65 lines
2.4 KiB
Java
65 lines
2.4 KiB
Java
package eu.siacs.conversations.xmpp.jingle;
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import java.net.Inet6Address;
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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.net.UnknownHostException;
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import java.security.SecureRandom;
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import java.util.ArrayList;
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import java.util.Enumeration;
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import java.util.List;
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import java.util.UUID;
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import eu.siacs.conversations.xmpp.Jid;
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public class DirectConnectionUtils {
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private static List<InetAddress> getLocalAddresses() {
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final List<InetAddress> addresses = new ArrayList<>();
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final Enumeration<NetworkInterface> interfaces;
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try {
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interfaces = NetworkInterface.getNetworkInterfaces();
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} catch (SocketException e) {
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return addresses;
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}
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while (interfaces.hasMoreElements()) {
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NetworkInterface networkInterface = interfaces.nextElement();
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final Enumeration<InetAddress> inetAddressEnumeration = networkInterface.getInetAddresses();
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while (inetAddressEnumeration.hasMoreElements()) {
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final InetAddress inetAddress = inetAddressEnumeration.nextElement();
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if (inetAddress.isLoopbackAddress() || inetAddress.isLinkLocalAddress()) {
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continue;
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}
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if (inetAddress instanceof Inet6Address) {
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//let's get rid of scope
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try {
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addresses.add(Inet6Address.getByAddress(inetAddress.getAddress()));
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} catch (UnknownHostException e) {
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//ignored
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}
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} else {
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addresses.add(inetAddress);
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}
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}
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}
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return addresses;
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}
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public static List<JingleCandidate> getLocalCandidates(Jid jid) {
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SecureRandom random = new SecureRandom();
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ArrayList<JingleCandidate> candidates = new ArrayList<>();
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for (InetAddress inetAddress : getLocalAddresses()) {
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final JingleCandidate candidate = new JingleCandidate(UUID.randomUUID().toString(), true);
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candidate.setHost(inetAddress.getHostAddress());
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candidate.setPort(random.nextInt(60000) + 1024);
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candidate.setType(JingleCandidate.TYPE_DIRECT);
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candidate.setJid(jid);
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candidate.setPriority(8257536 + candidates.size());
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candidates.add(candidate);
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}
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return candidates;
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}
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}
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