Imported Upstream version 1.1.14

java/CMakeLists.txt

@@ -0,0 +1,91 @@
+cmake_minimum_required(VERSION 3.2)
+
+project(ZeroTierOneJNI)
+
+find_package(Java COMPONENTS Development)
+message("JAVA_HOME: $ENV{JAVA_HOME}")
+
+if(WIN32)
+set(Java_INCLUDE_DIRS $ENV{JAVA_HOME}/include)
+endif()
+
+if(APPLE)
+set(Java_INCLUDE_DIRS "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/System/Library/Frameworks/JavaVM.framework/Headers")
+endif()
+
+message("Java Include Dirs: ${Java_INCLUDE_DIRS}")
+
+if(WIN32)
+    add_definitions(-DNOMINMAX)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHsc /W3 /MP")
+endif()
+
+if(APPLE)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -arch i386 -arch x86_64 -Wall -O3 -flto -fPIE -fvectorize -fstack-protector -mmacosx-version-min=10.7 -Wno-unused-private-field")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CMAKE_C_FLAGS} -fno-rtti")
+endif()
+
+set(src_files
+    ../ext/lz4/lz4.c
+    ../ext/json-parser/json.c
+    ../ext/http-parser/http_parser.c
+    ../node/C25519.cpp
+    ../node/CertificateOfMembership.cpp
+    ../node/Defaults.cpp
+    ../node/Dictionary.cpp
+    ../node/Identity.cpp
+    ../node/IncomingPacket.cpp
+    ../node/InetAddress.cpp
+    ../node/Multicaster.cpp
+    ../node/Network.cpp
+    ../node/NetworkConfig.cpp
+    ../node/Node.cpp
+    ../node/OutboundMulticast.cpp
+    ../node/Packet.cpp
+    ../node/Peer.cpp
+    ../node/Poly1305.cpp
+    ../node/Salsa20.cpp
+    ../node/SelfAwareness.cpp
+    ../node/SHA512.cpp
+    ../node/Switch.cpp
+    ../node/Topology.cpp
+    ../node/Utils.cpp
+    ../osdep/Http.cpp
+    ../osdep/OSUtils.cpp
+    jni/com_zerotierone_sdk_Node.cpp
+    jni/ZT_jniutils.cpp
+    jni/ZT_jnicache.cpp
+    )
+
+set(include_dirs
+    ${CMAKE_CURRENT_SOURCE_DIR}/../include/
+    ${CMAKE_CURRENT_SOURCE_DIR}/../node/
+    ${Java_INCLUDE_DIRS})
+
+if(WIN32)
+    set(include_dirs
+        ${include_dirs}
+        ${Java_INCLUDE_DIRS}/win32)
+endif()
+
+include_directories(
+    ${include_dirs}
+    )
+
+add_library(${PROJECT_NAME} SHARED ${src_files})
+
+if(APPLE)
+    set_target_properties(${PROJECT_NAME} PROPERTIES SUFFIX ".jnilib")
+endif()
+
+set(link_libs )
+
+if(WIN32)
+    set(link_libs
+        wsock32
+        ws2_32
+
+        )
+endif()
+
+target_link_libraries(${PROJECT_NAME} ${link_libs})

java/README.md

@@ -0,0 +1,17 @@
+ZeroTier One SDK - Android JNI Wrapper
+=====
+
+
+Building
+-----
+
+Reqires:
+
+* JDK
+* ANT
+* Android NDK
+
+Required Environment Variables:
+
+* NDK\_BUILD\_LOC - Path do the ndk-build script in the Android NDK
+* ANDROID\_PLATFORM - path to the directory android.jar lives (on Windows: C:\Users\<username>\AppData\Local\Android\sdk\platforms\android-21)

java/build.xml

@@ -0,0 +1,118 @@
+<project default="build_jar" name="ZeroTierOneSDK" basedir=".">
+    <property environment="env"/>
+
+    <condition property="isWindows">
+      <os family="windows"/>
+    </condition>
+
+    <condition property="isMac">
+      <os family="mac"/>
+    </condition>
+
+    <target name="clean_ant">
+        <delete dir="bin" failonerror="false"/>
+        <delete dir="classes" failonerror="false"/>
+        <delete dir="build_win32" failonerror="false"/>
+        <delete dir="build_win64" failonerror="false"/>
+        <delete dir="mac32_64" failonerror="false"/>
+        <delete dir="libs" failonerror="false"/>
+        <delete dir="obj" failonerror="false"/>
+    </target>
+
+    <target name="build_java">
+      <echo message="os.name          = ${os.name}"/>
+        <echo message="os.arch          = ${os.arch}"/>
+        <echo message="ant.java.version = ${ant.java.version}"/>
+        <echo message="java.version     = ${java.version}"/>
+        <echo message="ndk.loc          = ${env.NDK_BUILD_LOC}"/>
+        <echo message="sdk.loc          = ${env.ANDROID_PLATFORM}"/>
+        <echo message="user.dir         = ${user.dir}"/>
+        <echo message="zt1.dir          = ${env.ZT}"/>
+        <mkdir dir="bin"/>
+        <mkdir dir="classes"/>
+        <javac srcdir="src"
+               destdir="classes"
+               source="1.7"
+               target="1.7"
+               classpath="${env.ANDROID_PLATFORM}/android.jar"
+               includeantruntime="false"/>
+    </target>
+
+    <target name="build_android">
+        <exec dir="jni" executable="${env.NDK_BUILD_LOC}" failonerror="true">
+            <arg value="ZT1=${env.ZT}"/>
+            <arg value="V=1"/>
+            <!-- <arg value="NDK_DEBUG=1"/> -->
+        </exec>
+        <copy file="libs/arm64-v8a/libZeroTierOneJNI.so"
+              tofile="classes/lib/arm64-v8a/libZeroTierOneJNI.so"
+              overwrite="true"/>
+        <copy file="libs/armeabi/libZeroTierOneJNI.so" 
+              tofile="classes/lib/armeabi/libZeroTierOneJNI.so"
+              overwrite="true"/>
+        <copy file="libs/armeabi-v7a/libZeroTierOneJNI.so"
+              tofile="classes/lib/armeabi-v7a/libZeroTierOneJNI.so"
+              overwrite="true"/>
+        <copy file="libs/mips/libZeroTierOneJNI.so"
+              tofile="classes/lib/mips/libZeroTierOneJNI.so"
+              overwrite="true"/>
+        <copy file="libs/mips64/libZeroTierOneJNI.so"
+              tofile="classes/lib/mips64/libZeroTierOne.so"
+              overwrite="true"/>
+        <copy file="libs/x86/libZeroTierOneJNI.so"
+              tofile="classes/lib/x86/libZeroTierOneJNI.so"
+              overwrite="true"/>
+        <copy file="libs/x86_64/libZeroTierOneJNI.so"
+              tofile="classes/lib/x86_64/libZeroTierOneJNI.so"
+              overwrite="true"/>
+    </target>
+
+
+    <target name="windows" if="isWindows">
+      <mkdir dir="build_win32"/>
+      <exec dir="build_win32/" executable="cmake" failonerror="true">
+        <arg line=".. -G&quot;Visual Studio 11 2012&quot; -DCMAKE_BUILD_TYPE=Release"/>
+      </exec>
+      <exec dir="build_win32/" executable="cmake" failonerror="true">
+        <arg line="--build . --config Release"/>
+      </exec>
+      <copy file="build_win32/Release/ZeroTierOneJNI.dll"
+            tofile="classes/lib/ZeroTierOneJNI_win32.dll"
+            overwrite="true"/>
+
+      <mkdir dir="build_win64"/>
+      <exec dir="build_win64/" executable="cmake" failonerror="true">
+        <arg line=".. -G&quot;Visual Studio 11 2012 Win64&quot; -DCMAKE_BUILD_TYPE=Release"/>
+      </exec>
+      <exec dir="build_win64/" executable="cmake" failonerror="true">
+        <arg line="--build . --config Release"/>
+      </exec>
+      <copy file="build_win64/Release/ZeroTierOneJNI.dll"
+            tofile="classes/lib/ZeroTierOneJNI_win64.dll"
+            overwrite="true"/>
+    </target>
+
+    <target name="mac" if="isMac">
+      <mkdir dir="mac32_64"/>
+      <exec dir="mac32_64/" executable="cmake" failonerror="true">
+        <arg line=".. -DCMAKE_BUILD_TYPE=Release"/>
+      </exec>
+      <exec dir="mac32_64/" executable="cmake" failonerror="true">
+        <arg line="--build . --config Release"/>
+      </exec>
+      <copy file="mac32_64/libZeroTierOneJNI.jnilib"
+            tofile="classes/lib/libZeroTierOneJNI.jnilib"
+            overwrite="true"/>
+    </target>
+
+    <target name="build_jar" depends="build_java,build_android,windows,mac">
+        <jar destfile="bin/ZeroTierOneSDK.jar" basedir="classes"/>
+    </target>
+
+    <target name="docs">
+      <echo message="Generating Javadocs"/>
+      <mkdir dir="doc/"/>
+      <javadoc sourcepath="src/"
+               destdir="doc/"/>
+    </target>
+</project>

java/jni/Android.mk

@@ -0,0 +1,46 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := ZeroTierOneJNI
+LOCAL_C_INCLUDES := $(ZT1)/include
+LOCAL_C_INCLUDES += $(ZT1)/node
+LOCAL_LDLIBS := -llog
+# LOCAL_CFLAGS := -g
+
+# ZeroTierOne SDK source files
+LOCAL_SRC_FILES := \
+	$(ZT1)/ext/lz4/lz4.c \
+	$(ZT1)/ext/json-parser/json.c \
+	$(ZT1)/ext/http-parser/http_parser.c \
+	$(ZT1)/node/C25519.cpp \
+	$(ZT1)/node/CertificateOfMembership.cpp \
+	$(ZT1)/node/DeferredPackets.cpp \
+	$(ZT1)/node/Identity.cpp \
+	$(ZT1)/node/IncomingPacket.cpp \
+	$(ZT1)/node/InetAddress.cpp \
+	$(ZT1)/node/Multicaster.cpp \
+	$(ZT1)/node/Network.cpp \
+	$(ZT1)/node/NetworkConfig.cpp \
+	$(ZT1)/node/Node.cpp \
+	$(ZT1)/node/OutboundMulticast.cpp \
+	$(ZT1)/node/Packet.cpp \
+	$(ZT1)/node/Path.cpp \
+	$(ZT1)/node/Peer.cpp \
+	$(ZT1)/node/Poly1305.cpp \
+	$(ZT1)/node/Salsa20.cpp \
+	$(ZT1)/node/SelfAwareness.cpp \
+	$(ZT1)/node/SHA512.cpp \
+	$(ZT1)/node/Switch.cpp \
+	$(ZT1)/node/Topology.cpp \
+	$(ZT1)/node/Utils.cpp \
+	$(ZT1)/osdep/Http.cpp \
+	$(ZT1)/osdep/OSUtils.cpp
+
+# JNI Files
+LOCAL_SRC_FILES += \
+	com_zerotierone_sdk_Node.cpp \
+	ZT_jniutils.cpp \
+	ZT_jnilookup.cpp
+
+include $(BUILD_SHARED_LIBRARY)

java/jni/Application.mk

@@ -0,0 +1,5 @@
+# NDK_TOOLCHAIN_VERSION := clang3.5
+APP_STL := gnustl_static
+APP_CPPFLAGS := -O3 -fPIC -fPIE -Wall -fstack-protector -fexceptions -fno-strict-aliasing -Wno-deprecated-register -DZT_NO_TYPE_PUNNING=1
+APP_PLATFORM := android-14
+APP_ABI := all

