undefect. CWE-407 — 63 sites patched across 27 ecosystems

Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
2026-03-26 17:11:57 -04:00 · 2026-03-26 17:11:57 -04:00 · 0a580b313d
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions
--- a/test/jdk/java/nio/channels/Selector/Connect.java
+++ b/test/jdk/java/nio/channels/Selector/Connect.java
@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/* @test
+ * @bug 4511624
+ * @summary Test Making lots of Selectors
+ * @library .. /test/lib
+ * @build jdk.test.lib.Utils TestServers
+ * @run main Connect
+ */
+
+import java.net.*;
+import java.nio.*;
+import java.nio.channels.*;
+import java.nio.channels.spi.SelectorProvider;
+import java.util.*;
+
+public class Connect {
+
+    static int success = 0;
+    static int LIMIT = 100;
+
+    public static void main(String[] args) throws Exception {
+        try (TestServers.DayTimeServer daytimeServer
+                = TestServers.DayTimeServer.startNewServer(50)) {
+            scaleTest(daytimeServer);
+        }
+    }
+
+    static void scaleTest(TestServers.DayTimeServer daytimeServer)
+        throws Exception
+    {
+        InetAddress myAddress = daytimeServer.getAddress();
+        InetSocketAddress isa
+            = new InetSocketAddress(myAddress, daytimeServer.getPort());
+
+        for (int j=0; j<LIMIT; j++) {
+            SocketChannel sc = SocketChannel.open();
+            sc.configureBlocking(false);
+            boolean connected = sc.connect(isa);
+            if (!connected) {
+                Selector RSelector = SelectorProvider.provider().openSelector();
+                SelectionKey RKey = sc.register (RSelector, SelectionKey.OP_CONNECT);
+                while (!connected) {
+                    int keysAdded = RSelector.select(100);
+                    if (keysAdded > 0) {
+                        Set<SelectionKey> readyKeys = RSelector.selectedKeys();
+                        Iterator<SelectionKey> i = readyKeys.iterator();
+                        while (i.hasNext()) {
+                            SelectionKey sk = i.next();
+                            SocketChannel nextReady = (SocketChannel)sk.channel();
+                            connected = nextReady.finishConnect();
+                        }
+                        readyKeys.clear();
+                    }
+                }
+                RSelector.close();
+            }
+            readAndClose(sc);
+        }
+    }
+
+    static void readAndClose(SocketChannel sc) throws Exception {
+        ByteBuffer bb = ByteBuffer.allocateDirect(100);
+        int n = 0;
+        while (n == 0) // Note this is not a rigorous check for done reading
+            n = sc.read(bb);
+        //bb.position(bb.position() - 2);
+        //bb.flip();
+        //CharBuffer cb = Charset.forName("US-ASCII").newDecoder().decode(bb);
+        //System.out.println("Received: \"" + cb + "\"");
+        sc.close();
+        success++;
+    }
+}