/*
* $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/tags/4.0/module-nio/src/test/java/org/apache/http/nio/protocol/TestNIOSSLHttp.java $
* $Revision: 744515 $
* $Date: 2009-02-14 17:36:56 +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.nio.protocol;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;
import junit.framework.Test;
import junit.framework.TestSuite;
import org.apache.http.HttpCoreNIOSSLTestBase;
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.HttpVersion;
import org.apache.http.entity.ByteArrayEntity;
import org.apache.http.entity.StringEntity;
import org.apache.http.message.BasicHttpEntityEnclosingRequest;
import org.apache.http.message.BasicHttpRequest;
import org.apache.http.mockup.ByteSequence;
import org.apache.http.mockup.RequestCount;
import org.apache.http.mockup.SimpleEventListener;
import org.apache.http.nio.NHttpClientHandler;
import org.apache.http.nio.NHttpConnection;
import org.apache.http.nio.NHttpServiceHandler;
import org.apache.http.nio.entity.NByteArrayEntity;
import org.apache.http.nio.entity.NHttpEntityWrapper;
import org.apache.http.nio.entity.NStringEntity;
import org.apache.http.nio.protocol.HttpRequestExecutionHandler;
import org.apache.http.nio.reactor.ListenerEndpoint;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.protocol.ExecutionContext;
import org.apache.http.protocol.HttpContext;
import org.apache.http.protocol.HttpRequestHandler;
import org.apache.http.util.EntityUtils;
/**
* HttpCore NIO SSL tests.
*
*
* @version $Id: TestNIOSSLHttp.java 744515 2009-02-14 16:36:56Z sebb $
*/
public class TestNIOSSLHttp extends HttpCoreNIOSSLTestBase {
// ------------------------------------------------------------ Constructor
public TestNIOSSLHttp(String testName) {
super(testName);
}
// ------------------------------------------------------------------- Main
public static void main(String args[]) {
String[] testCaseName = { TestNIOSSLHttp.class.getName() };
junit.textui.TestRunner.main(testCaseName);
}
// ------------------------------------------------------- TestCase Methods
public static Test suite() {
return new TestSuite(TestNIOSSLHttp.class);
}
/**
* This test case executes a series of simple (non-pipelined) GET requests
* over multiple connections.
*/
public void testSimpleHttpGets() throws Exception {
final int connNo = 3;
final int reqNo = 20;
final RequestCount requestCount = new RequestCount(connNo * reqNo);
final ByteSequence requestData = new ByteSequence();
requestData.rnd(reqNo);
List<ByteSequence> responseData = new ArrayList<ByteSequence>(connNo);
for (int i = 0; i < connNo; i++) {
responseData.add(new ByteSequence());
}
HttpRequestHandler requestHandler = new HttpRequestHandler() {
public void handle(
final HttpRequest request,
final HttpResponse response,
final HttpContext context) throws HttpException, IOException {
String s = request.getRequestLine().getUri();
URI uri;
try {
uri = new URI(s);
} catch (URISyntaxException ex) {
throw new HttpException("Invalid request URI: " + s);
}
int index = Integer.parseInt(uri.getQuery());
byte[] bytes = requestData.getBytes(index);
NByteArrayEntity entity = new NByteArrayEntity(bytes);
response.setEntity(entity);
}
};
HttpRequestExecutionHandler requestExecutionHandler = new HttpRequestExecutionHandler() {
public void initalizeContext(final HttpContext context, final Object attachment) {
context.setAttribute("LIST", attachment);
context.setAttribute("REQ-COUNT", Integer.valueOf(0));
