don't use boost::string_ref
Use iterator wrapper in detail::buffers_range

HTTP:

Tidy up basic_fields exception specifiers

WebSocket:

control callback is copied or moved
Send idle pings in advanced servers

Version 146:

Fix some typos
Faster ascii_tolower
Documentation tidying
Fix typo in examples documentation
Add detail::aligned_union and tidy up
Use variant in buffers_cat_view

API Changes:

Remove unintended public members of handler_ptr

Version 145:

Rename some detail functions
Refactor basic_fields allocator internals
Refactor HTTP async read composed operations
null_buffers is deprecated
Version 124 works with Boost 1.65.1 and earlier
basic_fields does not support fancy pointers

Version 144-hf1:

Update reports for hybrid assessment
Handle invalid deflate frames
Install codecov on codecov CI targets only

Version 144:

Fix websocket permessage-deflate negotiation

Version 143:

Fix autobahn report link

Version 142:

Warn about upcoming API changes to certain concepts
Fix name typo in http write test

Version 141:

Tidy up some documentation

Version 140:

Fix some integer warnings in 64-bit builds
Fix utf8_checker test failures
Fix signature for async_read_some, and tests
Tidy up basic_parser
Some basic_fields special members are protected

Version 139:

Revisit boost library min/max guidance

Version 138:

Tidy up some documentation

Version 137:

ConstBufferSequence mandates pointer equivalence
Add FieldsWriter constructor requirement
Tidy up some documented constructor syntax

Version 136:

Tidy up message doc image

Version 135:

Fix typo in example server help text

Version 134:

Add static_buffer_base default constructor definition

Version 133:

Remove const&& overload of message::body

Version 132:

Tidy up project folders in CMakeLists.txt
Rename Cmake variables for clarity
Add ref-qualified overloads for message::body
Tidy up FieldsReader doc

API Changes:

Fields::writer replaces Fields::reader
BodyReader and BodyWriter names are swapped

Actions Required:

Rename reader to writer for user defined Fields
Swap the reader and writer names for user defined Body types
Swap use of is_body_reader and is_body_writer

Version 131:

basic_fields returns const values
Set SNI hostname in example SSL clients

Version 130:

Tidy up fallthrough warning
Remove cxx11_sfinae_expr build requirement from tests

Version 129:

Add autobahn test report to doc
Documentation tidying
Fix prepare_payload: chunked is HTTP/1.1

Version 128:

Update doc links
Add explicit-failures-markup.xml

HTTP:

Add message::need_eof
Use message::need_eof in example servers
Use synchronous writes in chunk output example

WebSocket:

Fix utf8 validation for autobahn
Temporarily disable utf8 validation tests
Tidy up fast websocket server host names

API Changes:

Remove serializer::keep_alive
Remove serializer::chunked
Add has_content_length_impl to Fields
Add message::has_content_length
Rename some basic_parser observers

Actions Required:

Call message::keep_alive instead of serializer::keep_alive
Call serializer::get::chunked instead of serializer::chunked
Implement has_content_length_impl for user-defined Fields
Remove the "is_" prefix from call sites invoking certain basic_parser members

Version 127:

Add BOOST_BEAST_NO_POSIX_FADVISE
Version command line option for HTTP client examples
More Jamfile compiler requirements for tests

Version 126:

Add CppCon2017 presentation link
Update README.md
Update stream write documentation for end of stream changes
Tidy up unused variable warnings
Don't return end_of_stream on win32 file body writes
Fix doc typo
Fix shadowing in session_alloc
Fix executor type compilation
Add Travis tests with the default compilers
Update Boost.WinAPI usage to the new location and namespace.
Fix buffered_read_stream async_read_some signature

Version 125:

API Changes:

Update for Net-TS Asio

Actions Required:

Use BOOST_ASIO_HANDLER_TYPE instead of handler_type
Use BOOST_ASIO_INITFN_RESULT_TYPE instead of async_result
Use boost::asio::async_completion
Use boost::asio::is_dynamic_buffer
Use boost::asio::is_const_buffer_sequence
Use boost::asio::is_mutable_buffer_sequence
boost::asio::associated_allocator_t replaces handler_alloc

Version 124:

Fix for a test matrix compiler
Fix basic_fields javadoc

API Changes:

http write returns success on connection close

Actions Required:

Add code to servers to close the connection after successfully writing a message where message::keep_alive() would return false.

