WSAAddressToStringA

// WS2_32.dll  (ANSI / -A)
#include <windows.h>

INT WSAAddressToStringA(
    SOCKADDR* lpsaAddress,
    DWORD dwAddressLength,
    WSAPROTOCOL_INFOA* lpProtocolInfo,   // optional
    LPSTR lpszAddressString,
    DWORD* lpdwAddressStringLength
);

<DllImport("WS2_32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WSAAddressToStringA(
    lpsaAddress As IntPtr,   ' SOCKADDR*
    dwAddressLength As UInteger,   ' DWORD
    lpProtocolInfo As IntPtr,   ' WSAPROTOCOL_INFOA* optional
    <MarshalAs(UnmanagedType.LPStr)> lpszAddressString As System.Text.StringBuilder,   ' LPSTR out
    ByRef lpdwAddressStringLength As UInteger   ' DWORD* in/out
) As Integer
End Function

' lpsaAddress : SOCKADDR*
' dwAddressLength : DWORD
' lpProtocolInfo : WSAPROTOCOL_INFOA* optional
' lpszAddressString : LPSTR out
' lpdwAddressStringLength : DWORD* in/out
Declare PtrSafe Function WSAAddressToStringA Lib "ws2_32" ( _
    ByVal lpsaAddress As LongPtr, _
    ByVal dwAddressLength As Long, _
    ByVal lpProtocolInfo As LongPtr, _
    ByVal lpszAddressString As String, _
    ByRef lpdwAddressStringLength As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

WSAAddressToStringA = ctypes.windll.ws2_32.WSAAddressToStringA
WSAAddressToStringA.restype = ctypes.c_int
WSAAddressToStringA.argtypes = [
    ctypes.c_void_p,  # lpsaAddress : SOCKADDR*
    wintypes.DWORD,  # dwAddressLength : DWORD
    ctypes.c_void_p,  # lpProtocolInfo : WSAPROTOCOL_INFOA* optional
    wintypes.LPSTR,  # lpszAddressString : LPSTR out
    ctypes.POINTER(wintypes.DWORD),  # lpdwAddressStringLength : DWORD* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WS2_32.dll')
WSAAddressToStringA = Fiddle::Function.new(
  lib['WSAAddressToStringA'],
  [
    Fiddle::TYPE_VOIDP,  # lpsaAddress : SOCKADDR*
    -Fiddle::TYPE_INT,  # dwAddressLength : DWORD
    Fiddle::TYPE_VOIDP,  # lpProtocolInfo : WSAPROTOCOL_INFOA* optional
    Fiddle::TYPE_VOIDP,  # lpszAddressString : LPSTR out
    Fiddle::TYPE_VOIDP,  # lpdwAddressStringLength : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "ws2_32")]
extern "system" {
    fn WSAAddressToStringA(
        lpsaAddress: *mut SOCKADDR,  // SOCKADDR*
        dwAddressLength: u32,  // DWORD
        lpProtocolInfo: *mut WSAPROTOCOL_INFOA,  // WSAPROTOCOL_INFOA* optional
        lpszAddressString: *mut u8,  // LPSTR out
        lpdwAddressStringLength: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WS2_32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern int WSAAddressToStringA(IntPtr lpsaAddress, uint dwAddressLength, IntPtr lpProtocolInfo, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder lpszAddressString, ref uint lpdwAddressStringLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WS2_32_WSAAddressToStringA' -Namespace Win32 -PassThru
# $api::WSAAddressToStringA(lpsaAddress, dwAddressLength, lpProtocolInfo, lpszAddressString, lpdwAddressStringLength)

