TransmitFile

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

BOOL TransmitFile(
    SOCKET hSocket,
    HANDLE hFile,
    DWORD nNumberOfBytesToWrite,
    DWORD nNumberOfBytesPerSend,
    OVERLAPPED* lpOverlapped,   // optional
    TRANSMIT_FILE_BUFFERS* lpTransmitBuffers,   // optional
    DWORD dwReserved
);

<DllImport("MSWSOCK.dll", ExactSpelling:=True)>
Public Shared Function TransmitFile(
    hSocket As UIntPtr,   ' SOCKET
    hFile As IntPtr,   ' HANDLE
    nNumberOfBytesToWrite As UInteger,   ' DWORD
    nNumberOfBytesPerSend As UInteger,   ' DWORD
    lpOverlapped As IntPtr,   ' OVERLAPPED* optional, in/out
    lpTransmitBuffers As IntPtr,   ' TRANSMIT_FILE_BUFFERS* optional
    dwReserved As UInteger   ' DWORD
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' hSocket : SOCKET
' hFile : HANDLE
' nNumberOfBytesToWrite : DWORD
' nNumberOfBytesPerSend : DWORD
' lpOverlapped : OVERLAPPED* optional, in/out
' lpTransmitBuffers : TRANSMIT_FILE_BUFFERS* optional
' dwReserved : DWORD
Declare PtrSafe Function TransmitFile Lib "mswsock" ( _
    ByVal hSocket As LongPtr, _
    ByVal hFile As LongPtr, _
    ByVal nNumberOfBytesToWrite As Long, _
    ByVal nNumberOfBytesPerSend As Long, _
    ByVal lpOverlapped As LongPtr, _
    ByVal lpTransmitBuffers As LongPtr, _
    ByVal dwReserved 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

TransmitFile = ctypes.windll.mswsock.TransmitFile
TransmitFile.restype = wintypes.BOOL
TransmitFile.argtypes = [
    ctypes.c_size_t,  # hSocket : SOCKET
    wintypes.HANDLE,  # hFile : HANDLE
    wintypes.DWORD,  # nNumberOfBytesToWrite : DWORD
    wintypes.DWORD,  # nNumberOfBytesPerSend : DWORD
    ctypes.c_void_p,  # lpOverlapped : OVERLAPPED* optional, in/out
    ctypes.c_void_p,  # lpTransmitBuffers : TRANSMIT_FILE_BUFFERS* optional
    wintypes.DWORD,  # dwReserved : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MSWSOCK.dll')
TransmitFile = Fiddle::Function.new(
  lib['TransmitFile'],
  [
    Fiddle::TYPE_UINTPTR_T,  # hSocket : SOCKET
    Fiddle::TYPE_VOIDP,  # hFile : HANDLE
    -Fiddle::TYPE_INT,  # nNumberOfBytesToWrite : DWORD
    -Fiddle::TYPE_INT,  # nNumberOfBytesPerSend : DWORD
    Fiddle::TYPE_VOIDP,  # lpOverlapped : OVERLAPPED* optional, in/out
    Fiddle::TYPE_VOIDP,  # lpTransmitBuffers : TRANSMIT_FILE_BUFFERS* optional
    -Fiddle::TYPE_INT,  # dwReserved : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "mswsock")]
extern "system" {
    fn TransmitFile(
        hSocket: usize,  // SOCKET
        hFile: *mut core::ffi::c_void,  // HANDLE
        nNumberOfBytesToWrite: u32,  // DWORD
        nNumberOfBytesPerSend: u32,  // DWORD
        lpOverlapped: *mut OVERLAPPED,  // OVERLAPPED* optional, in/out
        lpTransmitBuffers: *mut TRANSMIT_FILE_BUFFERS,  // TRANSMIT_FILE_BUFFERS* optional
        dwReserved: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("MSWSOCK.dll")]
public static extern bool TransmitFile(UIntPtr hSocket, IntPtr hFile, uint nNumberOfBytesToWrite, uint nNumberOfBytesPerSend, IntPtr lpOverlapped, IntPtr lpTransmitBuffers, uint dwReserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MSWSOCK_TransmitFile' -Namespace Win32 -PassThru
# $api::TransmitFile(hSocket, hFile, nNumberOfBytesToWrite, nNumberOfBytesPerSend, lpOverlapped, lpTransmitBuffers, dwReserved)

