Core/PacketIO: Handle ConnectToFailed and allow the client to reconnect up to 5 times before aborting login to world

Closes #14214

src/server/game/Server/WorldSession.cpp

@@ -48,6 +48,7 @@
 #include "WardenWin.h"
 #include "WardenMac.h"
 #include "BattlenetServerManager.h"
+#include "AuthenticationPackets.h"
 #include "CharacterPackets.h"
 #include "ClientConfigPackets.h"
 #include "MiscPackets.h"
@@ -183,8 +184,10 @@ std::string WorldSession::GetPlayerInfo() const
     std::ostringstream ss;
 
     ss << "[Player: " << GetPlayerName() << " (";
-    if (_player != NULL)
+    if (_player)
         ss << _player->GetGUID().ToString() << ", ";
+    else if (!m_playerLoading.IsEmpty())
+        ss << "Logging in: " << m_playerLoading.ToString() << ", ";
 
     ss << "Account: " << GetAccountId() << ")]";
 
@@ -704,6 +707,21 @@ void WorldSession::Handle_ServerSide(WorldPacket& recvPacket)
         , GetOpcodeNameForLogging(static_cast<OpcodeClient>(recvPacket.GetOpcode())).c_str(), GetPlayerInfo().c_str());
 }
 
+void WorldSession::SendConnectToInstance(WorldPackets::Auth::ConnectToSerial serial)
+{
+    boost::system::error_code ignored_error;
+    boost::asio::ip::tcp::endpoint instanceAddress = realm.GetAddressForClient(boost::asio::ip::address::from_string(GetRemoteAddress(), ignored_error));
+    instanceAddress.port(sWorld->getIntConfig(CONFIG_PORT_INSTANCE));
+
+    WorldPackets::Auth::ConnectTo connectTo;
+    connectTo.Key = MAKE_PAIR64(GetAccountId(), CONNECTION_TYPE_INSTANCE);
+    connectTo.Serial = serial;
+    connectTo.Payload.Where = instanceAddress;
+    connectTo.Con = CONNECTION_TYPE_INSTANCE;
+
+    SendPacket(connectTo.Write());
+}
+
 void WorldSession::LoadGlobalAccountData()
 {
     PreparedStatement* stmt = CharacterDatabase.GetPreparedStatement(CHAR_SEL_ACCOUNT_DATA);