diff --git a/.travis.yml b/.travis.yml
index b31175c1..52c7ec63 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,7 @@ env:
    - secure: "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"
 
 before_install:
+  - yes | sdkmanager "platforms;android-27"
   - echo -n | openssl s_client -connect scan.coverity.com:443 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' | sudo tee -a /etc/ssl/certs/ca-
 
 addons:
diff --git a/app/build.gradle b/app/build.gradle
index c938acf5..e83fc8b0 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -17,20 +17,19 @@ sonarqube {
 android {
     compileSdkVersion 27
     buildToolsVersion '27.0.2'
-    useLibrary 'org.apache.http.legacy'
 
     defaultConfig {
         minSdkVersion 14
         targetSdkVersion 27
-        versionCode 53
-        versionName "2.2.4"
+        versionCode 54
+        versionName "2.2.6"
         applicationId "com.aaronjwood.portauthority"
         setProperty("archivesBaseName", "PortAuthority-$versionName")
     }
 
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_7
-        targetCompatibility JavaVersion.VERSION_1_7
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
     }
 
     buildTypes {
@@ -68,6 +67,7 @@ android {
 dependencies {
     compile 'com.android.support:support-v4:27.0.2'
     compile 'com.android.support:appcompat-v7:27.0.2'
+    compile 'com.squareup.okhttp3:okhttp:3.9.1'
     compile 'jcifs:jcifs:1.3.17'
     compile 'dnsjava:dnsjava:2.1.7'
     //This does absolutely nothing
diff --git a/app/proguard.pro b/app/proguard.pro
index 34183354..26ef9e2c 100644
--- a/app/proguard.pro
+++ b/app/proguard.pro
@@ -2,4 +2,10 @@
 -dontwarn org.xbill.DNS.spi.DNSJavaNameServiceDescriptor
 -keep class org.xbill.** { *; }
 -keepattributes EnclosingMethod
--keepattributes InnerClasses
\ No newline at end of file
+-keepattributes InnerClasses
+
+-dontwarn okhttp3.**
+-dontwarn okio.**
+-dontwarn javax.annotation.**
+# A resource is loaded with a relative path so the package of this class must be preserved.
+-keepnames class okhttp3.internal.publicsuffix.PublicSuffixDatabase
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index c4afc32f..6f79851c 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -8,6 +8,7 @@
     <uses-permission android:name="android.permission.INTERNET" />
 
     <application
+        android:name=".PortAuthority"
         android:allowBackup="true"
         android:icon="@drawable/icon"
         android:label="@string/app_name"
diff --git a/app/src/main/java/com/aaronjwood/portauthority/PortAuthority.java b/app/src/main/java/com/aaronjwood/portauthority/PortAuthority.java
new file mode 100644
index 00000000..b1dcc00e
--- /dev/null
+++ b/app/src/main/java/com/aaronjwood/portauthority/PortAuthority.java
@@ -0,0 +1,33 @@
+package com.aaronjwood.portauthority;
+
+import android.app.Application;
+import android.os.Process;
+
+import com.squareup.leakcanary.LeakCanary;
+
+public class PortAuthority extends Application {
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+
+        if (LeakCanary.isInAnalyzerProcess(this)) {
+            // This process is dedicated to LeakCanary for heap analysis.
+            // You should not init your app in this process.
+            return;
+        }
+
+        LeakCanary.install(this);
+        checkReplacingState(); // Workaround for https://issuetracker.google.com/issues/36972466
+    }
+
+    /**
+     * Kills the process if we can't get our own resources.
+     */
+    private void checkReplacingState() {
+        if (getResources() == null) {
+            Process.killProcess(Process.myPid());
+        }
+    }
+
+}
diff --git a/app/src/main/java/com/aaronjwood/portauthority/activity/MainActivity.java b/app/src/main/java/com/aaronjwood/portauthority/activity/MainActivity.java
index acf4cd43..25969736 100644
--- a/app/src/main/java/com/aaronjwood/portauthority/activity/MainActivity.java
+++ b/app/src/main/java/com/aaronjwood/portauthority/activity/MainActivity.java
@@ -9,6 +9,7 @@
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.content.res.Resources;
 import android.database.sqlite.SQLiteException;
 import android.net.NetworkInfo;
 import android.net.wifi.WifiManager;
@@ -32,7 +33,6 @@
 import android.widget.RelativeLayout;
 import android.widget.TextView;
 