#uselib "WS2_32.dll"
#func global WSAAddressToStringA "WSAAddressToStringA" sptr, sptr, sptr, sptr, sptr
; WSAAddressToStringA varptr(lpsaAddress), dwAddressLength, varptr(lpProtocolInfo), varptr(lpszAddressString), varptr(lpdwAddressStringLength)   ; 戻り値は stat
; lpsaAddress : SOCKADDR* -> "sptr"
; dwAddressLength : DWORD -> "sptr"
; lpProtocolInfo : WSAPROTOCOL_INFOA* optional -> "sptr"
; lpszAddressString : LPSTR out -> "sptr"
; lpdwAddressStringLength : DWORD* in/out -> "sptr"
; ※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 WSAAddressToStringA "WSAAddressToStringA" var, int, var, var, var
; res = WSAAddressToStringA(lpsaAddress, dwAddressLength, lpProtocolInfo, lpszAddressString, lpdwAddressStringLength)
; lpsaAddress : SOCKADDR* -> "var"
; dwAddressLength : DWORD -> "int"
; lpProtocolInfo : WSAPROTOCOL_INFOA* optional -> "var"
; lpszAddressString : LPSTR out -> "var"
; lpdwAddressStringLength : DWORD* in/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 WSAAddressToStringA(SOCKADDR* lpsaAddress, DWORD dwAddressLength, WSAPROTOCOL_INFOA* lpProtocolInfo, LPSTR lpszAddressString, DWORD* lpdwAddressStringLength)
#uselib "WS2_32.dll"
#cfunc global WSAAddressToStringA "WSAAddressToStringA" var, int, var, var, var
; res = WSAAddressToStringA(lpsaAddress, dwAddressLength, lpProtocolInfo, lpszAddressString, lpdwAddressStringLength)
; lpsaAddress : SOCKADDR* -> "var"
; dwAddressLength : DWORD -> "int"
; lpProtocolInfo : WSAPROTOCOL_INFOA* optional -> "var"
; lpszAddressString : LPSTR out -> "var"
; lpdwAddressStringLength : DWORD* in/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")
	procWSAAddressToStringA = ws2_32.NewProc("WSAAddressToStringA")
)

// lpsaAddress (SOCKADDR*), dwAddressLength (DWORD), lpProtocolInfo (WSAPROTOCOL_INFOA* optional), lpszAddressString (LPSTR out), lpdwAddressStringLength (DWORD* in/out)
r1, _, err := procWSAAddressToStringA.Call(
	uintptr(lpsaAddress),
	uintptr(dwAddressLength),
	uintptr(lpProtocolInfo),
	uintptr(lpszAddressString),
	uintptr(lpdwAddressStringLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function WSAAddressToStringA(
  lpsaAddress: Pointer;   // SOCKADDR*
  dwAddressLength: DWORD;   // DWORD
  lpProtocolInfo: Pointer;   // WSAPROTOCOL_INFOA* optional
  lpszAddressString: PAnsiChar;   // LPSTR out
  lpdwAddressStringLength: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'WS2_32.dll' name 'WSAAddressToStringA';

result := DllCall("WS2_32\WSAAddressToStringA"
    , "Ptr", lpsaAddress   ; SOCKADDR*
    , "UInt", dwAddressLength   ; DWORD
    , "Ptr", lpProtocolInfo   ; WSAPROTOCOL_INFOA* optional
    , "Ptr", lpszAddressString   ; LPSTR out
    , "Ptr", lpdwAddressStringLength   ; DWORD* in/out
    , "Int")   ; return: INT

●WSAAddressToStringA(lpsaAddress, dwAddressLength, lpProtocolInfo, lpszAddressString, lpdwAddressStringLength) = DLL("WS2_32.dll", "int WSAAddressToStringA(void*, dword, void*, char*, void*)")
# 呼び出し: WSAAddressToStringA(lpsaAddress, dwAddressLength, lpProtocolInfo, lpszAddressString, lpdwAddressStringLength)
# lpsaAddress : SOCKADDR* -> "void*"
# dwAddressLength : DWORD -> "dword"
# lpProtocolInfo : WSAPROTOCOL_INFOA* optional -> "void*"
# lpszAddressString : LPSTR out -> "char*"
# lpdwAddressStringLength : DWORD* in/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)。