avoid forced execution of InetAddress.getLocalHost() at startup, beca…

…use that hangs at some strangely declared linux configurations. The Domains.localHostAddresses object is first instantiated with a more simple logic and enriched with more host addresses using a concurrent thread that will not block a startup process.

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6482 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/net/yacy/kelondro/util/Domains.java

@@ -522,20 +522,32 @@ public static void flushMissNameCache() {
     public static String localHostName; 
     public static InetAddress[] localHostAddresses;
     static {
+        localHostName = "127.0.0.1";
         try {
-            localHostAddress = InetAddress.getByName("127.0.0.1");
+            localHostAddress = InetAddress.getByName(localHostName);
         } catch (UnknownHostException e1) {}
-        try {
-            localHostAddress = InetAddress.getLocalHost();
-            localHostName = localHostAddress.getHostName();
-        } catch (UnknownHostException e) {
-            localHostName = "localhost";
-        }
         try {
             localHostAddresses = InetAddress.getAllByName(localHostName);
         } catch (UnknownHostException e) {
             localHostAddresses = new InetAddress[0];
         }
+        new localHostAddressLookup().start();
+    }
+
+    public static class localHostAddressLookup extends Thread {
+        public void run() {
+            try {
+                localHostAddress = InetAddress.getLocalHost();
+                localHostName = localHostAddress.getHostName();
+            } catch (UnknownHostException e) {
+                localHostName = "127.0.0.1";
+            }
+            try {
+                localHostAddresses = InetAddress.getAllByName(localHostName);
+            } catch (UnknownHostException e) {
+                localHostAddresses = new InetAddress[0];
+            }
+        }
     }
 
     public static InetAddress myPublicLocalIP() {