bool CCommunication::Connect(CString sServerIP,DWORD nPort)
{
CAsyncSocket asConnect;
if(!AfxSocketInit())
return false;
if(!asConnect.Create(0, SOCK_STREAM, NULL))
return false;
DWORD dwFlag = 0;
ioctlsocket(asConnect.m_hSocket, FIONBIO, &dwFlag);
if(!asConnect.Connect(sServerIP, nPort))
return false;
dwFlag=1;
ioctlsocket(asConnect.m_hSocket, FIONBIO, &dwFlag);
m_WorkSocket = asConnect.Detach();
return true;
}
BOOL cNetworkPortController::LockPort(const UINT nPort, const int iFlags)
{
m_strResult = "";
m_bTcpResult = FALSE;
m_bUdpResult = FALSE;
m_strTcpResult = "";
m_strUdpResult = "";
if ( iFlags == NONE )
{
m_strResult = "No socket type specified";
return FALSE;
}
else if ( iFlags > ALL )
{
m_strResult = "Invalid socket type specified";
return FALSE;
}
CAsyncSocket *pSocket = NULL;
CString strSocketType;
CMapWordToOb *pMap = NULL;
BOOL *pbResult = NULL;
CString *pstrResult = NULL;
int iSocketType;
if ( iFlags & UDP )
{
strSocketType = "UDP";
pMap = &m_mOpenUdpPorts;
iSocketType = SOCK_DGRAM;
pbResult = &m_bUdpResult;
pstrResult = &m_strUdpResult;
}
else
{
strSocketType = "TCP";
pMap = &m_mOpenTcpPorts;
iSocketType = SOCK_STREAM;
pbResult = &m_bTcpResult;
pstrResult = &m_strTcpResult;
}
CString strTemp;
while ( iSocketType )
{
pSocket = new CAsyncSocket();
// check for successfull construction socket
if ( !AfxIsValidAddress( pSocket, 1, FALSE ) || pSocket <= 0 )
{
m_strResult = "Error while allocating memory";
return FALSE;
}
// create the socket
if ( !pSocket->Create( nPort, iSocketType, 0 ) )
{
DWORD dwErr = GetLastError();
delete pSocket;
if ( dwErr == WSAEADDRINUSE )
*pstrResult = "In use by another app";
else
*pstrResult = "Not locked";
return FALSE;
}
else
{
// save ptr to new socket for cleanup later
pMap->SetAt( nPort, pSocket );
*pbResult = TRUE;
*pstrResult = "Locked";
}
if ( (iSocketType == SOCK_DGRAM) && (iFlags & TCP) )
{
iSocketType = SOCK_STREAM;
pMap = &m_mOpenTcpPorts;
pbResult = &m_bTcpResult;
pstrResult = &m_strTcpResult;
}
else
{
iSocketType = 0;
pMap = NULL;
pbResult = NULL;
pstrResult = NULL;
}
}
return TRUE;
}