java/jni/ZT_jnilookup.cpp

@@ -0,0 +1,158 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+#include "ZT_jnilookup.h"
+#include "ZT_jniutils.h"
+
+JniLookup::JniLookup()
+    : m_jvm(NULL)
+{
+    LOGV("JNI Cache Created");
+}
+
+JniLookup::JniLookup(JavaVM *jvm)
+    : m_jvm(jvm)
+{
+    LOGV("JNI Cache Created");
+}
+
+JniLookup::~JniLookup()
+{
+    LOGV("JNI Cache Destroyed");
+}
+
+
+void JniLookup::setJavaVM(JavaVM *jvm)
+{ 
+    LOGV("Assigned JVM to object");
+    m_jvm = jvm; 
+}
+
+
+jclass JniLookup::findClass(const std::string &name)
+{
+    if(!m_jvm)
+        return NULL;
+
+    // get the class from the JVM
+    JNIEnv *env = NULL;
+    if(m_jvm->GetEnv((void**)&env, JNI_VERSION_1_6) != JNI_OK)
+    {
+        LOGE("Error retreiving JNI Environment");
+        return NULL;
+    }
+
+    jclass cls = env->FindClass(name.c_str());
+    if(env->ExceptionCheck())
+    {
+        LOGE("Error finding class: %s", name.c_str());
+        return NULL;
+    }
+
+    return cls;
+}
+
+
+jmethodID JniLookup::findMethod(jclass cls, const std::string &methodName, const std::string &methodSig)
+{
+    if(!m_jvm)
+        return NULL;
+
+    JNIEnv *env = NULL;
+    if(m_jvm->GetEnv((void**)&env, JNI_VERSION_1_6) != JNI_OK)
+    {
+        return NULL;
+    }
+
+    jmethodID mid = env->GetMethodID(cls, methodName.c_str(), methodSig.c_str());
+    if(env->ExceptionCheck())
+    {
+        return NULL;
+    }
+
+    return mid;
+}
+
+jmethodID JniLookup::findStaticMethod(jclass cls, const std::string &methodName, const std::string &methodSig)
+{
+    if(!m_jvm)
+        return NULL;
+
+    JNIEnv *env = NULL;
+    if(m_jvm->GetEnv((void**)&env, JNI_VERSION_1_6) != JNI_OK)
+    {
+        return NULL;
+    }
+
+    jmethodID mid = env->GetStaticMethodID(cls, methodName.c_str(), methodSig.c_str());
+    if(env->ExceptionCheck())
+    {
+        return NULL;
+    }
+
+    return mid;
+}
+
+jfieldID JniLookup::findField(jclass cls, const std::string &fieldName, const std::string &typeStr)
+{
+    if(!m_jvm)
+        return NULL;
+
+    JNIEnv *env = NULL;
+    if(m_jvm->GetEnv((void**)&env, JNI_VERSION_1_6) != JNI_OK)
+    {
+        return NULL;
+    }
+
+    jfieldID fid = env->GetFieldID(cls, fieldName.c_str(), typeStr.c_str());
+    if(env->ExceptionCheck())
+    {
+        return NULL;
+    }
+
+    return fid;
+}
+
+jfieldID JniLookup::findStaticField(jclass cls, const std::string &fieldName, const std::string &typeStr)
+{
+    if(!m_jvm)
+        return NULL;
+
+    JNIEnv *env = NULL;
+    if(m_jvm->GetEnv((void**)&env, JNI_VERSION_1_6) != JNI_OK)
+    {
+        return NULL;
+    }
+
+    jfieldID fid = env->GetStaticFieldID(cls, fieldName.c_str(), typeStr.c_str());
+    if(env->ExceptionCheck())
+    {
+        return NULL;
+    }
+
+    return fid;
+}

java/jni/ZT_jnilookup.h

@@ -0,0 +1,54 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+#ifndef ZT_JNILOOKUP_H_
+#define ZT_JNILOOKUP_H_
+
+#include <jni.h>
+#include <map>
+#include <string>
+
+
+
+class JniLookup {
+public:
+    JniLookup();
+    JniLookup(JavaVM *jvm);
+    ~JniLookup();
+
+    void setJavaVM(JavaVM *jvm);
+
+    jclass findClass(const std::string &name);
+    jmethodID findMethod(jclass cls, const std::string &methodName, const std::string &methodSig);
+    jmethodID findStaticMethod(jclass cls, const std::string &methodName, const std::string &methodSig);
+    jfieldID findField(jclass cls, const std::string &fieldName, const std::string &typeStr);
+    jfieldID findStaticField(jclass cls, const std::string &fieldName, const std::string &typeStr);
+private:
+    JavaVM *m_jvm;
+};
+
+#endif

