683 lines
20 KiB
C++
683 lines
20 KiB
C++
// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of the Andrey N. Sabelnikov nor the
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// names of its contributors may be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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#pragma once
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//#include <Winsock2.h>
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//#include <Ws2tcpip.h>
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#include <boost/lexical_cast.hpp>
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#include <iostream>
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#include <istream>
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#include <ostream>
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#include <string>
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#include <boost/asio.hpp>
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#include <boost/preprocessor/selection/min.hpp>
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#include <boost/lambda/bind.hpp>
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#include <boost/lambda/lambda.hpp>
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#include <boost/interprocess/detail/atomic.hpp>
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#include "net/net_utils_base.h"
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#include "misc_language.h"
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//#include "profile_tools.h"
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#include "../string_tools.h"
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#ifndef MAKE_IP
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#define MAKE_IP( a1, a2, a3, a4 ) (a1|(a2<<8)|(a3<<16)|(a4<<24))
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#endif
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namespace epee
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{
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namespace net_utils
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{
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class blocked_mode_client
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{
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struct handler_obj
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{
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handler_obj(boost::system::error_code& error, size_t& bytes_transferred):ref_error(error), ref_bytes_transferred(bytes_transferred)
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{}
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handler_obj(const handler_obj& other_obj):ref_error(other_obj.ref_error), ref_bytes_transferred(other_obj.ref_bytes_transferred)
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{}
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boost::system::error_code& ref_error;
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size_t& ref_bytes_transferred;
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void operator()(const boost::system::error_code& error, // Result of operation.
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std::size_t bytes_transferred // Number of bytes read.
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)
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{
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ref_error = error;
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ref_bytes_transferred = bytes_transferred;
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}
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};
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public:
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inline
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blocked_mode_client():m_socket(m_io_service),
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m_initialized(false),
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m_connected(false),
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m_deadline(m_io_service),
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m_shutdowned(0)
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{
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m_initialized = true;
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// No deadline is required until the first socket operation is started. We
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// set the deadline to positive infinity so that the actor takes no action
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// until a specific deadline is set.
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m_deadline.expires_at(boost::posix_time::pos_infin);
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// Start the persistent actor that checks for deadline expiry.
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check_deadline();
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}
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inline
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~blocked_mode_client()
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{
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//profile_tools::local_coast lc("~blocked_mode_client()", 3);
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shutdown();
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}
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inline void set_recv_timeout(int reciev_timeout)
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{
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m_reciev_timeout = reciev_timeout;
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}
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inline
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bool connect(const std::string& addr, int port, unsigned int connect_timeout, unsigned int reciev_timeout, const std::string& bind_ip = "0.0.0.0")
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{
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return connect(addr, std::to_string(port), connect_timeout, reciev_timeout, bind_ip);
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}
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inline
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bool connect(const std::string& addr, const std::string& port, unsigned int connect_timeout, unsigned int reciev_timeout, const std::string& bind_ip = "0.0.0.0")
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{
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m_connect_timeout = connect_timeout;
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m_reciev_timeout = reciev_timeout;
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m_connected = false;
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if(!m_reciev_timeout)
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m_reciev_timeout = m_connect_timeout;
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try
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{
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m_socket.close();
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// Get a list of endpoints corresponding to the server name.
