[SIPForum-techwg] SIPConnect 1.1- Microsoft proposalandadditional requirements- TCP

[Joanne McMillen]

Agree,

connection-reuse and keep-alive mechanisms are issues today -  as is failure handling
and they should be addressed...

Joanne
  ----- Original Message ----- 
  From: Hadriel Kaplan 
  To: Francois Audet ; Kaushik V Shah 
  Cc: techwg at sipforum.org ; Russell Bennett 
  Sent: Friday, May 16, 2008 10:53 AM
  Subject: Re: [SIPForum-techwg] SIPConnect 1.1- Microsoft proposalandadditional requirements- TCP



  Actually I think we need to do both, to some degree.  There *are* interop issues in "existing practice", because there are no common profiles documented in any standard I know of which are specific enough to avoid some of the interop issues.  Today that means a lot of configuration may be needed between the service provider and enterprise, and testing, which is delaying bring-up quite a bit.  Even for the SIP-Connect 1.0, we've found different "interpretations".

  And ultimately we'll want SIP requests from a SIP-Connect 1.1 interface to be successfully routable everywhere.  That won't impact UDP vs. TCP obviously, but for example if someone were to say "we should support S/MIME", I think we'd have to take existing practice into account. ;)

  BTW, we should actually specify some details about TCP usage, because even for that there is a disparity in implementations for some details. (e.g., connect-reuse behavior, keep-alive mechanism, failure handling)

  -hadriel

  > -----Original Message-----
  > From: techwg-bounces at sipforum.org [mailto:techwg-bounces at sipforum.org] On
  > Behalf Of Francois Audet
  >
  > Again, our goal is not to document existing practice. There is no point
  > in doing this.
  >
  > There are a number of well-known reasons why we should be encouraging
  > people to use
  > TCP.
  >
  > TCP cannot be a MAY.
  >

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