module ietf-dots-robust-trans {

    yang-version 1.1;

    namespace
      "urn:ietf:params:xml:ns:yang:ietf-dots-robust-trans";

    prefix dots-robust;

    import ietf-dots-signal-channel {
      prefix dots-signal;
      reference
        "RFC 9132: Distributed Denial-of-Service Open Threat
        	  Signaling (DOTS) Signal Channel Specification";


    }
    import ietf-yang-structure-ext {
      prefix sx;
      reference
        "RFC 8791: YANG Data Structure Extensions";


    }

    organization
      "IETF DDoS Open Threat Signaling (DOTS) Working Group";

    contact
      "WG Web:   <https://datatracker.ietf.org/wg/dots/>
     WG List:  <mailto:dots@ietf.org>

     Author:   Mohamed Boucadair
               <mailto:mohamed.boucadair@orange.com>;

     Author:   Jon Shallow
               <mailto:ietf-supjps@jpshallow.com>";

    description
      "This module contains YANG definitions for the configuration
     of parameters that can be negotiated between a DOTS client
     and a DOTS server for robust block transmission.

     Copyright (c) 2023 IETF Trust and the persons identified as
     authors of the code.  All rights reserved.

     Redistribution and use in source and binary forms, with or
     without modification, is permitted pursuant to, and subject
     to the license terms contained in, the Revised BSD License
     set forth in Section 4.c of the IETF Trust's Legal Provisions
     Relating to IETF Documents
     (https://trustee.ietf.org/license-info).

     This version of this YANG module is part of RFC 9362; see the
     RFC itself for full legal notices.";

    revision "2023-02-28" {
      description "Initial revision.";
      reference
        "RFC 9362: Distributed Denial-of-Service Open Threat
        	  Signaling (DOTS) Configuration Attributes
        	  for Robust Block Transmission";

    }

    sx:augment-structure "/dots-signal:dots-signal/dots-signal:message-type/dots-signal:signal-config/dots-signal:mitigating-config";
    sx:augment-structure "/dots-signal:dots-signal/dots-signal:message-type/dots-signal:signal-config/dots-signal:idle-config";

    grouping robust-transmission-attributes {
      description
        "A set of DOTS signal channel session configuration
       parameters that are negotiated between DOTS agents when
       making use of Q-Block1 and Q-Block2 options.";
      container max-payloads {
        description
          "Indicates the maximum number of payloads that
         can be transmitted at any one time.";
        choice direction {
          description
            "Indicates the communication direction in which the
           data nodes can be included.";
          case server-to-client-only {
            description
              "These data nodes appear only in a message sent
             from the server to the client.";
            leaf max-value {
              type uint16;
              description
                "Maximum acceptable 'max-payloads' value.";
            }

            leaf min-value {
              type uint16;
              description
                "Minimum acceptable 'max-payloads' value.";
            }
          }  // case server-to-client-only
        }  // choice direction

        leaf current-value {
          type uint16;
          default "10";
          description
            "Current 'max-payloads' value.";
          reference
            "RFC 9177: Constrained Application Protocol (CoAP)
            	  Block-Wise Transfer Options Supporting
            	  Robust Transmission, Section 7.2";

        }
      }  // container max-payloads

      container non-max-retransmit {
        description
          "Indicates the maximum number of times a request
         for the retransmission of missing payloads can
         occur without a response from the remote peer.";
        choice direction {
          description
            "Indicates the communication direction in which the
           data nodes can be included.";
          case server-to-client-only {
            description
              "These data nodes appear only in a message sent
             from the server to the client.";
            leaf max-value {
              type uint16;
              description
                "Maximum acceptable 'non-max-retransmit' value.";
            }

            leaf min-value {
              type uint16;
              description
                "Minimum acceptable 'non-max-retransmit' value.";
            }
          }  // case server-to-client-only
        }  // choice direction

        leaf current-value {
          type uint16;
          default "3";
          description
            "Current 'non-max-retransmit' value.";
          reference
            "RFC 9177: Constrained Application Protocol (CoAP)
            	  Block-Wise Transfer Options Supporting
            	  Robust Transmission, Section 7.2";