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//////////////////////////////////////////////////////////////////////////
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boost::asio::ip::tcp::resolver resolver(m_io_service);
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boost::asio::ip::tcp::resolver::query query(boost::asio::ip::tcp::v4(), addr, port);
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boost::asio::ip::tcp::resolver::iterator iterator = resolver.resolve(query);
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boost::asio::ip::tcp::resolver::iterator end;
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if(iterator == end)
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{
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LOG_ERROR("Failed to resolve " << addr);
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return false;
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}
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//////////////////////////////////////////////////////////////////////////
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//boost::asio::ip::tcp::endpoint remote_endpoint(boost::asio::ip::address::from_string(addr.c_str()), port);
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boost::asio::ip::tcp::endpoint remote_endpoint(*iterator);
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m_socket.open(remote_endpoint.protocol());
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if(bind_ip != "0.0.0.0" && bind_ip != "0" && bind_ip != "" )
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{
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boost::asio::ip::tcp::endpoint local_endpoint(boost::asio::ip::address::from_string(addr.c_str()), 0);
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m_socket.bind(local_endpoint);
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}
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m_deadline.expires_from_now(boost::posix_time::milliseconds(m_connect_timeout));
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boost::system::error_code ec = boost::asio::error::would_block;
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//m_socket.connect(remote_endpoint);
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m_socket.async_connect(remote_endpoint, boost::lambda::var(ec) = boost::lambda::_1);
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while (ec == boost::asio::error::would_block)
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{
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m_io_service.run_one();
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}
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if (!ec && m_socket.is_open())
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{
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m_connected = true;
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m_deadline.expires_at(boost::posix_time::pos_infin);
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return true;
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}else
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{
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LOG_PRINT("Some problems at connect, message: " << ec.message(), LOG_LEVEL_3);
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return false;
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}
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}
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catch(const boost::system::system_error& er)
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{
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LOG_PRINT("Some problems at connect, message: " << er.what(), LOG_LEVEL_4);
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return false;
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}
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catch(...)
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{
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LOG_PRINT("Some fatal problems.", LOG_LEVEL_4);
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return false;
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}
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return true;
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}
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inline
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bool disconnect()
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{
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try
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{
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if(m_connected)
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{
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m_connected = false;
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m_socket.shutdown(boost::asio::ip::tcp::socket::shutdown_both);
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}
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}
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catch(const boost::system::system_error& /*er*/)
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{
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//LOG_ERROR("Some problems at disconnect, message: " << er.what());
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return false;
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}
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catch(...)
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{
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//LOG_ERROR("Some fatal problems.");
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return false;
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}
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return true;
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}
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inline
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bool send(const std::string& buff)
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{
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try
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{
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m_deadline.expires_from_now(boost::posix_time::milliseconds(m_reciev_timeout));
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// Set up the variable that receives the result of the asynchronous
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// operation. The error code is set to would_block to signal that the
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// operation is incomplete. Asio guarantees that its asynchronous
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// operations will never fail with would_block, so any other value in
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// ec indicates completion.
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boost::system::error_code ec = boost::asio::error::would_block;
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// Start the asynchronous operation itself. The boost::lambda function
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// object is used as a callback and will update the ec variable when the
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// operation completes. The blocking_udp_client.cpp example shows how you
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// can use boost::bind rather than boost::lambda.
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boost::asio::async_write(m_socket, boost::asio::buffer(buff), boost::lambda::var(ec) = boost::lambda::_1);
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// Block until the asynchronous operation has completed.
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while (ec == boost::asio::error::would_block)
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{
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m_io_service.run_one();
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}
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if (ec)
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{
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LOG_PRINT_L3("Problems at write: " << ec.message());
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m_connected = false;
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return false;
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}else
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{
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m_deadline.expires_at(boost::posix_time::pos_infin);
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}
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}
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catch(const boost::system::system_error& er)
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{
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LOG_ERROR("Some problems at connect, message: " << er.what());
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return false;
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}
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catch(...)
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{
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LOG_ERROR("Some fatal problems.");
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return false;
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}
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return true;
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}
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inline
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bool send(const void* data, size_t sz)
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{
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try
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{
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/*
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m_deadline.expires_from_now(boost::posix_time::milliseconds(m_reciev_timeout));
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// Set up the variable that receives the result of the asynchronous
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// operation. The error code is set to would_block to signal that the
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// operation is incomplete. Asio guarantees that its asynchronous
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// operations will never fail with would_block, so any other value in
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// ec indicates completion.
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boost::system::error_code ec = boost::asio::error::would_block;
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// Start the asynchronous operation itself. The boost::lambda function
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// object is used as a callback and will update the ec variable when the
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// operation completes. The blocking_udp_client.cpp example shows how you
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// can use boost::bind rather than boost::lambda.
