HttpSendResponseEntityBody

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

DWORD HttpSendResponseEntityBody(
    HANDLE RequestQueueHandle,
    ULONGLONG RequestId,
    DWORD Flags,
    WORD EntityChunkCount,   // optional
    HTTP_DATA_CHUNK* EntityChunks,   // optional
    DWORD* BytesSent,   // optional
    void* Reserved1,   // optional
    DWORD Reserved2,   // optional
    OVERLAPPED* Overlapped,   // optional
    HTTP_LOG_DATA* LogData   // optional
);

<DllImport("HTTPAPI.dll", ExactSpelling:=True)>
Public Shared Function HttpSendResponseEntityBody(
    RequestQueueHandle As IntPtr,   ' HANDLE
    RequestId As ULong,   ' ULONGLONG
    Flags As UInteger,   ' DWORD
    EntityChunkCount As UShort,   ' WORD optional
    EntityChunks As IntPtr,   ' HTTP_DATA_CHUNK* optional
    BytesSent As IntPtr,   ' DWORD* optional, out
    Reserved1 As IntPtr,   ' void* optional
    Reserved2 As UInteger,   ' DWORD optional
    Overlapped As IntPtr,   ' OVERLAPPED* optional, in/out
    LogData As IntPtr   ' HTTP_LOG_DATA* optional
) As UInteger
End Function

' RequestQueueHandle : HANDLE
' RequestId : ULONGLONG
' Flags : DWORD
' EntityChunkCount : WORD optional
' EntityChunks : HTTP_DATA_CHUNK* optional
' BytesSent : DWORD* optional, out
' Reserved1 : void* optional
' Reserved2 : DWORD optional
' Overlapped : OVERLAPPED* optional, in/out
' LogData : HTTP_LOG_DATA* optional
Declare PtrSafe Function HttpSendResponseEntityBody Lib "httpapi" ( _
    ByVal RequestQueueHandle As LongPtr, _
    ByVal RequestId As LongLong, _
    ByVal Flags As Long, _
    ByVal EntityChunkCount As Integer, _
    ByVal EntityChunks As LongPtr, _
    ByVal BytesSent As LongPtr, _
    ByVal Reserved1 As LongPtr, _
    ByVal Reserved2 As Long, _
    ByVal Overlapped As LongPtr, _
    ByVal LogData 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

HttpSendResponseEntityBody = ctypes.windll.httpapi.HttpSendResponseEntityBody
HttpSendResponseEntityBody.restype = wintypes.DWORD
HttpSendResponseEntityBody.argtypes = [
    wintypes.HANDLE,  # RequestQueueHandle : HANDLE
    ctypes.c_ulonglong,  # RequestId : ULONGLONG
    wintypes.DWORD,  # Flags : DWORD
    ctypes.c_ushort,  # EntityChunkCount : WORD optional
    ctypes.c_void_p,  # EntityChunks : HTTP_DATA_CHUNK* optional
    ctypes.POINTER(wintypes.DWORD),  # BytesSent : DWORD* optional, out
    ctypes.POINTER(None),  # Reserved1 : void* optional
    wintypes.DWORD,  # Reserved2 : DWORD optional
    ctypes.c_void_p,  # Overlapped : OVERLAPPED* optional, in/out
    ctypes.c_void_p,  # LogData : HTTP_LOG_DATA* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('HTTPAPI.dll')
HttpSendResponseEntityBody = Fiddle::Function.new(
  lib['HttpSendResponseEntityBody'],
  [
    Fiddle::TYPE_VOIDP,  # RequestQueueHandle : HANDLE
    -Fiddle::TYPE_LONG_LONG,  # RequestId : ULONGLONG
    -Fiddle::TYPE_INT,  # Flags : DWORD
    -Fiddle::TYPE_SHORT,  # EntityChunkCount : WORD optional
    Fiddle::TYPE_VOIDP,  # EntityChunks : HTTP_DATA_CHUNK* optional
    Fiddle::TYPE_VOIDP,  # BytesSent : DWORD* optional, out
    Fiddle::TYPE_VOIDP,  # Reserved1 : void* optional
    -Fiddle::TYPE_INT,  # Reserved2 : DWORD optional
    Fiddle::TYPE_VOIDP,  # Overlapped : OVERLAPPED* optional, in/out
    Fiddle::TYPE_VOIDP,  # LogData : HTTP_LOG_DATA* optional
  ],
  -Fiddle::TYPE_INT)

