Problem with WebClient and downloading file from HTTPS site

[allend2010]

Hello:

 

I am attempting to download a file from an https site using the WebClient class. I am able to successfully plug the url with

 

the uid and pwd in the url from IE and it works fine. However when I use this same string from VB.Net I get an

 

exception:

 

"The underlying connection was closed: Unable to connect to the remote server."

 

I wasn't sure if perhaps I needed additional info for proxy settings or how to set them or if there is just something wrong

 

with my code.

 

Private Sub btnGetFile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGetFile.Click

 

Dim strURL As String = "https://myUserName:myPassword@http://www.theSite.com/files/all/test/"

Dim strFileSource As String = "TestTmp.Dat"

Dim strFileDestination As String = strFileSource

Dim strWebResource As String = strURL + strFileSource

Dim wc As New WebClient()

 

'I get the same error with or without this line.

'wc.Credentials = CredentialCache.DefaultCredentials

 

Try

wc.DownloadFile(strWebResource, strFileDestination)

Catch ex As System.Exception

lblStatus.Text = ex.Message

End Try

 

End Sub

 

Any help anybody could provide with this would be greatly apprecieated.

 

Thanks,

Al

[Derek Stone]

This is a known issue with .NET 1.0 and Internet Explorer. I don't remember if .NET 1.1 includes a fix. You'll have to check and see.

[rjonas]

I am not using an HTTPS connection, but I found that I needed to set username and password by setting Credentials, and set up a proxy, by calling System.et.GlobalProxySelection.Select.

 

Try something like this:

 

System.Net.WebClient client = new System.Net.WebClient();

System.Net.GlobalProxySelection.Select = new System.Net.WebProxy("myproxy.company.com:8080");

client.Credentials = new System.Net.NetworkCredential("username","password");

client.DownloadFile("http://passwordprotectedsite.com/file.txt","c:\\file.txt");

 

Hope this helps,

 

Richard