bool PerformOp(Connection &con, string client, string file, vector<string> slaves) {
if (slaves.empty()) {
return false;
}
// Send message to master slave(first) to prepare for client operation
Message slave_prep(kSlavePrepareOp, SAFE_MESS);
slave_prep.SetContent(SlaveOp{file, client, "", slaves});
if (!con.SendMessage(slave_prep, slaves.front())) {
cout << "Failed to prepare slaves for operation." << endl;
return false;
}
// Wait slave to confirm operation and to inform the handler
bool confirmed = false;
string op_handler;
Message tmp(0,0);
if (con.GetMessage(kSlaveConfirmOp, kCreateTimeout, tmp)) {
SlaveOp cop;
tmp.GetContent(cop);
confirmed = cop.client == client && cop.file_name == file;
op_handler = tmp.sender();
}
// Slaves are not responding to prepare op
if (!confirmed) {
cout << "Storage slaves did not respond." << endl;
return false;
}
Message client_prep(kClientPrepareOp, SAFE_MESS);
client_prep.SetContent(ClientOp{file, op_handler});
if (!con.SendMessage(client_prep, client)) {
cout << "Failed to prepare client for operation." << endl;
return false;
}
// Wait slave to confirm operation and to inform the handler
confirmed = false;
if (con.GetMessage(kFileOpResult, kCreateTimeout, tmp)) {
ResultFileOp result;
tmp.GetContent(result);
confirmed = result.ok;
}
// Slave did not confirm
if (!confirmed) {
cout << "Storage slaves did not confirm operation." << endl;
}
return confirmed;
}
void DOTHeal::HandleGetLc(StringHash eventType, VariantMap& eventData)
{
Node* sceneNode = (Node*)(eventData[GetLc::P_NODE].GetPtr());
if (sceneNode == node_)
{
if (!targets_.Size())
{
return;
}
Connection* conn = (Connection*)(eventData[GetLc::P_CONNECTION].GetPtr());
lc_->GetLagTime(conn);
for (int x = 0; x < targets_.Size(); x++)
{
float timeRamp = targets_[x]->elapsedTime_ + lc_->lagTime_;
lc_->msg_.Clear();
lc_->msg_.WriteInt(lc_->clientID_);
lc_->msg_.WriteString("DOTHeal");
lc_->msg_.WriteInt(targets_[x]->clientID_);
lc_->msg_.WriteFloat(timeRamp);
conn->SendMessage(MSG_LCMSG, true, true, lc_->msg_);
}
}
}
void Server::HandleClientConnect(StringHash eventType, VariantMap& eventData)
{
//LOGERRORF("client connected to server");
using namespace NetworkMessage;
Connection* sender = static_cast<Connection*>(eventData[P_CONNECTION].GetPtr());
ClientData* newClient = new ClientData(clientIDCount_, sender, false);
//Synchronize client data.
for (int x = 0; x < clientData_.Size(); x++)
{
//Send the new client an old clients data
msg_.Clear();
msg_.WriteInt(clientData_[x]->clientID_);
msg_.WriteBool(false);
sender->SendMessage(MSG_NEWCLIENT, true, true, msg_);
//Send the old client the new clients data.
msg_.Clear();
msg_.WriteInt(clientIDCount_);
msg_.WriteBool(false);
clientData_[x]->connection_->SendMessage(MSG_NEWCLIENT, true, true, msg_);
}
//Send the new client its data.
clientData_.Push(newClient);
msg_.Clear();
msg_.WriteInt(clientIDCount_);
msg_.WriteBool(true);
sender->SendMessage(MSG_NEWCLIENT, true, true, msg_);
//Send the new client the gamemode to load.
