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fix DrwAck implementation

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This commit is contained in:
DavidVentura
2024-01-26 13:55:06 +01:00
parent c9e6fe4c91
commit adf0eeb18e
1 changed files with 21 additions and 2 deletions
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impl.ts
+21 -2
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@@ -130,17 +130,36 @@ const handle_Drw = (sock, dv: DataView) => {
// d1/d2 +1 (always d2?) // d1/d2 +1 (always d2?)
// 2b ack'd packets (1 for now, no coalescing) // 2b ack'd packets (1 for now, no coalescing)
// N times 2b with packet id // N times 2b with packet id
/*
*
00000000 f1 d0 00 18 d1 00 00 00 11 0a 20 11 0c 00 ff 00 .......... .....
00000010 00 00 00 00 34 54 63 4d fe 01 01 01 ....4TcM....
^^^^^^^^^^^^^^
some kind of challenge
need to send the 0x3010 command with this
but add 1 to every byte
*/
const should_be_d1 = dv.add(4).readU8(); const should_be_d1 = dv.add(4).readU8();
const m_stream = dv.add(5).readU8(); const m_stream = dv.add(5).readU8();
const pkt_id = dv.add(6).readU16(); const pkt_id = dv.add(6).readU16();
console.log("DRW", should_be_d1, m_stream, pkt_id); const start_type = dv.add(8).readU16(); // 0xa11
const cmd_id = dv.add(10).readU16(); // 0x1120
console.log("DRW", should_be_d1, m_stream, pkt_id, start_type.toString(16), cmd_id.toString(16));
if (cmd_id == 0x2011) {
challenge[0] = dv.add(0x14).readU8();
challenge[1] = dv.add(0x15).readU8();
challenge[2] = dv.add(0x16).readU8();
challenge[3] = dv.add(0x17).readU8();
}
const item_count = 1; // TODO const item_count = 1; // TODO
const reply_len = item_count * 2 + 4; // 4 hdr, 2b per item const reply_len = item_count * 2 + 4; // 4 hdr, 2b per item
const outbuf = new DataView(new Uint8Array(32).buffer); const outbuf = new DataView(new Uint8Array(32).buffer);
outbuf.writeU16(Commands.DrwAck); outbuf.writeU16(Commands.DrwAck);
outbuf.add(2).writeU16(reply_len); outbuf.add(2).writeU16(reply_len);
outbuf.add(4).writeU16(0xd2); outbuf.add(4).writeU8(0xd2);
outbuf.add(5).writeU8(m_stream);
outbuf.add(6).writeU16(item_count); outbuf.add(6).writeU16(item_count);
for (let i = 0; i < item_count; i++) { for (let i = 0; i < item_count; i++) {
outbuf.add(8 + i * 2).writeU16(pkt_id); outbuf.add(8 + i * 2).writeU16(pkt_id);