Q174835: FIX: Internet Transfer Control Using Username and Password

Article: Q174835
Product(s): Microsoft Visual Basic for Windows
Version(s): WINDOWS:5.0
Operating System(s): 
Keyword(s): kbVBp500 kbVS97sp2fix kbvbp500sp3fix
Last Modified: 11-JAN-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Visual Basic Learning Edition for Windows, version 5.0 
- Microsoft Visual Basic Professional Edition for Windows, version 5.0 
- Microsoft Visual Basic Enterprise Edition for Windows, version 5.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

The Internet Transfer Control is unable to make authenticated connections for
either the HTTP or FTP protocols. Anonymous connections still work. If you try
to specify the Username and Password, you will get the following error:

  Run-time error '35754'
  Unable to connect to remote host

CAUSE
=====

The control did not properly handle the Username and Password.

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. This bug has been fixed in Visual Studio 97 Service
Pack 3.

For more information, please see the following article in the Microsoft Knowledge
Base:

  Q170365 : INFO: Visual Studio 97 Service Packs - What, Where, and Why

For a list of the Visual Basic 5.0 bugs that were fixed in the Visual Studio 97
Service Pack 3, please see the following article in the Microsoft Knowledge
Base:

  Q175450 : INFO: Visual Basic 5.0 Fixes in Visual Studio 97 Service Pack 3

MORE INFORMATION
================

Steps to Reproduce Behavior
---------------------------

1. Start a new Standard EXE project. Form1 is added by default.

2. From the Project menu, choose Components, and select the Internet Transfer
  Control 5.0(SP2) into the project if it is not already loaded.

3. Place an Internet Transfer Control 5.0(SP2) on Form1 and add the following
  code:

        Private Sub Inet1_StateChanged(ByVal State As Integer)
         Const lCHUNKSIZE As Long = 1024
         Dim vtData As Variant ' Data variable.

         Select Case State
         ' ... Other cases not shown.
         Case icError ' 11
             ' In case of error, return ResponseCode and

        ' ResponseInfo.
             vtData = Inet1.ResponseCode & ":" & _
             Inet1.ResponseInfo

         Case icResponseCompleted  ' 12
             Dim strData As String: strData = ""
             Dim bDone As Boolean: bDone = False

             ' Get first chunk.
             vtData = Inet1.GetChunk(lCHUNKSIZE, icString)
             DoEvents

             Do While Not bDone

                 strData = strData & vtData
                 ' Get next chunk.
                 vtData = Inet1.GetChunk(lCHUNKSIZE, icString)
                 DoEvents

                 If Len(vtData) = 0 Then
                     bDone = True
                 End If
             Loop

            MsgBox strData
         End Select
        End Sub

4. Place a CommandButton (Command1) on Form1 and add the following code:

        Private Sub Command1_Click()
            Inet1.UserName = "Username"
            Inet1.Password = "Password"
            Inet1.URL = "ftp://YourFTPServer"
            Inet1.Execute , "DIR"
       End Sub

5. From the Run menu, choose Start (ALT, R, S), or press the F5 key to run the
  program. Press the Command1 button and you will see error described above.

REFERENCES
==========

  Q173265 : BUG: Internet Transfer Control (SP2) Username and Password

  Q173264 : HOWTO: Internet Transfer Control Using Username and Password

======================================================================
Keywords          : kbVBp500 kbVS97sp2fix kbvbp500sp3fix 
Technology        : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB500Search kbVBA500 kbVB500
Version           : WINDOWS:5.0
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 1986-2002.