7014860: Socket.getInputStream().available() not clear for shutdown input

Reviewed-by: alanb, michaelm

src/share/classes/java/net/AbstractPlainSocketImpl.java

@@ -457,10 +457,10 @@ abstract class AbstractPlainSocketImpl extends SocketImpl
         }
 
         /*
-         * If connection has been reset then return 0 to indicate
-         * there are no buffered bytes.
+         * If connection has been reset or shut down for input, then return 0
+         * to indicate there are no buffered bytes.
          */
-        if (isConnectionReset()) {
+        if (isConnectionReset() || shut_rd) {
             return 0;
         }
 

src/share/classes/java/net/Socket.java

@@ -28,7 +28,6 @@ package java.net;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.io.IOException;
-import java.io.InterruptedIOException;
 import java.nio.channels.SocketChannel;
 import java.security.AccessController;
 import java.security.PrivilegedExceptionAction;
@@ -1436,8 +1435,9 @@ class Socket implements java.io.Closeable {
      * Any data sent to the input stream side of the socket is acknowledged
      * and then silently discarded.
      * <p>
-     * If you read from a socket input stream after invoking
-     * shutdownInput() on the socket, the stream will return EOF.
+     * If you read from a socket input stream after invoking this method on the
+     * socket, the stream's {@code available} method will return 0, and its
+     * {@code read} methods will return {@code -1} (end of stream).
      *
      * @exception IOException if an I/O error occurs when shutting down this
      * socket.

src/share/classes/java/net/SocketImpl.java

@@ -181,8 +181,9 @@ public abstract class SocketImpl implements SocketOptions {
      * Any data sent to this socket is acknowledged and then
      * silently discarded.
      *
-     * If you read from a socket input stream after invoking
-     * shutdownInput() on the socket, the stream will return EOF.
+     * If you read from a socket input stream after invoking this method on the
+     * socket, the stream's {@code available} method will return 0, and its
+     * {@code read} methods will return {@code -1} (end of stream).
      *
      * @exception IOException if an I/O error occurs when shutting down this
      * socket.

test/java/net/Socket/ShutdownInput.java

+/*
+ * Copyright (c) 2011, 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 7014860
+ * @summary Socket.getInputStream().available() not clear for
+ *          case that connection is shutdown for reading
+ */
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.ServerSocket;
+import java.net.Socket;
+import java.nio.channels.ServerSocketChannel;
+import java.nio.channels.SocketChannel;
+
+public class ShutdownInput {
+    static boolean failed = false;
+
+    public static void main(String args[]) throws Exception {
+        InetAddress iaddr = InetAddress.getLocalHost();
+
+        try ( ServerSocket ss = new ServerSocket(0);
+              Socket s1 = new Socket(iaddr, ss.getLocalPort());
+              Socket s2 = ss.accept() ) {
+
+            test(s1, s2, "Testing NET");
+        }
+
+        // check the NIO socket adapter
+        try (ServerSocketChannel sc = ServerSocketChannel.open().bind(null);
+             SocketChannel s1 = SocketChannel.open(
+                     new InetSocketAddress(iaddr, sc.socket().getLocalPort()));
+             SocketChannel s2 = sc.accept() ) {
+
+            test(s1.socket(), s2.socket(), "Testing NIO");
+        }
+
+        if (failed) {
+            throw new RuntimeException("Failed: check output");
+        }
+    }
+
+    public static void test(Socket s1, Socket s2, String mesg) throws Exception {
+        OutputStream os = s1.getOutputStream();
+        os.write("This is a message".getBytes("US-ASCII"));
+
+        InputStream in = s2.getInputStream();
+        s2.shutdownInput();
+
+        if (in.available() != 0) {
+            failed = true;
+            System.out.println(mesg + ":" + s2 + " in.available() should be 0, " +
+                               "but returns "+ in.available());
+        }
+
+        byte[] ba = new byte[2];
+        if (in.read() != -1 ||
+            in.read(ba) != -1 ||
+            in.read(ba, 0, ba.length) != -1) {
+
+            failed = true;
+            System.out.append(mesg + ":" + s2 + " in.read() should be -1");
+        }
+    }
+}