[web_server_base] Use 60 s, the Arduino DNSServer TTL

[web_server_base] Answer captive portal DNS queries with a 10 s TTL
2026-10-24 23:15:34 +00:00 · 2026-10-24 12:46:52 -10:00 · 2026-10-24 12:45:52 -10:00
1 changed files with 2 additions and 1 deletions
@@ -18,7 +18,8 @@ static constexpr uint16_t DNS_AA_FLAG = 1 << 10;
 static constexpr uint16_t DNS_OPCODE_MASK = 0x7800;
 static constexpr uint16_t DNS_QTYPE_A = 0x0001;
 static constexpr uint16_t DNS_QCLASS_IN = 0x0001;
-static constexpr uint16_t DNS_ANSWER_TTL = 300;
+// Same as the Arduino DNSServer, so clients drop the AP's address soon after the portal closes
+static constexpr uint16_t DNS_ANSWER_TTL = 60;

 // DNS Header structure
 struct DNSHeader {
Author	SHA1	Message	Date
J. Nick Koston	b2edaa8c09	[web_server_base] Use 60 s, the Arduino DNSServer TTL	2026-10-24 12:46:52 -10:00
J. Nick Koston	c45ec6695d	[web_server_base] Answer captive portal DNS queries with a 10 s TTL	2026-10-24 12:45:52 -10:00