java/jni/ZT_jniutils.cpp

@@ -0,0 +1,836 @@
+#include "ZT_jniutils.h"
+#include "ZT_jnilookup.h"
+#include <string>
+#include <assert.h>
+
+extern JniLookup lookup;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+jobject createResultObject(JNIEnv *env, ZT_ResultCode code)
+{
+    jclass resultClass = NULL;
+    
+    jobject resultObject = NULL;
+
+    resultClass = lookup.findClass("com/zerotier/sdk/ResultCode");
+    if(resultClass == NULL)
+    {
+        LOGE("Couldnt find ResultCode class");
+        return NULL; // exception thrown
+    }
+
+    std::string fieldName;
+    switch(code)
+    {
+    case ZT_RESULT_OK:
+        LOGV("ZT_RESULT_OK");
+        fieldName = "RESULT_OK";
+        break;
+    case ZT_RESULT_FATAL_ERROR_OUT_OF_MEMORY:
+        LOGV("ZT_RESULT_FATAL_ERROR_OUT_OF_MEMORY");
+        fieldName = "RESULT_FATAL_ERROR_OUT_OF_MEMORY";
+        break;
+    case ZT_RESULT_FATAL_ERROR_DATA_STORE_FAILED:
+        LOGV("RESULT_FATAL_ERROR_DATA_STORE_FAILED");
+        fieldName = "RESULT_FATAL_ERROR_DATA_STORE_FAILED";
+        break;
+    case ZT_RESULT_ERROR_NETWORK_NOT_FOUND:
+        LOGV("RESULT_FATAL_ERROR_DATA_STORE_FAILED");
+        fieldName = "RESULT_ERROR_NETWORK_NOT_FOUND";
+        break;
+    case ZT_RESULT_FATAL_ERROR_INTERNAL:
+    default:
+        LOGV("RESULT_FATAL_ERROR_DATA_STORE_FAILED");
+        fieldName = "RESULT_FATAL_ERROR_INTERNAL";
+        break;
+    }
+
+    jfieldID enumField = lookup.findStaticField(resultClass, fieldName.c_str(), "Lcom/zerotier/sdk/ResultCode;");
+    if(env->ExceptionCheck() || enumField == NULL) 
+    {
+        LOGE("Error on FindStaticField");
+        return NULL;
+    }
+
+    resultObject = env->GetStaticObjectField(resultClass, enumField);
+    if(env->ExceptionCheck() || resultObject == NULL) 
+    {
+        LOGE("Error on GetStaticObjectField");
+    }
+    return resultObject;
+}
+
+
+jobject createVirtualNetworkStatus(JNIEnv *env, ZT_VirtualNetworkStatus status)
+{
+    jobject statusObject = NULL;
+
+    jclass statusClass = lookup.findClass("com/zerotier/sdk/VirtualNetworkStatus");
+    if(statusClass == NULL)
+    {
+        return NULL; // exception thrown
+    }
+
+    std::string fieldName;
+    switch(status)
+    {
+    case ZT_NETWORK_STATUS_REQUESTING_CONFIGURATION:
+        fieldName = "NETWORK_STATUS_REQUESTING_CONFIGURATION";
+        break;
+    case ZT_NETWORK_STATUS_OK:
+        fieldName = "NETWORK_STATUS_OK";
+        break;
+    case ZT_NETWORK_STATUS_ACCESS_DENIED:
+        fieldName = "NETWORK_STATUS_ACCESS_DENIED";
+        break;
+    case ZT_NETWORK_STATUS_NOT_FOUND:
+        fieldName = "NETWORK_STATUS_NOT_FOUND";
+        break;
+    case ZT_NETWORK_STATUS_PORT_ERROR:
+        fieldName = "NETWORK_STATUS_PORT_ERROR";
+        break;
+    case ZT_NETWORK_STATUS_CLIENT_TOO_OLD:
+        fieldName = "NETWORK_STATUS_CLIENT_TOO_OLD";
+        break;
+    }
+
+    jfieldID enumField = lookup.findStaticField(statusClass, fieldName.c_str(), "Lcom/zerotier/sdk/VirtualNetworkStatus;");
+
+    statusObject = env->GetStaticObjectField(statusClass, enumField);
+
+    return statusObject;
+}
+
+jobject createEvent(JNIEnv *env, ZT_Event event)
+{
+    jclass eventClass = NULL;
+    jobject eventObject = NULL;
+
+    eventClass = lookup.findClass("com/zerotier/sdk/Event");
+    if(eventClass == NULL)
+    {
+        return NULL;
+    }
+
+    std::string fieldName;
+    switch(event)
+    {
+    case ZT_EVENT_UP:
+        fieldName = "EVENT_UP";
+        break;
+    case ZT_EVENT_OFFLINE:
+        fieldName = "EVENT_OFFLINE";
+        break;
+    case ZT_EVENT_ONLINE:
+        fieldName = "EVENT_ONLINE";
+        break;
+    case ZT_EVENT_DOWN:
+        fieldName = "EVENT_DOWN";
+        break;
+    case ZT_EVENT_FATAL_ERROR_IDENTITY_COLLISION:
+        fieldName = "EVENT_FATAL_ERROR_IDENTITY_COLLISION";
+        break;
+    case ZT_EVENT_TRACE:
+        fieldName = "EVENT_TRACE";
+        break;
+    }
+
+    jfieldID enumField = lookup.findStaticField(eventClass, fieldName.c_str(), "Lcom/zerotier/sdk/Event;");
+
+    eventObject = env->GetStaticObjectField(eventClass, enumField);
+
+    return eventObject;
+}
+
+jobject createPeerRole(JNIEnv *env, ZT_PeerRole role)
+{
+    jclass peerRoleClass = NULL;
+    jobject peerRoleObject = NULL;
+
+    peerRoleClass = lookup.findClass("com/zerotier/sdk/PeerRole");
+    if(peerRoleClass == NULL)
+    {
+        return NULL;
+    }
+
+    std::string fieldName;
+    switch(role)
+    {
+    case ZT_PEER_ROLE_LEAF:
+        fieldName = "PEER_ROLE_LEAF";
+        break;
+    case ZT_PEER_ROLE_RELAY:
+        fieldName = "PEER_ROLE_RELAY";
+        break;
+    case ZT_PEER_ROLE_ROOT:
+        fieldName = "PEER_ROLE_ROOTS";
+        break;
+    }
+
+    jfieldID enumField = lookup.findStaticField(peerRoleClass, fieldName.c_str(), "Lcom/zerotier/sdk/PeerRole;");
+
+    peerRoleObject = env->GetStaticObjectField(peerRoleClass, enumField);
+
+    return peerRoleObject;
+}
+
+jobject createVirtualNetworkType(JNIEnv *env, ZT_VirtualNetworkType type)
+{
+    jclass vntypeClass = NULL;
+    jobject vntypeObject = NULL;
+
+    vntypeClass = lookup.findClass("com/zerotier/sdk/VirtualNetworkType");
+    if(env->ExceptionCheck() || vntypeClass == NULL)
+    {
+        return NULL;
+    }
+
+    std::string fieldName;
+    switch(type)
+    {
+    case ZT_NETWORK_TYPE_PRIVATE:
+        fieldName = "NETWORK_TYPE_PRIVATE";
+        break;
+    case ZT_NETWORK_TYPE_PUBLIC:
+        fieldName = "NETWORK_TYPE_PUBLIC";
+        break;
+    }
+
+    jfieldID enumField = lookup.findStaticField(vntypeClass, fieldName.c_str(), "Lcom/zerotier/sdk/VirtualNetworkType;");
+    vntypeObject = env->GetStaticObjectField(vntypeClass, enumField);
+    return vntypeObject;
+}
+
+jobject createVirtualNetworkConfigOperation(JNIEnv *env, ZT_VirtualNetworkConfigOperation op)
+{
+    jclass vnetConfigOpClass = NULL;
+    jobject vnetConfigOpObject = NULL;
+
+    vnetConfigOpClass = lookup.findClass("com/zerotier/sdk/VirtualNetworkConfigOperation");
+    if(env->ExceptionCheck() || vnetConfigOpClass == NULL)
+    {
+        return NULL;
+    }
+
+    std::string fieldName;
+    switch(op)
+    {
+    case ZT_VIRTUAL_NETWORK_CONFIG_OPERATION_UP:
+        fieldName = "VIRTUAL_NETWORK_CONFIG_OPERATION_UP";
+        break;
+    case ZT_VIRTUAL_NETWORK_CONFIG_OPERATION_CONFIG_UPDATE:
+        fieldName = "VIRTUAL_NETWORK_CONFIG_OPERATION_CONFIG_UPDATE";
+        break;
+    case ZT_VIRTUAL_NETWORK_CONFIG_OPERATION_DOWN:
+        fieldName = "VIRTUAL_NETWORK_CONFIG_OPERATION_DOWN";
+        break;
+    case ZT_VIRTUAL_NETWORK_CONFIG_OPERATION_DESTROY:
+        fieldName = "VIRTUAL_NETWORK_CONFIG_OPERATION_DESTROY";
+        break;
+    }
+
+    jfieldID enumField = lookup.findStaticField(vnetConfigOpClass, fieldName.c_str(), "Lcom/zerotier/sdk/VirtualNetworkConfigOperation;");
+    vnetConfigOpObject = env->GetStaticObjectField(vnetConfigOpClass, enumField);
+    return vnetConfigOpObject;
+}
+
+jobject newInetAddress(JNIEnv *env, const sockaddr_storage &addr)
+{
+    LOGV("newInetAddress");
+    jclass inetAddressClass = NULL;
+    jmethodID inetAddress_getByAddress = NULL;
+
+    inetAddressClass = lookup.findClass("java/net/InetAddress");
+    if(env->ExceptionCheck() || inetAddressClass == NULL)
+    {
+        LOGE("Error finding InetAddress class");
+        return NULL;
+    }
+
+    inetAddress_getByAddress = lookup.findStaticMethod(
+        inetAddressClass, "getByAddress", "([B)Ljava/net/InetAddress;");
+    if(env->ExceptionCheck() || inetAddress_getByAddress == NULL)
+    {
+        LOGE("Erorr finding getByAddress() static method");
+        return NULL;
+    }
+
+    jobject inetAddressObj = NULL;
+    switch(addr.ss_family)
+    {
+        case AF_INET6:
+        {
+            sockaddr_in6 *ipv6 = (sockaddr_in6*)&addr;
+            jbyteArray buff = env->NewByteArray(16);
+            if(buff == NULL)
+            {
+                LOGE("Error creating IPV6 byte array");
+                return NULL;
+            }
+
+            env->SetByteArrayRegion(buff, 0, 16, (jbyte*)ipv6->sin6_addr.s6_addr);
+            inetAddressObj = env->CallStaticObjectMethod(
+                inetAddressClass, inetAddress_getByAddress, buff);
+        }
+        break;
+        case AF_INET:
+        {
+            sockaddr_in *ipv4 = (sockaddr_in*)&addr;
+            jbyteArray buff = env->NewByteArray(4);
+            if(buff == NULL)
+            {
+                LOGE("Error creating IPV4 byte array");
+                return NULL;
+            }
+
+            env->SetByteArrayRegion(buff, 0, 4, (jbyte*)&ipv4->sin_addr);
+            inetAddressObj = env->CallStaticObjectMethod(
+                inetAddressClass, inetAddress_getByAddress, buff);
+        }
+        break;
+    }
+    if(env->ExceptionCheck() || inetAddressObj == NULL) {
+        LOGE("Error creating InetAddress object");
+        return NULL;
+    }
+
+    return inetAddressObj;
+}
+
+jobject newInetSocketAddress(JNIEnv *env, const sockaddr_storage &addr)
+{
+    LOGV("newInetSocketAddress Called");
+    jclass inetSocketAddressClass = NULL;
+    jmethodID inetSocketAddress_constructor = NULL;
+
+    inetSocketAddressClass = lookup.findClass("java/net/InetSocketAddress");
+    if(env->ExceptionCheck() || inetSocketAddressClass == NULL)
+    {
+        LOGE("Error finding InetSocketAddress Class");
+        return NULL;
+    }
+
+    jobject inetAddressObject = newInetAddress(env, addr);
+
+    if(env->ExceptionCheck() || inetAddressObject == NULL)
+    {
+        LOGE("Error creating new inet address");
+        return NULL;
+    }
+
+    inetSocketAddress_constructor = lookup.findMethod(
+        inetSocketAddressClass, "<init>", "(Ljava/net/InetAddress;I)V");
+    if(env->ExceptionCheck() || inetSocketAddress_constructor == NULL)
+    {
+        LOGE("Error finding InetSocketAddress constructor");
+        return NULL;
+    }
+
+    int port = 0;
+    switch(addr.ss_family)
+    {
+        case AF_INET6:
+        {
+            LOGV("IPV6 Address");
+            sockaddr_in6 *ipv6 = (sockaddr_in6*)&addr;
+            port = ntohs(ipv6->sin6_port);
+            LOGV("Port %d", port);
+        }
+        break;
+        case AF_INET:
+        {
+            LOGV("IPV4 Address");
+            sockaddr_in *ipv4 = (sockaddr_in*)&addr;
+            port = ntohs(ipv4->sin_port);
+            LOGV("Port: %d", port);
+        }
+        break;
+        default:
+        {
+            LOGE("ERROR:  addr.ss_family is not set or unknown");
+            break;
+        }
+    };
+
+
+    jobject inetSocketAddressObject = env->NewObject(inetSocketAddressClass, inetSocketAddress_constructor, inetAddressObject, port);
+    if(env->ExceptionCheck() || inetSocketAddressObject == NULL) {
+        LOGE("Error creating InetSocketAddress object");
+    }
+    return inetSocketAddressObject;
+}
+
+jobject newPeerPhysicalPath(JNIEnv *env, const ZT_PeerPhysicalPath &ppp)
+{
+    LOGV("newPeerPhysicalPath Called");
+    jclass pppClass = NULL;
+
+    jfieldID addressField = NULL;
+    jfieldID lastSendField = NULL;
+    jfieldID lastReceiveField = NULL;
+    jfieldID activeField = NULL;
+    jfieldID preferredField = NULL;
+
+    jmethodID ppp_constructor = NULL;
+
+    pppClass = lookup.findClass("com/zerotier/sdk/PeerPhysicalPath");
+    if(env->ExceptionCheck() || pppClass == NULL)
+    {
+        LOGE("Error finding PeerPhysicalPath class");
+        return NULL;
+    }
+
+    addressField = lookup.findField(pppClass, "address", "Ljava/net/InetSocketAddress;");
+    if(env->ExceptionCheck() || addressField == NULL)
+    {
+        LOGE("Error finding address field");
+        return NULL;
+    }
+
+    lastSendField = lookup.findField(pppClass, "lastSend", "J");
+    if(env->ExceptionCheck() || lastSendField == NULL)
+    {
+        LOGE("Error finding lastSend field");
+        return NULL;
+    }
+
+    lastReceiveField = lookup.findField(pppClass, "lastReceive", "J");
+    if(env->ExceptionCheck() || lastReceiveField == NULL)
+    {
+        LOGE("Error finding lastReceive field");
+        return NULL;
+    }
+
+    activeField = lookup.findField(pppClass, "active", "Z");
+    if(env->ExceptionCheck() || activeField == NULL)
+    {
+        LOGE("Error finding active field");
+        return NULL;
+    }
+
+    preferredField = lookup.findField(pppClass, "preferred", "Z");
+    if(env->ExceptionCheck() || preferredField == NULL)
+    {
+        LOGE("Error finding preferred field");
+        return NULL;
+    }
+
+    ppp_constructor = lookup.findMethod(pppClass, "<init>", "()V");
+    if(env->ExceptionCheck() || ppp_constructor == NULL)
+    {
+        LOGE("Error finding PeerPhysicalPath constructor");
+        return NULL;
+    }
+
+    jobject pppObject = env->NewObject(pppClass, ppp_constructor);
+    if(env->ExceptionCheck() || pppObject == NULL)
+    {
+        LOGE("Error creating PPP object");
+        return NULL; // out of memory
+    }
+
+    jobject addressObject = newInetSocketAddress(env, ppp.address);
+    if(env->ExceptionCheck() || addressObject == NULL) {