#[link(name = "httpapi")]
extern "system" {
    fn HttpSendResponseEntityBody(
        RequestQueueHandle: *mut core::ffi::c_void,  // HANDLE
        RequestId: u64,  // ULONGLONG
        Flags: u32,  // DWORD
        EntityChunkCount: u16,  // WORD optional
        EntityChunks: *mut HTTP_DATA_CHUNK,  // HTTP_DATA_CHUNK* optional
        BytesSent: *mut u32,  // DWORD* optional, out
        Reserved1: *mut (),  // void* optional
        Reserved2: u32,  // DWORD optional
        Overlapped: *mut OVERLAPPED,  // OVERLAPPED* optional, in/out
        LogData: *mut HTTP_LOG_DATA  // HTTP_LOG_DATA* optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("HTTPAPI.dll")]
public static extern uint HttpSendResponseEntityBody(IntPtr RequestQueueHandle, ulong RequestId, uint Flags, ushort EntityChunkCount, IntPtr EntityChunks, IntPtr BytesSent, IntPtr Reserved1, uint Reserved2, IntPtr Overlapped, IntPtr LogData);
"@
$api = Add-Type -MemberDefinition $sig -Name 'HTTPAPI_HttpSendResponseEntityBody' -Namespace Win32 -PassThru
# $api::HttpSendResponseEntityBody(RequestQueueHandle, RequestId, Flags, EntityChunkCount, EntityChunks, BytesSent, Reserved1, Reserved2, Overlapped, LogData)

#uselib "HTTPAPI.dll"
#func global HttpSendResponseEntityBody "HttpSendResponseEntityBody" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; HttpSendResponseEntityBody RequestQueueHandle, RequestId, Flags, EntityChunkCount, varptr(EntityChunks), varptr(BytesSent), Reserved1, Reserved2, varptr(Overlapped), varptr(LogData)   ; 戻り値は stat
; RequestQueueHandle : HANDLE -> "sptr"
; RequestId : ULONGLONG -> "sptr"
; Flags : DWORD -> "sptr"
; EntityChunkCount : WORD optional -> "sptr"
; EntityChunks : HTTP_DATA_CHUNK* optional -> "sptr"
; BytesSent : DWORD* optional, out -> "sptr"
; Reserved1 : void* optional -> "sptr"
; Reserved2 : DWORD optional -> "sptr"
; Overlapped : OVERLAPPED* optional, in/out -> "sptr"
; LogData : HTTP_LOG_DATA* optional -> "sptr"
; ※HSP3.7は int64 引数(64bit値渡し)に非対応です。
; ※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。

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

var (
	httpapi = windows.NewLazySystemDLL("HTTPAPI.dll")
	procHttpSendResponseEntityBody = httpapi.NewProc("HttpSendResponseEntityBody")
)

// RequestQueueHandle (HANDLE), RequestId (ULONGLONG), Flags (DWORD), EntityChunkCount (WORD optional), EntityChunks (HTTP_DATA_CHUNK* optional), BytesSent (DWORD* optional, out), Reserved1 (void* optional), Reserved2 (DWORD optional), Overlapped (OVERLAPPED* optional, in/out), LogData (HTTP_LOG_DATA* optional)
r1, _, err := procHttpSendResponseEntityBody.Call(
	uintptr(RequestQueueHandle),
	uintptr(RequestId),
	uintptr(Flags),
	uintptr(EntityChunkCount),
	uintptr(EntityChunks),
	uintptr(BytesSent),
	uintptr(Reserved1),
	uintptr(Reserved2),
	uintptr(Overlapped),
	uintptr(LogData),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function HttpSendResponseEntityBody(
  RequestQueueHandle: THandle;   // HANDLE
  RequestId: UInt64;   // ULONGLONG
  Flags: DWORD;   // DWORD
  EntityChunkCount: Word;   // WORD optional
  EntityChunks: Pointer;   // HTTP_DATA_CHUNK* optional
  BytesSent: Pointer;   // DWORD* optional, out
  Reserved1: Pointer;   // void* optional
  Reserved2: DWORD;   // DWORD optional
  Overlapped: Pointer;   // OVERLAPPED* optional, in/out
  LogData: Pointer   // HTTP_LOG_DATA* optional
): DWORD; stdcall;
  external 'HTTPAPI.dll' name 'HttpSendResponseEntityBody';

