make VirtualNetworkRoute a plain data class

java/jni/ZT_jnicache.cpp

@@ -110,15 +110,6 @@ jmethodID VirtualNetworkConfigOperation_fromInt_method;
 jmethodID VirtualNetworkStatus_fromInt_method;
 jmethodID VirtualNetworkType_fromInt_method;
 
-//
-// Instance fields
-//
-
-jfieldID VirtualNetworkRoute_flags_field;
-jfieldID VirtualNetworkRoute_metric_field;
-jfieldID VirtualNetworkRoute_target_field;
-jfieldID VirtualNetworkRoute_via_field;
-
 //
 // Enums
 //
@@ -188,7 +179,7 @@ void setupJNICache(JavaVM *vm) {
     EXCEPTIONANDNULLCHECK(VirtualNetworkConfig_ctor = env->GetMethodID(VirtualNetworkConfig_class, "<init>", "(JJLjava/lang/String;Lcom/zerotier/sdk/VirtualNetworkStatus;Lcom/zerotier/sdk/VirtualNetworkType;IZZZIJ[Ljava/net/InetSocketAddress;[Lcom/zerotier/sdk/VirtualNetworkRoute;Lcom/zerotier/sdk/VirtualNetworkDNS;)V"));
     EXCEPTIONANDNULLCHECK(VirtualNetworkDNS_ctor = env->GetMethodID(VirtualNetworkDNS_class, "<init>", "(Ljava/lang/String;Ljava/util/ArrayList;)V"));
     EXCEPTIONANDNULLCHECK(VirtualNetworkFrameListener_onVirtualNetworkFrame_method = env->GetMethodID(VirtualNetworkFrameListener_class, "onVirtualNetworkFrame", "(JJJJJ[B)V"));
-    EXCEPTIONANDNULLCHECK(VirtualNetworkRoute_ctor = env->GetMethodID(VirtualNetworkRoute_class, "<init>", "()V"));
+    EXCEPTIONANDNULLCHECK(VirtualNetworkRoute_ctor = env->GetMethodID(VirtualNetworkRoute_class, "<init>", "(Ljava/net/InetSocketAddress;Ljava/net/InetSocketAddress;II)V"));
 
     //
     // Static methods
@@ -202,15 +193,6 @@ void setupJNICache(JavaVM *vm) {
     EXCEPTIONANDNULLCHECK(VirtualNetworkStatus_fromInt_method = env->GetStaticMethodID(VirtualNetworkStatus_class, "fromInt", "(I)Lcom/zerotier/sdk/VirtualNetworkStatus;"));
     EXCEPTIONANDNULLCHECK(VirtualNetworkType_fromInt_method = env->GetStaticMethodID(VirtualNetworkType_class, "fromInt", "(I)Lcom/zerotier/sdk/VirtualNetworkType;"));
 
-    //
-    // Instance fields
-    //
-
-    EXCEPTIONANDNULLCHECK(VirtualNetworkRoute_flags_field = env->GetFieldID(VirtualNetworkRoute_class, "flags", "I"));
-    EXCEPTIONANDNULLCHECK(VirtualNetworkRoute_metric_field = env->GetFieldID(VirtualNetworkRoute_class, "metric", "I"));
-    EXCEPTIONANDNULLCHECK(VirtualNetworkRoute_target_field = env->GetFieldID(VirtualNetworkRoute_class, "target", "Ljava/net/InetSocketAddress;"));
-    EXCEPTIONANDNULLCHECK(VirtualNetworkRoute_via_field = env->GetFieldID(VirtualNetworkRoute_class, "via", "Ljava/net/InetSocketAddress;"));
-
     //
     // Enums
     //

java/jni/ZT_jnicache.h

@@ -79,15 +79,6 @@ extern jmethodID VirtualNetworkConfigOperation_fromInt_method;
 extern jmethodID VirtualNetworkStatus_fromInt_method;
 extern jmethodID VirtualNetworkType_fromInt_method;
 