+        LOGE("Error creating InetSocketAddress object");
+        return NULL;
+    }
+
+    env->SetObjectField(pppObject, addressField, addressObject);
+    env->SetLongField(pppObject, lastSendField, ppp.lastSend);
+    env->SetLongField(pppObject, lastReceiveField, ppp.lastReceive);
+    env->SetBooleanField(pppObject, activeField, ppp.active);
+    env->SetBooleanField(pppObject, preferredField, ppp.preferred);
+
+    if(env->ExceptionCheck()) {
+        LOGE("Exception assigning fields to PeerPhysicalPath object");
+    }
+
+    return pppObject;
+}
+
+jobject newPeer(JNIEnv *env, const ZT_Peer &peer) 
+{
+    LOGV("newPeer called");
+
+    jclass peerClass = NULL;
+
+    jfieldID addressField = NULL;
+    jfieldID lastUnicastFrameField = NULL;
+    jfieldID lastMulticastFrameField = NULL;
+    jfieldID versionMajorField = NULL;
+    jfieldID versionMinorField = NULL;
+    jfieldID versionRevField = NULL;
+    jfieldID latencyField = NULL;
+    jfieldID roleField = NULL;
+    jfieldID pathsField = NULL;
+
+    jmethodID peer_constructor = NULL;
+
+    peerClass = lookup.findClass("com/zerotier/sdk/Peer");
+    if(env->ExceptionCheck() || peerClass == NULL)
+    {
+        LOGE("Error finding Peer class");
+        return NULL;
+    }
+
+    addressField = lookup.findField(peerClass, "address", "J");
+    if(env->ExceptionCheck() || addressField == NULL)
+    {
+        LOGE("Error finding address field of Peer object");
+        return NULL;
+    }
+
+    lastUnicastFrameField = lookup.findField(peerClass, "lastUnicastFrame", "J");
+    if(env->ExceptionCheck() || lastUnicastFrameField == NULL)
+    {
+        LOGE("Error finding lastUnicastFrame field of Peer object");
+        return NULL;
+    }
+
+    lastMulticastFrameField = lookup.findField(peerClass, "lastMulticastFrame", "J");
+    if(env->ExceptionCheck() || lastMulticastFrameField == NULL)
+    {
+        LOGE("Error finding lastMulticastFrame field of Peer object");
+        return NULL;
+    }
+
+    versionMajorField = lookup.findField(peerClass, "versionMajor", "I");
+    if(env->ExceptionCheck() || versionMajorField == NULL)
+    {
+        LOGE("Error finding versionMajor field of Peer object");
+        return NULL;
+    }
+
+    versionMinorField = lookup.findField(peerClass, "versionMinor", "I");
+    if(env->ExceptionCheck() || versionMinorField == NULL)
+    {
+        LOGE("Error finding versionMinor field of Peer object");
+        return NULL;
+    }
+
+    versionRevField = lookup.findField(peerClass, "versionRev", "I");
+    if(env->ExceptionCheck() || versionRevField == NULL)
+    {
+        LOGE("Error finding versionRev field of Peer object");
+        return NULL;
+    }
+
+    latencyField = lookup.findField(peerClass, "latency", "I");
+    if(env->ExceptionCheck() || latencyField == NULL)
+    {
+        LOGE("Error finding latency field of Peer object");
+        return NULL;
+    }
+
+    roleField = lookup.findField(peerClass, "role", "Lcom/zerotier/sdk/PeerRole;");
+    if(env->ExceptionCheck() || roleField == NULL)
+    {
+        LOGE("Error finding role field of Peer object");
+        return NULL;
+    }
+
+    pathsField = lookup.findField(peerClass, "paths", "[Lcom/zerotier/sdk/PeerPhysicalPath;");
+    if(env->ExceptionCheck() || pathsField == NULL)
+    {
+        LOGE("Error finding paths field of Peer object");
+        return NULL;
+    }
+
+    peer_constructor = lookup.findMethod(peerClass, "<init>", "()V");
+    if(env->ExceptionCheck() || peer_constructor == NULL)
+    {
+        LOGE("Error finding Peer constructor");
+        return NULL;
+    }
+
+    jobject peerObject = env->NewObject(peerClass, peer_constructor);
+    if(env->ExceptionCheck() || peerObject == NULL)
+    {
+        LOGE("Error creating Peer object");
+        return NULL; // out of memory
+    }
+
+    env->SetLongField(peerObject, addressField, (jlong)peer.address);
+    env->SetLongField(peerObject, lastUnicastFrameField, (jlong)peer.lastUnicastFrame);
+    env->SetLongField(peerObject, lastMulticastFrameField, (jlong)peer.lastMulticastFrame);
+    env->SetIntField(peerObject, versionMajorField, peer.versionMajor);
+    env->SetIntField(peerObject, versionMinorField, peer.versionMinor);
+    env->SetIntField(peerObject, versionRevField, peer.versionRev);
+    env->SetIntField(peerObject, latencyField, peer.latency);
+    env->SetObjectField(peerObject, roleField, createPeerRole(env, peer.role));
+
+    jclass peerPhysicalPathClass = lookup.findClass("com/zerotier/sdk/PeerPhysicalPath");
+    if(env->ExceptionCheck() || peerPhysicalPathClass == NULL)
+    {
+        LOGE("Error finding PeerPhysicalPath class");
+        return NULL;
+    }
+
+    jobjectArray arrayObject = env->NewObjectArray(
+        peer.pathCount, peerPhysicalPathClass, NULL);
+    if(env->ExceptionCheck() || arrayObject == NULL) 
+    {
+        LOGE("Error creating PeerPhysicalPath[] array");
+        return NULL;
+    }
+
+    for(unsigned int i = 0; i < peer.pathCount; ++i)
+    {
+        jobject path = newPeerPhysicalPath(env, peer.paths[i]);
+
+        env->SetObjectArrayElement(arrayObject, i, path);
+        if(env->ExceptionCheck()) {
+            LOGE("exception assigning PeerPhysicalPath to array");
+            break;
+        }
+    }
+
+    env->SetObjectField(peerObject, pathsField, arrayObject);
+
+    return peerObject;
+}
+
+jobject newNetworkConfig(JNIEnv *env, const ZT_VirtualNetworkConfig &vnetConfig)
+{
+    jclass vnetConfigClass = NULL;
+    jmethodID vnetConfig_constructor = NULL;
+    jfieldID nwidField = NULL;
+    jfieldID macField = NULL;
+    jfieldID nameField = NULL;
+    jfieldID statusField = NULL;
+    jfieldID typeField = NULL;
+    jfieldID mtuField = NULL;
+    jfieldID dhcpField = NULL;
+    jfieldID bridgeField = NULL;
+    jfieldID broadcastEnabledField = NULL;
+    jfieldID portErrorField = NULL;
+    jfieldID netconfRevisionField = NULL;
+    jfieldID assignedAddressesField = NULL;
+
+    vnetConfigClass = lookup.findClass("com/zerotier/sdk/VirtualNetworkConfig");
+    if(vnetConfigClass == NULL)
+    {
+        LOGE("Couldn't find com.zerotier.sdk.VirtualNetworkConfig");
+        return NULL;
+    }
+
+    vnetConfig_constructor = lookup.findMethod(
+        vnetConfigClass, "<init>", "()V");
+    if(env->ExceptionCheck() || vnetConfig_constructor == NULL)
+    {
+        LOGE("Couldn't find VirtualNetworkConfig Constructor");
+        return NULL;
+    }
+
+    jobject vnetConfigObj = env->NewObject(vnetConfigClass, vnetConfig_constructor);
+    if(env->ExceptionCheck() || vnetConfigObj == NULL)
+    {
+        LOGE("Error creating new VirtualNetworkConfig object");
+        return NULL;
+    }
+
+    nwidField = lookup.findField(vnetConfigClass, "nwid", "J");
+    if(env->ExceptionCheck() || nwidField == NULL)
+    {
+        LOGE("Error getting nwid field");
+        return NULL;
+    }
+
+    macField = lookup.findField(vnetConfigClass, "mac", "J");
+    if(env->ExceptionCheck() || macField == NULL)
+    {
+        LOGE("Error getting mac field");
+        return NULL;
+    }
+
+    nameField = lookup.findField(vnetConfigClass, "name", "Ljava/lang/String;");
+    if(env->ExceptionCheck() || nameField == NULL)
+    {
+        LOGE("Error getting name field");
+        return NULL;
+    }
+
+    statusField = lookup.findField(vnetConfigClass, "status", "Lcom/zerotier/sdk/VirtualNetworkStatus;");
+    if(env->ExceptionCheck() || statusField == NULL)
+    {
+        LOGE("Error getting status field");
+        return NULL;
+    }
+
+    typeField = lookup.findField(vnetConfigClass, "type", "Lcom/zerotier/sdk/VirtualNetworkType;");
+    if(env->ExceptionCheck() || typeField == NULL)
+    {
+        LOGE("Error getting type field");
+        return NULL;
+    }
+
+    mtuField = lookup.findField(vnetConfigClass, "mtu", "I");
+    if(env->ExceptionCheck() || mtuField == NULL)
+    {
+        LOGE("Error getting mtu field");
+        return NULL;
+    }
+
+    dhcpField = lookup.findField(vnetConfigClass, "dhcp", "Z");
+    if(env->ExceptionCheck() || dhcpField == NULL)
+    {
+        LOGE("Error getting dhcp field");
+        return NULL;
+    }
+
+    bridgeField = lookup.findField(vnetConfigClass, "bridge", "Z");
+    if(env->ExceptionCheck() || bridgeField == NULL)
+    {
+        LOGE("Error getting bridge field");
+        return NULL;
+    }
+
+    broadcastEnabledField = lookup.findField(vnetConfigClass, "broadcastEnabled", "Z");
+    if(env->ExceptionCheck() || broadcastEnabledField == NULL)
+    {
+        LOGE("Error getting broadcastEnabled field");
+        return NULL;
+    }
+
+    portErrorField = lookup.findField(vnetConfigClass, "portError", "I");
+    if(env->ExceptionCheck() || portErrorField == NULL)
+    {
+        LOGE("Error getting portError field");
+        return NULL;
+    }
+
+    netconfRevisionField = lookup.findField(vnetConfigClass, "netconfRevision", "J");
+    if(env->ExceptionCheck() || netconfRevisionField == NULL)
+    {
+        LOGE("Error getting netconfRevision field");
+        return NULL;
+    }
+
+    assignedAddressesField = lookup.findField(vnetConfigClass, "assignedAddresses", "[Ljava/net/InetSocketAddress;");
+    if(env->ExceptionCheck() || assignedAddressesField == NULL)
+    {
+        LOGE("Error getting assignedAddresses field");
+        return NULL;
+    }
+
+    env->SetLongField(vnetConfigObj, nwidField, vnetConfig.nwid);
+    env->SetLongField(vnetConfigObj, macField, vnetConfig.mac);
+    jstring nameStr = env->NewStringUTF(vnetConfig.name);
+    if(env->ExceptionCheck() || nameStr == NULL)
+    {
+        return NULL; // out of memory
+    }
+    env->SetObjectField(vnetConfigObj, nameField, nameStr);
+
+    jobject statusObject = createVirtualNetworkStatus(env, vnetConfig.status);
+    if(env->ExceptionCheck() || statusObject == NULL)
+    {
+        return NULL;
+    }
+    env->SetObjectField(vnetConfigObj, statusField, statusObject);
+
+    jobject typeObject = createVirtualNetworkType(env, vnetConfig.type);
+    if(env->ExceptionCheck() || typeObject == NULL)
+    {
+        return NULL;
+    }
+    env->SetObjectField(vnetConfigObj, typeField, typeObject);
+
+    env->SetIntField(vnetConfigObj, mtuField, (int)vnetConfig.mtu);
+    env->SetBooleanField(vnetConfigObj, dhcpField, vnetConfig.dhcp);
+    env->SetBooleanField(vnetConfigObj, bridgeField, vnetConfig.bridge);
+    env->SetBooleanField(vnetConfigObj, broadcastEnabledField, vnetConfig.broadcastEnabled);
+    env->SetIntField(vnetConfigObj, portErrorField, vnetConfig.portError);
+
+    jclass inetSocketAddressClass = lookup.findClass("java/net/InetSocketAddress");
+    if(env->ExceptionCheck() || inetSocketAddressClass == NULL)
+    {
+        LOGE("Error finding InetSocketAddress class");
+        return NULL;
+    }
+
+    jobjectArray assignedAddrArrayObj = env->NewObjectArray(
+        vnetConfig.assignedAddressCount, inetSocketAddressClass, NULL);
+    if(env->ExceptionCheck() || assignedAddrArrayObj == NULL)
+    {
+        LOGE("Error creating InetSocketAddress[] array");
+        return NULL;
+    }
+
+    for(unsigned int i = 0; i < vnetConfig.assignedAddressCount; ++i)
+    {
+        jobject inetAddrObj = newInetSocketAddress(env, vnetConfig.assignedAddresses[i]);
+        env->SetObjectArrayElement(assignedAddrArrayObj, i, inetAddrObj);
+        if(env->ExceptionCheck())
+        {
+            LOGE("Error assigning InetSocketAddress to array");
+            return NULL;
+        }
+    }
+
+    env->SetObjectField(vnetConfigObj, assignedAddressesField, assignedAddrArrayObj);
+
+    return vnetConfigObj;
+}
+
+jobject newVersion(JNIEnv *env, int major, int minor, int rev)
+{
+   // create a com.zerotier.sdk.Version object
+    jclass versionClass = NULL;
+    jmethodID versionConstructor = NULL;
+
+    versionClass = lookup.findClass("com/zerotier/sdk/Version");
+    if(env->ExceptionCheck() || versionClass == NULL)
+    {
+        return NULL;
+    }
+
+    versionConstructor = lookup.findMethod(
+        versionClass, "<init>", "()V");
+    if(env->ExceptionCheck() || versionConstructor == NULL)
+    {
+        return NULL;
+    }
+
+    jobject versionObj = env->NewObject(versionClass, versionConstructor);
+    if(env->ExceptionCheck() || versionObj == NULL)
+    {
+        return NULL;
+    }
+
+    // copy data to Version object
+    jfieldID majorField = NULL;
+    jfieldID minorField = NULL;
+    jfieldID revisionField = NULL;
+
+    majorField = lookup.findField(versionClass, "major", "I");
+    if(env->ExceptionCheck() || majorField == NULL)
+    {
+        return NULL;
+    }
+
+    minorField = lookup.findField(versionClass, "minor", "I");
+    if(env->ExceptionCheck() || minorField == NULL)
+    {
+        return NULL;
+    }
+
+    revisionField = lookup.findField(versionClass, "revision", "I");
+    if(env->ExceptionCheck() || revisionField == NULL)
+    {
+        return NULL;
+    }
+
+    env->SetIntField(versionObj, majorField, (jint)major);
+    env->SetIntField(versionObj, minorField, (jint)minor);
+    env->SetIntField(versionObj, revisionField, (jint)rev);
+
+    return versionObj;
+}
+
+#ifdef __cplusplus
+}
+#endif