#uselib "MSWSOCK.dll"
#func global TransmitFile "TransmitFile" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; TransmitFile hSocket, hFile, nNumberOfBytesToWrite, nNumberOfBytesPerSend, varptr(lpOverlapped), varptr(lpTransmitBuffers), dwReserved   ; 戻り値は stat
; hSocket : SOCKET -> "sptr"
; hFile : HANDLE -> "sptr"
; nNumberOfBytesToWrite : DWORD -> "sptr"
; nNumberOfBytesPerSend : DWORD -> "sptr"
; lpOverlapped : OVERLAPPED* optional, in/out -> "sptr"
; lpTransmitBuffers : TRANSMIT_FILE_BUFFERS* optional -> "sptr"
; dwReserved : 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。

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

var (
	mswsock = windows.NewLazySystemDLL("MSWSOCK.dll")
	procTransmitFile = mswsock.NewProc("TransmitFile")
)

// hSocket (SOCKET), hFile (HANDLE), nNumberOfBytesToWrite (DWORD), nNumberOfBytesPerSend (DWORD), lpOverlapped (OVERLAPPED* optional, in/out), lpTransmitBuffers (TRANSMIT_FILE_BUFFERS* optional), dwReserved (DWORD)
r1, _, err := procTransmitFile.Call(
	uintptr(hSocket),
	uintptr(hFile),
	uintptr(nNumberOfBytesToWrite),
	uintptr(nNumberOfBytesPerSend),
	uintptr(lpOverlapped),
	uintptr(lpTransmitBuffers),
	uintptr(dwReserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function TransmitFile(
  hSocket: NativeUInt;   // SOCKET
  hFile: THandle;   // HANDLE
  nNumberOfBytesToWrite: DWORD;   // DWORD
  nNumberOfBytesPerSend: DWORD;   // DWORD
  lpOverlapped: Pointer;   // OVERLAPPED* optional, in/out
  lpTransmitBuffers: Pointer;   // TRANSMIT_FILE_BUFFERS* optional
  dwReserved: DWORD   // DWORD
): BOOL; stdcall;
  external 'MSWSOCK.dll' name 'TransmitFile';

result := DllCall("MSWSOCK\TransmitFile"
    , "UPtr", hSocket   ; SOCKET
    , "Ptr", hFile   ; HANDLE
    , "UInt", nNumberOfBytesToWrite   ; DWORD
    , "UInt", nNumberOfBytesPerSend   ; DWORD
    , "Ptr", lpOverlapped   ; OVERLAPPED* optional, in/out
    , "Ptr", lpTransmitBuffers   ; TRANSMIT_FILE_BUFFERS* optional
    , "UInt", dwReserved   ; DWORD
    , "Int")   ; return: BOOL

●TransmitFile(hSocket, hFile, nNumberOfBytesToWrite, nNumberOfBytesPerSend, lpOverlapped, lpTransmitBuffers, dwReserved) = DLL("MSWSOCK.dll", "bool TransmitFile(int, void*, dword, dword, void*, void*, dword)")
# 呼び出し: TransmitFile(hSocket, hFile, nNumberOfBytesToWrite, nNumberOfBytesPerSend, lpOverlapped, lpTransmitBuffers, dwReserved)
# hSocket : SOCKET -> "int"
# hFile : HANDLE -> "void*"
# nNumberOfBytesToWrite : DWORD -> "dword"
# nNumberOfBytesPerSend : DWORD -> "dword"
# lpOverlapped : OVERLAPPED* optional, in/out -> "void*"
# lpTransmitBuffers : TRANSMIT_FILE_BUFFERS* optional -> "void*"
# dwReserved : 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)。

