| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.qpid.transport.network.io; |
| |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.net.InetSocketAddress; |
| import java.net.ServerSocket; |
| import java.net.Socket; |
| import java.net.SocketException; |
| import java.nio.ByteBuffer; |
| |
| import javax.net.ssl.SSLContext; |
| import javax.net.ssl.SSLServerSocketFactory; |
| |
| import org.apache.qpid.protocol.ProtocolEngine; |
| import org.apache.qpid.protocol.ProtocolEngineFactory; |
| import org.apache.qpid.transport.ConnectionSettings; |
| import org.apache.qpid.transport.NetworkTransportConfiguration; |
| import org.apache.qpid.transport.Receiver; |
| import org.apache.qpid.transport.TransportException; |
| import org.apache.qpid.transport.network.IncomingNetworkTransport; |
| import org.apache.qpid.transport.network.NetworkConnection; |
| import org.apache.qpid.transport.network.OutgoingNetworkTransport; |
| import org.slf4j.LoggerFactory; |
| |
| public class IoNetworkTransport implements OutgoingNetworkTransport, IncomingNetworkTransport |
| { |
| private static final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(IoNetworkTransport.class); |
| |
| private Socket _socket; |
| private IoNetworkConnection _connection; |
| private long _timeout = 60000; |
| private AcceptingThread _acceptor; |
| |
| public NetworkConnection connect(ConnectionSettings settings, Receiver<ByteBuffer> delegate, SSLContext sslContext) |
| { |
| int sendBufferSize = settings.getWriteBufferSize(); |
| int receiveBufferSize = settings.getReadBufferSize(); |
| |
| try |
| { |
| _socket = new Socket(); |
| _socket.setReuseAddress(true); |
| _socket.setTcpNoDelay(settings.isTcpNodelay()); |
| _socket.setSendBufferSize(sendBufferSize); |
| _socket.setReceiveBufferSize(receiveBufferSize); |
| |
| if(LOGGER.isDebugEnabled()) |
| { |
| LOGGER.debug("SO_RCVBUF : " + _socket.getReceiveBufferSize()); |
| LOGGER.debug("SO_SNDBUF : " + _socket.getSendBufferSize()); |
| LOGGER.debug("TCP_NODELAY : " + _socket.getTcpNoDelay()); |
| } |
| |
| InetAddress address = InetAddress.getByName(settings.getHost()); |
| |
| _socket.connect(new InetSocketAddress(address, settings.getPort())); |
| } |
| catch (SocketException e) |
| { |
| throw new TransportException("Error connecting to broker", e); |
| } |
| catch (IOException e) |
| { |
| throw new TransportException("Error connecting to broker", e); |
| } |
| |
| try |
| { |
| _connection = new IoNetworkConnection(_socket, delegate, sendBufferSize, receiveBufferSize, _timeout); |
| _connection.start(); |
| } |
| catch(Exception e) |
| { |
| try |
| { |
| _socket.close(); |
| } |
| catch(IOException ioe) |
| { |
| //ignored, throw based on original exception |
| } |
| |
| throw new TransportException("Error creating network connection", e); |
| } |
| |
| return _connection; |
| } |
| |
| public void close() |
| { |
| if(_connection != null) |
| { |
| _connection.close(); |
| } |
| if(_acceptor != null) |
| { |
| _acceptor.close(); |
| } |
| } |
| |
| public NetworkConnection getConnection() |
| { |
| return _connection; |
| } |
| |
| public void accept(NetworkTransportConfiguration config, ProtocolEngineFactory factory, SSLContext sslContext) |
| { |
| |
| try |
| { |
| _acceptor = new AcceptingThread(config, factory, sslContext); |
| _acceptor.setDaemon(false); |
| _acceptor.start(); |
| } |
| catch (IOException e) |
| { |
| throw new TransportException("Unable to start server socket", e); |
| } |
| |
| |
| } |
| |
| private class AcceptingThread extends Thread |
| { |
| private volatile boolean _closed = false; |
| private NetworkTransportConfiguration _config; |
| private ProtocolEngineFactory _factory; |
| private SSLContext _sslContext; |
| private ServerSocket _serverSocket; |
| |
| private AcceptingThread(NetworkTransportConfiguration config, |
| ProtocolEngineFactory factory, |
| SSLContext sslContext) |
| throws IOException |
| { |
| _config = config; |
| _factory = factory; |
| _sslContext = sslContext; |
| |
| InetSocketAddress address = config.getAddress(); |
| |
| if(sslContext == null) |
| { |
| _serverSocket = new ServerSocket(); |
| } |
| else |
| { |
| SSLServerSocketFactory socketFactory = _sslContext.getServerSocketFactory(); |
| _serverSocket = socketFactory.createServerSocket(); |
| } |
| |
| _serverSocket.setReuseAddress(true); |
| _serverSocket.bind(address); |
| |
| |
| } |
| |
| |
| /** |
| Close the underlying ServerSocket if it has not already been closed. |
| */ |
| public void close() |
| { |
| LOGGER.debug("Shutting down the Acceptor"); |
| _closed = true; |
| |
| if (!_serverSocket.isClosed()) |
| { |
| try |
| { |
| _serverSocket.close(); |
| } |
| catch (IOException e) |
| { |
| throw new TransportException(e); |
| } |
| } |
| } |
| |
| @Override |
| public void run() |
| { |
| try |
| { |
| while (!_closed) |
| { |
| Socket socket = null; |
| try |
| { |
| socket = _serverSocket.accept(); |
| socket.setTcpNoDelay(_config.getTcpNoDelay()); |
| |
| final Integer sendBufferSize = _config.getSendBufferSize(); |
| final Integer receiveBufferSize = _config.getReceiveBufferSize(); |
| |
| socket.setSendBufferSize(sendBufferSize); |
| socket.setReceiveBufferSize(receiveBufferSize); |
| |
| ProtocolEngine engine = _factory.newProtocolEngine(); |
| |
| NetworkConnection connection = new IoNetworkConnection(socket, engine, sendBufferSize, receiveBufferSize, _timeout); |
| |
| engine.setNetworkConnection(connection, connection.getSender()); |
| |
| connection.start(); |
| } |
| catch(RuntimeException e) |
| { |
| LOGGER.error("Error in Acceptor thread on port " + _config.getPort(), e); |
| closeSocketIfNecessary(socket); |
| } |
| catch(IOException e) |
| { |
| if(!_closed) |
| { |
| LOGGER.error("Error in Acceptor thread on port " + _config.getPort(), e); |
| closeSocketIfNecessary(socket); |
| try |
| { |
| //Delay to avoid tight spinning the loop during issues such as too many open files |
| Thread.sleep(1000); |
| } |
| catch (InterruptedException ie) |
| { |
| LOGGER.debug("Stopping acceptor due to interrupt request"); |
| _closed = true; |
| } |
| } |
| } |
| } |
| } |
| finally |
| { |
| if(LOGGER.isDebugEnabled()) |
| { |
| LOGGER.debug("Acceptor exiting, no new connections will be accepted on port " + _config.getPort()); |
| } |
| } |
| } |
| |
| private void closeSocketIfNecessary(final Socket socket) |
| { |
| if(socket != null) |
| { |
| try |
| { |
| socket.close(); |
| } |
| catch (IOException e) |
| { |
| LOGGER.debug("Exception while closing socket", e); |
| } |
| } |
| } |
| } |
| |
| } |