-//
-// Instance fields
-//
-
-extern jfieldID VirtualNetworkRoute_flags_field;
-extern jfieldID VirtualNetworkRoute_metric_field;
-extern jfieldID VirtualNetworkRoute_target_field;
-extern jfieldID VirtualNetworkRoute_via_field;
-
 //
 // Enums
 //

java/jni/ZT_jniutils.cpp

@@ -336,19 +336,34 @@ jobject newVersion(JNIEnv *env, int major, int minor, int rev)
 
 jobject newVirtualNetworkRoute(JNIEnv *env, const ZT_VirtualNetworkRoute &route)
 {
-    jobject routeObj = env->NewObject(VirtualNetworkRoute_class, VirtualNetworkRoute_ctor);
+    //
-    if(env->ExceptionCheck() || routeObj == NULL)
+    // may be NULL
-    {
+    //
+    jobject targetObj = newInetSocketAddress(env, route.target);
+    if (env->ExceptionCheck()) {
         return NULL;
     }
 
-    jobject targetObj = newInetSocketAddress(env, route.target);
+    //
+    // may be NULL
+    //
     jobject viaObj = newInetSocketAddress(env, route.via);
+    if (env->ExceptionCheck()) {
+        return NULL;
+    }
 
-    env->SetObjectField(routeObj, VirtualNetworkRoute_target_field, targetObj);
+    jobject routeObj = env->NewObject(
-    env->SetObjectField(routeObj, VirtualNetworkRoute_via_field, viaObj);
+            VirtualNetworkRoute_class,
-    env->SetIntField(routeObj, VirtualNetworkRoute_flags_field, (jint)route.flags);
+            VirtualNetworkRoute_ctor,
-    env->SetIntField(routeObj, VirtualNetworkRoute_metric_field, (jint)route.metric);
+            targetObj,
+            viaObj,
+            route.flags,
+            route.metric);
+    if(env->ExceptionCheck() || routeObj == NULL)
+    {
+        LOGE("Exception creating VirtualNetworkRoute");
+        return NULL;
+    }
 
     return routeObj;
 }

java/src/com/zerotier/sdk/VirtualNetworkRoute.java

@@ -29,34 +29,39 @@ package com.zerotier.sdk;
 
 import java.net.InetSocketAddress;
 
-public final class VirtualNetworkRoute implements Comparable<VirtualNetworkRoute>
+/**
+ * A route to be pushed on a virtual network
+ *
+ * Defined in ZeroTierOne.h as ZT_VirtualNetworkRoute
+ */
+public class VirtualNetworkRoute implements Comparable<VirtualNetworkRoute>
 {
-	private VirtualNetworkRoute() {
-        target = null;
-        via = null;
-        flags = 0;
-        metric = 0;
-    }
-
 	/**
 	 * Target network / netmask bits (in port field) or NULL or 0.0.0.0/0 for default
 	 */
-	public InetSocketAddress target;
+    private final InetSocketAddress target;
-
+    
 	/**
 	 * Gateway IP address (port ignored) or NULL (family == 0) for LAN-local (no gateway)
 	 */
-	public InetSocketAddress via;
+    private final InetSocketAddress via;
 
 	/**
 	 * Route flags
 	 */
-	public int flags;
+    private final int flags;
 
 	/**
 	 * Route metric (not currently used)
 	 */
-	public int metric;
+    private final int metric;
+
+    public VirtualNetworkRoute(InetSocketAddress target, InetSocketAddress via, int flags, int metric) {
+        this.target = target;
+        this.via = via;
+        this.flags = flags;
+        this.metric = metric;
+    }
 
     @Override
     public String toString() {
@@ -139,4 +144,20 @@ public final class VirtualNetworkRoute implements Comparable<VirtualNetworkRoute
 
         return result;
     }
+
+    public InetSocketAddress getTarget() {
+        return target;
+    }
+
+    public InetSocketAddress getVia() {
+        return via;
+    }
+
+    public int getFlags() {
+        return flags;
+    }
+
+    public int getMetric() {
+        return metric;
+    }
 }