mirror of https://gitee.com/bigwinds/arangodb
113 lines
3.4 KiB
C++
113 lines
3.4 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2016-2018 ArangoDB GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGOD_SCHEDULER_SOCKET_H
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#define ARANGOD_SCHEDULER_SOCKET_H 1
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#include "Basics/Common.h"
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#include <asio/io_context.hpp>
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#include <asio/io_context_strand.hpp>
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#include <asio/buffer.hpp>
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#include "Basics/StringBuffer.h"
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//#include "Basics/asio-helper.h"
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#include "Logger/Logger.h"
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namespace arangodb {
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typedef std::function<void(const asio::error_code& ec,
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std::size_t transferred)>
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AsyncHandler;
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class Socket {
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public:
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Socket(asio::io_context& ioContext, bool encrypted)
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: _encrypted(encrypted), strand(ioContext) {}
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Socket(Socket const& that) = delete;
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Socket(Socket&& that) = delete;
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virtual ~Socket() {}
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bool isEncrypted() const { return _encrypted; }
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bool handshake() {
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if (!_encrypted || _handshakeDone) {
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return true;
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} else if (sslHandshake()) {
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_handshakeDone = true;
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return true;
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}
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return false;
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}
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virtual std::string peerAddress() const = 0;
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virtual int peerPort() const = 0;
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/// Enable non-blocking mode
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virtual void setNonBlocking(bool) = 0;
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virtual size_t writeSome(basics::StringBuffer* buffer,
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asio::error_code& ec) = 0;
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virtual void asyncWrite(asio::mutable_buffers_1 const& buffer,
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AsyncHandler const& handler) = 0;
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virtual size_t readSome(asio::mutable_buffers_1 const& buffer,
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asio::error_code& ec) = 0;
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virtual std::size_t available(asio::error_code& ec) = 0;
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virtual void asyncRead(asio::mutable_buffers_1 const& buffer,
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AsyncHandler const& handler) = 0;
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virtual void close(asio::error_code& ec) = 0;
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void shutdown(asio::error_code& ec, bool mustCloseSend, bool mustCloseReceive) {
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if (mustCloseSend) {
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this->shutdownSend(ec);
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if (ec && ec != asio::error::not_connected) {
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LOG_TOPIC(DEBUG, Logger::COMMUNICATION)
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<< "shutdown send stream failed with: " << ec.message();
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}
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}
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if (mustCloseReceive) {
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this->shutdownReceive(ec);
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if (ec && ec != asio::error::not_connected) {
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LOG_TOPIC(DEBUG, Logger::COMMUNICATION)
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<< "shutdown receive stream failed with: " << ec.message();
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}
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}
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}
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protected:
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virtual bool sslHandshake() = 0;
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virtual void shutdownReceive(asio::error_code& ec) = 0;
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virtual void shutdownSend(asio::error_code& ec) = 0;
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private:
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bool const _encrypted;
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bool _handshakeDone = false;
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public:
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/// Strand to ensure the connection's handlers are not called concurrently.
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asio::io_context::strand strand;
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};
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}
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#endif
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