Core/Misc: Cleanup worldserver/bnetserver main() functions to run destructors in predictable order

* world/bnet servers will now fail to startup if listen ports are in use
* Restored "Network.OutUBuff" config option lost during boost transition

8 files changed, 294 insertions, 199 deletions

diff --git a/src/server/bnetserver/Main.cpp b/src/server/bnetserver/Main.cpp
index ec6f11c92da..ccee80e058a 100644
--- a/src/server/bnetserver/Main.cpp
+++ b/src/server/bnetserver/Main.cpp
@@ -58,23 +58,16 @@ char serviceDescription[] = "TrinityCore Battle.net emulator authentication serv
 */
 int m_ServiceStatus = -1;
 
-static boost::asio::deadline_timer* _serviceStatusWatchTimer;
-void ServiceStatusWatcher(boost::system::error_code const& error);
+void ServiceStatusWatcher(std::weak_ptr<boost::asio::deadline_timer> serviceStatusWatchTimerRef, std::weak_ptr<boost::asio::io_service> ioServiceRef, boost::system::error_code const& error);
 #endif
 
 bool StartDB();
 void StopDB();
-void SignalHandler(boost::system::error_code const& error, int signalNumber);
-void KeepDatabaseAliveHandler(boost::system::error_code const& error);
-void BanExpiryHandler(boost::system::error_code const& error);
+void SignalHandler(std::weak_ptr<boost::asio::io_service> ioServiceRef, boost::system::error_code const& error, int signalNumber);
+void KeepDatabaseAliveHandler(std::weak_ptr<boost::asio::deadline_timer> dbPingTimerRef, int32 dbPingInterval, boost::system::error_code const& error);
+void BanExpiryHandler(std::weak_ptr<boost::asio::deadline_timer> banExpiryCheckTimerRef, int32 banExpiryCheckInterval, boost::system::error_code const& error);
 variables_map GetConsoleArguments(int argc, char** argv, fs::path& configFile, std::string& configService);
 
-static boost::asio::io_service* _ioService;
-static boost::asio::deadline_timer* _dbPingTimer;
-static uint32 _dbPingInterval;
-static boost::asio::deadline_timer* _banExpiryCheckTimer;
-static uint32 _banExpiryCheckInterval;
-
 int main(int argc, char** argv)
 {
     signal(SIGABRT, &Trinity::AbortHandler);
@@ -88,6 +81,8 @@ int main(int argc, char** argv)
 
     GOOGLE_PROTOBUF_VERIFY_VERSION;
 
+    std::shared_ptr<void> protobufHandle(nullptr, [](void*) { google::protobuf::ShutdownProtobufLibrary(); });
+
 #if TRINITY_PLATFORM == TRINITY_PLATFORM_WINDOWS
     if (configService.compare("install") == 0)
         return WinServiceInstall() ? 0 : 1;
@@ -150,86 +145,85 @@ int main(int argc, char** argv)
     if (!StartDB())
         return 1;
 
-    _ioService = new boost::asio::io_service();
+    std::shared_ptr<void> dbHandle(nullptr, [](void*) { StopDB(); });
+
+    std::shared_ptr<boost::asio::io_service> ioService = std::make_shared<boost::asio::io_service>();
 
     // Start the listening port (acceptor) for auth connections
     int32 bnport = sConfigMgr->GetIntDefault("BattlenetPort", 1119);
     if (bnport < 0 || bnport > 0xFFFF)
     {
         TC_LOG_ERROR("server.bnetserver", "Specified battle.net port (%d) out of allowed range (1-65535)", bnport);
-        StopDB();
-        delete _ioService;
         return 1;
     }
 
-    if (!sLoginService.Start(*_ioService))
+    if (!sLoginService.Start(*ioService))
     {
-        StopDB();
-        delete _ioService;
         TC_LOG_ERROR("server.bnetserver", "Failed to initialize login service");
         return 1;
     }
 
+    std::shared_ptr<void> sLoginServiceHandle(nullptr, [](void*) { sLoginService.Stop(); });
+
     // Get the list of realms for the server
-    sRealmList->Initialize(*_ioService, sConfigMgr->GetIntDefault("RealmsStateUpdateDelay", 10));
+    sRealmList->Initialize(*ioService, sConfigMgr->GetIntDefault("RealmsStateUpdateDelay", 10));
+
+    std::shared_ptr<void> sRealmListHandle(nullptr, [](void*) { sRealmList->Close(); });
 
     std::string bindIp = sConfigMgr->GetStringDefault("BindIP", "0.0.0.0");
 
-    sSessionMgr.StartNetwork(*_ioService, bindIp, bnport);
+    if (!sSessionMgr.StartNetwork(*ioService, bindIp, bnport))
+    {
+        TC_LOG_ERROR("server.bnetserver", "Failed to initialize network");
+        return 1;
+    }
+
+    std::shared_ptr<void> sSessionMgrHandle(nullptr, [](void*) { sSessionMgr.StopNetwork(); });
 
     // Set signal handlers
-    boost::asio::signal_set signals(*_ioService, SIGINT, SIGTERM);
+    boost::asio::signal_set signals(*ioService, SIGINT, SIGTERM);
 #if TRINITY_PLATFORM == TRINITY_PLATFORM_WINDOWS
     signals.add(SIGBREAK);
 #endif
-    signals.async_wait(SignalHandler);
+    signals.async_wait(std::bind(&SignalHandler, std::weak_ptr<boost::asio::io_service>(ioService), std::placeholders::_1, std::placeholders::_2));
 
     // Set process priority according to configuration settings
     SetProcessPriority("server.bnetserver");
 
