WinHttpWebSocketSend

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

DWORD WinHttpWebSocketSend(
    void* hWebSocket,
    WINHTTP_WEB_SOCKET_BUFFER_TYPE eBufferType,
    void* pvBuffer,   // optional
    DWORD dwBufferLength
);

<DllImport("WINHTTP.dll", ExactSpelling:=True)>
Public Shared Function WinHttpWebSocketSend(
    hWebSocket As IntPtr,   ' void*
    eBufferType As Integer,   ' WINHTTP_WEB_SOCKET_BUFFER_TYPE
    pvBuffer As IntPtr,   ' void* optional
    dwBufferLength As UInteger   ' DWORD
) As UInteger
End Function

' hWebSocket : void*
' eBufferType : WINHTTP_WEB_SOCKET_BUFFER_TYPE
' pvBuffer : void* optional
' dwBufferLength : DWORD
Declare PtrSafe Function WinHttpWebSocketSend Lib "winhttp" ( _
    ByVal hWebSocket As LongPtr, _
    ByVal eBufferType As Long, _
    ByVal pvBuffer As LongPtr, _
    ByVal dwBufferLength 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

WinHttpWebSocketSend = ctypes.windll.winhttp.WinHttpWebSocketSend
WinHttpWebSocketSend.restype = wintypes.DWORD
WinHttpWebSocketSend.argtypes = [
    ctypes.POINTER(None),  # hWebSocket : void*
    ctypes.c_int,  # eBufferType : WINHTTP_WEB_SOCKET_BUFFER_TYPE
    ctypes.POINTER(None),  # pvBuffer : void* optional
    wintypes.DWORD,  # dwBufferLength : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINHTTP.dll')
WinHttpWebSocketSend = Fiddle::Function.new(
  lib['WinHttpWebSocketSend'],
  [
    Fiddle::TYPE_VOIDP,  # hWebSocket : void*
    Fiddle::TYPE_INT,  # eBufferType : WINHTTP_WEB_SOCKET_BUFFER_TYPE
    Fiddle::TYPE_VOIDP,  # pvBuffer : void* optional
    -Fiddle::TYPE_INT,  # dwBufferLength : DWORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "winhttp")]
extern "system" {
    fn WinHttpWebSocketSend(
        hWebSocket: *mut (),  // void*
        eBufferType: i32,  // WINHTTP_WEB_SOCKET_BUFFER_TYPE
        pvBuffer: *mut (),  // void* optional
        dwBufferLength: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINHTTP.dll")]
public static extern uint WinHttpWebSocketSend(IntPtr hWebSocket, int eBufferType, IntPtr pvBuffer, uint dwBufferLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINHTTP_WinHttpWebSocketSend' -Namespace Win32 -PassThru
# $api::WinHttpWebSocketSend(hWebSocket, eBufferType, pvBuffer, dwBufferLength)

#uselib "WINHTTP.dll"
#func global WinHttpWebSocketSend "WinHttpWebSocketSend" sptr, sptr, sptr, sptr
; WinHttpWebSocketSend hWebSocket, eBufferType, pvBuffer, dwBufferLength   ; 戻り値は stat
; hWebSocket : void* -> "sptr"
; eBufferType : WINHTTP_WEB_SOCKET_BUFFER_TYPE -> "sptr"
; pvBuffer : void* optional -> "sptr"
; dwBufferLength : DWORD -> "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 "WINHTTP.dll"
#cfunc global WinHttpWebSocketSend "WinHttpWebSocketSend" sptr, int, sptr, int
; res = WinHttpWebSocketSend(hWebSocket, eBufferType, pvBuffer, dwBufferLength)
; hWebSocket : void* -> "sptr"
; eBufferType : WINHTTP_WEB_SOCKET_BUFFER_TYPE -> "int"
; pvBuffer : void* optional -> "sptr"
; dwBufferLength : DWORD -> "int"

; DWORD WinHttpWebSocketSend(void* hWebSocket, WINHTTP_WEB_SOCKET_BUFFER_TYPE eBufferType, void* pvBuffer, DWORD dwBufferLength)
#uselib "WINHTTP.dll"
#cfunc global WinHttpWebSocketSend "WinHttpWebSocketSend" intptr, int, intptr, int
; res = WinHttpWebSocketSend(hWebSocket, eBufferType, pvBuffer, dwBufferLength)
; hWebSocket : void* -> "intptr"
; eBufferType : WINHTTP_WEB_SOCKET_BUFFER_TYPE -> "int"
; pvBuffer : void* optional -> "intptr"
; dwBufferLength : DWORD -> "int"

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

var (
	winhttp = windows.NewLazySystemDLL("WINHTTP.dll")
	procWinHttpWebSocketSend = winhttp.NewProc("WinHttpWebSocketSend")
)

// hWebSocket (void*), eBufferType (WINHTTP_WEB_SOCKET_BUFFER_TYPE), pvBuffer (void* optional), dwBufferLength (DWORD)
r1, _, err := procWinHttpWebSocketSend.Call(
	uintptr(hWebSocket),
	uintptr(eBufferType),
	uintptr(pvBuffer),
	uintptr(dwBufferLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function WinHttpWebSocketSend(
  hWebSocket: Pointer;   // void*
  eBufferType: Integer;   // WINHTTP_WEB_SOCKET_BUFFER_TYPE
  pvBuffer: Pointer;   // void* optional
  dwBufferLength: DWORD   // DWORD
): DWORD; stdcall;
  external 'WINHTTP.dll' name 'WinHttpWebSocketSend';

result := DllCall("WINHTTP\WinHttpWebSocketSend"
    , "Ptr", hWebSocket   ; void*
    , "Int", eBufferType   ; WINHTTP_WEB_SOCKET_BUFFER_TYPE
    , "Ptr", pvBuffer   ; void* optional
    , "UInt", dwBufferLength   ; DWORD
    , "UInt")   ; return: DWORD

●WinHttpWebSocketSend(hWebSocket, eBufferType, pvBuffer, dwBufferLength) = DLL("WINHTTP.dll", "dword WinHttpWebSocketSend(void*, int, void*, dword)")
# 呼び出し: WinHttpWebSocketSend(hWebSocket, eBufferType, pvBuffer, dwBufferLength)
# hWebSocket : void* -> "void*"
# eBufferType : WINHTTP_WEB_SOCKET_BUFFER_TYPE -> "int"
# pvBuffer : void* optional -> "void*"
# dwBufferLength : DWORD -> "dword"
# 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)。