fix issue #2: [Android 4.1.x - 4.4.x] some video URLs don't load

android-studio-project/ExoPlayer-AirPlay-Receiver/src/main/java/com/github/warren_bank/exoplayer_airplay_receiver/MainApp.java

@@ -1,11 +1,15 @@
 package com.github.warren_bank.exoplayer_airplay_receiver;
 
-import java.util.concurrent.ConcurrentHashMap;
+import com.github.warren_bank.exoplayer_airplay_receiver.utils.TLSSocketFactory;
 
 import android.app.Application;
+import android.os.Build;
 import android.os.Handler;
 import android.os.Message;
 
+import java.util.concurrent.ConcurrentHashMap;
+import javax.net.ssl.HttpsURLConnection;
+
 public class MainApp extends Application {
   private static MainApp instance;
 
@@ -33,6 +37,18 @@ public static void broadcastMessage(Message msg) {
   public void onCreate() {
     super.onCreate();
     instance = this;
+
+    if (
+      (Build.VERSION.SDK_INT >= 16) &&
+      (Build.VERSION.SDK_INT <  20)
+    ) {
+      try {
+        TLSSocketFactory socketFactory = new TLSSocketFactory();
+
+        HttpsURLConnection.setDefaultSSLSocketFactory(socketFactory);
+      }
+      catch(Exception e) {}
+    }
   }
 
   public ConcurrentHashMap<String, Handler> getHandlerMap() {

android-studio-project/ExoPlayer-AirPlay-Receiver/src/main/java/com/github/warren_bank/exoplayer_airplay_receiver/service/NetworkingService.java

@@ -73,7 +73,7 @@ public void onCreate() {
     toast.show();
     showNotification();
 
-    airplayName = android.os.Build.MODEL + "@" + airplayName;
+    airplayName = Build.MODEL + "@" + airplayName;
 
     new Thread() {
       public void run() {

android-studio-project/ExoPlayer-AirPlay-Receiver/src/main/java/com/github/warren_bank/exoplayer_airplay_receiver/utils/SystemUtils.java

@@ -16,7 +16,7 @@ public class SystemUtils {
      * source: https://stackoverflow.com/a/28747907
      */
     public static boolean isScreenOn(Context context) {
-        if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {
             DisplayManager dm = (DisplayManager) context.getSystemService(Context.DISPLAY_SERVICE);
             boolean screenOn = false;
             for (Display display : dm.getDisplays()) {

android-studio-project/ExoPlayer-AirPlay-Receiver/src/main/java/com/github/warren_bank/exoplayer_airplay_receiver/utils/TLSSocketFactory.java

@@ -0,0 +1,73 @@
+package com.github.warren_bank.exoplayer_airplay_receiver.utils;
+
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.Socket;
+import java.net.UnknownHostException;
+import java.security.KeyManagementException;
+import java.security.NoSuchAlgorithmException;
+
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLSocket;
+import javax.net.ssl.SSLSocketFactory;
+
+/**
+ * https://blog.dev-area.net/2015/08/13/android-4-1-enable-tls-1-1-and-tls-1-2/
+ */
+public class TLSSocketFactory extends SSLSocketFactory {
+
+    private SSLSocketFactory internalSSLSocketFactory;
+
+    public TLSSocketFactory() throws KeyManagementException, NoSuchAlgorithmException {
+        SSLContext context = SSLContext.getInstance("TLS");
+        context.init(null, null, null);
+        internalSSLSocketFactory = context.getSocketFactory();
+    }
+
+    @Override
+    public String[] getDefaultCipherSuites() {
+        return internalSSLSocketFactory.getDefaultCipherSuites();
+    }
+
+    @Override
+    public String[] getSupportedCipherSuites() {
+        return internalSSLSocketFactory.getSupportedCipherSuites();
+    }
+
+    @Override
+    public Socket createSocket() throws IOException {
+        return enableTLSOnSocket(internalSSLSocketFactory.createSocket());
+    }
+
+    @Override
+    public Socket createSocket(Socket s, String host, int port, boolean autoClose) throws IOException {
+        return enableTLSOnSocket(internalSSLSocketFactory.createSocket(s, host, port, autoClose));
+    }
+
+    @Override
+    public Socket createSocket(String host, int port) throws IOException, UnknownHostException {
+        return enableTLSOnSocket(internalSSLSocketFactory.createSocket(host, port));
+    }
+
+    @Override
+    public Socket createSocket(String host, int port, InetAddress localHost, int localPort) throws IOException, UnknownHostException {
+        return enableTLSOnSocket(internalSSLSocketFactory.createSocket(host, port, localHost, localPort));
+    }
+
+    @Override
+    public Socket createSocket(InetAddress host, int port) throws IOException {
+        return enableTLSOnSocket(internalSSLSocketFactory.createSocket(host, port));
+    }
+
+    @Override
+    public Socket createSocket(InetAddress address, int port, InetAddress localAddress, int localPort) throws IOException {
+        return enableTLSOnSocket(internalSSLSocketFactory.createSocket(address, port, localAddress, localPort));
+    }
+
+    private Socket enableTLSOnSocket(Socket socket) {
+        if(socket != null && (socket instanceof SSLSocket)) {
+            ((SSLSocket)socket).setEnabledProtocols(new String[] {"TLSv1.1", "TLSv1.2"});
+        }
+        return socket;
+    }
+}

android-studio-project/constants.gradle

@@ -1,6 +1,6 @@
 project.ext {
-    releaseVersionCode = Integer.parseInt("001000716", 10)
-    releaseVersion      = '001.00.07-16API'
+    releaseVersionCode = Integer.parseInt("001000816", 10)
+    releaseVersion      = '001.00.08-16API'
     minSdkVersion       = 16
     targetSdkVersion    = 28
     compileSdkVersion   = 28