Version 123:

Use unit-test subtree
Fix spurious race in websocket close test
Check compiler feature in Jamfile
Clear previous message fields in parser

Version 122:

Add test for issue 807
assert on empty buffer in websocket read
Fix zlib symbol conflicts
CMake 3.5.1 is required
config.hpp is not a public header
Add missing case in error test

Version 121:

Add test for issue 802
Fix enum and non-enum in conditional exp. warning

Version 120:

Fix spurious strand_ in advanced_server_flex
OpenSSL targets are optional (CMake)

Version 119:

Tidy up doc badge links

Version 118:

file_win32 opens for read-only in shared mode
Remove unused strands in server examples
Update build instructions
Doc root is at index.html

HTTP:

Fix writing header into std::ostream

Version 117:

Add buffers_to_string

API Changes:

buffers_suffix replaces consuming_buffers
buffers_prefix replaces buffer_prefix
buffers_prefix_view replaces buffer_prefix_view
buffers_front replaces buffer_front
buffers_cat replaces buffer_cat
buffers_cat_view replaces buffer_cat_view
Remove buffers_suffix::get

Actions Required:

Use buffers_suffix instead of consuming_buffers
Use buffers_prefix instead of buffer_prefix
Use buffers_prefix_view instead of buffer_prefix_view
Use buffers_front instead of buffer_front
Use buffers_cat instead of buffer_cat
Use buffers_cat_view instead of buffer_cat_view
Avoid calling buffers_suffix::get

Version 116:

API Changes:

message::body is a member function
message::version is a member function

Actions Required:

Call member function message::body instead of accessing the data member at call sites.
Call member function message::version instead of accessing the version member at call sites.

Version 115:

Update README.md master doc link

Version 114:

(No changes)

Version 113:

Fix handler signature in async_read_header
Remove field_range copy constructor

Version 112:

Update websocket notes

API Changes:

WebSocket writes return the bytes transferred
HTTP reads and writes return bytes transferred

Actions Required:

Modify websocket write completion handlers to receive the extra std::size_t bytes_transferred parameter.
Modify HTTP read and/or write completion handlers to receive the extra std::size_t bytes_transferred parameter.

Version 111:

WebSocket:

Fix utf8 check split code point at buffer end
Refactor stream operations and tests plus coverage
Suspended ops special members

Version 110:

Refactor stream open state variable
Refactor websocket stream members
Refactor websocket stream: fixes and tests
Add test::stream::lowest_layer
Fix invalid iterator in test reporter

Version 109:

refactor test::stream

WebSocket:

Fix async_read_some handler signature
websocket close fixes and tests
websocket handshake uses coroutine
websocket ping tests
Fix websocket close_op resume state
websocket write tests
split up websocket tests
websocket read tests

API Changes:

websocket accept refactoring

Actions Required:

Do not call websocket accept overloads which take both a message and a buffer sequence, as it is illegal per rfc6455.

Version 108:

Fix argument parsing in HTTP examples
Don't use async_write_msg in examples

Version 107:

Use test::stream

WebSocket

Fix done state for WebSocket reads
Fix utf8 check for compressed frames
Rename frame and header buffer types

Version 106:

Dynamic buffer input areas are mutable
Add flat_static_buffer::reset

HTTP:

Fix for basic_parser::skip(true) and docs

WebSocket:

websocket test improvements
Remove obsolete write_op
Refactor write_op
Refactor ping_op
Refactor fail_op
Refactor read_op
Refactor close_op
Refactor read_op + fail_op
Websocket close will automatically drain
Autobahn|Testsuite fixes
Tidy up utf8_checker and tests

Version 105:

Fix compile error in websocket snippet
Tidy up Jamfile and tests

Version 104:

Remove unused include
Use #error in config.hpp
Only set -std=c++11 on Travis
Only set /permissive- on Appveyor
Tidy up some test warnings
tools/ renamed from build/

WebSocket:

Fix pausation::save

Version 103:

Boost test matrix fixes
Tidy up allocator usage
Example HTTP server fixes

Version 102:

Section headings in examples

Version 101:

Refactor all examples

Version 100:

Fix doc convenience includes
Fix doc includes
Remove unused test header
Rename test macros
Reorder define test macro params
vcxproj workaround for include symlinks
Add variadic min/max

WebSocket:

Remove obsolete frame tests
Refactor fail/clode code
Call do_fail from read_some
eof on accept returns error::closed
Fix stream::read_size_hint calculation
Documentation

API Changes:

Calls to stream::close and stream::async_close will automatically perform the required read operations
drain_buffer is removed
role_type replaces teardown_tag

Actions Required:

Remove calling code which drains the connection after calling stream::close or stream::async_close
Replace code which uses drain_buffer. For websocket::stream, it is no longer necessary to manually drain the connection after closing.
Modify signatures of teardown and async_teardown to use role_type instead of teardown_tag
Change calls to teardown and async_teardown to pass the correct role_type, client or server, depending on context.

