Testing: adjust WolfSSLEngineTest to properly close sockets and close ExecutorService

src/test/com/wolfssl/provider/jsse/test/WolfSSLEngineTest.java

@@ -1232,8 +1232,10 @@ public class WolfSSLEngineTest {
 
         /* Start up simple TLS test server */
         CountDownLatch serverOpenLatch = new CountDownLatch(1);
-        InternalMultiThreadedSSLSocketServer server =
-            new InternalMultiThreadedSSLSocketServer(svrPort, serverOpenLatch,
+        InternalMultiThreadedSSLSocketServer server = null;
+
+        try {
+            server = new InternalMultiThreadedSSLSocketServer(svrPort, serverOpenLatch,
                 numThreads);
             server.start();
 
@@ -1261,7 +1263,6 @@ public class WolfSSLEngineTest {
 
             /* Wait for all client threads to finish, else time out */
             returnWithoutTimeout = latch.await(10, TimeUnit.SECONDS);
-        server.join(1000);
 
             /* check failure count and success count against thread count */
             if (failures.get(0) == 0 && success.get(0) == numThreads) {
@@ -1278,6 +1279,29 @@ public class WolfSSLEngineTest {
                     fail("SSLEngine threading error, threads timed out");
                 }
             }
+        } finally {
+            /* Ensure proper cleanup in all cases */
+
+            /* Close server socket to ensure it's released */
+            if (server != null) {
+                server.closeSocket();
+                try {
+                    server.join(1000);
+                } catch (InterruptedException e) {
+                    /* Ignore */
+                }
+            }
+
+            /* Shutdown executor service and wait for it to terminate */
+            service.shutdown();
+            try {
+                if (!service.awaitTermination(5, TimeUnit.SECONDS)) {
+                    service.shutdownNow();
+                }
+            } catch (InterruptedException e) {
+                service.shutdownNow();
+            }
+        }
     }
 
     /**
@@ -1548,6 +1572,7 @@ public class WolfSSLEngineTest {
         private int serverPort;
         private CountDownLatch serverOpenLatch = null;
         private int clientConnections = 1;
+        private SSLServerSocket ss = null;
 
         public InternalMultiThreadedSSLSocketServer(
             int port, CountDownLatch openLatch, int clientConnections) {
@@ -1556,11 +1581,24 @@ public class WolfSSLEngineTest {
             this.clientConnections = clientConnections;
         }
 
+        /**
+         * Explicitly closes the server socket if still open
+         */
+        public void closeSocket() {
+            if (ss != null) {
+                try {
+                    ss.close();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+
         @Override
         public void run() {
             try {
                 SSLContext ctx = tf.createSSLContext("TLS", engineProvider);
-                SSLServerSocket ss = (SSLServerSocket)ctx
+                ss = (SSLServerSocket)ctx
                     .getServerSocketFactory().createServerSocket(serverPort);
 
                 while (clientConnections > 0) {
@@ -1573,6 +1611,15 @@ public class WolfSSLEngineTest {
 
             } catch (Exception e) {
                 e.printStackTrace();
+            } finally {
+                /* Ensure server socket is closed */
+                if (ss != null) {
+                    try {
+                        ss.close();
+                    } catch (IOException e) {
+                        e.printStackTrace();
+                    }
+                }
             }
         }
 
@@ -1592,9 +1639,17 @@ public class WolfSSLEngineTest {
                     sock.startHandshake();
                     sock.getInputStream().read(response);
                     sock.getOutputStream().write(msg.getBytes());
-                    sock.close();
                 } catch (Exception e) {
                     e.printStackTrace();
+                } finally {
+                    /* Ensure socket is closed */
+                    try {
+                        if (sock != null && !sock.isClosed()) {
+                            sock.close();
+                        }
+                    } catch (IOException e) {
+                        e.printStackTrace();
+                    }
                 }
             }
         }