context.setAttribute("RES-COUNT", Integer.valueOf(0));
}
public void finalizeContext(final HttpContext context) {
}
public HttpRequest submitRequest(final HttpContext context) {
int i = ((Integer) context.getAttribute("REQ-COUNT")).intValue();
BasicHttpRequest get = null;
if (i < reqNo) {
get = new BasicHttpRequest("GET", "/?" + i);
context.setAttribute("REQ-COUNT", Integer.valueOf(i + 1));
}
return get;
}
public void handleResponse(final HttpResponse response, final HttpContext context) {
NHttpConnection conn = (NHttpConnection) context.getAttribute(
ExecutionContext.HTTP_CONNECTION);
ByteSequence list = (ByteSequence) context.getAttribute("LIST");
int i = ((Integer) context.getAttribute("RES-COUNT")).intValue();
i++;
context.setAttribute("RES-COUNT", Integer.valueOf(i));
try {
HttpEntity entity = response.getEntity();
byte[] data = EntityUtils.toByteArray(entity);
list.addBytes(data);
requestCount.decrement();
} catch (IOException ex) {
requestCount.abort();
}
if (i < reqNo) {
conn.requestInput();
}
}
};
NHttpServiceHandler serviceHandler = createHttpServiceHandler(
requestHandler,
null,
new SimpleEventListener());
NHttpClientHandler clientHandler = createHttpClientHandler(
requestExecutionHandler,
new SimpleEventListener());
this.server.setRequestCount(requestCount);
this.client.setRequestCount(requestCount);
this.server.start(serviceHandler);
this.client.start(clientHandler);
ListenerEndpoint endpoint = this.server.getListenerEndpoint();
endpoint.waitFor();
InetSocketAddress serverAddress = (InetSocketAddress) endpoint.getAddress();
for (int i = 0; i < responseData.size(); i++) {
this.client.openConnection(
new InetSocketAddress("localhost", serverAddress.getPort()),
responseData.get(i));
}
requestCount.await(10000);
assertEquals(0, requestCount.getValue());
this.client.shutdown();
this.server.shutdown();
for (int c = 0; c < responseData.size(); c++) {
ByteSequence receivedPackets = responseData.get(c);
ByteSequence expectedPackets = requestData;
assertEquals(expectedPackets.size(), receivedPackets.size());
for (int p = 0; p < requestData.size(); p++) {
byte[] expected = requestData.getBytes(p);
byte[] received = receivedPackets.getBytes(p);
assertEquals(expected.length, received.length);
for (int i = 0; i < expected.length; i++) {
assertEquals(expected[i], received[i]);
}
}
}
}
/**
* This test case executes a series of simple (non-pipelined) POST requests
* with content length delimited content over multiple connections.
*/
public void testSimpleBasicHttpEntityEnclosingRequestsWithContentLength() throws Exception {
final int connNo = 3;
final int reqNo = 20;
final RequestCount requestCount = new RequestCount(connNo * reqNo);
final ByteSequence requestData = new ByteSequence();
requestData.rnd(reqNo);
List<ByteSequence> responseData = new ArrayList<ByteSequence>(connNo);
for (int i = 0; i < connNo; i++) {
responseData.add(new ByteSequence());
}
HttpRequestHandler requestHandler = new HttpRequestHandler() {
public void handle(
final HttpRequest request,
final HttpResponse response,
final HttpContext context) throws HttpException, IOException {
if (request instanceof HttpEntityEnclosingRequest) {
HttpEntity incoming = ((HttpEntityEnclosingRequest) request).getEntity();
byte[] data = EntityUtils.toByteArray(incoming);
NByteArrayEntity outgoing = new NByteArrayEntity(data);
outgoing.setChunked(false);
response.setEntity(outgoing);
} else {
NStringEntity outgoing = new NStringEntity("No content");
response.setEntity(outgoing);
