/// <summary>
///
/// </summary>
/// <param name="af"></param>
/// <param name="type"></param>
/// <param name="protocol"></param>
/// <returns></returns>
//public static UDTSOCKET socket(int af, int type = SOCK_STREAM, int protocol = 0);
public static UDTSOCKET socket(AddressFamily af, UDTSockType type, int protocol)
{
if (!s_UDTUnited.m_bGCStatus)
s_UDTUnited.startup();
try
{
return s_UDTUnited.newSocket(af, type);
}
catch (CUDTException e)
{
s_UDTUnited.setError(new CUDTException(e));
return INVALID_SOCK;
}
catch (bad_alloc)
{
s_UDTUnited.setError(new CUDTException(3, 2, 0));
return INVALID_SOCK;
}
catch (Exception e)
{
s_UDTUnited.setError(new CUDTException(-1, 0, 0));
return INVALID_SOCK;
}
}
// Functionality:
// Create a new UDT socket.
// Parameters:
// 0) [in] af: IP version, IPv4 (AF_INET) or IPv6 (AF_INET6).
// 1) [in] type: socket type, SOCK_STREAM or SOCK_DGRAM
// Returned value:
// The new UDT socket ID, or INVALID_SOCK.
UDTSOCKET newSocket(AddressFamily af, UDTSockType type)
{
//if ((type != UDTSockType.SOCK_STREAM) && (type != UDTSockType.SOCK_DGRAM))
// throw new CUDTException(5, 3, 0);
UdtSocket ns = null;
try
{
ns = new UdtSocket();
ns.m_pUDT = new CUDT();
ns.m_pSelfAddr = new IPAddress();
if (AddressFamily.InterNetwork == af)
{
ns.m_pSelfAddr = new IPEndPoint(IPAddress.Any, 0);
}
else
{
ns.m_pSelfAddr = new IPEndPoint(IPAddress.IPv6Any, 0);
}
}
catch (Exception e)
{
//delete ns;
throw new CUDTException(3, 2, 0);
}
lock (m_IDLock)
{
ns.m_SocketID = --m_SocketID;
}
ns.m_Status = UDTSTATUS.INIT;
ns.m_ListenSocket = 0;
ns.m_pUDT.m_SocketID = ns.m_SocketID;
ns.m_pUDT.m_iSockType = (UDTSockType.SOCK_STREAM == type) ? UDTSockType.UDT_STREAM : UDTSockType.UDT_DGRAM;
ns.m_pUDT.m_iIPversion = ns.m_iIPversion = af;
ns.m_pUDT.m_pCache = m_pCache;
// protect the m_Sockets structure.
lock (m_ControlLock)
{
try
{
m_Sockets[ns.m_SocketID] = ns;
}
catch (Exception e)
{
//failure and rollback
//delete ns;
ns = null;
}
}
if (null == ns)
throw new CUDTException(3, 2, 0);
return ns.m_SocketID;
}
internal CRNode m_pRNode; // node information for UDT list used in rcv queue
#endregion
#region constructor and desctructor
CUDT(CUDT ancestor)
{
m_pSndBuffer = null;
m_pRcvBuffer = null;
m_pSndLossList = null;
m_pRcvLossList = null;
m_pACKWindow = null;
m_pSndTimeWindow = null;
m_pRcvTimeWindow = null;
m_pSndQueue = null;
m_pRcvQueue = null;
m_pPeerAddr = null;
m_pSNode = null;
m_pRNode = null;
// Initilize mutex and condition variables
initSynch();
// Default UDT configurations
m_iMSS = ancestor.m_iMSS;
m_bSynSending = ancestor.m_bSynSending;
m_bSynRecving = ancestor.m_bSynRecving;
m_iFlightFlagSize = ancestor.m_iFlightFlagSize;
m_iSndBufSize = ancestor.m_iSndBufSize;
m_iRcvBufSize = ancestor.m_iRcvBufSize;
m_Linger = ancestor.m_Linger;
m_iUDPSndBufSize = ancestor.m_iUDPSndBufSize;
m_iUDPRcvBufSize = ancestor.m_iUDPRcvBufSize;
m_iSockType = ancestor.m_iSockType;
m_iIPversion = ancestor.m_iIPversion;
m_bRendezvous = ancestor.m_bRendezvous;
m_iSndTimeOut = ancestor.m_iSndTimeOut;
m_iRcvTimeOut = ancestor.m_iRcvTimeOut;
m_bReuseAddr = true; // this must be true, because all accepted sockets shared the same port with the listener
m_llMaxBW = ancestor.m_llMaxBW;
m_pCCFactory = ancestor.m_pCCFactory.clone();
m_pCC = null;
m_pCache = ancestor.m_pCache;
// Initial status
m_bOpened = false;
m_bListening = false;
m_bConnected = false;
m_bClosing = false;
m_bShutdown = false;
m_bBroken = false;
}