TcpServer.h

Go to the documentation of this file.

// This file is part of CoreLibrary containing useful reusable utility
// classes.
//
// Copyright (C) 2014 to present, Duncan Crutchley
// Contact <dac1976github@outlook.com>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License and GNU Lesser General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// and GNU Lesser General Public License along with this program. If
// not, see <http://www.gnu.org/licenses/>.

#ifndef TCPSERVER
#define TCPSERVER

#include "IoContextThreadGroup.h"
#include "TcpConnections.h"
#include "Threads/SyncEvent.h"

namespace core_lib
{
namespace asio
{
namespace tcp
{

class CORE_LIBRARY_DLL_SHARED_API TcpServer final
{
public:
    TcpServer() = delete;
    TcpServer(boost_iocontext_t& ioContext, uint16_t listenPort, size_t minAmountToRead,
              const defs::check_bytes_left_to_read_t& checkBytesLeftToRead,
              const defs::message_received_handler_t& messageReceivedHandler,
              eSendOption                             sendOption = eSendOption::nagleOn,
              size_t maxAllowedUnsentAsyncMessages               = MAX_UNSENT_ASYNC_MSG_COUNT);
    TcpServer(uint16_t listenPort, size_t minAmountToRead,
              const defs::check_bytes_left_to_read_t& checkBytesLeftToRead,
              const defs::message_received_handler_t& messageReceivedHandler,
              eSendOption                             sendOption = eSendOption::nagleOn,
              size_t maxAllowedUnsentAsyncMessages               = MAX_UNSENT_ASYNC_MSG_COUNT);
    ~TcpServer();
    TcpServer(const TcpServer&) = delete;
    TcpServer& operator=(const TcpServer&) = delete;
    TcpServer(TcpServer&&) = delete;
    TcpServer& operator=(TcpServer&&) = delete;
    defs::connection_t GetServerDetailsForClient(const defs::connection_t& client) const;
    uint16_t ListenPort() const;
    size_t NumberOfClients() const;
    void CloseAcceptor();
    void OpenAcceptor();
    bool SendMessageToClientAsync(const defs::connection_t&  client,
                                  const defs::char_buffer_t& message) const;
    bool SendMessageToClientSync(const defs::connection_t&  client,
                                 const defs::char_buffer_t& message) const;
    bool SendMessageToAllClients(const defs::char_buffer_t& message) const;
    size_t NumberOfUnsentAsyncMessages(const defs::connection_t& client) const;

    bool IsConnected(const defs::connection_t& client) const;

private:
    void AcceptConnection();
    void AcceptHandler(defs::tcp_conn_ptr_t connection, const boost_sys::error_code& error);
    void ProcessCloseAcceptor();

private:
    std::unique_ptr<IoContextThreadGroup> m_ioThreadGroup{};
    boost_iocontext_t& m_ioContext;
    boost_iocontext_t::strand m_strand;
    std::unique_ptr<boost_tcp_acceptor_t> m_acceptor{};
    uint16_t m_listenPort{0};
    size_t m_minAmountToRead{0};
    defs::check_bytes_left_to_read_t m_checkBytesLeftToRead{};
    defs::message_received_handler_t m_messageReceivedHandler{};
    eSendOption m_sendOption{eSendOption::nagleOn};
    size_t m_maxAllowedUnsentAsyncMessages{MAX_UNSENT_ASYNC_MSG_COUNT};
    TcpConnections m_clientConnections{};
    threads::SyncEvent m_closedEvent{};
};

} // namespace tcp
} // namespace asio
} // namespace core_lib

#endif // TCPSERVER