result := DllCall("HTTPAPI\HttpSendResponseEntityBody"
    , "Ptr", RequestQueueHandle   ; HANDLE
    , "Int64", RequestId   ; ULONGLONG
    , "UInt", Flags   ; DWORD
    , "UShort", EntityChunkCount   ; WORD optional
    , "Ptr", EntityChunks   ; HTTP_DATA_CHUNK* optional
    , "Ptr", BytesSent   ; DWORD* optional, out
    , "Ptr", Reserved1   ; void* optional
    , "UInt", Reserved2   ; DWORD optional
    , "Ptr", Overlapped   ; OVERLAPPED* optional, in/out
    , "Ptr", LogData   ; HTTP_LOG_DATA* optional
    , "UInt")   ; return: DWORD

●HttpSendResponseEntityBody(RequestQueueHandle, RequestId, Flags, EntityChunkCount, EntityChunks, BytesSent, Reserved1, Reserved2, Overlapped, LogData) = DLL("HTTPAPI.dll", "dword HttpSendResponseEntityBody(void*, qword, dword, int, void*, void*, void*, dword, void*, void*)")
# 呼び出し: HttpSendResponseEntityBody(RequestQueueHandle, RequestId, Flags, EntityChunkCount, EntityChunks, BytesSent, Reserved1, Reserved2, Overlapped, LogData)
# RequestQueueHandle : HANDLE -> "void*"
# RequestId : ULONGLONG -> "qword"
# Flags : DWORD -> "dword"
# EntityChunkCount : WORD optional -> "int"
# EntityChunks : HTTP_DATA_CHUNK* optional -> "void*"
# BytesSent : DWORD* optional, out -> "void*"
# Reserved1 : void* optional -> "void*"
# Reserved2 : DWORD optional -> "dword"
# Overlapped : OVERLAPPED* optional, in/out -> "void*"
# LogData : HTTP_LOG_DATA* 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)。

const std = @import("std");

extern "httpapi" fn HttpSendResponseEntityBody(
    RequestQueueHandle: ?*anyopaque, // HANDLE
    RequestId: u64, // ULONGLONG
    Flags: u32, // DWORD
    EntityChunkCount: u16, // WORD optional
    EntityChunks: [*c]HTTP_DATA_CHUNK, // HTTP_DATA_CHUNK* optional
    BytesSent: [*c]u32, // DWORD* optional, out
    Reserved1: ?*anyopaque, // void* optional
    Reserved2: u32, // DWORD optional
    Overlapped: [*c]OVERLAPPED, // OVERLAPPED* optional, in/out
    LogData: [*c]HTTP_LOG_DATA // HTTP_LOG_DATA* optional
) callconv(std.os.windows.WINAPI) u32;

proc HttpSendResponseEntityBody(
    RequestQueueHandle: pointer,  # HANDLE
    RequestId: uint64,  # ULONGLONG
    Flags: uint32,  # DWORD
    EntityChunkCount: uint16,  # WORD optional
    EntityChunks: ptr HTTP_DATA_CHUNK,  # HTTP_DATA_CHUNK* optional
    BytesSent: ptr uint32,  # DWORD* optional, out
    Reserved1: pointer,  # void* optional
    Reserved2: uint32,  # DWORD optional
    Overlapped: ptr OVERLAPPED,  # OVERLAPPED* optional, in/out
    LogData: ptr HTTP_LOG_DATA  # HTTP_LOG_DATA* optional
): uint32 {.importc: "HttpSendResponseEntityBody", stdcall, dynlib: "HTTPAPI.dll".}

pragma(lib, "httpapi");
extern(Windows)
uint HttpSendResponseEntityBody(
    void* RequestQueueHandle,   // HANDLE
    ulong RequestId,   // ULONGLONG
    uint Flags,   // DWORD
    ushort EntityChunkCount,   // WORD optional
    HTTP_DATA_CHUNK* EntityChunks,   // HTTP_DATA_CHUNK* optional
    uint* BytesSent,   // DWORD* optional, out
    void* Reserved1,   // void* optional
    uint Reserved2,   // DWORD optional
    OVERLAPPED* Overlapped,   // OVERLAPPED* optional, in/out
    HTTP_LOG_DATA* LogData   // HTTP_LOG_DATA* optional
);