Version 99:

Log the value of LIB_DIR for doc builds (debug)
Use correct handler signature in fail_op
Fix doc typo

Version 98:

basic_fields::key_compare is noexcept
Fix bench-zlib cmake
Use unique names Jam projects
Trim utf8 checker test

Version 97:

Update redirect

Version 96:

Move bench/ to test/
Move extras/ to test/
Use property
Rename wsload compile target
Fix library.json
Update boostorg links
Add bench-zlib
Faster zlib tests
Less compression on websocket test

Version 95:

Tidy up Travis build scripts
Move scripts to build/
Fix race in test::pipe
close on test::pipe teardown
Add test::stream
Tidy up static_buffer braced init
Fix html redirect
Add valgrind variant, fix false positives

Version 94:

Use off-site Quick Start link temporarily

Version 93:

Unset BOOST_COROUTINES_NO_DEPRECATION_WARNING

Version 92:

Fix typo in test/CMakeLists.txt
basic_fields::value_type is not copyable
Update repository links in source comments
Ignore Content-Length in some cases
Tidy up doc snippet paths
Use off-site doc link

Version 91:

Adjust redirect html
Don't build pre-C++11
source.dox is path-independent
Tidy up namespace qualifiers
Tidy up MSVC CMakeLists.txt
Optimize buffered_read_stream
constexpr in derived buffers
Set BOOST_ASIO_NO_DEPRECATED
Use Asio array optimization in static_buffer_base
Rename wstest source file
Use fopen_s on Windows
Fix Appveyor script
Update project metadata
Move benchmarks to bench/
Fix doc title
Build stand-alone doc
Update doc copyrights
Refactor test build scripts

WebSocket:

Tidy up websocket javadocs
Refactor accept, handshake ops
Use read buffer instead of buffered stream

API Changes

control frame callbacks are non-const references

Actions Required:

Modify calls to set the control frame callback, to pass non-const reference instances, and manage the lifetime of the instance.

Version 90:

Fix websocket read of zero length message
Fix typo in equal_range
Output to integrated documentation

Version 89:

Fix CONTRIBUTING.md links

Version 88:

Update doc links in README.md
Refactor tests Jamfile
Don't use program_options

WebSocket:

Fix uninitialized frame done

Version 87:

Update appveyor for Boost branch
Rename to BEAST_EXPECT
variant fixes and tests
Update README, add CONTRIBUTING.md and CODE_OF_CONDUCT.md

Version 86:

Boost prep
Remove use of lexical_cast
Use custom variant
Update README.md
Add local-travis.sh
Use winapi
Update CMakeLists.txt for boost
Update documentation for boost
Update copyrights
Remove spurious declaration
Tidy up Jamfile
Normalize doc build scripts
Use configured doxygen and xsltproc
Fix Deferred Body Type Example Documentation
Add library metadata

API Changes:

websocket read returns the number of bytes inserted

Actions Required:

Change the signature of completion handlers used with websocket::stream::async_read to void(error_code, std::size_t)

Version 85:

Fix test failure
Tidy up test warning

Version 84:

Tidy up buffer_front
static_buffer::consume improvement
multi_buffer is type-check friendly
bind_handler allows placeholders
Add consuming_buffers::get

WebSocket:

WebSocket read optimization

API Changes:

websocket::stream::read_buffer_size is removed

Actions Required:

Remove calls websocket::stream::read_buffer_size
Use read_some and write_some instead of read_frame and write_frame

Version 83:

Add flat_static_buffer::mutable_data
Add buffer_front
Add wstest compression option
Turn some flat_static_buffer_tests on
Documentation work
read_some, async_read_some return bytes used
Fix private timer::clock_type

WebSocket

Add wstest compression option
Fix buffer lifetime in websocket write

API Changes:

Add static_buffer

Actions Required:

Callers who depend on static_buffer returning sequences of exactly length one should switch to flat_static_buffer.

Version 82:

Documentation tidying
is_invocable works with move-only types
Use std::function and reference wrapper
Add session_alloc to example/common
Silence spurious warning

HTTP

Fix extraneous argument in async_write_header

WebSocket

stream tidying
Add rd_close_ to websocket stream state
stream uses flat_buffer
accept requires a message
Add wstest benchmark tool

API Changes:

Rename to flat_static_buffer and flat_static_buffer_base

Actions Required:

Rename static_buffer to flat_static_buffer_base
Rename static_buffer_n to flat_static_buffer

Version 81:

Pass string_view by value
better is_final on empty_base_optimization
Suppress incorrect GCC warning
multi_buffer ctor is explicit
File is not copy-constructible

API Changes:

Refactor basic_parser, chunk parsing:

Actions Required:

Adjust signatures for required members of user-defined subclasses of basic_parser
Use the new basic_parser chunk callbacks for accessing chunk extensions and chunk bodies.

Version 80:

Javadoc tidying
Add basic_dynamic_body.hpp
Shrink buffer_prefix_view
Remove unused file_path
Add basic_file_body.hpp
buffers_ref is Assignable

HTTP

Shrink chunk header buffer sequence size

API Changes:

Refactor chunked-encoding serialization

Actions Required:

Remove references to ChunkDecorators. Use the new chunk-encoding buffer sequences to manually produce a chunked payload body in the case where control over the chunk-extensions and/or trailers is required.

