diff --git a/jni/natpmpclient.cpp b/jni/natpmpclient.cpp
index 52b7bee..87005a6 100644
--- a/jni/natpmpclient.cpp
+++ b/jni/natpmpclient.cpp
@@ -1,5 +1,10 @@
+#include <string>
+#include <sstream>
+#include <sys/select.h>
 #include "beginvision.h"
 
+#include "libnatpmp/natpmp.h"
+
 #define  JNIDEFINE(fname) Java_teaonly_droideye_MainActivity_##fname
 
 extern "C" {
@@ -7,4 +12,81 @@ extern "C" {
 };
 
 
+jstring JNICALL JNIDEFINE(nativeQueryInternet)(JNIEnv* env, jclass clz) {
+    natpmp_t natpmp;
+	natpmpresp_t response;
+    std::string ipaddr; 
+    uint16_t privatePort = 8080;
+    uint16_t publicPort = 7910;
+    uint32_t lifetime = 36000;              // 10 hours
+    int protocol = NATPMP_PROTOCOL_TCP;
+    in_addr_t gateway = 0;
+	fd_set fds;
+	struct timeval timeout;
+    int ret;
+    std::string  result = "";
+        
+    // 1. init internal object
+    ret = initnatpmp(&natpmp, 0, gateway);
+    if (ret < 0) {
+        result = "error:gateway";
+        goto _done;
+    }
+
+    // 2. get internet public ip address
+    ret = sendpublicaddressrequest(&natpmp);
+    if ( ret != 2) {
+        result = "error:ipaddr";
+        goto _done;
+    } 
+    FD_ZERO(&fds);
+    FD_SET(natpmp.s, &fds);
+    getnatpmprequesttimeout(&natpmp, &timeout);
+    ret = select(FD_SETSIZE, &fds, NULL, NULL, &timeout);
+    if(ret < 0) {
+        result = "error:select";
+        goto _done;
+    }
+    ret = readnatpmpresponseorretry(&natpmp, &response);
+    if( ret == NATPMP_TRYAGAIN  ) {
+        result = "error:timeout";
+        goto _done;
+    } else if ( ret < 0) {
+        result = "error:failed";
+        goto _done;
+    } 
+    ipaddr = inet_ntoa(response.pnu.publicaddress.addr);
+    
+    // 3. set extern port mapping
+    ret = sendnewportmappingrequest(&natpmp, protocol,
+        	                      privatePort, publicPort,
+								  lifetime);
+    FD_ZERO(&fds);
+    FD_SET(natpmp.s, &fds);
+    getnatpmprequesttimeout(&natpmp, &timeout);
+    ret = select(FD_SETSIZE, &fds, NULL, NULL, &timeout);
+    if(ret < 0) {
+        result = "error:select";
+        goto _done;
+    }
+    ret = readnatpmpresponseorretry(&natpmp, &response);
+    if( ret == NATPMP_TRYAGAIN  ) {
+        result = "error:timeout";
+        goto _done;
+    } else if ( ret < 0) {
+        result = "error:failed";
+        goto _done;
+    } 
+    privatePort = response.pnu.newportmapping.privateport;
+    publicPort = response.pnu.newportmapping.mappedpublicport; 
+   
+    {
+        std::stringstream stream;
+        stream << "http://" << ipaddr << ":" << publicPort;
+        result = stream.str();
+    }
+
+_done:
+    return env->NewStringUTF(result.c_str());  
+}
 
diff --git a/res/layout/main.xml b/res/layout/main.xml
index 06fd01e..73e1cc4 100644
--- a/res/layout/main.xml
+++ b/res/layout/main.xml
@@ -31,9 +31,19 @@
                 android:layout_width="fill_parent"
                 android:gravity="center"
                 android:background="#88333333"
-                android:orientation="horizontal">
+                android:orientation="vertical">
+                <TextView
+                    android:id="@+id/tv_message1"
+                    android:layout_width="fill_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginLeft = "5dip"
+                    android:layout_marginRight = "5dip"
+                    android:gravity="center"
+                    android:textColor="#FFFFFFFF"
+                    android:textSize="24dip"/>
                 <TextView
-                    android:id="@+id/tv_message"
+                    android:id="@+id/tv_message2"
+                    android:visibility="gone"
                     android:layout_width="fill_parent"
                     android:layout_height="wrap_content"
                     android:layout_marginLeft = "5dip"
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 046cbb4..3f26bd9 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -2,9 +2,11 @@
 <resources>
     <string name="app_name">Wifi Camera</string>
 