java/jni/ZT_jniutils.h

@@ -0,0 +1,49 @@
+#ifndef ZT_jniutils_h_
+#define ZT_jniutils_h_
+#include <stdio.h>
+#include <jni.h>
+#include <ZeroTierOne.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define LOG_TAG "ZeroTierOneJNI"
+
+#if __ANDROID__
+#include <android/log.h>
+#define LOGV(...) ((void)__android_log_print(ANDROID_LOG_VERBOSE, LOG_TAG, __VA_ARGS__))
+#define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, LOG_TAG, __VA_ARGS__))
+#define LOGD(...) ((void)__android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__))
+#define LOGE(...) ((void)__android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__))
+#else
+#define LOGV(...) fprintf(stdout, __VA_ARGS__)
+#define LOGI(...) fprintf(stdout, __VA_ARGS__)
+#define LOGD(...) fprintf(stdout, __VA_ARGS__)
+#define LOGE(...) fprintf(stdout, __VA_ARGS__)
+#endif
+
+jobject createResultObject(JNIEnv *env, ZT_ResultCode code);
+jobject createVirtualNetworkStatus(JNIEnv *env, ZT_VirtualNetworkStatus status);
+jobject createVirtualNetworkType(JNIEnv *env, ZT_VirtualNetworkType type);
+jobject createEvent(JNIEnv *env, ZT_Event event);
+jobject createPeerRole(JNIEnv *env, ZT_PeerRole role);
+jobject createVirtualNetworkConfigOperation(JNIEnv *env, ZT_VirtualNetworkConfigOperation op);
+
+jobject newInetSocketAddress(JNIEnv *env, const sockaddr_storage &addr);
+jobject newInetAddress(JNIEnv *env, const sockaddr_storage &addr);
+
+jobject newMulticastGroup(JNIEnv *env, const ZT_MulticastGroup &mc);
+
+jobject newPeer(JNIEnv *env, const ZT_Peer &peer);
+jobject newPeerPhysicalPath(JNIEnv *env, const ZT_PeerPhysicalPath &ppp);
+
+jobject newNetworkConfig(JNIEnv *env, const ZT_VirtualNetworkConfig &config);
+
+jobject newVersion(JNIEnv *env, int major, int minor, int rev);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

java/jni/com_zerotierone_sdk_Node.h

@@ -0,0 +1,133 @@
+/* DO NOT EDIT THIS FILE - it is machine generated */
+#include <jni.h>
+/* Header for class com_zerotier_sdk_Node */
+
+#ifndef _Included_com_zerotierone_sdk_Node
+#define _Included_com_zerotierone_sdk_Node
+#ifdef __cplusplus
+extern "C" {
+#endif
+/*
+ * Class:     com_zerotier_sdk_Node
+ * Method:    node_init
+ * Signature: (J)Lcom/zerotier/sdk/ResultCode;
+ */
+JNIEXPORT jobject JNICALL Java_com_zerotier_sdk_Node_node_1init
+  (JNIEnv *, jobject, jlong);
+
+/*
+ * Class:     com_zerotier_sdk_Node
+ * Method:    node_delete
+ * Signature: (J)V
+ */
+JNIEXPORT void JNICALL Java_com_zerotier_sdk_Node_node_1delete
+  (JNIEnv *, jobject, jlong);
+
+/*
+ * Class:     com_zerotier_sdk_Node
+ * Method:    processVirtualNetworkFrame
+ * Signature: (JJJJJII[B[J)Lcom/zerotier/sdk/ResultCode;
+ */
+JNIEXPORT jobject JNICALL Java_com_zerotier_sdk_Node_processVirtualNetworkFrame
+  (JNIEnv *, jobject, jlong, jlong, jlong, jlong, jlong, jint, jint, jbyteArray, jlongArray);
+
+/*
+ * Class:     com_zerotier_sdk_Node
+ * Method:    processWirePacket
+ * Signature: (JJLjava/net/InetSockAddress;Ljava/net/InetSockAddress;[B[J)Lcom/zerotier/sdk/ResultCode;
+ */
+JNIEXPORT jobject JNICALL Java_com_zerotier_sdk_Node_processWirePacket
+  (JNIEnv *, jobject, jlong, jlong, jobject, jobject, jbyteArray, jlongArray);
+
+/*
+ * Class:     com_zerotier_sdk_Node
+ * Method:    processBackgroundTasks
+ * Signature: (JJ[J)Lcom/zerotier/sdk/ResultCode;
+ */
+JNIEXPORT jobject JNICALL Java_com_zerotier_sdk_Node_processBackgroundTasks
+  (JNIEnv *, jobject, jlong, jlong, jlongArray);
+
+/*
+ * Class:     com_zerotier_sdk_Node
+ * Method:    join
+ * Signature: (JJ)Lcom/zerotier/sdk/ResultCode;
+ */
+JNIEXPORT jobject JNICALL Java_com_zerotier_sdk_Node_join
+  (JNIEnv *, jobject, jlong, jlong);
+
+/*
+ * Class:     com_zerotier_sdk_Node
+ * Method:    leave
+ * Signature: (JJ)Lcom/zerotier/sdk/ResultCode;
+ */
+JNIEXPORT jobject JNICALL Java_com_zerotier_sdk_Node_leave
+  (JNIEnv *, jobject, jlong, jlong);
+
+/*
+ * Class:     com_zerotier_sdk_Node
+ * Method:    multicastSubscribe
+ * Signature: (JJJJ)Lcom/zerotier/sdk/ResultCode;
+ */
+JNIEXPORT jobject JNICALL Java_com_zerotier_sdk_Node_multicastSubscribe
+  (JNIEnv *, jobject, jlong, jlong, jlong, jlong);
+
+/*
+ * Class:     com_zerotier_sdk_Node
+ * Method:    multicastUnsubscribe
+ * Signature: (JJJJ)Lcom/zerotier/sdk/ResultCode;
+ */
+JNIEXPORT jobject JNICALL Java_com_zerotier_sdk_Node_multicastUnsubscribe
+  (JNIEnv *, jobject, jlong, jlong, jlong, jlong);
+
+/*
+ * Class:     com_zerotier_sdk_Node
+ * Method:    address
+ * Signature: (J)J
+ */
+JNIEXPORT jlong JNICALL Java_com_zerotier_sdk_Node_address
+  (JNIEnv *, jobject, jlong);
+
+/*
+ * Class:     com_zerotier_sdk_Node
+ * Method:    status
+ * Signature: (J)Lcom/zerotier/sdk/NodeStatus;
+ */
+JNIEXPORT jobject JNICALL Java_com_zerotier_sdk_Node_status
+  (JNIEnv *, jobject, jlong);
+
+/*
+ * Class:     com_zerotier_sdk_Node
+ * Method:    networkConfig
+ * Signature: (JJ)Lcom/zerotier/sdk/VirtualNetworkConfig;
+ */
+JNIEXPORT jobject JNICALL Java_com_zerotier_sdk_Node_networkConfig
+  (JNIEnv *, jobject, jlong, jlong);
+
+/*
+ * Class:     com_zerotier_sdk_Node
+ * Method:    version
+ * Signature: ()Lcom/zerotier/sdk/Version;
+ */
+JNIEXPORT jobject JNICALL Java_com_zerotier_sdk_Node_version
+  (JNIEnv *, jobject);
+
+/*
+ * Class:     com_zerotier_sdk_Node
+ * Method:    peers
+ * Signature: (J)[Lcom/zerotier/sdk/Peer;
+ */
+JNIEXPORT jobjectArray JNICALL Java_com_zerotier_sdk_Node_peers
+  (JNIEnv *, jobject, jlong);
+
+/*
+ * Class:     com_zerotier_sdk_Node
+ * Method:    networks
+ * Signature: (J)[Lcom/zerotier/sdk/VirtualNetworkConfig;
+ */
+JNIEXPORT jobjectArray JNICALL Java_com_zerotier_sdk_Node_networks
+  (JNIEnv *, jobject, jlong);
+
+#ifdef __cplusplus
+}
+#endif
+#endif

java/src/com/zerotier/sdk/DataStoreGetListener.java

@@ -0,0 +1,58 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+package com.zerotier.sdk;
+
+public interface DataStoreGetListener {
+
+    /**
+     * Function to get an object from the data store
+     *
+     * <p>Object names can contain forward slash (/) path separators. They will
+     * never contain .. or backslash (\), so this is safe to map as a Unix-style
+     * path if the underlying storage permits. For security reasons we recommend
+     * returning errors if .. or \ are used.</p>
+     *
+     * <p>The function must return the actual number of bytes read. If the object
+     * doesn't exist, it should return -1. -2 should be returned on other errors
+     * such as errors accessing underlying storage.</p>
+     *
+     * <p>If the read doesn't fit in the buffer, the max number of bytes should be
+     * read. The caller may call the function multiple times to read the whole
+     * object.</p>
+     *
+     * @param name Name of the object in the data store
+     * @param out_buffer buffer to put the object in
+     * @param bufferIndex index in the object to start reading
+     * @param out_objectSize long[1] to be set to the actual size of the object if it exists.
+     * @return the actual number of bytes read.
+     */
+    public long onDataStoreGet(
+            String name,
+            byte[] out_buffer,
+            long bufferIndex,
+            long[] out_objectSize);
+}

java/src/com/zerotier/sdk/DataStorePutListener.java

@@ -0,0 +1,59 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+package com.zerotier.sdk;
+
+public interface DataStorePutListener {
+
+    /**
+     * Function to store an object in the data store
+     *
+     * <p>If secure is true, the file should be set readable and writable only
+     * to the user running ZeroTier One. What this means is platform-specific.</p>
+     *
+     * <p>Name semantics are the same as {@link DataStoreGetListener}. This must return 
+     * zero on success. You can return any OS-specific error code on failure, as these
+     * may be visible in logs or error messages and might aid in debugging.</p>
+     *
+     * @param name Object name
+     * @param buffer data to store
+     * @param secure set to user read/write only.
+     * @return 0 on success.
+     */
+    public int onDataStorePut(
+        String name,
+        byte[] buffer,
+        boolean secure);
+
+    /**
+     * Function to delete an object from the data store
+     * 
+     * @param name Object name
+     * @return 0 on success.
+     */
+    public int onDelete(
+        String name);
+}

java/src/com/zerotier/sdk/Event.java

@@ -0,0 +1,98 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+package com.zerotier.sdk;
+
+public enum Event {
+    /**
+     * Node has been initialized
+     *
+     * This is the first event generated, and is always sent. It may occur
+     * before Node's constructor returns.
+     */
+	EVENT_UP,
+
+    /**
+     * Node is offline -- network does not seem to be reachable by any available strategy
+     */
+	EVENT_OFFLINE,
+
+    /**
+     * Node is online -- at least one upstream node appears reachable
+     *
+     * Meta-data: none
+     */
+    EVENT_ONLINE,
+
+    /**
+     * Node is shutting down
+     * 
+     * <p>This is generated within Node's destructor when it is being shut down.
+     * It's done for convenience, since cleaning up other state in the event
+     * handler may appear more idiomatic.</p>
+     */
+	EVENT_DOWN,
+
+    /**
+     * Your identity has collided with another node's ZeroTier address
+     * 
+     * <p>This happens if two different public keys both hash (via the algorithm
+     * in Identity::generate()) to the same 40-bit ZeroTier address.</p>
+     * 
+     * <p>This is something you should "never" see, where "never" is defined as
+     * once per 2^39 new node initializations / identity creations. If you do
+     * see it, you're going to see it very soon after a node is first
+     * initialized.</p>
+     * 
+     * <p>This is reported as an event rather than a return code since it's
+     * detected asynchronously via error messages from authoritative nodes.</p>
+     * 
+     * <p>If this occurs, you must shut down and delete the node, delete the
+     * identity.secret record/file from the data store, and restart to generate
+     * a new identity. If you don't do this, you will not be able to communicate
+     * with other nodes.</p>
+     * 
+     * <p>We'd automate this process, but we don't think silently deleting
+     * private keys or changing our address without telling the calling code
+     * is good form. It violates the principle of least surprise.</p>
+     * 
+     * <p>You can technically get away with not handling this, but we recommend
+     * doing so in a mature reliable application. Besides, handling this
+     * condition is a good way to make sure it never arises. It's like how
+     * umbrellas prevent rain and smoke detectors prevent fires. They do, right?</p>
+     */
+	EVENT_FATAL_ERROR_IDENTITY_COLLISION,
+
+    /**
+     * Trace (debugging) message
+     *
+     * <p>These events are only generated if this is a TRACE-enabled build.</p>
+     *
+     * <p>Meta-data: {@link String}, TRACE message</p>
+     */
+	EVENT_TRACE
+}

