From 98b316c22d96f22cac01d743994775a271b36303 Mon Sep 17 00:00:00 2001
From: Joel Wetzell <jwetzell@yahoo.com>
Date: Sat, 7 Dec 2024 13:56:56 -0600
Subject: [PATCH] add sdt disconnect and disconnecting data decoding

---
 packages/acn/src/models.ts  |  8 ++++++++
 packages/acn/src/pdu/sdt.ts | 11 +++++++++++
 2 files changed, 19 insertions(+)

diff --git a/packages/acn/src/models.ts b/packages/acn/src/models.ts
index 64432e8..3c2e858 100644
--- a/packages/acn/src/models.ts
+++ b/packages/acn/src/models.ts
@@ -130,6 +130,12 @@ export type SDTConnectRefuseData = {
   refuseCode: number;
 };
 
+export type SDTDisconnectData = SDTConnectData;
+export type SDTDisconnectingData = {
+  protocolID: number;
+  reasonCode: number;
+};
+
 export type SDTGetSessionsData = {
   componentID: string;
 };
@@ -149,6 +155,8 @@ export type SessionDataTransportPDU = {
     | SDTConnectData
     | SDTConnectAcceptData
     | SDTConnectRefuseData
+    | SDTDisconnectData
+    | SDTDisconnectingData
     | Uint8Array;
 };
 
diff --git a/packages/acn/src/pdu/sdt.ts b/packages/acn/src/pdu/sdt.ts
index 661c507..6b0c61d 100644
--- a/packages/acn/src/pdu/sdt.ts
+++ b/packages/acn/src/pdu/sdt.ts
@@ -4,6 +4,8 @@ import {
   SDTConnectAcceptData,
   SDTConnectData,
   SDTConnectRefuseData,
+  SDTDisconnectData,
+  SDTDisconnectingData,
   SDTGetSessionsData,
   SDTJoinAcceptData,
   SDTJoinData,
@@ -141,6 +143,8 @@ function decodeData(
   | SDTConnectData
   | SDTConnectAcceptData
   | SDTConnectRefuseData
+  | SDTDisconnectData
+  | SDTDisconnectingData
   | Uint8Array {
   const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
   switch (vector) {
@@ -241,6 +245,7 @@ function decodeData(
         lastMissedSequence: view.getUint32(28),
       };
     }
+    case SessionDataTransportVectors.DISCONNECT:
     case SessionDataTransportVectors.CONNECT:
     case SessionDataTransportVectors.CONNECT_ACCEPT: {
       return {
@@ -253,6 +258,12 @@ function decodeData(
         refuseCode: view.getUint8(4),
       };
     }
+    case SessionDataTransportVectors.DISCONNECTING: {
+      return {
+        protocolID: view.getUint32(0),
+        reasonCode: view.getUint8(4),
+      };
+    }
     default:
       console.error(`unhandled SDT vector: ${vector}`);
       return bytes;