HttpWebRequest from winform

[Brian Brown]

I have code which works as an asp.net page that posts an
xml file to web page and gets a response back.

When the the calls GetResponse() it goes into the page
it's posting to to and works fine. When it's been ported
to a winform it doesn't work on the GetResponse() call.

I think it probably needs credentials but not sure what
to use, tried a few ids w/o any luck.

The asp.net page as well as the winform are on the same
server for now but will later be on seperate servers.

Thanks,

Brian

[Jon Skeet [C# MVP]]

Re: HttpWebRequest from winform

Brian Brown <bbrown@hotmail .com> wrote:[color=blue]
> I have code which works as an asp.net page that posts an
> xml file to web page and gets a response back.
>
> When the the calls GetResponse() it goes into the page
> it's posting to to and works fine. When it's been ported
> to a winform it doesn't work on the GetResponse() call.
>
> I think it probably needs credentials but not sure what
> to use, tried a few ids w/o any luck.
>
> The asp.net page as well as the winform are on the same
> server for now but will later be on seperate servers.[/color]

Could you post a short but complete program which demonstrates the
problem?

See http://www.pobox.com/~skeet/csharp/complete.html for details of
what I mean by that.

--
Jon Skeet - <skeet@pobox.co m>

http://www.pobox.com/~skeet

If replying to the group, please do not mail me too

[Guest]

Re: HttpWebRequest from winform

Web page code that works:

Imports System.IO
Imports System.Xml
Imports System.Xml.Sche ma
Imports System.Net.Cred entialCache
Imports System.Text
Imports System.net

Public Class Class1
Private Sub SendDoc(ByRef sData As String)
Const k_send_to_url As String
= "http://localhost/Reader/Receive.aspx"

Dim request_obj As HttpWebRequest
Dim request_stream As Stream
Dim response_obj As HttpWebResponse
Dim xml_reader As XmlTextReader
Dim docobj As New XmlDocument


Try
request_obj = CType(WebReques t.Create
(k_send_to_url) , HttpWebRequest)

request_obj.Met hod = "POST"
request_obj.Con tentType = "text/xml"
request_obj.Tim eout = 999999999
request_obj.All owWriteStreamBu ffering = True

request_stream = request_obj.Get RequestStream
()

docobj.LoadXml( sData)

docobj.Save(req uest_stream)

request_stream. Close()
docobj = Nothing

response_obj = request_obj.Get Response()

xml_reader = New XmlTextReader
(response_obj.G etResponseStrea m())
docobj = New XmlDocument
docobj.Load(xml _reader)

request_obj = Nothing
request_stream = Nothing
response_obj = Nothing

Catch ex As Exception
Exit Sub
End Try

End Sub


End Class

Windows code that doesn't:


Imports System.IO
Imports System.Xml
Imports System.Xml.Sche ma
Imports System.Net.Cred entialCache
Imports System.Text
Imports System.net

Public Class Class1

Private Sub SendDoc(ByRef sData As String)
Const k_send_to_url As String
= "http://localhost/Reader/Receive.aspx"

Dim request_obj As HttpWebRequest
Dim request_stream As Stream
Dim response_obj As HttpWebResponse
Dim xml_reader As XmlTextReader
Dim docobj As New XmlDocument


Try


request_obj = CType(WebReques t.Create
(k_send_to_url) , HttpWebRequest)

request_obj.Met hod = "POST"
request_obj.Con tentType = "text/xml"
request_obj.Tim eout = 999999999
request_obj.All owWriteStreamBu ffering = True

request_stream = request_obj.Get RequestStream
()

docobj.LoadXml( sData)

docobj.Save(req uest_stream)

request_stream. Close()
docobj = Nothing

response_obj = request_obj.Get Response()

xml_reader = New XmlTextReader
(response_obj.G etResponseStrea m())
docobj = New XmlDocument
docobj.Load(xml _reader)

request_obj = Nothing
request_stream = Nothing
response_obj = Nothing

Catch ex As Exception
Exit Sub
End Try
End Sub
End Class



[color=blue]
>-----Original Message-----
>Brian Brown <bbrown@hotmail .com> wrote:[color=green]
>> I have code which works as an asp.net page that posts[/color][/color]
an[color=blue][color=green]
>> xml file to web page and gets a response back.
>>
>> When the the calls GetResponse() it goes into the page
>> it's posting to to and works fine. When it's been[/color][/color]
ported[color=blue][color=green]
>> to a winform it doesn't work on the GetResponse() call.
>>
>> I think it probably needs credentials but not sure[/color][/color]
what[color=blue][color=green]
>> to use, tried a few ids w/o any luck.
>>
>> The asp.net page as well as the winform are on the[/color][/color]
same[color=blue][color=green]
>> server for now but will later be on seperate servers.[/color]
>
>Could you post a short but complete program which[/color]
demonstrates the[color=blue]
>problem?
>
>See http://www.pobox.com/~skeet/csharp/complete.html for[/color]
details of[color=blue]
>what I mean by that.
>
>--
>Jon Skeet - <skeet@pobox.co m>
>http://www.pobox.com/~skeet
>If replying to the group, please do not mail me too
>.
>[/color]

[Jon Skeet [C# MVP]]

Re: HttpWebRequest from winform

<anonymous@disc ussions.microso ft.com> wrote:

<snip>
[color=blue]
> Windows code that doesn't:[/color]

And what happens, exactly? I notice that when you catch an exception,
you don't do anything with it - is an exception being thrown? If so,
what's the contents of the exception?

--
Jon Skeet - <skeet@pobox.co m>

http://www.pobox.com/~skeet

If replying to the group, please do not mail me too

[Guest]

Re: HttpWebRequest from winform


When the response_obj = request_obj.Get Response()

code executes if you put a breakpoint on it, it should
post the xml file to the page defined in k_send_to_url.

