SSU: Fix deadlock with router restart

http://zzz.i2p/topics/3036

history.txt

@@ -1,3 +1,22 @@
+2021-01-20 zzz
+ * Console: Fix link to UPnP status
+ * SSU: Fix deadlock with router restart
+
+2021-01-14 zzz
+ * Router:
+   - Change default encryption type to ECIES-X25519 (proposal 156)
+   - Move Sybil subsystem from console to router
+   - Limit max addresses in RI
+
+2021-01-13 zzz
+ * Jetty: Fix URI in request logs
+
+2021-01-12 zzz
+ * i2psnark: Don't decrement downloaded counter after receiving bad piece
+
+2021-01-11 zzz
+ * Console: Delete rrd files for no-longer-configured stats at startup
+
 2021-01-08 zzz
  * i2ptunnel: Disable shared clients (DSA) (part 2)
  * SSU: Fix bandwidth estimator deadlock (ticket #2798)

router/java/src/net/i2p/router/RouterVersion.java

@@ -18,7 +18,7 @@ public class RouterVersion {
     /** deprecated */
     public final static String ID = "Monotone";
     public final static String VERSION = CoreVersion.VERSION;
-    public final static long BUILD = 13;
+    public final static long BUILD = 14;
 
     /** for example "-test" */
     public final static String EXTRA = "";

router/java/src/net/i2p/router/transport/udp/UDPTransport.java

@@ -2455,7 +2455,7 @@ public class UDPTransport extends TransportImpl implements TimedWeightedPriority
                 // warning, this calls back into us with allowRebuildRouterInfo = false,
                 // via CSFI.createAddresses->TM.getAddresses()->updateAddress()->REA
                 if (allowRebuildRouterInfo)
-                    _context.router().rebuildRouterInfo();
+                    rebuildRouterInfo();
             } else {
                 addr = null;
             }
@@ -2510,11 +2510,35 @@ public class UDPTransport extends TransportImpl implements TimedWeightedPriority
                 // warning, this calls back into us with allowRebuildRouterInfo = false,
                 // via CSFI.createAddresses->TM.getAddresses()->updateAddress()->REA
                 if (allowRebuildRouterInfo)
-                    _context.router().rebuildRouterInfo();
+                    rebuildRouterInfo();
             }
         }
     }
 
+    /**
+     *  Avoid deadlocks part 999
+     *  @since 0.9.49
+     */
+    private void rebuildRouterInfo() {
+        (new RebuildEvent()).schedule(0);
+    }
+
+    /**
+     *  @since 0.9.49
+     */
+    private class RebuildEvent extends SimpleTimer2.TimedEvent {
+        /**
+         *  Caller must schedule
+         */
+        public RebuildEvent() {
+            super(_context.simpleTimer2());
+        }
+        public void timeReached() {
+            _context.router().rebuildRouterInfo(true);
+        }
+    }
+
+
     /**
      *  Simple fetch of stored IP and port, since
      *  we don't put them in the real, published RouterAddress anymore