Version 79:

Remove spurious fallthrough guidance

Version 78:

Add span
Documentation work
Use make_unique_noinit
Fix warning in zlib
Header file tidying
Tidy up FieldsReader doc
Add Boost.Locale utf8 benchmark comparison
Tidy up dstream for existing Boost versions
Tidy up file_posix unused variable
Fix warning in root ca declaration

HTTP:

Tidy up basic_string_body
Add vector_body
span, string, vector bodies are public
Fix spurious uninitialized warning
fields temp string uses allocator

API Changes:

Add message::keep_alive()
Add message::chunked() and message::content_length()
Remove string_view_body

Actions Required:

Change user defined implementations of Fields and FieldsReader to meet the new requirements.
Use span_body instead of string_view_body

Version 77:

file_posix works without large file support

Version 76:

Always go through write_some
Use Boost.Config
BodyReader may construct from a non-const message
Add serializer::get
Add serializer::chunked
Serializer members are not const
serializing file_body is not const
Add file_body_win32
Fix parse illegal characters in obs-fold
Disable SSE4.2 optimizations

API Changes:

Rename to serializer::keep_alive
BodyReader, BodyWriter use two-phase init

Actions Required:

Use serializer::keep_alive instead of serializer::close and take the logical NOT of the return value.
Modify instances of user-defined BodyReader and BodyWriter types to perform two-phase initialization, as per the updated documented type requirements.

Version 75:

Use file_body for valid requests, string_body otherwise.
Construct buffer_prefix_view in-place
Shrink serializer buffers using buffers_ref
Tidy up BEAST_NO_BIG_VARIANTS
Shrink serializer buffers using buffers_ref
Add serializer::limit
file_body tests
Using SSE4.2 intrinsics in basic_parser if available

Version 74:

Add file_stdio and File concept
Add file_win32
Add file_body
Remove common/file_body.hpp
Add file_posix
Fix Beast include directories for cmake targets
remove redundant flush() from example

Version 73:

Jamroot tweak
Verify certificates in SSL clients
Adjust benchmarks
Initialize local variable in basic_parser
Fixes for gcc-4.8

HTTP:

basic_parser optimizations
Add basic_parser tests

API Changes:

Refactor header and message constructors
serializer::next replaces serializer::get

Actions Required:

Evaluate each message constructor call site and adjust the constructor argument list as needed.
Use serializer::next instead of serializer::get at call sites

Version 72:

HTTP:

Tidy up set payload in http-server-fast
Refine Body::size specification
Newly constructed responses have a 200 OK result
Refactor file_body for best practices
Add http-server-threaded example
Documentation tidying
Various improvements to http_server_fast.cpp

WebSocket:

Add websocket-server-async example

Version 71:

Fix extra ; warning
Documentation revision
Fix spurious on_chunk invocation
Call prepare_payload in HTTP example
Check trailers in test
Fix buffer overflow handling for string_body and mutable_body
Concept check in basic_dynamic_body
Tidy up http_sync_port error check
Tidy up Jamroot /permissive-

WebSockets:

Fine tune websocket op asserts
Refactor websocket composed ops
Allow close, ping, and write to happen concurrently
Fix race in websocket read op
Fix websocket write op
Add cmake options for examples and tests

API Changes:

Return std::size_t from Body::writer::put

Actions Required:

Return the number of bytes actually transferred from the input buffers in user defined Body::writer::put functions.

Version 70:

Serialize in one step when possible
Add basic_parser header and body limits
Add parser::on_header to set a callback
Fix BEAST_FALLTHROUGH
Fix HEAD response in file_service

API Changes:

Rename to message::base
basic_parser default limits are now 1MB/8MB

Actions Required:

Change calls to message::header_part() with message::base()
Call body_limit and/or header_limit as needed to adjust the limits to suitable values if the defaults are insufficient.

Version 69:

basic_parser optimizations
Use BEAST_FALLTHROUGH to silence warnings
Add /permissive- to msvc toolchain

Version 68:

Split common tests to a new project
Small speed up in fields comparisons
Adjust buffer size in fast server
Use string_ref in older Boost versions
Optimize field lookups
Add const_body, mutable_body to examples
Link statically on cmake MSVC

API Changes:

Change BodyReader, BodyWriter requirements
Remove BodyReader::is_deferred
http::error::bad_target replaces bad_path

Actions Required:

Change user defined instances of BodyReader and BodyWriter to meet the new requirements.
Replace references to http::error::bad_path with http::error::bad_target

Version 67:

Fix doc example link
Add http-server-small example
Merge stream_base to stream and tidy
Use boost::string_view
Rename to http-server-fast
Appveyor use Boost 1.64.0
Group common example headers

API Changes:

control_callback replaces ping_callback

Actions Required:

Change calls to websocket::stream::ping_callback to use websocket::stream::control_callback
Change user defined ping callbacks to have the new signature and adjust the callback definition appropriately.