ccall((:HttpSendResponseEntityBody, "HTTPAPI.dll"), stdcall, UInt32,
      (Ptr{Cvoid}, UInt64, UInt32, UInt16, Ptr{HTTP_DATA_CHUNK}, Ptr{UInt32}, Ptr{Cvoid}, UInt32, Ptr{OVERLAPPED}, Ptr{HTTP_LOG_DATA}),
      RequestQueueHandle, RequestId, Flags, EntityChunkCount, EntityChunks, BytesSent, Reserved1, Reserved2, Overlapped, LogData)
# RequestQueueHandle : HANDLE -> Ptr{Cvoid}
# RequestId : ULONGLONG -> UInt64
# Flags : DWORD -> UInt32
# EntityChunkCount : WORD optional -> UInt16
# EntityChunks : HTTP_DATA_CHUNK* optional -> Ptr{HTTP_DATA_CHUNK}
# BytesSent : DWORD* optional, out -> Ptr{UInt32}
# Reserved1 : void* optional -> Ptr{Cvoid}
# Reserved2 : DWORD optional -> UInt32
# Overlapped : OVERLAPPED* optional, in/out -> Ptr{OVERLAPPED}
# LogData : HTTP_LOG_DATA* optional -> Ptr{HTTP_LOG_DATA}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t HttpSendResponseEntityBody(
    void* RequestQueueHandle,
    uint64_t RequestId,
    uint32_t Flags,
    uint16_t EntityChunkCount,
    void* EntityChunks,
    uint32_t* BytesSent,
    void* Reserved1,
    uint32_t Reserved2,
    void* Overlapped,
    void* LogData);
]]
local httpapi = ffi.load("httpapi")
-- httpapi.HttpSendResponseEntityBody(RequestQueueHandle, RequestId, Flags, EntityChunkCount, EntityChunks, BytesSent, Reserved1, Reserved2, Overlapped, LogData)
-- RequestQueueHandle : HANDLE
-- RequestId : ULONGLONG
-- Flags : DWORD
-- EntityChunkCount : WORD optional
-- EntityChunks : HTTP_DATA_CHUNK* optional
-- BytesSent : DWORD* optional, out
-- Reserved1 : void* optional
-- Reserved2 : DWORD optional
-- Overlapped : OVERLAPPED* optional, in/out
-- LogData : HTTP_LOG_DATA* optional
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('HTTPAPI.dll');
const HttpSendResponseEntityBody = lib.func('__stdcall', 'HttpSendResponseEntityBody', 'uint32_t', ['void *', 'uint64_t', 'uint32_t', 'uint16_t', 'void *', 'uint32_t *', 'void *', 'uint32_t', 'void *', 'void *']);
// HttpSendResponseEntityBody(RequestQueueHandle, RequestId, Flags, EntityChunkCount, EntityChunks, BytesSent, Reserved1, Reserved2, Overlapped, LogData)
// RequestQueueHandle : HANDLE -> 'void *'
// RequestId : ULONGLONG -> 'uint64_t'
// Flags : DWORD -> 'uint32_t'
// EntityChunkCount : WORD optional -> 'uint16_t'
// EntityChunks : HTTP_DATA_CHUNK* optional -> 'void *'
// BytesSent : DWORD* optional, out -> 'uint32_t *'
// Reserved1 : void* optional -> 'void *'
// Reserved2 : DWORD optional -> 'uint32_t'
// Overlapped : OVERLAPPED* optional, in/out -> 'void *'
// LogData : HTTP_LOG_DATA* optional -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("HTTPAPI.dll", {
  HttpSendResponseEntityBody: { parameters: ["pointer", "u64", "u32", "u16", "pointer", "pointer", "pointer", "u32", "pointer", "pointer"], result: "u32" },
});
// lib.symbols.HttpSendResponseEntityBody(RequestQueueHandle, RequestId, Flags, EntityChunkCount, EntityChunks, BytesSent, Reserved1, Reserved2, Overlapped, LogData)
// RequestQueueHandle : HANDLE -> "pointer"
// RequestId : ULONGLONG -> "u64"
// Flags : DWORD -> "u32"
// EntityChunkCount : WORD optional -> "u16"
// EntityChunks : HTTP_DATA_CHUNK* optional -> "pointer"
// BytesSent : DWORD* optional, out -> "pointer"
// Reserved1 : void* optional -> "pointer"
// Reserved2 : DWORD optional -> "u32"
// Overlapped : OVERLAPPED* optional, in/out -> "pointer"
// LogData : HTTP_LOG_DATA* optional -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
uint32_t HttpSendResponseEntityBody(
    void* RequestQueueHandle,
    uint64_t RequestId,
    uint32_t Flags,
    uint16_t EntityChunkCount,
    void* EntityChunks,
    uint32_t* BytesSent,
    void* Reserved1,
    uint32_t Reserved2,
    void* Overlapped,
    void* LogData);
C, "HTTPAPI.dll");
// $ffi->HttpSendResponseEntityBody(RequestQueueHandle, RequestId, Flags, EntityChunkCount, EntityChunks, BytesSent, Reserved1, Reserved2, Overlapped, LogData);
// RequestQueueHandle : HANDLE
// RequestId : ULONGLONG
// Flags : DWORD
// EntityChunkCount : WORD optional
// EntityChunks : HTTP_DATA_CHUNK* optional
// BytesSent : DWORD* optional, out
// Reserved1 : void* optional
// Reserved2 : DWORD optional
// Overlapped : OVERLAPPED* optional, in/out
// LogData : HTTP_LOG_DATA* optional
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Httpapi extends StdCallLibrary {
    Httpapi INSTANCE = Native.load("httpapi", Httpapi.class);
    int HttpSendResponseEntityBody(
        Pointer RequestQueueHandle,   // HANDLE
        long RequestId,   // ULONGLONG
        int Flags,   // DWORD
        short EntityChunkCount,   // WORD optional
        Pointer EntityChunks,   // HTTP_DATA_CHUNK* optional
        IntByReference BytesSent,   // DWORD* optional, out
        Pointer Reserved1,   // void* optional
        int Reserved2,   // DWORD optional
        Pointer Overlapped,   // OVERLAPPED* optional, in/out
        Pointer LogData   // HTTP_LOG_DATA* optional
    );
}

