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[StructLayout(LayoutKind.Sequential)]
public struct SockAddr
{
public ushort Family;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 14)]
public byte[] Data;
};
[StructLayout(LayoutKind.Sequential)]
public struct SockAddrIn
{
public ushort Family;
public ushort Port;
public uint Addr;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
public byte[] Zero;
}
[StructLayout(LayoutKind.Sequential)]
public struct SockAddrIn6
{
public ushort Family;
public ushort Port;
public uint FlowInfo;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
public byte[] Addr;
public uint ScopeId;
};
public IPAddress ConvertSockAddrPtrToIPAddress(IntPtr sockAddrPtr)
{
SockAddr sockAddr = (SockAddr)Marshal.PtrToStructure(sockAddrPtr, typeof(SockAddr));
switch ((SockAddrFamily)sockAddr.Family)
{
case SockAddrFamily.Inet:
{
SockAddrIn sockAddrIn = (SockAddrIn)Marshal.PtrToStructure(sockAddrPtr, typeof(SockAddrIn));
return new IPAddress(sockAddrIn.Addr);
}
case SockAddrFamily.Inet6:
{
SockAddrIn6 sockAddrIn6 = (SockAddrIn6)Marshal.PtrToStructure(sockAddrPtr, typeof(SockAddrIn6));
return new IPAddress(sockAddrIn6.Addr);
}
default:
throw new Exception(string.Format("Non-IP address family: {0}", sockAddr.Family));
}
}
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