     // Enabled a timed callback for handling the database keep alive ping
-    _dbPingInterval = sConfigMgr->GetIntDefault("MaxPingTime", 30);
-    _dbPingTimer = new boost::asio::deadline_timer(*_ioService);
-    _dbPingTimer->expires_from_now(boost::posix_time::minutes(_dbPingInterval));
-    _dbPingTimer->async_wait(KeepDatabaseAliveHandler);
+    int32 dbPingInterval = sConfigMgr->GetIntDefault("MaxPingTime", 30);
+    std::shared_ptr<boost::asio::deadline_timer> dbPingTimer = std::make_shared<boost::asio::deadline_timer>(*ioService);
+    dbPingTimer->expires_from_now(boost::posix_time::minutes(dbPingInterval));
+    dbPingTimer->async_wait(std::bind(&KeepDatabaseAliveHandler, std::weak_ptr<boost::asio::deadline_timer>(dbPingTimer), dbPingInterval, std::placeholders::_1));
 
-    _banExpiryCheckInterval = sConfigMgr->GetIntDefault("BanExpiryCheckInterval", 60);
-    _banExpiryCheckTimer = new boost::asio::deadline_timer(*_ioService);
-    _banExpiryCheckTimer->expires_from_now(boost::posix_time::seconds(_banExpiryCheckInterval));
-    _banExpiryCheckTimer->async_wait(BanExpiryHandler);
+    int32 banExpiryCheckInterval = sConfigMgr->GetIntDefault("BanExpiryCheckInterval", 60);
+    std::shared_ptr<boost::asio::deadline_timer> banExpiryCheckTimer = std::make_shared<boost::asio::deadline_timer>(*ioService);
+    banExpiryCheckTimer->expires_from_now(boost::posix_time::seconds(banExpiryCheckInterval));
+    banExpiryCheckTimer->async_wait(std::bind(&BanExpiryHandler, std::weak_ptr<boost::asio::deadline_timer>(banExpiryCheckTimer), banExpiryCheckInterval, std::placeholders::_1));
 
 #if TRINITY_PLATFORM == TRINITY_PLATFORM_WINDOWS
+    std::shared_ptr<boost::asio::deadline_timer> serviceStatusWatchTimer;
     if (m_ServiceStatus != -1)
     {
-        _serviceStatusWatchTimer = new boost::asio::deadline_timer(*_ioService);
-        _serviceStatusWatchTimer->expires_from_now(boost::posix_time::seconds(1));
-        _serviceStatusWatchTimer->async_wait(ServiceStatusWatcher);
+        serviceStatusWatchTimer = std::make_shared<boost::asio::deadline_timer>(*ioService);
+        serviceStatusWatchTimer->expires_from_now(boost::posix_time::seconds(1));
+        serviceStatusWatchTimer->async_wait(std::bind(&ServiceStatusWatcher,
+            std::weak_ptr<boost::asio::deadline_timer>(serviceStatusWatchTimer),
+            std::weak_ptr<boost::asio::io_service>(ioService),
+            std::placeholders::_1));
     }
 #endif
 
     // Start the io service worker loop
-    _ioService->run();
-
-    _banExpiryCheckTimer->cancel();
-    _dbPingTimer->cancel();
+    ioService->run();
 
-    sLoginService.Stop();
-
-    sSessionMgr.StopNetwork();
-
-    sRealmList->Close();
-
-    // Close the Database Pool and library
-    StopDB();
+    banExpiryCheckTimer->cancel();
+    dbPingTimer->cancel();
 
     TC_LOG_INFO("server.bnetserver", "Halting process...");
 
     signals.cancel();
 
-    delete _banExpiryCheckTimer;
-    delete _dbPingTimer;
-    delete _ioService;
-    google::protobuf::ShutdownProtobufLibrary();
     return 0;
 }
 
@@ -258,51 +252,60 @@ void StopDB()
     MySQL::Library_End();
 }
 
-void SignalHandler(boost::system::error_code const& error, int /*signalNumber*/)
+void SignalHandler(std::weak_ptr<boost::asio::io_service> ioServiceRef, boost::system::error_code const& error, int /*signalNumber*/)
 {
     if (!error)
-        _ioService->stop();
+        if (std::shared_ptr<boost::asio::io_service> ioService = ioServiceRef.lock())
+            ioService->stop();
 }
 
-void KeepDatabaseAliveHandler(boost::system::error_code const& error)
+void KeepDatabaseAliveHandler(std::weak_ptr<boost::asio::deadline_timer> dbPingTimerRef, int32 dbPingInterval, boost::system::error_code const& error)
 {
     if (!error)
     {
-        TC_LOG_INFO("server.bnetserver", "Ping MySQL to keep connection alive");
-        LoginDatabase.KeepAlive();
+        if (std::shared_ptr<boost::asio::deadline_timer> dbPingTimer = dbPingTimerRef.lock())
+        {
+            TC_LOG_INFO("server.bnetserver", "Ping MySQL to keep connection alive");
+            LoginDatabase.KeepAlive();
 
-        _dbPingTimer->expires_from_now(boost::posix_time::minutes(_dbPingInterval));
-        _dbPingTimer->async_wait(KeepDatabaseAliveHandler);
+            dbPingTimer->expires_from_now(boost::posix_time::minutes(dbPingInterval));
+            dbPingTimer->async_wait(std::bind(&KeepDatabaseAliveHandler, dbPingTimerRef, dbPingInterval, std::placeholders::_1));
+        }
     }
 }
 