        }
      }  // container non-max-retransmit

      container non-timeout {
        description
          "Indicates the maximum period of delay between
         sending sets of MAX_PAYLOADS payloads for the same
         body.";
        choice direction {
          description
            "Indicates the communication direction in which the
           data nodes can be included.";
          case server-to-client-only {
            description
              "These data nodes appear only in a message sent
             from the server to the client.";
            leaf max-value-decimal {
              type decimal64 {
                fraction-digits 2;
              }
              units "seconds";
              description
                "Maximum 'ack-timeout' value.";
            }

            leaf min-value-decimal {
              type decimal64 {
                fraction-digits 2;
              }
              units "seconds";
              description
                "Minimum 'ack-timeout' value.";
            }
          }  // case server-to-client-only
        }  // choice direction

        leaf current-value-decimal {
          type decimal64 {
            fraction-digits 2;
          }
          units "seconds";
          default "2.00";
          description
            "Current 'ack-timeout' value.";
          reference
            "RFC 9177: Constrained Application Protocol (CoAP)
            	  Block-Wise Transfer Options Supporting
            	  Robust Transmission, Section 7.2";

        }
      }  // container non-timeout

      container non-receive-timeout {
        description
          "Indicates the time to wait for a missing payload
         before requesting retransmission.";
        choice direction {
          description
            "Indicates the communication direction in which the
           data nodes can be included.";
          case server-to-client-only {
            description
              "These data nodes appear only in a message sent
             from the server to the client.";
            leaf max-value-decimal {
              type decimal64 {
                fraction-digits 2;
              }
              units "seconds";
              description
                "Maximum 'non-receive-timeout' value.";
            }

            leaf min-value-decimal {
              type decimal64 {
                fraction-digits 2;
              }
              units "seconds";
              description
                "Minimum 'non-receive-timeout' value.";
            }
          }  // case server-to-client-only
        }  // choice direction

        leaf current-value-decimal {
          type decimal64 {
            fraction-digits 2;
          }
          units "seconds";
          default "4.00";
          description
            "Current 'non-receive-timeout' value.";
          reference
            "RFC 9177: Constrained Application Protocol (CoAP)
            	  Block-Wise Transfer Options Supporting
            	  Robust Transmission, Section 7.2";

        }
      }  // container non-receive-timeout

      container non-probing-wait {
        description
          "Used to limit the potential wait needed when
         using 'probing-rate'.";
        choice direction {
          description
            "Indicates the communication direction in which the
           data nodes can be included.";
          case server-to-client-only {
            description
              "These data nodes appear only in a message sent
             from the server to the client.";
            leaf max-value-decimal {
              type decimal64 {
                fraction-digits 2;
              }
              units "seconds";
              description
                "Maximum 'non-probing-wait' value.";
            }

            leaf min-value-decimal {
              type decimal64 {
                fraction-digits 2;
              }
              units "seconds";
              description
                "Minimum 'non-probing-wait' value.";
            }
          }  // case server-to-client-only
        }  // choice direction

        leaf current-value-decimal {
          type decimal64 {
            fraction-digits 2;
          }
          units "seconds";
          description
            "Current 'non-probing-wait' value.";
          reference
            "RFC 9177: Constrained Application Protocol (CoAP)
            	  Block-Wise Transfer Options Supporting
            	  Robust Transmission, Section 7.2";

        }
      }  // container non-probing-wait

      container non-partial-timeout {
        description
          "Used for expiring partially received bodies.";
        choice direction {
          description
            "Indicates the communication direction in which the
           data nodes can be included.";
          case server-to-client-only {
            description
              "These data nodes appear only in a message sent
             from the server to the client.";
            leaf max-value-decimal {
              type decimal64 {
                fraction-digits 2;
              }
              units "seconds";
              description
                "Maximum 'non-partial-timeout' value.";
            }

            leaf min-value-decimal {
              type decimal64 {
                fraction-digits 2;
              }
              units "seconds";
              description
                "Minimum 'non-partial-timeout' value.";
            }
          }  // case server-to-client-only
        }  // choice direction

        leaf current-value-decimal {
          type decimal64 {
            fraction-digits 2;
          }
          units "seconds";
          default "247.00";
          description
            "Current 'non-partial-timeout' value.";
          reference
            "RFC 9177: Constrained Application Protocol (CoAP)
            	  Block-Wise Transfer Options Supporting
            	  Robust Transmission, Section 7.2";

        }
      }  // container non-partial-timeout
    }  // grouping robust-transmission-attributes

    augment /dots-signal:dots-signal/dots-signal:message-type/dots-signal:signal-config/dots-signal:mitigating-config {
      description
        "Indicates DOTS configuration attributes to use for
       robust transmission when a mitigation is active.";
      uses robust-transmission-attributes;
    }

    augment /dots-signal:dots-signal/dots-signal:message-type/dots-signal:signal-config/dots-signal:idle-config {
      description
        "Indicates DOTS configuration parameters to use for
       robust transmission when no mitigation is active.";
      uses robust-transmission-attributes;
    }
  }  // module ietf-dots-robust-trans