TcpClient错误 - 线程正在中止

Question

在我的ASP.NET（VB）项目中，使用XML从远程服务器获取TcpClient响应时遇到错误。错误是Thread was being aborted.我面临错误的代码如下所示。

Private Function GetCMSAPIXMLResp(ByVal strReqXml As String, ByVal strAPIIpAddr As String, ByVal strAPIPort As String) As String

Dim strRespXml As String = String.Empty

Try
    objClientSocket = New TcpClient()
    objClientSocket.Connect(strAPIIpAddr, strAPIPort)

    If objClientSocket.Connected = True Then
        objNetStrm = objClientSocket.GetStream()
        Dim btOutStrm() As Byte = System.Text.Encoding.ASCII.GetBytes(strReqXml)
        objNetStrm.Write(btOutStrm, 0, btOutStrm.Length)
        objNetStrm.Flush()

        If objNetStrm.CanRead Then
            Dim lngBuffSize As Long = CLng(objClientSocket.ReceiveBufferSize)
            Dim btInStream(lngBuffSize) As Byte
            strbldRespXml = New StringBuilder()
            Dim iNoBytesRead As Integer = 0
            Do
                iNoBytesRead = objNetStrm.Read(btInStream, 0, btInStream.Length)
                strbldRespXml.AppendFormat("{0}", System.Text.Encoding.ASCII.GetString(btInStream, 0, iNoBytesRead))
            Loop While objNetStrm.DataAvailable

            strRespXml = Convert.ToString(strbldRespXml)
            strRespXml = strRespXml.Replace(vbCrLf, vbNullString)
        Else
            lblError.Text = "Unable to read"
        End If
    Else
        lblError.Text = "Unable to connect with remote server"

    End If
Catch ex As Exception
    Throw
Finally
    objClientSocket = Nothing
    objNetStrm = Nothing
    strbldRespXml = Nothing
End Try

Return strRespXml
End Function

实际上，我只是想知道错误在什么时候得到以及为什么。

注意：端口打开已完成，当我ping和telnet到远程服务器时，获得正响应。