-void BanExpiryHandler(boost::system::error_code const& error)
+void BanExpiryHandler(std::weak_ptr<boost::asio::deadline_timer> banExpiryCheckTimerRef, int32 banExpiryCheckInterval, boost::system::error_code const& error)
 {
     if (!error)
     {
-        LoginDatabase.Execute(LoginDatabase.GetPreparedStatement(LOGIN_DEL_EXPIRED_IP_BANS));
-        LoginDatabase.Execute(LoginDatabase.GetPreparedStatement(LOGIN_UPD_EXPIRED_ACCOUNT_BANS));
-        LoginDatabase.Execute(LoginDatabase.GetPreparedStatement(LOGIN_DEL_BNET_EXPIRED_ACCOUNT_BANNED));
+        if (std::shared_ptr<boost::asio::deadline_timer> banExpiryCheckTimer = banExpiryCheckTimerRef.lock())
+        {
+            LoginDatabase.Execute(LoginDatabase.GetPreparedStatement(LOGIN_DEL_EXPIRED_IP_BANS));
+            LoginDatabase.Execute(LoginDatabase.GetPreparedStatement(LOGIN_UPD_EXPIRED_ACCOUNT_BANS));
+            LoginDatabase.Execute(LoginDatabase.GetPreparedStatement(LOGIN_DEL_BNET_EXPIRED_ACCOUNT_BANNED));
 
-        _banExpiryCheckTimer->expires_from_now(boost::posix_time::seconds(_banExpiryCheckInterval));
-        _banExpiryCheckTimer->async_wait(BanExpiryHandler);
+            banExpiryCheckTimer->expires_from_now(boost::posix_time::seconds(banExpiryCheckInterval));
+            banExpiryCheckTimer->async_wait(std::bind(&BanExpiryHandler, banExpiryCheckTimerRef, banExpiryCheckInterval, std::placeholders::_1));
+        }
     }
 }
 
 #if TRINITY_PLATFORM == TRINITY_PLATFORM_WINDOWS
-void ServiceStatusWatcher(boost::system::error_code const& error)
+void ServiceStatusWatcher(std::weak_ptr<boost::asio::deadline_timer> serviceStatusWatchTimerRef, std::weak_ptr<boost::asio::io_service> ioServiceRef, boost::system::error_code const& error)
 {
     if (!error)
     {
-        if (m_ServiceStatus == 0)
-        {
-            _ioService->stop();
-            delete _serviceStatusWatchTimer;
-        }
-        else
+        if (std::shared_ptr<boost::asio::io_service> ioService = ioServiceRef.lock())
         {
-            _serviceStatusWatchTimer->expires_from_now(boost::posix_time::seconds(1));
-            _serviceStatusWatchTimer->async_wait(ServiceStatusWatcher);
+            if (m_ServiceStatus == 0)
+            {
+                ioService->stop();
+            }
+            else if (std::shared_ptr<boost::asio::deadline_timer> serviceStatusWatchTimer = serviceStatusWatchTimerRef.lock())
+            {
+                serviceStatusWatchTimer->expires_from_now(boost::posix_time::seconds(1));
+                serviceStatusWatchTimer->async_wait(std::bind(&ServiceStatusWatcher, serviceStatusWatchTimerRef, ioService, std::placeholders::_1));
+            }
         }
     }
 }
diff --git a/src/server/game/Server/WorldSocket.cpp b/src/server/game/Server/WorldSocket.cpp
index bd5b84f24e3..8069220d270 100644
--- a/src/server/game/Server/WorldSocket.cpp
+++ b/src/server/game/Server/WorldSocket.cpp
@@ -202,7 +202,7 @@ void WorldSocket::InitializeHandler(boost::system::error_code error, std::size_t
 bool WorldSocket::Update()
 {
     EncryptablePacket* queued;
-    MessageBuffer buffer;
+    MessageBuffer buffer(_sendBufferSize);
     while (_bufferQueue.Dequeue(queued))
     {
         uint32 packetSize = queued->size();
@@ -212,7 +212,7 @@ bool WorldSocket::Update()
         if (buffer.GetRemainingSpace() < packetSize + SizeOfServerHeader)
         {
             QueuePacket(std::move(buffer));
-            buffer.Resize(4096);
+            buffer.Resize(_sendBufferSize);
         }
 
         if (buffer.GetRemainingSpace() >= packetSize + SizeOfServerHeader)
diff --git a/src/server/game/Server/WorldSocket.h b/src/server/game/Server/WorldSocket.h
index 14ce250d622..337ef055e2a 100644
--- a/src/server/game/Server/WorldSocket.h
+++ b/src/server/game/Server/WorldSocket.h
@@ -87,6 +87,7 @@ public:
 
     void SendAuthResponseError(uint32 code);
     void SetWorldSession(WorldSession* session);
+    void SetSendBufferSize(std::size_t sendBufferSize) { _sendBufferSize = sendBufferSize; }
 
 protected:
     void OnClose() override;
@@ -142,6 +143,7 @@ private:
     MessageBuffer _headerBuffer;
     MessageBuffer _packetBuffer;
     MPSCQueue<EncryptablePacket> _bufferQueue;
+    std::size_t _sendBufferSize;
 
     z_stream_s* _compressionStream;
 
diff --git a/src/server/game/Server/WorldSocketMgr.cpp b/src/server/game/Server/WorldSocketMgr.cpp
index 389df8619a1..42f34245adc 100644
--- a/src/server/game/Server/WorldSocketMgr.cpp
+++ b/src/server/game/Server/WorldSocketMgr.cpp
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2008-2017 TrinityCore <http://www.trinitycore.org/>
- * Copyright (C) 2005-2008  MaNGOS <http://getmangos.com/>
+ * Copyright (C) 2005-2008 MaNGOS <http://getmangos.com/>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -34,6 +34,7 @@ class WorldSocketThread : public NetworkThread<WorldSocket>
 public:
     void SocketAdded(std::shared_ptr<WorldSocket> sock) override
     {
+        sock->SetSendBufferSize(sWorldSocketMgr.GetApplicationSendBufferSize());
         sScriptMgr->OnSocketOpen(sock);
     }
 
