/*
* $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/tags/4.0/module-nio/src/examples/org/apache/http/examples/nio/NHttpServer.java $
* $Revision: 744516 $
* $Date: 2009-02-14 17:38:14 +0100 (Sat, 14 Feb 2009) $
*
* ====================================================================
* 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.http.examples.nio;
import java.io.File;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.net.InetSocketAddress;
import java.net.URLDecoder;
import java.util.Locale;
import org.apache.http.HttpEntity;
import org.apache.http.HttpEntityEnclosingRequest;
import org.apache.http.HttpException;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.MethodNotSupportedException;
import org.apache.http.impl.DefaultConnectionReuseStrategy;
import org.apache.http.impl.DefaultHttpResponseFactory;
import org.apache.http.impl.nio.DefaultServerIOEventDispatch;
import org.apache.http.impl.nio.reactor.DefaultListeningIOReactor;
import org.apache.http.nio.NHttpConnection;
import org.apache.http.nio.entity.NFileEntity;
import org.apache.http.nio.entity.NStringEntity;
import org.apache.http.nio.protocol.BufferingHttpServiceHandler;
import org.apache.http.nio.protocol.EventListener;
import org.apache.http.nio.reactor.IOEventDispatch;
import org.apache.http.nio.reactor.ListeningIOReactor;
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.BasicHttpProcessor;
import org.apache.http.protocol.HttpContext;
import org.apache.http.protocol.HttpRequestHandler;
import org.apache.http.protocol.HttpRequestHandlerRegistry;
import org.apache.http.protocol.ResponseConnControl;
import org.apache.http.protocol.ResponseContent;
import org.apache.http.protocol.ResponseDate;
import org.apache.http.protocol.ResponseServer;
import org.apache.http.util.EntityUtils;
/**
* Basic, yet fully functional and spec compliant, HTTP/1.1 server based on the non-blocking
* I/O model.
* <p>
* Please note the purpose of this application is demonstrate the usage of HttpCore APIs.
* It is NOT intended to demonstrate the most efficient way of building an HTTP server.
*
*
* @version $Revision: 744516 $
*/
public class NHttpServer {
public static void main(String[] args) throws Exception {
if (args.length < 1) {
System.err.println("Please specify document root directory");
System.exit(1);
}
HttpParams params = new BasicHttpParams();
params
.setIntParameter(CoreConnectionPNames.SO_TIMEOUT, 5000)
.setIntParameter(CoreConnectionPNames.SOCKET_BUFFER_SIZE, 8 * 1024)
.setBooleanParameter(CoreConnectionPNames.STALE_CONNECTION_CHECK, false)
.setBooleanParameter(CoreConnectionPNames.TCP_NODELAY, true)
.setParameter(CoreProtocolPNames.ORIGIN_SERVER, "HttpComponents/1.1");
BasicHttpProcessor httpproc = new BasicHttpProcessor();
httpproc.addInterceptor(new ResponseDate());
httpproc.addInterceptor(new ResponseServer());
httpproc.addInterceptor(new ResponseContent());
httpproc.addInterceptor(new ResponseConnControl());
BufferingHttpServiceHandler handler = new BufferingHttpServiceHandler(
httpproc,
new DefaultHttpResponseFactory(),
new DefaultConnectionReuseStrategy(),
params);
// Set up request handlers
HttpRequestHandlerRegistry reqistry = new HttpRequestHandlerRegistry();
reqistry.register("*", new HttpFileHandler(args[0]));
handler.setHandlerResolver(reqistry);
// Provide an event logger
handler.setEventListener(new EventLogger());
IOEventDispatch ioEventDispatch = new DefaultServerIOEventDispatch(handler, params);
ListeningIOReactor ioReactor = new DefaultListeningIOReactor(2, params);
try {
ioReactor.listen(new InetSocketAddress(8080));
ioReactor.execute(ioEventDispatch);
} catch (InterruptedIOException ex) {
System.err.println("Interrupted");
} catch (IOException e) {
System.err.println("I/O error: " + e.getMessage());
}
System.out.println("Shutdown");
}
static class HttpFileHandler implements HttpRequestHandler {
private final String docRoot;
public HttpFileHandler(final String docRoot) {
super();
this.docRoot = docRoot;
}
public void handle(
final HttpRequest request,
final HttpResponse response,
final HttpContext context) throws HttpException, IOException {
String method = request.getRequestLine().getMethod().toUpperCase(Locale.ENGLISH);
if (!method.equals("GET") && !method.equals("HEAD") && !method.equals("POST")) {
throw new MethodNotSupportedException(method + " method not supported");
}
if (request instanceof HttpEntityEnclosingRequest) {
HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity();
byte[] entityContent = EntityUtils.toByteArray(entity);
System.out.println("Incoming entity content (bytes): " + entityContent.length);
}
String target = request.getRequestLine().getUri();
final File file = new File(this.docRoot, URLDecoder.decode(target, "UTF-8"));
if (!file.exists()) {
response.setStatusCode(HttpStatus.SC_NOT_FOUND);
NStringEntity entity = new NStringEntity(
"<html><body><h1>File" + file.getPath() +
" not found</h1></body></html>", "UTF-8");
entity.setContentType("text/html; charset=UTF-8");
response.setEntity(entity);
System.out.println("File " + file.getPath() + " not found");
} else if (!file.canRead() || file.isDirectory()) {
response.setStatusCode(HttpStatus.SC_FORBIDDEN);
NStringEntity entity = new NStringEntity(
"<html><body><h1>Access denied</h1></body></html>",
"UTF-8");
entity.setContentType("text/html; charset=UTF-8");
response.setEntity(entity);
System.out.println("Cannot read file " + file.getPath());
} else {
response.setStatusCode(HttpStatus.SC_OK);
NFileEntity body = new NFileEntity(file, "text/html");
response.setEntity(body);
System.out.println("Serving file " + file.getPath());
}
}
}
static class EventLogger implements EventListener {
public void connectionOpen(final NHttpConnection conn) {
System.out.println("Connection open: " + conn);
}
public void connectionTimeout(final NHttpConnection conn) {
System.out.println("Connection timed out: " + conn);
}
public void connectionClosed(final NHttpConnection conn) {
System.out.println("Connection closed: " + conn);
}
public void fatalIOException(final IOException ex, final NHttpConnection conn) {
System.err.println("I/O error: " + ex.getMessage());
}
public void fatalProtocolException(final HttpException ex, final NHttpConnection conn) {
System.err.println("HTTP error: " + ex.getMessage());
}
}
}