}
}
};
HttpRequestExecutionHandler requestExecutionHandler = new HttpRequestExecutionHandler() {
public void initalizeContext(final HttpContext context, final Object attachment) {
context.setAttribute("LIST", attachment);
context.setAttribute("REQ-COUNT", Integer.valueOf(0));
context.setAttribute("RES-COUNT", Integer.valueOf(0));
}
public void finalizeContext(final HttpContext context) {
}
public HttpRequest submitRequest(final HttpContext context) {
int i = ((Integer) context.getAttribute("REQ-COUNT")).intValue();
BasicHttpEntityEnclosingRequest post = null;
if (i < reqNo) {
post = new BasicHttpEntityEnclosingRequest("POST", "/?" + i);
byte[] bytes = requestData.getBytes(i);
NByteArrayEntity outgoing = new NByteArrayEntity(bytes);
post.setEntity(outgoing);
context.setAttribute("REQ-COUNT", Integer.valueOf(i + 1));
}
return post;
}
public void handleResponse(final HttpResponse response, final HttpContext context) {
NHttpConnection conn = (NHttpConnection) context.getAttribute(
ExecutionContext.HTTP_CONNECTION);
ByteSequence list = (ByteSequence) context.getAttribute("LIST");
int i = ((Integer) context.getAttribute("RES-COUNT")).intValue();
i++;
context.setAttribute("RES-COUNT", Integer.valueOf(i));
try {
HttpEntity entity = response.getEntity();
byte[] data = EntityUtils.toByteArray(entity);
list.addBytes(data);
requestCount.decrement();
} catch (IOException ex) {
requestCount.abort();
}
if (i < reqNo) {
conn.requestInput();
}
}
};
NHttpServiceHandler serviceHandler = createHttpServiceHandler(
requestHandler,
null,
new SimpleEventListener());
NHttpClientHandler clientHandler = createHttpClientHandler(
requestExecutionHandler,
new SimpleEventListener());
this.server.setRequestCount(requestCount);
this.client.setRequestCount(requestCount);
this.server.start(serviceHandler);
this.client.start(clientHandler);
ListenerEndpoint endpoint = this.server.getListenerEndpoint();
endpoint.waitFor();
InetSocketAddress serverAddress = (InetSocketAddress) endpoint.getAddress();
for (int i = 0; i < responseData.size(); i++) {
this.client.openConnection(
new InetSocketAddress("localhost", serverAddress.getPort()),
responseData.get(i));
}
requestCount.await(10000);
assertEquals(0, requestCount.getValue());
this.client.shutdown();
this.server.shutdown();
for (int c = 0; c < responseData.size(); c++) {
ByteSequence receivedPackets = responseData.get(c);
ByteSequence expectedPackets = requestData;
assertEquals(expectedPackets.size(), receivedPackets.size());
for (int p = 0; p < requestData.size(); p++) {
byte[] expected = requestData.getBytes(p);
byte[] received = receivedPackets.getBytes(p);
assertEquals(expected.length, received.length);
for (int i = 0; i < expected.length; i++) {
assertEquals(expected[i], received[i]);
}
}
}
}
/**
* This test case executes a series of simple (non-pipelined) POST requests
* with chunk coded content content over multiple connections.
*/
public void testSimpleBasicHttpEntityEnclosingRequestsChunked() throws Exception {
final int connNo = 3;
final int reqNo = 20;
final RequestCount requestCount = new RequestCount(connNo * reqNo);
final ByteSequence requestData = new ByteSequence();
requestData.rnd(reqNo);
List<ByteSequence> responseData = new ArrayList<ByteSequence>(connNo);
for (int i = 0; i < connNo; i++) {
responseData.add(new ByteSequence());
}
HttpRequestHandler requestHandler = new HttpRequestHandler() {
public void handle(
final HttpRequest request,
final HttpResponse response,