msg_.Clear();
msg_.WriteString(gamemodeName_.CString());
sender->SendMessage(MSG_LOADGAMEMODE, true, true, msg_);
clientIDCount_++;
}
bool HandleCreate(const Message &msg, Connection &con) {
bool succeeded = false;
CreateFileOp op;
auto client = msg.sender();
try {
msg.GetContent(op);
cout << msg.sender() << " requested createop with args: " << op.file_name
<< " and " << op.redundancy << endl;
if (!gFileMap.LockFile(op.file_name)) {
cout << "Failed to lock entry. File was locked in the meantime." << endl;
goto finish;
}
// get slaves associated with the file
vector<string> slaves = GetFileSlaves(op.file_name);
if (!slaves.empty()) {
cout << "Create request failed. File does exist." << endl;
} else {
gSlavesLock.lock();
for (auto &entry : gSlaves) {
slaves.push_back(entry.first);
if (slaves.size() == op.redundancy) break;
}
gSlavesLock.unlock();
if (slaves.size() == op.redundancy) {
succeeded = PerformOp(con, client, op.file_name, slaves);
}
}
if (succeeded) {
// insert the file on slaves
gSlavesLock.lock();
for (auto & slave : gSlaves) {
if (find(begin(slaves), end(slaves), slave.first) != end(slaves)) {
slave.second.push_back(op.file_name);
}
}
gSlavesLock.unlock();
SortSlaves();
}
} catch (...) {
cout << "Invalid create request from " << msg.sender() << endl;
}
gFileMap.UnlockFile(op.file_name);
finish:
Message res_msg(kFileOpResult, SAFE_MESS);
ResultFileOp res{op.file_name, succeeded};
res_msg.SetContent(res);
if (!con.SendMessage(res_msg, client)) {
cout << "Failed to inform client of op result." << endl;
}
return succeeded;
}
bool HandleRemove(const Message &msg, Connection &con) {
bool succeeded = false;
bool locked = false;
RemoveFileOp op;
auto client = msg.sender();
vector<string> slaves;
try {
msg.GetContent(op);
cout << msg.sender() << " requested removeop with arg: " << op.file_name
<< endl;
if (!(locked = gFileMap.LockFile(op.file_name))) {
cout << "Failed to lock entry. File was locked in the meantime." << endl;
goto finish;
}
// get slaves associated with the file
slaves = GetFileSlaves(op.file_name);
if (slaves.empty()) {
cout << "Remove request failed. File does not exist." << endl;
} else {
succeeded = PerformOp(con, client, op.file_name, slaves);
}
if (succeeded) {
// erases the files from slaves
gSlavesLock.lock();
for (auto & slave : gSlaves) {
if (find(begin(slaves), end(slaves), slave.first) != end(slaves)) {
auto &files = slave.second;
files.erase(remove(begin(files), end(files), op.file_name), end(files));
}
}
gSlavesLock.unlock();
SortSlaves();
}
} catch (...) {
cout << "Invalid create request from " << msg.sender() << endl;
}
if (locked) {
gFileMap.UnlockFile(op.file_name);
}
finish:
Message res_msg(kFileOpResult, SAFE_MESS);
ResultFileOp res{op.file_name, succeeded};
res_msg.SetContent(res);
if (!con.SendMessage(res_msg, client)) {
cout << "Failed to inform client of op result." << endl;
}
return succeeded;
}
void Silence::HandleGetLc(StringHash eventType, VariantMap& eventData)
{
Node* clientNode = (Node*)(eventData[GetLc::P_NODE].GetPtr());
if (clientNode == node_)
{
Connection* conn = (Connection*)(eventData[GetLc::P_CONNECTION].GetPtr());
msg_.Clear();
msg_.WriteInt(clientID_);
msg_.WriteString("Silence");
msg_.WriteBool(silence_);
conn->SendMessage(MSG_LCMSG, true, true, msg_);
}
}
void Chat::HandleSend(StringHash eventType, VariantMap& eventData)
{
String text = textEdit_->GetText();
if (text.Empty())
return; // Do not send an empty message
Network* network = GetSubsystem<Network>();
Connection* serverConnection = network->GetServerConnection();
