source/network/server.cpp

   1 #include <msp/core/refptr.h>
   2 #include <msp/net/inet.h>
   3 #include <msp/net/resolve.h>
   4 #include "libr2c2/driver.h"
   5 #include "libr2c2/route.h"
   6 #include "libr2c2/train.h"
   7 #include "libr2c2/trainrouter.h"
   8 #include "libr2c2/trainstatus.h"
   9 #include "libr2c2/vehicletype.h"
  10 #include "server.h"
  11
  12 using namespace std;
  13 using namespace Msp;
  14
  15 namespace R2C2 {
  16
  17 Server::Server(Layout &l):
  18         layout(l),
  19         listen_sock(Net::INET),
  20         event_disp(0)
  21 {
  22         layout.get_driver().signal_power.connect(sigc::hide(sigc::mem_fun(this, &Server::driver_state_changed)));
  23         layout.get_driver().signal_halt.connect(sigc::hide(sigc::mem_fun(this, &Server::driver_state_changed)));
  24         layout.signal_emergency.connect(sigc::mem_fun(this, &Server::emergency));
  25
  26         layout.signal_train_added.connect(sigc::mem_fun(this, &Server::train_added));
  27
  28         const map<unsigned, Train *> &trains = layout.get_trains();
  29         for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
  30                 train_added(*i->second);
  31
  32         RefPtr<Net::SockAddr> addr = Net::resolve("*", "8315", Net::INET);
  33         listen_sock.listen(*addr, 4);
  34         listen_sock.signal_data_available.connect(sigc::mem_fun(this, &Server::incoming_connection));
  35 }
  36
  37 void Server::use_event_dispatcher(IO::EventDispatcher &ed)
  38 {
  39         event_disp = &ed;
  40         event_disp->add(listen_sock);
  41 }
  42
  43 void Server::incoming_connection()
  44 {
  45         Net::StreamSocket *sock = listen_sock.accept();
  46         if(event_disp)
  47                 event_disp->add(*sock);
  48         connections.push_back(new Connection(*this, sock));
  49 }
  50
  51 void Server::driver_state_changed()
  52 {
  53         DriverStatePacket pkt;
  54         pkt.power = layout.get_driver().get_power();
  55         pkt.halt = layout.get_driver().is_halted();
  56         send(pkt);
  57 }
  58
  59 void Server::emergency(const string &msg)
  60 {
  61         EmergencyPacket pkt;
  62         pkt.message = msg;
  63         send(pkt);
  64 }
  65
  66 void Server::train_added(Train &train)
  67 {
  68         train.signal_control_changed.connect(sigc::bind<0>(sigc::mem_fun(this, &Server::train_control_changed), sigc::ref(train)));
  69         train.signal_function_changed.connect(sigc::bind<0>(sigc::mem_fun(this, &Server::train_function_changed), sigc::ref(train)));
  70         train.signal_ai_event.connect(sigc::bind<0>(sigc::mem_fun(this, &Server::train_ai_event), sigc::ref(train)));
  71
  72         TrainInfoPacket pkt;
  73         pkt.address = train.get_address();
  74         pkt.loco_type = train.get_locomotive_type().get_article_number().str();
  75         pkt.name = train.get_name();
  76         send(pkt);
  77
  78         TrainStatus *status = new TrainStatus(train);
  79         status->set_tag("server:status");
  80         status->signal_changed.connect(sigc::bind<0>(sigc::mem_fun(this, &Server::train_status_changed), sigc::ref(train)));
  81 }
  82
  83 void Server::train_control_changed(const Train &train, const string &control, float value)
  84 {
  85         TrainControlPacket pkt;
  86         pkt.address = train.get_address();
  87         pkt.control = control;
  88         pkt.value = value;
  89         send(pkt);
  90 }
  91
  92 void Server::train_function_changed(const Train &train, unsigned, bool)
  93 {
  94         TrainFunctionPacket pkt;
  95         pkt.address = train.get_address();
  96         pkt.functions = train.get_functions();
  97         send(pkt);
  98 }
  99
 100 void Server::train_ai_event(const Train &train, TrainAI &, const TrainAI::Message &ev)
 101 {
 102         if(ev.type=="route-changed")
 103         {
 104                 TrainRoutePacket pkt;
 105                 pkt.address = train.get_address();
 106                 if(const Route *route = ev.value.value<const Route *>())
 107                         pkt.route = route->get_name();
 108                 send(pkt);
 109         }
 110 }
 111
 112 void Server::train_status_changed(const Train &train, const string &status)
 113 {
 114         TrainStatusPacket pkt;
 115         pkt.address = train.get_address();
 116         pkt.status = status;
 117         send(pkt);
 118 }
 119
 120 template<typename P>
 121 void Server::send(const P &pkt)
 122 {
 123         for(vector<Connection *>::const_iterator i=connections.begin(); i!=connections.end(); ++i)
 124                 if(!(*i)->stale && (*i)->comm.is_handshake_done())
 125                 {
 126                         try
 127                         {
 128                                 (*i)->comm.send(pkt);
 129                         }
 130                         catch(...)
