LosaDev source snapshot 2019

extra/LS_Service/LS_network/cServerSocket.cpp

@@ -0,0 +1,195 @@
+// cServerSocket.cpp: implementation of the cServerSocket class.
+//
+//////////////////////////////////////////////////////////////////////
+
+#include "stdafx.h"
+#include "cServerSocket.h"
+
+
+
+DWORD _tinet_addr(const TCHAR *IP)
+{
+#ifdef UNICODE
+	char temp[16];
+	uint32 nRet = 0;
+	nRet = WideCharToMultiByte(CP_ACP, 0, IP, _tcslen(IP), temp, 15, NULL, NULL);
+	temp[nRet] = 0;
+	return inet_addr(temp);
+#else
+	return inet_addr(IP);
+#endif
+}
+
+
+//////////////////////////////////////////////////////////////////////
+// Construction/Destruction
+//////////////////////////////////////////////////////////////////////
+
+cServerSocket::cServerSocket() : m_backlog(0), m_acceptingCount(0), m_serverSocket(INVALID_SOCKET)
+{
+	Init();
+}
+
+cServerSocket::~cServerSocket()
+{
+	Destroy();
+}
+
+void cServerSocket::Init()
+{
+}
+
+void cServerSocket::Destroy()
+{
+	CloseSocket();
+	Cleanup();
+}
+
+//////////////////////////////////////////////////////////////////////
+// operation
+//////////////////////////////////////////////////////////////////////
+
+// initiates use of WS2_32.DLL 
+BOOL cServerSocket::Startup()
+{
+	WSADATA wsaData;
+    if( WSAStartup( MAKEWORD( 2, 2 ), &wsaData ) != 0 ) 	
+	{
+	   return FALSE;
+    }
+
+	return TRUE;
+}
+
+void cServerSocket::Cleanup()
+{
+	WSACleanup();
+}
+
+// creates a socket 
+BOOL cServerSocket::CreateSocket()
+{
+	m_serverSocket = WSASocket(	AF_INET, 
+									SOCK_STREAM, 
+								    IPPROTO_TCP,
+									NULL,
+									NULL,
+									WSA_FLAG_OVERLAPPED );
+
+
+	if( m_serverSocket != INVALID_SOCKET )
+	{
+		LINGER  lingerStruct;
+		lingerStruct.l_onoff = 1;
+		lingerStruct.l_linger = 0;
+
+		if( setsockopt( m_serverSocket, 
+						SOL_SOCKET, 
+						SO_LINGER,
+						reinterpret_cast<char*>(&lingerStruct), 
+						sizeof(lingerStruct) ) == SOCKET_ERROR )
+		{
+			CloseSocket();
+			return FALSE;
+		}
+		return TRUE;
+	}
+
+	return FALSE;
+}
+
+
+// close a socket 
+void cServerSocket::CloseSocket()
+{
+	if( m_serverSocket != INVALID_SOCKET )
+	{
+		shutdown( m_serverSocket, SD_BOTH );
+		closesocket( m_serverSocket );
+
+		SetSocketHandle( INVALID_SOCKET );
+	}
+}
+
+// associates a local address with a socket
+BOOL cServerSocket::Bind( const uint16 port, const TCHAR* IP )
+{
+	SOCKADDR_IN sin;
+
+	sin.sin_family	= AF_INET;
+	sin.sin_port	= htons( port );
+
+	if( IP )
+		sin.sin_addr.s_addr = _tinet_addr( IP );	
+	else
+		sin.sin_addr.s_addr = INADDR_ANY;
+
+	if( bind(	m_serverSocket, 
+				(LPSOCKADDR)&sin, 
+				sizeof(sin) ) == SOCKET_ERROR ) 
+	{
+		Information( _T("[%lu]error #1(%lu)\r\n"), GetCurrentThreadId(), GetLastError() );
+		CloseSocket();
+		return FALSE;
+	}
+
+	
+	BOOL on = TRUE; // AcceptEx호출 이전에 OS가 connection을 받아들이지 못하도록 설정, netstat상에 대기중인 포트가 보이지 않게됨
+	if( setsockopt( m_serverSocket, 
+					SOL_SOCKET, 
+					SO_CONDITIONAL_ACCEPT,
+					reinterpret_cast<char*>(&on), 
+					sizeof(on) ) == SOCKET_ERROR )
+	{
+		// 2013-06-20 youngdie, 일부 컴퓨터에서 실행이 안되는 경우가 발생함
+		//Information( _T("[%lu]error #2(%lu)\r\n"), GetCurrentThreadId(), GetLastError() );
+		//CloseSocket();
+		//return FALSE;
+	}
+	
+
+	return TRUE;
+}
+
+// listening for an incoming connection
+BOOL cServerSocket::Listen( const int32 backlog )
+{
+    if( listen( m_serverSocket, backlog ) == SOCKET_ERROR ) 
+	{
+		CloseSocket();
+		return FALSE;
+    }
+
+	m_backlog = backlog;
+	return TRUE;
+}
+
+// accepts an incoming connection 
+BOOL cServerSocket::AcceptRequest( SOCKET socket, PVOID outBuffer, LPOVERLAPPED overlapped )
+{
+	DWORD dwBytes = 0;
+	BOOL bResult = AcceptEx(	m_serverSocket,
+								socket,
+								outBuffer,
+								0, // 데이타가 들어올때까지 기다리지 않고 바로 접속을 받아들인다
+								sizeof(SOCKADDR_IN) + 16,
+								sizeof(SOCKADDR_IN) + 16,
+								&dwBytes,
+								overlapped );
+	if( bResult == TRUE )
+	{
+		IncreaseAcceptingCount();
+		return TRUE;
+	}
+	else
+	{
+		DWORD dwError = WSAGetLastError();
+		if( ERROR_IO_PENDING == dwError )	
+		{
+			IncreaseAcceptingCount();
+			return TRUE;
+		}
+		Debug();
+	}
+	return FALSE;
+}