2. added new DNS functionality

app/src/main/java/io/github/chronosx88/yggdrasil/DNSListActivity.kt

@@ -1,15 +1,11 @@
 package io.github.chronosx88.yggdrasil
 
 import android.app.Activity
-import android.content.DialogInterface
 import android.content.Intent
+import android.os.Build
 import android.os.Bundle
-import android.text.Html
 import android.view.*
-import android.widget.Button
-import android.widget.ListView
-import android.widget.TextView
-import android.widget.Toast
+import android.widget.*
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import com.google.android.material.floatingactionbutton.FloatingActionButton
@@ -18,7 +14,7 @@ import io.github.chronosx88.yggdrasil.models.config.SelectDNSInfoListAdapter
 import io.github.chronosx88.yggdrasil.models.config.Utils.Companion.deserializeStringList2DNSInfoSet
 import io.github.chronosx88.yggdrasil.models.config.Utils.Companion.ping
 import io.github.chronosx88.yggdrasil.models.config.Utils.Companion.serializeDNSInfoSet2StringList
-import kotlinx.coroutines.Runnable
+import kotlinx.coroutines.*
 import java.net.InetAddress
 import kotlin.concurrent.thread
 
@@ -50,7 +46,7 @@ class DNSListActivity : AppCompatActivity() {
         setContentView(R.layout.activity_dns_list)
         setSupportActionBar(findViewById(R.id.toolbar))
         findViewById<FloatingActionButton>(R.id.fab).setOnClickListener { view ->
-
+            addNewDNS()
         }
         var extras = intent.extras
         var dnsList = findViewById<ListView>(R.id.dnsList)
@@ -86,6 +82,43 @@ class DNSListActivity : AppCompatActivity() {
         }
     }
 
+    private fun addNewDNS() {
+        val view: View = LayoutInflater.from(this).inflate(R.layout.new_dns_dialog, null)
+        val countryCode: String = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            this.resources.configuration.locales[0].country
+        } else {
+            this.resources.configuration.locale.country
+        }
+
+        var ccp = view.findViewById<com.hbb20.CountryCodePicker>(R.id.ccp)
+        ccp.setCountryForNameCode(countryCode)
+        val ab: AlertDialog.Builder = AlertDialog.Builder(this)
+        ab.setCancelable(true).setView(view)
+        var ad = ab.show()
+        var addButton = view.findViewById<Button>(R.id.add)
+        addButton.setOnClickListener{
+            var ipInput = view.findViewById<TextView>(R.id.ipInput)
+            var ccpInput = view.findViewById<com.hbb20.CountryCodePicker>(R.id.ccp)
+            var ip = ipInput.text.toString().toLowerCase()
+            var ccp = ccpInput.selectedCountryNameCode
+            GlobalScope.launch {
+                var di = DNSInfo(InetAddress.getByName("["+ip+"]"), ccp, "User DNS")
+                try {
+                    var ping = ping(di.address, 53)
+                    di.ping = ping
+                } catch(e: Throwable){
+                    di.ping = Int.MAX_VALUE
+                }
+                withContext(Dispatchers.Main) {
+                    var selectAdapter = (findViewById<ListView>(R.id.peerList).adapter as SelectDNSInfoListAdapter)
+                    selectAdapter.addItem(0, di)
+                    selectAdapter.notifyDataSetChanged()
+                    ad.dismiss()
+                }
+            }
+        }
+    }
+
     override fun onCreateOptionsMenu(menu: Menu): Boolean {
         // Inflate the menu; this adds items to the action bar if it is present.
         menuInflater.inflate(R.menu.save, menu)

app/src/main/java/io/github/chronosx88/yggdrasil/PeerListActivity.kt

@@ -28,10 +28,8 @@ import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import java.io.ByteArrayOutputStream
-import java.io.IOException
 import java.lang.reflect.Type
 import java.net.InetAddress
-import java.net.SocketTimeoutException
 import java.net.URI
 import java.net.URL
 import java.nio.charset.Charset
@@ -55,7 +53,7 @@ class PeerListActivity : AppCompatActivity() {
 
     var isLoading = true;
 
