Transports: Add method to get connected transport for peer

currently unused, for debugging only

router/java/src/net/i2p/router/CommSystemFacade.java

@@ -108,6 +108,14 @@ public abstract class CommSystemFacade implements Service {
     public abstract boolean isEstablished(Hash peer);
     public byte[] getIP(Hash dest) { return null; }
     public void queueLookup(byte[] ip) {}
+
+    /**
+     *  For debugging
+     *
+     *  @return the identifier for the transport if connected, or null
+     *  @since 0.9.69
+     */    
+    public String getTransport(Hash peer) { return null; }
     
     /**
      * Tell the comm system that we may disconnect from this peer.

router/java/src/net/i2p/router/transport/CommSystemFacadeImpl.java

@@ -186,6 +186,17 @@ public class CommSystemFacadeImpl extends CommSystemFacade {
     public boolean isEstablished(Hash peer) { 
         return _manager.isEstablished(peer); 
     }
+    
+    /**
+     *  For debugging
+     *
+     *  @return the identifier for the transport if connected, or null
+     *  @since 0.9.69
+     */    
+    @Override
+    public String getTransport(Hash peer) { 
+        return _manager.getTransport(peer); 
+    }
 
     /**
      *  @return a new list, may be modified

router/java/src/net/i2p/router/transport/TransportManager.java

@@ -638,6 +638,20 @@ public class TransportManager implements TransportEventListener {
         return false;
     }    
     
+    /**
+     *  For debugging
+     *
+     *  @return the identifier for the transport if connected, or null
+     *  @since 0.9.69
+     */    
+    String getTransport(Hash peer) { 
+        for (Transport t : _transports.values()) {
+            if (t.isEstablished(peer))
+                return t.getStyle();
+        }
+        return null;
+    }
+    
     /**
      *  @return a new list, may be modified
      *  @since 0.9.34