'download a file through proxy' code problem

[kieran]

Hi,

I am trying to download a file from the Internet. The below code
works fine with no proxy server but I am behind a proxy server at work
and need to figure out how to include it in the code.

<code>
Dim wc As New System.Net.WebC lient
wc.DownloadFile ("http://www.google.ie/images/hp0.gif", _
"C:\inetpub\www root\bin\google .gif")
</code>

I have been looking all over google and am trying the following code
but as i am not familar with vb.net i can not get the structure right
or am not sure if this is the way to do it.
<code>
dim ProxyObject as New WebProxy= new
webProxy(Http://proxyserverIP:8080,true)
dim cred as NetworkCredenti al= new
NetworkCredenti al("User","pass word","domain")
ProxyObject.Cre dentials=cred
GlobalProxySele ction.Select=pr oxyObject
<code>
Thanks for any and all help.

[Patrick Steele [MVP]]

In article <b3************ **************@ posting.google. com>, kieran5405
@hotmail.com says...

Hi,

I am trying to download a file from the Internet. The below code
works fine with no proxy server but I am behind a proxy server at work
and need to figure out how to include it in the code.

<code>
Dim wc As New System.Net.WebC lient
wc.DownloadFile ("http://www.google.ie/images/hp0.gif", _
"C:\inetpub\www root\bin\google .gif")
</code>

I have been looking all over google and am trying the following code
but as i am not familar with vb.net i can not get the structure right
or am not sure if this is the way to do it.
<code>
dim ProxyObject as New WebProxy= new
webProxy(Http://proxyserverIP:8080,true)
dim cred as NetworkCredenti al= new
NetworkCredenti al("User","pass word","domain")
ProxyObject.Cre dentials=cred
GlobalProxySele ction.Select=pr oxyObject
<code>

I've never gove through a proxy, but the above code looks correct.

However, the WebClient class doesn't have a Proxy property but the
WebRequest class does. You may have to use the WebRequest object and
stream the data into the file yourself.

--
Patrick Steele
Microsoft .NET MVP
http://weblogs.asp.net/psteele

[kieran]

Hi Patrick,

Cheers for response.

I have been trying what you said and can get the stream to read but
can not see how to write it. I am using the following code and keep
getting the error -

"Stream was not writable."
I see from other messages it may be something to do with 'Keep-alive'
but when i put in that line, it brings back an error. Or it may be
that the write syntax of my code is wrong.

Any help greatly appreciated.
------------------------
<code>
Dim sURL As String
sURL = "http://test.com/rss.xml"

Dim wrGETURL As WebRequest
wrGETURL = WebRequest.Crea te(sURL)

Dim saByPassList() As String
Dim myProxy As New WebProxy("proxy :8080", True, saByPassList, New
NetworkCredenti al("user", "password", "_domain"))

myProxy.BypassP roxyOnLocal = True

wrGETURL.Proxy = myProxy
Dim objStream As Stream
objStream = wrGETURL.GetRes ponse.GetRespon seStream()
Dim myFileName As String = "C:\rss.xml "
Dim myFileStream As New StreamWriter(ob jStream)
myFileStream = File.CreateText (myFileName)
</code>

---------------------------------------

Patrick Steele [MVP] <pa*****@mvps.o rg> wrote in message news:<MP******* *************** **@msnews.micro soft.com>...

In article <b3************ **************@ posting.google. com>, kieran5405
@hotmail.com says...

Hi,

I am trying to download a file from the Internet. The below code
works fine with no proxy server but I am behind a proxy server at work
and need to figure out how to include it in the code.

<code>
Dim wc As New System.Net.WebC lient
wc.DownloadFile ("http://www.google.ie/images/hp0.gif", _
"C:\inetpub\www root\bin\google .gif")
</code>

I have been looking all over google and am trying the following code
but as i am not familar with vb.net i can not get the structure right
or am not sure if this is the way to do it.
<code>
dim ProxyObject as New WebProxy= new
webProxy(Http://proxyserverIP:8080,true)
dim cred as NetworkCredenti al= new
NetworkCredenti al("User","pass word","domain")
ProxyObject.Cre dentials=cred
GlobalProxySele ction.Select=pr oxyObject
<code>

I've never gove through a proxy, but the above code looks correct.

However, the WebClient class doesn't have a Proxy property but the
WebRequest class does. You may have to use the WebRequest object and
stream the data into the file yourself.

[Patrick Steele [MVP]]

In article <b3************ **************@ posting.google. com>, kieran5405
@hotmail.com says...

Hi Patrick,

Cheers for response.

I have been trying what you said and can get the stream to read but
can not see how to write it. I am using the following code and keep
getting the error -

"Stream was not writable." <code>

Dim sURL As String
sURL = "http://test.com/rss.xml"

Dim wrGETURL As WebRequest
wrGETURL = WebRequest.Crea te(sURL)

Dim saByPassList() As String
Dim myProxy As New WebProxy("proxy :8080", True, saByPassList, New
NetworkCredenti al("user", "password", "_domain"))

myProxy.BypassP roxyOnLocal = True

wrGETURL.Proxy = myProxy

Dim objStream As Stream
objStream = wrGETURL.GetRes ponse.GetRespon seStream()

Dim myFileStream As New StreamWriter(ob jStream)

I think you want to try a StreamReader instead of a StreamWriter (read
from the response stream of the webrequest).

--
Patrick Steele
Microsoft .NET MVP
http://weblogs.asp.net/psteele