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HttpWebRequest.KeepAlive doesn't create Connection header

Posted on 2009-05-11
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Last Modified: 2013-11-08
Hello Experts,

I'm settings HttpWebRequest.KeepAlive to true, but when I hit a website that displays my headers, the Connection header is missing.  I've tried a few "header viewer" websites, but no luck.  When set to false, I was able to see the header "connection: Close".  what could explain this bizarre behavior?
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Question by:sfun28
6 Comments
 
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Expert Comment

by:oobayly
ID: 24365584
I can't replicate the issue here. I've use an Asp.Net page to return the headers as well as Wireshark to view the actual traffic.
http://www.wireshark.com/

Can you show the code you're executing?
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Expert Comment

by:spprivate
ID: 24365586
What version of IIS are you using.
See if you have done this steps

http://technet.microsoft.com/en-us/library/cc772183(WS.10).aspx
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Author Comment

by:sfun28
ID: 24366644
I'm not using IIS.  I have a WinForm app that tries to fetch a webpage.  Right now I have it fetch a page that shows me the headers I'm sending.  Here's an example of two pages I'm verifying against:
http://www.ericgiguere.com/tools/http-header-viewer.html
http://www.ioerror.us/ip/headers

Right now I have a class that inherits from WebClient.  It overrides GetWebRequest.  Please see the code snippet below.  I've verified that _keepAlive is true.

The strange part is that "Connection: Close" IS sent when _keepAlive is false.  I'm only using other sites to verify this.  I could try wireshark to be doubly-sure.
protected override WebRequest GetWebRequest( Uri address )
        {
 
            WebRequest request = base.GetWebRequest( address );
 
           
            HttpWebRequest httpRequest = request as HttpWebRequest;
 
            if ( httpRequest != null )
            {
 
                httpRequest.KeepAlive = _keepAlive;
                httpRequest.ProtocolVersion = _protocolVersion;
                httpRequest.CookieContainer = CookieContainer;
 
            }
 
            return request;
        }

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sfun28 earned 0 total points
ID: 24772871
no response.  closing out.
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Expert Comment

by:beanqa
ID: 26548637
I have the same issue.  Was this ever resolved?
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Author Comment

by:sfun28
ID: 26549137
unfortunately not.
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