3. DNS dynamic list selection fixes

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

@@ -52,11 +52,12 @@ class DNSListActivity : AppCompatActivity() {
         var dnsList = findViewById<ListView>(R.id.dnsList)
         var adapter = SelectDNSInfoListAdapter(this, arrayListOf(), mutableSetOf())
         dnsList.adapter = adapter
-        thread(start = true) {
-            try {
         var cd = deserializeStringList2DNSInfoSet(
             extras!!.getStringArrayList(MainActivity.DNS_LIST)!!
         )
+        thread(start = true) {
+            try {
+
                 for (d in cd) {
                     var ping = ping(d.address, 53)
                     d.ping = ping
@@ -72,14 +73,22 @@ class DNSListActivity : AppCompatActivity() {
                         {
                             adapter.addItem(dns)
                             adapter.sort()
-                            isLoading = false
                         }
                     )
                 }
             } catch (e: Throwable) {
                 e.printStackTrace()
             }
+            runOnUiThread(
+                Runnable
+                {
+                    var currentDNS = ArrayList(cd.sortedWith(compareBy { it.ping }))
+                    adapter.addAll(0, currentDNS)
+                    isLoading = false
                 }
+            )
+        }
+
     }
 
     private fun addNewDNS() {
@@ -133,18 +142,9 @@ class DNSListActivity : AppCompatActivity() {
             val result = Intent(this, MainActivity::class.java)
             var adapter = findViewById<ListView>(R.id.dnsList).adapter as SelectDNSInfoListAdapter
             val selectedDNS = adapter.getSelectedDNS()
-            if(selectedDNS.isNotEmpty()) {
             result.putExtra(MainActivity.DNS_LIST, serializeDNSInfoSet2StringList(selectedDNS))
             setResult(Activity.RESULT_OK, result)
-                finish()
+            finish()        }
-            } else {
-                val text = "Select at least one DNS"
-                val duration = Toast.LENGTH_SHORT
-                val toast = Toast.makeText(applicationContext, text, duration)
-                toast.setGravity(Gravity.CENTER, 0, 0)
-                toast.show()
-            }
-        }
         return true
     }
 }

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

@@ -50,8 +50,6 @@ class MainActivity : AppCompatActivity() {
         const val STATUS_FINISH = 8
         const val STATUS_STOP = 9
         const val IPv6: String = "IPv6"
-        const val PEERS: String = "PEERS"
-        const val DNS: String = "DNS"
         const val PEER_LIST_CODE = 1000
         const val DNS_LIST_CODE = 2000
         const val PEER_LIST = "PEERS_LIST"
@@ -173,7 +171,7 @@ class MainActivity : AppCompatActivity() {
         val pi = createPendingResult(TASK_CODE, intent, 0)
         intent.putExtra(PARAM_PINTENT, pi)
         intent.putExtra(COMMAND, UPDATE_DNS)
-        intent.putStringArrayListExtra(DNS, serializeDNSInfoSet2StringList(currentDNS))
+        intent.putStringArrayListExtra(CURRENT_DNS, serializeDNSInfoSet2StringList(currentDNS))
         startService(intent)
     }
 
@@ -197,8 +195,8 @@ class MainActivity : AppCompatActivity() {
             val pi = createPendingResult(TASK_CODE, intent, 0)
             intent.putExtra(PARAM_PINTENT, pi)
             intent.putExtra(COMMAND, START)
-            intent.putStringArrayListExtra(PEERS, serializePeerInfoSet2StringList(currentPeers))
+            intent.putStringArrayListExtra(CURRENT_PEERS, serializePeerInfoSet2StringList(currentPeers))
-            intent.putStringArrayListExtra(DNS, serializeDNSInfoSet2StringList(currentDNS))
+            intent.putStringArrayListExtra(CURRENT_DNS, serializeDNSInfoSet2StringList(currentDNS))
             intent.putExtra(STATIC_IP, findViewById<Switch>(R.id.staticIP).isChecked)
 
