Add API Level check

Author: schmidt-sebastian

firebase-firestore/src/main/java/com/google/firebase/firestore/remote/AbstractStream.java

@@ -274,7 +274,7 @@ private void close(State finalState, Status status) {
     if (Datastore.isSslHandshakeError(status)) {
       // The Android device is missing required SSL Ciphers. This error is non-recoverable and must
       // be addressed by the app developer (see https://bit.ly/2XFpdma).
-      Util.crashMainThead(
+      Util.crashMainThread(
           new IllegalStateException(SSL_DEPENDENCY_ERROR_MESSAGE, status.getCause()));
     }
 

firebase-firestore/src/main/java/com/google/firebase/firestore/remote/Datastore.java

@@ -15,6 +15,7 @@
 package com.google.firebase.firestore.remote;
 
 import android.content.Context;
+import android.os.Build;
 import com.google.android.gms.tasks.Task;
 import com.google.firebase.firestore.FirebaseFirestoreException;
 import com.google.firebase.firestore.auth.CredentialsProvider;
@@ -230,7 +231,8 @@ public static boolean isSslHandshakeError(Status status) {
     Status.Code code = status.getCode();
     Throwable t = status.getCause();
 
-    return code.equals(Status.Code.UNAVAILABLE)
+    return Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP
+        && code.equals(Status.Code.UNAVAILABLE)
         && (t instanceof SSLHandshakeException
             || (t instanceof ConnectException && t.getMessage().contains("EHOSTUNREACH")));
   }

firebase-firestore/src/main/java/com/google/firebase/firestore/util/Util.java

@@ -214,8 +214,8 @@ public static String typeName(@Nullable Object obj) {
     return obj == null ? "null" : obj.getClass().getName();
   }
 
-  /** Raises an exception on Android's UI Thread. */
-  public static void crashMainThead(RuntimeException exception) {
+  /** Raises an exception on Android's UI Thread and crashes the end user's app. */
+  public static void crashMainThread(RuntimeException exception) {
     new Handler(Looper.getMainLooper())
         .post(
             () -> {