@@ -43,7 +44,7 @@ public:
     }
 };
 
-WorldSocketMgr::WorldSocketMgr() : BaseSocketMgr(), _instanceAcceptor(nullptr), _socketSendBufferSize(-1), m_SockOutUBuff(65536), _tcpNoDelay(true)
+WorldSocketMgr::WorldSocketMgr() : BaseSocketMgr(), _instanceAcceptor(nullptr), _socketSystemSendBufferSize(-1), _socketApplicationSendBufferSize(65536), _tcpNoDelay(true)
 {
 }
 
@@ -66,18 +67,37 @@ bool WorldSocketMgr::StartNetwork(boost::asio::io_service& service, std::string
     TC_LOG_DEBUG("misc", "Max allowed socket connections %d", max_connections);
 
     // -1 means use default
-    _socketSendBufferSize = sConfigMgr->GetIntDefault("Network.OutKBuff", -1);
+    _socketSystemSendBufferSize = sConfigMgr->GetIntDefault("Network.OutKBuff", -1);
 
-    m_SockOutUBuff = sConfigMgr->GetIntDefault("Network.OutUBuff", 65536);
+    _socketApplicationSendBufferSize = sConfigMgr->GetIntDefault("Network.OutUBuff", 65536);
 
-    if (m_SockOutUBuff <= 0)
+    if (_socketApplicationSendBufferSize <= 0)
     {
         TC_LOG_ERROR("misc", "Network.OutUBuff is wrong in your config file");
         return false;
     }
 
-    BaseSocketMgr::StartNetwork(service, bindIp, port, threadCount);
-    _instanceAcceptor = new AsyncAcceptor(service, bindIp, uint16(sWorld->getIntConfig(CONFIG_PORT_INSTANCE)));
+    if (!BaseSocketMgr::StartNetwork(service, bindIp, port, threadCount))
+        return false;
+
+    AsyncAcceptor* instanceAcceptor = nullptr;
+    try
+    {
+        instanceAcceptor = new AsyncAcceptor(service, bindIp, uint16(sWorld->getIntConfig(CONFIG_PORT_INSTANCE)));
+    }
+    catch (boost::system::system_error const& err)
+    {
+        TC_LOG_ERROR("network", "Exception caught in WorldSocketMgr::StartNetwork (%s:%u): %s", bindIp.c_str(), port, err.what());
+        return false;
+    }
+
+    if (!instanceAcceptor->Bind())
+    {
+        TC_LOG_ERROR("network", "StartNetwork failed to bind instance socket acceptor");
+        return false;
+    }
+
+    _instanceAcceptor = instanceAcceptor;
 
     _acceptor->SetSocketFactory(std::bind(&BaseSocketMgr::GetSocketForAccept, this));
     _instanceAcceptor->SetSocketFactory(std::bind(&BaseSocketMgr::GetSocketForAccept, this));
@@ -91,7 +111,9 @@ bool WorldSocketMgr::StartNetwork(boost::asio::io_service& service, std::string
 
 void WorldSocketMgr::StopNetwork()
 {
-    _instanceAcceptor->Close();
+    if (_instanceAcceptor)
+        _instanceAcceptor->Close();
+
     BaseSocketMgr::StopNetwork();
 
     delete _instanceAcceptor;
@@ -103,10 +125,10 @@ void WorldSocketMgr::StopNetwork()
 void WorldSocketMgr::OnSocketOpen(tcp::socket&& sock, uint32 threadIndex)
 {
     // set some options here
-    if (_socketSendBufferSize >= 0)
+    if (_socketSystemSendBufferSize >= 0)
     {
         boost::system::error_code err;
-        sock.set_option(boost::asio::socket_base::send_buffer_size(_socketSendBufferSize), err);
+        sock.set_option(boost::asio::socket_base::send_buffer_size(_socketSystemSendBufferSize), err);
         if (err && err != boost::system::errc::not_supported)
         {
             TC_LOG_ERROR("misc", "WorldSocketMgr::OnSocketOpen sock.set_option(boost::asio::socket_base::send_buffer_size) err = %s", err.message().c_str());
diff --git a/src/server/game/Server/WorldSocketMgr.h b/src/server/game/Server/WorldSocketMgr.h
index 6c6933f156b..3540d8778c1 100644
--- a/src/server/game/Server/WorldSocketMgr.h
+++ b/src/server/game/Server/WorldSocketMgr.h
@@ -47,6 +47,8 @@ public:
 
     void OnSocketOpen(tcp::socket&& sock, uint32 threadIndex) override;
 
+    std::size_t GetApplicationSendBufferSize() const { return _socketApplicationSendBufferSize; }
+
 protected:
     WorldSocketMgr();
 
@@ -54,8 +56,8 @@ protected:
 
 private:
     AsyncAcceptor* _instanceAcceptor;
-    int32 _socketSendBufferSize;
-    int32 m_SockOutUBuff;
+    int32 _socketSystemSendBufferSize;
+    int32 _socketApplicationSendBufferSize;
     bool _tcpNoDelay;
 };
 
diff --git a/src/server/shared/Networking/AsyncAcceptor.h b/src/server/shared/Networking/AsyncAcceptor.h
index 8a73e6e59fc..8f598c177d2 100644
--- a/src/server/shared/Networking/AsyncAcceptor.h
+++ b/src/server/shared/Networking/AsyncAcceptor.h
@@ -31,7 +31,7 @@ public:
     typedef void(*AcceptCallback)(tcp::socket&& newSocket, uint32 threadIndex);
 
