server/Server.cpp

   1 //
   2 // Server.cpp
   3 //
   4
   5 #include "Server.hpp"
   6 #include <algorithm>
   7 #include <boost/make_shared.hpp>
   8 #include <boost/foreach.hpp>
   9 #include "../common/Logger.hpp"
  10 #include "../common/network/Command.hpp"
  11 #include "../common/network/Utils.hpp"
  12
  13 namespace network {
  14
  15     Server::Server(uint16_t port) :
  16             endpoint_(tcp::v4(), port),
  17             acceptor_(io_service_, endpoint_),
  18             socket_udp_(io_service_, udp::endpoint(udp::v4(), port)),
  19             udp_packet_count_(0),
  20             max_total_read_average_(5000),
  21             max_session_read_average_(600),
  22             min_session_read_average_(100),
  23             session_read_average_(200)
  24     {
  25     }
  26
  27     void Server::Start(CallbackFuncPtr callback)
  28     {
  29         callback_ = std::make_shared<CallbackFunc>(
  30                 [&](network::Command c){
  31
  32             // ログアウト
  33             if (c.header() == network::header::FatalConnectionError) {
  34                 // 受信制限量を更新
  35                 /*
  36                 auto new_average = GetSessionReadAverageLimit();
  37                 if (session_read_average_ != new_average) {
  38                     session_read_average_ = new_average;
  39                     SendAll(network::ClientReceiveWriteAverageLimitUpdate(session_read_average_));
  40                 }
  41                 */
  42             }
  43
  44             // 通信量制限を越えていた場合、強制的に切断
  45             else if (auto session = c.session().lock()) {
  46                 if (session->GetReadByteAverage() > session_read_average_) {
  47                                         Logger::Info(_T("Banished session: %d"), session->id());
  48                     session->Close();
  49                 }
  50             }
  51
  52             if (callback) {
  53                 (*callback)(c);
  54             }
  55         });
  56
  57         {
  58         auto new_session = boost::make_shared<ServerSession>(io_service_);
  59         acceptor_.async_accept(new_session->tcp_socket(),
  60                               boost::bind(&Server::ReceiveSession, this, new_session, boost::asio::placeholders::error));
  61         }
  62
  63         {
  64             socket_udp_.async_receive_from(
  65                 boost::asio::buffer(receive_buf_udp_, UDP_MAX_RECEIVE_LENGTH), sender_endpoint_,
  66                 boost::bind(&Server::ReceiveUDP, this,
  67                   boost::asio::placeholders::error,
  68                   boost::asio::placeholders::bytes_transferred));
  69         }
  70
  71         boost::asio::io_service::work work(io_service_);
  72         io_service_.run();
  73     }
  74
  75     void Server::Stop()
  76     {
  77         io_service_.stop();
  78     }
  79
  80     bool Server::Empty() const
  81     {
  82         return sessions_.size() == 0;
  83     }
  84
  85     void Server::ReceiveSession(const SessionPtr& session, const boost::system::error_code& error)
  86     {
  87         if (session_read_average_ > min_session_read_average_) {
  88             session->set_on_receive(callback_);
  89             session->Start();
  90             sessions_.push_back(SessionWeakPtr(session));
  91
  92             // クライアント情報を要求
  93             session->Send(ClientRequestedClientInfo());
  94
  95             // 受信制限量を更新
  96             auto new_average = GetSessionReadAverageLimit();
  97             session->Send(network::ClientReceiveWriteAverageLimitUpdate(session_read_average_));
  98
  99             if (session_read_average_ != new_average) {
 100                 session_read_average_ = new_average;
 101                 SendOthers(network::ClientReceiveWriteAverageLimitUpdate(session_read_average_),
 102                         session);
 103             }
 104
 105         } else {
 106             Logger::Info("Refuse Session");
 107             session->SyncSend(ClientReceiveServerCrowdedError());
 108             session->Close();
 109         }
 110
 111         auto new_session = boost::make_shared<ServerSession>(io_service_);
 112          acceptor_.async_accept(new_session->tcp_socket(),
 113                  boost::bind(&Server::ReceiveSession, this, new_session, boost::asio::placeholders::error));
 114
 115         // 使用済のセッションのポインタを破棄
 116         auto it = std::remove_if(sessions_.begin(), sessions_.end(),
 117                 [](const SessionWeakPtr& ptr){
 118             return ptr.expired();
 119         });
 120         sessions_.erase(it, sessions_.end());
 121
 122     }
 123
 124     void Server::SendAll(const Command& command)
 125     {
 126         BOOST_FOREACH(SessionWeakPtr& ptr, sessions_) {
 127             if (auto session = ptr.lock()) {
 128                 session->Send(command);
 129             }
 130         }
 131     }
 132
 133     void Server::SendOthers(const Command& command, SessionWeakPtr self_ptr)
 134     {
 135         BOOST_FOREACH(SessionWeakPtr& ptr, sessions_) {
 136             if (auto session = ptr.lock()) {
