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Java example source code file (Http2ServerDowngraderTest.java)

This example Java source code file (Http2ServerDowngraderTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

bytebuf, defaulthttp2headers, defaulthttp2headersframe, embeddedchannel, exception, fullhttprequest, get, http2dataframe, http2goawayframe, http2headersframe, http2serverdowngrader, httpheaders, lasthttpcontent, test

The Http2ServerDowngraderTest.java Java example source code

/*
 * Copyright 2016 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.http2;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.embedded.EmbeddedChannel;
import io.netty.handler.codec.http.DefaultFullHttpResponse;
import io.netty.handler.codec.http.DefaultHttpContent;
import io.netty.handler.codec.http.DefaultHttpResponse;
import io.netty.handler.codec.http.DefaultLastHttpContent;
import io.netty.handler.codec.http.FullHttpRequest;
import io.netty.handler.codec.http.FullHttpResponse;
import io.netty.handler.codec.http.HttpContent;
import io.netty.handler.codec.http.HttpHeaders;
import io.netty.handler.codec.http.HttpMethod;
import io.netty.handler.codec.http.HttpRequest;
import io.netty.handler.codec.http.HttpResponse;
import io.netty.handler.codec.http.HttpResponseStatus;
import io.netty.handler.codec.http.HttpVersion;
import io.netty.handler.codec.http.LastHttpContent;
import io.netty.util.CharsetUtil;

import org.junit.Test;

import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertFalse;

public class Http2ServerDowngraderTest {

    @Test
    public void testUpgradeEmptyFullResponse() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        assertTrue(ch.writeOutbound(new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK)));

        Http2HeadersFrame headersFrame = ch.readOutbound();
        assertThat(headersFrame.headers().status().toString(), is("200"));
        assertTrue(headersFrame.isEndStream());

        assertThat(ch.readOutbound(), is(nullValue()));
        assertFalse(ch.finish());
    }

    @Test
    public void testUpgradeNonEmptyFullResponse() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        ByteBuf hello = Unpooled.copiedBuffer("hello world", CharsetUtil.UTF_8);
        assertTrue(ch.writeOutbound(new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK, hello)));

        Http2HeadersFrame headersFrame = ch.readOutbound();
        assertThat(headersFrame.headers().status().toString(), is("200"));
        assertFalse(headersFrame.isEndStream());

        Http2DataFrame dataFrame = ch.readOutbound();
        try {
            assertThat(dataFrame.content().toString(CharsetUtil.UTF_8), is("hello world"));
            assertTrue(dataFrame.isEndStream());
        } finally {
            dataFrame.release();
        }

        assertThat(ch.readOutbound(), is(nullValue()));
        assertFalse(ch.finish());
    }

    @Test
    public void testUpgradeEmptyFullResponseWithTrailers() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
        HttpHeaders trailers = response.trailingHeaders();
        trailers.set("key", "value");
        assertTrue(ch.writeOutbound(response));

        Http2HeadersFrame headersFrame = ch.readOutbound();
        assertThat(headersFrame.headers().status().toString(), is("200"));
        assertFalse(headersFrame.isEndStream());

        Http2HeadersFrame trailersFrame = ch.readOutbound();
        assertThat(trailersFrame.headers().get("key").toString(), is("value"));
        assertTrue(trailersFrame.isEndStream());

        assertThat(ch.readOutbound(), is(nullValue()));
        assertFalse(ch.finish());
    }

    @Test
    public void testUpgradeNonEmptyFullResponseWithTrailers() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        ByteBuf hello = Unpooled.copiedBuffer("hello world", CharsetUtil.UTF_8);
        FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK, hello);
        HttpHeaders trailers = response.trailingHeaders();
        trailers.set("key", "value");
        assertTrue(ch.writeOutbound(response));

        Http2HeadersFrame headersFrame = ch.readOutbound();
        assertThat(headersFrame.headers().status().toString(), is("200"));
        assertFalse(headersFrame.isEndStream());

        Http2DataFrame dataFrame = ch.readOutbound();
        try {
            assertThat(dataFrame.content().toString(CharsetUtil.UTF_8), is("hello world"));
            assertFalse(dataFrame.isEndStream());
        } finally {
            dataFrame.release();
        }

