native UDP listener enhancements (#48)

- uses new logger
- can specifiy which ip address to listen on
- if its a multicast address, multicast is enabled

include/udplistener/UDPListener.h

@@ -9,6 +9,7 @@
 
 // Hyperion includes
 #include <hyperion/Hyperion.h>
+#include <utils/Logger.h>
 
 class UDPClientConnection;
 
@@ -25,7 +26,7 @@ public:
 	/// @param hyperion Hyperion instance
 	/// @param port port number on which to start listening for connections
 	///
-	UDPListener(const int priority, const int timeout, uint16_t port = 2801);
+	UDPListener(const int priority, const int timeout, const std::string& address, quint16 listenPort);
 	~UDPListener();
 
 	///
@@ -59,4 +60,7 @@ private:
 
         /// The latest led color data
         std::vector<ColorRgb> _ledColors;
+
+	/// Logger instance
+	Logger * _log;
 };

libsrc/udplistener/UDPListener.cpp

@@ -10,19 +10,38 @@
 #include "utils/ColorRgb.h"
 #include "HyperionConfig.h"
 
-UDPListener::UDPListener(const int priority, const int timeout, uint16_t port) :
+UDPListener::UDPListener(const int priority, const int timeout, const std::string& address, quint16 listenPort) :
 	QObject(),
 	_hyperion(Hyperion::getInstance()),
 	_server(),
 	_openConnections(),
 	_priority(priority),
 	_timeout(timeout),
-	_ledColors(Hyperion::getInstance()->getLedCount(), ColorRgb::BLACK)
+	_ledColors(Hyperion::getInstance()->getLedCount(), ColorRgb::BLACK),
+	_log(Logger::getInstance("UDPLISTENER"))
 {
 	_server = new QUdpSocket(this);
-	if (!_server->bind(QHostAddress::Any, port))
+	QHostAddress listenAddress = QHostAddress(QHostAddress::Any);
+
+	if (address.empty()) {
+		listenAddress = QHostAddress::Any;
+	} else {
+		listenAddress = QHostAddress( QString::fromStdString(address) );
+	}
+
+	if (!_server->bind(listenAddress, listenPort))
 	{
-		throw std::runtime_error("UDPLISTENER ERROR: server could not bind to port");
+		Warning(_log, "Could not bind to %s:%d parsed from %s", listenAddress.toString().toStdString().c_str(), listenPort, address.c_str());
+	} else {
+		Info(_log, "Started, listening on %s:%d", listenAddress.toString().toStdString().c_str(), listenPort);
+//		if (listenAddress.QHostAddress::isMulticast() ) {	// needs qt >= 5.6
+		if (listenAddress.isInSubnet(QHostAddress::parseSubnet("224.0.0.0/4"))) {
+			if (_server->joinMulticastGroup(listenAddress)) {
+				Info(_log, "Multicast enabled");
+			} else {
+				Warning(_log, "Multicast failed");
+			}
+		}
 	}
 
 	// Set trigger for incoming connections
@@ -52,7 +71,6 @@ void UDPListener::readPendingDatagrams()
 		_server->readDatagram(datagram.data(), datagram.size(),
 					&sender, &senderPort);
 
-//		std::cout << "UDPLISTENER INFO: new packet from " << std::endl;
 		processTheDatagram(&datagram);
 
 	}
@@ -61,11 +79,8 @@ void UDPListener::readPendingDatagrams()
 
 void UDPListener::processTheDatagram(const QByteArray * datagram)
 {
-//        std::cout << "udp message: " << datagram->data() << std::endl;
-
 	int packlen = datagram->size()/3;
 	int ledlen = _ledColors.size();
-//	int maxled = std::min(datagram->size()/3, _ledColors.size());
 	int maxled = std::min(packlen , ledlen);
 
 	for (int ledIndex=0; ledIndex < maxled; ledIndex++) {
@@ -73,9 +88,7 @@ void UDPListener::processTheDatagram(const QByteArray * datagram)
 		rgb.red = datagram->at(ledIndex*3+0);
 		rgb.green = datagram->at(ledIndex*3+1);
 		rgb.blue = datagram->at(ledIndex*3+2);
-//		printf("%02x%02x%02x%02x ", ledIndex, rgb.red, rgb.green, rgb.blue);
 	}
-//	printf ("\n");
 
 	_hyperion->setColors(_priority, _ledColors, _timeout, -1);
 

src/hyperiond/hyperiond.cpp

@@ -5,6 +5,7 @@
 #include <QLocale>
 #include <QFile>
 #include <QHostInfo>
+#include <QHostAddress>
 #include <cstdint>
 #include <limits>
 
@@ -249,6 +250,7 @@ void HyperionDaemon::startNetworkServices()
 			_udpListener = new UDPListener(
 						udpListenerConfig.get("priority",700).asInt(),
 						udpListenerConfig.get("timeout",10000).asInt(),
+						udpListenerConfig.get("address", "").asString(),
 						udpListenerConfig.get("port", 2801).asUInt()
 					);
 			Info(_log, "UDP listener created and started on port %d", _udpListener->getPort());