| /* |
| * 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.thrift.transport; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| import java.net.ServerSocket; |
| import java.net.SocketException; |
| import java.nio.channels.ClosedChannelException; |
| import java.nio.channels.SelectionKey; |
| import java.nio.channels.Selector; |
| import java.nio.channels.ServerSocketChannel; |
| import java.nio.channels.SocketChannel; |
| |
| /** |
| * Wrapper around ServerSocketChannel |
| */ |
| public class TNonblockingServerSocket extends TNonblockingServerTransport { |
| |
| /** |
| * This channel is where all the nonblocking magic happens. |
| */ |
| private ServerSocketChannel serverSocketChannel = null; |
| |
| /** |
| * Underlying serversocket object |
| */ |
| private ServerSocket serverSocket_ = null; |
| |
| /** |
| * Port to listen on |
| */ |
| private int port_ = 0; |
| |
| /** |
| * Timeout for client sockets from accept |
| */ |
| private int clientTimeout_ = 0; |
| |
| /** |
| * Creates a server socket from underlying socket object |
| */ |
| // public TNonblockingServerSocket(ServerSocket serverSocket) { |
| // this(serverSocket, 0); |
| // } |
| |
| /** |
| * Creates a server socket from underlying socket object |
| */ |
| // public TNonblockingServerSocket(ServerSocket serverSocket, int clientTimeout) { |
| // serverSocket_ = serverSocket; |
| // clientTimeout_ = clientTimeout; |
| // } |
| |
| /** |
| * Creates just a port listening server socket |
| */ |
| public TNonblockingServerSocket(int port) throws TTransportException { |
| this(port, 0); |
| } |
| |
| /** |
| * Creates just a port listening server socket |
| */ |
| public TNonblockingServerSocket(int port, int clientTimeout) throws TTransportException { |
| port_ = port; |
| clientTimeout_ = clientTimeout; |
| try { |
| serverSocketChannel = ServerSocketChannel.open(); |
| serverSocketChannel.configureBlocking(false); |
| |
| // Make server socket |
| serverSocket_ = serverSocketChannel.socket(); |
| // Prevent 2MSL delay problem on server restarts |
| serverSocket_.setReuseAddress(true); |
| // Bind to listening port |
| serverSocket_.bind(new InetSocketAddress(port_)); |
| } catch (IOException ioe) { |
| serverSocket_ = null; |
| throw new TTransportException("Could not create ServerSocket on port " + port + "."); |
| } |
| } |
| |
| public void listen() throws TTransportException { |
| // Make sure not to block on accept |
| if (serverSocket_ != null) { |
| try { |
| serverSocket_.setSoTimeout(0); |
| } catch (SocketException sx) { |
| sx.printStackTrace(); |
| } |
| } |
| } |
| |
| protected TNonblockingSocket acceptImpl() throws TTransportException { |
| if (serverSocket_ == null) { |
| throw new TTransportException(TTransportException.NOT_OPEN, "No underlying server socket."); |
| } |
| try { |
| SocketChannel socketChannel = serverSocketChannel.accept(); |
| if (socketChannel == null) { |
| return null; |
| } |
| |
| TNonblockingSocket tsocket = new TNonblockingSocket(socketChannel); |
| tsocket.setTimeout(clientTimeout_); |
| return tsocket; |
| } catch (IOException iox) { |
| throw new TTransportException(iox); |
| } |
| } |
| |
| public void registerSelector(Selector selector) { |
| try { |
| // Register the server socket channel, indicating an interest in |
| // accepting new connections |
| serverSocketChannel.register(selector, SelectionKey.OP_ACCEPT); |
| } catch (ClosedChannelException e) { |
| // this shouldn't happen, ideally... |
| // TODO: decide what to do with this. |
| } |
| } |
| |
| public void close() { |
| if (serverSocket_ != null) { |
| try { |
| serverSocket_.close(); |
| } catch (IOException iox) { |
| System.err.println("WARNING: Could not close server socket: " + |
| iox.getMessage()); |
| } |
| serverSocket_ = null; |
| } |
| } |
| |
| public void interrupt() { |
| // The thread-safeness of this is dubious, but Java documentation suggests |
| // that it is safe to do this from a different thread context |
| close(); |
| } |
| |
| } |