Handle cancelled SelectionKey in interestOps access

Author: arturobernalg

httpcore5-h2/src/main/java/org/apache/hc/core5/http2/impl/nio/bootstrap/CancellableExecution.java

@@ -26,7 +26,6 @@
  */
 package org.apache.hc.core5.http2.impl.nio.bootstrap;
 
-import java.nio.channels.CancelledKeyException;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicReference;
 
@@ -49,11 +48,7 @@ public void setDependency(final Cancellable cancellable) {
         if (cancelled.get()) {
             final Cancellable dependency = dependencyRef.getAndSet(null);
             if (dependency != null) {
-                try {
-                    dependency.cancel();
-                } catch (final CancelledKeyException ignore) {
-                    // Session already gone; cancellation is effectively complete.
-                }
+                dependency.cancel();
             }
         }
     }
@@ -68,11 +63,7 @@ public boolean cancel() {
         if (cancelled.compareAndSet(false, true)) {
             final Cancellable dependency = dependencyRef.getAndSet(null);
             if (dependency != null) {
-                try {
-                    dependency.cancel();
-                } catch (final CancelledKeyException ignore) {
-                    // Session already gone; treat as successfully cancelled.
-                }
+                dependency.cancel();
             }
             return true;
         }

httpcore5/src/main/java/org/apache/hc/core5/reactor/IOSessionImpl.java

@@ -32,6 +32,7 @@
 import java.net.StandardSocketOptions;
 import java.nio.ByteBuffer;
 import java.nio.channels.ByteChannel;
+import java.nio.channels.CancelledKeyException;
 import java.nio.channels.SelectionKey;
 import java.nio.channels.SocketChannel;
 import java.util.Deque;
@@ -158,7 +159,11 @@ public SocketAddress getRemoteAddress() {
 
     @Override
     public int getEventMask() {
-        return this.key.interestOps();
+        try {
+            return this.key.interestOps();
+        } catch (final CancelledKeyException ignore) {
+            return 0;
+        }
     }
 
     @Override