Javadoc
This commit is contained in:
Trustin Lee
parent
44c7818ae8
commit
6058cf3981
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@ -26,6 +26,7 @@ import java.util.List;
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import org.jboss.netty.buffer.ChannelBuffer;
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import org.jboss.netty.buffer.ChannelBuffers;
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import org.jboss.netty.channel.ChannelHandler;
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import org.jboss.netty.channel.ChannelHandlerContext;
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import org.jboss.netty.channel.ChannelPipelineCoverage;
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import org.jboss.netty.channel.Channels;
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@ -34,6 +35,11 @@ import org.jboss.netty.channel.SimpleChannelUpstreamHandler;
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import org.jboss.netty.handler.codec.frame.TooLongFrameException;
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/**
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* A {@link ChannelHandler} that aggregates an {@link HttpMessage}
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* and its following {@link HttpChunk}s into an {@link HttpMessage} with no
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* following {@link HttpChunk}s. It is useful when you don't want to take
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* care of HTTP messages whose transfer encoding is 'chunked'.
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*
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* @author The Netty Project (netty-dev@lists.jboss.org)
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* @author Trustin Lee (tlee@redhat.com)
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* @version $Rev$, $Date$
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@ -44,6 +50,14 @@ public class HttpChunkAggregator extends SimpleChannelUpstreamHandler {
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private final int maxContentLength;
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private volatile HttpMessage currentMessage;
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/**
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* Creates a new instance.
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*
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* @param maxContentLength
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* the maximum length of the aggregated content.
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* If the length of the aggregated content exceeds this value,
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* a {@link TooLongFrameException} will be raised.
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*/
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public HttpChunkAggregator(int maxContentLength) {
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if (maxContentLength <= 0) {
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throw new IllegalArgumentException(
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@ -27,11 +27,52 @@ import org.jboss.netty.buffer.ChannelBuffer;
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import org.jboss.netty.buffer.ChannelBuffers;
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import org.jboss.netty.channel.Channel;
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import org.jboss.netty.channel.ChannelHandlerContext;
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import org.jboss.netty.channel.ChannelPipeline;
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import org.jboss.netty.handler.codec.frame.TooLongFrameException;
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import org.jboss.netty.handler.codec.replay.ReplayingDecoder;
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/**
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* Decodes an Http type message.
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* Decodes {@link ChannelBuffer}s into {@link HttpMessage}s and
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* {@link HttpChunk}s.
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*
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* <h3>Parameters that prevents excessive memory consumption</h3>
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* <table>
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* <tr>
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* <th>Name</th><th>Meaning</th>
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* </tr>
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* <tr>
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* <td>{@code maxInitialLineLength}</td>
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* <td>The maximum length of the initial line
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* (e.g. {@code "GET / HTTP/1.0"} or {@code "HTTP/1.0 200 OK"})
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* If the length of the initial line exceeds this value, a
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* {@link TooLongFrameException} will be raised.</td>
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* </tr>
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* <tr>
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* <td>{@code maxHeaderSize}</td>
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* <td>The maximum length of all headers. If the sum of the length of each
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* header exceeds this value, a {@link TooLongFrameException} will be raised.</td>
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* </tr>
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* <tr>
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* <td>{@code maxChunkSize}</td>
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* <td>The maximum length of the content or each chunk. If the content length
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* exceeds this value, the transfer encoding of the decoded message will be
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* converted to 'chunked' and the content will be split into multiple
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* {@link HttpChunk}s. If the transfer encoding of the HTTP message is
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* 'chunked' already, each chunk will be split into smaller chunks if the
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* length of the chunk exceeds this value. If you prefer not to handle
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* {@link HttpChunk}s in your handler, insert {@link HttpChunkAggregator}
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* after this decoder in the {@link ChannelPipeline}.</td>
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* </tr>
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* </table>
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*
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* <h3>Extensibility</h3>
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*
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* Please note that this decoder is designed to be extended to implement
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* a protocol derived from HTTP, such as
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* <a href="http://en.wikipedia.org/wiki/Real_Time_Streaming_Protocol">RTSP</a> and
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* <a href="http://en.wikipedia.org/wiki/Internet_Content_Adaptation_Protocol">ICAP</a>.
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* To implement the decoder of such a derived protocol, extend this class and
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* implement all abstract methods properly.
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*
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* @author The Netty Project (netty-dev@lists.jboss.org)
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* @author Andy Taylor (andy.taylor@jboss.org)
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@ -49,6 +90,9 @@ public abstract class HttpMessageDecoder extends ReplayingDecoder<HttpMessageDec
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private int headerSize;
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/**
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* The internal state of {@link HttpMessageDecoder}.
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* <em>Internal use only</em>.
