"Jack" <SonomaJack@newsgroups.nospam> schree
f in bericht news:eSIcg8uyGHA.1936@TK2MSFTNGP06.phx.gbl...
>I have a WebRequest object that I use to log into a site and then post some
>XML.  In doing this I set the KeepAlive = true so that it maintains the
>connection and does operates undo the initial login.
>
> Is there a way to force this connection to close after I an done with it.
> What happens is that I may need to post the XML in several chunks due to
> size therefore I cannot set the KeepAlive to False when I post the XML and
> the way the code runs I do not know which pass is the last.
>
> What happens is that the first post works fine but subsequent posts time
> out, I assume this is due to the connection timing out.
>
> Any ideas, or a better way to do this?
>
> Jack
>

"Walter Wang [MSFT]" <waw***@online.microsoft.com> wrote in message
news:Vyt8dQ1yGHA.4220@TK2MSFTNGXA01.phx.gbl...
> Hi Jack,
>
> From your post title and first part, your question seems to "how to force
> the connection close".
>
> By default, HttpWebRequest.KeepAlive is true. So the connections should be
> reused from one request to the next. And I don't think you need to
> explicitly close the connection, just dispose the HttpWebRequest object.
>
> Also, note that the server could also be closing the connection after
> serving each request. Keep-alive can be set in the http request header,
> but
> server can decide whether or not to reuse the connection.
>
> Reusing connection is to improve performance. I don't think it's required
> to maintain the login credential. As long as you are using the same
> HttpWebRequest object, the credential should be used in subsequent
> requests.
>
> As your last question about "subsequent posts time out", I think this is
> probably because the request size limit. If your server is written in
> ASP.NET, the default maximum request size is 4MB. You can change this
> limit
> in web.config:
>
>    <system.web>
>    <httpRuntime maxRequestLength="10240" /> <!-- change to 10MB -->
>
> http://msdn2.microsoft.com/en-us/library/e1f13641.aspx
>
>    maxRequestLength:
>
>    Specifies the limit for the input stream buffering threshold, in KB.
> This limit can be used to prevent denial of service attacks that are
> caused, for example, by users posting large files to the server.
>
> Also, you can use WebClient to do the post:
> http://msdn2.microsoft.com/en-us/library/tt0f69eh.aspx
>
> If my assumption is not the case, I think a repro project would be very
> helpful for us to diagnose the issue quickly.
>
> Sincerely,
> Walter Wang (waw***@online.microsoft.com, remove 'online.')
> Microsoft Online Community Support
>
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"Walter Wang [MSFT]" <waw***@online.microsoft.com> wrote in message
news:cK5LCI$zGHA.4464@TK2MSFTNGXA01.phx.gbl...
> Hi Jack,
>
> Although you make the webrequest a global variable, but you are recreating
> it on each request by Net.WebRequest.Create(strUrl).
>
> To maintain the session after you first logged on, you need to use a
> CookieContainer to store the cookies you obtained after the first request
> to logon. For more information, see
> http://blogs.vbcity.com/drydo/archive/2005/09/27/5556.aspx
>
> Hope this helps. Please feel free to post here if anything is unclear.
>
> Regards,
> Walter Wang (waw***@online.microsoft.com, remove 'online.')
> Microsoft Online Community Support
>
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