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Send PDU Session Reject when PDU session fails before SMF procedure is started

Stefan Spettel requested to merge fix_pdu_reject_no_ips into develop

Changes

  • Assign AMF address from config or from notification URL also for the case that PDU session establishment failed.

Flow

AMF -> SMF: PDU Session Establishment Request
AMF <- SMF: 201 Created
AMF <- SMF: N1N2 Message Transfer: PDU Session Establishment Reject
AMF -> SMF: 200 OK

See also fix_pdu_session_reject.pcapng

Discussion

I had a discussion with @tien-thinh.nguyen and I think we could/should follow the route that we do not send N1N2 message transfer (see also TODO in code). We can directly reply with 403 or 500 (could be discussed)

Solves Issue #25 (closed)

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