WSAConnect

// WS2_32.dll
#include <windows.h>

INT WSAConnect(
    SOCKET s,
    const SOCKADDR* name,
    INT namelen,
    WSABUF* lpCallerData,   // optional
    WSABUF* lpCalleeData,   // optional
    QOS* lpSQOS,   // optional
    QOS* lpGQOS   // optional
);

<DllImport("WS2_32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WSAConnect(
    s As UIntPtr,   ' SOCKET
    name As IntPtr,   ' SOCKADDR*
    namelen As Integer,   ' INT
    lpCallerData As IntPtr,   ' WSABUF* optional
    lpCalleeData As IntPtr,   ' WSABUF* optional, out
    lpSQOS As IntPtr,   ' QOS* optional
    lpGQOS As IntPtr   ' QOS* optional
) As Integer
End Function

' s : SOCKET
' name : SOCKADDR*
' namelen : INT
' lpCallerData : WSABUF* optional
' lpCalleeData : WSABUF* optional, out
' lpSQOS : QOS* optional
' lpGQOS : QOS* optional
Declare PtrSafe Function WSAConnect Lib "ws2_32" ( _
    ByVal s As LongPtr, _
    ByVal name As LongPtr, _
    ByVal namelen As Long, _
    ByVal lpCallerData As LongPtr, _
    ByVal lpCalleeData As LongPtr, _
    ByVal lpSQOS As LongPtr, _
    ByVal lpGQOS As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

WSAConnect = ctypes.windll.ws2_32.WSAConnect
WSAConnect.restype = ctypes.c_int
WSAConnect.argtypes = [
    ctypes.c_size_t,  # s : SOCKET
    ctypes.c_void_p,  # name : SOCKADDR*
    ctypes.c_int,  # namelen : INT
    ctypes.c_void_p,  # lpCallerData : WSABUF* optional
    ctypes.c_void_p,  # lpCalleeData : WSABUF* optional, out
    ctypes.c_void_p,  # lpSQOS : QOS* optional
    ctypes.c_void_p,  # lpGQOS : QOS* optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WS2_32.dll')
WSAConnect = Fiddle::Function.new(
  lib['WSAConnect'],
  [
    Fiddle::TYPE_UINTPTR_T,  # s : SOCKET
    Fiddle::TYPE_VOIDP,  # name : SOCKADDR*
    Fiddle::TYPE_INT,  # namelen : INT
    Fiddle::TYPE_VOIDP,  # lpCallerData : WSABUF* optional
    Fiddle::TYPE_VOIDP,  # lpCalleeData : WSABUF* optional, out
    Fiddle::TYPE_VOIDP,  # lpSQOS : QOS* optional
    Fiddle::TYPE_VOIDP,  # lpGQOS : QOS* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "ws2_32")]
extern "system" {
    fn WSAConnect(
        s: usize,  // SOCKET
        name: *const SOCKADDR,  // SOCKADDR*
        namelen: i32,  // INT
        lpCallerData: *mut WSABUF,  // WSABUF* optional
        lpCalleeData: *mut WSABUF,  // WSABUF* optional, out
        lpSQOS: *mut QOS,  // QOS* optional
        lpGQOS: *mut QOS  // QOS* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WS2_32.dll", SetLastError = true)]
public static extern int WSAConnect(UIntPtr s, IntPtr name, int namelen, IntPtr lpCallerData, IntPtr lpCalleeData, IntPtr lpSQOS, IntPtr lpGQOS);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WS2_32_WSAConnect' -Namespace Win32 -PassThru
# $api::WSAConnect(s, name, namelen, lpCallerData, lpCalleeData, lpSQOS, lpGQOS)