     AsyncAcceptor(boost::asio::io_service& ioService, std::string const& bindIp, uint16 port) :
-        _acceptor(ioService, tcp::endpoint(boost::asio::ip::address::from_string(bindIp), port)),
+        _acceptor(ioService), _endpoint(boost::asio::ip::address::from_string(bindIp), port),
         _socket(ioService), _closed(false), _socketFactory(std::bind(&AsyncAcceptor::DefeaultSocketFactory, this))
     {
     }
@@ -66,6 +66,33 @@ public:
         });
     }
 
+    bool Bind()
+    {
+        boost::system::error_code errorCode;
+        _acceptor.open(_endpoint.protocol(), errorCode);
+        if (errorCode)
+        {
+            TC_LOG_INFO("network", "Failed to open acceptor %s", errorCode.message().c_str());
+            return false;
+        }
+
+        _acceptor.bind(_endpoint, errorCode);
+        if (errorCode)
+        {
+            TC_LOG_INFO("network", "Couldn't bind to %s:%u %s", _endpoint.address().to_string(), _endpoint.port(), errorCode.message().c_str());
+            return false;
+        }
+
+        _acceptor.listen(boost::asio::socket_base::max_connections, errorCode);
+        if (errorCode)
+        {
+            TC_LOG_INFO("network", "Failed to start listening on %s:%u %s", _endpoint.address().to_string(), _endpoint.port(), errorCode.message().c_str());
+            return false;
+        }
+
+        return true;
+    }
+
     void Close()
     {
         if (_closed.exchange(true))
@@ -81,6 +108,7 @@ private:
     std::pair<tcp::socket*, uint32> DefeaultSocketFactory() { return std::make_pair(&_socket, 0); }
 
     tcp::acceptor _acceptor;
+    tcp::endpoint _endpoint;
     tcp::socket _socket;
     std::atomic<bool> _closed;
     std::function<std::pair<tcp::socket*, uint32>()> _socketFactory;
diff --git a/src/server/shared/Networking/SocketMgr.h b/src/server/shared/Networking/SocketMgr.h
index cb836c86db8..523f6794e68 100644
--- a/src/server/shared/Networking/SocketMgr.h
+++ b/src/server/shared/Networking/SocketMgr.h
@@ -39,9 +39,10 @@ public:
     {
         ASSERT(threadCount > 0);
 
+        AsyncAcceptor* acceptor = nullptr;
         try
         {
-            _acceptor = new AsyncAcceptor(service, bindIp, port);
+            acceptor = new AsyncAcceptor(service, bindIp, port);
         }
         catch (boost::system::system_error const& err)
         {
@@ -49,6 +50,13 @@ public:
             return false;
         }
 
+        if (!acceptor->Bind())
+        {
+            TC_LOG_ERROR("network", "StartNetwork failed to bind socket acceptor");
+            return false;
+        }
+
+        _acceptor = acceptor;
         _threadCount = threadCount;
         _threads = CreateThreads();
 
@@ -119,7 +127,7 @@ public:
     }
 
 protected:
-    SocketMgr() : _acceptor(nullptr), _threads(nullptr), _threadCount(1)
+    SocketMgr() : _acceptor(nullptr), _threads(nullptr), _threadCount(0)
     {
     }
 
diff --git a/src/server/worldserver/Main.cpp b/src/server/worldserver/Main.cpp
index 1ac22b5c81f..2136b5f7654 100644
--- a/src/server/worldserver/Main.cpp
+++ b/src/server/worldserver/Main.cpp
@@ -78,22 +78,35 @@ char serviceDescription[] = "TrinityCore World of Warcraft emulator world servic
 int m_ServiceStatus = -1;
 #endif
 
-boost::asio::io_service _ioService;
-boost::asio::deadline_timer _freezeCheckTimer(_ioService);
-uint32 _worldLoopCounter(0);
-uint32 _lastChangeMsTime(0);
-uint32 _maxCoreStuckTimeInMs(0);
-
-void SignalHandler(const boost::system::error_code& error, int signalNumber);
-void FreezeDetectorHandler(const boost::system::error_code& error);
+class FreezeDetector
+{
+public:
+    FreezeDetector(boost::asio::io_service& ioService, uint32 maxCoreStuckTime)
+        : _timer(ioService), _worldLoopCounter(0), _lastChangeMsTime(0), _maxCoreStuckTimeInMs(maxCoreStuckTime) { }
+
+    static void Start(std::shared_ptr<FreezeDetector> const& freezeDetector)
+    {
+        freezeDetector->_timer.expires_from_now(boost::posix_time::seconds(5));
+        freezeDetector->_timer.async_wait(std::bind(&FreezeDetector::Handler, std::weak_ptr<FreezeDetector>(freezeDetector), std::placeholders::_1));
+    }
+
+    static void Handler(std::weak_ptr<FreezeDetector> freezeDetectorRef, boost::system::error_code const& error);
+
+private:
+    boost::asio::deadline_timer _timer;
+    uint32 _worldLoopCounter;
+    uint32 _lastChangeMsTime;
+    uint32 _maxCoreStuckTimeInMs;
+};
+
+void SignalHandler(boost::system::error_code const& error, int signalNumber);
 AsyncAcceptor* StartRaSocketAcceptor(boost::asio::io_service& ioService);
 bool StartDB();
 void StopDB();
 void WorldUpdateLoop();
 void ClearOnlineAccounts();
 void ShutdownCLIThread(std::thread* cliThread);
-void ShutdownThreadPool(std::vector<std::thread>& threadPool);
-bool LoadRealmInfo();
+bool LoadRealmInfo(boost::asio::io_service& ioService);
 variables_map GetConsoleArguments(int argc, char** argv, fs::path& configFile, std::string& cfg_service);
 
