b57d9f307f
- write() now accepts a ChannelPromise and returns ChannelFuture as most users expected. It makes the user's life much easier because it is now much easier to get notified when a specific message has been written. - flush() does not create a ChannelPromise nor returns ChannelFuture. It is now similar to what read() looks like.
70 lines
2.7 KiB
Java
70 lines
2.7 KiB
Java
/*
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* Copyright 2013 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.example.http.helloworld;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.Unpooled;
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import io.netty.channel.ChannelFutureListener;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.ChannelInboundHandlerAdapter;
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import io.netty.handler.codec.http.DefaultFullHttpResponse;
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import io.netty.handler.codec.http.FullHttpResponse;
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import io.netty.handler.codec.http.HttpRequest;
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import io.netty.util.CharsetUtil;
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import static io.netty.handler.codec.http.HttpHeaders.Names.*;
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import static io.netty.handler.codec.http.HttpHeaders.*;
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import static io.netty.handler.codec.http.HttpResponseStatus.*;
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import static io.netty.handler.codec.http.HttpVersion.*;
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public class HttpHelloWorldServerHandler extends ChannelInboundHandlerAdapter {
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private static final ByteBuf CONTENT =
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Unpooled.unreleasableBuffer(Unpooled.copiedBuffer("Hello World", CharsetUtil.US_ASCII));
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@Override
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public void channelReadComplete(ChannelHandlerContext ctx) {
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ctx.flush();
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}
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@Override
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public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
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if (msg instanceof HttpRequest) {
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HttpRequest req = (HttpRequest) msg;
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if (is100ContinueExpected(req)) {
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ctx.write(new DefaultFullHttpResponse(HTTP_1_1, CONTINUE));
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}
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boolean keepAlive = isKeepAlive(req);
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FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK, CONTENT.duplicate());
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response.headers().set(CONTENT_TYPE, "text/plain");
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response.headers().set(CONTENT_LENGTH, response.content().readableBytes());
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if (!keepAlive) {
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ctx.write(response).addListener(ChannelFutureListener.CLOSE);
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} else {
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response.headers().set(CONNECTION, Values.KEEP_ALIVE);
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ctx.write(response);
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}
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}
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
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cause.printStackTrace();
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ctx.close();
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}
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}
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