public static SocketError GetMulticastOption(SafeSocketHandle handle, SocketOptionName optionName, out MulticastOption?optionValue)
{
Interop.Winsock.IPMulticastRequest ipmr = default;
int optlen = Interop.Winsock.IPMulticastRequest.Size;
// This can throw ObjectDisposedException.
SocketError errorCode = Interop.Winsock.getsockopt(
handle,
SocketOptionLevel.IP,
optionName,
out ipmr,
ref optlen);
if (errorCode == SocketError.SocketError)
{
optionValue = default(MulticastOption);
return(GetLastSocketError());
}
#if BIGENDIAN
ipmr.MulticastAddress = BinaryPrimitives.ReverseEndianness(ipmr.MulticastAddress);
ipmr.InterfaceAddress = BinaryPrimitives.ReverseEndianness(ipmr.InterfaceAddress);
#endif // BIGENDIAN
IPAddress multicastAddr = new IPAddress(ipmr.MulticastAddress);
IPAddress multicastIntr = new IPAddress(ipmr.InterfaceAddress);
optionValue = new MulticastOption(multicastAddr, multicastIntr);
return(SocketError.Success);
}
public static SocketError SetMulticastOption(SafeCloseSocket handle, SocketOptionName optionName, MulticastOption optionValue)
{
Interop.Winsock.IPMulticastRequest ipmr = new Interop.Winsock.IPMulticastRequest();
#pragma warning disable CS0618 // Address is marked obsolete
ipmr.MulticastAddress = unchecked ((int)optionValue.Group.Address);
#pragma warning restore CS0618
if (optionValue.LocalAddress != null)
{
#pragma warning disable CS0618 // Address is marked obsolete
ipmr.InterfaceAddress = unchecked ((int)optionValue.LocalAddress.Address);
#pragma warning restore CS0618
}
else
{ //this structure works w/ interfaces as well
int ifIndex = IPAddress.HostToNetworkOrder(optionValue.InterfaceIndex);
ipmr.InterfaceAddress = unchecked ((int)ifIndex);
}
#if BIGENDIAN
ipmr.MulticastAddress = (int)(((uint)ipmr.MulticastAddress << 24) |
(((uint)ipmr.MulticastAddress & 0x0000FF00) << 8) |
(((uint)ipmr.MulticastAddress >> 8) & 0x0000FF00) |
((uint)ipmr.MulticastAddress >> 24));
if (optionValue.LocalAddress != null)
{
ipmr.InterfaceAddress = (int)(((uint)ipmr.InterfaceAddress << 24) |
(((uint)ipmr.InterfaceAddress & 0x0000FF00) << 8) |
(((uint)ipmr.InterfaceAddress >> 8) & 0x0000FF00) |
((uint)ipmr.InterfaceAddress >> 24));
}
#endif
// This can throw ObjectDisposedException.
SocketError errorCode = Interop.Winsock.setsockopt(
handle,
SocketOptionLevel.IP,
optionName,
ref ipmr,
Interop.Winsock.IPMulticastRequest.Size);
return(errorCode == SocketError.SocketError ? GetLastSocketError() : SocketError.Success);
}
public static SocketError GetMulticastOption(SafeCloseSocket handle, SocketOptionName optionName, out MulticastOption optionValue)
{
Interop.Winsock.IPMulticastRequest ipmr = new Interop.Winsock.IPMulticastRequest();
int optlen = Interop.Winsock.IPMulticastRequest.Size;
// This can throw ObjectDisposedException.
