IIS6 not sending "Connection" header

Hi Pierre,

IIS is doing the right thing here. Per RFC2616 (the HTTP/1.1 spec), the
absence of a Connection header means that the connection will be kept alive.
If the IIS server were going to close the connection, then it would send a
"Connection: close" header in the response.

Note that HTTP/1.0 (RFC1945 if I remember right) is exactly the opposite.
The absence of a Connection header indicates that the server will close the
connection. In this case, IIS would be setting a "Connection: keep-alive"
header if it is going to keep the connection open.

Also note that the connection response headers are completely managed by
IIS. You should never add a connection header to your response, or you
introduce the possibility of breaking the response.

Thank you,
-Wade A. Hilmo,
-Microsoft

"Pierre Bru" <Pierre.Bru.TakeThisOut@spotimage.fr> wrote in message
news:#UUHJ200GHA.4016@TK2MSFTNGP02.phx.gbl...
> hi,
>
> I have ASP scripts on a Win2K3/II6 server with persistent connections
> activated.
>
> when a browser (IE6, FF1.5) sends a HTTP/1.1 request containing a
> "Connection: Keep-Alive", the server answers with a 200 answer but with
> neither "Connection: Keep-Alive" nor "Connection: Close" header (should
> be a "Connection: Close" as the answer is complete)
>
> is it to the ASP script to add the Connection header ? or is there some
> setting in IIS ?
>
> TIA,
> Pierre.
 >> Stay informed about: IIS6 not sending "Connection" header 

Anthony Jones wrote:
> "Pierre Bru" <Pierre.Bru.DeleteThis@spotimage.fr> wrote in message
> news:%23UUHJ200GHA.4016@TK2MSFTNGP02.phx.gbl...
>> hi,
>>
>> I have ASP scripts on a Win2K3/II6 server with persistent connections
>> activated.
>>
>> when a browser (IE6, FF1.5) sends a HTTP/1.1 request containing a
>> "Connection: Keep-Alive", the server answers with a 200 answer but with
>> neither "Connection: Keep-Alive" nor "Connection: Close" header (should
>> be a "Connection: Close" as the answer is complete)
>>
>
> Why do you believe that the response should include a Connection: Close
> header. What would be the point in client requesting a Keep-Alive (which is
> actually the default in http/1.1 anyway) if the server sent a Connection:
> Close after the response?

when one connect directly to the server, the browsers behave as
expected, but when one connect thru some proxy, the proxy add a
Connection: Keep-Alive into the headers and the browsers wait up to the
value of Keep-Alive header (FF1.5) or infinitely (IE6) before displaying
what the server answered

>> is it to the ASP script to add the Connection header ? or is there some
>> setting in IIS ?
>>
>> TIA,
>> Pierre.
>
>
 >> Stay informed about: IIS6 not sending "Connection" header