-import com.aaronjwood.portauthority.BuildConfig;
 import com.aaronjwood.portauthority.R;
 import com.aaronjwood.portauthority.adapter.HostAdapter;
 import com.aaronjwood.portauthority.async.DownloadAsyncTask;
@@ -47,13 +47,12 @@
 import com.aaronjwood.portauthority.response.MainAsyncResponse;
 import com.aaronjwood.portauthority.utils.Errors;
 import com.aaronjwood.portauthority.utils.UserPreference;
-import com.squareup.leakcanary.LeakCanary;
 
 import java.io.IOException;
-import java.math.BigInteger;
 import java.net.InetAddress;
 import java.net.SocketException;
 import java.net.UnknownHostException;
+import java.nio.ByteBuffer;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Comparator;
@@ -76,7 +75,6 @@ public final class MainActivity extends AppCompatActivity implements MainAsyncRe
     private ProgressDialog scanProgressDialog;
     private Handler signalHandler = new Handler();
     private Handler scanHandler;
-    private BroadcastReceiver receiver;
     private IntentFilter intentFilter = new IntentFilter();
     private HostAdapter hostAdapter;
     private List<Host> hosts = Collections.synchronizedList(new ArrayList<Host>());
@@ -85,6 +83,25 @@ public final class MainActivity extends AppCompatActivity implements MainAsyncRe
     private DownloadAsyncTask portTask;
     private boolean sortAscending;
 
+    private BroadcastReceiver receiver = new BroadcastReceiver() {
+
+        /**
+         * Detect if a network connection has been lost or established
+         * @param context
+         * @param intent
+         */
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            NetworkInfo info = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);
+            if (info == null) {
+                return;
+            }
+
+            getNetworkInfo(info);
+        }
+
+    };
+
     /**
      * Activity created
      *
@@ -94,10 +111,6 @@ public final class MainActivity extends AppCompatActivity implements MainAsyncRe
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        if (BuildConfig.DEBUG) {
-            LeakCanary.install(getApplication());
-        }
-
         setContentView(R.layout.activity_main);
 
         internalIp = findViewById(R.id.internalIpAddress);
@@ -117,8 +130,9 @@ protected void onCreate(Bundle savedInstanceState) {
 
         setupHostsAdapter();
         setupDrawer();
-        setupReceivers();
         setupHostDiscovery();
+
+        intentFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
     }
 
     /**
@@ -214,18 +228,20 @@ private void setupHostDiscovery() {
              */
             @Override
             public void onClick(View v) {
+                Resources resources = getResources();
+                Context context = getApplicationContext();
                 try {
                     if (!wifi.isEnabled()) {
-                        Errors.showError(getApplicationContext(), getResources().getString(R.string.wifiDisabled));
+                        Errors.showError(context, resources.getString(R.string.wifiDisabled));
                         return;
                     }
 
                     if (!wifi.isConnectedWifi()) {
-                        Errors.showError(getApplicationContext(), getResources().getString(R.string.notConnectedWifi));
+                        Errors.showError(context, resources.getString(R.string.notConnectedWifi));
                         return;
                     }
                 } catch (Wireless.NoWifiManagerException | Wireless.NoConnectivityManagerException e) {
-                    Errors.showError(getApplicationContext(), getResources().getString(R.string.failedWifiManager));
+                    Errors.showError(context, resources.getString(R.string.failedWifiManager));
                     return;
                 }
 
@@ -233,7 +249,7 @@ public void onClick(View v) {
                 try {
                     numSubnetHosts = wifi.getNumberOfHostsInWifiSubnet();
                 } catch (Wireless.NoWifiManagerException e) {
-                    Errors.showError(getApplicationContext(), getResources().getString(R.string.failedSubnetHosts));
+                    Errors.showError(context, resources.getString(R.string.failedSubnetHosts));
                     return;
                 }
 
