5  St protocol  Word‑p. 10

5.1  Introduction

5.2  Transport layer

5.3  Application delivery layer

5.3.1  Methods  Word‑p. 11

5.3.2  Resources and URI design

5.3.3  HTTP request/response formats  Word‑p. 12

5.3.3.1  General

5.3.3.2  POST /stapplication/sessions  Word‑p. 13

5.3.3.3  PUT /stapplication/sessions/{stsessionid}  Word‑p. 15

5.3.3.4  PATCH /stapplication/sessions/{stsessionid}  Word‑p. 16

5.3.3.5  DELETE /stapplication/sessions/{stsessionid}  Word‑p. 17

5.3.3.6  GET /stapplication/sessions/{stsessionid}  Word‑p. 18

5.3.3.7  POST /{notificationbaseurl}/{stsessionid}  Word‑p. 19

5.3.4  St session ID  Word‑p. 20

5.3.5  HTTP status codes  Word‑p. 21

5.3.6  Feature negotiation  Word‑p. 22

5.3.6.1  General

5.3.7  HTTP custom headers

5.3.7.1  3gpp-Optional-Features

5.3.7.2  3gpp-Required-Features

5.3.7.3  3gpp-Accepted-Features  Word‑p. 23

5.3.7.4  3gpp-Notification-Base-URL

5.4  Specific application communication

5.4.1  General

5.4.2  Content type

5.4.3  JSON session fields

5.4.3.1  General

5.4.3.2  session-id  Word‑p. 24

5.4.3.3  ue-ipv4

5.4.3.4  ue-ipv6-prefix

5.4.3.5  tsrules

5.4.3.6  ts-rule-name  Word‑p. 25

5.4.3.7  precedence

5.4.3.8  tdf-application-identifier

5.4.3.9  flow-information

5.4.3.10  flow-description  Word‑p. 26

5.4.3.11  tos-traffic-class

5.4.3.12  security-parameter-index

5.4.3.13  flow-label

5.4.3.14  flow-direction

5.4.3.15  ts-policy-identifier-dl

5.4.3.16  ts-policy-identifier-ul

5.4.3.17  predefined-tsrules

5.4.3.18  predefined-group-of-tsrules  Word‑p. 27

5.4.3.19  ts-rule-base-name

5.4.3.20  called-station-id

5.4.4  JSON errors and informational response fields

5.4.4.1  General

5.4.4.2  errors  Word‑p. 28

5.4.4.3  error-type

5.4.4.4  error-message

5.4.4.5  error-tag

5.4.4.6  error-path

5.4.4.7  error-info

5.4.4.6a  success-message  Word‑p. 29

5.4.4.7a  success-path

5.4.4.8  success-info

5.4.5  JSON report fields

5.4.5.1  General

5.4.5.2  ts-rule-reports

5.4.5.3  resource-paths  Word‑p. 30

5.4.5.4  rule-status

5.4.5.5  rule-failure-code

5.4.6  JSON notification fields  Word‑p. 31

5.4.6.1  General

5.4.6.2  notifications

5.4.6.3  notification-type

5.4.6.4  notification-message  Word‑p. 32

5.4.6.5  notification-tag

5.4.6.6  notification-info

5.5  TSSF discovery

6  Secure communication

A  Call Flows

B (Normative)  JSON Schema  Word‑p. 35

B.1  Session body schema

B.2  Error and Informational response schema  Word‑p. 37

B.3  Report schema  Word‑p. 39

B.4  Notification schema  Word‑p. 40

C  Change history  Word‑p. 42

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