const std = @import("std");

extern "mswsock" fn TransmitFile(
    hSocket: usize, // SOCKET
    hFile: ?*anyopaque, // HANDLE
    nNumberOfBytesToWrite: u32, // DWORD
    nNumberOfBytesPerSend: u32, // DWORD
    lpOverlapped: [*c]OVERLAPPED, // OVERLAPPED* optional, in/out
    lpTransmitBuffers: [*c]TRANSMIT_FILE_BUFFERS, // TRANSMIT_FILE_BUFFERS* optional
    dwReserved: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;

proc TransmitFile(
    hSocket: uint,  # SOCKET
    hFile: pointer,  # HANDLE
    nNumberOfBytesToWrite: uint32,  # DWORD
    nNumberOfBytesPerSend: uint32,  # DWORD
    lpOverlapped: ptr OVERLAPPED,  # OVERLAPPED* optional, in/out
    lpTransmitBuffers: ptr TRANSMIT_FILE_BUFFERS,  # TRANSMIT_FILE_BUFFERS* optional
    dwReserved: uint32  # DWORD
): int32 {.importc: "TransmitFile", stdcall, dynlib: "MSWSOCK.dll".}

pragma(lib, "mswsock");
extern(Windows)
int TransmitFile(
    size_t hSocket,   // SOCKET
    void* hFile,   // HANDLE
    uint nNumberOfBytesToWrite,   // DWORD
    uint nNumberOfBytesPerSend,   // DWORD
    OVERLAPPED* lpOverlapped,   // OVERLAPPED* optional, in/out
    TRANSMIT_FILE_BUFFERS* lpTransmitBuffers,   // TRANSMIT_FILE_BUFFERS* optional
    uint dwReserved   // DWORD
);

