public unsafe void BlockSource(IPAddress groupAdress, IPAddress sourceAdress, uint interfaceIndex = 0)
{
if (groupAdress.AddressFamily != sourceAdress.AddressFamily)
throw new ArgumentException("Address family must be the same");
var adress = groupAdress.GetAddressBytes();
var sourceadress = groupAdress.GetAddressBytes();
if (groupAdress.AddressFamily == AddressFamily.InterNetwork)
{
ip_mreq_source value = new ip_mreq_source();
value.imr_interface.s_b4 = (byte)interfaceIndex;
fixed (byte* a = adress)
Unsafe.CopyBlock(value.imr_multiaddr.Address, a, (uint)adress.Length);
fixed (byte* a = sourceadress)
Unsafe.CopyBlock(value.imr_multiaddr.Address, a, (uint)sourceadress.Length);
if (SetSocketOption(IPPROTO_IP_SocketOptions.IP_BLOCK_SOURCE, (void*)&value, Marshal.SizeOf<ip_mreq_source>()) != 0)
WinSock.ThrowLastWSAError();
}
else if (groupAdress.AddressFamily == AddressFamily.InterNetworkV6)
{
//ipv6_mreq value = new ipv6_mreq();
//value.ipv6mr_interface = interfaceIndex;
//fixed (byte* a = adress)
// Unsafe.CopyBlock(value.ipv6mr_multiaddr.Address, a, (uint)adress.Length);
//if (SetSocketOption(IPPROTO_IPV6_SocketOptions., (void*)&value, Marshal.SizeOf<ipv6_mreq>()) != 0)
// WinSock.ThrowLastWSAError();
}
}
public unsafe void UnBlockSource(IPAddress groupAdress, IPAddress sourceAdress, uint interfaceIndex = 0)
{
if (groupAdress.AddressFamily != sourceAdress.AddressFamily)
{
throw new ArgumentException("Address family must be the same");
}
var adress = groupAdress.GetAddressBytes();
var sourceadress = groupAdress.GetAddressBytes();
if (groupAdress.AddressFamily == AddressFamily.InterNetwork)
{
ip_mreq_source value = new ip_mreq_source();
value.imr_interface.s_b4 = (byte)interfaceIndex;
fixed(byte *a = adress)
Unsafe.CopyBlock(value.imr_multiaddr.Address, a, (uint)adress.Length);
fixed(byte *a = sourceadress)
Unsafe.CopyBlock(value.imr_multiaddr.Address, a, (uint)sourceadress.Length);
if (SetSocketOption(IPPROTO_IP_SocketOptions.IP_BLOCK_SOURCE, (void *)&value, Marshal.SizeOf <ip_mreq_source>()) != 0)
{
WinSock.ThrowLastWSAError();
}
}
else if (groupAdress.AddressFamily == AddressFamily.InterNetworkV6)
{
//ipv6_mreq value = new ipv6_mreq();
//value.ipv6mr_interface = interfaceIndex;
//fixed (byte* a = adress)
// Unsafe.CopyBlock(value.ipv6mr_multiaddr.Address, a, (uint)adress.Length);
//if (SetSocketOption(IPPROTO_IPV6_SocketOptions., (void*)&value, Marshal.SizeOf<ipv6_mreq>()) != 0)
// WinSock.ThrowLastWSAError();
}
}