             startService(intent)
@@ -235,9 +233,6 @@ class MainActivity : AppCompatActivity() {
         if (requestCode == DNS_LIST_CODE && resultCode== Activity.RESULT_OK){
             if(data!!.extras!=null){
                 var currentDNS = data.extras!!.getStringArrayList(DNS_LIST)
-                if(currentDNS==null || currentDNS.size==0){
-                    showToast("No DNS selected!")
-                } else {
                 this.currentDNS = deserializeStringList2DNSInfoSet(currentDNS)
                 val adapter = DNSInfoListAdapter(this, this.currentDNS.sortedWith(compareBy { it.ping }))
                 val listView = findViewById<ListView>(R.id.dns)
@@ -251,7 +246,6 @@ class MainActivity : AppCompatActivity() {
                 }
             }
         }
-        }
 
         when (resultCode) {
             STATUS_START -> {

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

@@ -181,7 +181,7 @@ class PeerListActivity : AppCompatActivity() {
         }
     }
 
-    fun onClickSchemaList(v: View) {
+    private fun onClickSchemaList(v: View) {
         val height = -1 * v.height +30
         getAddressListPopup()?.showAsDropDown(v, -5, height)
     }

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

@@ -36,8 +36,8 @@ class YggdrasilTunService : VpnService() {
     private lateinit var ygg: Yggdrasil
     private var isClosed = false
 
-    /** Maximum packet size is constrained by the MTU, which is given as a signed short - 256  */
+    /** Maximum packet size is constrained by the MTU, which is given as a signed short/2 */
-    private val MAX_PACKET_SIZE = 65535
+    private val MAX_PACKET_SIZE = Short.MAX_VALUE/2
 
     companion object {
         private const val TAG = "Yggdrasil-service"
@@ -65,15 +65,15 @@ class YggdrasilTunService : VpnService() {
                 startForeground(FOREGROUND_ID, foregroundNotification("Yggdrasil service stopped"))
             }
             MainActivity.START ->{
-                val peers = deserializeStringList2PeerInfoSet(intent.getStringArrayListExtra(MainActivity.PEERS))
+                val peers = deserializeStringList2PeerInfoSet(intent.getStringArrayListExtra(MainActivity.CURRENT_PEERS))
-                val dns = deserializeStringList2DNSInfoSet(intent.getStringArrayListExtra(MainActivity.DNS))
+                val dns = deserializeStringList2DNSInfoSet(intent.getStringArrayListExtra(MainActivity.CURRENT_DNS))
                 val staticIP: Boolean = intent.getBooleanExtra(MainActivity.STATIC_IP, false)
                 ygg = Yggdrasil()
                 setupTunInterface(pi, peers, dns, staticIP)
                 startForeground(FOREGROUND_ID, foregroundNotification("Yggdrasil service started"))
             }
             MainActivity.UPDATE_DNS ->{
-                val dns = deserializeStringList2DNSInfoSet(intent.getStringArrayListExtra(MainActivity.DNS))
+                val dns = deserializeStringList2DNSInfoSet(intent.getStringArrayListExtra(MainActivity.CURRENT_DNS))
                 setupIOStreams(dns)
             }
             MainActivity.UPDATE_PEERS ->{
@@ -90,6 +90,7 @@ class YggdrasilTunService : VpnService() {
         var builder = Builder()
             .addAddress(address, 7)
             .allowFamily(OsConstants.AF_INET)
+            .allowBypass()
             .setMtu(MAX_PACKET_SIZE)
         if (dns.size > 0) {
             builder.addDnsServer(address)

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

@@ -82,6 +82,13 @@ class SelectDNSInfoListAdapter(
         allDNS.add(index, peerInfo)
     }
 
+    fun addAll(index: Int, dnsInfo: ArrayList<DNSInfo>){
+        currentDNS.addAll(dnsInfo)
+        allDNS.removeAll(dnsInfo)
+        allDNS.addAll(index, dnsInfo)
+        this.notifyDataSetChanged()
+    }
+
     fun sort(){
         allDNS = ArrayList(allDNS.sortedWith(compareBy { it.ping }))
         this.notifyDataSetChanged()