diff options
Diffstat (limited to 'engine/src/networking/com/jme3/network/kernel/tcp/SocketConnector.java')
-rw-r--r-- | engine/src/networking/com/jme3/network/kernel/tcp/SocketConnector.java | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/engine/src/networking/com/jme3/network/kernel/tcp/SocketConnector.java b/engine/src/networking/com/jme3/network/kernel/tcp/SocketConnector.java new file mode 100644 index 0000000..66d2040 --- /dev/null +++ b/engine/src/networking/com/jme3/network/kernel/tcp/SocketConnector.java @@ -0,0 +1,150 @@ +/* + * Copyright (c) 2011 jMonkeyEngine + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * * Neither the name of 'jMonkeyEngine' nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +package com.jme3.network.kernel.tcp; + +import com.jme3.network.kernel.Connector; +import com.jme3.network.kernel.ConnectorException; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.net.InetAddress; +import java.net.Socket; +import java.net.SocketAddress; +import java.nio.ByteBuffer; +import java.util.concurrent.atomic.AtomicBoolean; + + +/** + * A straight forward socket-based connector implementation that + * does not use any separate threading. It relies completely on + * the buffering in the OS network layer. + * + * @version $Revision: 8843 $ + * @author Paul Speed + */ +public class SocketConnector implements Connector +{ + private Socket sock; + private InputStream in; + private OutputStream out; + private SocketAddress remoteAddress; + private byte[] buffer = new byte[65535]; + private AtomicBoolean connected = new AtomicBoolean(false); + + public SocketConnector( InetAddress address, int port ) throws IOException + { + this.sock = new Socket(address, port); + remoteAddress = sock.getRemoteSocketAddress(); // for info purposes + + // Disable Nagle's buffering so data goes out when we + // put it there. + sock.setTcpNoDelay(true); + + in = sock.getInputStream(); + out = sock.getOutputStream(); + + connected.set(true); + } + + protected void checkClosed() + { + if( sock == null ) + throw new ConnectorException( "Connection is closed:" + remoteAddress ); + } + + public boolean isConnected() + { + if( sock == null ) + return false; + return sock.isConnected(); + } + + public void close() + { + checkClosed(); + try { + Socket temp = sock; + sock = null; + connected.set(false); + temp.close(); + } catch( IOException e ) { + throw new ConnectorException( "Error closing socket for:" + remoteAddress, e ); + } + } + + public boolean available() + { + checkClosed(); + try { + return in.available() > 0; + } catch( IOException e ) { + throw new ConnectorException( "Error retrieving data availability for:" + remoteAddress, e ); + } + } + + public ByteBuffer read() + { + checkClosed(); + + try { + // Read what we can + int count = in.read(buffer); + if( count < 0 ) { + // Socket is closed + close(); + return null; + } + + // Wrap it in a ByteBuffer for the caller + return ByteBuffer.wrap( buffer, 0, count ); + } catch( IOException e ) { + if( !connected.get() ) { + // Nothing to see here... just move along + return null; + } + throw new ConnectorException( "Error reading from connection to:" + remoteAddress, e ); + } + } + + public void write( ByteBuffer data ) + { + checkClosed(); + + try { + out.write(data.array(), data.position(), data.remaining()); + } catch( IOException e ) { + throw new ConnectorException( "Error writing to connection:" + remoteAddress, e ); + } + } + +} |