I2PSnark: Use new BW Limits message, remove router.jar dependencies

apps/i2psnark/java/src/org/klomp/snark/BWLimits.java

@@ -0,0 +1,44 @@
+/*
+ * Released into the public domain 
+ * with no warranty of any kind, either expressed or implied.  
+ */
+package org.klomp.snark;
+
+import java.util.Arrays;
+import java.util.Properties;
+
+import net.i2p.I2PAppContext;
+import net.i2p.client.I2PSessionException;
+import net.i2p.client.I2PClient;
+import net.i2p.client.I2PSession;
+import net.i2p.client.I2PSimpleClient;
+
+/**
+ * Connect via I2CP and ask the router the bandwidth limits.
+ *
+ * The call is blocking and returns null on failure.
+ * Timeout is set to 5 seconds in I2PSimpleSession but it should be much faster.
+ *
+ * @author zzz
+ */
+class BWLimits {
+
+    public static int[] getBWLimits(String host, int port) {
+        int[] rv = null;
+        try {
+            I2PClient client = new I2PSimpleClient();
+            Properties opts = new Properties();
+            opts.put(I2PClient.PROP_TCP_HOST, host);
+            opts.put(I2PClient.PROP_TCP_PORT, "" + port);
+            I2PSession session = client.createSession(null, opts);
+            session.connect();
+            rv = session.bandwidthLimits();
+            session.destroySession();
+        } catch (I2PSessionException ise) {}
+        return rv;
+    }
+
+    public static void main(String args[]) {
+        System.out.println(Arrays.toString(getBWLimits("127.0.0.1", 7654)));
+    }
+}