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/*
* Copyright 1996-2000 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.*;
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();
}
}
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