        Http2HeadersFrame trailersFrame = ch.readOutbound();
        assertThat(trailersFrame.headers().get("key").toString(), is("value"));
        assertTrue(trailersFrame.isEndStream());

        assertThat(ch.readOutbound(), is(nullValue()));
        assertFalse(ch.finish());
    }

    @Test
    public void testUpgradeHeaders() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        HttpResponse response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
        assertTrue(ch.writeOutbound(response));

        Http2HeadersFrame headersFrame = ch.readOutbound();
        assertThat(headersFrame.headers().status().toString(), is("200"));
        assertFalse(headersFrame.isEndStream());

        assertThat(ch.readOutbound(), is(nullValue()));
        assertFalse(ch.finish());
    }

    @Test
    public void testUpgradeChunk() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        ByteBuf hello = Unpooled.copiedBuffer("hello world", CharsetUtil.UTF_8);
        HttpContent content = new DefaultHttpContent(hello);
        assertTrue(ch.writeOutbound(content));

        Http2DataFrame dataFrame = ch.readOutbound();
        try {
            assertThat(dataFrame.content().toString(CharsetUtil.UTF_8), is("hello world"));
            assertFalse(dataFrame.isEndStream());
        } finally {
            dataFrame.release();
        }

        assertThat(ch.readOutbound(), is(nullValue()));
        assertFalse(ch.finish());
    }

    @Test
    public void testUpgradeEmptyEnd() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        LastHttpContent end = LastHttpContent.EMPTY_LAST_CONTENT;
        assertTrue(ch.writeOutbound(end));

        Http2DataFrame emptyFrame = ch.readOutbound();
        try {
            assertThat(emptyFrame.content().readableBytes(), is(0));
            assertTrue(emptyFrame.isEndStream());
        } finally {
            emptyFrame.release();
        }

        assertThat(ch.readOutbound(), is(nullValue()));
        assertFalse(ch.finish());
    }

    @Test
    public void testUpgradeDataEnd() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        ByteBuf hello = Unpooled.copiedBuffer("hello world", CharsetUtil.UTF_8);
        LastHttpContent end = new DefaultLastHttpContent(hello, true);
        assertTrue(ch.writeOutbound(end));

        Http2DataFrame dataFrame = ch.readOutbound();
        try {
            assertThat(dataFrame.content().toString(CharsetUtil.UTF_8), is("hello world"));
            assertTrue(dataFrame.isEndStream());
        } finally {
            dataFrame.release();
        }

        assertThat(ch.readOutbound(), is(nullValue()));
        assertFalse(ch.finish());
    }

    @Test
    public void testUpgradeTrailers() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        LastHttpContent trailers = new DefaultLastHttpContent(Unpooled.EMPTY_BUFFER, true);
        HttpHeaders headers = trailers.trailingHeaders();
        headers.set("key", "value");
        assertTrue(ch.writeOutbound(trailers));

        Http2HeadersFrame headerFrame = ch.readOutbound();
        assertThat(headerFrame.headers().get("key").toString(), is("value"));
        assertTrue(headerFrame.isEndStream());

        assertThat(ch.readOutbound(), is(nullValue()));
        assertFalse(ch.finish());
    }

    @Test
    public void testUpgradeDataEndWithTrailers() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        ByteBuf hello = Unpooled.copiedBuffer("hello world", CharsetUtil.UTF_8);
        LastHttpContent trailers = new DefaultLastHttpContent(hello, true);
        HttpHeaders headers = trailers.trailingHeaders();
        headers.set("key", "value");
        assertTrue(ch.writeOutbound(trailers));

        Http2DataFrame dataFrame = ch.readOutbound();
        try {
            assertThat(dataFrame.content().toString(CharsetUtil.UTF_8), is("hello world"));
            assertFalse(dataFrame.isEndStream());
        } finally {
            dataFrame.release();
        }

        Http2HeadersFrame headerFrame = ch.readOutbound();
        assertThat(headerFrame.headers().get("key").toString(), is("value"));
        assertTrue(headerFrame.isEndStream());

        assertThat(ch.readOutbound(), is(nullValue()));
        assertFalse(ch.finish());
    }

