Fix BZ 69982 Flush final block of TLS response payload

https://bz.apache.org/bugzilla/show_bug.cgi?id=69982

Author: philsttr

java/org/apache/tomcat/util/net/NioEndpoint.java

@@ -1379,6 +1379,25 @@ private boolean socketOrNetworkBufferHasDataLeft() {
             return !socketBufferHandler.isWriteBufferEmpty() || getSocket().getOutboundRemaining() > 0;
         }
 
+        /*
+         * https://bz.apache.org/bugzilla/show_bug.cgi?id=69982
+         *
+         * Similar to socketOrNetworkBufferHasDataLeft(), check the additional buffer for TLS
+         */
+        @Override
+        public boolean hasDataToWrite() {
+            return super.hasDataToWrite() || getSocket().getOutboundRemaining() > 0;
+        }
+
+        /*
+         * https://bz.apache.org/bugzilla/show_bug.cgi?id=69982
+         *
+         * Similar to socketOrNetworkBufferHasDataLeft(), check the additional buffer for TLS
+         */
+        @Override
+        public boolean canWrite() {
+            return super.canWrite() && getSocket().getOutboundRemaining() == 0;
+        }
 
         @Override
         protected void doWrite(boolean block, ByteBuffer buffer) throws IOException {