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// LuaUDPEndpoint.cpp
// Implements the cLuaUDPEndpoint class representing a Lua wrapper for the cUDPEndpoint class and the callbacks it needs
#include "Globals.h"
#include "LuaUDPEndpoint.h"
cLuaUDPEndpoint::cLuaUDPEndpoint(cPluginLua & a_Plugin, int a_CallbacksTableStackPos):
m_Plugin(a_Plugin),
m_Callbacks(a_Plugin.GetLuaState(), a_CallbacksTableStackPos)
{
// Warn if the callbacks aren't valid:
if (!m_Callbacks.IsValid())
{
LOGWARNING("cLuaUDPEndpoint in plugin %s: callbacks could not be retrieved", m_Plugin.GetName().c_str());
cPluginLua::cOperation Op(m_Plugin);
Op().LogStackTrace();
}
}
cLuaUDPEndpoint::~cLuaUDPEndpoint()
{
// If the endpoint is still open, close it:
cUDPEndpointPtr Endpoint = m_Endpoint;
if (Endpoint != nullptr)
{
Endpoint->Close();
}
Terminated();
}
bool cLuaUDPEndpoint::Open(UInt16 a_Port, cLuaUDPEndpointPtr a_Self)
{
ASSERT(m_Self == nullptr); // Must not be opened yet
ASSERT(m_Endpoint == nullptr);
m_Self = a_Self;
m_Endpoint = cNetwork::CreateUDPEndpoint(a_Port, *this);
return m_Endpoint->IsOpen();
}
bool cLuaUDPEndpoint::Send(const AString & a_Data, const AString & a_RemotePeer, UInt16 a_RemotePort)
{
// Safely grab a copy of the endpoint:
cUDPEndpointPtr Endpoint = m_Endpoint;
if (Endpoint == nullptr)
{
return false;
}
// Send the data:
return Endpoint->Send(a_Data, a_RemotePeer, a_RemotePort);
}
UInt16 cLuaUDPEndpoint::GetPort(void) const
{
// Safely grab a copy of the endpoint:
cUDPEndpointPtr Endpoint = m_Endpoint;
if (Endpoint == nullptr)
{
return 0;
}
// Get the port:
return Endpoint->GetPort();
}
bool cLuaUDPEndpoint::IsOpen(void) const
{
// Safely grab a copy of the endpoint:
cUDPEndpointPtr Endpoint = m_Endpoint;
if (Endpoint == nullptr)
{
// No endpoint means that we're not open
return false;
}
// Get the state:
return Endpoint->IsOpen();
}
void cLuaUDPEndpoint::Close(void)
{
// If the endpoint is still open, close it:
cUDPEndpointPtr Endpoint = m_Endpoint;
if (Endpoint != nullptr)
{
Endpoint->Close();
m_Endpoint.reset();
}
Terminated();
}
void cLuaUDPEndpoint::EnableBroadcasts(void)
{
// Safely grab a copy of the endpoint:
cUDPEndpointPtr Endpoint = m_Endpoint;
if (Endpoint != nullptr)
{
Endpoint->EnableBroadcasts();
}
}
void cLuaUDPEndpoint::Release(void)
{
// Close the endpoint, if not already closed:
Close();
// Allow self to deallocate:
m_Self.reset();
}
void cLuaUDPEndpoint::Terminated(void)
{
// Disable the callbacks:
if (m_Callbacks.IsValid())
{
m_Callbacks.UnRef();
}
// If the endpoint is still open, close it:
{
cUDPEndpointPtr Endpoint = m_Endpoint;
if (Endpoint != nullptr)
{
Endpoint->Close();
m_Endpoint.reset();
}
}
}
void cLuaUDPEndpoint::OnReceivedData(const char * a_Data, size_t a_NumBytes, const AString & a_RemotePeer, UInt16 a_RemotePort)
{
// Check if we're still valid:
if (!m_Callbacks.IsValid())
{
return;
}
// Call the callback:
cPluginLua::cOperation Op(m_Plugin);
if (!Op().Call(cLuaState::cTableRef(m_Callbacks, "OnReceivedData"), this, AString(a_Data, a_NumBytes), a_RemotePeer, a_RemotePort))
{
LOGINFO("cUDPEndpoint OnReceivedData callback failed in plugin %s.", m_Plugin.GetName().c_str());
}
}
void cLuaUDPEndpoint::OnError(int a_ErrorCode, const AString & a_ErrorMsg)
{
// Check if we're still valid:
if (!m_Callbacks.IsValid())
{
return;
}
// Call the callback:
cPluginLua::cOperation Op(m_Plugin);
if (!Op().Call(cLuaState::cTableRef(m_Callbacks, "OnError"), a_ErrorCode, a_ErrorMsg))
{
LOGINFO("cUDPEndpoint OnError() callback failed in plugin %s; the endpoint error is %d (%s).",
m_Plugin.GetName().c_str(), a_ErrorCode, a_ErrorMsg.c_str()
);
}
Terminated();
}
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