2 Copyright (c) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
4 This file is part of GNU Classpath.
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING. If not, write to the
18 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library. Thus, the terms and
23 conditions of the GNU General Public License cover the whole
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module. An independent module is a module which is not derived from
33 or based on this library. If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so. If you do not wish to do so, delete this
36 exception statement from your version. */
38 package gnu.java.rmi.server;
40 import java.rmi.Remote;
41 import java.rmi.RemoteException;
42 import java.rmi.server.RemoteRef;
43 import java.rmi.server.RMISocketFactory;
44 import java.rmi.server.RMIClientSocketFactory;
45 import java.rmi.server.RMIServerSocketFactory;
46 import java.rmi.server.RemoteObject;
47 import java.rmi.server.RemoteCall;
48 import java.rmi.server.UnicastRemoteObject;
49 import java.rmi.server.Operation;
50 import java.rmi.server.ObjID;
51 import java.rmi.server.UID;
52 import java.lang.reflect.Method;
53 import java.io.ObjectOutput;
54 import java.io.ObjectInput;
55 import java.io.IOException;
56 import java.net.Socket;
57 import java.net.InetAddress;
58 import java.io.BufferedInputStream;
59 import java.io.BufferedOutputStream;
60 import java.io.ObjectInputStream;
61 import java.io.ObjectOutputStream;
62 import java.io.DataInputStream;
63 import java.io.DataOutputStream;
65 public class UnicastRef
66 implements RemoteRef, ProtocolConstants {
69 UnicastConnectionManager manager;
72 * Used by serialization.
74 private UnicastRef() {
77 public UnicastRef(ObjID objid, String host, int port, RMIClientSocketFactory csf) {
79 manager = UnicastConnectionManager.getInstance(host, port, csf);
82 public UnicastRef(ObjID objid) {
86 public Object invoke(Remote obj, Method method, Object[] params, long opnum) throws Exception {
87 return (invokeCommon(obj, method, params, -1, opnum));
90 private Object invokeCommon(Remote obj, Method method, Object[] params, int opnum, long hash) throws Exception {
91 UnicastConnection conn;
93 conn = manager.getConnection();
95 catch (IOException e1) {
96 throw new RemoteException("connection failed to host: " + manager.serverName, e1);
99 ObjectOutputStream out;
100 DataOutputStream dout;
102 dout = conn.getDataOutputStream();
103 dout.writeByte(MESSAGE_CALL);
105 out = conn.getObjectOutputStream();
110 if (params != null) {
111 for (int i = 0; i < params.length; i++) {
112 if (params[i] instanceof UnicastRemoteObject) {
113 out.writeObject(UnicastRemoteObject.exportObject((UnicastRemoteObject)params[i]));
116 out.writeObject(params[i]);
123 catch (IOException e2) {
124 throw new RemoteException("call failed: ", e2);
130 ObjectInputStream in;
133 din = conn.getDataInputStream();
134 if (din.readUnsignedByte() != MESSAGE_CALL_ACK) {
135 throw new RemoteException("Call not acked");
138 in = conn.getObjectInputStream();
140 returncode = in.readUnsignedByte();
142 returnval = in.readObject();
144 catch (IOException e3) {
145 throw new RemoteException("call return failed: ", e3);
148 manager.discardConnection(conn);
150 if (returncode != RETURN_ACK) {
151 throw (Exception)returnval;
160 public RemoteCall newCall(RemoteObject obj, Operation[] op, int opnum, long hash) throws RemoteException {
161 return (new UnicastRemoteCall(obj, opnum, hash));
167 public void invoke(RemoteCall call) throws Exception {
168 UnicastRemoteCall c = (UnicastRemoteCall)call;
169 Object ret = invokeCommon((Remote)c.getObject(), (Method)null, c.getArguments(), c.getOpnum(), c.getHash());
170 c.setReturnValue(ret);
176 public void done(RemoteCall call) throws RemoteException {
180 public void writeExternal(ObjectOutput out) throws IOException {
181 if (manager == null) {
182 throw new IOException("no connection");
186 out.writeByte(RETURN_ACK);
189 public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
190 manager = UnicastConnectionManager.read(in);
191 objid = ObjID.read(in);
192 if (in.readByte() != RETURN_ACK) {
193 throw new IOException("no ack found");
197 public boolean remoteEquals(RemoteRef ref) {
198 throw new Error("Not implemented");
201 public int remoteHashCode() {
202 throw new Error("Not implemented");
205 public String getRefClass(ObjectOutput out) {
206 return ("UnicastRef");
209 public String remoteToString() {
210 throw new Error("Not implemented");
213 public void dump(UnicastConnection conn) {
215 DataInputStream din = conn.getDataInputStream();
217 int b = din.readUnsignedByte();
218 System.out.print(Integer.toHexString(b));
219 if (b >= 32 && b < 128) {
220 System.out.print(": " + (char)b);
222 System.out.println();
225 catch (IOException _) {