forked from boostorg/beast
3a28e999af
fix #769 The following classes are removed: * handler_type * async_result * async_completion * is_dynamic_buffer * is_const_buffer_sequence * is_mutable_buffer_sequence * handler_alloc 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
407 lines
11 KiB
C++
407 lines
11 KiB
C++
//
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// Copyright (c) 2016-2017 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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// Official repository: https://github.com/boostorg/beast
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//
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#ifndef BOOST_BEAST_WEBSOCKET_IMPL_HANDSHAKE_IPP
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#define BOOST_BEAST_WEBSOCKET_IMPL_HANDSHAKE_IPP
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#include <boost/beast/websocket/detail/type_traits.hpp>
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#include <boost/beast/http/empty_body.hpp>
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#include <boost/beast/http/message.hpp>
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#include <boost/beast/http/read.hpp>
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#include <boost/beast/http/write.hpp>
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#include <boost/beast/core/handler_ptr.hpp>
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#include <boost/beast/core/type_traits.hpp>
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#include <boost/asio/associated_allocator.hpp>
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#include <boost/asio/associated_executor.hpp>
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#include <boost/asio/coroutine.hpp>
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#include <boost/asio/handler_continuation_hook.hpp>
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#include <boost/assert.hpp>
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#include <boost/throw_exception.hpp>
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#include <memory>
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namespace boost {
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namespace beast {
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namespace websocket {
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//------------------------------------------------------------------------------
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// send the upgrade request and process the response
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//
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template<class NextLayer>
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template<class Handler>
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class stream<NextLayer>::handshake_op
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: public boost::asio::coroutine
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{
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struct data
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{
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stream<NextLayer>& ws;
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response_type* res_p;
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detail::sec_ws_key_type key;
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http::request<http::empty_body> req;
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response_type res;
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template<class Decorator>
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data(Handler&, stream<NextLayer>& ws_,
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response_type* res_p_,
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string_view host,
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string_view target,
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Decorator const& decorator)
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: ws(ws_)
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, res_p(res_p_)
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, req(ws.build_request(key,
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host, target, decorator))
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{
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ws.reset();
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}
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};
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handler_ptr<data, Handler> d_;
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public:
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handshake_op(handshake_op&&) = default;
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handshake_op(handshake_op const&) = default;
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template<class DeducedHandler, class... Args>
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handshake_op(DeducedHandler&& h,
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stream<NextLayer>& ws, Args&&... args)
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: d_(std::forward<DeducedHandler>(h),
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ws, std::forward<Args>(args)...)
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{
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}
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using allocator_type =
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boost::asio::associated_allocator_t<Handler>;
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allocator_type
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get_allocator() const noexcept
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{
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return boost::asio::get_associated_allocator(d_.handler());
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}
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using executor_type = boost::asio::associated_executor_t<
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Handler, decltype(d_->ws.get_executor())>;
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executor_type get_executor() const noexcept
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{
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return boost::asio::get_associated_executor(
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d_.handler(), d_->ws.get_executor());
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}
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void
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operator()(
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error_code ec = {},
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std::size_t bytes_used = 0);
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friend
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bool asio_handler_is_continuation(handshake_op* op)
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{
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using boost::asio::asio_handler_is_continuation;
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return asio_handler_is_continuation(
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std::addressof(op->d_.handler()));
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}
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};
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template<class NextLayer>
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template<class Handler>
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void
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stream<NextLayer>::handshake_op<Handler>::
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operator()(error_code ec, std::size_t)
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{
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auto& d = *d_;
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BOOST_ASIO_CORO_REENTER(*this)
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{
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// Send HTTP Upgrade
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pmd_read(d.ws.pmd_config_, d.req);
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BOOST_ASIO_CORO_YIELD
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http::async_write(d.ws.stream_,
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d.req, std::move(*this));
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if(ec)
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goto upcall;
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// VFALCO We could pre-serialize the request to
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// a single buffer, send that instead,
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// and delete the buffer here. The buffer
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// could be a variable block at the end
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// of handler_ptr's allocation.