@@ -245,8 +261,8 @@ public void onClick(View v) {
 
                 scanProgressDialog = new ProgressDialog(MainActivity.this, R.style.DialogTheme);
                 scanProgressDialog.setCancelable(false);
-                scanProgressDialog.setTitle(getResources().getString(R.string.hostScan));
-                scanProgressDialog.setMessage(String.format(getResources().getString(R.string.subnetHosts), numSubnetHosts));
+                scanProgressDialog.setTitle(resources.getString(R.string.hostScan));
+                scanProgressDialog.setMessage(String.format(resources.getString(R.string.subnetHosts), numSubnetHosts));
                 scanProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
                 scanProgressDialog.setProgress(0);
                 scanProgressDialog.setMax(numSubnetHosts);
@@ -254,11 +270,11 @@ public void onClick(View v) {
 
                 try {
                     Integer ip = wifi.getInternalWifiIpAddress(Integer.class);
-                    new ScanHostsAsyncTask(MainActivity.this, db).execute(ip, wifi.getInternalWifiSubnet(), UserPreference.getHostSocketTimeout(getApplicationContext()));
+                    new ScanHostsAsyncTask(MainActivity.this, db).execute(ip, wifi.getInternalWifiSubnet(), UserPreference.getHostSocketTimeout(context));
                     discoverHostsBtn.setAlpha(.3f);
                     discoverHostsBtn.setEnabled(false);
                 } catch (UnknownHostException | Wireless.NoWifiManagerException e) {
-                    Errors.showError(getApplicationContext(), getResources().getString(R.string.notConnectedWifi));
+                    Errors.showError(context, resources.getString(R.string.notConnectedWifi));
                 }
             }
         });
@@ -384,33 +400,6 @@ private void setClip(CharSequence label, String text) {
         }
     }
 
-    /**
-     * Sets up and registers receivers
-     */
-    private void setupReceivers() {
-        receiver = new BroadcastReceiver() {
-
-            /**
-             * Detect if a network connection has been lost or established
-             * @param context
-             * @param intent
-             */
-            @Override
-            public void onReceive(Context context, Intent intent) {
-                NetworkInfo info = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);
-                if (info == null) {
-                    return;
-                }
-
-                getNetworkInfo(info);
-            }
-
-        };
-
-        intentFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
-        registerReceiver(receiver, intentFilter);
-    }
-
     /**
      * Gets network information about the device and updates various UI elements
      */
@@ -418,6 +407,8 @@ private void getNetworkInfo(NetworkInfo info) {
         setupMac();
         getExternalIp();
 
+        final Resources resources = getResources();
+        final Context context = getApplicationContext();
         try {
             boolean enabled = wifi.isEnabled();
             if (!info.isConnected() || !enabled) {
@@ -433,7 +424,7 @@ private void getNetworkInfo(NetworkInfo info) {
                 return;
             }
         } catch (Wireless.NoWifiManagerException e) {
-            Errors.showError(getApplicationContext(), getResources().getString(R.string.failedWifiManager));
+            Errors.showError(context, resources.getString(R.string.failedWifiManager));
         }
 
         if (!info.isConnected()) {
@@ -452,17 +443,17 @@ public void run() {
                 try {
                     speed = wifi.getLinkSpeed();
                 } catch (Wireless.NoWifiManagerException e) {
-                    Errors.showError(getApplicationContext(), getResources().getString(R.string.failedLinkSpeed));
+                    Errors.showError(context, resources.getString(R.string.failedLinkSpeed));
                     return;
                 }
                 try {
                     signal = wifi.getSignalStrength();
                 } catch (Wireless.NoWifiManagerException e) {
-                    Errors.showError(getApplicationContext(), getResources().getString(R.string.failedSignal));
+                    Errors.showError(context, resources.getString(R.string.failedSignal));
                     return;
                 }
 
-                signalStrength.setText(String.format(getResources().getString(R.string.signalLink), signal, speed));
+                signalStrength.setText(String.format(resources.getString(R.string.signalLink), signal, speed));
                 signalHandler.postDelayed(this, TIMER_INTERVAL);
             }
         }, 0);
@@ -474,13 +465,13 @@ public void run() {
         try {
             wifiSsid = wifi.getSSID();
         } catch (Wireless.NoWifiManagerException e) {
-            Errors.showError(getApplicationContext(), getResources().getString(R.string.failedSsid));
+            Errors.showError(context, resources.getString(R.string.failedSsid));
             return;
         }
         try {
             wifiBssid = wifi.getBSSID();
         } catch (Wireless.NoWifiManagerException e) {
-            Errors.showError(getApplicationContext(), getResources().getString(R.string.failedBssid));
+            Errors.showError(context, resources.getString(R.string.failedBssid));
             return;
         }
 
