Add these partial fixes for Windows WSL

commonLibs/livoxProto1/udpCommandDemuxer.cpp

@@ -125,6 +125,17 @@ void UdpCommandDemuxer::setupCommandSocket()
 			+ ": Failed to create socket: " + strerror(errno));
 	}
 
+	// Set SO_REUSEADDR to allow binding even if port is in TIME_WAIT
+	int reuse = 1;
+	if (setsockopt(
+		socketGuard.getFd(), SOL_SOCKET, SO_REUSEADDR,
+		&reuse, sizeof(reuse)) < 0)
+	{
+		throw std::runtime_error(
+			std::string(__func__)
+			+ ": Failed to set SO_REUSEADDR: " + strerror(errno));
+	}
+
 	// Set socket to non-blocking mode
 	int flags = fcntl(socketGuard.getFd(), F_GETFL, 0);
 	if (flags < 0 || fcntl(
@@ -135,7 +146,23 @@ void UdpCommandDemuxer::setupCommandSocket()
 			+ ": Failed to set non-blocking mode: " + strerror(errno));
 	}
 
-	// Bind to command port
+	/**		EXPLANATION:
+	 * Bind to command port.
+	 *
+	 * WSL2 NAT PORT TRANSLATION ISSUE:
+	 * On Windows 10, WSL2 uses NAT that translates UDP source ports when
+	 * forwarding packets from WSL to the physical network. A socket bound to
+	 * port 56001 in WSL may send from port 52511 on the wire.
+	 *
+	 * The device should use the cmd_port from the handshake message (56001),
+	 * not the translated source port, so this may not break functionality.
+	 * However, Windows NAT behavior can be unpredictable.
+	 *
+	 * Solutions:
+	 * - Windows 11 22H2+: Use WSL2 mirror networking mode (.wslconfig)
+	 * - Run natively on Linux
+	 * - Accept the limitation (may work if device uses cmd_port from handshake)
+	 */
 	struct sockaddr_in localAddr;
 	memset(&localAddr, 0, sizeof(localAddr));
 	localAddr.sin_family = AF_INET;
@@ -151,6 +178,31 @@ void UdpCommandDemuxer::setupCommandSocket()
 			+ std::to_string(commandPort) + ": " + strerror(errno));
 	}
 
+	/* Verify the socket is actually bound to the expected port
+	 * This helps catch WSL/Windows networking issues.
+	 */
+	struct sockaddr_in boundAddr;
+	socklen_t boundAddrLen = sizeof(boundAddr);
+	if (getsockname(
+		socketGuard.getFd(),
+		(struct sockaddr *)&boundAddr, &boundAddrLen) == 0)
+	{
+		uint16_t boundPort = ntohs(boundAddr.sin_port);
+		if (boundPort != commandPort)
+		{
+			std::cerr << __func__ << ": WARNING: Socket bound to port "
+				<< boundPort << " instead of expected port "
+				<< commandPort << std::endl;
+		}
+#if 1
+		else
+		{
+			std::cout << __func__ << ": Successfully bound command socket "
+				"to port " << boundPort << std::endl;
+		}
+#endif
+	}
+
 	// Create boost wrapper for async operations
 	cmdEndpointFdDesc = std::make_shared<boost::asio::posix::stream_descriptor>(
 		componentThread->getIoService(), socketGuard.getFd());