internal static extern SocketError setsockopt(
[In] SafeSocketHandle socketHandle,
[In] SocketOptionLevel optionLevel,
[In] SocketOptionName optionName,
[In] ref IPMulticastRequest mreq,
[In] int optionLength);
internal static extern SocketError getsockopt(
[In] SafeCloseSocket socketHandle,
[In] SocketOptionLevel optionLevel,
[In] SocketOptionName optionName,
[Out] out IPMulticastRequest optionValue,
[In, Out] ref int optionLength);
internal static partial SocketError setsockopt(
SafeSocketHandle socketHandle,
SocketOptionLevel optionLevel,
SocketOptionName optionName,
ref IPMulticastRequest mreq,
int optionLength);
private void SetMulticastOption(SocketOptionName optionName, MulticastOption mr)
{
IPMulticastRequest mreq = new IPMulticastRequest();
mreq.MulticastAddress = (int)mr.Group.Address;
if (mr.LocalAddress != null)
{
mreq.InterfaceAddress = (int)mr.LocalAddress.Address;
}
else
{
int num = IPAddress.HostToNetworkOrder(mr.InterfaceIndex);
mreq.InterfaceAddress = num;
}
if (UnsafeMethods.setsockopt(Handle, SocketOptionLevel.IPv6, optionName, ref mreq, IPv6MulticastRequest.Size) ==
SocketError.SocketError)
{
throw new SocketException();
}
}
internal static partial SocketError getsockopt(
SafeSocketHandle socketHandle,
SocketOptionLevel optionLevel,
SocketOptionName optionName,
out IPMulticastRequest optionValue,
ref int optionLength);
