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Multicast in SoftAP mode (#96)

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SDK 1.3 fixed a bug which caused multicast UDP to fail on SoftAP interface. Update MDNSResponder and documentation appropriately.
This commit is contained in:
Ivan Grokhotkov 2015-08-10 16:14:26 +03:00
parent 208ae95979
commit 6cf18ed1a2
3 changed files with 58 additions and 55 deletions
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2
doc/reference.md
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@ -290,7 +290,6 @@ When listening to multicast packets, replace `udp.begin(port)` with
`udp.beginMulticast(WiFi.localIP(), multicast_ip_addr, port)`.
You can use `udp.destinationIP()` to tell whether the packet received was
sent to the multicast or unicast address.
Also note that multicast doesn't work on softAP interface.
`WiFiServer`, `WiFiClient`, and `WiFiUDP` behave mostly the same way as with WiFi shield library.
Four samples are provided for this library.
@ -373,7 +372,6 @@ instead of the one that comes with this package.
## mDNS and DNS-SD responder (ESP8266mDNS library)
Allows the sketch to respond to multicast DNS queries for domain names like "foo.local", and DNS-SD (service dicovery) queries.
Currently the library only works on STA interface, AP interface is not supported.
See attached example for details.
## SSDP responder (ESP8266SSDP)

12
libraries/ESP8266mDNS/ESP8266mDNS.cpp
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@ -163,15 +163,21 @@ uint16_t MDNSResponder::_getServicePort(char *name, char *proto){
}
uint32_t MDNSResponder::_getOurIp(){
if(wifi_get_opmode() & STATION_MODE){
int mode = wifi_get_opmode();
if(mode & STATION_MODE){
struct ip_info staIpInfo;
wifi_get_ip_info(STATION_IF, &staIpInfo);
return staIpInfo.ip.addr;
}
} else if (mode & SOFTAP_MODE) {
struct ip_info staIpInfo;
wifi_get_ip_info(SOFTAP_IF, &staIpInfo);
return staIpInfo.ip.addr;
} else {
#ifdef MDNS_DEBUG_ERR
os_printf("ERR_NO_LOCAL_IP\n");
#endif
return 0;
return 0;
}
}
void MDNSResponder::_parsePacket(){

1
libraries/ESP8266mDNS/ESP8266mDNS.h
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@ -13,7 +13,6 @@ Requirements:
Usage:
- Include the ESP8266 Multicast DNS library in the sketch.
- Create an instance of the MDNSResponder class.
- Call the begin method in the sketch's setup and provide a domain name (without
the '.local' suffix, i.e. just provide 'foo' to resolve 'foo.local'), and the
Adafruit CC3000 class instance. Optionally provide a time to live (in seconds)