livoxProto1: Fix source and dest port for handshake & heartbeat

Handshake: We must wait for the handshake ACK on the same port as
the one we sent the handshake REQ from.
Heartbeat: We must send the heartbeats from the same source port
as the one we sent the handshake REQ from.

commonLibs/livoxProto1/device.cpp

@@ -205,6 +205,14 @@ bool Device::executeHandshake(
 		boost::asio::ip::udp::socket socket(io_context);
 		socket.open(boost::asio::ip::udp::v4());
 
+		// Bind socket to cmdPort so we can receive the handshake response
+		boost::asio::ip::udp::endpoint localEndpoint(
+			boost::asio::ip::address_v4::any(), cmdPort);
+		socket.bind(localEndpoint);
+
+		std::cout << __func__ << ": Bound socket to local port " << cmdPort
+			<< " for handshake response" << std::endl;
+
 		// Get the IP addr of the SMO machine's iface that is facing the device.
 		std::string smoIp = getSmoIp(deviceIP);
 
@@ -425,6 +433,14 @@ void Device::startHeartbeat()
 		componentThread->getIoService());
 	heartbeatSocket->open(boost::asio::ip::udp::v4());
 
+	/**		EXPLANATION:
+	 * Bind heartbeat socket to cmdPort so heartbeats come from the same port
+	 * as handshake.
+	 */
+	boost::asio::ip::udp::endpoint heartbeatLocalEndpoint(
+		boost::asio::ip::address_v4::any(), cmdPort);
+	heartbeatSocket->bind(heartbeatLocalEndpoint);
+
 	// Create heartbeat timer
 	heartbeatTimer = std::make_unique<boost::asio::deadline_timer>(
 		componentThread->getIoService());
@@ -454,7 +470,7 @@ void Device::sendHeartbeat()
 
 		boost::asio::ip::udp::endpoint deviceEndpoint(
 			boost::asio::ip::address::from_string(discoveredDevice.ipAddr),
-			cmdPort);
+			65000);  // Heartbeats and commands go to port 65000
 
 		heartbeatSocket->send_to(
 			boost::asio::buffer(&heartbeatMsg, sizeof(heartbeatMsg)),