/*
* Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. 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.wso2.esb.integration.http;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.http.ConnectionClosedException;
import org.apache.http.HttpException;
import org.apache.http.HttpServerConnection;
import org.apache.http.impl.DefaultConnectionReuseStrategy;
import org.apache.http.impl.DefaultHttpResponseFactory;
import org.apache.http.impl.DefaultHttpServerConnection;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.CoreConnectionPNames;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.*;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Properties;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class SimpleHttpServer {
private static final Log log = LogFactory.getLog(SimpleHttpServer.class);
private int port;
private Properties properties;
private ServerSocket serverSocket;
private ExecutorService listener;
private ExecutorService workerPool;
private HttpParams params;
private HttpService httpService;
private boolean shutdown;
private TestRequestHandler requestHandler;
public SimpleHttpServer() {
this(8080, new Properties());
}
public SimpleHttpServer(int port, Properties properties) {
this.port = port;
this.properties = properties;
this.requestHandler = new TestRequestHandler();
}
public TestRequestHandler getRequestHandler() {
return requestHandler;
}
public void start() throws IOException {
serverSocket = new ServerSocket(port);
params = new BasicHttpParams();
params
.setIntParameter(CoreConnectionPNames.SO_TIMEOUT,
getParameter(CoreConnectionPNames.SO_TIMEOUT, 60000))
.setIntParameter(CoreConnectionPNames.SOCKET_BUFFER_SIZE,
getParameter(CoreConnectionPNames.SOCKET_BUFFER_SIZE, 8 * 1024))
.setBooleanParameter(CoreConnectionPNames.STALE_CONNECTION_CHECK,
getParameter(CoreConnectionPNames.STALE_CONNECTION_CHECK, 0) == 1)
.setBooleanParameter(CoreConnectionPNames.TCP_NODELAY,
getParameter(CoreConnectionPNames.TCP_NODELAY, 1) == 1)
.setParameter(CoreProtocolPNames.ORIGIN_SERVER, "WSO2ESB-Test-Server");
// Configure HTTP protocol processor
BasicHttpProcessor httpProcessor = new BasicHttpProcessor();
httpProcessor.addInterceptor(new ResponseDate());
httpProcessor.addInterceptor(new ResponseServer());
httpProcessor.addInterceptor(new ResponseContent());
httpProcessor.addInterceptor(new ResponseConnControl());
HttpRequestHandlerRegistry registry = new HttpRequestHandlerRegistry();
registry.register("*", requestHandler);
// Set up the HTTP service
httpService = new HttpService(
httpProcessor,
new DefaultConnectionReuseStrategy(),
new DefaultHttpResponseFactory());
httpService.setParams(params);
httpService.setHandlerResolver(registry);
listener = Executors.newSingleThreadExecutor();
workerPool = Executors.newFixedThreadPool(getParameter("ThreadCount", 2));
shutdown = false;
listener.submit(new HttpListener());
}
public void stop() throws IOException {
log.info("Shutting down simple HTTP server");
shutdown = true;
listener.shutdownNow();
workerPool.shutdownNow();
serverSocket.close();
}
private int getParameter(String name, int def) {
String val = properties.getProperty(name);
if (val != null && Integer.valueOf(val) > 0) {
return Integer.valueOf(val);
}
return def;
}
private class HttpListener implements Runnable {
public void run() {
log.info("Starting HTTP server on port: " + port);
while (!Thread.interrupted()) {
try {
// Set up HTTP connection
Socket socket = serverSocket.accept();
DefaultHttpServerConnection conn = new DefaultHttpServerConnection();
conn.bind(socket, params);
// Start worker thread
workerPool.submit(new ServerWorker(conn));
} catch (IOException e) {
if (!shutdown) {
log.error("I/O error while accepting a connection", e);
}
break;
}
}
}
}
private class ServerWorker implements Runnable {
private final HttpServerConnection conn;
public ServerWorker(HttpServerConnection conn) {
this.conn = conn;
}
public void run() {
HttpContext context = new BasicHttpContext(null);
context.setAttribute("CURRENT_CONN", conn);
try {
while (!Thread.interrupted() && conn.isOpen()) {
httpService.handleRequest(conn, context);
}
} catch (ConnectionClosedException ex) {
log.error("Client closed connection", ex);
} catch (IOException ex) {
log.error("I/O error", ex);
} catch (HttpException ex) {
log.error("Unrecoverable HTTP protocol violation", ex);
} finally {
try {
this.conn.shutdown();
} catch (IOException ignore) {}
}
}
}
}