ccall((:TransmitFile, "MSWSOCK.dll"), stdcall, Int32,
      (Csize_t, Ptr{Cvoid}, UInt32, UInt32, Ptr{OVERLAPPED}, Ptr{TRANSMIT_FILE_BUFFERS}, UInt32),
      hSocket, hFile, nNumberOfBytesToWrite, nNumberOfBytesPerSend, lpOverlapped, lpTransmitBuffers, dwReserved)
# hSocket : SOCKET -> Csize_t
# hFile : HANDLE -> Ptr{Cvoid}
# nNumberOfBytesToWrite : DWORD -> UInt32
# nNumberOfBytesPerSend : DWORD -> UInt32
# lpOverlapped : OVERLAPPED* optional, in/out -> Ptr{OVERLAPPED}
# lpTransmitBuffers : TRANSMIT_FILE_BUFFERS* optional -> Ptr{TRANSMIT_FILE_BUFFERS}
# dwReserved : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t TransmitFile(
    uintptr_t hSocket,
    void* hFile,
    uint32_t nNumberOfBytesToWrite,
    uint32_t nNumberOfBytesPerSend,
    void* lpOverlapped,
    void* lpTransmitBuffers,
    uint32_t dwReserved);
]]
local mswsock = ffi.load("mswsock")
-- mswsock.TransmitFile(hSocket, hFile, nNumberOfBytesToWrite, nNumberOfBytesPerSend, lpOverlapped, lpTransmitBuffers, dwReserved)
-- hSocket : SOCKET
-- hFile : HANDLE
-- nNumberOfBytesToWrite : DWORD
-- nNumberOfBytesPerSend : DWORD
-- lpOverlapped : OVERLAPPED* optional, in/out
-- lpTransmitBuffers : TRANSMIT_FILE_BUFFERS* optional
-- dwReserved : DWORD
-- 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('MSWSOCK.dll');
const TransmitFile = lib.func('__stdcall', 'TransmitFile', 'int32_t', ['uintptr_t', 'void *', 'uint32_t', 'uint32_t', 'void *', 'void *', 'uint32_t']);
// TransmitFile(hSocket, hFile, nNumberOfBytesToWrite, nNumberOfBytesPerSend, lpOverlapped, lpTransmitBuffers, dwReserved)
// hSocket : SOCKET -> 'uintptr_t'
// hFile : HANDLE -> 'void *'
// nNumberOfBytesToWrite : DWORD -> 'uint32_t'
// nNumberOfBytesPerSend : DWORD -> 'uint32_t'
// lpOverlapped : OVERLAPPED* optional, in/out -> 'void *'
// lpTransmitBuffers : TRANSMIT_FILE_BUFFERS* optional -> 'void *'
// dwReserved : DWORD -> 'uint32_t'
// 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("MSWSOCK.dll", {
  TransmitFile: { parameters: ["usize", "pointer", "u32", "u32", "pointer", "pointer", "u32"], result: "i32" },
});
// lib.symbols.TransmitFile(hSocket, hFile, nNumberOfBytesToWrite, nNumberOfBytesPerSend, lpOverlapped, lpTransmitBuffers, dwReserved)
// hSocket : SOCKET -> "usize"
// hFile : HANDLE -> "pointer"
// nNumberOfBytesToWrite : DWORD -> "u32"
// nNumberOfBytesPerSend : DWORD -> "u32"
// lpOverlapped : OVERLAPPED* optional, in/out -> "pointer"
// lpTransmitBuffers : TRANSMIT_FILE_BUFFERS* optional -> "pointer"
// dwReserved : DWORD -> "u32"
// 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
int32_t TransmitFile(
    size_t hSocket,
    void* hFile,
    uint32_t nNumberOfBytesToWrite,
    uint32_t nNumberOfBytesPerSend,
    void* lpOverlapped,
    void* lpTransmitBuffers,
    uint32_t dwReserved);
C, "MSWSOCK.dll");
// $ffi->TransmitFile(hSocket, hFile, nNumberOfBytesToWrite, nNumberOfBytesPerSend, lpOverlapped, lpTransmitBuffers, dwReserved);
// hSocket : SOCKET
// hFile : HANDLE
// nNumberOfBytesToWrite : DWORD
// nNumberOfBytesPerSend : DWORD
// lpOverlapped : OVERLAPPED* optional, in/out
// lpTransmitBuffers : TRANSMIT_FILE_BUFFERS* optional
// dwReserved : DWORD
// 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 Mswsock extends StdCallLibrary {
    Mswsock INSTANCE = Native.load("mswsock", Mswsock.class);
    boolean TransmitFile(
        long hSocket,   // SOCKET
        Pointer hFile,   // HANDLE
        int nNumberOfBytesToWrite,   // DWORD
        int nNumberOfBytesPerSend,   // DWORD
        Pointer lpOverlapped,   // OVERLAPPED* optional, in/out
        Pointer lpTransmitBuffers,   // TRANSMIT_FILE_BUFFERS* optional
        int dwReserved   // DWORD
    );
}

@[Link("mswsock")]
lib LibMSWSOCK
  fun TransmitFile = TransmitFile(
    hSocket : LibC::SizeT,   # SOCKET
    hFile : Void*,   # HANDLE
    nNumberOfBytesToWrite : UInt32,   # DWORD
    nNumberOfBytesPerSend : UInt32,   # DWORD
    lpOverlapped : OVERLAPPED*,   # OVERLAPPED* optional, in/out
    lpTransmitBuffers : TRANSMIT_FILE_BUFFERS*,   # TRANSMIT_FILE_BUFFERS* optional
    dwReserved : UInt32   # DWORD
  ) : Int32
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 TransmitFileNative = Int32 Function(UintPtr, Pointer<Void>, Uint32, Uint32, Pointer<Void>, Pointer<Void>, Uint32);
typedef TransmitFileDart = int Function(int, Pointer<Void>, int, int, Pointer<Void>, Pointer<Void>, int);
final TransmitFile = DynamicLibrary.open('MSWSOCK.dll')
    .lookupFunction<TransmitFileNative, TransmitFileDart>('TransmitFile');
// hSocket : SOCKET -> UintPtr
// hFile : HANDLE -> Pointer<Void>
// nNumberOfBytesToWrite : DWORD -> Uint32
// nNumberOfBytesPerSend : DWORD -> Uint32
// lpOverlapped : OVERLAPPED* optional, in/out -> Pointer<Void>
// lpTransmitBuffers : TRANSMIT_FILE_BUFFERS* optional -> Pointer<Void>
// dwReserved : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function TransmitFile(
  hSocket: NativeUInt;   // SOCKET
  hFile: THandle;   // HANDLE
  nNumberOfBytesToWrite: DWORD;   // DWORD
  nNumberOfBytesPerSend: DWORD;   // DWORD
  lpOverlapped: Pointer;   // OVERLAPPED* optional, in/out
  lpTransmitBuffers: Pointer;   // TRANSMIT_FILE_BUFFERS* optional
  dwReserved: DWORD   // DWORD
): BOOL; stdcall;
  external 'MSWSOCK.dll' name 'TransmitFile';

