使用MSXML2.ServerXMLHTTP.6.0返回錯誤的HTTP代碼

Question

我可以使用一些不符合預期的vbscript代碼的幫助。我騎自行車通過幾個網絡圖像網址，看看它們是否有效，並發現一些返回不正確的HTTP返回代碼，如下所示。

'these urls return code 403 but they are valid image urls 
url = "https://www.skymedia.co.uk/wp-content/uploads/2016/05/Sky-Sports-Mix.png" 
'url = "https://www.skymedia.ie/wp-content/uploads/sites/4/2016/01/channel-logo-tlc.png" 

'this url returns code 403 which is correct 
'url = "http://www.lyngsat-logo.com/hires/aa/astro_supersport_my.png" 

'this url returns code 200 which is correct 
'url = "http://cdn.cablefax.com/wp-content/uploads/2014/06/golf-logo.jpg" 

Set req = CreateObject("MSXML2.ServerXMLHTTP.6.0") 
req.open "GET", url, False 
req.send 

'check http status codes 
If req.Status = 200 Then httpCode = "HTTP 200 OK - " 
If req.Status = 400 Then httpCode = "HTTP 400 Bad Request - " 
If req.Status = 403 Then httpCode = "HTTP 403 Forbidden - " 
If req.Status = 404 Then httpCode = "HTTP 404 Not Found - " 

WScript.Echo httpCode & url 

任何幫助解決這個謎是非常感謝。 -Al

Answer 1

某些Web服務器可能拒絕響應某些客戶端，如MSXML。
User-Agent標頭用於標識，ServerXMLHTTP的默認類似Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)。

而是嘗試設置一個已知的User-Agent，例如Mozilla Firefox。 此外，您可以使用statusText來簡化您的代碼。

Set req = CreateObject("MSXML2.ServerXMLHTTP.6.0") 
req.open "GET", url, False 
req.SetRequestHeader "User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; rv:51.0) Gecko/20100101 Firefox/51.0" 
req.send 
httpCode = "HTTP " & req.Status & " " & req.StatusText 

WScript.Echo httpCode 

Answer 2

好吧，這個用戶代理似乎已經解決了我的問題：「我可以用與預期無法運作的一些VBScript代碼一些幫助」

User-Agent: Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+5.1)