final HttpContext context) throws HttpException, IOException {
if (request instanceof HttpEntityEnclosingRequest) {
HttpEntity incoming = ((HttpEntityEnclosingRequest) request).getEntity();
byte[] data = EntityUtils.toByteArray(incoming);
NByteArrayEntity outgoing = new NByteArrayEntity(data);
outgoing.setChunked(true);
response.setEntity(outgoing);
} else {
NStringEntity outgoing = new NStringEntity("No content");
response.setEntity(outgoing);
}
}
};
HttpRequestExecutionHandler requestExecutionHandler = new HttpRequestExecutionHandler() {
public void initalizeContext(final HttpContext context, final Object attachment) {
context.setAttribute("LIST", attachment);
context.setAttribute("REQ-COUNT", Integer.valueOf(0));
context.setAttribute("RES-COUNT", Integer.valueOf(0));
}
public void finalizeContext(final HttpContext context) {
}
public HttpRequest submitRequest(final HttpContext context) {
int i = ((Integer) context.getAttribute("REQ-COUNT")).intValue();
BasicHttpEntityEnclosingRequest post = null;
if (i < reqNo) {
post = new BasicHttpEntityEnclosingRequest("POST", "/?" + i);
byte[] bytes = requestData.getBytes(i);
NByteArrayEntity outgoing = new NByteArrayEntity(bytes);
outgoing.setChunked(true);
post.setEntity(outgoing);
context.setAttribute("REQ-COUNT", Integer.valueOf(i + 1));
}
return post;
}
public void handleResponse(final HttpResponse response, final HttpContext context) {
NHttpConnection conn = (NHttpConnection) context.getAttribute(
ExecutionContext.HTTP_CONNECTION);
ByteSequence list = (ByteSequence) context.getAttribute("LIST");
int i = ((Integer) context.getAttribute("RES-COUNT")).intValue();
i++;
context.setAttribute("RES-COUNT", Integer.valueOf(i));
try {
HttpEntity entity = response.getEntity();
byte[] data = EntityUtils.toByteArray(entity);
list.addBytes(data);
requestCount.decrement();
} catch (IOException ex) {
requestCount.abort();
}
if (i < reqNo) {
conn.requestInput();
}
}
};
SimpleEventListener serverEventListener = new SimpleEventListener();
SimpleEventListener clientEventListener = new SimpleEventListener();
NHttpServiceHandler serviceHandler = createHttpServiceHandler(
requestHandler,
null,
serverEventListener);
NHttpClientHandler clientHandler = createHttpClientHandler(
requestExecutionHandler,
clientEventListener);
this.server.setRequestCount(requestCount);
this.client.setRequestCount(requestCount);
this.server.start(serviceHandler);
this.client.start(clientHandler);
ListenerEndpoint endpoint = this.server.getListenerEndpoint();
endpoint.waitFor();
InetSocketAddress serverAddress = (InetSocketAddress) endpoint.getAddress();
for (int i = 0; i < responseData.size(); i++) {
this.client.openConnection(
new InetSocketAddress("localhost", serverAddress.getPort()),
responseData.get(i));
}
requestCount.await(10000);
assertEquals(0, requestCount.getValue());
this.client.shutdown();
this.server.shutdown();
for (int c = 0; c < responseData.size(); c++) {
ByteSequence receivedPackets = responseData.get(c);
ByteSequence expectedPackets = requestData;
assertEquals(expectedPackets.size(), receivedPackets.size());
for (int p = 0; p < requestData.size(); p++) {
byte[] expected = requestData.getBytes(p);
byte[] received = receivedPackets.getBytes(p);
assertEquals(expected.length, received.length);
for (int i = 0; i < expected.length; i++) {
assertEquals(expected[i], received[i]);
}
}
}
}
/**
* This test case executes a series of simple (non-pipelined) HTTP/1.0
* POST requests over multiple persistent connections.
