void PacketBroker::receive(sf::Packet& packet, Protocol protocol)
{
using namespace sf;
if (protocol == Protocol::TCP)
{
if (Globals::Networking->ReceiveSafe(packet) != Socket::Status::Done)
return;
}
else
{
PacketHandler::RemoteAddress remoteAddress;
if (Globals::Networking->ReceiveFast(packet, remoteAddress) != Socket::Status::Done)
return;
if (!Globals::Networking->isConnectedAddress(remoteAddress))
return;
ushort sequence = 0;
packet >> sequence;
// TODO: Rejection threshold
if (sequence == 0 || sequence <= lastSequence)
{
PrintDebug(">> Received out of order packet. Rejecting.");
lastSequence = sequence % USHRT_MAX;
return;
}
lastSequence = sequence % USHRT_MAX;
}
PlayerNumber pnum = -1;
if (netStat)
addBytesReceived(packet.getDataSize());
while (!packet.endOfPacket())
{
MessageID newType;
packet >> newType;
// TODO: Re-implement packet loop failsafe using read offset.
switch (newType)
{
case MessageID::None:
PrintDebug("\a>> Reached end of packet.");
break;
case MessageID::Count:
PrintDebug(">> Received message count?! Malformed packet warning!");
break;
case MessageID::N_Disconnect:
PrintDebug(">> Received disconnect request from client.");
Globals::Networking->Disconnect();
break;
case MessageID::N_Ready:
{
MessageID waitID; packet >> waitID;
auto it = waitRequests.find(waitID);
if (it != waitRequests.end())
{
it->second = true;
}
else
{
waitRequests[waitID] = true;
}
break;
}
case MessageID::N_PlayerNumber:
packet >> pnum;
break;
// TODO: verification that this is from the host
case MessageID::N_SetPlayer:
{
PlayerNumber changed;
packet >> changed;
SetPlayerNumber(changed);
break;
}
case MessageID::S_KeepAlive:
receivedKeepalive = Millisecs();
packet.seekRead(sizeof(ushort), SEEK_CUR);
break;
default:
{
if (newType < MessageID::N_END)
{
packet.clear();
break;
}
ushort length;
packet >> length;
AddTypeReceived(newType, length, protocol == Protocol::TCP);
if (pnum >= 0)
{
if (receiveSystem(newType, pnum, packet))
break;
if (pnum != playerNum)
{
if (!writePlayer)
inPlayer.Copy(Player[pnum]);
if (receivePlayer(newType, pnum, packet))
{
if (GameState >= GameState::Ingame)
{
writePlayer = false;
PlayerObject::WritePlayer(Player[pnum], &inPlayer);
}
break;
}
}
if (receiveMenu(newType, pnum, packet))
break;
}
if (runMessageHandler(newType, pnum, packet))
break;
PrintDebug("\t\t[P%d] Skipping %d bytes for id %02d", pnum, length, newType);
packet.seekRead(length, SEEK_CUR);
break;
}
}
}
}
// called from ---NETPLAY--- thread
unsigned int NetPlayServer::OnData(sf::Packet& packet, Client& player)
{
MessageId mid;
packet >> mid;
INFO_LOG(NETPLAY, "Got client message: %x", mid);
// don't need lock because this is the only thread that modifies the players
// only need locks for writes to m_players in this thread
switch (mid)
{
case NP_MSG_CHAT_MESSAGE:
{
std::string msg;
packet >> msg;
// send msg to other clients
sf::Packet spac;
spac << (MessageId)NP_MSG_CHAT_MESSAGE;
spac << player.pid;
spac << msg;
SendToClients(spac, player.pid);
}
break;
case NP_MSG_PAD_DATA:
{
// if this is pad data from the last game still being received, ignore it
if (player.current_game != m_current_game)
break;
sf::Packet spac;
spac << static_cast<MessageId>(NP_MSG_PAD_DATA);
while (!packet.endOfPacket())
{
PadMapping map;
packet >> map;
// If the data is not from the correct player,
// then disconnect them.
if (m_pad_map.at(map) != player.pid)
{
return 1;
}
GCPadStatus pad;
packet >> pad.button >> pad.analogA >> pad.analogB >> pad.stickX >> pad.stickY >>
pad.substickX >> pad.substickY >> pad.triggerLeft >> pad.triggerRight >> pad.isConnected;
if (m_host_input_authority)
{
m_last_pad_status[map] = pad;
if (!m_first_pad_status_received[map])
{
m_first_pad_status_received[map] = true;
SendFirstReceivedToHost(map, true);
}
}
else
{
spac << map << pad.button << pad.analogA << pad.analogB << pad.stickX << pad.stickY
<< pad.substickX << pad.substickY << pad.triggerLeft << pad.triggerRight
<< pad.isConnected;
}
}
if (!m_host_input_authority)
SendToClients(spac, player.pid);
}
break;
case NP_MSG_PAD_HOST_POLL:
{
PadMapping pad_num;
packet >> pad_num;
sf::Packet spac;
spac << static_cast<MessageId>(NP_MSG_PAD_DATA);
if (pad_num < 0)
{
for (size_t i = 0; i < m_pad_map.size(); i++)
{
if (m_pad_map[i] == -1)
continue;
const GCPadStatus& pad = m_last_pad_status[i];
spac << static_cast<PadMapping>(i) << pad.button << pad.analogA << pad.analogB << pad.stickX
<< pad.stickY << pad.substickX << pad.substickY << pad.triggerLeft << pad.triggerRight
<< pad.isConnected;
}
}
else if (m_pad_map.at(pad_num) != -1)
{
const GCPadStatus& pad = m_last_pad_status[pad_num];
spac << pad_num << pad.button << pad.analogA << pad.analogB << pad.stickX << pad.stickY
<< pad.substickX << pad.substickY << pad.triggerLeft << pad.triggerRight
<< pad.isConnected;
}
SendToClients(spac);
}
break;
case NP_MSG_WIIMOTE_DATA:
{
// if this is Wiimote data from the last game still being received, ignore it
if (player.current_game != m_current_game)
break;
PadMapping map = 0;
u8 size;
packet >> map >> size;
std::vector<u8> data(size);
for (size_t i = 0; i < data.size(); ++i)
packet >> data[i];
// If the data is not from the correct player,
// then disconnect them.