This happens in the web version but not in the windows
version which I intend to turn into a windows service.

No error is thrown until I try to use the result which
should be an xml document.

It has to be security somehow I guess, but can't seem to
figure out what. I tried setting credentials and it still
didn't work.

Thanks!
[color=blue]
>-----Original Message-----
> <anonymous@disc ussions.microso ft.com> wrote:
>
><snip>
>[color=green]
>> Windows code that doesn't:[/color]
>
>And what happens, exactly? I notice that when you catch[/color]
an exception,[color=blue]
>you don't do anything with it - is an exception being[/color]
thrown? If so,[color=blue]
>what's the contents of the exception?
>
>--
>Jon Skeet - <skeet@pobox.co m>
>http://www.pobox.com/~skeet
>If replying to the group, please do not mail me too
>.
>[/color]

[Jon Skeet [C# MVP]]

Re: HttpWebRequest from winform

<anonymous@disc ussions.microso ft.com> wrote:[color=blue]
> When the response_obj = request_obj.Get Response()
>
> code executes if you put a breakpoint on it, it should
> post the xml file to the page defined in k_send_to_url.
>
> This happens in the web version but not in the windows
> version which I intend to turn into a windows service.
>
> No error is thrown until I try to use the result which
> should be an xml document.
>
> It has to be security somehow I guess, but can't seem to
> figure out what. I tried setting credentials and it still
> didn't work.[/color]

You haven't said what *does* happen in the Windows version though. What
happens you you execute request_obj.Get Response()? What does it return?
Does it block? Does it throw an exception?

--
Jon Skeet - <skeet@pobox.co m>

http://www.pobox.com/~skeet

If replying to the group, please do not mail me too

[Guest]

Re: HttpWebRequest from winform

Nothing happens, no error, it doesn't go into the other
page, the error is on the next line when it expects an
xml document and there's nothing.

[color=blue]
>-----Original Message-----
> <anonymous@disc ussions.microso ft.com> wrote:[color=green]
>> When the response_obj = request_obj.Get Response()
>>
>> code executes if you put a breakpoint on it, it should
>> post the xml file to the page defined in k_send_to_url.
>>
>> This happens in the web version but not in the windows
>> version which I intend to turn into a windows service.
>>
>> No error is thrown until I try to use the result which
>> should be an xml document.
>>
>> It has to be security somehow I guess, but can't seem[/color][/color]
to[color=blue][color=green]
>> figure out what. I tried setting credentials and it[/color][/color]
still[color=blue][color=green]
>> didn't work.[/color]
>
>You haven't said what *does* happen in the Windows[/color]
version though. What[color=blue]
>happens you you execute request_obj.Get Response()? What[/color]
does it return?[color=blue]
>Does it block? Does it throw an exception?
>
>--
>Jon Skeet - <skeet@pobox.co m>
>http://www.pobox.com/~skeet
>If replying to the group, please do not mail me too
>.
>[/color]

[Jon Skeet [C# MVP]]

Re: HttpWebRequest from winform

<anonymous@disc ussions.microso ft.com> wrote:[color=blue]
> Nothing happens, no error, it doesn't go into the other
> page, the error is on the next line when it expects an
> xml document and there's nothing.[/color]

I suggest you look at the contents of the stream then, and find out
what's in there. Also look at your webserver logs to find out whether
it thinks it sent any content back - and preferably what it thought it
received, too.

--
Jon Skeet - <skeet@pobox.co m>

http://www.pobox.com/~skeet

If replying to the group, please do not mail me too

[Guest]

Re: HttpWebRequest from winform

It doesn't even go into the page. I have a breakpoint
where in the asp page it goes into the calling page, the
windows one doesn't even go into the page.

[color=blue]
>-----Original Message-----
> <anonymous@disc ussions.microso ft.com> wrote:[color=green]
>> Nothing happens, no error, it doesn't go into the[/color][/color]
other[color=blue][color=green]
>> page, the error is on the next line when it expects an
>> xml document and there's nothing.[/color]
>
>I suggest you look at the contents of the stream then,[/color]
and find out[color=blue]
>what's in there. Also look at your webserver logs to[/color]
find out whether[color=blue]
>it thinks it sent any content back - and preferably what[/color]
it thought it[color=blue]
>received, too.
>
>--
>Jon Skeet - <skeet@pobox.co m>
>http://www.pobox.com/~skeet
>If replying to the group, please do not mail me too
>.
>[/color]

[Jon Skeet [C# MVP]]

Re: HttpWebRequest from winform

<anonymous@disc ussions.microso ft.com> wrote:[color=blue]
> It doesn't even go into the page. I have a breakpoint
> where in the asp page it goes into the calling page, the
> windows one doesn't even go into the page.[/color]

And yet GetResponse returns with no exception? What status does the
returned response have?

--
Jon Skeet - <skeet@pobox.co m>

http://www.pobox.com/~skeet

If replying to the group, please do not mail me too

[Jon Skeet [C# MVP]]

Re: HttpWebRequest from winform

<anonymous@disc ussions.microso ft.com> wrote:[color=blue]
> HttpWebResponse .statusmessage = ok
>
> same for HttpWebResponse .statuscode
>
> yet it never went into the page, nor does it contain the
> returned content.[/color]

In that case, I suggest you find what it *did* go to. Does it contain
*any* content? My guess is that perhaps a proxy is getting in the way
unexpectedly.

Try using a network sniffer to find out what's going on.

--
Jon Skeet - <skeet@pobox.co m>

http://www.pobox.com/~skeet

If replying to the group, please do not mail me too