if (serverConnection)
{
// A VectorBuffer object is convenient for constructing a message to send
VectorBuffer msg;
msg.WriteString(text);
// Send the chat message as in-order and reliable
serverConnection->SendMessage(MSG_CHAT, true, true, msg);
// Empty the text edit after sending
textEdit_->SetText(String::EMPTY);
}
}
bool HandleRead(const Message &msg, Connection &con) {
bool succeeded = false;
bool locked = false;
ReadFileOp op;
auto client = msg.sender();
vector<string> slaves;
try {
msg.GetContent(op);
cout << msg.sender() << " requested readop with arg: " << op.file_name
<< endl;
if (!(locked = gFileMap.LockFile(op.file_name))) {
cout << "Failed to lock entry. File was locked in the meantime." << endl;
goto finish;
}
// get slaves associated with the file
slaves = GetFileSlaves(op.file_name);
if (slaves.empty()) {
cout << "Read request failed. File does not exist." << endl;
} else {
slaves.resize(1);
succeeded = PerformOp(con, client, op.file_name, slaves);
}
} catch (...) {
cout << "Invalid read request from " << msg.sender() << endl;
}
if (locked) {
gFileMap.UnlockFile(op.file_name);
}
finish:
Message res_msg(kFileOpResult, SAFE_MESS);
ResultFileOp res{op.file_name, succeeded};
res_msg.SetContent(res);
if (!con.SendMessage(res_msg, client)) {
cout << "Failed to inform client of op result." << endl;
}
return succeeded;
}
void GameEconomicServerClientConsole::SendMessage(String Message)
{
/// If sending message is empty
if (Message.Empty())
{
return; // Do not send an empty message
}
/// Get connection
Network* network = GetSubsystem<Network>();
Connection* serverConnection = network->GetServerConnection();
/// Send message only if serverconnection and connection is true
if (serverConnection&&serverconnection)
{
// A VectorBuffer object is convenient for constructing a message to send
VectorBuffer msg;
msg.WriteString(Message);
// Send the chat message as in-order and reliable
serverConnection->SendMessage(NetMessageAdminClientSend, true, true, msg);
}
return;
}
/** Accepts an outgoing message and sends it through the best
* connection it currently has. Note that this WILL NOT create a
* connection if one does not exist (for direct messages). Instead
* it will convert the message to be a routable message and send it
* on a random connection.
*
* \param msg The RAIN::Message object to be sent
*/
void RAIN::ConnectionPool::DispatchMessage(RAIN::Message *msg)
{
wxLogVerbose("ConnectionPool::DispatchMessage");
if (msg->status != MSG_STATUS_OUTGOING)
return;
BENC_SAFE_CAST(msg->headers["Destination"], msgdest, String);
BENC_SAFE_CAST(msg->headers["Event"], msgevent, String);
wxLogVerbose("ConnectionPool::DispatchMessage with msg for %s - %s", msgdest->getString().c_str(),
msgevent->getString().c_str());
if (msgdest->getString().Cmp("Broadcast") == 0)
{
this->app->router->ImportBroadcast(msg);
BEnc::Value *via = msg->headers["Via"];
BEnc::Dictionary *myval = NULL;
wxString myhash = globalCredentialManager->GetMyPeerID()->hash;
wxArrayString alreadyto;
// we flatten the via to a list of peers already sent-to
std::vector<BEnc::Value *> children;
children.push_back(via);
while (children.size() > 0)
{
BENC_SAFE_CAST(children.at(0), v, Dictionary);
children.erase(children.begin());
// via is always a dict of dicts
std::map<wxString, RAIN::BEnc::Value*, BEnc::Cmp>::iterator it = v->hash.begin();
while (it != v->hash.end())
{
BENC_SAFE_CAST(it->second, h, Dictionary);
alreadyto.Add(it->first);
if (RAIN::SafeStringsEq(it->first, myhash))
{
myval = h;
}