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*
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* @author The Netty Project (netty-dev@lists.jboss.org)
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* @author Trustin Lee (tlee@redhat.com)
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* @version $Rev$, $Date$
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@ -70,10 +114,18 @@ public abstract class HttpMessageDecoder extends ReplayingDecoder<HttpMessageDec
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READ_CHUNK_FOOTER;
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}
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/**
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* Creates a new instance with the default
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* {@code maxInitialLineLength (4096}}, {@code maxHeaderSize (4096)}, and
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* {@code maxChunkSize (4096)}.
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*/
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protected HttpMessageDecoder() {
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this(4096, 8192, 8192);
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}
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/**
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* Creates a new instance with the specified parameters.
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*/
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protected HttpMessageDecoder(
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int maxInitialLineLength, int maxHeaderSize, int maxChunkSize) {
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@ -36,7 +36,17 @@ import org.jboss.netty.channel.ChannelPipelineCoverage;
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import org.jboss.netty.handler.codec.oneone.OneToOneEncoder;
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/**
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* encodes an http message
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* Encodes an {@link HttpMessage} or an {@link HttpChunk} into
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* a {@link ChannelBuffer}.
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*
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* <h3>Extensibility</h3>
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*
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* Please note that this encoder is designed to be extended to implement
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* a protocol derived from HTTP, such as
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* <a href="http://en.wikipedia.org/wiki/Real_Time_Streaming_Protocol">RTSP</a> and
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* <a href="http://en.wikipedia.org/wiki/Internet_Content_Adaptation_Protocol">ICAP</a>.
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* To implement the encoder of such a derived protocol, extend this class and
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* implement all abstract methods properly.
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*
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* @author The Netty Project (netty-dev@lists.jboss.org)
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* @author Andy Taylor (andy.taylor@jboss.org)
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@ -48,6 +58,13 @@ public abstract class HttpMessageEncoder extends OneToOneEncoder {
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private static final ChannelBuffer LAST_CHUNK = copiedBuffer("0\r\n\r\n", "ASCII");
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/**
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* Creates a new instance.
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*/
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protected HttpMessageEncoder() {
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super();
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}
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@Override
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protected Object encode(ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception {
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if (msg instanceof HttpMessage) {
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@ -86,15 +103,7 @@ public abstract class HttpMessageEncoder extends OneToOneEncoder {
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return msg;
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}
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/**
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* writes the headers
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* Header1: value1
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* Header2: value2
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*
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* @param buf
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* @param message
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*/
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public void encodeHeaders(ChannelBuffer buf, HttpMessage message) {
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private void encodeHeaders(ChannelBuffer buf, HttpMessage message) {
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Set<String> headers = message.getHeaderNames();
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try {
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for (String header : headers) {
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@ -21,9 +21,42 @@
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*/
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package org.jboss.netty.handler.codec.http;
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import org.jboss.netty.buffer.ChannelBuffer;
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import org.jboss.netty.channel.ChannelPipeline;
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import org.jboss.netty.handler.codec.frame.TooLongFrameException;
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/**
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* decodes an http request.
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* Decodes {@link ChannelBuffer}s into {@link HttpRequest}s and {@link HttpChunk}s.
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*
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* <h3>Parameters that prevents excessive memory consumption</h3>
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* <table>
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* <tr>
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* <th>Name</th><th>Meaning</th>
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* </tr>
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* <tr>
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* <td>{@code maxInitialLineLength}</td>
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* <td>The maximum length of the initial line (e.g. {@code "GET / HTTP/1.0"})
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* If the length of the initial line exceeds this value, a
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* {@link TooLongFrameException} will be raised.</td>
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* </tr>
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* <tr>
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* <td>{@code maxHeaderSize}</td>
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* <td>The maximum length of all headers. If the sum of the length of each
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* header exceeds this value, a {@link TooLongFrameException} will be raised.</td>
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* </tr>
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* <tr>
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* <td>{@code maxChunkSize}</td>
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* <td>The maximum length of the content or each chunk. If the content length
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* exceeds this value, the transfer encoding of the decoded request will be
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* converted to 'chunked' and the content will be split into multiple
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* {@link HttpChunk}s. If the transfer encoding of the HTTP request is
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* 'chunked' already, each chunk will be split into smaller chunks if the
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* length of the chunk exceeds this value. If you prefer not to handle
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* {@link HttpChunk}s in your handler, insert {@link HttpChunkAggregator}
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* after this decoder in the {@link ChannelPipeline}.</td>
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* </tr>
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* </table>
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*
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* @author The Netty Project (netty-dev@lists.jboss.org)
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* @author Andy Taylor (andy.taylor@jboss.org)
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@ -32,10 +65,18 @@ package org.jboss.netty.handler.codec.http;
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*/
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public class HttpRequestDecoder extends HttpMessageDecoder {
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/**
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* Creates a new instance with the default
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* {@code maxInitialLineLength (4096}}, {@code maxHeaderSize (4096)}, and
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* {@code maxChunkSize (4096)}.
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*/
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public HttpRequestDecoder() {
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super();
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}
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/**
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* Creates a new instance with the specified parameters.
