CSADDR_INFO

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct SOCKET_ADDRESS
{
    public IntPtr lpSockaddr;
    public int iSockaddrLength;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct CSADDR_INFO
{
    public SOCKET_ADDRESS LocalAddr;
    public SOCKET_ADDRESS RemoteAddr;
    public int iSocketType;
    public int iProtocol;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure SOCKET_ADDRESS
    Public lpSockaddr As IntPtr
    Public iSockaddrLength As Integer
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure CSADDR_INFO
    Public LocalAddr As SOCKET_ADDRESS
    Public RemoteAddr As SOCKET_ADDRESS
    Public iSocketType As Integer
    Public iProtocol As Integer
End Structure

import ctypes
from ctypes import wintypes

class SOCKET_ADDRESS(ctypes.Structure):
    _fields_ = [
        ("lpSockaddr", ctypes.c_void_p),
        ("iSockaddrLength", ctypes.c_int),
    ]

class CSADDR_INFO(ctypes.Structure):
    _fields_ = [
        ("LocalAddr", SOCKET_ADDRESS),
        ("RemoteAddr", SOCKET_ADDRESS),
        ("iSocketType", ctypes.c_int),
        ("iProtocol", ctypes.c_int),
    ]

#[repr(C)]
pub struct SOCKET_ADDRESS {
    pub lpSockaddr: *mut core::ffi::c_void,
    pub iSockaddrLength: i32,
}

#[repr(C)]
pub struct CSADDR_INFO {
    pub LocalAddr: SOCKET_ADDRESS,
    pub RemoteAddr: SOCKET_ADDRESS,
    pub iSocketType: i32,
    pub iProtocol: i32,
}

import "golang.org/x/sys/windows"

type SOCKET_ADDRESS struct {
	lpSockaddr uintptr
	iSockaddrLength int32
}

type CSADDR_INFO struct {
	LocalAddr SOCKET_ADDRESS
	RemoteAddr SOCKET_ADDRESS
	iSocketType int32
	iProtocol int32
}

type
  SOCKET_ADDRESS = record
    lpSockaddr: Pointer;
    iSockaddrLength: Integer;
  end;

  CSADDR_INFO = record
    LocalAddr: SOCKET_ADDRESS;
    RemoteAddr: SOCKET_ADDRESS;
    iSocketType: Integer;
    iProtocol: Integer;
  end;

const SOCKET_ADDRESS = extern struct {
    lpSockaddr: ?*anyopaque,
    iSockaddrLength: i32,
};

const CSADDR_INFO = extern struct {
    LocalAddr: SOCKET_ADDRESS,
    RemoteAddr: SOCKET_ADDRESS,
    iSocketType: i32,
    iProtocol: i32,
};

type
  SOCKET_ADDRESS {.bycopy.} = object
    lpSockaddr: pointer
    iSockaddrLength: int32

  CSADDR_INFO {.bycopy.} = object
    LocalAddr: SOCKET_ADDRESS
    RemoteAddr: SOCKET_ADDRESS
    iSocketType: int32
    iProtocol: int32

struct SOCKET_ADDRESS
{
    void* lpSockaddr;
    int iSockaddrLength;
}

struct CSADDR_INFO
{
    SOCKET_ADDRESS LocalAddr;
    SOCKET_ADDRESS RemoteAddr;
    int iSocketType;
    int iProtocol;
}