@@ -604,6 +595,9 @@ private void getExternalIp() {
     public void onPause() {
         super.onPause();
 
+        unregisterReceiver(receiver);
+        signalHandler.removeCallbacksAndMessages(null);
+
         if (scanProgressDialog != null) {
             scanProgressDialog.dismiss();
         }
@@ -622,25 +616,11 @@ public void onPause() {
     }
 
     /**
-     * Activity destroyed
-     */
-    @Override
-    public void onDestroy() {
-        super.onDestroy();
-
-        signalHandler.removeCallbacksAndMessages(null);
-
-        if (receiver != null) {
-            unregisterReceiver(receiver);
-        }
-    }
-
-    /**
-     * Activity restarted
+     * Activity resumed.
      */
     @Override
-    public void onRestart() {
-        super.onRestart();
+    public void onResume() {
+        super.onResume();
 
         registerReceiver(receiver, intentFilter);
     }
@@ -700,8 +680,8 @@ public void run() {
                     @Override
                     public int compare(Host lhs, Host rhs) {
                         try {
-                            int leftIp = new BigInteger(InetAddress.getByName(lhs.getIp()).getAddress()).intValue();
-                            int rightIp = new BigInteger(InetAddress.getByName(rhs.getIp()).getAddress()).intValue();
+                            int leftIp = ByteBuffer.wrap(InetAddress.getByName(lhs.getIp()).getAddress()).getInt();
+                            int rightIp = ByteBuffer.wrap(InetAddress.getByName(rhs.getIp()).getAddress()).getInt();
 
                             return leftIp - rightIp;
                         } catch (UnknownHostException ignored) {
diff --git a/app/src/main/java/com/aaronjwood/portauthority/async/WanIpAsyncTask.java b/app/src/main/java/com/aaronjwood/portauthority/async/WanIpAsyncTask.java
index 4cbe571f..123002b9 100644
--- a/app/src/main/java/com/aaronjwood/portauthority/async/WanIpAsyncTask.java
+++ b/app/src/main/java/com/aaronjwood/portauthority/async/WanIpAsyncTask.java
@@ -1,20 +1,17 @@
 package com.aaronjwood.portauthority.async;
 
+import android.annotation.SuppressLint;
 import android.os.AsyncTask;
 
 import com.aaronjwood.portauthority.response.MainAsyncResponse;
 
-import org.apache.http.HttpResponse;
-import org.apache.http.HttpStatus;
-import org.apache.http.client.ClientProtocolException;
-import org.apache.http.client.HttpClient;
-import org.apache.http.client.methods.HttpGet;
-import org.apache.http.impl.client.DefaultHttpClient;
-import org.apache.http.util.EntityUtils;
-
 import java.io.IOException;
 import java.lang.ref.WeakReference;
 
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+
 public class WanIpAsyncTask extends AsyncTask<Void, Void, String> {
 
     // IP service is 100% open source https://github.com/aaronjwood/public-ip-api
@@ -37,20 +34,18 @@ public WanIpAsyncTask(MainAsyncResponse delegate) {
      * @return External IP address
      */
     @Override
+    @SuppressLint("NewApi")
     protected String doInBackground(Void... params) {
         String error = "Couldn't get your external IP";
-        HttpClient httpclient = new DefaultHttpClient();
-        HttpGet httpget = new HttpGet(EXTERNAL_IP_SERVICE);
+        OkHttpClient httpClient = new OkHttpClient();
+        Request request = new Request.Builder().url(EXTERNAL_IP_SERVICE).build();
 
-        try {
-            HttpResponse response = httpclient.execute(httpget);
-            if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
+        try (Response response = httpClient.newCall(request).execute()) {
+            if (!response.isSuccessful()) {
                 return error;
             }
 
-            return EntityUtils.toString(response.getEntity()).trim();
-        } catch (ClientProtocolException e) {
-            return error;
+            return response.body().string().trim();
         } catch (IOException e) {
             return error;
         }