@[Link("httpapi")]
lib LibHTTPAPI
  fun HttpSendResponseEntityBody = HttpSendResponseEntityBody(
    RequestQueueHandle : Void*,   # HANDLE
    RequestId : UInt64,   # ULONGLONG
    Flags : UInt32,   # DWORD
    EntityChunkCount : UInt16,   # WORD optional
    EntityChunks : HTTP_DATA_CHUNK*,   # HTTP_DATA_CHUNK* optional
    BytesSent : UInt32*,   # DWORD* optional, out
    Reserved1 : Void*,   # void* optional
    Reserved2 : UInt32,   # DWORD optional
    Overlapped : OVERLAPPED*,   # OVERLAPPED* optional, in/out
    LogData : HTTP_LOG_DATA*   # HTTP_LOG_DATA* optional
  ) : UInt32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef HttpSendResponseEntityBodyNative = Uint32 Function(Pointer<Void>, Uint64, Uint32, Uint16, Pointer<Void>, Pointer<Uint32>, Pointer<Void>, Uint32, Pointer<Void>, Pointer<Void>);
typedef HttpSendResponseEntityBodyDart = int Function(Pointer<Void>, int, int, int, Pointer<Void>, Pointer<Uint32>, Pointer<Void>, int, Pointer<Void>, Pointer<Void>);
final HttpSendResponseEntityBody = DynamicLibrary.open('HTTPAPI.dll')
    .lookupFunction<HttpSendResponseEntityBodyNative, HttpSendResponseEntityBodyDart>('HttpSendResponseEntityBody');
// RequestQueueHandle : HANDLE -> Pointer<Void>
// RequestId : ULONGLONG -> Uint64
// Flags : DWORD -> Uint32
// EntityChunkCount : WORD optional -> Uint16
// EntityChunks : HTTP_DATA_CHUNK* optional -> Pointer<Void>
// BytesSent : DWORD* optional, out -> Pointer<Uint32>
// Reserved1 : void* optional -> Pointer<Void>
// Reserved2 : DWORD optional -> Uint32
// Overlapped : OVERLAPPED* optional, in/out -> Pointer<Void>
// LogData : HTTP_LOG_DATA* optional -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function HttpSendResponseEntityBody(
  RequestQueueHandle: THandle;   // HANDLE
  RequestId: UInt64;   // ULONGLONG
  Flags: DWORD;   // DWORD
  EntityChunkCount: Word;   // WORD optional
  EntityChunks: Pointer;   // HTTP_DATA_CHUNK* optional
  BytesSent: Pointer;   // DWORD* optional, out
  Reserved1: Pointer;   // void* optional
  Reserved2: DWORD;   // DWORD optional
  Overlapped: Pointer;   // OVERLAPPED* optional, in/out
  LogData: Pointer   // HTTP_LOG_DATA* optional
): DWORD; stdcall;
  external 'HTTPAPI.dll' name 'HttpSendResponseEntityBody';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "HttpSendResponseEntityBody"
  c_HttpSendResponseEntityBody :: Ptr () -> Word64 -> Word32 -> Word16 -> Ptr () -> Ptr Word32 -> Ptr () -> Word32 -> Ptr () -> Ptr () -> IO Word32
-- RequestQueueHandle : HANDLE -> Ptr ()
-- RequestId : ULONGLONG -> Word64
-- Flags : DWORD -> Word32
-- EntityChunkCount : WORD optional -> Word16
-- EntityChunks : HTTP_DATA_CHUNK* optional -> Ptr ()
-- BytesSent : DWORD* optional, out -> Ptr Word32
-- Reserved1 : void* optional -> Ptr ()
-- Reserved2 : DWORD optional -> Word32
-- Overlapped : OVERLAPPED* optional, in/out -> Ptr ()
-- LogData : HTTP_LOG_DATA* optional -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let httpsendresponseentitybody =
  foreign "HttpSendResponseEntityBody"
    ((ptr void) @-> uint64_t @-> uint32_t @-> uint16_t @-> (ptr void) @-> (ptr uint32_t) @-> (ptr void) @-> uint32_t @-> (ptr void) @-> (ptr void) @-> returning uint32_t)
(* RequestQueueHandle : HANDLE -> (ptr void) *)
(* RequestId : ULONGLONG -> uint64_t *)
(* Flags : DWORD -> uint32_t *)
(* EntityChunkCount : WORD optional -> uint16_t *)
(* EntityChunks : HTTP_DATA_CHUNK* optional -> (ptr void) *)
(* BytesSent : DWORD* optional, out -> (ptr uint32_t) *)
(* Reserved1 : void* optional -> (ptr void) *)
(* Reserved2 : DWORD optional -> uint32_t *)
(* Overlapped : OVERLAPPED* optional, in/out -> (ptr void) *)
(* LogData : HTTP_LOG_DATA* optional -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library httpapi (t "HTTPAPI.dll"))
(cffi:use-foreign-library httpapi)

