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lynxis lazus has posted comments on this change by lynxis lazus. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/39254?usp=email )

Change subject: SGSN: TC_attach_gmm_attach_req_while_gmm_attach: fix test case ......................................................................

Patch Set 2:

(2 comments)

File sgsn/SGSN_Tests.ttcn:

https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/39254/comment/e1e8d923_1d258... : PS2, Line 2044: /* send out a second GMM_Attach Request.

this comment no longer matches the code, you moved the second attach above... […]

because the test case doesn't work this way anymore (or as soon libvlr is used). I'll remove case

https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/39254/comment/c442672b_3f8e1... : PS2, Line 2050: [] as_gmm_auth(umts_aka_challenge := true, expect_sai := true) {};

AFAIU the auth is exected to happen at the end of the whole alt? maybe simply move it outside to exp […]

I don't see what's the problem. The flow is something like this: -> Attach Req (tmsi unknown) <- Id Req -> Id Resp HLR: SAI -> Attach Req (2nd) The second Attach Req should be ignored by the SGSN, because it contains the same Attach Req. <- Auth Req -> Auth Resp HLR: LU/ISD <- Attach Accept -> Attach Complete