 /// Launch the Trinity server
@@ -111,6 +124,8 @@ extern int main(int argc, char** argv)
 
     GOOGLE_PROTOBUF_VERIFY_VERSION;
 
+    std::shared_ptr<void> protobufHandle(nullptr, [](void*) { google::protobuf::ShutdownProtobufLibrary(); });
+
 #ifdef _WIN32
     if (configService.compare("install") == 0)
         return WinServiceInstall() ? 0 : 1;
@@ -129,9 +144,11 @@ extern int main(int argc, char** argv)
         return 1;
     }
 
+    std::shared_ptr<boost::asio::io_service> ioService = std::make_shared<boost::asio::io_service>();
+
     sLog->RegisterAppender<AppenderDB>();
     // If logs are supposed to be handled async then we need to pass the io_service into the Log singleton
-    sLog->Initialize(sConfigMgr->GetBoolDefault("Log.Async.Enable", false) ? &_ioService : nullptr);
+    sLog->Initialize(sConfigMgr->GetBoolDefault("Log.Async.Enable", false) ? ioService.get() : nullptr);
 
     Trinity::Banner::Show("worldserver-daemon",
         [](char const* text)
@@ -148,6 +165,8 @@ extern int main(int argc, char** argv)
 
     OpenSSLCrypto::threadsSetup();
 
+    std::shared_ptr<void> opensslHandle(nullptr, [](void*) { OpenSSLCrypto::threadsCleanup(); });
+
     // Seed the OpenSSL's PRNG here.
     // That way it won't auto-seed when calling BigNumber::SetRand and slow down the first world login
     BigNumber seed;
@@ -167,7 +186,7 @@ extern int main(int argc, char** argv)
     }
 
     // Set signal handlers (this must be done before starting io_service threads, because otherwise they would unblock and exit)
-    boost::asio::signal_set signals(_ioService, SIGINT, SIGTERM);
+    boost::asio::signal_set signals(*ioService, SIGINT, SIGTERM);
 #if TRINITY_PLATFORM == TRINITY_PLATFORM_WINDOWS
     signals.add(SIGBREAK);
 #endif
@@ -175,63 +194,87 @@ extern int main(int argc, char** argv)
 
     // Start the Boost based thread pool
     int numThreads = sConfigMgr->GetIntDefault("ThreadPool", 1);
-    std::vector<std::thread> threadPool;
+    std::shared_ptr<std::vector<std::thread>> threadPool(new std::vector<std::thread>(), [ioService](std::vector<std::thread>* del)
+    {
+        ioService->stop();
+        for (std::thread& thr : *del)
+            thr.join();
+
+        delete del;
+    });
 
     if (numThreads < 1)
         numThreads = 1;
 
     for (int i = 0; i < numThreads; ++i)
-        threadPool.push_back(std::thread(boost::bind(&boost::asio::io_service::run, &_ioService)));
+        threadPool->push_back(std::thread([ioService]() { ioService->run(); }));
 
     // Set process priority according to configuration settings
     SetProcessPriority("server.worldserver");
 
     // Start the databases
     if (!StartDB())
-    {
-        ShutdownThreadPool(threadPool);
         return 1;
-    }
+
+    std::shared_ptr<void> dbHandle(nullptr, [](void*) { StopDB(); });
 
     // Set server offline (not connectable)
     LoginDatabase.DirectPExecute("UPDATE realmlist SET flag = flag | %u WHERE id = '%d'", REALM_FLAG_OFFLINE, realm.Id.Realm);
 
-    sRealmList->Initialize(_ioService, sConfigMgr->GetIntDefault("RealmsStateUpdateDelay", 10));
+    sRealmList->Initialize(*ioService, sConfigMgr->GetIntDefault("RealmsStateUpdateDelay", 10));
+
+    std::shared_ptr<void> sRealmListHandle(nullptr, [](void*) { sRealmList->Close(); });
 
-    LoadRealmInfo();
+    LoadRealmInfo(*ioService);
 
-    sMetric->Initialize(realm.Name, _ioService, []()
+    sMetric->Initialize(realm.Name, *ioService, []()
     {
         TC_METRIC_VALUE("online_players", sWorld->GetPlayerCount());
     });
 
     TC_METRIC_EVENT("events", "Worldserver started", "");
 
-    // Initialize the World
+    std::shared_ptr<void> sMetricHandle(nullptr, [](void*)
+    {
+        TC_METRIC_EVENT("events", "Worldserver shutdown", "");
+        sMetric->ForceSend();
+    });
+
     sScriptMgr->SetScriptLoader(AddScripts);
+    std::shared_ptr<void> sScriptMgrHandle(nullptr, [](void*)
+    {
+        sScriptMgr->Unload();
+        sScriptReloadMgr->Unload();
+    });
+
+    // Initialize the World
     sWorld->SetInitialWorldSettings();
 