 137                 if (auto self = self_ptr.lock()) {
 138                     if (*session != *self) {
 139                         session->Send(command);
 140                     }
 141                 }
 142             }
 143         }
 144     }
 145
 146     void Server::SendUDPTestPacket(const std::string& ip_address, uint16_t port)
 147     {
 148         using boost::asio::ip::udp;
 149
 150         std::stringstream port_str;
 151         port_str << (int)port;
 152
 153         udp::resolver resolver(io_service_);
 154         udp::resolver::query query(udp::v4(), ip_address.c_str(), port_str.str().c_str());
 155         udp::resolver::iterator iterator = resolver.resolve(query);
 156
 157         static char request[] = "MMO UDP Test Packet";
 158         for (int i = 0; i < UDP_TEST_PACKET_TIME; i++) {
 159
 160             io_service_.post(boost::bind(&Server::DoWriteUDP, this, request, *iterator));
 161         }
 162     }
 163
 164     void Server::ReceiveUDP(const boost::system::error_code& error, size_t bytes_recvd)
 165     {
 166         if (bytes_recvd > 0) {
 167             std::string buffer(receive_buf_udp_, bytes_recvd);
 168             FetchUDP(buffer);
 169         }
 170         if (!error) {
 171           socket_udp_.async_receive_from(
 172               boost::asio::buffer(receive_buf_udp_, UDP_MAX_RECEIVE_LENGTH), sender_endpoint_,
 173               boost::bind(&Server::ReceiveUDP, this,
 174                 boost::asio::placeholders::error,
 175                 boost::asio::placeholders::bytes_transferred));
 176         } else {
 177             Logger::Error("%s", error.message());
 178         }
 179     }
 180
 181     void Server::DoWriteUDP(const std::string& msg, const udp::endpoint& endpoint)
 182     {
 183         boost::shared_ptr<std::string> s =
 184               boost::make_shared<std::string>(msg.data(), msg.size());
 185
 186         socket_udp_.async_send_to(
 187             boost::asio::buffer(s->data(), s->size()), endpoint,
 188             boost::bind(&Server::WriteUDP, this,
 189               boost::asio::placeholders::error, s));
 190     }
 191
 192     void Server::WriteUDP(const boost::system::error_code& error, boost::shared_ptr<std::string> holder)
 193     {
 194 //        if (!error) {
 195 //            if (!send_queue_.empty()) {
 196 //                  send_queue_.pop();
 197 //                  if (!send_queue_.empty())
 198 //                  {
 199 //                    boost::asio::async_write(socket_tcp_,
 200 //                        boost::asio::buffer(send_queue_.front().data(),
 201 //                          send_queue_.front().size()),
 202 //                        boost::bind(&Session::WriteTCP, this,
 203 //                          boost::asio::placeholders::error));
 204 //                  }
 205 //            }
 206 //        } else {
 207 //            FatalError();
 208 //        }
 209     }
 210
 211     Command Server::FetchUDP(const std::string& buffer)
 212     {
 213         uint32_t user_id;
 214         unsigned char count;
 215         header::CommandHeader header;
 216         std::string body;
 217         SessionPtr session;
 218
 219         size_t readed = network::Utils::Deserialize(buffer, &user_id, &count, &header);
 220         if (readed < buffer.size()) {
 221             body = buffer.substr(readed);
 222         }
 223
 224         return Command(header, body, session);
 225     }
 226
 227     void Server::ServerSession::Start()
 228     {
 229         online_ = true;
 230
 231         // Nagleアルゴリズムを無効化
 232         socket_tcp_.set_option(boost::asio::ip::tcp::no_delay(true));
 233
 234         // IPアドレスを取得
 235         global_ip_ = socket_tcp_.remote_endpoint().address().to_string();
 236
 237         boost::asio::async_read_until(socket_tcp_,
 238             receive_buf_, NETWORK_UTILS_DELIMITOR,
 239             boost::bind(
 240               &ServerSession::ReceiveTCP, shared_from_this(),
 241               boost::asio::placeholders::error));
 242     }
 243
 244     int Server::GetSessionReadAverageLimit()
 245     {
 246         int byte = max_total_read_average_ / (sessions_.size() + 1);
 247         byte = std::min(byte, max_session_read_average_);
 248
 249         return byte;
 250     }
 251
 252     int Server::max_total_read_average() const
 253     {
 254         return max_total_read_average_;
 255     }
 256
 257     int Server::max_session_read_average() const
 258     {
 259         return max_session_read_average_;
 260     }
 261
 262     int Server::min_session_read_average() const
 263     {
 264         return min_session_read_average_;
 265     }
 266
 267     void Server::set_max_total_read_average(int byte)
 268     {
 269         max_total_read_average_ = byte;
 270     }
 271
 272     void Server::set_max_session_read_average(int byte)
 273     {
 274         max_session_read_average_ = byte;
 275     }
 276
 277     void Server::set_min_session_read_average(int byte)
 278     {
 279         min_session_read_average_ = byte;
 280     }
 281
 282 }