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boost::asio::async_write(m_socket, boost::asio::buffer(data, sz), boost::lambda::var(ec) = boost::lambda::_1);
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// Block until the asynchronous operation has completed.
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while (ec == boost::asio::error::would_block)
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{
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m_io_service.run_one();
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}
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*/
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boost::system::error_code ec;
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size_t writen = m_socket.write_some(boost::asio::buffer(data, sz), ec);
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if (!writen || ec)
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{
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LOG_PRINT_L3("Problems at write: " << ec.message());
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m_connected = false;
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return false;
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}else
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{
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m_deadline.expires_at(boost::posix_time::pos_infin);
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}
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}
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catch(const boost::system::system_error& er)
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{
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LOG_ERROR("Some problems at send, message: " << er.what());
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m_connected = false;
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return false;
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}
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catch(...)
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{
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LOG_ERROR("Some fatal problems.");
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return false;
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}
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return true;
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}
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bool is_connected()
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{
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return m_connected && m_socket.is_open();
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//TRY_ENTRY()
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//return m_socket.is_open();
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//CATCH_ENTRY_L0("is_connected", false)
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}
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inline
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bool recv(std::string& buff)
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{
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try
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{
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// Set a deadline for the asynchronous operation. Since this function uses
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// a composed operation (async_read_until), the deadline applies to the
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// entire operation, rather than individual reads from the socket.
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m_deadline.expires_from_now(boost::posix_time::milliseconds(m_reciev_timeout));
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// Set up the variable that receives the result of the asynchronous
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// operation. The error code is set to would_block to signal that the
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// operation is incomplete. Asio guarantees that its asynchronous
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// operations will never fail with would_block, so any other value in
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// ec indicates completion.
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//boost::system::error_code ec = boost::asio::error::would_block;
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// Start the asynchronous operation itself. The boost::lambda function
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// object is used as a callback and will update the ec variable when the
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// operation completes. The blocking_udp_client.cpp example shows how you
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// can use boost::bind rather than boost::lambda.
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boost::system::error_code ec = boost::asio::error::would_block;
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size_t bytes_transfered = 0;
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handler_obj hndlr(ec, bytes_transfered);
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char local_buff[10000] = {0};
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//m_socket.async_read_some(boost::asio::buffer(local_buff, sizeof(local_buff)), hndlr);
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boost::asio::async_read(m_socket, boost::asio::buffer(local_buff, sizeof(local_buff)), boost::asio::transfer_at_least(1), hndlr);
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// Block until the asynchronous operation has completed.
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while (ec == boost::asio::error::would_block && !boost::interprocess::ipcdetail::atomic_read32(&m_shutdowned))
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{
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m_io_service.run_one();
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}
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if (ec)
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{
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LOG_PRINT_L4("READ ENDS: Connection err_code " << ec.value());
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if(ec == boost::asio::error::eof)
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{
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LOG_PRINT_L4("Connection err_code eof.");
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//connection closed there, empty
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return true;
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}
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LOG_PRINT_L3("Problems at read: " << ec.message());
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m_connected = false;
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return false;
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}else
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{
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LOG_PRINT_L4("READ ENDS: Success. bytes_tr: " << bytes_transfered);
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m_deadline.expires_at(boost::posix_time::pos_infin);
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}
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/*if(!bytes_transfered)
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return false;*/
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buff.assign(local_buff, bytes_transfered);
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return true;
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}
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catch(const boost::system::system_error& er)
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{
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LOG_ERROR("Some problems at read, message: " << er.what());
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m_connected = false;
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return false;
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}
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catch(...)
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{
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LOG_ERROR("Some fatal problems at read.");
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return false;
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}
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return false;
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}
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inline bool recv_n(std::string& buff, int64_t sz)
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{
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try
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{
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// Set a deadline for the asynchronous operation. Since this function uses
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// a composed operation (async_read_until), the deadline applies to the
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// entire operation, rather than individual reads from the socket.
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m_deadline.expires_from_now(boost::posix_time::milliseconds(m_reciev_timeout));
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// Set up the variable that receives the result of the asynchronous
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// operation. The error code is set to would_block to signal that the
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// operation is incomplete. Asio guarantees that its asynchronous
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// operations will never fail with would_block, so any other value in
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// ec indicates completion.