-    // Launch CliRunnable thread
-    std::thread* cliThread = nullptr;
-#ifdef _WIN32
-    if (sConfigMgr->GetBoolDefault("Console.Enable", true) && (m_ServiceStatus == -1)/* need disable console in service mode*/)
-#else
-    if (sConfigMgr->GetBoolDefault("Console.Enable", true))
-#endif
+    std::shared_ptr<void> mapManagementHandle(nullptr, [](void*)
     {
-        cliThread = new std::thread(CliThread);
-    }
+        // unload battleground templates before different singletons destroyed
+        sBattlegroundMgr->DeleteAllBattlegrounds();
+
+        sInstanceSaveMgr->Unload();
+        sOutdoorPvPMgr->Die();                    // unload it before MapManager
+        sMapMgr->UnloadAll();                     // unload all grids (including locked in memory)
+    });
 
     // Start the Remote Access port (acceptor) if enabled
-    AsyncAcceptor* raAcceptor = nullptr;
+    std::unique_ptr<AsyncAcceptor> raAcceptor;
     if (sConfigMgr->GetBoolDefault("Ra.Enable", false))
-        raAcceptor = StartRaSocketAcceptor(_ioService);
+        raAcceptor.reset(StartRaSocketAcceptor(*ioService));
 
     // Start soap serving thread if enabled
-    std::thread* soapThread = nullptr;
+    std::shared_ptr<std::thread> soapThread;
     if (sConfigMgr->GetBoolDefault("SOAP.Enabled", false))
     {
-        soapThread = new std::thread(TCSoapThread, sConfigMgr->GetStringDefault("SOAP.IP", "127.0.0.1"), uint16(sConfigMgr->GetIntDefault("SOAP.Port", 7878)));
+        soapThread.reset(new std::thread(TCSoapThread, sConfigMgr->GetStringDefault("SOAP.IP", "127.0.0.1"), uint16(sConfigMgr->GetIntDefault("SOAP.Port", 7878))),
+            [](std::thread* thr)
+        {
+            thr->join();
+            delete thr;
+        });
     }
 
     // Launch the worldserver listener socket
@@ -243,10 +286,36 @@ extern int main(int argc, char** argv)
     if (networkThreads <= 0)
     {
         TC_LOG_ERROR("server.worldserver", "Network.Threads must be greater than 0");
-        return false;
+        return 1;
+    }
+
+    if (!sWorldSocketMgr.StartNetwork(*ioService, worldListener, worldPort, networkThreads))
+    {
+        TC_LOG_ERROR("server.worldserver", "Failed to initialize network");
+        return 1;
     }
 
-    sWorldSocketMgr.StartNetwork(_ioService, worldListener, worldPort, networkThreads);
+    std::shared_ptr<void> sWorldSocketMgrHandle(nullptr, [](void*)
+    {
+        sWorld->KickAll();                                       // save and kick all players
+        sWorld->UpdateSessions(1);                             // real players unload required UpdateSessions call
+
+        sWorldSocketMgr.StopNetwork();
+
+        ///- Clean database before leaving
+        ClearOnlineAccounts();
+    });
+
+    // Launch CliRunnable thread
+    std::shared_ptr<std::thread> cliThread;
+#ifdef _WIN32
+    if (sConfigMgr->GetBoolDefault("Console.Enable", true) && (m_ServiceStatus == -1)/* need disable console in service mode*/)
+#else
+    if (sConfigMgr->GetBoolDefault("Console.Enable", true))
+#endif
+    {
+        cliThread.reset(new std::thread(CliThread), &ShutdownCLIThread);
+    }
 
     // Set server online (allow connecting now)
     LoginDatabase.DirectPExecute("UPDATE realmlist SET flag = flag & ~%u, population = 0 WHERE id = '%u'", REALM_FLAG_OFFLINE, realm.Id.Realm);
@@ -254,11 +323,11 @@ extern int main(int argc, char** argv)
     realm.Flags = RealmFlags(realm.Flags & ~uint32(REALM_FLAG_OFFLINE));
 
     // Start the freeze check callback cycle in 5 seconds (cycle itself is 1 sec)
+    std::shared_ptr<FreezeDetector> freezeDetector;
     if (int coreStuckTime = sConfigMgr->GetIntDefault("MaxCoreStuckTime", 0))
     {
-        _maxCoreStuckTimeInMs = coreStuckTime * 1000;
-        _freezeCheckTimer.expires_from_now(boost::posix_time::seconds(5));
-        _freezeCheckTimer.async_wait(FreezeDetectorHandler);
+        freezeDetector = std::make_shared<FreezeDetector>(*ioService, coreStuckTime * 1000);
+        freezeDetector->Start(freezeDetector);
         TC_LOG_INFO("server.worldserver", "Starting up anti-freeze thread (%u seconds max stuck time)...", coreStuckTime);
     }
 
@@ -269,55 +338,17 @@ extern int main(int argc, char** argv)
     WorldUpdateLoop();
 
     // Shutdown starts here
-    ShutdownThreadPool(threadPool);
+    threadPool.reset();
 
     sLog->SetSynchronous();
 
     sScriptMgr->OnShutdown();
 
-    sWorld->KickAll();                                       // save and kick all players
-    sWorld->UpdateSessions(1);                             // real players unload required UpdateSessions call
-
-    // unload battleground templates before different singletons destroyed
-    sBattlegroundMgr->DeleteAllBattlegrounds();
-
-    sWorldSocketMgr.StopNetwork();
-
-    sInstanceSaveMgr->Unload();
-    sOutdoorPvPMgr->Die();                    // unload it before MapManager
-    sMapMgr->UnloadAll();                     // unload all grids (including locked in memory)
-    sScriptMgr->Unload();
-    sScriptReloadMgr->Unload();
-
     // set server offline
     LoginDatabase.DirectPExecute("UPDATE realmlist SET flag = flag | %u WHERE id = '%d'", REALM_FLAG_OFFLINE, realm.Id.Realm);
-    sRealmList->Close();
-
-    // Clean up threads if any
-    if (soapThread != nullptr)
-    {
-        soapThread->join();
-        delete soapThread;
-    }
-
-    delete raAcceptor;
-
-    ///- Clean database before leaving
-    ClearOnlineAccounts();
-
-    StopDB();
-
-    TC_METRIC_EVENT("events", "Worldserver shutdown", "");
-    sMetric->ForceSend();
 
