Re: [sipcore] 4028bis: forking
Christer Holmberg <christer.holmberg@ericsson.com> Wed, 27 May 2020 10:16 UTC
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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: OKUMURA Shinji <ietf.shinji@gmail.com>, "sipcore@ietf.org" <sipcore@ietf.org>
Thread-Topic: 4028bis: forking
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Date: Wed, 27 May 2020 10:16:24 +0000
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Subject: Re: [sipcore] 4028bis: forking
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Hi, A proxy rejecting a request is not unique to the session-timer. If Alice receives a 422 she can send a CANCEL (if other early dialogs have been established), and then a new initial INVITE. Regards, Christer On 27/05/2020, 11.12, "OKUMURA Shinji" <ietf.shinji@gmail.com> wrote: Hi, In following scenario, (1) Alice sends INVITE. (2) Proxy1 forks INVITE to Proxy2(for Bob) and Carol. (4) Proxy2 rejects INVITE by 422. (6) Carol accepts INVITE by 200. Eventually Bob never receive INVITE. Alice Proxy1 Proxy2(->Bob) Carol |(1) INVITE | | || |SE:1800 | | || |----------->| | || | |(2) INVITE | || | |SE:1800 | || | |------------------------>| | |(3) INVITE | || | |SE:1800 | || | |===========>| || | |(4) 422 | | | |MSE:3600 | | | |<===========| | | |(5) ACK | | | |===========>| | | |(6) 200 OK | | |SE:1800 | | |<------------------------| |(7) 200 OK | | |SE:1800 | | |<-----------| | |(8) ACK | | |----------->| | | |(9) ACK | | |------------------------>| I hope that 4028bis addresses this issue. Regards, Shinji
- [sipcore] 4028bis: forking OKUMURA Shinji
- Re: [sipcore] 4028bis: forking Christer Holmberg
- Re: [sipcore] 4028bis: forking Paul Kyzivat
- Re: [sipcore] 4028bis: forking worley
- Re: [sipcore] 4028bis: forking OKUMURA Shinji
- Re: [sipcore] 4028bis: forking OKUMURA Shinji
- Re: [sipcore] 4028bis: forking OKUMURA Shinji
- Re: [sipcore] 4028bis: forking Christer Holmberg
- Re: [sipcore] 4028bis: forking worley
- Re: [sipcore] 4028bis: forking OKUMURA Shinji
- Re: [sipcore] 4028bis: forking Roman Shpount
- Re: [sipcore] 4028bis: forking OKUMURA Shinji
- Re: [sipcore] 4028bis: forking Roman Shpount
- Re: [sipcore] 4028bis: forking OKUMURA Shinji
- Re: [sipcore] 4028bis: forking Roman Shpount