| /* |
| * Copyright (c) 1996, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package sun.rmi.transport.proxy; |
| |
| import java.io.*; |
| |
| /** |
| * The HttpOutputStream class assists the HttpSendSocket and HttpReceiveSocket |
| * classes by providing an output stream that buffers its entire input until |
| * closed, and then it sends the complete transmission prefixed by the end of |
| * an HTTP header that specifies the content length. |
| */ |
| class HttpOutputStream extends ByteArrayOutputStream { |
| |
| /** the output stream to send response to */ |
| protected OutputStream out; |
| |
| /** true if HTTP response has been sent */ |
| boolean responseSent = false; |
| |
| /** |
| * Begin buffering new HTTP response to be sent to a given stream. |
| * @param out the OutputStream to send response to |
| */ |
| public HttpOutputStream(OutputStream out) { |
| super(); |
| this.out = out; |
| } |
| |
| /** |
| * On close, send HTTP-packaged response. |
| */ |
| public synchronized void close() throws IOException { |
| if (!responseSent) { |
| /* |
| * If response would have zero content length, then make it |
| * have some arbitrary data so that certain clients will not |
| * fail because the "document contains no data". |
| */ |
| if (size() == 0) |
| write(emptyData); |
| |
| DataOutputStream dos = new DataOutputStream(out); |
| dos.writeBytes("Content-type: application/octet-stream\r\n"); |
| dos.writeBytes("Content-length: " + size() + "\r\n"); |
| dos.writeBytes("\r\n"); |
| writeTo(dos); |
| dos.flush(); |
| // Do not close the underlying stream here, because that would |
| // close the underlying socket and prevent reading a response. |
| reset(); // reset byte array |
| responseSent = true; |
| } |
| } |
| |
| /** data to send if the response would otherwise be empty */ |
| private static byte[] emptyData = { 0 }; |
| } |