SocketError errorCode = Interop.Winsock.getsockopt(
handle,
SocketOptionLevel.IP,
optionName,
out ipmr,
ref optlen);
if (errorCode == SocketError.SocketError)
{
optionValue = default(MulticastOption);
return(GetLastSocketError());
}
#if BIGENDIAN
ipmr.MulticastAddress = (int)(((uint)ipmr.MulticastAddress << 24) |
(((uint)ipmr.MulticastAddress & 0x0000FF00) << 8) |
(((uint)ipmr.MulticastAddress >> 8) & 0x0000FF00) |
((uint)ipmr.MulticastAddress >> 24));
ipmr.InterfaceAddress = (int)(((uint)ipmr.InterfaceAddress << 24) |
(((uint)ipmr.InterfaceAddress & 0x0000FF00) << 8) |
(((uint)ipmr.InterfaceAddress >> 8) & 0x0000FF00) |
((uint)ipmr.InterfaceAddress >> 24));
#endif // BIGENDIAN
IPAddress multicastAddr = new IPAddress(ipmr.MulticastAddress);
IPAddress multicastIntr = new IPAddress(ipmr.InterfaceAddress);
optionValue = new MulticastOption(multicastAddr, multicastIntr);
return(SocketError.Success);
}
public static SocketError GetMulticastOption(SafeCloseSocket handle, SocketOptionName optionName, out MulticastOption optionValue)
{
Interop.Winsock.IPMulticastRequest ipmr = new Interop.Winsock.IPMulticastRequest();
int optlen = Interop.Winsock.IPMulticastRequest.Size;
// This can throw ObjectDisposedException.
SocketError errorCode = Interop.Winsock.getsockopt(
handle,
SocketOptionLevel.IP,
optionName,
out ipmr,
ref optlen);
if (errorCode == SocketError.SocketError)
{
optionValue = default(MulticastOption);
return GetLastSocketError();
}
#if BIGENDIAN
ipmr.MulticastAddress = (int) (((uint) ipmr.MulticastAddress << 24) |
(((uint) ipmr.MulticastAddress & 0x0000FF00) << 8) |
(((uint) ipmr.MulticastAddress >> 8) & 0x0000FF00) |
((uint) ipmr.MulticastAddress >> 24));
ipmr.InterfaceAddress = (int) (((uint) ipmr.InterfaceAddress << 24) |
(((uint) ipmr.InterfaceAddress & 0x0000FF00) << 8) |
(((uint) ipmr.InterfaceAddress >> 8) & 0x0000FF00) |
((uint) ipmr.InterfaceAddress >> 24));
#endif // BIGENDIAN
IPAddress multicastAddr = new IPAddress(ipmr.MulticastAddress);
IPAddress multicastIntr = new IPAddress(ipmr.InterfaceAddress);
optionValue = new MulticastOption(multicastAddr, multicastIntr);
return SocketError.Success;
}
public static SocketError SetMulticastOption(SafeCloseSocket handle, SocketOptionName optionName, MulticastOption optionValue)
{
Interop.Winsock.IPMulticastRequest ipmr = new Interop.Winsock.IPMulticastRequest();
ipmr.MulticastAddress = unchecked((int)optionValue.Group.GetAddress());
if (optionValue.LocalAddress != null)
{
ipmr.InterfaceAddress = unchecked((int)optionValue.LocalAddress.GetAddress());
}
else
{ //this structure works w/ interfaces as well
int ifIndex = IPAddress.HostToNetworkOrder(optionValue.InterfaceIndex);
ipmr.InterfaceAddress = unchecked((int)ifIndex);
}
#if BIGENDIAN
ipmr.MulticastAddress = (int) (((uint) ipmr.MulticastAddress << 24) |
(((uint) ipmr.MulticastAddress & 0x0000FF00) << 8) |
(((uint) ipmr.MulticastAddress >> 8) & 0x0000FF00) |
((uint) ipmr.MulticastAddress >> 24));
if (optionValue.LocalAddress != null)
{
ipmr.InterfaceAddress = (int) (((uint) ipmr.InterfaceAddress << 24) |
(((uint) ipmr.InterfaceAddress & 0x0000FF00) << 8) |
(((uint) ipmr.InterfaceAddress >> 8) & 0x0000FF00) |
((uint) ipmr.InterfaceAddress >> 24));
}
#endif
// This can throw ObjectDisposedException.
SocketError errorCode = Interop.Winsock.setsockopt(
handle,
SocketOptionLevel.IP,
optionName,
ref ipmr,
Interop.Winsock.IPMulticastRequest.Size);
return errorCode == SocketError.SocketError ? GetLastSocketError() : SocketError.Success;
}