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

foreign import stdcall safe "TransmitFile"
  c_TransmitFile :: CUIntPtr -> Ptr () -> Word32 -> Word32 -> Ptr () -> Ptr () -> Word32 -> IO CInt
-- hSocket : SOCKET -> CUIntPtr
-- hFile : HANDLE -> Ptr ()
-- nNumberOfBytesToWrite : DWORD -> Word32
-- nNumberOfBytesPerSend : DWORD -> Word32
-- lpOverlapped : OVERLAPPED* optional, in/out -> Ptr ()
-- lpTransmitBuffers : TRANSMIT_FILE_BUFFERS* optional -> Ptr ()
-- dwReserved : DWORD -> Word32
-- 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 transmitfile =
  foreign "TransmitFile"
    (size_t @-> (ptr void) @-> uint32_t @-> uint32_t @-> (ptr void) @-> (ptr void) @-> uint32_t @-> returning int32_t)
(* hSocket : SOCKET -> size_t *)
(* hFile : HANDLE -> (ptr void) *)
(* nNumberOfBytesToWrite : DWORD -> uint32_t *)
(* nNumberOfBytesPerSend : DWORD -> uint32_t *)
(* lpOverlapped : OVERLAPPED* optional, in/out -> (ptr void) *)
(* lpTransmitBuffers : TRANSMIT_FILE_BUFFERS* optional -> (ptr void) *)
(* dwReserved : DWORD -> uint32_t *)
(* 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 mswsock (t "MSWSOCK.dll"))
(cffi:use-foreign-library mswsock)

(cffi:defcfun ("TransmitFile" transmit-file :convention :stdcall) :int32
  (h-socket :uint64)   ; SOCKET
  (h-file :pointer)   ; HANDLE
  (n-number-of-bytes-to-write :uint32)   ; DWORD
  (n-number-of-bytes-per-send :uint32)   ; DWORD
  (lp-overlapped :pointer)   ; OVERLAPPED* optional, in/out
  (lp-transmit-buffers :pointer)   ; TRANSMIT_FILE_BUFFERS* optional
  (dw-reserved :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $TransmitFile = Win32::API::More->new('MSWSOCK',
    'BOOL TransmitFile(WPARAM hSocket, HANDLE hFile, DWORD nNumberOfBytesToWrite, DWORD nNumberOfBytesPerSend, LPVOID lpOverlapped, LPVOID lpTransmitBuffers, DWORD dwReserved)');
# my $ret = $TransmitFile->Call($hSocket, $hFile, $nNumberOfBytesToWrite, $nNumberOfBytesPerSend, $lpOverlapped, $lpTransmitBuffers, $dwReserved);
# hSocket : SOCKET -> WPARAM
# hFile : HANDLE -> HANDLE
# nNumberOfBytesToWrite : DWORD -> DWORD
# nNumberOfBytesPerSend : DWORD -> DWORD
# lpOverlapped : OVERLAPPED* optional, in/out -> LPVOID
# lpTransmitBuffers : TRANSMIT_FILE_BUFFERS* optional -> LPVOID
# dwReserved : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。