-    var popupAddress: PopupWindow? = null
+    var popup: PopupWindow? = null
     var adapter: DropDownAdapter? = null
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -181,7 +179,7 @@ class PeerListActivity : AppCompatActivity() {
     }
 
     private fun getAddressListPopup(): PopupWindow? {
-        return popupAddress
+        return popup
     }
 
     private fun getPopupWindow(
@@ -209,7 +207,7 @@ class PeerListActivity : AppCompatActivity() {
         popupWindow.height = WindowManager.LayoutParams.WRAP_CONTENT
         // set the list view as pop up window content
         popupWindow.contentView = listView
-        popupAddress = popupWindow
+        popup = popupWindow
         return popupWindow
     }
 

app/src/main/java/io/github/chronosx88/yggdrasil/YggdrasilTunService.kt

@@ -30,8 +30,6 @@ import mobile.Mobile
 import mobile.Yggdrasil
 import java.io.*
 import java.net.Inet6Address
-import kotlin.concurrent.thread
-
 
 class YggdrasilTunService : VpnService() {
 
@@ -39,7 +37,7 @@ class YggdrasilTunService : VpnService() {
     private var isClosed = false
 
     /** Maximum packet size is constrained by the MTU, which is given as a signed short - 256  */
-    private val MAX_PACKET_SIZE = Short.MAX_VALUE-256
+    private val MAX_PACKET_SIZE = Short.MAX_VALUE/2
 
     companion object {
         private const val TAG = "Yggdrasil-service"

app/src/main/java/io/github/chronosx88/yggdrasil/models/config/SelectDNSInfoAdapter.kt

@@ -78,6 +78,10 @@ class SelectDNSInfoListAdapter(
         allDNS.add(peerInfo)
     }
 
+    fun addItem(index: Int, peerInfo: DNSInfo){
+        allDNS.add(index, peerInfo)
+    }
+
     fun sort(){
         allDNS = ArrayList(allDNS.sortedWith(compareBy { it.ping }))
         this.notifyDataSetChanged()

app/src/main/res/layout/activity_dns_list.xml

@@ -35,6 +35,6 @@
             app:elevation="6dp"
             app:fabSize="normal"
             app:srcCompat="@android:drawable/ic_input_add"
-            android:visibility="gone"/>
+            />
 
 </androidx.coordinatorlayout.widget.CoordinatorLayout>

app/src/main/res/layout/new_dns_dialog.xml

@@ -0,0 +1,63 @@
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        android:layout_height="wrap_content"
+        android:layout_width="match_parent"
+        android:padding="10dp"
+        android:background="@color/grey">
+
+    <com.google.android.material.textfield.TextInputLayout
+            android:id="@+id/ip"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            android:layout_margin="10dp"
+            app:boxBackgroundMode="none"
+            android:background="@drawable/edit_text_rounded_corner"
+            android:textColorHint="@color/white"
+            style="@style/EditText.OutlinedBox">
+
+        <com.google.android.material.textfield.TextInputEditText
+                android:id="@+id/ipInput"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:digits="0,1,2,3,4,5,6,7,8,9,:"
+                android:hint="IPv6"
+                android:inputType="textNoSuggestions"
+                android:textColor="@color/white"
+                android:textCursorDrawable="@null"
+                />
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.hbb20.CountryCodePicker
+            android:id="@+id/ccp"
+            android:layout_width="match_parent"
+            android:layout_height="60dp"
+            android:gravity="center_vertical"
+            android:layout_margin="10dp"
+            app:ccp_contentColor="@color/white"
+            app:ccp_showFullName="true"
+            app:ccp_showPhoneCode="false"
+            app:ccp_showNameCode="false"
+            app:ccpDialog_backgroundColor="@color/grey"
+            app:ccpDialog_textColor="@color/white"
+            app:layout_constraintEnd_toEndOf="@+id/ip"
+            app:layout_constraintTop_toBottomOf="@+id/ip"
+            android:background="@drawable/edit_text_rounded_corner"/>
+
+    <Button
+            android:id="@+id/add"
+            android:layout_width="match_parent"
+            android:layout_height="60dp"
+            android:layout_marginTop="20dp"
+            android:layout_marginBottom="10dp"
+            android:layout_marginLeft="10dp"
+            android:layout_marginRight="10dp"
+            app:layout_constraintEnd_toEndOf="@+id/schema"
+            app:layout_constraintTop_toBottomOf="@+id/ccp"
+            android:background="@drawable/button_selector"
+            app:backgroundTint="@null"
+            android:text="ADD"
+            android:textColor="@color/white"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>