rlp header should be hex string

packages/acn/src/models.ts

@@ -16,6 +16,6 @@ export type ACNPacket<PreambleType, PDUBlockType, PostambleType> = {
 
 export type RootLayerPDU = {
   vector: number;
-  header: Uint8Array;
+  header: string;
   data: Uint8Array;
 };

packages/acn/src/pdu/rlp.ts

@@ -1,4 +1,5 @@
 import { RootLayerPDU } from '../models';
+import { toHex } from '../utils';
 
 function decode(bytes: Uint8Array): RootLayerPDU {
   const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
@@ -43,7 +44,8 @@ function decode(bytes: Uint8Array): RootLayerPDU {
   const vector = view.getUint32(vectorOffset);
   const headerOffset = vectorOffset + 4;
 
-  const header = bytes.subarray(headerOffset, headerOffset + 16);
+  const header = toHex(bytes.subarray(headerOffset, headerOffset + 16));
+
   const dataOffset = headerOffset + 16;
   // NOTE(jwetzell): flags/lengthH + lengthL + lengthX + vector + header
   const dataLength = length - (1 + 1 + (lengthFlag ? 1 : 0) + 4 + 16);

packages/acn/src/utils.ts

@@ -0,0 +1,7 @@
+export function toHex(bytes: Uint8Array): string{
+    let hex = '';
+    bytes.forEach((byte)=>{
+        hex += byte.toString(16).padStart(2,'0')
+    }) 
+    return hex;
+}