Re: [tsvwg] [Editorial Errata Reported] RFC9260 (7387)

[Randall Stewart <[e-mail]>]

Yes this should be verified.. a cookie-echo timer is started

not a subsequent init timer... looks like a cut and paste typo :)


R

On 3/16/23 7:39 AM, RFC Errata System wrote:
> The following errata report has been submitted for RFC9260,
> "Stream Control Transmission Protocol".
>
> --------------------------------------
> You may review the report below and at:
> https://www.rfc-editor.org/errata/eid7387
>
> --------------------------------------
> Type: Editorial
> Reported by: Michael Tüxen <[e-mail]>
>
> Section: 5.2.4.1
>
> Original Text
> -------------
>     Endpoint A                                          Endpoint Z
>     <-------------- Association is established---------------------->
>     Tag=Tag_A                                             Tag=Tag_Z
>     <--------------------------------------------------------------->
>     {A crashes and restarts}
>     {app sets up an association with Z}
>     (build TCB)
>     INIT [I-Tag=Tag_A'
>           & other info]  --------\
>     (Start T1-init timer)         \
>     (Enter COOKIE-WAIT state)      \---> (find an existing TCB,
>                                           populate TieTags if needed,
>                                           compose Cookie_Z with Tie-Tags
>                                           and other info)
>                                     /--- INIT ACK [Veri Tag=Tag_A',
>                                    /               I-Tag=Tag_Z',
>     (Cancel T1-init timer) <------/                Cookie_Z]
>                                          (leave original TCB in place)
>     COOKIE ECHO [Veri=Tag_Z',
>                  Cookie_Z]-------\
>     (Start T1-init timer)         \
>     (Enter COOKIE-ECHOED state)    \---> (Find existing association,
>                                           Tie-Tags in Cookie_Z match
>                                           Tie-Tags in TCB,
>                                           Tags do not match, i.e.,
>                                           case X X M M above,
>                                           Announce Restart to ULP
>                                           and reset association).
>                                    /---- COOKIE ACK
>     (Cancel T1-init timer, <------/
>      Enter ESTABLISHED state)
>     {app sends 1st user data; strm 0}
>     DATA [TSN=Initial TSN_A
>         Strm=0,Seq=0 & user data]--\
>     (Start T3-rtx timer)            \
>                                      \->
>                                   /--- SACK [TSN Ack=init TSN_A,Block=0]
>     (Cancel T3-rtx timer) <------/
>
>
> Corrected Text
> --------------
>     Endpoint A                                          Endpoint Z
>     <-------------- Association is established---------------------->
>     Tag=Tag_A                                             Tag=Tag_Z
>     <--------------------------------------------------------------->
>     {A crashes and restarts}
>     {app sets up an association with Z}
>     (build TCB)
>     INIT [I-Tag=Tag_A'
>           & other info]  --------\
>     (Start T1-init timer)         \
>     (Enter COOKIE-WAIT state)      \---> (find an existing TCB,
>                                           populate TieTags if needed,
>                                           compose Cookie_Z with Tie-Tags
>                                           and other info)
>                                     /--- INIT ACK [Veri Tag=Tag_A',
>                                    /               I-Tag=Tag_Z',
>     (Cancel T1-init timer) <------/                Cookie_Z]
>                                          (leave original TCB in place)
>     COOKIE ECHO [Veri=Tag_Z',
>                  Cookie_Z]-------\
>     (Start T1-cookie timer)       \
>     (Enter COOKIE-ECHOED state)    \---> (Find existing association,
>                                           Tie-Tags in Cookie_Z match
>                                           Tie-Tags in TCB,
>                                           Tags do not match, i.e.,
>                                           case X X M M above,
>                                           Announce Restart to ULP
>                                           and reset association).
>                                    /---- COOKIE ACK
>     (Cancel T1-cookie timer, <----/
>      Enter ESTABLISHED state)
>     {app sends 1st user data; strm 0}
>     DATA [TSN=Initial TSN_A
>         Strm=0,Seq=0 & user data]--\
>     (Start T3-rtx timer)            \
>                                      \->
>                                   /--- SACK [TSN Ack=init TSN_A,Block=0]
>     (Cancel T3-rtx timer) <------/
>
>
> Notes
> -----
> A packet containing an COOKIE-ECHO chunk is protected against loss by the T1-cookie timer, not the T1-init timer.
>
> Instructions:
> -------------
> This erratum is currently posted as "Reported". If necessary, please
> use "Reply All" to discuss whether it should be verified or
> rejected. When a decision is reached, the verifying party
> can log in to change the status and edit the report, if necessary.
>
> --------------------------------------
> RFC9260 (draft-ietf-tsvwg-rfc4960-bis-19)
> --------------------------------------
> Title               : Stream Control Transmission Protocol
> Publication Date    : June 2022
> Author(s)           : R. Stewart, M. Tüxen, K. Nielsen
> Category            : PROPOSED STANDARD
> Source              : Transport Area Working Group
> Area                : Transport
> Stream              : IETF
> Verifying Party     : IESG