[mdns] add Sendspin advertisement support (#14013)

Co-authored-by: J. Nick Koston <nick@home-assistant.io>

esphome/components/mdns/__init__.py

@@ -21,7 +21,7 @@ DEPENDENCIES = ["network"]
 # Components that create mDNS services at runtime
 # IMPORTANT: If you add a new component here, you must also update the corresponding
 # #ifdef blocks in mdns_component.cpp compile_records_() method
-COMPONENTS_WITH_MDNS_SERVICES = ("api", "prometheus", "web_server")
+COMPONENTS_WITH_MDNS_SERVICES = ("api", "prometheus", "sendspin", "web_server")
 
 mdns_ns = cg.esphome_ns.namespace("mdns")
 MDNSComponent = mdns_ns.class_("MDNSComponent", cg.Component)

esphome/components/mdns/mdns_component.cpp

@@ -29,6 +29,10 @@ static const char *const TAG = "mdns";
 #define USE_WEBSERVER_PORT 80  // NOLINT
 #endif
 
+#ifndef USE_SENDSPIN_PORT
+#define USE_SENDSPIN_PORT 8928  // NOLINT
+#endif
+
 // Define all constant strings using the macro
 MDNS_STATIC_CONST_CHAR(SERVICE_TCP, "_tcp");
 
@@ -150,6 +154,18 @@ void MDNSComponent::compile_records_(StaticVector<MDNSService, MDNS_SERVICE_COUN
   prom_service.port = USE_WEBSERVER_PORT;
 #endif
 
+#ifdef USE_SENDSPIN
+  MDNS_STATIC_CONST_CHAR(SERVICE_SENDSPIN, "_sendspin");
+  MDNS_STATIC_CONST_CHAR(TXT_SENDSPIN_PATH, "path");
+  MDNS_STATIC_CONST_CHAR(VALUE_SENDSPIN_PATH, "/sendspin");
+
+  auto &sendspin_service = services.emplace_next();
+  sendspin_service.service_type = MDNS_STR(SERVICE_SENDSPIN);
+  sendspin_service.proto = MDNS_STR(SERVICE_TCP);
+  sendspin_service.port = USE_SENDSPIN_PORT;
+  sendspin_service.txt_records = {{MDNS_STR(TXT_SENDSPIN_PATH), MDNS_STR(VALUE_SENDSPIN_PATH)}};
+#endif
+
 #ifdef USE_WEBSERVER
   MDNS_STATIC_CONST_CHAR(SERVICE_HTTP, "_http");
 
@@ -159,7 +175,8 @@ void MDNSComponent::compile_records_(StaticVector<MDNSService, MDNS_SERVICE_COUN
   web_service.port = USE_WEBSERVER_PORT;
 #endif
 
-#if !defined(USE_API) && !defined(USE_PROMETHEUS) && !defined(USE_WEBSERVER) && !defined(USE_MDNS_EXTRA_SERVICES)
+#if !defined(USE_API) && !defined(USE_PROMETHEUS) && !defined(USE_SENDSPIN) && !defined(USE_WEBSERVER) && \
+    !defined(USE_MDNS_EXTRA_SERVICES)
   MDNS_STATIC_CONST_CHAR(SERVICE_HTTP, "_http");
   MDNS_STATIC_CONST_CHAR(TXT_VERSION, "version");
 

esphome/core/defines.h

@@ -210,6 +210,8 @@
 #define USE_ESP32_IMPROV_NEXT_URL
 #define USE_MICROPHONE
 #define USE_PSRAM
+#define USE_SENDSPIN
+#define USE_SENDSPIN_PORT 8928  // NOLINT
 #define USE_SOCKET_IMPL_BSD_SOCKETS
 #define USE_SOCKET_SELECT_SUPPORT
 #define USE_WAKE_LOOP_THREADSAFE