Re: [Stox] review: stox-im-03
Peter Saint-Andre <stpeter@stpeter.im> Wed, 25 September 2013 02:18 UTC
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Date: Tue, 24 Sep 2013 20:17:57 -0600
From: Peter Saint-Andre <stpeter@stpeter.im>
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To: Salvatore Loreto <salvatore.loreto@ericsson.com>
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Cc: "stox@ietf.org" <stox@ietf.org>
Subject: Re: [Stox] review: stox-im-03
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Here is proposed text for placement at the end of Section 4 ("Interdomain Federation") in the -core document: Because [RFC6120] specifies a binding of XMPP to TCP, a gateway from SIP to XMPP will need to support TCP as the underlying transport protocol. By contrast, as specified in [RFC3261], either TCP or UDP can be used as the underlying transport for SIP messages, and a given SIP deployment might support only UDP; therefore, a gateway from XMPP to SIP might need to communicate with a SIP service using either TCP or UDP. Peter On 9/24/13 6:40 AM, Peter Saint-Andre wrote: > Oh, and this text probably belongs in the -core document, I > think... > > On 9/24/13 6:37 AM, Salvatore Loreto wrote: >> >> Thanks Peter >> >> >> --Original message--- Sender: "Peter Saint-Andre" >> <stpeter@stpeter.im> Time: Tue Sep 24 15:35:00 EEST 2013 Cc: >> stox@ietf.org, Subject: Re: [Stox] review: stox-im-03 >> >> On 9/24/13 12:02 AM, Salvatore Loreto wrote: >>> On 9/24/13 2:45 AM, Peter Saint-Andre wrote: Hi Sal, thanks for >>> the review. >> >>> On 9/20/13 4:42 AM, Salvatore Loreto wrote: >> >>>>>> my only comments is about the fact that section 3. XMPP >>>>>> to SIP implies that the MESSAGE is always (and maybe can >>>>>> only be) delivered over a TCP connection; RFC3428 states >>>>>> >>>>>> Whenever possible, MESSAGE requests SHOULD be sent over >>>>>> transports that implement end-to-end congestion control, >>>>>> such as TCP or SCTP. However, SIP does not provide a >>>>>> mechanism to prevent a downstream hop from sending a >>>>>> request over UDP. >>>>>> >>>>>> so you can delivery it over UDP as well and that has >>>>>> also being raised in a previous thread while talking on >>>>>> the Call-ID mapping to <thread/>. Actually you will be >>>>>> forced to deliver over UDP if the SIMPLE server only >>>>>> supports UDP. >>> It's not clear to me why the XMPP-to-SIP gateway couldn't >>> communicate with the SIMPLE server over UDP. Which text in >>> Section 3 do you think implies that only TCP connections are >>> supported? >>>> there is not text at all, and that is the problem. When I >>>> read the Section 3 and the example I got the impression that >>>> I can only use TCP to forward the message on the SIP side but >>>> maybe it is only me! >> >> I doubt it is only you. :-) >> >> Because there is no such thing as XMPP over UDP, the gateway from >> SIP to XMPP will need to communicate over TCP. However, I see no >> reason why the gateway from XMPP to SIP could not be "smart" and >> send SIP messages over TCP or UDP depending on what the far SIP >> server supports. I'll work to add some clarifying text on these >> points. >> >> Peter -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.19 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJSQkfUAAoJEOoGpJErxa2pI7AP/RPh4ufdyM5wD0psc0T+e3HG zPm/JAoCbu4mlApChuj17eCWKdV7nBKkUCO94WLIHiz0fu7CHsW0f6zhxx6n/ZVy nDiLCvmP5FifzMeewPh0zV4anFuQmQX8PwauJ2jb5p11gxMok+BefCToZIlLGb60 tvqgDwfEpRL/N+4EN6tdydBBaL6r1pXHxXWgDK1qwF9t766eW1c8iPUwn51IZekd SB+Pzr3QPvU9vAYey5jNvtv5ltPhicHkA1FKfPBj/JcTcRFuY7FJy1IGP29jY2EV 4sap6CXs8IgUa/t+vnd6UWuLuh5lO/J+uBYKepSeo/pF6wF4lmc30mPwcYfyhnUl iwqhW+HHSbfEVruovhfUed2pgwa1FPWqVMn4XJEd6JR/uX/4xj+UDfZJqfBL0ZNb HnhtuiDajfkWaSDNJCqyjr2ndmpAD9ZhVOfN8QIjTuT+KVDfWUPfJzqTCpl4qHa9 zWqcd7vr0sU4BgOOjg9FvXcJUdzvXYWn55ANUZYPEZA++EbcKdBngKBlh7g75Zqp fUQeqjkBfavvd2f3Ipc5tsWXJhDdfbwEn8hWknYVxqSU5eJzfqNeIngtwPWAgGdz QAczm9/dSZAbZqxOI7eUq6pCr2Lq0oLYgchdFk7iMJgnkxyHUsU0ZDJr+JLOcoAJ GFSmrSuS2qzMzL3F/XPS =Y5pc -----END PGP SIGNATURE-----
- Re: [Stox] review: stox-im-03 Peter Saint-Andre
- Re: [Stox] review: stox-im-03 Salvatore Loreto
- Re: [Stox] review: stox-im-03 Peter Saint-Andre