IIS - ISAPI 필터 제작하는 방법

오랜만에 ISAPI 필터를 잠깐 들여다 봤는데요. 제작 방법은 다음의 온라인 문서에서 볼 수 있습니다.

Creating Simple ISAPI Filters
; https://learn.microsoft.com/en-us/previous-versions/iis/6.0-sdk/ms525035(v=vs.90)

#define _WIN32_WINNT 0x0400

#include <windows.h>
#include <httpfilt.h>

#define BUFFER_SIZE 2048

BOOL WINAPI GetFilterVersion(PHTTP_FILTER_VERSION pVer)
{
    pVer->dwFilterVersion = HTTP_FILTER_REVISION;
    lstrcpy(pVer->lpszFilterDesc, "...desc...");
    pVer->dwFlags = SF_NOTIFY_ORDER_HIGH | SF_NOTIFY_PREPROC_HEADERS;

    return TRUE;
}

DWORD WINAPI HttpFilterProc(PHTTP_FILTER_CONTEXT pfc, DWORD NotificationType, LPVOID pvNotification )
{
    if (NotificationType == SF_NOTIFY_PREPROC_HEADERS)
    {
       // ...
    }

    return SF_STATUS_REQ_NEXT_NOTIFICATION;
}

LIBRARY "...yours..."

EXPORTS
    HttpFilterProc
    GetFilterVersion

ISAPI Filters <isapiFilters>
; https://learn.microsoft.com/en-us/iis/configuration/system.webServer/isapiFilters/

<?xml version="1.0" encoding="utf-8"?>

<configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.5" />
    <httpRuntime targetFramework="4.5" />
  </system.web>

    <system.webServer>
        <isapiFilters>
            <filter
               name="HeaderFilter"
               enabled="true"
               enableCache="false"
               path="D:\Debug\InterceptHeader.dll" />
        </isapiFilters>
    </system.webServer>

</configuration>

C:\Windows\System32\inetsrv\config\applicationHost.config

<sectionGroup name="system.webServer">
    ...[생략]...
    <section name="isapiFilters" allowDefinition="MachineToApplication" overrideModeDefault="Allow" />
    ...[생략]...

"C:\Program Files (x86)\IIS Express\AppServer\applicationhost.config"

%userprofile%\documents\iisexpress\config\applicationhost.config