WSADuplicateSocketW

// WS2_32.dll  (Unicode / -W)
#include <windows.h>

INT WSADuplicateSocketW(
    SOCKET s,
    DWORD dwProcessId,
    WSAPROTOCOL_INFOW* lpProtocolInfo
);

<DllImport("WS2_32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WSADuplicateSocketW(
    s As UIntPtr,   ' SOCKET
    dwProcessId As UInteger,   ' DWORD
    lpProtocolInfo As IntPtr   ' WSAPROTOCOL_INFOW* out
) As Integer
End Function

' s : SOCKET
' dwProcessId : DWORD
' lpProtocolInfo : WSAPROTOCOL_INFOW* out
Declare PtrSafe Function WSADuplicateSocketW Lib "ws2_32" ( _
    ByVal s As LongPtr, _
    ByVal dwProcessId As Long, _
    ByVal lpProtocolInfo As LongPtr) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

WSADuplicateSocketW = ctypes.windll.ws2_32.WSADuplicateSocketW
WSADuplicateSocketW.restype = ctypes.c_int
WSADuplicateSocketW.argtypes = [
    ctypes.c_size_t,  # s : SOCKET
    wintypes.DWORD,  # dwProcessId : DWORD
    ctypes.c_void_p,  # lpProtocolInfo : WSAPROTOCOL_INFOW* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WS2_32.dll')
WSADuplicateSocketW = Fiddle::Function.new(
  lib['WSADuplicateSocketW'],
  [
    Fiddle::TYPE_UINTPTR_T,  # s : SOCKET
    -Fiddle::TYPE_INT,  # dwProcessId : DWORD
    Fiddle::TYPE_VOIDP,  # lpProtocolInfo : WSAPROTOCOL_INFOW* out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "ws2_32")]
extern "system" {
    fn WSADuplicateSocketW(
        s: usize,  // SOCKET
        dwProcessId: u32,  // DWORD
        lpProtocolInfo: *mut WSAPROTOCOL_INFOW  // WSAPROTOCOL_INFOW* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WS2_32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern int WSADuplicateSocketW(UIntPtr s, uint dwProcessId, IntPtr lpProtocolInfo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WS2_32_WSADuplicateSocketW' -Namespace Win32 -PassThru
# $api::WSADuplicateSocketW(s, dwProcessId, lpProtocolInfo)

#uselib "WS2_32.dll"
#func global WSADuplicateSocketW "WSADuplicateSocketW" wptr, wptr, wptr
; WSADuplicateSocketW s, dwProcessId, varptr(lpProtocolInfo)   ; 戻り値は stat
; s : SOCKET -> "wptr"
; dwProcessId : DWORD -> "wptr"
; lpProtocolInfo : WSAPROTOCOL_INFOW* out -> "wptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "WS2_32.dll"
#cfunc global WSADuplicateSocketW "WSADuplicateSocketW" sptr, int, var
; res = WSADuplicateSocketW(s, dwProcessId, lpProtocolInfo)
; s : SOCKET -> "sptr"
; dwProcessId : DWORD -> "int"
; lpProtocolInfo : WSAPROTOCOL_INFOW* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; INT WSADuplicateSocketW(SOCKET s, DWORD dwProcessId, WSAPROTOCOL_INFOW* lpProtocolInfo)
#uselib "WS2_32.dll"
#cfunc global WSADuplicateSocketW "WSADuplicateSocketW" intptr, int, var
; res = WSADuplicateSocketW(s, dwProcessId, lpProtocolInfo)
; s : SOCKET -> "intptr"
; dwProcessId : DWORD -> "int"
; lpProtocolInfo : WSAPROTOCOL_INFOW* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	ws2_32 = windows.NewLazySystemDLL("WS2_32.dll")
	procWSADuplicateSocketW = ws2_32.NewProc("WSADuplicateSocketW")
)

// s (SOCKET), dwProcessId (DWORD), lpProtocolInfo (WSAPROTOCOL_INFOW* out)
r1, _, err := procWSADuplicateSocketW.Call(
	uintptr(s),
	uintptr(dwProcessId),
	uintptr(lpProtocolInfo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function WSADuplicateSocketW(
  s: NativeUInt;   // SOCKET
  dwProcessId: DWORD;   // DWORD
  lpProtocolInfo: Pointer   // WSAPROTOCOL_INFOW* out
): Integer; stdcall;
  external 'WS2_32.dll' name 'WSADuplicateSocketW';

result := DllCall("WS2_32\WSADuplicateSocketW"
    , "UPtr", s   ; SOCKET
    , "UInt", dwProcessId   ; DWORD
    , "Ptr", lpProtocolInfo   ; WSAPROTOCOL_INFOW* out
    , "Int")   ; return: INT

●WSADuplicateSocketW(s, dwProcessId, lpProtocolInfo) = DLL("WS2_32.dll", "int WSADuplicateSocketW(int, dword, void*)")
# 呼び出し: WSADuplicateSocketW(s, dwProcessId, lpProtocolInfo)
# s : SOCKET -> "int"
# dwProcessId : DWORD -> "dword"
# lpProtocolInfo : WSAPROTOCOL_INFOW* out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。