(cffi:defcfun ("HttpSendResponseEntityBody" http-send-response-entity-body :convention :stdcall) :uint32
  (request-queue-handle :pointer)   ; HANDLE
  (request-id :uint64)   ; ULONGLONG
  (flags :uint32)   ; DWORD
  (entity-chunk-count :uint16)   ; WORD optional
  (entity-chunks :pointer)   ; HTTP_DATA_CHUNK* optional
  (bytes-sent :pointer)   ; DWORD* optional, out
  (reserved1 :pointer)   ; void* optional
  (reserved2 :uint32)   ; DWORD optional
  (overlapped :pointer)   ; OVERLAPPED* optional, in/out
  (log-data :pointer))   ; HTTP_LOG_DATA* optional
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $HttpSendResponseEntityBody = Win32::API::More->new('HTTPAPI',
    'DWORD HttpSendResponseEntityBody(HANDLE RequestQueueHandle, UINT64 RequestId, DWORD Flags, WORD EntityChunkCount, LPVOID EntityChunks, LPVOID BytesSent, LPVOID Reserved1, DWORD Reserved2, LPVOID Overlapped, LPVOID LogData)');
# my $ret = $HttpSendResponseEntityBody->Call($RequestQueueHandle, $RequestId, $Flags, $EntityChunkCount, $EntityChunks, $BytesSent, $Reserved1, $Reserved2, $Overlapped, $LogData);
# RequestQueueHandle : HANDLE -> HANDLE
# RequestId : ULONGLONG -> UINT64
# Flags : DWORD -> DWORD
# EntityChunkCount : WORD optional -> WORD
# EntityChunks : HTTP_DATA_CHUNK* optional -> LPVOID
# BytesSent : DWORD* optional, out -> LPVOID
# Reserved1 : void* optional -> LPVOID
# Reserved2 : DWORD optional -> DWORD
# Overlapped : OVERLAPPED* optional, in/out -> LPVOID
# LogData : HTTP_LOG_DATA* optional -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。