const char* dns_protocol_to_string(DnsProtocol p) _const_;
DnsProtocol dns_protocol_from_string(const char *s) _pure_;
+/* https://www.iana.org/assignments/dns-svcb/dns-svcb.xhtml#dns-svcparamkeys */
+enum {
+ DNS_SVC_PARAM_KEY_MANDATORY = 0, /* RFC 9460 section 8 */
+ DNS_SVC_PARAM_KEY_ALPN = 1, /* RFC 9460 section 7.1 */
+ DNS_SVC_PARAM_KEY_NO_DEFAULT_ALPN = 2, /* RFC 9460 Section 7.1 */
+ DNS_SVC_PARAM_KEY_PORT = 3, /* RFC 9460 section 7.2 */
+ DNS_SVC_PARAM_KEY_IPV4HINT = 4, /* RFC 9460 section 7.3 */
+ DNS_SVC_PARAM_KEY_ECH = 5, /* RFC 9460 */
+ DNS_SVC_PARAM_KEY_IPV6HINT = 6, /* RFC 9460 section 7.3 */
+ DNS_SVC_PARAM_KEY_DOHPATH = 7, /* RFC 9461 */
+ DNS_SVC_PARAM_KEY_OHTTP = 8,
+ _DNS_SVC_PARAM_KEY_MAX_DEFINED,
+ DNS_SVC_PARAM_KEY_INVALID = 65535 /* RFC 9460 */
+};
+
+const char* dns_svc_param_key_to_string(int i) _const_;
+const char *format_dns_svc_param_key(uint16_t i, char buf[static DECIMAL_STR_MAX(uint16_t)+3]);
+#define FORMAT_DNS_SVC_PARAM_KEY(i) format_dns_svc_param_key(i, (char [DECIMAL_STR_MAX(uint16_t)+3]) {})
+
#define LLMNR_MULTICAST_IPV4_ADDRESS ((struct in_addr) { .s_addr = htobe32(224U << 24 | 252U) })
#define LLMNR_MULTICAST_IPV6_ADDRESS ((struct in6_addr) { .s6_addr = { 0xFF, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x03 } })