// Functionality:
// Read UDT options.
// Parameters:
// 0) [in] optName: The enum name of a UDT option.
// 1) [in] optval: The value to be returned.
// 2) [out] optlen: size of "optval".
// Returned value:
// None.
void getOpt(UDTOpt optName, Object optval, int optlen)
{
CGuard cg = new CGuard(m_ConnectionLock);
switch (optName)
{
case UDT_MSS:
*(int*)optval = m_iMSS;
optlen = sizeof(int);
break;
case UDT_SNDSYN:
*(bool*)optval = m_bSynSending;
optlen = sizeof(bool);
break;
case UDT_RCVSYN:
*(bool*)optval = m_bSynRecving;
optlen = sizeof(bool);
break;
case UDT_CC:
if (!m_bOpened)
throw new CUDTException(5, 5, 0);
*(CCC**)optval = m_pCC;
optlen = sizeof(CCC*);
break;
case UDT_FC:
*(int*)optval = m_iFlightFlagSize;
optlen = sizeof(int);
break;
case UDT_SNDBUF:
*(int*)optval = m_iSndBufSize * (m_iMSS - 28);
optlen = sizeof(int);
break;
case UDT_RCVBUF:
*(int*)optval = m_iRcvBufSize * (m_iMSS - 28);
optlen = sizeof(int);
break;
case UDT_LINGER:
if (optlen < (int)(sizeof(linger)))
throw new CUDTException(5, 3, 0);
*(linger*)optval = m_Linger;
optlen = sizeof(linger);
break;
case UDP_SNDBUF:
*(int*)optval = m_iUDPSndBufSize;
optlen = sizeof(int);
break;
case UDP_RCVBUF:
*(int*)optval = m_iUDPRcvBufSize;
optlen = sizeof(int);
break;
case UDT_RENDEZVOUS:
*(bool *)optval = m_bRendezvous;
optlen = sizeof(bool);
break;
case UDT_SNDTIMEO:
*(int*)optval = m_iSndTimeOut;
optlen = sizeof(int);
break;
case UDT_RCVTIMEO:
*(int*)optval = m_iRcvTimeOut;
optlen = sizeof(int);
break;
case UDT_REUSEADDR:
*(bool *)optval = m_bReuseAddr;
optlen = sizeof(bool);
break;
case UDT_MAXBW:
*(Int64*)optval = m_llMaxBW;
break;
default:
throw new CUDTException(5, 0, 0);
}
}
public static int setsockopt(UDTSOCKET u, int level, UDTOpt optname, Object optval, int optlen)
{
try
{
CUDT udt = s_UDTUnited.lookup(u);
udt.setOpt(optname, optval, optlen);
return 0;
}
catch (CUDTException e)
{
s_UDTUnited.setError(new CUDTException(e));
return ERROR;
}
catch (Exception e)
{
s_UDTUnited.setError(new CUDTException(-1, 0, 0));
return ERROR;
}
}
// Functionality:
// Configure UDT options.
// Parameters:
// 0) [in] optName: The enum name of a UDT option.
// 1) [in] optval: The value to be set.
// 2) [in] optlen: size of "optval".
// Returned value:
// None.
void setOpt(UDTOpt optName, Object optval, int optlen)
{
CGuard cg = new CGuard(m_ConnectionLock);
CGuard sendguard = new CGuard(m_SendLock);
CGuard recvguard = new CGuard(m_RecvLock);
switch (optName)
{
case UDTOpt.UDT_MSS:
if (m_bOpened)
throw new CUDTException(5, 1, 0);
if ((int)optval < (int)(28 + sizeof(CHandShake)))
throw new CUDTException(5, 3, 0);
m_iMSS = (int)optval;
// Packet size cannot be greater than UDP buffer size
if (m_iMSS > m_iUDPSndBufSize)
m_iMSS = m_iUDPSndBufSize;
if (m_iMSS > m_iUDPRcvBufSize)
m_iMSS = m_iUDPRcvBufSize;
break;
case UDTOpt.UDT_SNDSYN:
m_bSynSending = (bool)optval;
break;
case UDTOpt.UDT_RCVSYN:
m_bSynRecving = (bool)optval;
break;
case UDTOpt.UDT_CC:
if (m_bConnected)
throw new CUDTException(5, 1, 0);
//if (null != m_pCCFactory)
// delete m_pCCFactory;
m_pCCFactory = ((CCCVirtualFactory )optval).clone();
break;
case UDTOpt.UDT_FC:
if (m_bConnected)
throw new CUDTException(5, 2, 0);
if (*(int*)optval < 1)
throw new CUDTException(5, 3);
// Mimimum recv flight flag size is 32 packets
if (*(int*)optval > 32)
m_iFlightFlagSize = *(int*)optval;
else
m_iFlightFlagSize = 32;
break;
case UDTOpt.UDT_SNDBUF:
if (m_bOpened)
throw new CUDTException(5, 1, 0);
if (*(int*)optval <= 0)
throw new CUDTException(5, 3, 0);
m_iSndBufSize = *(int*)optval / (m_iMSS - 28);
break;
case UDTOpt.UDT_RCVBUF:
if (m_bOpened)
throw new CUDTException(5, 1, 0);
if (*(int*)optval <= 0)
throw new CUDTException(5, 3, 0);
// Mimimum recv buffer size is 32 packets
if (*(int*)optval > (m_iMSS - 28) * 32)
m_iRcvBufSize = *(int*)optval / (m_iMSS - 28);
else
m_iRcvBufSize = 32;
// recv buffer MUST not be greater than FC size
if (m_iRcvBufSize > m_iFlightFlagSize)
m_iRcvBufSize = m_iFlightFlagSize;
break;
case UDTOpt.UDT_LINGER:
m_Linger = *(linger*)optval;
break;
case UDTOpt.UDP_SNDBUF:
if (m_bOpened)
throw new CUDTException(5, 1, 0);
m_iUDPSndBufSize = *(int*)optval;
if (m_iUDPSndBufSize < m_iMSS)
m_iUDPSndBufSize = m_iMSS;
break;
case UDTOpt.UDP_RCVBUF:
if (m_bOpened)
throw new CUDTException(5, 1, 0);
m_iUDPRcvBufSize = *(int*)optval;
if (m_iUDPRcvBufSize < m_iMSS)
m_iUDPRcvBufSize = m_iMSS;
break;
case UDTOpt.UDT_RENDEZVOUS:
if (m_bConnected)
throw new CUDTException(5, 1, 0);
m_bRendezvous = *(bool *)optval;
break;
case UDTOpt.UDT_SNDTIMEO:
m_iSndTimeOut = *(int*)optval;
break;
case UDTOpt.UDT_RCVTIMEO:
m_iRcvTimeOut = *(int*)optval;
break;
case UDTOpt.UDT_REUSEADDR:
if (m_bOpened)
throw new CUDTException(5, 1, 0);
m_bReuseAddr = *(bool*)optval;
break;
case UDTOpt.UDT_MAXBW:
if (m_bConnected)
throw new CUDTException(5, 1, 0);
m_llMaxBW = *(Int64*)optval;
break;
default:
throw new CUDTException(5, 0, 0);
}
}