if (h->hash.size() > 0)
{
children.push_back(h);
}
it++;
}
}
if (myval == NULL)
{
/* this is an error, because it means we got a message
* without the sender modifying the message to indicate
* we were sent it */
wxLogVerbose("Warning: Message received without our hash in Via");
return;
}
std::vector <RAIN::Connection *> local_sendto;
int i = 0, n = 0;
wxLogVerbose("Rebroadcasting message already sent to %d peers", alreadyto.GetCount());
// TODO: optimise this search
/* now we search through our connected peers to determine if we can
* further distribute this message to peers who haven't yet seen it */
for (i = 0; i < this->pool.size(); i++)
{
if (!this->pool.at(i)->isConnected)
continue;
wxString fp_hash = this->pool.at(i)->pid->hash;
bool sendToThisPeer = true;
/* has this message been seen by this peer? */
for (n = 0; n < alreadyto.GetCount(); n++)
{
if (RAIN::SafeStringsEq(fp_hash, alreadyto[n]))
{
/* yes, so don't resend */
sendToThisPeer = false;
break;
}
}
if (sendToThisPeer)
{
local_sendto.push_back(this->pool.at(i));
}
}
if (local_sendto.size() == 0)
{
wxLogVerbose("we cannot further distribute this broadcast");
/* we have nothing to do */
return;
}
/* prepare the message */
for (i = 0; i < local_sendto.size(); i++)
{
RAIN::Connection *c = local_sendto.at(i);
/* myval is a pointer into msg's via hash at the node containing our hash */
myval->hash[c->pid->hash] = new BEnc::Dictionary();
}
/* now send it */
for (i = 0; i < local_sendto.size(); i++)
{
wxLogVerbose("dispatching to %d (%s)", i, local_sendto.at(i)->pid->address.c_str());
local_sendto.at(i)->SendMessage(msg);
}
} else if (msgdest->getString().Cmp("Peer") == 0) {
BENC_SAFE_CAST(msg->headers["To"], msgto, String);
if (!msgto)
return;
wxString to = msgto->getString();
wxLogVerbose(" peer routing - to %s - searching local connections", CryptoHelper::HashToHex(to, true).c_str());
for (int i = 0; i < this->pool.size(); i++)
{
if (this->pool.at(i) && this->pool.at(i)->isConnected)
{
if (RAIN::SafeStringsEq(this->pool.at(i)->pid->hash, to))
{
wxLogVerbose(" found connection");
this->pool.at(i)->SendMessage(msg);
return;
}
}
}
/* we're still here :(
* this implies we're not connected to the recipient of this message
* so we need to route it */
if (!msg->headers.count("Route-Preload"))
{
/* we need to consult our routing manager to see if we know
* of a route to this host */
RoutePath *rp;
if (rp = this->app->router->GetBestRoute(to))
{
rp->PreloadMessage(msg);
} else {
wxLogVerbose("Warning: route to %s unknown", CryptoHelper::HashToHex(to, true).c_str());
msgdest->str = "Broadcast";
this->DispatchMessage(msg);
return;
}
}
/* walk the route-preload looking for our hash */
wxString myHash = globalCredentialManager->GetMyPeerID()->hash;
wxString target = "";
BENC_SAFE_CAST(msg->headers["Route-Preload"], preload, List);
for (size_t i = 0; i < preload->getListSize(); i++)
{
BENC_SAFE_CAST(preload->getListItem(i), listitem, String);
if (RAIN::SafeStringsEq(listitem->getString(), myHash))
{
if (i + 1 == preload->getListSize())
{
/* our target is actually To because we're last in the routelist */
target = to;
} else {
BENC_SAFE_CAST(preload->getListItem(i + 1), nextlistitem, String);
target = nextlistitem->getString();
}
break;
}
}
if (target == "")
{
/* this should never happen - we got a message preloaded with a route
* not including us, or the message is to nowhere! */
return;
} else {
for (size_t i = 0; i < this->pool.size(); i++)
{
if (this->pool.at(i) && this->pool.at(i)->isConnected)
{
if (RAIN::SafeStringsEq(this->pool.at(i)->pid->hash, to))
