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9f10b11 Set version to 1.0.0-b28 195f974 Fix HTTP split parse edge case: 264fd41 Restyle async result constructions 572a0eb Split out and rename test stream classes 95b6646 Tidy up some WebSocket javadocs f6938d3 Set version to 1.0.0-b27 a6120cd Update copyright dates c7bfe7d Add documentation building instructions f6c91ce Tidy up tests and docs: f03985f Move basic_streambuf to streambuf.hpp (API Change): b8639a7 Invoke callback on pings and pongs (API Change): git-subtree-dir: src/beast git-subtree-split: 9f10b11eff58aeb793b673c8a8cb6e2bee3db621
71 lines
2.1 KiB
C++
71 lines
2.1 KiB
C++
//
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// Copyright (c) 2013-2017 Vinnie Falco (vinnie dot falco at gmail dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef BEAST_BIND_HANDLER_HPP
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#define BEAST_BIND_HANDLER_HPP
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#include <beast/core/handler_concepts.hpp>
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#include <beast/core/detail/bind_handler.hpp>
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#include <type_traits>
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#include <utility>
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namespace beast {
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/** Bind parameters to a completion handler, creating a new handler.
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This function creates a new handler which, when invoked with no
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parameters, calls the original handler with the list of bound
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arguments. The passed handler and arguments are forwarded into
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the returned handler, which provides the same `io_service`
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execution guarantees as the original handler.
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Unlike `io_service::wrap`, the returned handler can be used in
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a subsequent call to `io_service::post` instead of
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`io_service::dispatch`, to ensure that the handler will not be
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invoked immediately by the calling function.
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Example:
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@code
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template<class AsyncReadStream, class ReadHandler>
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void
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do_cancel(AsyncReadStream& stream, ReadHandler&& handler)
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{
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stream.get_io_service().post(
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bind_handler(std::forward<ReadHandler>(handler),
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boost::asio::error::operation_aborted, 0));
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}
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@endcode
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@param handler The handler to wrap.
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@param args A list of arguments to bind to the handler. The
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arguments are forwarded into the returned object.
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*/
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template<class Handler, class... Args>
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#if GENERATING_DOCS
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implementation_defined
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#else
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detail::bound_handler<
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typename std::decay<Handler>::type, Args...>
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#endif
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bind_handler(Handler&& handler, Args&&... args)
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{
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static_assert(is_CompletionHandler<
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Handler, void(Args...)>::value,
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"Handler requirements not met");
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return detail::bound_handler<typename std::decay<
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Handler>::type, Args...>(std::forward<
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Handler>(handler), std::forward<Args>(args)...);
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}
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} // beast
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#endif
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