Re: [squid-users] Proxy-Connection: Keep-Alive in POST Requests?

Hi, Amos

> Ah, well. *requiring* things beyond the RFCs (agreed compatible standards)
> is a well known cause of failure. Just ask anyone trying to use NTLM on a
> public website.

Is "multiple POST requests in a http connection using keep-alive" RFC
violation ?

--mkishi

On Wed, Sep 8, 2010 at 3:47 PM, Amos Jeffries <squid3_at_treenet.co.nz> wrote:
> On 08/09/10 17:46, Mikio Kishi wrote:
>>
>> Hi, Henrik
>>
>>> fre 2007-04-13 klockan 22:25 +0200 skrev Sebastian Weber:
>>>>
>>>> Hendrik, thank you - that solved the problem. Now, I have a new one
>>>> however:
>>>>
>>>> The client ->  proxy connection is kept alive correctly. The proxy ->
>>>> server connection, however, is not. Squid closes the connection to the
>>>> server after the client issues a second request. After that, Squid opens
>>>> a new connection to the server and sends the second request over a new
>>>> connection.
>>>
>>> For POSTs yes. This is a feature, not a bug.
>>>
>>> The reason Squid does this is because it can not be certain that the
>>> server really supports persistent connections or that it is willing to
>>> accept the request, and terminating a POST mid-way due to the server
>>> closing the connection is very bad.. because of this Squid do not reuse
>>> connections for POST requests instead opening a new connection.
>>
>> It's still a feature, right ?
>
> Mostly. We are working on HTTP/1.1 features to avoid closing them. A lot of
> servers still require it though.
>
>> On the Internet, there are some web applications which requires
>> multi post requests in a http connection...
>
> Ah, well. *requiring* things beyond the RFCs (agreed compatible standards)
> is a well known cause of failure. Just ask anyone trying to use NTLM on a
> public website.
>
> The IP layer itself requires that every application using it to communicate
> be able to cope with connections being closed early.
>
> Amos
> --
> Please be using
>  Current Stable Squid 2.7.STABLE9 or 3.1.8
>  Beta testers wanted for 3.2.0.2
>
Received on Wed Sep 08 2010 - 16:46:43 MDT