2d58789d66
This makes the table-based callbacks resistent to LuaState unloads and safer to use.
174 lines
3.1 KiB
C++
174 lines
3.1 KiB
C++
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// LuaServerHandle.cpp
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// Implements the cLuaServerHandle class wrapping the cServerHandle functionality for Lua API
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#include "Globals.h"
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#include "LuaServerHandle.h"
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#include "LuaTCPLink.h"
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#include "tolua++/include/tolua++.h"
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cLuaServerHandle::cLuaServerHandle(UInt16 a_Port, cLuaState::cTableRefPtr && a_Callbacks):
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m_Callbacks(std::move(a_Callbacks)),
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m_Port(a_Port)
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{
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}
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cLuaServerHandle::~cLuaServerHandle()
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{
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// If the server handle is still open, close it explicitly:
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Close();
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}
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void cLuaServerHandle::SetServerHandle(cServerHandlePtr a_ServerHandle, cLuaServerHandlePtr a_Self)
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{
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ASSERT(m_ServerHandle == nullptr); // The handle can be set only once
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m_ServerHandle = a_ServerHandle;
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m_Self = a_Self;
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}
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void cLuaServerHandle::Close(void)
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{
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// Safely grab a copy of the server handle:
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cServerHandlePtr ServerHandle = m_ServerHandle;
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if (ServerHandle == nullptr)
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{
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return;
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}
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// Close the underlying server handle:
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ServerHandle->Close();
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// Close all connections at this server:
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cLuaTCPLinkPtrs Connections;
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{
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cCSLock Lock(m_CSConnections);
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std::swap(Connections, m_Connections);
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}
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for (auto & conn: Connections)
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{
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conn->Close();
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}
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Connections.clear();
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// Allow the internal server handle to be deallocated:
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m_ServerHandle.reset();
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}
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bool cLuaServerHandle::IsListening(void)
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{
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// Safely grab a copy of the server handle:
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cServerHandlePtr ServerHandle = m_ServerHandle;
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if (ServerHandle == nullptr)
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{
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return false;
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}
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// Query the underlying server handle:
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return ServerHandle->IsListening();
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}
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void cLuaServerHandle::RemoveLink(cLuaTCPLink * a_Link)
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{
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cCSLock Lock(m_CSConnections);
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for (auto itr = m_Connections.begin(), end = m_Connections.end(); itr != end; ++itr)
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{
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if (itr->get() == a_Link)
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{
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m_Connections.erase(itr);
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break;
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}
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} // for itr - m_Connections[]
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}
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void cLuaServerHandle::Release(void)
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{
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// Close the server, if it isn't closed yet:
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Close();
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// Allow self to deallocate:
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m_Self.reset();
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}
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cTCPLink::cCallbacksPtr cLuaServerHandle::OnIncomingConnection(const AString & a_RemoteIPAddress, UInt16 a_RemotePort)
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{
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// Ask the plugin for link callbacks:
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cLuaState::cTableRefPtr LinkCallbacks;
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if (
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!m_Callbacks->CallTableFn("OnIncomingConnection", a_RemoteIPAddress, a_RemotePort, m_Port, cLuaState::Return, LinkCallbacks) ||
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!LinkCallbacks->IsValid()
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)
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{
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LOGINFO("cNetwork server (port %d) OnIncomingConnection callback failed. Dropping connection.", m_Port);
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return nullptr;
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}
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// Create the link wrapper to use with the callbacks:
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auto res = std::make_shared<cLuaTCPLink>(std::move(LinkCallbacks), m_Self);
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// Add the link to the list of our connections:
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cCSLock Lock(m_CSConnections);
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m_Connections.push_back(res);
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return res;
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}
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void cLuaServerHandle::OnAccepted(cTCPLink & a_Link)
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{
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// Notify the plugin:
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m_Callbacks->CallTableFn("OnAccepted", static_cast<cLuaTCPLink *>(a_Link.GetCallbacks().get()));
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}
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void cLuaServerHandle::OnError(int a_ErrorCode, const AString & a_ErrorMsg)
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{
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// Notify the plugin:
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m_Callbacks->CallTableFn("OnError", a_ErrorCode, a_ErrorMsg);
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}
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