157 lines
3.2 KiB
C++
157 lines
3.2 KiB
C++
//
|
|
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
|
|
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
|
|
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
|
|
// PARTICULAR PURPOSE.
|
|
//
|
|
// Copyright (c) Microsoft Corporation. All rights reserved
|
|
//
|
|
// This sample demonstrates how to use IXMLHttpRequest2 interface to
|
|
// asynchronously sending HTTP GET requests and receiving HTTP responses.
|
|
//
|
|
// XMLHttpRequestGet <Url>
|
|
//
|
|
// where:
|
|
//
|
|
// Url is the url for the HTTP request.
|
|
//
|
|
|
|
#include <SDKDDKVer.h>
|
|
#include <tchar.h>
|
|
#include <msxml6.h>
|
|
#include <wrl.h>
|
|
#include "XMLHttpRequest2Callback.h"
|
|
|
|
using namespace Microsoft::WRL;
|
|
|
|
VOID
|
|
Get(
|
|
_In_ PCWSTR pcwszUrl
|
|
)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
DWORD dwStatus = 0;
|
|
BOOL fAbort = TRUE;
|
|
ComPtr<IXMLHTTPRequest2> spXHR;
|
|
ComPtr<CXMLHttpRequest2Callback> spXhrCallback;
|
|
|
|
//
|
|
// Create an object of the IID_IXMLHTTPRequest2 class.
|
|
//
|
|
|
|
hr = CoCreateInstance(CLSID_FreeThreadedXMLHTTP60,
|
|
NULL,
|
|
CLSCTX_INPROC_SERVER,
|
|
IID_PPV_ARGS(&spXHR));
|
|
if (FAILED(hr))
|
|
{
|
|
goto Exit;
|
|
}
|
|
|
|
//
|
|
// Create an object of the CXMLHttpRequest2Callback class and initialize it.
|
|
//
|
|
|
|
hr = MakeAndInitialize<CXMLHttpRequest2Callback>(&spXhrCallback);
|
|
if (FAILED(hr))
|
|
{
|
|
goto Exit;
|
|
}
|
|
|
|
//
|
|
// Send a HTTP GET request.
|
|
//
|
|
|
|
hr = spXHR->Open(L"GET", // Method.
|
|
pcwszUrl, // Url.
|
|
spXhrCallback.Get(), // Callback.
|
|
NULL, // Username.
|
|
NULL, // Password.
|
|
NULL, // Proxy username.
|
|
NULL); // Proxy password.
|
|
if (FAILED(hr))
|
|
{
|
|
goto Exit;
|
|
}
|
|
|
|
//
|
|
// Send the request to the server.
|
|
//
|
|
|
|
hr = spXHR->Send(NULL, 0);
|
|
if (FAILED(hr))
|
|
{
|
|
goto Exit;
|
|
}
|
|
|
|
//
|
|
// Waiting for the completion of the request.
|
|
// Callers needing to receive completion or status events on a STA or UI
|
|
// thread must use a mechanism that will not block the threads window message
|
|
// pump. One example is by posting a window message to the STA or UI thread
|
|
// window handle.
|
|
//
|
|
|
|
hr = spXhrCallback->WaitForComplete(&dwStatus);
|
|
|
|
if (FAILED(hr))
|
|
{
|
|
goto Exit;
|
|
}
|
|
|
|
fAbort = FALSE;
|
|
|
|
Exit:
|
|
|
|
if (FAILED(hr))
|
|
{
|
|
wprintf(L"Failed, Error code = 0x%08x.\n", hr);
|
|
}
|
|
else
|
|
{
|
|
wprintf(L"Succeed, Status code = %u.\n", dwStatus);
|
|
}
|
|
|
|
if (fAbort)
|
|
{
|
|
spXHR->Abort();
|
|
}
|
|
}
|
|
|
|
int
|
|
__cdecl
|
|
wmain(
|
|
int argc,
|
|
_In_reads_(argc) WCHAR **argv
|
|
)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
BOOL fCoInit = FALSE;
|
|
|
|
if (argc != 2)
|
|
{
|
|
wprintf(L"Usage: %s <Url>\n", argv[0]);
|
|
goto Exit;
|
|
}
|
|
|
|
hr = CoInitializeEx(NULL,
|
|
COINIT_MULTITHREADED);
|
|
if (FAILED(hr))
|
|
{
|
|
goto Exit;
|
|
}
|
|
|
|
fCoInit = TRUE;
|
|
Get(argv[1]);
|
|
|
|
Exit:
|
|
|
|
if (fCoInit)
|
|
{
|
|
CoUninitialize();
|
|
fCoInit = FALSE;
|
|
}
|
|
|
|
return 0;
|
|
}
|