HTTP_REQUEST_HEADERS

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct HTTP_KNOWN_HEADER
{
    public ushort RawValueLength;
    public IntPtr pRawValue;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct HTTP_REQUEST_HEADERS
{
    public ushort UnknownHeaderCount;
    public IntPtr pUnknownHeaders;
    public ushort TrailerCount;
    public IntPtr pTrailers;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 41)] public HTTP_KNOWN_HEADER[] KnownHeaders;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure HTTP_KNOWN_HEADER
    Public RawValueLength As UShort
    Public pRawValue As IntPtr
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure HTTP_REQUEST_HEADERS
    Public UnknownHeaderCount As UShort
    Public pUnknownHeaders As IntPtr
    Public TrailerCount As UShort
    Public pTrailers As IntPtr
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=41)> Public KnownHeaders() As HTTP_KNOWN_HEADER
End Structure

import ctypes
from ctypes import wintypes

class HTTP_KNOWN_HEADER(ctypes.Structure):
    _fields_ = [
        ("RawValueLength", ctypes.c_ushort),
        ("pRawValue", ctypes.c_void_p),
    ]

class HTTP_REQUEST_HEADERS(ctypes.Structure):
    _fields_ = [
        ("UnknownHeaderCount", ctypes.c_ushort),
        ("pUnknownHeaders", ctypes.c_void_p),
        ("TrailerCount", ctypes.c_ushort),
        ("pTrailers", ctypes.c_void_p),
        ("KnownHeaders", HTTP_KNOWN_HEADER * 41),
    ]

#[repr(C)]
pub struct HTTP_KNOWN_HEADER {
    pub RawValueLength: u16,
    pub pRawValue: *mut core::ffi::c_void,
}

#[repr(C)]
pub struct HTTP_REQUEST_HEADERS {
    pub UnknownHeaderCount: u16,
    pub pUnknownHeaders: *mut core::ffi::c_void,
    pub TrailerCount: u16,
    pub pTrailers: *mut core::ffi::c_void,
    pub KnownHeaders: [HTTP_KNOWN_HEADER; 41],
}

import "golang.org/x/sys/windows"

type HTTP_KNOWN_HEADER struct {
	RawValueLength uint16
	pRawValue uintptr
}

type HTTP_REQUEST_HEADERS struct {
	UnknownHeaderCount uint16
	pUnknownHeaders uintptr
	TrailerCount uint16
	pTrailers uintptr
	KnownHeaders [41]HTTP_KNOWN_HEADER
}

type
  HTTP_KNOWN_HEADER = record
    RawValueLength: Word;
    pRawValue: Pointer;
  end;

  HTTP_REQUEST_HEADERS = record
    UnknownHeaderCount: Word;
    pUnknownHeaders: Pointer;
    TrailerCount: Word;
    pTrailers: Pointer;
    KnownHeaders: array[0..40] of HTTP_KNOWN_HEADER;
  end;

const HTTP_KNOWN_HEADER = extern struct {
    RawValueLength: u16,
    pRawValue: ?*anyopaque,
};

const HTTP_REQUEST_HEADERS = extern struct {
    UnknownHeaderCount: u16,
    pUnknownHeaders: ?*anyopaque,
    TrailerCount: u16,
    pTrailers: ?*anyopaque,
    KnownHeaders: [41]HTTP_KNOWN_HEADER,
};

type
  HTTP_KNOWN_HEADER {.bycopy.} = object
    RawValueLength: uint16
    pRawValue: pointer

  HTTP_REQUEST_HEADERS {.bycopy.} = object
    UnknownHeaderCount: uint16
    pUnknownHeaders: pointer
    TrailerCount: uint16
    pTrailers: pointer
    KnownHeaders: array[41, HTTP_KNOWN_HEADER]

struct HTTP_KNOWN_HEADER
{
    ushort RawValueLength;
    void* pRawValue;
}

struct HTTP_REQUEST_HEADERS
{
    ushort UnknownHeaderCount;
    void* pUnknownHeaders;
    ushort TrailerCount;
    void* pTrailers;
    HTTP_KNOWN_HEADER[41] KnownHeaders;
}