Re: [Netconf] WGLC on restconf-notif-08

"Reshad Rahman (rrahman)" <rrahman@cisco.com> Thu, 11 October 2018 14:52 UTC

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From: "Reshad Rahman (rrahman)" <rrahman@cisco.com>
To: Martin Bjorklund <mbj@tail-f.com>
CC: "netconf@ietf.org" <netconf@ietf.org>
Thread-Topic: [Netconf] WGLC on restconf-notif-08
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Date: Thu, 11 Oct 2018 14:52:14 +0000
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References: <20181010.134515.758050607192527205.mbj@tail-f.com> <C5B41C06-F491-417B-A5BB-8448C6A6DF28@cisco.com> <45636281-5A9E-4060-AB37-04FEBCF7A61D@cisco.com> <20181011.094409.63387308227444431.mbj@tail-f.com>
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Subject: Re: [Netconf] WGLC on restconf-notif-08
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Hi,

On 2018-10-11, 3:44 AM, "Martin Bjorklund" <mbj@tail-f.com> wrote:

    "Reshad Rahman (rrahman)" <rrahman@cisco.com> wrote:
    > Inline.
    > 
    > On 2018-10-10, 2:49 PM, "Netconf on behalf of Reshad Rahman (rrahman)"
    > <netconf-bounces@ietf.org on behalf of rrahman@cisco.com> wrote:
    > 
    >     Thanks for the review, inline.
    >     
    >     On 2018-10-10, 7:45 AM, "Netconf on behalf of Martin Bjorklund"
    >     <netconf-bounces@ietf.org on behalf of mbj@tail-f.com> wrote:
    >     
    > <Trimmed>
    >         
    >         o  Section 3.4
    >         
    >           The text says:
    >         
    >            An HTTP GET is then sent on a separate logical connection (b) to
    >            the
    >            URI on the publisher.
    >         
    >           I think that is also ok if the GET is sent on (a) - in the case that
    >           you don't care about being able to modify the subscription.  This
    >           should be clarified.
    >      <RR> Yes that also works, will add some text.
    > <RR2> That would also prevent the subscriber from deleting the
    > subscription. So I don't think this should be allowed, don't see the
    > benefit.
    
    The subscriber can simply close the connection to terminate.  I
    suspect this is what most implementations will do anyway.
<RR3>  Assuming it's 1 subscription per connection, yes.
   
    >           Also, "modify-subscription" may be sent on some other session.
    >     <RR> As long as from same subscriber I assume. Do we care about NAT
    >     scenarios?
    >         
    > <RR2> Why allow for modify-subscription on another session, is this
    > not an unnecessary complication?
    
    See my previous mail.  I think the current restriction is a
    complication.  Note that there are no sessions in RESTCONF.  It is
    true that the underlying HTTP connection can be kept, but this is just
    an optimization.  We can't make the RESTCONF protocol behavior depend
    on this.
<RR3> Current restriction is a complication because the publisher would have extra check?    

Regards,
Reshad.

    /martin