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UpnpBroadcastResponder.cpp
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UpnpBroadcastResponder.cpp
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#include "UpnpBroadcastResponder.h"
#include "Switch.h"
#include <functional>
// Multicast declarations
IPAddress ipMulti(239, 255, 255, 250);
const unsigned int portMulti = 1900;
char packetBuffer[512];
#define MAX_SWITCHES 14
Switch switches[MAX_SWITCHES] = {};
int numOfSwitchs = 0;
//#define numOfSwitchs (sizeof(switches)/sizeof(Switch)) //array size
//<<constructor>>
UpnpBroadcastResponder::UpnpBroadcastResponder(){
}
//<<destructor>>
UpnpBroadcastResponder::~UpnpBroadcastResponder(){/*nothing to destruct*/}
bool UpnpBroadcastResponder::beginUdpMulticast(){
boolean state = false;
Serial.println("Begin multicast ..");
if(UDP.beginMulticast(WiFi.localIP(), ipMulti, portMulti)) {
Serial.print("Udp multicast server started at ");
Serial.print(ipMulti);
Serial.print(":");
Serial.println(portMulti);
state = true;
}
else{
Serial.println("Connection failed");
}
return state;
}
//Switch *ptrArray;
void UpnpBroadcastResponder::addDevice(Switch& device) {
Serial.print("Adding switch : ");
Serial.print(device.getAlexaInvokeName());
Serial.print(" index : ");
Serial.println(numOfSwitchs);
switches[numOfSwitchs] = device;
numOfSwitchs++;
}
void UpnpBroadcastResponder::serverLoop(){
int packetSize = UDP.parsePacket();
if (packetSize <= 0)
return;
IPAddress senderIP = UDP.remoteIP();
unsigned int senderPort = UDP.remotePort();
// read the packet into the buffer
UDP.read(packetBuffer, packetSize);
// check if this is a M-SEARCH for WeMo device
String request = String((char *)packetBuffer);
if(request.indexOf('M-SEARCH') > 0) {
// Issue https://github.com/kakopappa/arduino-esp8266-alexa-multiple-wemo-switch/issues/22 fix
if((request.indexOf("urn:Belkin:device:**") > 0) || (request.indexOf("ssdp:all") > 0) || (request.indexOf("upnp:rootdevice") > 0)) {
Serial.println("Got UDP Belkin Request..");
// int arrSize = sizeof(switchs) / sizeof(Switch);
for(int n = 0; n < numOfSwitchs; n++) {
Switch &sw = switches[n];
if (&sw != NULL) {
sw.respondToSearch(senderIP, senderPort);
}
}
}
}
}