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Some configuration may totally miss network interfaces, even localhost. Fixes #4249
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@ -31,6 +31,8 @@ package cc.arduino.packages.discoverers.network;
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import javax.jmdns.NetworkTopologyDiscovery;
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import javax.jmdns.NetworkTopologyDiscovery;
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import java.net.InetAddress;
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import java.net.InetAddress;
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import java.net.NetworkInterface;
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import java.net.SocketException;
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import java.util.*;
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import java.util.*;
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public class NetworkChecker extends TimerTask {
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public class NetworkChecker extends TimerTask {
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@ -53,6 +55,9 @@ public class NetworkChecker extends TimerTask {
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@Override
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@Override
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public void run() {
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public void run() {
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if (!hasNetworkInterfaces()) {
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return;
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}
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try {
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try {
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InetAddress[] curentAddresses = topology.getInetAddresses();
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InetAddress[] curentAddresses = topology.getInetAddresses();
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Set<InetAddress> current = new HashSet<>(curentAddresses.length);
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Set<InetAddress> current = new HashSet<>(curentAddresses.length);
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@ -68,4 +73,12 @@ public class NetworkChecker extends TimerTask {
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e.printStackTrace();
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e.printStackTrace();
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}
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}
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}
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}
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private boolean hasNetworkInterfaces() {
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try {
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return NetworkInterface.getNetworkInterfaces() != null;
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} catch (SocketException e) {
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return false;
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}
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}
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}
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}
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