{
if (msg->headers.count("Via"))
{
BENC_SAFE_CAST(msg->headers["Via"], msgvia, List);
msgvia->pushList(new BEnc::String(myHash));
} else {
BEnc::List *msgvia = new BEnc::List();
msgvia->pushList(new BEnc::String(myHash));
msg->headers["Via"] = msgvia;
}
this->pool.at(i)->SendMessage(msg);
return;
}
}
}
/* we got a message with an old/invalid route - default to broadcast */
msgdest->str = "Broadcast";
this->DispatchMessage(msg);
return;
}
} else if (msgdest->getString().Cmp("Random") == 0) {
if (!this->AnyConnections())
{
wxLogVerbose("Warning: Tried to send message to random peer with no connections - ignored");
return;
}
Connection *c = NULL;
while (c == NULL)
{
size_t i = (size_t) this->pool.size() * (float) rand() / (float) RAND_MAX;
wxLogVerbose("ConnectionPool: chose connection %d/%d for random dest", i, pool.size());
if (i < this->pool.size())
c = this->pool.at(i);
if (!c->isConnected)
c = NULL;
}
wxLogVerbose("Sending random message to connection %08x (%s)", c, c->pid->address.c_str());
msgdest->str = "Peer";
msg->headers["To"] = new BEnc::String(c->pid->hash);
c->SendMessage(msg);
}
}
void PvPGM::ServerHandleNetworkMessage(StringHash eventType, VariantMap& eventData)
{
using namespace NetworkMessage;
int msgID = eventData[P_MESSAGEID].GetInt();
Connection* sender = static_cast<Connection*>(eventData[P_CONNECTION].GetPtr());
if (msgID == MSG_GAMEMODELOADED)
{
ServerSynchronizeScene(sender);
}
else if (msgID == MSG_GAMEMODEMSG)
{
const PODVector<unsigned char>& data = eventData[P_DATA].GetBuffer();
MemoryBuffer msg(data);
int messageID = msg.ReadInt();
if (messageID == MSG_SCENELOADED_)
{
PlayerSB* player;
//Create player on server.
for (int x = 0; x < server_->clientData_.Size(); x++)
{
if (server_->clientData_[x]->connection_ == sender)
{
int index = Random( 0, spawnPoints_.Size() );
victoria_ = spawnPoints_[index]->GetPosition();
quarterOnion_ = spawnPoints_[index]->GetRotation();
player = NewPlayer(server_->clientData_[x], "Witch3", victoria_, quarterOnion_);//Witch3 is the default model.
break;
}
}
for (int x = 0; x < players_.Size(); x++)
{
//Send client the existing players.
msg_.Clear();
msg_.WriteInt(MSG_NEWPLAYER_);
msg_.WriteInt(players_[x]->clientData_->clientID_);
msg_.WriteString(players_[x]->modelFilename_);
msg_.WriteVector3(players_[x]->player_->GetPosition());
msg_.WriteQuaternion(players_[x]->player_->GetRotation());
sender->SendMessage(MSG_GAMEMODEMSG, true, true, msg_);
if (sender != players_[x]->clientData_->connection_)
{
((GameMechanic*)(players_[x]))->receiver_ = sender;
((GameMechanic*)(players_[x]))->clientID_ = players_[x]->clientData_->clientID_;
players_[x]->ServerSync();
//Send the existing players the client.
msg_.Clear();
msg_.WriteInt(MSG_NEWPLAYER_);
msg_.WriteInt(player->clientData_->clientID_);
msg_.WriteString(player->modelFilename_);
msg_.WriteVector3(player->player_->GetPosition());
msg_.WriteQuaternion(player->player_->GetRotation());
players_[x]->clientData_->connection_->SendMessage(MSG_GAMEMODEMSG, true, true, msg_);
}
}
}
else if (messageID == MSG_RequestMechanicExecute_)
{
for (int x = 0; x < players_.Size(); x++)
{
if (players_[x]->clientData_->connection_ == sender)
{
float lagTime = ServerGetSenderLagTime(sender);
lagTime += ServerGetSenderLagTime(sender);
((GameMechanic*)(players_[x]))->message_ = &msg;
((GameMechanic*)(players_[x]))->clientID_ = players_[x]->clientData_->clientID_;
((GameMechanic*)(players_[x]))->lagTime_ = lagTime;
players_[x]->RequestMechanicExecute();
break;
}
}
}
}
}