     TC_LOG_INFO("server.worldserver", "Halting process...");
 
-    ShutdownCLIThread(cliThread);
-
-    OpenSSLCrypto::threadsCleanup();
-
-    google::protobuf::ShutdownProtobufLibrary();
-
     // 0 - normal shutdown
     // 1 - shutdown at error
     // 2 - restart command used, this code can be used by restarter for restart Trinityd
@@ -342,9 +373,10 @@ void ShutdownCLIThread(std::thread* cliThread)
             if (!formatReturnCode)
                 errorBuffer = "Unknown error";
 
-            TC_LOG_DEBUG("server.worldserver", "Error cancelling I/O of CliThread, error code %u, detail: %s",
-                uint32(errorCode), errorBuffer);
-            LocalFree(errorBuffer);
+            TC_LOG_DEBUG("server.worldserver", "Error cancelling I/O of CliThread, error code %u, detail: %s", uint32(errorCode), errorBuffer);
+
+            if (!formatReturnCode)
+                LocalFree(errorBuffer);
 
             // send keyboard input to safely unblock the CLI thread
             INPUT_RECORD b[4];
@@ -385,18 +417,6 @@ void ShutdownCLIThread(std::thread* cliThread)
     }
 }
 
-void ShutdownThreadPool(std::vector<std::thread>& threadPool)
-{
-    sScriptMgr->OnNetworkStop();
-
-    _ioService.stop();
-
-    for (auto& thread : threadPool)
-    {
-        thread.join();
-    }
-}
-
 void WorldUpdateLoop()
 {
     uint32 realCurrTime = 0;
@@ -438,33 +458,36 @@ void WorldUpdateLoop()
     }
 }
 
-void SignalHandler(const boost::system::error_code& error, int /*signalNumber*/)
+void SignalHandler(boost::system::error_code const& error, int /*signalNumber*/)
 {
     if (!error)
         World::StopNow(SHUTDOWN_EXIT_CODE);
 }
 
-void FreezeDetectorHandler(const boost::system::error_code& error)
+void FreezeDetector::Handler(std::weak_ptr<FreezeDetector> freezeDetectorRef, boost::system::error_code const& error)
 {
     if (!error)
     {
-        uint32 curtime = getMSTime();
-
-        uint32 worldLoopCounter = World::m_worldLoopCounter;
-        if (_worldLoopCounter != worldLoopCounter)
-        {
-            _lastChangeMsTime = curtime;
-            _worldLoopCounter = worldLoopCounter;
-        }
-        // possible freeze
-        else if (getMSTimeDiff(_lastChangeMsTime, curtime) > _maxCoreStuckTimeInMs)
+        if (std::shared_ptr<FreezeDetector> freezeDetector = freezeDetectorRef.lock())
         {
-            TC_LOG_ERROR("server.worldserver", "World Thread hangs, kicking out server!");
-            ABORT();
+            uint32 curtime = getMSTime();
+
+            uint32 worldLoopCounter = World::m_worldLoopCounter;
+            if (freezeDetector->_worldLoopCounter != worldLoopCounter)
+            {
+                freezeDetector->_lastChangeMsTime = curtime;
+                freezeDetector->_worldLoopCounter = worldLoopCounter;
+            }
+            // possible freeze
+            else if (getMSTimeDiff(freezeDetector->_lastChangeMsTime, curtime) > freezeDetector->_maxCoreStuckTimeInMs)
+            {
+                TC_LOG_ERROR("server.worldserver", "World Thread hangs, kicking out server!");
+                ABORT();
+            }
+
+            freezeDetector->_timer.expires_from_now(boost::posix_time::seconds(1));
+            freezeDetector->_timer.async_wait(std::bind(&FreezeDetector::Handler, freezeDetectorRef, std::placeholders::_1));
         }
-
-        _freezeCheckTimer.expires_from_now(boost::posix_time::seconds(1));
-        _freezeCheckTimer.async_wait(FreezeDetectorHandler);
     }
 }
 
@@ -474,13 +497,20 @@ AsyncAcceptor* StartRaSocketAcceptor(boost::asio::io_service& ioService)
     std::string raListener = sConfigMgr->GetStringDefault("Ra.IP", "0.0.0.0");
 
     AsyncAcceptor* acceptor = new AsyncAcceptor(ioService, raListener, raPort);
+    if (!acceptor->Bind())
+    {
+        TC_LOG_ERROR("server.worldserver", "Failed to bind RA socket acceptor");
+        delete acceptor;
+        return nullptr;
+    }
+
     acceptor->AsyncAccept<RASession>();
     return acceptor;
 }
 
-bool LoadRealmInfo()
+bool LoadRealmInfo(boost::asio::io_service& ioService)
 {
-    boost::asio::ip::tcp::resolver resolver(_ioService);
+    boost::asio::ip::tcp::resolver resolver(ioService);
     boost::asio::ip::tcp::resolver::iterator end;
 
     QueryResult result = LoginDatabase.PQuery("SELECT id, name, address, localAddress, localSubnetMask, port, icon, flag, timezone, allowedSecurityLevel, population, gamebuild, Region, Battlegroup FROM realmlist WHERE id = %u", realm.Id.Realm);