java/src/com/zerotier/sdk/EventListener.java

@@ -0,0 +1,52 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+package com.zerotier.sdk;
+
+import java.net.InetSocketAddress;
+import java.lang.String;
+
+/**
+ * Interface to handle callbacks for ZeroTier One events.
+ */
+public interface EventListener {
+    /**
+     * Callback for events with no other associated metadata
+     * 
+     * @param event {@link Event} enum
+     */
+    public void onEvent(Event event);
+    
+    /**
+     * Trace messages
+     * 
+     * <p>These events are only generated if the underlying ZeroTierOne SDK is a TRACE-enabled build.</p>
+     *
+     * @param message the trace message
+     */
+    public void onTrace(String message);
+}

java/src/com/zerotier/sdk/NativeUtils.java

@@ -0,0 +1,93 @@
+package com.zerotier.sdk;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+ 
+/**
+ * Simple library class for working with JNI (Java Native Interface)
+ * 
+ * @see http://adamheinrich.com/2012/how-to-load-native-jni-library-from-jar
+ *
+ * @author Adam Heirnich <adam@adamh.cz>, http://www.adamh.cz
+ */
+public class NativeUtils {
+ 
+    /**
+     * Private constructor - this class will never be instanced
+     */
+    private NativeUtils() {
+    }
+ 
+    /**
+     * Loads library from current JAR archive
+     * 
+     * The file from JAR is copied into system temporary directory and then loaded. The temporary file is deleted after exiting.
+     * Method uses String as filename because the pathname is "abstract", not system-dependent.
+     * 
+     * @param filename The filename inside JAR as absolute path (beginning with '/'), e.g. /package/File.ext
+     * @throws IOException If temporary file creation or read/write operation fails
+     * @throws IllegalArgumentException If source file (param path) does not exist
+     * @throws IllegalArgumentException If the path is not absolute or if the filename is shorter than three characters (restriction of {@see File#createTempFile(java.lang.String, java.lang.String)}).
+     */
+    public static void loadLibraryFromJar(String path) throws IOException {
+ 
+        if (!path.startsWith("/")) {
+            throw new IllegalArgumentException("The path has to be absolute (start with '/').");
+        }
+ 
+        // Obtain filename from path
+        String[] parts = path.split("/");
+        String filename = (parts.length > 1) ? parts[parts.length - 1] : null;
+ 
+        // Split filename to prexif and suffix (extension)
+        String prefix = "";
+        String suffix = null;
+        if (filename != null) {
+            parts = filename.split("\\.", 2);
+            prefix = parts[0];
+            suffix = (parts.length > 1) ? "."+parts[parts.length - 1] : null; // Thanks, davs! :-)
+        }
+ 
+        // Check if the filename is okay
+        if (filename == null || prefix.length() < 3) {
+            throw new IllegalArgumentException("The filename has to be at least 3 characters long.");
+        }
+ 
+        // Prepare temporary file
+        File temp = File.createTempFile(prefix, suffix);
+        temp.deleteOnExit();
+ 
+        if (!temp.exists()) {
+            throw new FileNotFoundException("File " + temp.getAbsolutePath() + " does not exist.");
+        }
+ 
+        // Prepare buffer for data copying
+        byte[] buffer = new byte[1024];
+        int readBytes;
+ 
+        // Open and check input stream
+        InputStream is = NativeUtils.class.getResourceAsStream(path);
+        if (is == null) {
+            throw new FileNotFoundException("File " + path + " was not found inside JAR.");
+        }
+ 
+        // Open output stream and copy data between source file in JAR and the temporary file
+        OutputStream os = new FileOutputStream(temp);
+        try {
+            while ((readBytes = is.read(buffer)) != -1) {
+                os.write(buffer, 0, readBytes);
+            }
+        } finally {
+            // If read/write fails, close streams safely before throwing an exception
+            os.close();
+            is.close();
+        }
+ 
+        // Finally, load the library
+        System.load(temp.getAbsolutePath());
+    }
+}