*/
public void testSimpleBasicHttpEntityEnclosingRequestsHTTP10() throws Exception {
final int connNo = 3;
final int reqNo = 20;
final RequestCount requestCount = new RequestCount(connNo * reqNo);
final ByteSequence requestData = new ByteSequence();
requestData.rnd(reqNo);
List<ByteSequence> responseData = new ArrayList<ByteSequence>(connNo);
for (int i = 0; i < connNo; i++) {
responseData.add(new ByteSequence());
}
HttpRequestHandler requestHandler = new HttpRequestHandler() {
public void handle(
final HttpRequest request,
final HttpResponse response,
final HttpContext context) throws HttpException, IOException {
if (request instanceof HttpEntityEnclosingRequest) {
HttpEntity incoming = ((HttpEntityEnclosingRequest) request).getEntity();
byte[] data = EntityUtils.toByteArray(incoming);
NByteArrayEntity outgoing = new NByteArrayEntity(data);
outgoing.setChunked(false);
response.setEntity(outgoing);
} else {
NStringEntity outgoing = new NStringEntity("No content");
response.setEntity(outgoing);
}
}
};
// Set protocol level to HTTP/1.0
this.client.getParams().setParameter(
CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_0);
HttpRequestExecutionHandler requestExecutionHandler = new HttpRequestExecutionHandler() {
public void initalizeContext(final HttpContext context, final Object attachment) {
context.setAttribute("LIST", attachment);
context.setAttribute("REQ-COUNT", Integer.valueOf(0));
context.setAttribute("RES-COUNT", Integer.valueOf(0));
}
public void finalizeContext(final HttpContext context) {
}
public HttpRequest submitRequest(final HttpContext context) {
int i = ((Integer) context.getAttribute("REQ-COUNT")).intValue();
BasicHttpEntityEnclosingRequest post = null;
if (i < reqNo) {
post = new BasicHttpEntityEnclosingRequest("POST", "/?" + i);
byte[] bytes = requestData.getBytes(i);
NByteArrayEntity outgoing = new NByteArrayEntity(bytes);
post.setEntity(outgoing);
context.setAttribute("REQ-COUNT", Integer.valueOf(i + 1));
}
return post;
}
public void handleResponse(final HttpResponse response, final HttpContext context) {
NHttpConnection conn = (NHttpConnection) context.getAttribute(
ExecutionContext.HTTP_CONNECTION);
ByteSequence list = (ByteSequence) context.getAttribute("LIST");
int i = ((Integer) context.getAttribute("RES-COUNT")).intValue();
i++;
context.setAttribute("RES-COUNT", Integer.valueOf(i));
try {
HttpEntity entity = response.getEntity();
byte[] data = EntityUtils.toByteArray(entity);
list.addBytes(data);
requestCount.decrement();
} catch (IOException ex) {
requestCount.abort();
}
if (i < reqNo) {
conn.requestInput();
}
}
};
SimpleEventListener serverEventListener = new SimpleEventListener();
SimpleEventListener clientEventListener = new SimpleEventListener();
NHttpServiceHandler serviceHandler = createHttpServiceHandler(
requestHandler,
null,
serverEventListener);
NHttpClientHandler clientHandler = createHttpClientHandler(
requestExecutionHandler,
clientEventListener);
this.server.setRequestCount(requestCount);
this.client.setRequestCount(requestCount);
this.server.start(serviceHandler);
this.client.start(clientHandler);
ListenerEndpoint endpoint = this.server.getListenerEndpoint();
endpoint.waitFor();
InetSocketAddress serverAddress = (InetSocketAddress) endpoint.getAddress();
for (int i = 0; i < responseData.size(); i++) {
this.client.openConnection(
new InetSocketAddress("localhost", serverAddress.getPort()),
responseData.get(i));
}
requestCount.await(10000);
assertEquals(0, requestCount.getValue());
this.client.shutdown();
this.server.shutdown();
for (int c = 0; c < responseData.size(); c++) {
ByteSequence receivedPackets = responseData.get(c);
ByteSequence expectedPackets = requestData;
assertEquals(expectedPackets.size(), receivedPackets.size());
for (int p = 0; p < requestData.size(); p++) {
byte[] expected = requestData.getBytes(p);
byte[] received = receivedPackets.getBytes(p);
assertEquals(expected.length, received.length);
for (int i = 0; i < expected.length; i++) {
assertEquals(expected[i], received[i]);
}
}
}
}
/**
* This test case executes a series of simple (non-pipelined) POST requests
* with chunk coded content over multiple connections using
* {@link NHttpEntityWrapper}.
