1 files changed, 161 insertions, 0 deletions
diff --git a/src/share/classes/sun/rmi/transport/proxy/HttpSendInputStream.java b/src/share/classes/sun/rmi/transport/proxy/HttpSendInputStream.java
new file mode 100644
index 000000000..48cba46cd
--- /dev/null
+++ b/src/share/classes/sun/rmi/transport/proxy/HttpSendInputStream.java
@@ -0,0 +1,161 @@
+/*
+ * Copyright 1996 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.rmi.transport.proxy;
+
+import java.io.*;
+
+/**
+ * The HttpSendInputStream class is used by the HttpSendSocket class as
+ * a layer on the top of the InputStream it returns so that it can be
+ * notified of attempts to read from it.  This allows the HttpSendSocket
+ * to know when it should push across its output message.
+ */
+class HttpSendInputStream extends FilterInputStream {
+
+    /** the HttpSendSocket object that is providing this stream */
+    HttpSendSocket owner;
+
+    /**
+     * Create new filter on a given input stream.
+     * @param in the InputStream to filter from
+     * @param owner the HttpSendSocket that is providing this stream
+     */
+    public HttpSendInputStream(InputStream in, HttpSendSocket owner)
+        throws IOException
+    {
+        super(in);
+
+        this.owner = owner;
+    }
+
+    /**
+     * Mark this stream as inactive for its owner socket, so the next time
+     * a read is attempted, the owner will be notified and a new underlying
+     * input stream obtained.
+     */
+    public void deactivate()
+    {
+        in = null;
+    }
+
+    /**
+     * Read a byte of data from the stream.
+     */
+    public int read() throws IOException
+    {
+        if (in == null)
+            in = owner.readNotify();
+        return in.read();
+    }
+
+    /**
+     * Read into an array of bytes.
+     * @param b the buffer into which the data is to be read
+     * @param off the start offset of the data
+     * @param len the maximum number of bytes to read
+     */
+    public int read(byte b[], int off, int len) throws IOException
+    {
+        if (len == 0)
+            return 0;
+        if (in == null)
+            in = owner.readNotify();
+        return in.read(b, off, len);
+    }
+
+    /**
+     * Skip bytes of input.
+     * @param n the number of bytes to be skipped
+     */
+    public long skip(long n) throws IOException
+    {
+        if (n == 0)
+            return 0;
+        if (in == null)
+            in = owner.readNotify();
+        return in.skip(n);
+    }
+
+    /**
+     * Return the number of bytes that can be read without blocking.
+     */
+    public int available() throws IOException
+    {
+        if (in == null)
+            in = owner.readNotify();
+        return in.available();
+    }
+
+    /**
+     * Close the stream.
+     */
+    public void close() throws IOException
+    {
+        owner.close();
+    }
+
+    /**
+     * Mark the current position in the stream.
+     * @param readlimit how many bytes can be read before mark becomes invalid
+     */
+    public synchronized void mark(int readlimit)
+    {
+        if (in == null) {
+            try {
+                in = owner.readNotify();
+            }
+            catch (IOException e) {
+                return;
+            }
+        }
+        in.mark(readlimit);
+    }
+
+    /**
+     * Reposition the stream to the last marked position.
+     */
+    public synchronized void reset() throws IOException
+    {
+        if (in == null)
+            in = owner.readNotify();
+        in.reset();
+    }
+
+    /**
+     * Return true if this stream type supports mark/reset.
+     */
+    public boolean markSupported()
+    {
+        if (in == null) {
+            try {
+                in = owner.readNotify();
+            }
+            catch (IOException e) {
+                return false;
+            }
+        }
+        return in.markSupported();
+    }
+}