server/Server.cpp

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