/*
* Copyright 2014 The Netty Project
*
* The Netty Project 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 io.netty.handler.codec.http;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.FileRegion;
import io.netty.channel.embedded.EmbeddedChannel;
import io.netty.util.CharsetUtil;
import org.junit.Test;
import java.io.IOException;
import java.nio.channels.WritableByteChannel;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
public class HttpResponseEncoderTest {
private static final long INTEGER_OVERLFLOW = (long) Integer.MAX_VALUE + 1;
private static final FileRegion FILE_REGION = new DummyLongFileRegion();
@Test
public void testLargeFileRegionChunked() throws Exception {
EmbeddedChannel channel = new EmbeddedChannel(new HttpResponseEncoder());
HttpResponse response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
response.headers().set(HttpHeaderNames.TRANSFER_ENCODING, HttpHeaderValues.CHUNKED);
assertTrue(channel.writeOutbound(response));
ByteBuf buffer = channel.readOutbound();
assertEquals("HTTP/1.1 200 OK\r\n" + HttpHeaderNames.TRANSFER_ENCODING + ": " +
HttpHeaderValues.CHUNKED + "\r\n\r\n", buffer.toString(CharsetUtil.US_ASCII));
buffer.release();
assertTrue(channel.writeOutbound(FILE_REGION));
buffer = channel.readOutbound();
assertEquals("80000000\r\n", buffer.toString(CharsetUtil.US_ASCII));
buffer.release();
FileRegion region = channel.readOutbound();
assertSame(FILE_REGION, region);
region.release();
buffer = channel.readOutbound();
assertEquals("\r\n", buffer.toString(CharsetUtil.US_ASCII));
buffer.release();
assertTrue(channel.writeOutbound(LastHttpContent.EMPTY_LAST_CONTENT));
buffer = channel.readOutbound();
assertEquals("0\r\n\r\n", buffer.toString(CharsetUtil.US_ASCII));
buffer.release();
assertFalse(channel.finish());
}
private static class DummyLongFileRegion implements FileRegion {
@Override
public long position() {
return 0;
}
@Override
public long transfered() {
return 0;
}
@Override
public long count() {
return INTEGER_OVERLFLOW;
}
@Override
public long transferTo(WritableByteChannel target, long position) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public FileRegion touch(Object hint) {
return this;
}
@Override
public FileRegion touch() {
return this;
}
@Override
public FileRegion retain() {
return this;
}
@Override
public FileRegion retain(int increment) {
return this;
}
@Override
public int refCnt() {
return 1;
}
@Override
public boolean release() {
return false;
}
@Override
public boolean release(int decrement) {
return false;
}
}
@Test
public void testEmptyBufferBypass() throws Exception {
EmbeddedChannel channel = new EmbeddedChannel(new HttpResponseEncoder());
// Test writing an empty buffer works when the encoder is at ST_INIT.
channel.writeOutbound(Unpooled.EMPTY_BUFFER);
ByteBuf buffer = channel.readOutbound();
assertThat(buffer, is(sameInstance(Unpooled.EMPTY_BUFFER)));
// Leave the ST_INIT state.
HttpResponse response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
assertTrue(channel.writeOutbound(response));
buffer = channel.readOutbound();
assertEquals("HTTP/1.1 200 OK\r\n\r\n", buffer.toString(CharsetUtil.US_ASCII));
buffer.release();
// Test writing an empty buffer works when the encoder is not at ST_INIT.
channel.writeOutbound(Unpooled.EMPTY_BUFFER);
buffer = channel.readOutbound();
assertThat(buffer, is(sameInstance(Unpooled.EMPTY_BUFFER)));
assertFalse(channel.finish());
}
}