Version 66:

string_param optimizations
Add serializer request/response aliases
Make consuming_buffers smaller
Fix costly potential value-init in parser
Fix unused parameter warning
Handle bad_alloc in parser
Tidy up message piecewise ctors
Add header aliases
basic_fields optimizations
Add http-server example
Squelch spurious warning on gcc

Version 65:

Enable narrowing warning on msvc cmake
Fix integer types in deflate_stream::bi_reverse
Fix narrowing in static_ostream
Fix narrowing in ostream
Fix narrowing in inflate_stream
Fix narrowing in deflate_stream
Fix integer warnings
Enable unused variable warning on msvc cmake

Version 64:

Simplify buffered_read_stream composed op
Simplify ssl teardown composed op
Simplify websocket write_op
Exemplars are compiled code
Better User-Agent in examples
async_write requires a non-const message
Doc tidying
Add link_directories to cmake

API Changes:

Remove make_serializer

Actions Required:

Replace calls to make_serializer with variable declarations

Version 63:

Use std::to_string instead of lexical_cast
Don't use cached Boost
Put num_jobs back up on Travis
Only build and run tests in variant=coverage
Move benchmarks to a separate project
Only run the tests under ubasan
Tidy up CMakeLists.txt
Tidy up Jamfiles
Control running with valgrind explicitly

Version 62:

Remove libssl-dev from a Travis matrix item
Increase detail::static_ostream coverage
Add server-framework tests
Doc fixes and tidy
Tidy up namespaces in examples
Clear the error faster
Avoid explicit operator bool for error
Add http::is_fields trait
Squelch harmless not_connected errors
Put slow tests back for coverage builds

API Changes:

parser requires basic_fields
Refine FieldsReader concept
message::prepare_payload replaces message::prepare

Actions Required:

Callers using parser with Fields types other than basic_fields will need to create their own subclass of basic_parser to work with their custom fields type.
Implement chunked() and keep_alive() for user defined FieldsReader types.
Change calls to msg.prepare to msg.prepare_payload. For messages with a user-defined Fields, provide the function prepare_payload_impl in the fields type according to the Fields requirements.

Version 61:

Remove Spirit dependency
Use generic_cateogry for errno
Reorganize SSL examples
Tidy up some integer conversion warnings
Add message::header_part()
Tidy up names in error categories
Flush the output stream in the example
Clean close in Secure WebSocket client
Add server-framework SSL HTTP and WebSocket ports
Fix shadowing warnings
Tidy up http-crawl example
Add multi_port to server-framework
Tidy up resolver calls
Use one job on CI
Don't run slow tests on certain targets

API Changes:

header::version is unsigned
status-codes is unsigned

Version 60:

String comparisons are public interfaces
Fix response message type in async websocket accept
New server-framework, full featured server example

Version 59:

Integrated Beast INTERFACE (cmake)
Fix base64 alphabet
Remove obsolete doc/README.md

API Changes:

Change Body::size signature (API Change):

Actions Required:

For any user-defined models of Body, change the function signature to accept value_type const& and modify the function definition accordingly.

Version 58:

Fix unaligned reads in utf8-checker
Qualify size_t in message template
Reorganize examples
Specification for http read
Avoid std::string in websocket
Fix basic_fields insert ordering
basic_fields::set optimization
basic_parser::put doc
Use static string in basic_fields::reader
Remove redundant code
Fix parsing chunk size with leading zeroes
Better message formal parameter names

API Changes:

basic_fields::set renamed from basic_fields::replace

Actions Required:

Rename calls to basic_fields::replace to basic_fields::set

Version 57:

Fix message.hpp javadocs
Fix warning in basic_parser.cpp
Integrate docca for documentation and tidy

Version 56:

Add provisional IANA header field names
Add string_view_body
Call on_chunk when the extension is empty
HTTP/1.1 is the default version
Try harder to find Boost (cmake)
Reset error codes
More basic_parser tests
Add an INTERFACE cmake target
Convert buffer in range loops

Version 55:

Don't allocate memory to handle obs-fold
Avoid a parser allocation using non-flat buffer
read_size replaces read_size_helper

Version 54:

static_buffer coverage
flat_buffer coverage
multi_buffer coverage
consuming_buffers members and coverage
basic_fields members and coverage
Add string_param
Retain ownership when reading using a message
Fix incorrect use of [[fallthrough]]

API Changes:

basic_fields refactor

Version 53:

Fix basic_parser::maybe_flatten
Fix read_size_helper usage

Version 52:

flat_buffer is an AllocatorAwareContainer
Add drain_buffer class

API Changes:

auto_fragment is a member of stream
binary, text are members of stream
read_buffer_size is a member of stream
read_message_max is a member of stream
write_buffer_size is a member of stream
ping_callback is a member of stream
Remove opcode from read, async_read
read_frame returns bool fin
opcode is private
finish(error_code&) is a BodyReader requirement