#uselib "WS2_32.dll"
#func global WSAConnect "WSAConnect" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; WSAConnect s, varptr(name), namelen, varptr(lpCallerData), varptr(lpCalleeData), varptr(lpSQOS), varptr(lpGQOS)   ; 戻り値は stat
; s : SOCKET -> "sptr"
; name : SOCKADDR* -> "sptr"
; namelen : INT -> "sptr"
; lpCallerData : WSABUF* optional -> "sptr"
; lpCalleeData : WSABUF* optional, out -> "sptr"
; lpSQOS : QOS* optional -> "sptr"
; lpGQOS : QOS* optional -> "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 WSAConnect "WSAConnect" sptr, var, int, var, var, var, var
; res = WSAConnect(s, name, namelen, lpCallerData, lpCalleeData, lpSQOS, lpGQOS)
; s : SOCKET -> "sptr"
; name : SOCKADDR* -> "var"
; namelen : INT -> "int"
; lpCallerData : WSABUF* optional -> "var"
; lpCalleeData : WSABUF* optional, out -> "var"
; lpSQOS : QOS* optional -> "var"
; lpGQOS : QOS* optional -> "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 WSAConnect(SOCKET s, SOCKADDR* name, INT namelen, WSABUF* lpCallerData, WSABUF* lpCalleeData, QOS* lpSQOS, QOS* lpGQOS)
#uselib "WS2_32.dll"
#cfunc global WSAConnect "WSAConnect" intptr, var, int, var, var, var, var
; res = WSAConnect(s, name, namelen, lpCallerData, lpCalleeData, lpSQOS, lpGQOS)
; s : SOCKET -> "intptr"
; name : SOCKADDR* -> "var"
; namelen : INT -> "int"
; lpCallerData : WSABUF* optional -> "var"
; lpCalleeData : WSABUF* optional, out -> "var"
; lpSQOS : QOS* optional -> "var"
; lpGQOS : QOS* optional -> "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")
	procWSAConnect = ws2_32.NewProc("WSAConnect")
)

// s (SOCKET), name (SOCKADDR*), namelen (INT), lpCallerData (WSABUF* optional), lpCalleeData (WSABUF* optional, out), lpSQOS (QOS* optional), lpGQOS (QOS* optional)
r1, _, err := procWSAConnect.Call(
	uintptr(s),
	uintptr(name),
	uintptr(namelen),
	uintptr(lpCallerData),
	uintptr(lpCalleeData),
	uintptr(lpSQOS),
	uintptr(lpGQOS),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function WSAConnect(
  s: NativeUInt;   // SOCKET
  name: Pointer;   // SOCKADDR*
  namelen: Integer;   // INT
  lpCallerData: Pointer;   // WSABUF* optional
  lpCalleeData: Pointer;   // WSABUF* optional, out
  lpSQOS: Pointer;   // QOS* optional
  lpGQOS: Pointer   // QOS* optional
): Integer; stdcall;
  external 'WS2_32.dll' name 'WSAConnect';

result := DllCall("WS2_32\WSAConnect"
    , "UPtr", s   ; SOCKET
    , "Ptr", name   ; SOCKADDR*
    , "Int", namelen   ; INT
    , "Ptr", lpCallerData   ; WSABUF* optional
    , "Ptr", lpCalleeData   ; WSABUF* optional, out
    , "Ptr", lpSQOS   ; QOS* optional
    , "Ptr", lpGQOS   ; QOS* optional
    , "Int")   ; return: INT

●WSAConnect(s, name, namelen, lpCallerData, lpCalleeData, lpSQOS, lpGQOS) = DLL("WS2_32.dll", "int WSAConnect(int, void*, int, void*, void*, void*, void*)")
# 呼び出し: WSAConnect(s, name, namelen, lpCallerData, lpCalleeData, lpSQOS, lpGQOS)
# s : SOCKET -> "int"
# name : SOCKADDR* -> "void*"
# namelen : INT -> "int"
# lpCallerData : WSABUF* optional -> "void*"
# lpCalleeData : WSABUF* optional, out -> "void*"
# lpSQOS : QOS* optional -> "void*"
# lpGQOS : QOS* optional -> "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)。