eliminate startup race condition on reading router.config file, prevent router state exception while waiting for initialization

org.getmonero.i2p.zero/src/org/getmonero/i2p/zero/RouterWrapper.java

@@ -103,9 +103,15 @@ public class RouterWrapper {
             if(router.isAlive()) {
               try {
                 File routerConfigFile = new File(i2PBaseDir, "router.config");
-                if(!routerConfigFile.exists()) continue;
+                if(!(routerConfigFile.exists() && routerConfigFile.canRead())) {
+                  Thread.sleep(100);
+                  continue;
+                }
                 Optional<String> portString = Files.lines(routerConfigFile.toPath()).filter(s -> s.startsWith("i2np.udp.port=")).findFirst();
-                if(portString.isEmpty()) continue;
+                if(portString.isEmpty()) {
+                  Thread.sleep(100);
+                  continue;
+                }
                 routerExternalPort = Integer.parseInt(portString.get().split("=")[1]);
                 break;
               }
@@ -323,6 +329,7 @@ public class RouterWrapper {
   final static String PROP_I2NP_NTCP_PORT = "i2np.ntcp.port";
 
   public NetworkStateMessage getReachability() {
+    try {
       RouterContext _context = router.getContext();
       if (_context.commSystem().isDummy())
         return new NetworkStateMessage(NetworkState.VMCOMM, "VM Comm System");
@@ -404,6 +411,10 @@ public class RouterWrapper {
           return new NetworkStateMessage(state, _t(status.toStatusString()));
       }
     }
+    catch(Exception e) {
+      return new NetworkStateMessage(NetworkState.WARN, "Starting...");
+    }
+  }
 
 
 

org.getmonero.i2p.zero/src/org/getmonero/i2p/zero/VERSION

@@ -1 +1 @@
-1.5
+1.6