//
// UDP stuff
//
void sendUDPmessage( String msg, int port = 5100 )
{
IPAddress multicast( 225, 1, 1, 1 );
UDP server;
if ( server.begin( port ) )
{
server.beginPacket( multicast, port );
server.write( msg );
server.endPacket();
server.stop();
}
}
void openSocket() {
udp.stop();
// Get OpenThread interface index (OpenThread interface is named "th1" on all Mesh devices)
uint8_t idx = 0;
if_name_to_index("th1", &idx);
Log.trace("th1 index = %u", idx);
// Create UDP socket and bind to OpenThread interface
auto ur = udp.begin(PORT, idx);
Log.trace("UDP.begin() = %u", ur);
// Subscribe to ff03::1:1001
HAL_IPAddress addr = {};
addr.v = 6;
inet_inet_pton(AF_INET6, MULTICAST_ADDR, addr.ipv6);
mcastAddr = addr;
int r = udp.joinMulticast(mcastAddr);
Log.trace("Subscribed to %s: %d", MULTICAST_ADDR, r);
}
int WolClient::wake(const char* mac) {
uint8_t contents[MAGIC_HEADER_LENGTH + REPEAT_MAC * MAC_BYTES];
uint8_t rawMac[MAC_BYTES];
parseMacAddress(mac, rawMac);
UDP udp;
udp.begin(port);
udp.beginPacket(broadcastIP, port);
for (int i = 0; i < MAGIC_HEADER_LENGTH; i++) {
contents[i] = 0xFF;
}
for (uint8_t i = MAGIC_HEADER_LENGTH; i < sizeof contents; i++) {
contents[i] = rawMac[(i - MAGIC_HEADER_LENGTH) % MAC_BYTES];
}
udp.write(contents, sizeof contents);
udp.endPacket();
udp.stop();
return TRUE;
}
