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Add an LLMNR responder implementation (#2880)

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This is a simple implementation of an LLMNR responder for the ESP8266
Arduino package. Only support for advertizing a single hostname is
currently implemented.

LLMNR is a very similar protocol to MDNS. The primary practical
difference is that Windows systems (at least Windows 7 and later;
perhaps earlier) support the protocol out-of-the-box, whereas additional
software is required to support MDNS. However, Linux support is
currently more complex, and MacOS X support appears non-existent.
This commit is contained in:
Stephen Warren
2017-02-20 20:18:49 -07:00
committed by Ivan Grokhotkov
parent d2b370b22d
commit 04df3adb54
5 changed files with 568 additions and 0 deletions
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libraries/ESP8266LLMNR/ESP8266LLMNR.h Normal file
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/*
* ESP8266 LLMNR responder
* Copyright (C) 2017 Stephen Warren <swarren@wwwdotorg.org>
*
* Based on:
* ESP8266 Multicast DNS (port of CC3000 Multicast DNS library)
* Version 1.1
* Copyright (c) 2013 Tony DiCola (tony@tonydicola.com)
* ESP8266 port (c) 2015 Ivan Grokhotkov (ivan@esp8266.com)
* MDNS-SD Suport 2015 Hristo Gochkov
* Extended MDNS-SD support 2016 Lars Englund (lars.englund@gmail.com)
*
* License (MIT license):
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef ESP8266LLMNR_H
#define ESP8266LLMNR_H
#include <ESP8266WiFi.h>
class UdpContext;
class LLMNRResponder {
public:
LLMNRResponder();
~LLMNRResponder();
/* Initialize and start responding to LLMNR requests on all interfaces */
bool begin(const char* hostname);
/* Application should call this whenever AP is configured/disabled */
void notify_ap_change();
private:
String _hostname;
UdpContext *_conn;
WiFiEventHandler _sta_got_ip_handler;
WiFiEventHandler _sta_disconnected_handler;
bool _restart();
void _process_packet();
};
#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_LLMNR)
extern LLMNRResponder LLMNR;
#endif
#endif