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*/
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public HttpRequestDecoder(
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int maxInitialLineLength, int maxHeaderSize, int maxChunkSize) {
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super(maxInitialLineLength, maxHeaderSize, maxChunkSize);
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@ -26,7 +26,8 @@ import static org.jboss.netty.handler.codec.http.HttpCodecUtil.*;
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import org.jboss.netty.buffer.ChannelBuffer;
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/**
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* encodes an http request
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* Encodes an {@link HttpRequest} or an {@link HttpChunk} into
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* a {@link ChannelBuffer}.
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*
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* @author The Netty Project (netty-dev@lists.jboss.org)
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* @author Andy Taylor (andy.taylor@jboss.org)
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@ -34,9 +35,14 @@ import org.jboss.netty.buffer.ChannelBuffer;
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* @version $Rev$, $Date$
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*/
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public class HttpRequestEncoder extends HttpMessageEncoder {
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/**
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* writes the initial line i.e. 'GET /path/to/file/index.html HTTP/1.0'
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* Creates a new instance.
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*/
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public HttpRequestEncoder() {
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super();
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}
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@Override
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protected void encodeInitialLine(ChannelBuffer buf, HttpMessage message) throws Exception {
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HttpRequest request = (HttpRequest) message;
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@ -21,9 +21,43 @@
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*/
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package org.jboss.netty.handler.codec.http;
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import org.jboss.netty.buffer.ChannelBuffer;
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import org.jboss.netty.channel.ChannelPipeline;
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import org.jboss.netty.handler.codec.frame.TooLongFrameException;
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/**
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* an http response decoder
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* Decodes {@link ChannelBuffer}s into {@link HttpResponse}s and
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* {@link HttpChunk}s.
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*
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* <h3>Parameters that prevents excessive memory consumption</h3>
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* <table>
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* <tr>
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* <th>Name</th><th>Meaning</th>
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* </tr>
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* <tr>
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* <td>{@code maxInitialLineLength}</td>
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* <td>The maximum length of the initial line (e.g. {@code "HTTP/1.0 200 OK"})
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* If the length of the initial line exceeds this value, a
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* {@link TooLongFrameException} will be raised.</td>
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* </tr>
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* <tr>
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* <td>{@code maxHeaderSize}</td>
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* <td>The maximum length of all headers. If the sum of the length of each
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* header exceeds this value, a {@link TooLongFrameException} will be raised.</td>
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* </tr>
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* <tr>
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* <td>{@code maxChunkSize}</td>
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* <td>The maximum length of the content or each chunk. If the content length
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* exceeds this value, the transfer encoding of the decoded response will be
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* converted to 'chunked' and the content will be split into multiple
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* {@link HttpChunk}s. If the transfer encoding of the HTTP response is
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* 'chunked' already, each chunk will be split into smaller chunks if the
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* length of the chunk exceeds this value. If you prefer not to handle
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* {@link HttpChunk}s in your handler, insert {@link HttpChunkAggregator}
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* after this decoder in the {@link ChannelPipeline}.</td>
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* </tr>
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* </table>
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*
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* @author The Netty Project (netty-dev@lists.jboss.org)
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* @author Andy Taylor (andy.taylor@jboss.org)
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@ -32,10 +66,18 @@ package org.jboss.netty.handler.codec.http;
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*/
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public class HttpResponseDecoder extends HttpMessageDecoder {
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/**
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* Creates a new instance with the default
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* {@code maxInitialLineLength (4096}}, {@code maxHeaderSize (4096)}, and
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* {@code maxChunkSize (4096)}.
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*/
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public HttpResponseDecoder() {
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super();
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}
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/**
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* Creates a new instance with the specified parameters.
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*/
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public HttpResponseDecoder(
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int maxInitialLineLength, int maxHeaderSize, int maxChunkSize) {
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super(maxInitialLineLength, maxHeaderSize, maxChunkSize);
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@ -28,7 +28,8 @@ import java.io.UnsupportedEncodingException;
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import org.jboss.netty.buffer.ChannelBuffer;
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/**
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* encodes an http response
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* Encodes an {@link HttpResponse} or an {@link HttpChunk} into
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* a {@link ChannelBuffer}.
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*
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* @author The Netty Project (netty-dev@lists.jboss.org)
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* @author Andy Taylor (andy.taylor@jboss.org)
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@ -37,6 +38,13 @@ import org.jboss.netty.buffer.ChannelBuffer;
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*/
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public class HttpResponseEncoder extends HttpMessageEncoder {
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/**
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* Creates a new instance.
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*/
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public HttpResponseEncoder() {
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super();
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}
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@Override
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protected void encodeInitialLine(ChannelBuffer buf, HttpMessage message) {
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HttpResponse response = (HttpResponse) message;
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@ -51,5 +59,4 @@ public class HttpResponseEncoder extends HttpMessageEncoder {
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throw (Error) new Error().initCause(e);
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}
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}
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}
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