jdk/src/share/classes/sun/security/ssl/AppOutputStream.java
changeset 2 90ce3da70b43
child 2061 5a32855b67d4
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/security/ssl/AppOutputStream.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,103 @@
+/*
+ * Copyright 1996-2007 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+
+package sun.security.ssl;
+
+import java.io.OutputStream;
+import java.io.IOException;
+
+/*
+ * Output stream for application data. This is the kind of stream
+ * that's handed out via SSLSocket.getOutputStream(). It's all the application
+ * ever sees.
+ *
+ * Once the initial handshake has completed, application data may be
+ * interleaved with handshake data. That is handled internally and remains
+ * transparent to the application.
+ *
+ * @author  David Brownell
+ */
+class AppOutputStream extends OutputStream {
+
+    private SSLSocketImpl c;
+    OutputRecord r;
+
+    // One element array used to implement the write(byte) method
+    private final byte[] oneByte = new byte[1];
+
+    AppOutputStream(SSLSocketImpl conn) {
+        r = new OutputRecord(Record.ct_application_data);
+        c = conn;
+    }
+
+    /**
+     * Write the data out, NOW.
+     */
+    synchronized public void write(byte b[], int off, int len)
+            throws IOException {
+        // check if the Socket is invalid (error or closed)
+        c.checkWrite();
+        //
+        // Always flush at the end of each application level record.
+        // This lets application synchronize read and write streams
+        // however they like; if we buffered here, they couldn't.
+        //
+        // NOTE: *must* call c.writeRecord() even for len == 0
+        try {
+            do {
+                int howmuch = Math.min(len, r.availableDataBytes());
+
+                if (howmuch > 0) {
+                    r.write(b, off, howmuch);
+                    off += howmuch;
+                    len -= howmuch;
+                }
+                c.writeRecord(r);
+                c.checkWrite();
+            } while (len > 0);
+        } catch (Exception e) {
+            // shutdown and rethrow (wrapped) exception as appropriate
+            c.handleException(e);
+        }
+    }
+
+    /**
+     * Write one byte now.
+     */
+    synchronized public void write(int i) throws IOException {
+        oneByte[0] = (byte)i;
+        write(oneByte, 0, 1);
+    }
+
+    /*
+     * Socket close is already synchronized, no need to block here.
+     */
+    public void close() throws IOException {
+        c.close();
+    }
+
+    // inherit no-op flush()
+}