eculocate

commit 0f327bf29338d7a08d404bc989502064ae95ed1f
parent 791a1e246fac978b46503b7e757eb9eea4edf049
Author: Daniel Barlow <dan@telent.net>
Date:   Mon, 29 Dec 2025 16:55:50 +0000

add RData::{Txt,A}

Diffstat:
M
ecu-esp32/src/wifi.rs
 | 
29
++++++++++++++++++++++++-----

1 file changed, 24 insertions(+), 5 deletions(-)
diff --git a/ecu-esp32/src/wifi.rs b/ecu-esp32/src/wifi.rs
@@ -94,7 +94,7 @@ impl<'a> MdnsResponder<'a> {
 
 	Self {
 	    sock,
-	    database: DnsDatabase::create(&my_address),
+	    database: DnsDatabase::create(my_address),
 	}
     }
 
@@ -229,7 +229,9 @@ impl<'a> MdnsResponder<'a> {
 enum RData {
     Raw(Vec<u8>),
     Srv { target: String, port: u16, priority: u16, weight: u16 },
-    Ptr(String)
+    Ptr(String),
+    A([u8; 4]),
+    Txt(Vec<String>)
 }
 
 impl RData {
@@ -265,6 +267,23 @@ impl RData {
 	    RData::Ptr(name) => {
 		Self::encode_as_label(name, out, 0)
 	    }
+	    RData::A(octets) => {
+		out[..4].clone_from_slice(octets);
+		&out[..4]
+	    },
+	    RData::Txt(strings) => {
+		let mut offset = 0;
+		for s in strings {
+		    out[offset] = (s.len() & 0xff) as u8;
+		    offset += 1;
+		    for c in s.as_bytes().iter() {
+			out[offset] = *c;
+			offset += 1;
+		    }
+		}
+		out[offset] = 0;
+		&out[..(offset+1)]
+	    }
 	}
     }
 }
@@ -316,12 +335,12 @@ struct DnsDatabase {
 }
 
 impl DnsDatabase {
-    fn create(my_ip_address : &[u8]) -> Self {
+    fn create(my_ip_address : [u8; 4]) -> Self {
 	let static_records = [
 	    DnsResource::new(
 		"eculogical.local",
 		ResourceType::A,
-		RData::Raw(my_ip_address.try_into().unwrap())
+		RData::A(my_ip_address)
 	    ),
 	    DnsResource::new(
 		"Bike._keihin._udp.local",
@@ -334,7 +353,7 @@ impl DnsDatabase {
 	    DnsResource::new(
 		"Bike._keihin._udp.local",
 		ResourceType::Txt,
-		RData::Raw(b"\x09txtvers=1".to_vec())
+		RData::Txt(["txtvers=1".into()].into())
 	    ),
 	    DnsResource::new(
 		"_keihin._udp.local",