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Revision history.

[SVN r84880]
This commit is contained in:
Christopher Kohlhoff
2013-06-22 13:02:21 +00:00
parent 617ecf2598
commit 0923bc6904

View File

@@ -7,6 +7,94 @@
[section:history Revision History]
[heading Asio 1.10.0 / Boost 1.54]
* Added new traits classes, `handler_type` and `async_result`, that allow the
customisation of the return type of an initiating function.
* Added the `asio::spawn()` function, a high-level wrapper for running
stackful coroutines, based on the Boost.Coroutine library. The `spawn()`
function enables programs to implement asynchronous logic in a synchronous
manner. For example: `size_t n = my_socket.async_read_some(my_buffer, yield);`.
For further information, see [link boost_asio.overview.core.spawn Stackful
Coroutines].
* Added the `asio::use_future` special value, which provides first-class
support for returning a C++11 `std::future` from an asynchronous
operation's initiating function. For example:
`future<size_t> = my_socket.async_read_some(my_buffer, asio::use_future);`.
For further information, see [link boost_asio.overview.cpp2011.futures C++
2011 Support - Futures].
* Promoted the stackless coroutine class and macros to be part of Asio's
documented interface, rather than part of the HTTP server 4 example.
For further information, see [link boost_asio.overview.core.coroutine
Stackless Coroutines].
* Added a new handler hook called `asio_handler_is_continuation`.
Asynchronous operations may represent a continuation of the asynchronous
control flow associated with the current executing handler. The
`asio_handler_is_continuation` hook can be customised to return `true` if
this is the case, and Asio's implementation can use this knowledge to
optimise scheduling of the new handler. To cover common cases, Asio
customises the hook for strands, `spawn()` and composed asynchronous
operations.
* Added four new generic protocol classes, `generic::datagram_protocol`,
`generic::raw_protocol`, `generic::seq_packet_protocol` and
`generic::stream_protocol`, which implement the `Protocol` type
requirements, but allow the user to specify the address family (e.g.
`AF_INET`) and protocol type (e.g. `IPPROTO_TCP`) at runtime.
For further information, see [link
boost_asio.overview.networking.other_protocols Support for Other Protocols].
* Added C++11 move constructors that allow the conversion of a socket (or
acceptor) into a more generic type. For example, an `ip::tcp::socket` can
be converted into a `generic::stream_protocol::socket` via move
construction.
For further information, see [link
boost_asio.overview.networking.other_protocols Support for Other Protocols].
* Extended the `basic_socket_acceptor<>`'s `accept()` and `async_accept()`
functions to allow a new connection to be accepted directly into a socket
of a more generic type. For example, an `ip::tcp::acceptor` can be used to
accept into a `generic::stream_protocol::socket` object.
For further information, see [link
boost_asio.overview.networking.other_protocols Support for Other Protocols].
* Moved existing examples into a C++03-specific directory, and added a new
directory for C++11-specific examples. A limited subset of the C++03
examples have been converted to their C++11 equivalents.
* Various SSL enhancements. Thanks go to Nick Jones, on whose work these changes
are based.
* Added support for SSL handshakes with re-use of data already read from
the wire. New overloads of the `ssl::stream<>` class's `handshake()` and
`async_handshake()` functions have been added. These accept a
`ConstBufferSequence` to be used as initial input to the ssl engine for
the handshake procedure.
* Added support for creation of TLSv1.1 and TLSv1.2 `ssl::context` objects.
* Added a `set_verify_depth()` function to the `ssl::context` and
`ssl::stream<>` classes.
* Added the ability to load SSL certificate and key data from memory
buffers. New functions, `add_certificate_authority()`,
`use_certificate()`, `use_certificate_chain()`, `use_private_key()`,
`use_rsa_private_key()` and `use_tmp_dh()`, have been added to the
`ssl::context` class.
* Changed `ssl::context` to automatically disable SSL compression by
default. To enable, use the new `ssl::context::clear_options()` function,
as in `my_context.clear_options(ssl::context::no_compression)`.
* Fixed a potential deadlock in `signal_set` implementation.
* Fixed an error in acceptor example in documentation [ticket 8421].
* Fixed copy-paste errors in waitable timer documentation [ticket 8602].
* Added assertions to satisfy some code analysis tools [ticket 7739].
* Fixed a malformed `#warning` directive [ticket 7939].
* Fixed a potential data race in the Linux `epoll` implementation.
* Fixed a Windows-specific bug, where certain operations might generate an
`error_code` with an invalid (i.e. `NULL`) `error_category` [ticket 8613].
* Fixed `basic_waitable_timer`'s underlying implementation so that it can
handle any `time_point` value without overflowing the intermediate duration
objects.
* Fixed a problem with lost thread wakeups that can occur when making
concurrent calls to `run()` and `poll()` on the same `io_service` object
[ticket 8354].
* Fixed implementation of asynchronous connect operation so that it can cope
with spurious readiness notifications from the reactor [ticket 7961].
* Fixed a memory leak in the `ssl::rfc2818_verification` class.
* Added a mechanism for disabling automatic Winsock initialisation [ticket
3605]. See the header file [^boost/asio/detail/winsock_init.hpp] for details.
[heading Asio 1.8.3 / Boost 1.53]
* Fixed some 64-to-32-bit conversion warnings ([ticket 7459]).