Actions Required:

Change call sites which use auto_fragment with set_option to call stream::auto_fragment instead.
Change call sites which use message_type with set_option to call stream::binary or stream::text instead.
Change call sites which use read_buffer_size with set_option to call stream::read_buffer_size instead.
Change call sites which use read_message_max with set_option to call stream::read_message_max instead.
Change call sites which use write_buffer_size with set_option to call stream::write_buffer_size instead.
Change call sites which use ping_callback1 with set_optionto callstream::ping_callback` instead.
Remove the opcode reference parameter from calls to synchronous and asynchronous read functions, replace the logic with calls to stream::got_binary and stream::got_text instead.
Remove the frame_info parameter from all read frame call sites
Check the return value 'fin' for calls to read_frame
Change ReadHandlers passed to async_read_frame to have the signature void(error_code, bool fin), use the bool to indicate if the frame is the last frame.
Remove all occurrences of the opcode enum at call sites

Version 51

Fix operator<< for header
Tidy up file_body
Fix file_body::get() not setting the more flag correctly
Use BOOST_FALLTHROUGH
Use BOOST_STRINGIZE
DynamicBuffer benchmarks
Add construct, destroy to handler_alloc
Fix infinite loop in basic_parser

API Changes:

Tune up static_buffer
multi_buffer implementation change

Actions Required:

Call sites passing a number to multi_buffer's constructor will need to be adjusted, see the corresponding commit message.

Version 50

parser is constructible from other body types
Add field enumeration
Use allocator more in basic_fields
Fix basic_fields allocator awareness
Use field in basic_fields and call sites
Use field in basic_parser
Tidy up basic_fields, header, and field concepts
Fields concept work
Body documentation work
Add missing handler_alloc nested types
Fix chunk delimiter parsing
Fix test::pipe read_size
Fix chunk header parsing

API Changes:

Remove header_parser
Add verb to on_request for parsers
Refactor prepare
Protect basic_fields special members
Remove message connection settings
Remove message free functions
Remove obsolete serializer allocator
http read_some, async_read_some don't return bytes

Version 49

Use instead of

HTTP:

Add HEAD request example

API Changes:

Refactor method and verb
Canonicalize string_view parameter types
Tidy up empty_body writer error
Refactor header status, reason, and target

Version 48

Make buffer_prefix_view public
Remove detail::sync_ostream
Tidy up core type traits

API Changes:

Tidy up chunk decorator
Rename to buffer_cat_view
Consolidate parsers to parser.hpp
Rename to parser

Version 47

Disable operator<< for buffer_body
buffer_size overload for basic_multi_buffer::const_buffers_type
Fix undefined behavior in pausation
Fix leak in basic_flat_buffer

API Changes:

Refactor treatment of request-method
Refactor treatment of status code and obsolete reason
Refactor HTTP serialization and parsing

Version 46

Add test::pipe
Documentation work

API Changes:

Remove HTTP header aliases
Refactor HTTP serialization
Refactor type traits

Version 45

Workaround for boost::asio::basic_streambuf type check
Fix message doc image
Better test::enable_yield_to
Fix header::reason
Documentation work
buffer_view skips empty buffer sequences
Disable reverse_iterator buffer_view test

Version 44

Use BOOST_THROW_EXCEPTION
Tidy up read_size_helper and dynamic buffers
Require Boost 1.58.0 or later
Tidy up and make get_lowest_layer public
Use BOOST_STATIC_ASSERT
Fix async return values in docs
Fix README websocket example
Add buffers_adapter regression test
Tidy up is_dynamic_buffer traits test
Make buffers_adapter meet requirements

Version 43

Require Boost 1.64.0
Fix strict aliasing warnings in buffers_view
Tidy up buffer_prefix overloads and test
Add write limit to test::string_ostream
Additional constructors for consuming_buffers

Version 42

Fix javadoc typo
Add formal review notes
Make buffers_view a public interface

Version 41

Trim Appveyor matrix rows
Concept revision and documentation
Remove coveralls integration
Tidy up formal parameter names

WebSocket

Tidy up websocket::close_code enum and constructors

API Changes

Return http::error::end_of_stream on HTTP read eof
Remove placeholders
Rename prepare_buffer(s) to buffer_prefix
Remove handler helpers, tidy up hook invocations

Version 40

Add to_static_string
Consolidate get_lowest_layer in type_traits.hpp
Fix basic_streambuf movable trait
Tidy up .travis.yml

Version 39

Beast versions are now identified by a single integer which is incremented on each merge. The macro BEAST_VERSION identifies the version number, currently at 39. A version setting commit will always be at the tip of the master and develop branches.