java/src/com/zerotier/sdk/Node.java

@@ -0,0 +1,434 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+package com.zerotier.sdk;
+
+import java.net.InetSocketAddress;
+import java.util.ArrayList;
+import java.io.IOException;
+
+/**
+ * A ZeroTier One node
+ */
+public class Node {
+	static {
+        try {
+    		System.loadLibrary("ZeroTierOneJNI");
+        } catch (UnsatisfiedLinkError e) {
+            try { 
+                if(System.getProperty("os.name").startsWith("Windows")) {
+                    System.out.println("Arch: " + System.getProperty("sun.arch.data.model"));
+                    if(System.getProperty("sun.arch.data.model").equals("64")) {
+                        NativeUtils.loadLibraryFromJar("/lib/ZeroTierOneJNI_win64.dll");
+                    } else {
+                        NativeUtils.loadLibraryFromJar("/lib/ZeroTierOneJNI_win32.dll");
+                    }
+                } else if(System.getProperty("os.name").startsWith("Mac")) {
+                    NativeUtils.loadLibraryFromJar("/lib/libZeroTierOneJNI.jnilib");
+                } else {
+                    // TODO: Linux
+                }
+            } catch (IOException ioe) {
+                ioe.printStackTrace();
+            }
+        }
+	}
+
+    private static final String TAG = "NODE";
+
+    /**
+     * Node ID for JNI purposes.
+     * Currently set to the now value passed in at the constructor
+     * 
+     * -1 if the node has already been closed
+     */
+    private long nodeId;
+
+    private final DataStoreGetListener getListener;
+    private final DataStorePutListener putListener;
+    private final PacketSender sender;
+    private final EventListener eventListener;
+    private final VirtualNetworkFrameListener frameListener;
+    private final VirtualNetworkConfigListener configListener;
+    
+    /**
+     * Create a new ZeroTier One node
+     *
+     * <p>Note that this can take a few seconds the first time it's called, as it
+     * will generate an identity.</p>
+     *
+     * @param now Current clock in milliseconds
+     * @param getListener User written instance of the {@link DataStoreGetListener} interface called to get objects from persistent storage.  This instance must be unique per Node object.
+     * @param putListener User written intstance of the {@link DataStorePutListener} interface called to put objects in persistent storage.  This instance must be unique per Node object.
+     * @param sender
+     * @param eventListener User written instance of the {@link EventListener} interface to receive status updates and non-fatal error notices.  This instance must be unique per Node object.
+     * @param frameListener 
+     * @param configListener User written instance of the {@link VirtualNetworkConfigListener} interface to be called when virtual LANs are created, deleted, or their config parameters change.  This instance must be unique per Node object.
+     */
+	public Node(long now,
+                DataStoreGetListener getListener,
+                DataStorePutListener putListener,
+                PacketSender sender,
+                EventListener eventListener,
+                VirtualNetworkFrameListener frameListener,
+                VirtualNetworkConfigListener configListener) throws NodeException
+	{
+        this.nodeId = now;
+
+        this.getListener = getListener;
+        this.putListener = putListener;
+        this.sender = sender;
+        this.eventListener = eventListener;
+        this.frameListener = frameListener;
+        this.configListener = configListener;
+
+        ResultCode rc = node_init(now);
+        if(rc != ResultCode.RESULT_OK)
+        {
+            // TODO: Throw Exception
+            throw new NodeException(rc.toString());
+        }
+	}
+
+    /**
+      * Close this Node.
+      * 
+      * <p>The Node object can no longer be used once this method is called.</p>
+      */
+    public void close() {
+        if(nodeId != -1) {
+            node_delete(nodeId);
+            nodeId = -1;
+        }
+    }
+
+    @Override
+    protected void finalize() {
+        close();
+    }
+
+    /**
+     * Process a frame from a virtual network port
+     *
+     * @param now Current clock in milliseconds
+     * @param nwid ZeroTier 64-bit virtual network ID
+     * @param sourceMac Source MAC address (least significant 48 bits)
+     * @param destMac Destination MAC address (least significant 48 bits)
+     * @param etherType 16-bit Ethernet frame type
+     * @param vlanId 10-bit VLAN ID or 0 if none
+     * @param frameData Frame payload data
+     * @param nextBackgroundTaskDeadline Value/result: set to deadline for next call to processBackgroundTasks()
+     * @return OK (0) or error code if a fatal error condition has occurred
+     */
+    public ResultCode processVirtualNetworkFrame(
+        long now,
+        long nwid,
+        long sourceMac,
+        long destMac,
+        int etherType,
+        int vlanId,
+        byte[] frameData,
+        long[] nextBackgroundTaskDeadline) {
+        return processVirtualNetworkFrame(
+            nodeId, now, nwid, sourceMac, destMac, etherType, vlanId, 
+            frameData, nextBackgroundTaskDeadline);
+    }
+
+    /**
+     * Process a packet received from the physical wire
+     *
+     * @param now Current clock in milliseconds
+     * @param remoteAddress Origin of packet
+     * @param packetData Packet data
+     * @param nextBackgroundTaskDeadline Value/result: set to deadline for next call to processBackgroundTasks()
+     * @return OK (0) or error code if a fatal error condition has occurred
+     */
+    public ResultCode processWirePacket(
+        long now,
+        InetSocketAddress localAddress,
+        InetSocketAddress remoteAddress,
+        byte[] packetData,
+        long[] nextBackgroundTaskDeadline) {
+        return processWirePacket(
+            nodeId, now, localAddress, remoteAddress, packetData, 
+            nextBackgroundTaskDeadline);
+    }
+
+    /**
+     * Perform periodic background operations
+     *
+     * @param now Current clock in milliseconds
+     * @param nextBackgroundTaskDeadline Value/result: set to deadline for next call to processBackgroundTasks()
+     * @return OK (0) or error code if a fatal error condition has occurred
+     */
+    public ResultCode processBackgroundTasks(long now, long[] nextBackgroundTaskDeadline) {
+        return processBackgroundTasks(nodeId, now, nextBackgroundTaskDeadline);
+    }
+
+    /**
+     * Join a network
+     *
+     * <p>This may generate calls to the port config callback before it returns,
+     * or these may be deffered if a netconf is not available yet.</p>
+     *
+     * <p>If we are already a member of the network, nothing is done and OK is
+     * returned.</p>
+     *
+     * @param nwid 64-bit ZeroTier network ID
+     * @return OK (0) or error code if a fatal error condition has occurred
+     */
+    public ResultCode join(long nwid) {
+        return join(nodeId, nwid);
+    }
+
+    /**
+     * Leave a network
+     *
+     * <p>If a port has been configured for this network this will generate a call
+     * to the port config callback with a NULL second parameter to indicate that
+     * the port is now deleted.</p>
+     *
+     * @param nwid 64-bit network ID
+     * @return OK (0) or error code if a fatal error condition has occurred
+     */
+    public ResultCode leave(long nwid) {
+        return leave(nodeId, nwid);
+    }
+
+    /**
+     * Subscribe to an Ethernet multicast group
+     *
+     * <p>For IPv4 ARP, the implementation must subscribe to 0xffffffffffff (the
+     * broadcast address) but with an ADI equal to each IPv4 address in host
+     * byte order. This converts ARP from a non-scalable broadcast protocol to
+     * a scalable multicast protocol with perfect address specificity.</p>
+     *
+     * <p>If this is not done, ARP will not work reliably.</p>
+     *
+     * <p>Multiple calls to subscribe to the same multicast address will have no
+     * effect. It is perfectly safe to do this.</p>
+     *
+     * <p>This does not generate an update call to the {@link VirtualNetworkConfigListener#onNetworkConfigurationUpdated} method.</p>
+     *
+     * @param nwid 64-bit network ID
+     * @param multicastGroup Ethernet multicast or broadcast MAC (least significant 48 bits)
+     * @return OK (0) or error code if a fatal error condition has occurred
+     */
+    public ResultCode multicastSubscribe(
+		long nwid,
+		long multicastGroup) {
+		return multicastSubscribe(nodeId, nwid, multicastGroup, 0);
+	}
+
+    /**
+     * Subscribe to an Ethernet multicast group
+     *
+     * <p>ADI stands for additional distinguishing information. This defaults to zero
+     * and is rarely used. Right now its only use is to enable IPv4 ARP to scale,
+     * and this must be done.</p>
+     *
+     * <p>For IPv4 ARP, the implementation must subscribe to 0xffffffffffff (the
+     * broadcast address) but with an ADI equal to each IPv4 address in host
+     * byte order. This converts ARP from a non-scalable broadcast protocol to
+     * a scalable multicast protocol with perfect address specificity.</p>
+     *
+     * <p>If this is not done, ARP will not work reliably.</p>
+     *
+     * <p>Multiple calls to subscribe to the same multicast address will have no
+     * effect. It is perfectly safe to do this.</p>
+     *
+     * <p>This does not generate an update call to the {@link VirtualNetworkConfigListener#onNetworkConfigurationUpdated} method.</p>
+     *
+     * @param nwid 64-bit network ID
+     * @param multicastGroup Ethernet multicast or broadcast MAC (least significant 48 bits)
+     * @param multicastAdi Multicast ADI (least significant 32 bits only, default: 0)
+     * @return OK (0) or error code if a fatal error condition has occurred
+     */
+    public ResultCode multicastSubscribe(
+        long nwid,
+        long multicastGroup,
+        long multicastAdi) {
+        return multicastSubscribe(nodeId, nwid, multicastGroup, multicastAdi);
+    }
+
+
+    /**
+     * Unsubscribe from an Ethernet multicast group (or all groups)
+     *
+     * <p>If multicastGroup is zero (0), this will unsubscribe from all groups. If
+     * you are not subscribed to a group this has no effect.</p>
+     *
+     * <p>This does not generate an update call to the {@link VirtualNetworkConfigListener#onNetworkConfigurationUpdated} method.</p>
+     *
+     * @param nwid 64-bit network ID
+     * @param multicastGroup Ethernet multicast or broadcast MAC (least significant 48 bits)
+     * @return OK (0) or error code if a fatal error condition has occurred
+     */
+	public ResultCode multicastUnsubscribe(
+		long nwid,
+		long multicastGroup) {
+		return multicastUnsubscribe(nodeId, nwid, multicastGroup, 0);
+	}
+
+    /**
+     * Unsubscribe from an Ethernet multicast group (or all groups)
+     *
+     * <p>If multicastGroup is zero (0), this will unsubscribe from all groups. If
+     * you are not subscribed to a group this has no effect.</p>
+     *
+     * <p>This does not generate an update call to the {@link VirtualNetworkConfigListener#onNetworkConfigurationUpdated} method.</p>
+     *
+     * <p>ADI stands for additional distinguishing information. This defaults to zero
+     * and is rarely used. Right now its only use is to enable IPv4 ARP to scale,
+     * and this must be done.</p>
+     *
+     * @param nwid 64-bit network ID
+     * @param multicastGroup Ethernet multicast or broadcast MAC (least significant 48 bits)
+     * @param multicastAdi Multicast ADI (least significant 32 bits only, default: 0)
+     * @return OK (0) or error code if a fatal error condition has occurred
+     */
+    public ResultCode multicastUnsubscribe(
+        long nwid,
+        long multicastGroup,
+        long multicastAdi) {
+        return multicastUnsubscribe(nodeId, nwid, multicastGroup, multicastAdi);
+    }
+
+    /**
+     * Get this node's 40-bit ZeroTier address
+     *
+     * @return ZeroTier address (least significant 40 bits of 64-bit int)
+     */
+    public long address() {
+        return address(nodeId);
+    }
+
+    /**
+     * Get the status of this node
+     *
+     * @return @{link NodeStatus} struct with the current node status.
+     */
+    public NodeStatus status() {
+        return status(nodeId);
+    }
+
+    /**
+     * Get a list of known peer nodes
+     *
+     * @return List of known peers or NULL on failure
+     */
+    public Peer[] peers() {
+        return peers(nodeId);
+    }
+
+    /**
+     * Get the status of a virtual network
+     *
+     * @param nwid 64-bit network ID
+     * @return {@link VirtualNetworkConfig} or NULL if we are not a member of this network
+     */
+    public VirtualNetworkConfig networkConfig(long nwid) {
+        return networkConfig(nodeId, nwid);
+    }
+
+    /**
+     * Enumerate and get status of all networks
+     *
+     * @return List of networks or NULL on failure
+     */
+    public VirtualNetworkConfig[] networks() {
+        return networks(nodeId);
+    }
+
+    /**
+     * Get ZeroTier One version
+     *
+     * @return {@link Version} object with ZeroTierOne version information.
+     */
+    public Version getVersion() {
+        return version();
+    }
+
+    //
+    // function declarations for JNI
+    //
+    private native ResultCode node_init(long now);
+
+    private native void node_delete(long nodeId);
+
+    private native ResultCode processVirtualNetworkFrame(
+        long nodeId,
+        long now,
+        long nwid,
+        long sourceMac,
+        long destMac,
+        int etherType,
+        int vlanId,
+        byte[] frameData,
+        long[] nextBackgroundTaskDeadline);
+
+    private native ResultCode processWirePacket(
+        long nodeId,
+        long now,
+        InetSocketAddress localAddress,
+        InetSocketAddress remoteAddress,
+        byte[] packetData,
+        long[] nextBackgroundTaskDeadline);
+
+    private native ResultCode processBackgroundTasks(
+        long nodeId,
+        long now,
+        long[] nextBackgroundTaskDeadline);
+
+    private native ResultCode join(long nodeId, long nwid);
+
+    private native ResultCode leave(long nodeId, long nwid);
+
+    private native ResultCode multicastSubscribe(
+        long nodeId,
+        long nwid,
+        long multicastGroup,
+        long multicastAdi);
+
+    private native ResultCode multicastUnsubscribe(
+        long nodeId,
+        long nwid,
+        long multicastGroup,
+        long multicastAdi);
+
+    private native long address(long nodeId);
+
+    private native NodeStatus status(long nodeId);
+
+    private native VirtualNetworkConfig networkConfig(long nodeId, long nwid);
+
+    private native Version version();
+
+    private native Peer[] peers(long nodeId);
+
+    private native VirtualNetworkConfig[] networks(long nodeId);
+}

java/src/com/zerotier/sdk/NodeException.java

@@ -0,0 +1,36 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+package com.zerotier.sdk;
+
+import java.lang.RuntimeException;
+
+public class NodeException extends RuntimeException {
+    public NodeException(String message) {
+        super(message);
+    }
+}

java/src/com/zerotier/sdk/NodeStatus.java

@@ -0,0 +1,69 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+package com.zerotier.sdk;
+
+public final class NodeStatus {
+	private long address;
+	private String publicIdentity;
+	private String secretIdentity;
+	private boolean online;
+
+	private NodeStatus() {}
+
+	/**
+	 * 40-bit ZeroTier address of this node
+	 */
+	public final long getAddres() {
+		return address;
+	}
+
+	/**
+	 * Public identity in string-serialized form (safe to send to others)
+	 *
+	 * <p>This identity will remain valid as long as the node exists.</p>
+	 */
+	public final String getPublicIdentity() {
+		return publicIdentity;
+	}
+
+	/**
+	 * Full identity including secret key in string-serialized form
+	 *
+	 * <p>This identity will remain valid as long as the node exists.</p>
+	 */
+	public final String getSecretIdentity() {
+		return secretIdentity;
+	}
+
+	/**
+	 * True if some kind of connectivity appears available
+	 */
+	public final boolean isOnline() {
+		return online;
+	}
+}

java/src/com/zerotier/sdk/PacketSender.java

@@ -0,0 +1,50 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+package com.zerotier.sdk;
+
+import java.net.InetSocketAddress;
+
+
+public interface PacketSender {
+    /**
+     * Function to send a ZeroTier packet out over the wire
+     *
+     * <p>The function must return zero on success and may return any error code
+     * on failure. Note that success does not (of course) guarantee packet
+     * delivery. It only means that the packet appears to have been sent.</p>
+     *
+     * @param localAddr {@link InetSocketAddress} to send from.  Set to null if not specified.
+     * @param remoteAddr {@link InetSocketAddress} to send to
+     * @param packetData data to send
+     * @return 0 on success, any error code on failure.
+     */
+    public int onSendPacketRequested(
+            InetSocketAddress localAddr,
+            InetSocketAddress remoteAddr,
+            byte[] packetData,
+            int ttl);
+}

java/src/com/zerotier/sdk/Peer.java

@@ -0,0 +1,110 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+package com.zerotier.sdk;
+
+import java.util.ArrayList;
+
+/**
+ * Peer status result
+ */
+public final class Peer {
+    private long address;
+    private long lastUnicastFrame;
+    private long lastMulticastFrame;
+    private int versionMajor;
+    private int versionMinor;
+    private int versionRev;
+    private int latency;
+    private PeerRole role;
+    private PeerPhysicalPath[] paths;
+
+    private Peer() {}
+
+    /**
+     * ZeroTier address (40 bits)
+     */
+    public final long address() {
+        return address;
+    }
+
+    /**
+     * Time we last received a unicast frame from this peer
+     */
+    public final long lastUnicastFrame() {
+        return lastUnicastFrame;
+    }
+
+    /**
+     * Time we last received a multicast rame from this peer
+     */
+    public final long lastMulticastFrame() {
+        return lastMulticastFrame;
+    }
+
+    /**
+     * Remote major version or -1 if not known
+     */
+    public final int versionMajor() {
+        return versionMajor;
+    }
+
+    /**
+     * Remote minor version or -1 if not known
+     */
+    public final int versionMinor() {
+        return versionMinor;
+    }
+
+    /**
+     * Remote revision or -1 if not known
+     */
+    public final int versionRev() {
+        return versionRev;
+    }
+
+    /**
+     * Last measured latency in milliseconds or zero if unknown
+     */
+    public final int latency() {
+        return latency;
+    }
+
+    /**
+     * What trust hierarchy role does this device have?
+     */
+    public final PeerRole role() {
+        return role;
+    }
+
+    /**
+     * Known network paths to peer
+     */
+    public final PeerPhysicalPath[] paths() {
+        return paths;
+    }
+}

