128 lines · 4.6 KB · Java
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/* * Copyright (c) 1996, 2000, 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.*;import java.net.Socket;import java.net.InetAddress; /** * The HttpReceiveSocket class extends the WrappedSocket class * by removing the HTTP protocol packaging from the input stream and * formatting the output stream as an HTTP response. * * NOTES: * * The output stream must be explicitly closed for the output to be * sent, since the HttpResponseOutputStream needs to buffer the entire * transmission to be able to fill in the content-length field of * the HTTP header.  Closing this socket will do this. * * The constructor blocks until the HTTP protocol header * is received.  This could be fixed, but I don't think it should be a * problem because this object would not be created unless the * HttpAwareServerSocket has detected the beginning of the header * anyway, so the rest should be there. * * This socket can only be used to process one POST and reply to it. * Another message would be received on a newly accepted socket anyway. */public class HttpReceiveSocket extends WrappedSocket implements RMISocketInfo {     /** true if the HTTP header has pushed through the output stream yet */    private boolean headerSent = false;     /**     * Layer on top of a pre-existing Socket object, and use specified     * input and output streams.     * @param socket the pre-existing socket to use     * @param in the InputStream to use for this socket (can be null)     * @param out the OutputStream to use for this socket (can be null)     */    public HttpReceiveSocket(Socket socket, InputStream in, OutputStream out)        throws IOException    {        super(socket, in, out);         this.in = new HttpInputStream(in != null ? in :                                                   socket.getInputStream());        this.out = (out != null ? out :                    socket.getOutputStream());    }     /**     * Indicate that this socket is not reusable.     */    public boolean isReusable()    {        return false;    }     /**     * Get the address to which this socket is connected.  "null" is always     * returned (to indicate an unknown address) because the originating     * host's IP address cannot be reliably determined: both because the     * request probably went through a proxy server, and because if it was     * delivered by a local forwarder (CGI script or servlet), we do NOT     * want it to appear as if the call is coming from the local host (in     * case the remote object makes access control decisions based on the     * "client host" of a remote call; see bugid 4399040).     */    public InetAddress getInetAddress() {        return null;    }     /**     * Get an OutputStream for this socket.     */    public OutputStream getOutputStream() throws IOException    {        if (!headerSent) { // could this be done in constructor??            DataOutputStream dos = new DataOutputStream(out);            dos.writeBytes("HTTP/1.0 200 OK\r\n");            dos.flush();            headerSent = true;            out = new HttpOutputStream(out);        }        return out;    }     /**     * Close the socket.     */    public synchronized void close() throws IOException    {        getOutputStream().close(); // make sure response is sent        socket.close();    }     /**     * Return string representation of the socket.     */    public String toString()    {        return "HttpReceive" + socket.toString();    }}