Use beast::string_view alias
Fixed braced-init error with older gcc

HTTP

Tidy up basic_parser javadocs

WebSocket:

Add websocket async echo ssl server test:
Fix eof error on ssl::stream shutdown

API Changes:

Refactor http::header contents
New ostream() returns dynamic buffer output stream
New buffers() replaces to_string()
Rename to multi_buffer, basic_multi_buffer
Rename to flat_buffer, basic_flat_buffer
Rename to static_buffer, static_buffer_n
Rename to buffered_read_stream
Harmonize concepts and identifiers with net-ts
Tidy up HTTP reason_string

1.0.0-b38

Refactor static_string
Refactor base64
Use static_string for WebSocket handshakes
Simplify get_lowest_layer test
Add test_allocator to extras/test
More flat_streambuf tests
WebSocket doc work
Prevent basic_fields operator[] assignment

API Changes:

Refactor WebSocket error codes
Remove websocket::keep_alive option

1.0.0-b37

CMake hide command lines in .vcxproj Output windows"
Rename to detail::is_invocable
Rename project to http-bench
Fix flat_streambuf
Add ub sanitizer blacklist
Add -funsigned-char to asan build target
Fix narrowing warning in table constants

WebSocket:

Add is_upgrade() free function
Document websocket::stream thread safety
Rename to websocket::detail::pausation

API Changes:

Provide websocket::stream accept() overloads
Refactor websocket decorators
Move everything in basic_fields.hpp to fields.hpp
Rename to http::dynamic_body, consolidate header

1.0.0-b36

Update README.md

1.0.0-b35

Add Appveyor build scripts and badge
Tidy up MSVC CMake configuration
Make close_code a proper enum
Add flat_streambuf
Rename to BEAST_DOXYGEN
Update .gitignore for VS2017
Fix README.md CMake instructions

API Changes:

New HTTP interfaces
Remove http::empty_body

1.0.0-b34

Fix and tidy up CMake build scripts

1.0.0-b33

Require Visual Studio 2015 Update 3 or later

HTTP

Use fwrite return value in file_body

WebSocket

Set internal state correctly when writing frames
Add decorator unit test
Add write_frames unit test

1.0.0-b32

Add io_service completion invariants test
Update CMake scripts for finding packages

API Changes:

Remove http Writer suspend and resume feature

1.0.0-b31

Tidy up build settings
Add missing dynabuf_readstream member

WebSocket

Move the handler, don't copy it

1.0.0-b30

WebSocket

Fix race in pings during reads
Fix race in close frames during reads
Fix race when write suspends
Allow concurrent websocket async ping and writes

1.0.0-b29

Fix compilation error in non-template class
Document type-pun in buffer_cat
Correctly check ostream modifier (/extras)

HTTP

Fix Body requirements doc
Fix illegal HTTP characters accepted as hex zero
Fix Writer return value documentation

WebSocket

Fix race in writes during reads
Fix doc link typo

1.0.0-b28

Split out and rename test stream classes
Restyle async result constructions
Fix HTTP split parse edge case

1.0.0-b27

Tidy up tests and docs
Add documentation building instructions

API Changes:

Invoke callback on pings and pongs
Move basic_streambuf to streambuf.hpp

1.0.0-b26

Tidy up warnings and tests

1.0.0-b25

Fixes for WebSocket echo server
Fix 32-bit arm7 warnings
Remove unnecessary include
WebSocket server examples and test tidying
Fix deflate setup bug

API Changes:

Better handler_ptr

1.0.0-b24

bjam use clang on MACOSX
Simplify Travis package install specification
Add optional yield_to arguments
Make decorator copyable
Add WebSocket permessage-deflate extension support

1.0.0-b23

Tune websocket echo server for performance
Add file and line number to thrown exceptions
Better logging in async echo server
Add copy special members
Fix message constructor and special members
Travis CI improvements

1.0.0-b22

Fix broken Intellisense
Implement the Asio deallocation-before-invocation guarantee
Add handler helpers
Avoid copies in handler_alloc
Update README.md example programs
Fix websocket stream read documentation
Disable Boost.Coroutine deprecation warning
Update documentation examples

1.0.0-b21

Remove extraneous includes

1.0.0-b20

ZLib

Add ZLib module

API Changes:

Rename HTTP identifiers

1.0.0-b19

Boost library min/max guidance
Improvements to code coverage
Use boost::lexical_cast instead of std::to_string
Fix prepare_buffers value_type
Fix consuming_buffers value_type
Better buffer_cat

HTTP

Make chunk_encode public
Add write, async_write, operator<< for message_headers
Add read, async_read for message_headers
Fix with_body example

WebSocket

Optimize utf8 validation
Optimize mask operations

API Changes:

Refactor message and message_headers declarations
prepared_buffers is private
consume_buffers is removed

