commit 624b583816a8915b8179365b9354caa19f275354
parent c03e1814d55e85e21010928d397d7e2517068091
Author: Daniel Barlow <dan@telent.net>
Date: Mon, 29 Dec 2025 12:28:23 +0000
todo legacy mdns
Diffstat:
| M | notes.md | | | 60 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++--- |
1 file changed, 57 insertions(+), 3 deletions(-)
diff --git a/notes.md b/notes.md
@@ -190,11 +190,65 @@ status: done except that (c) probably the code is sucky;
** do we need to do NSEC?
+** handle QU and legacy queries
+
+ // RFC: "Multicast DNS responses MUST NOT contain any questions in the
+ // Question Section. ". However, responses to "legacy" queries (port != 5353)
+ // should have a question section just like traditional DNS
+ if q.name().eq(&Label::from("&my_hostname")) {
+ // if meta.endpoint.port == 5353 {
+ // send_advert(&sock, q_id, MDNS_ENDPOINT, None, &my_address).await;
+ // } else if (q.class() & 0x8000) != 0 {
+ // log::info!("unicast");
+ // send_advert(&sock, q_id, meta.endpoint, None, &my_address).await;
+ // } else {
+ // // legacy unicast, send questions
+ // send_advert(&sock, q_id, meta.endpoint, Some(q), &my_address).await;
+ // }
+ // log::info!("IT ME");
+ }
+
+
mdns is so fricking noisy already I don't know if this is worth the extra effort
** compress responses
-* start a udp server, and stream the tables to anyone who sends a message to it
+* write the udp server
+
+- on reception of a packet containing table numbers, start streaming those
+tables to the peer
+
+- probably the request protocol should be a _bit_ cleverer
+ - tables
+ - refresh time
+ - interpreted numbers
+
+```
+u16 poll_interval (ms)
+u8 subscription_type = T for table
+u8 table_number
+u16 poll_interval (ms)
+u8 subscription_type = T for table
+u8 table_number
+...
+u16 poll_interval = 0
+```
+
+we can extend this later to other subscription_types for pre-interprteted data.
+
+
+
+
+- if the peer goes away, stop
+
+- if we subsequently get a packet from a different address, send there instead
+
+* write the receiver
+
+- android app
+- does enough mdns to choose a keihin service instance (https://github.com/mnellemann/mdns-explorer may help)
-* udp is connectionless. if we get a second message from a different address,
-switch to straming the tables there instead
+- writes a list of tables to the advertised ip address/port
+- reads udp and writes to "disk"
+- updates the display to show data is incoming
+- provides a "stop" button to close the socket