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// Read HTTP response
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BOOST_ASIO_CORO_YIELD
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http::async_read(d.ws.next_layer(),
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d.ws.rd_buf_, d.res,
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std::move(*this));
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if(ec)
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goto upcall;
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d.ws.on_response(d.res, d.key, ec);
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if(d.res_p)
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swap(d.res, *d.res_p);
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upcall:
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d_.invoke(ec);
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}
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}
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template<class NextLayer>
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template<class HandshakeHandler>
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BOOST_ASIO_INITFN_RESULT_TYPE(
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HandshakeHandler, void(error_code))
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stream<NextLayer>::
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async_handshake(string_view host,
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string_view target,
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HandshakeHandler&& handler)
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{
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static_assert(is_async_stream<next_layer_type>::value,
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"AsyncStream requirements not met");
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boost::asio::async_completion<HandshakeHandler,
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void(error_code)> init{handler};
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handshake_op<BOOST_ASIO_HANDLER_TYPE(
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HandshakeHandler, void(error_code))>{
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init.completion_handler, *this, nullptr, host,
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target, &default_decorate_req}();
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return init.result.get();
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}
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template<class NextLayer>
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template<class HandshakeHandler>
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BOOST_ASIO_INITFN_RESULT_TYPE(
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HandshakeHandler, void(error_code))
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stream<NextLayer>::
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async_handshake(response_type& res,
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string_view host,
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string_view target,
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HandshakeHandler&& handler)
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{
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static_assert(is_async_stream<next_layer_type>::value,
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"AsyncStream requirements not met");
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boost::asio::async_completion<HandshakeHandler,
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void(error_code)> init{handler};
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handshake_op<BOOST_ASIO_HANDLER_TYPE(
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HandshakeHandler, void(error_code))>{
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init.completion_handler, *this, &res, host,
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target, &default_decorate_req}();
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return init.result.get();
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}
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template<class NextLayer>
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template<class RequestDecorator, class HandshakeHandler>
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BOOST_ASIO_INITFN_RESULT_TYPE(
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HandshakeHandler, void(error_code))
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stream<NextLayer>::
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async_handshake_ex(string_view host,
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string_view target,
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RequestDecorator const& decorator,
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HandshakeHandler&& handler)
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{
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static_assert(is_async_stream<next_layer_type>::value,
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"AsyncStream requirements not met");
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static_assert(detail::is_RequestDecorator<
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RequestDecorator>::value,
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"RequestDecorator requirements not met");
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boost::asio::async_completion<HandshakeHandler,
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void(error_code)> init{handler};
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handshake_op<BOOST_ASIO_HANDLER_TYPE(
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HandshakeHandler, void(error_code))>{
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init.completion_handler, *this, nullptr, host,
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target, decorator}();
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return init.result.get();
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}
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template<class NextLayer>
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template<class RequestDecorator, class HandshakeHandler>
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BOOST_ASIO_INITFN_RESULT_TYPE(
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HandshakeHandler, void(error_code))
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stream<NextLayer>::
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async_handshake_ex(response_type& res,
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string_view host,
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string_view target,
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RequestDecorator const& decorator,
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HandshakeHandler&& handler)
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{
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static_assert(is_async_stream<next_layer_type>::value,
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"AsyncStream requirements not met");
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static_assert(detail::is_RequestDecorator<
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RequestDecorator>::value,
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"RequestDecorator requirements not met");
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boost::asio::async_completion<HandshakeHandler,
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void(error_code)> init{handler};
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handshake_op<BOOST_ASIO_HANDLER_TYPE(
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HandshakeHandler, void(error_code))>{
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init.completion_handler, *this, &res, host,
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target, decorator}();
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return init.result.get();
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}
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template<class NextLayer>
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void
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stream<NextLayer>::
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handshake(string_view host,
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string_view target)
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{
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static_assert(is_sync_stream<next_layer_type>::value,
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"SyncStream requirements not met");
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error_code ec;
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handshake(
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host, target, ec);
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if(ec)
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BOOST_THROW_EXCEPTION(system_error{ec});
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}
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template<class NextLayer>
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void
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stream<NextLayer>::
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handshake(response_type& res,
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string_view host,
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string_view target)
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{
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static_assert(is_sync_stream<next_layer_type>::value,
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"SyncStream requirements not met");
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error_code ec;
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handshake(res, host, target, ec);
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if(ec)