1.0.0-b18

Increase optimization settings for MSVC builds

HTTP

Check invariants in parse_op:
Clean up message docs

WebSocket

Write buffer option does not change capacity
Close connection during async_read on close frame
Add pong, async pong to stream

Core

Meet DynamicBuffer requirements for static_streambuf
Fix write_frame masking and auto-fragment handling

Extras

unit_test::suite fixes:
- New overload of fail() specifies file and line
- BEAST_EXPECTS only evaluates the reason string on a failure
Add zlib module

1.0.0-b17

Change implicit to default value in example
Tidy up some declarations
Fix basic_streambuf::capacity
Add basic_streambuf::alloc_size
Parser callbacks may not throw
Fix Reader concept doc typo
Add is_Reader trait
Tidy up basic_headers for documentation
Tidy up documentation
Add basic_parser_v1::reset
Fix handling of body_what::pause in basic_parser_v1
Add headers_parser
Engaged invokable is destructible
Improve websocket example in README.md
Refactor read_size_helper

API Changes:

Added init() to Reader requirements
Reader must be nothrow constructible
Reader is now constructed right before reading the body
- The message passed on construction is filled in
Rework HTTP concepts:
- Writer uses write instead of operator()
- Refactor traits to use void_t
- Remove is_ReadableBody, is_WritableBody
- Add has_reader, has_writer, is_Reader, is_Writer
- More friendly compile errors on failed concept checks
basic_parser_v1 requires all callbacks present
on_headers parser callback now returns void
on_body_what is a new required parser callback returning body_what

1.0.0-b16

Make value optional in param-list
Frame processing routines are member functions
Fix on_headers called twice from basic_parser_v1
Constrain parser_v1 constructor
Improve first line serialization
Add pause option to on_headers interface
Refactor base_parser_v1 callback traits:
Refine Parser concept
Relax ForwardIterator requirements in FieldSequence
Fix websocket failure testing
Refine Writer concept and fix exemplar in documentation

API Changes:

Rename mask_buffer_size to write_buffer_size
Make auto_fragment a boolean option

The message class hierarchy is refactored (breaking change):

One message class now models both HTTP/1 and HTTP/2 messages
message_v1, request_v1, response_v1 removed
New classes basic_request and basic_response model messages without the body.

Error resolution: Callers should use message, request, and response instead of message_v1, request_v1, and response_v1 respectively.

1.0.0-b15

rfc7230 section 3.3.2 compliance
Add HTTPS example
Add Secure WebSocket example
Fix message_v1 constructor
Tidy up DynamicBuffer requirements
Tidy up error types and headers
Fix handling empty HTTP headers in parser_v1

1.0.0-b14

Add missing rebind to handler_alloc
Fix error handling in http server examples
Fix CMake scripts for MinGW
Use BOOST_ASSERT
Better WebSocket decorator
Update and tidy documentation

1.0.0-b13

dstream improvements
Remove bin and bin64 directories
Tidy up .vcxproj file groupings

1.0.0-b12

Use -p to print suites from unit test main.
BEAST_EXPECTS to add a reason string to test failures
Fix unit test runner to output all case names
Update README for build requirements
Rename to CHANGELOG.md

1.0.0-b11

Set URI in generated WebSocket Upgrade requests
Rename echo server class and file names
Rename to DynamicBuffer in some code and documentation
Fix integer warnings in Windows builds
Add 32 and 64 bit Windows build support
Update README for build instructions and more
Add repository and documentation banners

1.0.0-b10

Fix compilation warnings
Add websocketpp comparison to HTML documentation

1.0.0-b9

Fix CMakeLists.txt

1.0.0-b8

Fix include in example code
Fix basic_headers rfc2616 Section 4.2 compliance

1.0.0-b7

Fix prepare by calling init. prepare() can throw depending on the implementation of Writer. Publicly provided beast::http writers never throw.
Fixes to example HTTP server
Fully qualify ambiguous calls to read and parse
Remove deprecated http::stream wrapper
Example HTTP server now calculates the MIME-type
Fixes and documentation for teardown and use with SSL:
Add example code to rfc7230 javadocs
Remove extraneous header file <beast/http/status.hpp>
Add skip_body parser option

1.0.0-b6

Use SFINAE on return values
Use beast::error_code instead of nested types
Tidy up use of GENERATING_DOCS
Remove obsolete RFC2616 functions
Add message swap members and free functions
Add HTTP field value parser containers: ext_list, param_list, token_list
Fixes for some corner cases in basic_parser_v1
Configurable limits on headers and body sizes in basic_parser_v1

API Changes:

ci_equal is moved to beast::http namespace, in rfc7230.hpp
"DynamicBuffer","dynabuf" renamed from "Streambuf", "streambuf". See: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4478.html#requirements.dynamic_buffers
basic_parser_v1 adheres to rfc7230 as strictly as possible

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