 131                         {
 132                                 (*i)->stale = true;
 133                         }
 134                 }
 135 }
 136
 137
 138 Server::Connection::Connection(Server &s, Net::StreamSocket *o):
 139         server(s),
 140         socket(o),
 141         comm(*socket, server.proto, *this)
 142 {
 143         socket->signal_end_of_file.connect(sigc::mem_fun(this, &Connection::end_of_file));
 144         comm.signal_handshake_done.connect(sigc::mem_fun(this, &Connection::handshake_done));
 145         comm.initiate_handshake();
 146 }
 147
 148 Server::Connection::~Connection()
 149 {
 150         delete socket;
 151 }
 152
 153 void Server::Connection::handshake_done()
 154 {
 155         {
 156                 DriverStatePacket pkt;
 157                 pkt.power = server.layout.get_driver().get_power();
 158                 pkt.halt = server.layout.get_driver().is_halted();
 159                 comm.send(pkt);
 160         }
 161
 162         const set<Route *> &routes = server.layout.get_routes();
 163         for(set<Route *>::const_iterator i=routes.begin(); i!=routes.end(); ++i)
 164                 if(!(*i)->is_temporary())
 165                 {
 166                         RouteInfoPacket pkt;
 167                         pkt.name = (*i)->get_name();
 168                         comm.send(pkt);
 169                 }
 170
 171         const map<unsigned, Train *> &trains = server.layout.get_trains();
 172         for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 173         {
 174                 const Train &train = *i->second;
 175
 176                 {
 177                         TrainInfoPacket pkt;
 178                         pkt.address = train.get_address();
 179                         pkt.loco_type = train.get_locomotive_type().get_article_number().str();
 180                         pkt.name = train.get_name();
 181                         comm.send(pkt);
 182                 }
 183                 for(unsigned j=0;; ++j)
 184                 {
 185                         const char *name = train.get_controller().enumerate_controls(j);
 186                         if(!name)
 187                                 break;
 188
 189                         TrainControlPacket pkt;
 190                         pkt.address = train.get_address();
 191                         pkt.control = name;
 192                         pkt.value = train.get_control(name);
 193                         comm.send(pkt);
 194                 }
 195                 {
 196                         TrainFunctionPacket pkt;
 197                         pkt.address = train.get_address();
 198                         pkt.functions = train.get_functions();
 199                         comm.send(pkt);
 200                 }
 201                 if(TrainStatus *status = dynamic_cast<TrainStatus *>(train.get_tagged_ai("server:status")))
 202                 {
 203                         TrainStatusPacket pkt;
 204                         pkt.address = train.get_address();
 205                         pkt.status = status->get_status();
 206                         comm.send(pkt);
 207                 }
 208                 if(TrainRouter *router = dynamic_cast<TrainRouter *>(train.get_tagged_ai("router")))
 209                 {
 210                         TrainRoutePacket pkt;
 211                         pkt.address = train.get_address();
 212                         pkt.route = router->get_route()->get_name();
 213                         comm.send(pkt);
 214                 }
 215         }
 216 }
 217
 218 void Server::Connection::end_of_file()
 219 {
 220         stale = true;
 221 }
 222
 223 void Server::Connection::receive(const DriverStatePacket &pkt)
 224 {
 225         Driver &driver = server.layout.get_driver();
 226         if(pkt.power!=driver.get_power())
 227                 driver.set_power(pkt.power);
 228         if(pkt.halt!=driver.is_halted())
 229                 driver.halt(pkt.halt);
 230 }
 231
 232 void Server::Connection::receive(const TrainControlPacket &pkt)
 233 {
 234         try
 235         {
 236                 Train &train = server.layout.get_train(pkt.address);
 237                 train.set_control(pkt.control, pkt.value);
 238         }
 239         catch(const exception &e)
 240         {
 241                 error(e.what());
 242         }
 243 }
 244
 245 void Server::Connection::receive(const TrainFunctionPacket &pkt)
 246 {
 247         try
 248         {
 249                 Train &train = server.layout.get_train(pkt.address);
 250                 for(unsigned i=0; i<9; ++i)
 251                         if(((pkt.functions^train.get_functions())>>i)&1)
 252                                 train.set_function(i, (pkt.functions>>i)&1);
 253         }
 254         catch(const exception &e)
 255         {
 256                 error(e.what());
 257         }
 258 }
 259
 260 void Server::Connection::receive(const TrainRoutePacket &pkt)
 261 {
 262         try
 263         {
 264                 Train &train = server.layout.get_train(pkt.address);
 265                 if(pkt.route.empty())
 266                         train.ai_message(TrainAI::Message("clear-route"));
 267                 else
 268                 {
 269                         Route &route = server.layout.get_route(pkt.route);
 270                         train.ai_message(TrainAI::Message("set-route", &route));
 271                 }
 272         }
 273         catch(const exception &e)
 274         {
 275                 error(e.what());
 276         }
 277 }
 278
 279 void Server::Connection::error(const string &msg)
 280 {
 281         ErrorPacket pkt;
 282         pkt.message = msg;
 283         comm.send(pkt);
 284 }
 285
 286 } // namespace R2C2