-    <string name="action_setup">Setup</string>
-    <string name="action_exit">Close</string>
+    <string name="action_exit">Exit</string>
 
-    <string name="msg_access">Open URL in PC </string>
+    <string name="msg_access_local">Open at local: </string>
+    <string name="msg_access_internet">Open at internet:  </string>
+    <string name="msg_access_query">Detecting internet ... </string>
+    <string name="msg_access_query_error">Can not be opened at internet</string>
     <string name="msg_error">Error: Please enable wifi</string>
 </resources>
diff --git a/src/teaonly/droideye/MainActivity.java b/src/teaonly/droideye/MainActivity.java
index fd8d05b..a8c4c17 100644
--- a/src/teaonly/droideye/MainActivity.java
+++ b/src/teaonly/droideye/MainActivity.java
@@ -72,7 +72,8 @@ public class MainActivity extends Activity
     private CameraView cameraView_;
     private OverlayView overlayView_;
     private Button btnExit;
-    private TextView tvMessage;
+    private TextView tvMessage1;
+    private TextView tvMessage2;
 
     private AudioRecord audioCapture = null;
     private StreamingLoop audioLoop = null;
@@ -96,7 +97,8 @@ public void onCreate(Bundle savedInstanceState) {
 
         btnExit = (Button)findViewById(R.id.btn_exit);
         btnExit.setOnClickListener(exitAction);
-        tvMessage = (TextView)findViewById(R.id.tv_message);
+        tvMessage1 = (TextView)findViewById(R.id.tv_message1);
+        tvMessage2 = (TextView)findViewById(R.id.tv_message2);
         
         for(int i = 0; i < maxVideoNumber; i++) {
             videoFrames[i] = new VideoFrame(1024*1024*2);        
@@ -224,12 +226,16 @@ private boolean initWebServer() {
             }
         }
         if ( webServer != null) {
-            tvMessage.setText( getString(R.string.msg_access) + " http://" + ipAddr  + ":8080" );
+            tvMessage1.setText( getString(R.string.msg_access_local) + " http://" + ipAddr  + ":8080" );
+            tvMessage2.setText( getString(R.string.msg_access_query));
+            tvMessage2.setVisibility(View.VISIBLE);
             return true;
         } else {
-            tvMessage.setText( getString(R.string.msg_error) );
+            tvMessage1.setText( getString(R.string.msg_error) );
+            tvMessage2.setVisibility(View.GONE);
             return false;
         }
+          
     }
    
     private OnClickListener exitAction = new OnClickListener() {
@@ -414,5 +420,30 @@ public void run() {
             nativeCloseEncoder();
         }
     }
-}
+
+    
+    static private native String nativeQueryInternet();    
+    private class NatPMPClinet extends Thread {
+        String ret = nativeQueryInternet();
+        @Override
+        public void run(){
+            Handler handleQueryResult = new Handler(getMainLooper());  
+            if ( ret.startsWith("error:") ) {
+                handleQueryResult.post( new Runnable() {
+                    @Override
+                    public void run() {
+                        tvMessage2.setText( getString(R.string.msg_access_query_error));                        
+                    }
+                });
+            } else {
+                handleQueryResult.post( new Runnable() {
+                    @Override
+                    public void run() {
+                        tvMessage2.setText( getString(R.string.msg_access_internet) + " " + ret );
+                    }
+                });
+            }
+        }    
+    }
+}