    @Test
    public void testDowngradeHeaders() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        Http2Headers headers = new DefaultHttp2Headers();
        headers.path("/");
        headers.method("GET");

        assertTrue(ch.writeInbound(new DefaultHttp2HeadersFrame(headers)));

        HttpRequest request = ch.readInbound();
        assertThat(request.uri(), is("/"));
        assertThat(request.method(), is(HttpMethod.GET));
        assertThat(request.protocolVersion(), is(HttpVersion.HTTP_1_1));
        assertFalse(request instanceof FullHttpRequest);

        assertThat(ch.readInbound(), is(nullValue()));
        assertFalse(ch.finish());
    }

    @Test
    public void testDowngradeFullHeaders() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        Http2Headers headers = new DefaultHttp2Headers();
        headers.path("/");
        headers.method("GET");

        assertTrue(ch.writeInbound(new DefaultHttp2HeadersFrame(headers, true)));

        FullHttpRequest request = ch.readInbound();
        try {
            assertThat(request.uri(), is("/"));
            assertThat(request.method(), is(HttpMethod.GET));
            assertThat(request.protocolVersion(), is(HttpVersion.HTTP_1_1));
            assertThat(request.content().readableBytes(), is(0));
            assertTrue(request.trailingHeaders().isEmpty());
        } finally {
            request.release();
        }

        assertThat(ch.readInbound(), is(nullValue()));
        assertFalse(ch.finish());
    }

    @Test
    public void testDowngradeTrailers() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        Http2Headers headers = new DefaultHttp2Headers();
        headers.set("key", "value");
        assertTrue(ch.writeInbound(new DefaultHttp2HeadersFrame(headers, true)));

        LastHttpContent trailers = ch.readInbound();
        try {
            assertThat(trailers.content().readableBytes(), is(0));
            assertThat(trailers.trailingHeaders().get("key").toString(), is("value"));
            assertFalse(trailers instanceof FullHttpRequest);
        } finally {
            trailers.release();
        }

        assertThat(ch.readInbound(), is(nullValue()));
        assertFalse(ch.finish());
    }

    @Test
    public void testDowngradeData() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        ByteBuf hello = Unpooled.copiedBuffer("hello world", CharsetUtil.UTF_8);
        assertTrue(ch.writeInbound(new DefaultHttp2DataFrame(hello)));

        HttpContent content = ch.readInbound();
        try {
            assertThat(content.content().toString(CharsetUtil.UTF_8), is("hello world"));
            assertFalse(content instanceof LastHttpContent);
        } finally {
            content.release();
        }

        assertThat(ch.readInbound(), is(nullValue()));
        assertFalse(ch.finish());
    }

    @Test
    public void testDowngradeEndData() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        ByteBuf hello = Unpooled.copiedBuffer("hello world", CharsetUtil.UTF_8);
        assertTrue(ch.writeInbound(new DefaultHttp2DataFrame(hello, true)));

        LastHttpContent content = ch.readInbound();
        try {
            assertThat(content.content().toString(CharsetUtil.UTF_8), is("hello world"));
            assertTrue(content.trailingHeaders().isEmpty());
        } finally {
            content.release();
        }

        assertThat(ch.readInbound(), is(nullValue()));
        assertFalse(ch.finish());
    }

    @Test
    public void testPassThroughOther() throws Exception {
        EmbeddedChannel ch = new EmbeddedChannel(new Http2ServerDowngrader());
        Http2ResetFrame reset = new DefaultHttp2ResetFrame(0);
        Http2GoAwayFrame goaway = new DefaultHttp2GoAwayFrame(0);
        assertTrue(ch.writeInbound(reset));
        assertTrue(ch.writeInbound(goaway.retain()));

        assertEquals(reset, ch.readInbound());

        Http2GoAwayFrame frame = ch.readInbound();
        try {
            assertEquals(goaway, frame);
            assertThat(ch.readInbound(), is(nullValue()));
            assertFalse(ch.finish());
        } finally {
            goaway.release();
            frame.release();
        }
    }
}

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