FIX: Internet Transfer Control Using Username and Password

• Microsoft Visual Basic Learning, Professional, and Enterprise Editions 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:

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

   ARTICLE-ID: Q175450
   TITLE     : 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

   ARTICLE-ID: Q173265
   TITLE     : BUG: Internet Transfer Control (SP2) Username and Password

   ARTICLE ID: Q173264
   TITLE     : HOWTO: Internet Transfer Control Using Username and Password

Keywords          : vb5all VBKBAX VBKBAXInet VBKBComp VBKBCtrl VBKBInet VS97FixlistSP3 VB5FixListSP3
Technology        : kbInetDev
Version           : WINDOWS:5.0
Platform          : WINDOWS
Issue type        : kbbug
Solution Type     : kbfix kbservicepack