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[Issue #3145] ESP8266mDNS: Improve compliance with DNS-SD RFC6763

- When the "_services._dns_sd._udp.local" meta-query is received, an
enumeration of services types is now returned (e.g. "_http._tcp.local")
instead of an enumeration of instances (e.g.
"MyService._http._tcp.local").  This is consistent with Section 9 of the
RFC.

- When a response is sent, the response records are now properly
partitioned as either answers or additional records.  Only response
records that were explicitly requested as a result of the questions
should be treated as answers.  This is consistent with Section 12 of the
RFC.

- The "MDNSResponder::advertiseServices()" method has been removed as it
was declared as "private" and is no longer being called.  This method
was sending a response on multiple interfaces when available, but this
wasn't really necessary since the interface from which the request was
received that caused it to be invoked is known.
This commit is contained in:
Christopher Cooper
2017-04-24 09:30:35 -05:00
committed by Ivan Grokhotkov
parent 2450ec6803
commit 0c66c8a88f
2 changed files with 272 additions and 181 deletions

View File

@ -125,9 +125,10 @@ private:
uint16_t _getServicePort(char *service, char *proto);
MDNSTxt * _getServiceTxt(char *name, char *proto);
uint16_t _getServiceTxtLen(char *name, char *proto);
IPAddress _getRequestMulticastInterface();
void _parsePacket();
void _reply(uint8_t replyMask, char * service, char *proto, uint16_t port, uint32_t ip);
size_t advertiseServices(); // advertise all hosted services
void _replyToTypeEnumRequest(IPAddress multicastInterface);
void _replyToInstanceRequest(uint8_t questionMask, uint8_t responseMask, char * service, char *proto, uint16_t port, IPAddress multicastInterface);
MDNSAnswer* _getAnswerFromIdx(int idx);
int _getNumAnswers();
bool _listen();