void CALLBACK RecvCompletion(DWORD dwError, DWORD cbTransferred, LPWSAOVERLAPPED lpOverlapped, DWORD dwFlags)
{
ClientSession* fromClient = static_cast<OverlappedIO*>(lpOverlapped)->mObject;
fromClient->DecRefCount();
if (!fromClient->IsConnected())
return;
/// 에러 발생시 해당 세션 종료
if (dwError || cbTransferred == 0)
{
fromClient->Disconnect();
return;
}
/// 받은 데이터 처리
fromClient->OnRead(cbTransferred);
/// 다시 받기
if (false == fromClient->PostRecv())
{
fromClient->Disconnect();
return;
}
}
///////////////////////////////////////////////////////////
// 비동기 입력 WSARecv()에 의해서, 입력이 완료 되면 콜백으로 RecvCompletion 실행
void CALLBACK RecvCompletion( DWORD dwError, DWORD cbTransferred, LPWSAOVERLAPPED lpOverlapped, DWORD dwFlags )
{
// lpOverlapped 인자를 OverlappedIO 형태로 형변환 하면
// 해당 구조체의 멤버 변수 mObject => ClientSession*
// 바로 이 포인터가 비동기 입력 WSARecv로 보낸 ClientSession 객체의 주소값
// PostRecv 멤소드에서 mOverlappedRecv.mObject = this ; 이 부분 참조
ClientSession* fromClient = static_cast<OverlappedIO*>( lpOverlapped )->m_Object;
// Overlapped IO 완료 했음. 카운트 감소
fromClient->DecOverlappedRequest();
if ( !fromClient->IsConnected() )
return;
/// 에러 발생시 해당 세션 종료
if ( dwError || cbTransferred == 0 )
{
LogD( "[Disconnected from:]ClientSession::RecvCompletion dwError \n" );
fromClient->Disconnect();
return;
}
/// 받은 데이터 처리
fromClient->OnRead( cbTransferred );
/// 다시 받기
if ( false == fromClient->PostRecv() )
{
LogD( "[Disconnected from:]ClientSession::RecvCompletion PostRecv \n" );
fromClient->Disconnect();
return;
}
}
void ClientManager::CollectGarbageSessions()
{
std::vector<ClientSession*> disconnectedSessions ;
///FYI: C++ 11 람다를 이용한 스타일
std::for_each(mClientList.begin(), mClientList.end(),
[&](ClientList::const_reference it)
{
ClientSession* client = it.second ;
if ( false == client->IsConnected() && 0 == client->GetRefCount() )
disconnectedSessions.push_back(client) ;
}
) ;
///FYI: C언어 스타일의 루프
for (size_t i=0 ; i<disconnectedSessions.size() ; ++i)
{
ClientSession* client = disconnectedSessions[i] ;
mClientList.erase(client->mSocket) ;
delete client ;
}
}
void CALLBACK SendCompletion( DWORD dwError, DWORD cbTransferred, LPWSAOVERLAPPED lpOverlapped, DWORD dwFlags )
{
ClientSession* fromClient = static_cast<OverlappedIO*>(lpOverlapped)->mObject;
fromClient->DecOverlappedRequest();
if ( !fromClient->IsConnected() )
return;
/// 에러 발생시 해당 세션 종료
if ( dwError || cbTransferred == 0 )
{
fromClient->Disconnect();
return;
}
fromClient->OnWriteComplete(cbTransferred);
}
// 비동기 출력 WSASend()에 의해서 출력이 완료 되면 콜백으로 SendCompletion 실행
void CALLBACK SendCompletion( DWORD dwError, DWORD cbTransferred, LPWSAOVERLAPPED lpOverlapped, DWORD dwFlags )
{
ClientSession* fromClient = static_cast<OverlappedIO*>( lpOverlapped )->m_Object;
// Overlapped IO 완료 했음. 카운트 감소
fromClient->DecOverlappedRequest();
if ( !fromClient->IsConnected() )
{
return;
}
/// 에러 발생시 해당 세션 종료
if ( dwError || cbTransferred == 0 )
{
LogD( "[Disconnected from:]ClientSession::SendCompletion dwError \n" );
fromClient->Disconnect();
return;
}
/// 보내기 완료한 데이터를 버퍼에서 제거
fromClient->OnWriteComplete( cbTransferred );
}