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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/java/rmi/server/UnicastConnection.java | |
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Diffstat (limited to 'libjava/classpath/gnu/java/rmi/server/UnicastConnection.java')
-rw-r--r-- | libjava/classpath/gnu/java/rmi/server/UnicastConnection.java | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/rmi/server/UnicastConnection.java b/libjava/classpath/gnu/java/rmi/server/UnicastConnection.java new file mode 100644 index 000000000..8245e0469 --- /dev/null +++ b/libjava/classpath/gnu/java/rmi/server/UnicastConnection.java @@ -0,0 +1,231 @@ +/* UnicastConnection.java -- + Copyright (c) 1996, 1997, 1998, 1999, 2002, 2004 + Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.java.rmi.server; + +import java.io.BufferedInputStream; +import java.io.BufferedOutputStream; +import java.io.DataInputStream; +import java.io.DataOutputStream; +import java.io.IOException; +import java.io.ObjectInputStream; +import java.io.ObjectOutputStream; +import java.net.Socket; +import java.rmi.RemoteException; + +public class UnicastConnection + implements Runnable, ProtocolConstants { + +UnicastConnectionManager manager; +Socket sock; +DataInputStream din; +DataOutputStream dout; +ObjectInputStream oin; +ObjectOutputStream oout; + +// reviveTime and expireTime make UnicastConnection pool-able +long reviveTime = 0; +long expireTime = Long.MAX_VALUE; + +UnicastConnection(UnicastConnectionManager man, Socket sock) { + this.manager = man; + this.sock = sock; +} + +void acceptConnection() throws IOException { +//System.out.println("Accepting connection on " + sock); + //Use BufferedXXXStream would be more efficient + din = new DataInputStream(new BufferedInputStream(sock.getInputStream())); + dout = new DataOutputStream(new BufferedOutputStream(sock.getOutputStream())); + + int sig = din.readInt(); + if (sig != PROTOCOL_HEADER) { + throw new IOException("bad protocol header"); + } + short ver = din.readShort(); + if (ver != PROTOCOL_VERSION) { + throw new IOException("bad protocol version"); + } + int protocol = din.readUnsignedByte(); + if (protocol != SINGLE_OP_PROTOCOL) { + // Send an ACK + dout.writeByte(PROTOCOL_ACK); + + // Send my hostname and port + dout.writeUTF(manager.serverName); + dout.writeInt(manager.serverPort); + dout.flush(); + + // Read their hostname and port + String rhost = din.readUTF(); + int rport = din.readInt(); + } + // Okay, ready to roll ... +} + +void makeConnection(int protocol) throws IOException { + //Use BufferedXXXStream would be more efficient + din = new DataInputStream(new BufferedInputStream(sock.getInputStream())); + + dout = new DataOutputStream(new BufferedOutputStream(sock.getOutputStream())); + + // Send header + dout.writeInt(PROTOCOL_HEADER); + dout.writeShort(PROTOCOL_VERSION); + dout.writeByte(protocol); + dout.flush(); + + if (protocol != SINGLE_OP_PROTOCOL) { + // Get back ack. + int ack = din.readUnsignedByte(); + if (ack != PROTOCOL_ACK) { + throw new RemoteException("Unsupported protocol"); + } + + // Read in host and port + String dicard_rhost = din.readUTF(); + int discard_rport = din.readInt(); + + // Send them my endpoint + dout.writeUTF(manager.serverName); + dout.writeInt(manager.serverPort); + dout.flush(); + } + // Okay, ready to roll ... +} + +DataInputStream getDataInputStream() throws IOException { + return (din); +} + +DataOutputStream getDataOutputStream() throws IOException { + return (dout); +} + +/* +* +* get ObjectInputStream for reading more objects +* +*/ +ObjectInputStream getObjectInputStream() throws IOException { + if (oin == null) { + throw new IOException("no ObjectInputtream for reading more objects"); + } + return (oin); +} + +/** +* +* starts ObjectInputStream. +* +*/ +ObjectInputStream startObjectInputStream() throws IOException { + return (oin = new RMIObjectInputStream(din)); +} + +/** +* +* get ObjectOutputStream for sending more objects +* +*/ +ObjectOutputStream getObjectOutputStream() throws IOException { + if (oout == null) { + throw new IOException("no ObjectOutputStream for sending more objects"); + } + return (oout); +} + +/** +* +* starts ObjectOutputStream. +* +*/ +ObjectOutputStream startObjectOutputStream() throws IOException { + return (oout = new RMIObjectOutputStream(dout)); +} + +void disconnect() { + try { + if(oout != null) + oout.close(); + sock.close(); + } + catch (IOException _) { + } + + oin = null; + oout = null; + din = null; + dout = null; + sock = null; +} + +public static final long CONNECTION_TIMEOUT = 10000L; + +static boolean isExpired(UnicastConnection conn, long l){ + if (l <= conn.expireTime ) + return false; + return true; +} + +static void resetTime(UnicastConnection conn){ + long l = System.currentTimeMillis(); + conn.reviveTime = l; + conn.expireTime = l + CONNECTION_TIMEOUT; +} + +/** + * We run connects on the server. Dispatch it then discard it. + */ +public void run() { + do{ + try { + UnicastServer.dispatch(this); + //don't discardConnection explicitly, only when + // exception happens or the connection's expireTime + // comes + } catch (Exception e ){ + manager.discardConnection(this); + break; + } + }while(true); +} + + +} |