Merge pull request esp8266#1451 from probonopd/patch-2

advertise all hosted services

Author: igrr

libraries/ESP8266mDNS/ESP8266mDNS.cpp

@@ -366,6 +366,10 @@ void MDNSResponder::_parsePacket(){
       memmove(protoName, protoName+1, protoNameLen);
       protoNameLen--;
       protoParsed = true;
+    } else if(strcmp("services", serviceName) == 0 && strcmp("_dns-sd", protoName) == 0){
+      _conn->flush();
+      advertiseServices();
+      return;
     } else {
 #ifdef MDNS_DEBUG_ERR
       Serial.printf("ERR_PROTO: %s\n", protoName);
@@ -479,6 +483,18 @@ void MDNSResponder::enableArduino(uint16_t port, bool auth){
   addServiceTxt("arduino", "tcp", "auth_upload", (auth) ? "yes":"no");
 }
 
+size_t MDNSResponder::advertiseServices(){
+  MDNSService* servicePtr;
+  size_t i = 0;
+  for (servicePtr = _services; servicePtr; servicePtr = servicePtr->_next) {
+    if(servicePtr->_port > 0){
+      _reply(0x0F, servicePtr->_name, servicePtr->_proto, servicePtr->_port);
+      i++;
+    }
+  }
+  return i;
+}
+
 void MDNSResponder::_reply(uint8_t replyMask, char * service, char *proto, uint16_t port){
   int i;
   if(replyMask == 0) return;

libraries/ESP8266mDNS/ESP8266mDNS.h

@@ -104,6 +104,7 @@ class MDNSResponder {
   uint16_t _getServiceTxtLen(char *name, char *proto);
   void _parsePacket();
   void _reply(uint8_t replyMask, char * service, char *proto, uint16_t port);
+  size_t advertiseServices(); // advertise all hosted services
 };
 
 extern MDNSResponder MDNS;