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//boost::system::error_code ec = boost::asio::error::would_block;
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// Start the asynchronous operation itself. The boost::lambda function
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// object is used as a callback and will update the ec variable when the
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// operation completes. The blocking_udp_client.cpp example shows how you
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// can use boost::bind rather than boost::lambda.
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buff.resize(static_cast<size_t>(sz));
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boost::system::error_code ec = boost::asio::error::would_block;
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size_t bytes_transfered = 0;
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handler_obj hndlr(ec, bytes_transfered);
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//char local_buff[10000] = {0};
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boost::asio::async_read(m_socket, boost::asio::buffer((char*)buff.data(), buff.size()), boost::asio::transfer_at_least(buff.size()), hndlr);
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// Block until the asynchronous operation has completed.
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while (ec == boost::asio::error::would_block && !boost::interprocess::ipcdetail::atomic_read32(&m_shutdowned))
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{
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m_io_service.run_one();
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}
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if (ec)
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{
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LOG_PRINT_L3("Problems at read: " << ec.message());
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m_connected = false;
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return false;
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}else
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{
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m_deadline.expires_at(boost::posix_time::pos_infin);
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}
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if(bytes_transfered != buff.size())
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{
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LOG_ERROR("Transferred missmatch with transfer_at_least value: m_bytes_transferred=" << bytes_transfered << " at_least value=" << buff.size());
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return false;
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}
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return true;
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}
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catch(const boost::system::system_error& er)
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{
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LOG_ERROR("Some problems at read, message: " << er.what());
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m_connected = false;
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return false;
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}
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catch(...)
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{
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LOG_ERROR("Some fatal problems at read.");
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return false;
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}
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return false;
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}
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bool shutdown()
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{
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m_deadline.cancel();
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boost::system::error_code ignored_ec;
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m_socket.cancel(ignored_ec);
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m_socket.shutdown(boost::asio::ip::tcp::socket::shutdown_both, ignored_ec);
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m_socket.close(ignored_ec);
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boost::interprocess::ipcdetail::atomic_write32(&m_shutdowned, 1);
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m_connected = false;
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return true;
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}
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void set_connected(bool connected)
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{
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m_connected = connected;
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}
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boost::asio::io_service& get_io_service()
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{
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return m_io_service;
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}
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boost::asio::ip::tcp::socket& get_socket()
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{
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return m_socket;
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}
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private:
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void check_deadline()
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{
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// Check whether the deadline has passed. We compare the deadline against
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// the current time since a new asynchronous operation may have moved the
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// deadline before this actor had a chance to run.
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if (m_deadline.expires_at() <= boost::asio::deadline_timer::traits_type::now())
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{
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// The deadline has passed. The socket is closed so that any outstanding
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// asynchronous operations are cancelled. This allows the blocked
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// connect(), read_line() or write_line() functions to return.
|
|
LOG_PRINT_L3("Timed out socket");
|
|
m_connected = false;
|
|
m_socket.close();
|
|
|
|
// There is no longer an active deadline. The expiry is set to positive
|
|
// infinity so that the actor takes no action until a new deadline is set.
|
|
m_deadline.expires_at(boost::posix_time::pos_infin);
|
|
}
|
|
|
|
// Put the actor back to sleep.
|
|
m_deadline.async_wait(boost::bind(&blocked_mode_client::check_deadline, this));
|
|
}
|
|
|
|
|
|
|
|
protected:
|
|
boost::asio::io_service m_io_service;
|
|
boost::asio::ip::tcp::socket m_socket;
|
|
int m_connect_timeout;
|
|
int m_reciev_timeout;
|
|
bool m_initialized;
|
|
bool m_connected;
|
|
boost::asio::deadline_timer m_deadline;
|
|
volatile uint32_t m_shutdowned;
|
|
};
|
|
|
|
|
|
/************************************************************************/
|
|
/* */
|
|
/************************************************************************/
|
|
class async_blocked_mode_client: public blocked_mode_client
|
|
{
|
|
public:
|
|
async_blocked_mode_client():m_send_deadline(blocked_mode_client::m_io_service)
|
|
{
|
|
|
|
// No deadline is required until the first socket operation is started. We
|
|
// set the deadline to positive infinity so that the actor takes no action
|
|
// until a specific deadline is set.
