Reorganize source files and definitions

include/beast/websocket/impl/close.ipp

@@ -0,0 +1,244 @@
+//
+// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef BEAST_WEBSOCKET_IMPL_CLOSE_IPP
+#define BEAST_WEBSOCKET_IMPL_CLOSE_IPP
+
+#include <beast/core/handler_alloc.hpp>
+#include <beast/core/static_streambuf.hpp>
+#include <beast/core/stream_concepts.hpp>
+#include <memory>
+
+namespace beast {
+namespace websocket {
+
+//------------------------------------------------------------------------------
+
+// send the close message and wait for the response
+//
+template<class NextLayer>
+template<class Handler>
+class stream<NextLayer>::close_op
+{
+    using alloc_type = handler_alloc<char, Handler>;
+
+    using fb_type = detail::frame_streambuf;
+
+    struct data : op
+    {
+        stream<NextLayer>& ws;
+        close_reason cr;
+        Handler h;
+        fb_type fb;
+        bool cont;
+        int state = 0;
+
+        template<class DeducedHandler>
+        data(DeducedHandler&& h_, stream<NextLayer>& ws_,
+                close_reason const& cr_)
+            : ws(ws_)
+            , cr(cr_)
+            , h(std::forward<DeducedHandler>(h_))
+            , cont(boost_asio_handler_cont_helpers::
+                is_continuation(h))
+        {
+            ws.template write_close<
+                static_streambuf>(fb, cr);
+        }
+    };
+
+    std::shared_ptr<data> d_;
+
+public:
+    close_op(close_op&&) = default;
+    close_op(close_op const&) = default;
+
+    template<class DeducedHandler, class... Args>
+    close_op(DeducedHandler&& h,
+            stream<NextLayer>& ws, Args&&... args)
+        : d_(std::allocate_shared<data>(alloc_type{h},
+            std::forward<DeducedHandler>(h), ws,
+                std::forward<Args>(args)...))
+    {
+        (*this)(error_code{}, false);
+    }
+
+    void operator()()
+    {
+        (*this)(error_code{});
+    }
+
+    void
+    operator()(error_code ec, std::size_t);
+
+    void
+    operator()(error_code ec, bool again = true);
+
+    friend
+    void* asio_handler_allocate(
+        std::size_t size, close_op* op)
+    {
+        return boost_asio_handler_alloc_helpers::
+            allocate(size, op->d_->h);
+    }
+
+    friend
+    void asio_handler_deallocate(
+        void* p, std::size_t size, close_op* op)
+    {
+        return boost_asio_handler_alloc_helpers::
+            deallocate(p, size, op->d_->h);
+    }
+
+    friend
+    bool asio_handler_is_continuation(close_op* op)
+    {
+        return op->d_->cont;
+    }
+
+    template<class Function>
+    friend
+    void asio_handler_invoke(Function&& f, close_op* op)
+    {
+        return boost_asio_handler_invoke_helpers::
+            invoke(f, op->d_->h);
+    }
+};
+
+template<class NextLayer>
+template<class Handler>
+void 
+stream<NextLayer>::close_op<Handler>::
+operator()(error_code ec, std::size_t)
+{
+    auto& d = *d_;
+    if(ec)
+        d.ws.failed_ = true;
+    (*this)(ec);
+}
+
+template<class NextLayer>
+template<class Handler>
+void 
+stream<NextLayer>::close_op<Handler>::
+operator()(error_code ec, bool again)
+{
+    auto& d = *d_;
+    d.cont = d.cont || again;
+    if(ec)
+        goto upcall;
+    for(;;)
+    {
+        switch(d.state)
+        {
+        case 0:
+            if(d.ws.wr_block_)
+            {
+                // suspend
+                d.state = 2;
+                d.ws.wr_op_.template emplace<
+                    close_op>(std::move(*this));
+                return;
+            }
+            if(d.ws.failed_ || d.ws.wr_close_)
+            {
+                // call handler
+                d.ws.get_io_service().post(
+                    bind_handler(std::move(*this),
+                        boost::asio::error::operation_aborted));
+                return;
+            }
+            // fall through
+
+        case 1:
+            // send close frame
+            d.state = 99;
+            d.ws.wr_close_ = true;
+            BOOST_ASSERT(! d.ws.wr_block_);
+            d.ws.wr_block_ = &d;
+            boost::asio::async_write(d.ws.stream_,
+                d.fb.data(), std::move(*this));
+            return;
+
+        case 2:
+            d.state = 3;
+            d.ws.get_io_service().post(
+                bind_handler(std::move(*this), ec));
+            return;
+
+        case 3:
+            if(d.ws.failed_ || d.ws.wr_close_)
+            {
+                // call handler
+                ec = boost::asio::error::operation_aborted;
+                goto upcall;
+            }
+            d.state = 1;
+            break;
+
+        case 99:
+            goto upcall;
+        }
+    }
+upcall:
+    if(d.ws.wr_block_ == &d)
+        d.ws.wr_block_ = nullptr;
+    d.ws.rd_op_.maybe_invoke();
+    d.h(ec);
+}
+
+template<class NextLayer>
+template<class CloseHandler>
+typename async_completion<
+    CloseHandler, void(error_code)>::result_type
+stream<NextLayer>::
+async_close(close_reason const& cr, CloseHandler&& handler)
+{
+    static_assert(is_AsyncStream<next_layer_type>::value,
+        "AsyncStream requirements not met");
+    beast::async_completion<
+        CloseHandler, void(error_code)
+            > completion(handler);
+    close_op<decltype(completion.handler)>{
+        completion.handler, *this, cr};
+    return completion.result.get();
+}
+
+template<class NextLayer>
+void
+stream<NextLayer>::
+close(close_reason const& cr)
+{
+    static_assert(is_SyncStream<next_layer_type>::value,
+        "SyncStream requirements not met");
+    error_code ec;
+    close(cr, ec);
+    if(ec)
+        throw system_error{ec};
+}
+
+template<class NextLayer>
+void
+stream<NextLayer>::
+close(close_reason const& cr, error_code& ec)
+{
+    static_assert(is_SyncStream<next_layer_type>::value,
+        "SyncStream requirements not met");
+    BOOST_ASSERT(! wr_close_);
+    wr_close_ = true;
+    detail::frame_streambuf fb;
+    write_close<static_streambuf>(fb, cr);
+    boost::asio::write(stream_, fb.data(), ec);
+    failed_ = ec != 0;
+}
+
+//------------------------------------------------------------------------------
+
+} // websocket
+} // beast
+
+#endif