if (m_wiimote_map.at(map) != player.pid)
{
return 1;
}
// relay to clients
sf::Packet spac;
spac << (MessageId)NP_MSG_WIIMOTE_DATA;
spac << map;
spac << size;
for (const u8& byte : data)
spac << byte;
SendToClients(spac, player.pid);
}
break;
case NP_MSG_PONG:
{
const u32 ping = (u32)m_ping_timer.GetTimeElapsed();
u32 ping_key = 0;
packet >> ping_key;
if (m_ping_key == ping_key)
{
player.ping = ping;
}
sf::Packet spac;
spac << (MessageId)NP_MSG_PLAYER_PING_DATA;
spac << player.pid;
spac << player.ping;
SendToClients(spac);
}
break;
case NP_MSG_START_GAME:
{
packet >> player.current_game;
}
break;
case NP_MSG_STOP_GAME:
{
if (!m_is_running)
break;
m_is_running = false;
// tell clients to stop game
sf::Packet spac;
spac << (MessageId)NP_MSG_STOP_GAME;
std::lock_guard<std::recursive_mutex> lkp(m_crit.players);
SendToClients(spac);
}
break;
case NP_MSG_GAME_STATUS:
{
u32 status;
packet >> status;
m_players[player.pid].game_status = static_cast<PlayerGameStatus>(status);
// send msg to other clients
sf::Packet spac;
spac << static_cast<MessageId>(NP_MSG_GAME_STATUS);
spac << player.pid;
spac << status;
SendToClients(spac);
}
break;
case NP_MSG_IPL_STATUS:
{
bool status;
packet >> status;
m_players[player.pid].has_ipl_dump = status;
}
break;
case NP_MSG_TIMEBASE:
{
u64 timebase = Common::PacketReadU64(packet);
u32 frame;
packet >> frame;
if (m_desync_detected)
break;
std::vector<std::pair<PlayerId, u64>>& timebases = m_timebase_by_frame[frame];
timebases.emplace_back(player.pid, timebase);
if (timebases.size() >= m_players.size())
{
// we have all records for this frame
if (!std::all_of(timebases.begin(), timebases.end(), [&](std::pair<PlayerId, u64> pair) {
return pair.second == timebases[0].second;
}))
{
int pid_to_blame = -1;
for (auto pair : timebases)
{
if (std::all_of(timebases.begin(), timebases.end(), [&](std::pair<PlayerId, u64> other) {
return other.first == pair.first || other.second != pair.second;
}))
{
// we are the only outlier
pid_to_blame = pair.first;
break;
}
}
sf::Packet spac;
spac << (MessageId)NP_MSG_DESYNC_DETECTED;
spac << pid_to_blame;
spac << frame;
SendToClients(spac);
m_desync_detected = true;
}
m_timebase_by_frame.erase(frame);
}
}
break;
case NP_MSG_MD5_PROGRESS:
{
int progress;
packet >> progress;
sf::Packet spac;
spac << static_cast<MessageId>(NP_MSG_MD5_PROGRESS);
spac << player.pid;
spac << progress;
SendToClients(spac);
}
break;
case NP_MSG_MD5_RESULT:
{
std::string result;
packet >> result;
sf::Packet spac;
spac << static_cast<MessageId>(NP_MSG_MD5_RESULT);
spac << player.pid;
spac << result;
SendToClients(spac);
}
break;
case NP_MSG_MD5_ERROR:
{
std::string error;
packet >> error;
sf::Packet spac;
spac << static_cast<MessageId>(NP_MSG_MD5_ERROR);
spac << player.pid;
spac << error;
SendToClients(spac);
}
break;
case NP_MSG_SYNC_SAVE_DATA:
{
MessageId sub_id;
packet >> sub_id;
switch (sub_id)
{
case SYNC_SAVE_DATA_SUCCESS:
{
if (m_start_pending)
{
m_save_data_synced_players++;
if (m_save_data_synced_players >= m_players.size() - 1)
{
m_dialog->AppendChat(GetStringT("All players synchronized."));
StartGame();
}
}
}
break;
case SYNC_SAVE_DATA_FAILURE:
{
m_dialog->AppendChat(
StringFromFormat(GetStringT("%s failed to synchronize.").c_str(), player.name.c_str()));
m_dialog->OnSaveDataSyncFailure();
m_start_pending = false;
}
break;
default:
PanicAlertT(
"Unknown SYNC_SAVE_DATA message with id:%d received from player:%d Kicking player!",
sub_id, player.pid);
return 1;
}
}
break;
default:
PanicAlertT("Unknown message with id:%d received from player:%d Kicking player!", mid,
player.pid);
// unknown message, kick the client
return 1;
}
return 0;
}