diff options
Diffstat (limited to 'src/share/classes/sun/rmi/transport/proxy/HttpAwareServerSocket.java')
-rw-r--r-- | src/share/classes/sun/rmi/transport/proxy/HttpAwareServerSocket.java | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/src/share/classes/sun/rmi/transport/proxy/HttpAwareServerSocket.java b/src/share/classes/sun/rmi/transport/proxy/HttpAwareServerSocket.java new file mode 100644 index 000000000..6c168c57a --- /dev/null +++ b/src/share/classes/sun/rmi/transport/proxy/HttpAwareServerSocket.java @@ -0,0 +1,114 @@ +/* + * Copyright 1996-2005 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.BufferedInputStream; +import java.io.IOException; +import java.net.ServerSocket; +import java.net.Socket; +import sun.rmi.runtime.Log; + +/** + * The HttpAwareServerSocket class extends the java.net.ServerSocket + * class. It behaves like a ServerSocket, except that if + * the first four bytes of an accepted socket are the letters "POST", + * then it returns an HttpReceiveSocket instead of a java.net.Socket. + * This means that the accept method blocks until four bytes have been + * read from the new socket's input stream. + */ +class HttpAwareServerSocket extends ServerSocket { + + /** + * Create a server socket on a specified port. + * @param port the port + * @exception IOException IO error when opening the socket. + */ + public HttpAwareServerSocket(int port) throws IOException + { + super(port); + } + + /** + * Create a server socket, bind it to the specified local port + * and listen to it. You can connect to an annonymous port by + * specifying the port number to be 0. <i>backlog</i> specifies + * how many connection requests the system will queue up while waiting + * for the ServerSocket to execute accept(). + * @param port the specified port + * @param backlog the number of queued connect requests pending accept + */ + public HttpAwareServerSocket(int port, int backlog) throws IOException + { + super(port, backlog); + } + + /** + * Accept a connection. This method will block until the connection + * is made and four bytes can be read from the input stream. + * If the first four bytes are "POST", then an HttpReceiveSocket is + * returned, which will handle the HTTP protocol wrapping. + * Otherwise, a WrappedSocket is returned. The input stream will be + * reset to the beginning of the transmission. + * In either case, a BufferedInputStream will already be on top of + * the underlying socket's input stream. + * @exception IOException IO error when waiting for the connection. + */ + public Socket accept() throws IOException + { + Socket socket = super.accept(); + BufferedInputStream in = + new BufferedInputStream(socket.getInputStream()); + + RMIMasterSocketFactory.proxyLog.log(Log.BRIEF, + "socket accepted (checking for POST)"); + + in.mark(4); + boolean isHttp = (in.read() == 'P') && + (in.read() == 'O') && + (in.read() == 'S') && + (in.read() == 'T'); + in.reset(); + + if (RMIMasterSocketFactory.proxyLog.isLoggable(Log.BRIEF)) { + RMIMasterSocketFactory.proxyLog.log(Log.BRIEF, + (isHttp ? "POST found, HTTP socket returned" : + "POST not found, direct socket returned")); + } + + if (isHttp) + return new HttpReceiveSocket(socket, in, null); + else + return new WrappedSocket(socket, in, null); + } + + /** + * Return the implementation address and implementation port of + * the HttpAwareServerSocket as a String. + */ + public String toString() + { + return "HttpAware" + super.toString(); + } +} |