text: // Copyright (c) 2020, The Monero Project
  // All rights reserved.
  //
  // Redistribution and use in source and binary forms, with or without modification, are
  // permitted provided that the following conditions are met:
  //
  // 1. Redistributions of source code must retain the above copyright notice, this list of
  //    conditions and the following disclaimer.
  //
  // 2. Redistributions in binary form must reproduce the above copyright notice, this list
  //    of conditions and the following disclaimer in the documentation and/or other
  //    materials provided with the distribution.
  //
  // 3. Neither the name of the copyright holder nor the names of its contributors may be
  //    used to endorse or promote products derived from this software without specific
  //    prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
  // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  // THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
  // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  #include <boost/bind/bind.hpp>
  #include <boost/thread.hpp>
  #include <boost/optional/optional.hpp>
  
  #include "misc_log_ex.h"
  #include "net/abstract_tcp_server2.h"      // monero/contrib/epee/include
  #include "net/http_protocol_handler.h"     // monero/contrib/epee/include
  #include "net/http_server_handlers_map2.h" // monero/contrib/epee/include
  
  #undef MONERO_DEFAULT_LOG_CATEGORY
  #define MONERO_DEFAULT_LOG_CATEGORY "net.http"
  
  
  namespace lws
  {
    template<class t_child_class, class t_connection_context = epee::net_utils::connection_context_base>
    class http_server_impl_base: public epee::net_utils::http::i_http_server_handler<t_connection_context>
    {
  
    public:
      http_server_impl_base()
          : m_net_server(epee::net_utils::e_connection_type_RPC)
      {}
  
      explicit http_server_impl_base(boost::asio::io_service& external_io_service)
        : m_net_server(external_io_service, epee::net_utils::e_connection_type_RPC)
      {}
  
      bool init(const std::string& bind_port, const std::string& bind_ip,
        std::vector<std::string> access_control_origins, epee::net_utils::ssl_options_t ssl_options)
      {
  
        //set self as callback handler
        m_net_server.get_config_object().m_phandler = static_cast<t_child_class*>(this);
    
        //here set folder for hosting reqests
        m_net_server.get_config_object().m_folder = "";
  
        //set access control allow origins if configured
        std::sort(access_control_origins.begin(), access_control_origins.end());
        m_net_server.get_config_object().m_access_control_origins = std::move(access_control_origins);
  
    
        MGINFO("Binding on " << bind_ip << " (IPv4):" << bind_port);
        bool res = m_net_server.init_server(bind_port, bind_ip, bind_port, std::string{}, false, true, std::move(ssl_options));
        if(!res)
        {
          LOG_ERROR("Failed to bind server");
          return false;
        }
        return true;
      }
  
      bool run(size_t threads_count, bool wait = true)
      {
        //go to loop
        MINFO("Run net_service loop( " << threads_count << " threads)...");
        if(!m_net_server.run_server(threads_count, wait))
        {
          LOG_ERROR("Failed to run net tcp server!");
        }
  
        if(wait)
          MINFO("net_service loop stopped.");
        return true;
      }
  
      bool deinit()
      {
        return m_net_server.deinit_server();
      }
  
      bool timed_wait_server_stop(uint64_t ms)
      {
        return m_net_server.timed_wait_server_stop(ms);
      }
  
      bool send_stop_signal()
      {
        m_net_server.send_stop_signal();
        return true;
      }
  
      int get_binded_port()
      {
        return m_net_server.get_binded_port();
      }
  
      long get_connections_count() const
      {
        return m_net_server.get_connections_count();
      }
  
    protected: 
      epee::net_utils::boosted_tcp_server<epee::net_utils::http::http_custom_handler<t_connection_context> > m_net_server;
    };
  } // lws
  