This change adds a new set of type requirements for dynamic buffers,
DynamicBuffer_v2, which supports copy construction. These new type
requirements enable dynamic buffers to be used as arguments to
user-defined composed operations, where the same dynamic buffer object
is used repeatedly for multiple underlying operations. For example:
template <typename DynamicBuffer>
void echo_line(tcp::socket& sock, DynamicBuffer buf)
{
n = boost::asio::read_until(sock, buf, '\n');
boost::asio::write(sock, buf, boost::asio::transfer_exactly(n));
}
The original DynamicBuffer type requirements have been renamed to
DynamicBuffer_v1.
New type traits is_dynamic_buffer_v1 and is_dynamic_buffer_v2 have been
added to test for conformance to DynamicBuffer_v1 and DynamicBuffer_v2
respectively. The existing is_dynamic_buffer trait has been retained and
delegates to is_dynamic_buffer_v1, unless BOOST_ASIO_NO_DYNAMIC_BUFFER_V1
is defined, in which case it delegates to is_dynamic_buffer_v2.
The dynamic_string_buffer and dynamic_vector buffer classes conform to
both DynamicBuffer_v1 and DynamicBuffer_v2 requirements.
When BOOST_ASIO_NO_DYNAMIC_BUFFER_V1 is defined, all support for
DynamicBuffer_v1 types and functions is #ifdef-ed out. Support for using
basic_streambuf with the read, async_read, read_until, async_read_until,
write, and async_write functions is also disabled as a consequence.
This change should have no impact on existing source code that simply
uses dynamic buffers in conjunction with asio's composed operations,
such as:
string data;
// ...
size_t n = boost::asio::read_until(my_socket
boost::asio::dynamic_buffer(data, MY_MAX),
'\n');
Add new overloads of the SSL stream's handshake() and async_handshake()
functions, that accepts a ConstBufferSequence to be used as initial
input to the ssl engine for the handshake procedure.
Thanks go to Nick Jones <nick dot fa dot jones at gmail dot com>, on
whose work this commit is partially based.
[SVN r84319]
* On Windows, ensure the count of outstanding work is decremented for
abandoned operations (i.e. operations that are being cleaned up within
the io_service destructor).
* Fix basic_socket_streambuf compile error when using MSVC 10's std::array.
* Preserve the value of errno across the signal handler.
* Fix unused return value warning.
* Fix various minor documentation errors.
[SVN r70751]
* Added support for C++0x move construction and assignment to sockets, serial
ports, POSIX descriptors and Windows handles.
* Regenerate documentation.
[SVN r70092]
