vb.net - SOAP 请求如果没有 try-catch-exception 直接返回错误 500 而不是 200

Question

关于我的情况，我有几个问题：

1. 如果我注释掉 try-catch-exception，服务器直接返回错误 500，说明遇到内部服务器错误。但是，我目前的回应是

Bad.SecuritySystem.Web.Services.Protocols.SoapException: The security information supplied was not valid. at WebServices.WebServiceController.Execute(HttpContext http_context, Hashtable parameters) at WebServices.Services.one_of_the_method(parameters)   

我认为只有在实现 try-catch-exception 时才会更加友好。所以我的问题是错误 500 是否意味着我的请求未被确认？

2. 服务器代码 200 是否意味着我的请求已被服务器成功接收，尽管存在凭据或值无效问题？

代码背后：

Try

    Dim Request As WebRequest
    Dim WResponse As WebResponse
    Dim DataStream As Stream
    Dim Reader As StreamReader
    Dim SoapByte() As Byte
    Dim SoapStr As String

    SoapStr = "Pretty sure this SoapStr is valid"

    SoapByte = System.Text.Encoding.UTF8.GetBytes(SoapStr)

    Request = WebRequest.Create("url goes here")
    Request.Headers.Add("SOAPAction", "same to here")

    Request.ContentType = "text/xml; charset=utf-8"
    Request.ContentLength = SoapByte.Length
    Request.Method = "POST"

    DataStream = Request.GetRequestStream()
    DataStream.Write(SoapByte, 0, SoapByte.Length)

    WResponse = Request.GetResponse()
    DataStream = WResponse.GetResponseStream()

    Reader = New StreamReader(DataStream)
    'Dim SD2Request As String = Reader.ReadToEnd()
    'Response.Write(Response)

    DataStream.Close()
    Reader.Close()
    Response.Close()

Catch ex As WebException
    Dim err As String = New System.IO.StreamReader(ex.Response.GetResponseStream()).ReadToEnd()
    Response.Write(err)
    '& "<br/>Status Code: " & Response.StatusCode & " " & Response.StatusDescription)
End Try

在谷歌浏览器中检查网络选项卡的标题时，我上面的代码显示了以下结果：

请求 URL：我的请求 URL
请求方法：GET
状态代码：200
远程地址：IP
Referrer Policy：strict-origin-when-cross-origin

谢谢你。

标签： vb.nethttpsoapwebrequest