*/
public void testSimpleBasicHttpEntityEnclosingRequestsChunkedWithWrapper() throws Exception {
final int connNo = 1;
final int reqNo = 2;
final RequestCount requestCount = new RequestCount(connNo * reqNo);
final ByteSequence requestData = new ByteSequence();
requestData.rnd(reqNo);
List<ByteSequence> responseData = new ArrayList<ByteSequence>(connNo);
for (int i = 0; i < connNo; i++) {
responseData.add(new ByteSequence());
}
HttpRequestHandler requestHandler = new HttpRequestHandler() {
public void handle(
final HttpRequest request,
final HttpResponse response,
final HttpContext context) throws HttpException, IOException {
if (request instanceof HttpEntityEnclosingRequest) {
HttpEntity incoming = ((HttpEntityEnclosingRequest) request).getEntity();
byte[] data = EntityUtils.toByteArray(incoming);
ByteArrayEntity outgoing = new ByteArrayEntity(data);
outgoing.setChunked(true);
response.setEntity(new NHttpEntityWrapper(outgoing));
} else {
StringEntity outgoing = new StringEntity("No content");
response.setEntity(new NHttpEntityWrapper(outgoing));
}
}
};
HttpRequestExecutionHandler requestExecutionHandler = new HttpRequestExecutionHandler() {
public void initalizeContext(final HttpContext context, final Object attachment) {
context.setAttribute("LIST", attachment);
context.setAttribute("REQ-COUNT", Integer.valueOf(0));
context.setAttribute("RES-COUNT", Integer.valueOf(0));
}
public void finalizeContext(final HttpContext context) {
}
public HttpRequest submitRequest(final HttpContext context) {
int i = ((Integer) context.getAttribute("REQ-COUNT")).intValue();
BasicHttpEntityEnclosingRequest post = null;
if (i < reqNo) {
post = new BasicHttpEntityEnclosingRequest("POST", "/?" + i);
byte[] bytes = requestData.getBytes(i);
ByteArrayEntity outgoing = new ByteArrayEntity(bytes);
outgoing.setChunked(true);
post.setEntity(outgoing);
context.setAttribute("REQ-COUNT", Integer.valueOf(i + 1));
}
return post;
}
public void handleResponse(final HttpResponse response, final HttpContext context) {
NHttpConnection conn = (NHttpConnection) context.getAttribute(
ExecutionContext.HTTP_CONNECTION);
ByteSequence list = (ByteSequence) context.getAttribute("LIST");
int i = ((Integer) context.getAttribute("RES-COUNT")).intValue();
i++;
context.setAttribute("RES-COUNT", Integer.valueOf(i));
try {
HttpEntity entity = response.getEntity();
byte[] data = EntityUtils.toByteArray(entity);
list.addBytes(data);
requestCount.decrement();
} catch (IOException ex) {
requestCount.abort();
}
if (i < reqNo) {
conn.requestInput();
}
}
};
SimpleEventListener serverEventListener = new SimpleEventListener();
SimpleEventListener clientEventListener = new SimpleEventListener();
NHttpServiceHandler serviceHandler = createHttpServiceHandler(
requestHandler,
null,
serverEventListener);
NHttpClientHandler clientHandler = createHttpClientHandler(
requestExecutionHandler,
clientEventListener);
this.server.setRequestCount(requestCount);
this.client.setRequestCount(requestCount);
this.server.start(serviceHandler);
this.client.start(clientHandler);
ListenerEndpoint endpoint = this.server.getListenerEndpoint();
endpoint.waitFor();
InetSocketAddress serverAddress = (InetSocketAddress) endpoint.getAddress();
for (int i = 0; i < responseData.size(); i++) {
this.client.openConnection(
new InetSocketAddress("localhost", serverAddress.getPort()),
responseData.get(i));
}
requestCount.await(10000);
assertEquals(0, requestCount.getValue());
this.client.shutdown();
this.server.shutdown();
for (int c = 0; c < responseData.size(); c++) {
ByteSequence receivedPackets = responseData.get(c);
ByteSequence expectedPackets = requestData;
assertEquals(expectedPackets.size(), receivedPackets.size());
for (int p = 0; p < requestData.size(); p++) {
byte[] expected = requestData.getBytes(p);
byte[] received = receivedPackets.getBytes(p);
assertEquals(expected.length, received.length);
for (int i = 0; i < expected.length; i++) {
assertEquals(expected[i], received[i]);
}
}
}
}
}