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BOOST_THROW_EXCEPTION(system_error{ec});
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}
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template<class NextLayer>
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template<class RequestDecorator>
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void
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stream<NextLayer>::
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handshake_ex(string_view host,
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string_view target,
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RequestDecorator const& decorator)
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{
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static_assert(is_sync_stream<next_layer_type>::value,
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"SyncStream requirements not met");
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static_assert(detail::is_RequestDecorator<
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RequestDecorator>::value,
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"RequestDecorator requirements not met");
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error_code ec;
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handshake_ex(host, target, decorator, ec);
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if(ec)
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BOOST_THROW_EXCEPTION(system_error{ec});
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}
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template<class NextLayer>
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template<class RequestDecorator>
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void
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stream<NextLayer>::
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handshake_ex(response_type& res,
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string_view host,
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string_view target,
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RequestDecorator const& decorator)
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{
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static_assert(is_sync_stream<next_layer_type>::value,
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"SyncStream requirements not met");
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static_assert(detail::is_RequestDecorator<
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RequestDecorator>::value,
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"RequestDecorator requirements not met");
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error_code ec;
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handshake_ex(res, host, target, decorator, ec);
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if(ec)
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BOOST_THROW_EXCEPTION(system_error{ec});
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}
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template<class NextLayer>
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void
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stream<NextLayer>::
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handshake(string_view host,
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string_view target, error_code& ec)
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{
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static_assert(is_sync_stream<next_layer_type>::value,
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"SyncStream requirements not met");
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do_handshake(nullptr,
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host, target, &default_decorate_req, ec);
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}
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template<class NextLayer>
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void
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stream<NextLayer>::
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handshake(response_type& res,
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string_view host,
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string_view target,
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error_code& ec)
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{
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static_assert(is_sync_stream<next_layer_type>::value,
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"SyncStream requirements not met");
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do_handshake(&res,
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host, target, &default_decorate_req, ec);
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}
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template<class NextLayer>
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template<class RequestDecorator>
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void
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stream<NextLayer>::
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handshake_ex(string_view host,
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string_view target,
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RequestDecorator const& decorator,
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error_code& ec)
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{
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static_assert(is_sync_stream<next_layer_type>::value,
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"SyncStream requirements not met");
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static_assert(detail::is_RequestDecorator<
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RequestDecorator>::value,
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"RequestDecorator requirements not met");
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do_handshake(nullptr,
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host, target, decorator, ec);
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}
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template<class NextLayer>
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template<class RequestDecorator>
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void
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stream<NextLayer>::
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handshake_ex(response_type& res,
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string_view host,
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string_view target,
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RequestDecorator const& decorator,
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error_code& ec)
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{
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static_assert(is_sync_stream<next_layer_type>::value,
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"SyncStream requirements not met");
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static_assert(detail::is_RequestDecorator<
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RequestDecorator>::value,
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"RequestDecorator requirements not met");
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do_handshake(&res,
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host, target, decorator, ec);
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}
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//------------------------------------------------------------------------------
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template<class NextLayer>
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template<class RequestDecorator>
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void
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stream<NextLayer>::
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do_handshake(
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response_type* res_p,
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string_view host,
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string_view target,
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RequestDecorator const& decorator,
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error_code& ec)
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{
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response_type res;
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reset();
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detail::sec_ws_key_type key;
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{
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auto const req = build_request(
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key, host, target, decorator);
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pmd_read(pmd_config_, req);
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http::write(stream_, req, ec);
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}
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if(ec)
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return;
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http::read(next_layer(), rd_buf_, res, ec);
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if(ec)
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return;
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on_response(res, key, ec);
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if(res_p)
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*res_p = std::move(res);
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}
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} // websocket
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} // beast
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} // boost
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#endif
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