|
|
m_send_deadline.expires_at(boost::posix_time::pos_infin);
|
|
|
|
// Start the persistent actor that checks for deadline expiry.
|
|
check_send_deadline();
|
|
}
|
|
~async_blocked_mode_client()
|
|
{
|
|
m_send_deadline.cancel();
|
|
}
|
|
|
|
bool shutdown()
|
|
{
|
|
blocked_mode_client::shutdown();
|
|
m_send_deadline.cancel();
|
|
return true;
|
|
}
|
|
|
|
inline
|
|
bool send(const void* data, size_t sz)
|
|
{
|
|
try
|
|
{
|
|
/*
|
|
m_send_deadline.expires_from_now(boost::posix_time::milliseconds(m_reciev_timeout));
|
|
|
|
// Set up the variable that receives the result of the asynchronous
|
|
// operation. The error code is set to would_block to signal that the
|
|
// operation is incomplete. Asio guarantees that its asynchronous
|
|
// operations will never fail with would_block, so any other value in
|
|
// ec indicates completion.
|
|
boost::system::error_code ec = boost::asio::error::would_block;
|
|
|
|
// Start the asynchronous operation itself. The boost::lambda function
|
|
// object is used as a callback and will update the ec variable when the
|
|
// operation completes. The blocking_udp_client.cpp example shows how you
|
|
// can use boost::bind rather than boost::lambda.
|
|
boost::asio::async_write(m_socket, boost::asio::buffer(data, sz), boost::lambda::var(ec) = boost::lambda::_1);
|
|
|
|
// Block until the asynchronous operation has completed.
|
|
while(ec == boost::asio::error::would_block)
|
|
{
|
|
m_io_service.run_one();
|
|
}*/
|
|
|
|
boost::system::error_code ec;
|
|
|
|
size_t writen = m_socket.write_some(boost::asio::buffer(data, sz), ec);
|
|
|
|
if (!writen || ec)
|
|
{
|
|
LOG_PRINT_L3("Problems at write: " << ec.message());
|
|
return false;
|
|
}else
|
|
{
|
|
m_send_deadline.expires_at(boost::posix_time::pos_infin);
|
|
}
|
|
}
|
|
|
|
catch(const boost::system::system_error& er)
|
|
{
|
|
LOG_ERROR("Some problems at connect, message: " << er.what());
|
|
return false;
|
|
}
|
|
catch(...)
|
|
{
|
|
LOG_ERROR("Some fatal problems.");
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
private:
|
|
|
|
boost::asio::deadline_timer m_send_deadline;
|
|
|
|
void check_send_deadline()
|
|
{
|
|
// Check whether the deadline has passed. We compare the deadline against
|
|
// the current time since a new asynchronous operation may have moved the
|
|
// deadline before this actor had a chance to run.
|
|
if (m_send_deadline.expires_at() <= boost::asio::deadline_timer::traits_type::now())
|
|
{
|
|
// The deadline has passed. The socket is closed so that any outstanding
|
|
// asynchronous operations are cancelled. This allows the blocked
|
|
// connect(), read_line() or write_line() functions to return.
|
|
LOG_PRINT_L3("Timed out socket");
|
|
m_socket.close();
|
|
|
|
// There is no longer an active deadline. The expiry is set to positive
|
|
// infinity so that the actor takes no action until a new deadline is set.
|
|
m_send_deadline.expires_at(boost::posix_time::pos_infin);
|
|
}
|
|
|
|
// Put the actor back to sleep.
|
|
m_send_deadline.async_wait(boost::bind(&async_blocked_mode_client::check_send_deadline, this));
|
|
}
|
|
};
|
|
}
|
|
}
|