501662a77f
Motivation: At the moment we use a ByteBuf as the payload for a http2 frame. This complicates life-time management a lot with no real gain and also may produce more objects then needed. We should just use a long as it is required to be 8 bytes anyway. Modifications: Use long for ping payloads. Result: Fixes [#7629].
166 lines
6.3 KiB
Java
166 lines
6.3 KiB
Java
/*
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* Copyright 2017 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License, version 2.0 (the
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* "License"); you may not use this file except in compliance with the License. You may obtain a
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* 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 distributed under the License
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* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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* or implied. See the License for the specific language governing permissions and limitations under
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* the License.
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*/
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package io.netty.testsuite.http2;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.ByteBufUtil;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.handler.codec.http.FullHttpRequest;
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import io.netty.handler.codec.http.HttpHeaderNames;
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import io.netty.handler.codec.http.HttpMethod;
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import io.netty.handler.codec.http.HttpScheme;
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import io.netty.handler.codec.http.HttpServerUpgradeHandler;
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import io.netty.handler.codec.http2.DefaultHttp2Headers;
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import io.netty.handler.codec.http2.Http2ConnectionDecoder;
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import io.netty.handler.codec.http2.Http2ConnectionEncoder;
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import io.netty.handler.codec.http2.Http2ConnectionHandler;
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import io.netty.handler.codec.http2.Http2Flags;
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import io.netty.handler.codec.http2.Http2FrameListener;
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import io.netty.handler.codec.http2.Http2Headers;
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import io.netty.handler.codec.http2.Http2Settings;
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import io.netty.util.CharsetUtil;
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import static io.netty.buffer.Unpooled.copiedBuffer;
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import static io.netty.buffer.Unpooled.unreleasableBuffer;
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import static io.netty.handler.codec.http.HttpResponseStatus.OK;
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/**
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* A simple handler that responds with the message "Hello World!".
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*/
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public final class HelloWorldHttp2Handler extends Http2ConnectionHandler implements Http2FrameListener {
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static final ByteBuf RESPONSE_BYTES = unreleasableBuffer(copiedBuffer("Hello World", CharsetUtil.UTF_8));
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HelloWorldHttp2Handler(Http2ConnectionDecoder decoder, Http2ConnectionEncoder encoder,
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Http2Settings initialSettings) {
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super(decoder, encoder, initialSettings);
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}
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private static Http2Headers http1HeadersToHttp2Headers(FullHttpRequest request) {
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CharSequence host = request.headers().get(HttpHeaderNames.HOST);
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Http2Headers http2Headers = new DefaultHttp2Headers()
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.method(HttpMethod.GET.asciiName())
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.path(request.uri())
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.scheme(HttpScheme.HTTP.name());
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if (host != null) {
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http2Headers.authority(host);
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}
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return http2Headers;
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}
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/**
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* Handles the cleartext HTTP upgrade event. If an upgrade occurred, sends a simple response via HTTP/2
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* on stream 1 (the stream specifically reserved for cleartext HTTP upgrade).
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*/
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@Override
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public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
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if (evt instanceof HttpServerUpgradeHandler.UpgradeEvent) {
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HttpServerUpgradeHandler.UpgradeEvent upgradeEvent =
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(HttpServerUpgradeHandler.UpgradeEvent) evt;
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onHeadersRead(ctx, 1, http1HeadersToHttp2Headers(upgradeEvent.upgradeRequest()), 0 , true);
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}
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super.userEventTriggered(ctx, evt);
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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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super.exceptionCaught(ctx, cause);
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cause.printStackTrace();
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ctx.close();
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}
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/**
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* Sends a "Hello World" DATA frame to the client.
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*/
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private void sendResponse(ChannelHandlerContext ctx, int streamId, ByteBuf payload) {
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// Send a frame for the response status
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Http2Headers headers = new DefaultHttp2Headers().status(OK.codeAsText());
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encoder().writeHeaders(ctx, streamId, headers, 0, false, ctx.newPromise());
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encoder().writeData(ctx, streamId, payload, 0, true, ctx.newPromise());
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// no need to call flush as channelReadComplete(...) will take care of it.
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}
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@Override
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public int onDataRead(ChannelHandlerContext ctx, int streamId, ByteBuf data, int padding, boolean endOfStream) {
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int processed = data.readableBytes() + padding;
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if (endOfStream) {
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sendResponse(ctx, streamId, data.retain());
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}
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return processed;
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}
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@Override
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public void onHeadersRead(ChannelHandlerContext ctx, int streamId,
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Http2Headers headers, int padding, boolean endOfStream) {
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if (endOfStream) {
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ByteBuf content = ctx.alloc().buffer();
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content.writeBytes(RESPONSE_BYTES.duplicate());
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ByteBufUtil.writeAscii(content, " - via HTTP/2");
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sendResponse(ctx, streamId, content);
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}
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}
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@Override
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public void onHeadersRead(ChannelHandlerContext ctx, int streamId, Http2Headers headers, int streamDependency,
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short weight, boolean exclusive, int padding, boolean endOfStream) {
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onHeadersRead(ctx, streamId, headers, padding, endOfStream);
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}
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@Override
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public void onPriorityRead(ChannelHandlerContext ctx, int streamId, int streamDependency,
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short weight, boolean exclusive) {
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}
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@Override
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public void onRstStreamRead(ChannelHandlerContext ctx, int streamId, long errorCode) {
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}
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@Override
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public void onSettingsAckRead(ChannelHandlerContext ctx) {
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}
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@Override
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public void onSettingsRead(ChannelHandlerContext ctx, Http2Settings settings) {
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}
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@Override
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public void onPingRead(ChannelHandlerContext ctx, long data) {
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}
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@Override
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public void onPingAckRead(ChannelHandlerContext ctx, long data) {
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}
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@Override
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public void onPushPromiseRead(ChannelHandlerContext ctx, int streamId, int promisedStreamId,
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Http2Headers headers, int padding) {
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}
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@Override
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public void onGoAwayRead(ChannelHandlerContext ctx, int lastStreamId, long errorCode, ByteBuf debugData) {
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}
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@Override
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public void onWindowUpdateRead(ChannelHandlerContext ctx, int streamId, int windowSizeIncrement) {
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}
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@Override
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public void onUnknownFrame(ChannelHandlerContext ctx, byte frameType, int streamId,
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Http2Flags flags, ByteBuf payload) {
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}
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}
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