java/src/com/zerotier/sdk/PeerPhysicalPath.java

@@ -0,0 +1,86 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+package com.zerotier.sdk;
+
+import java.net.InetSocketAddress;
+
+/**
+ * Physical network path to a peer
+ */
+public final class PeerPhysicalPath {
+    private InetSocketAddress address;
+    private long lastSend;
+    private long lastReceive;
+    private boolean fixed;
+    private boolean active;
+    private boolean preferred;
+
+    private PeerPhysicalPath() {}
+
+    /**
+     * Address of endpoint
+     */
+    public final InetSocketAddress address() {
+        return address;
+    }
+
+    /**
+     * Time of last send in milliseconds or 0 for never
+     */
+    public final long lastSend() {
+        return lastSend;
+    }
+
+    /**
+     * Time of last receive in milliseconds or 0 for never
+     */
+    public final long lastReceive() {
+        return lastReceive;
+    }
+
+    /**
+     * Is path fixed? (i.e. not learned, static)
+     */
+    public final boolean isFixed() {
+        return fixed;
+    }
+
+    /**
+     * Is path active?
+     */
+    public final boolean isActive() {
+        return active;
+    }
+
+    /**
+     * Is path preferred?
+     */
+    public final boolean isPreferred() {
+        return preferred;
+    }
+}

java/src/com/zerotier/sdk/PeerRole.java

@@ -0,0 +1,45 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+package com.zerotier.sdk;
+
+public enum PeerRole {
+    /**
+     * An ordinary node
+     */
+    PEER_ROLE_LEAF,
+
+    /**
+     * relay node
+     */
+    PEER_ROLE_RELAY,
+
+    /**
+     * root server
+     */
+    PEER_ROLE_ROOT
+}

java/src/com/zerotier/sdk/ResultCode.java

@@ -0,0 +1,74 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+package com.zerotier.sdk;
+
+/**
+ * Function return code: OK (0) or error results
+ *
+ * <p>Use {@link ResultCode#isFatal) to check for a fatal error. If a fatal error
+ * occurs, the node should be considered to not be working correctly. These
+ * indicate serious problems like an inaccessible data store or a compile
+ * problem.</p>
+ */
+public enum ResultCode {
+    /**
+     * Operation completed normally
+     */
+	RESULT_OK(0),
+
+    // Fatal errors (> 0, < 1000)
+    /**
+     * Ran out of memory
+     */
+	RESULT_FATAL_ERROR_OUT_OF_MEMORY(1),
+
+    /**
+     * Data store is not writable or has failed
+     */
+	RESULT_FATAL_ERROR_DATA_STORE_FAILED(2),
+
+    /**
+     * Internal error (e.g. unexpected exception indicating bug or build problem)
+     */
+	RESULT_FATAL_ERROR_INTERNAL(3),
+
+    // non-fatal errors
+
+    /**
+     * Network ID not valid
+     */
+	RESULT_ERROR_NETWORK_NOT_FOUND(1000);
+	
+	private final int id;
+    ResultCode(int id) { this.id = id; }
+    public int getValue() { return id; }
+
+    public boolean isFatal(int id) {
+    	return (id > 0 && id < 1000);
+    }
+}

java/src/com/zerotier/sdk/Version.java

@@ -0,0 +1,36 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+package com.zerotier.sdk;
+
+public final class Version {
+    private Version() {}
+    
+	public int major = 0;
+	public int minor = 0;
+	public int revision = 0;
+}

java/src/com/zerotier/sdk/VirtualNetworkConfig.java

@@ -0,0 +1,191 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+package com.zerotier.sdk;
+
+import java.lang.Comparable;
+import java.lang.Override;
+import java.lang.String;
+import java.util.ArrayList;
+import java.net.InetSocketAddress;
+
+public final class VirtualNetworkConfig implements Comparable<VirtualNetworkConfig> {
+    public static final int MAX_MULTICAST_SUBSCRIPTIONS = 4096;
+    public static final int ZT_MAX_ZT_ASSIGNED_ADDRESSES = 16;
+
+    private long nwid;
+    private long mac;
+    private String name;
+    private VirtualNetworkStatus status;
+    private VirtualNetworkType type;
+    private int mtu;
+    private boolean dhcp;
+    private boolean bridge;
+    private boolean broadcastEnabled;
+    private int portError;
+    private boolean enabled;
+    private long netconfRevision;
+    private InetSocketAddress[] assignedAddresses;
+
+    private VirtualNetworkConfig() {
+
+    }
+
+    public boolean equals(VirtualNetworkConfig cfg) {
+        boolean aaEqual = true;
+        if(assignedAddresses.length == cfg.assignedAddresses.length) {
+            for(int i = 0; i < assignedAddresses.length; ++i) {
+                if(!assignedAddresses[i].equals(cfg.assignedAddresses[i])) {
+                    return false;
+                }
+            }
+        } else {
+            aaEqual = false;
+        }
+
+        return nwid == cfg.nwid &&
+               mac == cfg.mac &&
+               name.equals(cfg.name) &&
+               status.equals(cfg.status) &&
+               type.equals(cfg.type) &&
+               mtu == cfg.mtu &&
+               dhcp == cfg.dhcp &&
+               bridge == cfg.bridge &&
+               broadcastEnabled == cfg.broadcastEnabled &&
+               portError == cfg.portError &&
+               enabled == cfg.enabled &&
+               aaEqual;
+    }
+
+    public int compareTo(VirtualNetworkConfig cfg) {
+        if(cfg.nwid == this.nwid) {
+            return 0;
+        } else {
+            return this.nwid > cfg.nwid ? 1 : -1;
+        }
+    }
+
+    /**
+     * 64-bit ZeroTier network ID
+     */
+    public final long networkId() {
+        return nwid;
+    }
+
+    /**
+     * Ethernet MAC (40 bits) that should be assigned to port
+     */
+    public final long macAddress() {
+        return mac;
+    }
+
+    /**
+     * Network name (from network configuration master)
+     */
+    public final String name() {
+        return name;
+    }
+
+    /**
+     * Network configuration request status
+     */
+    public final VirtualNetworkStatus networkStatus() {
+        return status;
+    }
+
+    /**
+     * Network type
+     */
+    public final VirtualNetworkType networkType() {
+        return type;
+    }
+
+    /**
+     * Maximum interface MTU
+     */
+    public final int mtu() {
+        return mtu;
+    }
+
+    /**
+     * If the network this port belongs to indicates DHCP availability
+     *
+     * <p>This is a suggestion. The underlying implementation is free to ignore it
+     * for security or other reasons. This is simply a netconf parameter that
+     * means 'DHCP is available on this network.'</p>
+     */
+    public final boolean isDhcpAvailable() {
+        return dhcp;
+    }
+
+    /**
+     * If this port is allowed to bridge to other networks
+     *
+     * <p>This is informational. If this is false, bridged packets will simply
+     * be dropped and bridging won't work.</p>
+     */
+    public final boolean isBridgeEnabled() {
+        return bridge;
+    }
+
+    /**
+     * If true, this network supports and allows broadcast (ff:ff:ff:ff:ff:ff) traffic
+     */
+    public final boolean broadcastEnabled() {
+        return broadcastEnabled;
+    }
+
+    /**
+     * If the network is in PORT_ERROR state, this is the error most recently returned by the port config callback
+     */
+    public final int portError() {
+        return portError;
+    }
+
+    /**
+     * Network config revision as reported by netconf master
+     *
+     * <p>If this is zero, it means we're still waiting for our netconf.</p>
+     */
+    public final long netconfRevision() {
+        return netconfRevision;
+    }
+
+    /**
+     * ZeroTier-assigned addresses (in {@link java.net.InetSocketAddress} objects)
+     *
+     * For IP, the port number of the sockaddr_XX structure contains the number
+     * of bits in the address netmask. Only the IP address and port are used.
+     * Other fields like interface number can be ignored.
+     *
+     * This is only used for ZeroTier-managed address assignments sent by the
+     * virtual network's configuration master.
+     */
+    public final InetSocketAddress[] assignedAddresses() {
+        return assignedAddresses;
+    }
+}

java/src/com/zerotier/sdk/VirtualNetworkConfigListener.java

@@ -0,0 +1,60 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+
+package com.zerotier.sdk;
+
+
+public interface VirtualNetworkConfigListener {
+    /**
+     * Callback called to update virtual network port configuration
+     *
+     * <p>This can be called at any time to update the configuration of a virtual
+     * network port. The parameter after the network ID specifies whether this
+     * port is being brought up, updated, brought down, or permanently deleted.
+     *
+     * This in turn should be used by the underlying implementation to create
+     * and configure tap devices at the OS (or virtual network stack) layer.</P>
+     *
+     * This should not call {@link Node#multicastSubscribe} or other network-modifying
+     * methods, as this could cause a deadlock in multithreaded or interrupt
+     * driven environments.
+     *
+     * This must return 0 on success. It can return any OS-dependent error code
+     * on failure, and this results in the network being placed into the
+     * PORT_ERROR state.
+     *
+     * @param nwid network id
+     * @param op {@link VirtualNetworkConfigOperation} enum describing the configuration operation
+     * @param config {@link VirtualNetworkConfig} object with the new configuration
+     * @return 0 on success
+     */
+    public int onNetworkConfigurationUpdated(
+            long nwid,
+            VirtualNetworkConfigOperation op,
+            VirtualNetworkConfig config);
+}

java/src/com/zerotier/sdk/VirtualNetworkConfigOperation.java

@@ -0,0 +1,49 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+package com.zerotier.sdk;
+
+public enum VirtualNetworkConfigOperation {
+    /**
+     * Network is coming up (either for the first time or after service restart)
+     */
+    VIRTUAL_NETWORK_CONFIG_OPERATION_UP,
+
+    /**
+     * Network configuration has been updated
+     */
+    VIRTUAL_NETWORK_CONFIG_OPERATION_CONFIG_UPDATE,
+
+    /**
+     * Network is going down (not permanently)
+     */
+    VIRTUAL_NETWORK_CONFIG_OPERATION_DOWN,
+
+    /**
+     * Network is going down permanently (leave/delete)
+     */
+    VIRTUAL_NETWORK_CONFIG_OPERATION_DESTROY
+}

java/src/com/zerotier/sdk/VirtualNetworkFrameListener.java

@@ -0,0 +1,48 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+package com.zerotier.sdk;
+
+public interface VirtualNetworkFrameListener {
+    /**
+     * Function to send a frame out to a virtual network port
+     * 
+     * @param nwid ZeroTier One network ID
+     * @param srcMac source MAC address
+     * @param destMac destination MAC address
+     * @param ethertype
+     * @param vlanId
+     * @param frameData data to send
+     */
+    public void onVirtualNetworkFrame(
+                long nwid,
+                long srcMac,
+                long destMac,
+                long etherType,
+                long vlanId,
+                byte[] frameData);
+}

java/src/com/zerotier/sdk/VirtualNetworkStatus.java

@@ -0,0 +1,59 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+package com.zerotier.sdk;
+
+public enum VirtualNetworkStatus {
+    /**
+     * Waiting for network configuration (also means revision == 0)
+     */
+    NETWORK_STATUS_REQUESTING_CONFIGURATION,
+
+    /**
+     * Configuration received and we are authorized
+     */
+    NETWORK_STATUS_OK,
+
+    /**
+     * Netconf master told us 'nope'
+     */
+    NETWORK_STATUS_ACCESS_DENIED,
+
+    /**
+     * Netconf master exists, but this virtual network does not
+     */
+    NETWORK_STATUS_NOT_FOUND,
+
+    /**
+     * Initialization of network failed or other internal error
+     */
+    NETWORK_STATUS_PORT_ERROR,
+
+    /**
+     * ZeroTier One version too old
+     */
+    NETWORK_STATUS_CLIENT_TOO_OLD
+}

java/src/com/zerotier/sdk/VirtualNetworkType.java

@@ -0,0 +1,39 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+package com.zerotier.sdk;
+
+public enum VirtualNetworkType {
+    /**
+     * Private networks are authorized via certificates of membership
+     */
+    NETWORK_TYPE_PRIVATE,
+
+    /**
+     * Public networks have no access control -- they'll always be AUTHORIZED
+     */
+    NETWORK_TYPE_PUBLIC
+}