HttpClientCodec need to keep request / response pairs in sync all the… (#9721)
Motivation: At the moment we miss to poll the method queue when we see an Informational response code. This can lead to out-of-sync of request / response pairs when later try to compare these. Modifications: Always poll the queue correctly Result: Always compare the correct request / response pairs
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@ -222,6 +222,13 @@ public final class HttpClientCodec extends CombinedChannelDuplexHandler<HttpResp
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@Override
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@Override
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protected boolean isContentAlwaysEmpty(HttpMessage msg) {
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protected boolean isContentAlwaysEmpty(HttpMessage msg) {
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// Get the method of the HTTP request that corresponds to the
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// current response.
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//
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// Even if we do not use the method to compare we still need to poll it to ensure we keep
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// request / response pairs in sync.
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HttpMethod method = queue.poll();
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final int statusCode = ((HttpResponse) msg).status().code();
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final int statusCode = ((HttpResponse) msg).status().code();
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if (statusCode >= 100 && statusCode < 200) {
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if (statusCode >= 100 && statusCode < 200) {
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// An informational response should be excluded from paired comparison.
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// An informational response should be excluded from paired comparison.
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@ -229,10 +236,6 @@ public final class HttpClientCodec extends CombinedChannelDuplexHandler<HttpResp
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return super.isContentAlwaysEmpty(msg);
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return super.isContentAlwaysEmpty(msg);
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}
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}
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// Get the getMethod of the HTTP request that corresponds to the
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// current response.
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HttpMethod method = queue.poll();
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// If the remote peer did for example send multiple responses for one request (which is not allowed per
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// If the remote peer did for example send multiple responses for one request (which is not allowed per
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// spec but may still be possible) method will be null so guard against it.
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// spec but may still be possible) method will be null so guard against it.
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if (method != null) {
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if (method != null) {
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@ -36,6 +36,7 @@ import io.netty.handler.codec.CodecException;
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import io.netty.handler.codec.PrematureChannelClosureException;
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import io.netty.handler.codec.PrematureChannelClosureException;
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import io.netty.util.CharsetUtil;
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import io.netty.util.CharsetUtil;
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import io.netty.util.NetUtil;
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import io.netty.util.NetUtil;
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import org.hamcrest.CoreMatchers;
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import org.junit.Test;
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import org.junit.Test;
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import java.net.InetSocketAddress;
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import java.net.InetSocketAddress;
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@ -347,6 +348,48 @@ public class HttpClientCodecTest {
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assertThat(ch.finish(), is(false));
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assertThat(ch.finish(), is(false));
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}
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}
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@Test
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public void testInformationalResponseKeepsPairsInSync() {
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byte[] data = ("HTTP/1.1 102 Processing\r\n" +
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"Status-URI: Status-URI:http://status.com; 404\r\n" +
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"\r\n").getBytes();
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byte[] data2 = ("HTTP/1.1 200 OK\r\n" +
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"Content-Length: 8\r\n" +
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"\r\n" +
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"12345678").getBytes();
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EmbeddedChannel ch = new EmbeddedChannel(new HttpClientCodec());
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assertTrue(ch.writeOutbound(new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.HEAD, "/")));
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ByteBuf buffer = ch.readOutbound();
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buffer.release();
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assertNull(ch.readOutbound());
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assertTrue(ch.writeInbound(Unpooled.wrappedBuffer(data)));
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HttpResponse res = ch.readInbound();
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assertThat(res.protocolVersion(), sameInstance(HttpVersion.HTTP_1_1));
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assertThat(res.status(), is(HttpResponseStatus.PROCESSING));
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HttpContent content = ch.readInbound();
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// HTTP 102 is not allowed to have content.
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assertThat(content.content().readableBytes(), is(0));
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assertThat(content, CoreMatchers.<HttpContent>instanceOf(LastHttpContent.class));
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content.release();
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assertTrue(ch.writeOutbound(new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET, "/")));
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buffer = ch.readOutbound();
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buffer.release();
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assertNull(ch.readOutbound());
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assertTrue(ch.writeInbound(Unpooled.wrappedBuffer(data2)));
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res = ch.readInbound();
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assertThat(res.protocolVersion(), sameInstance(HttpVersion.HTTP_1_1));
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assertThat(res.status(), is(HttpResponseStatus.OK));
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content = ch.readInbound();
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// HTTP 200 has content.
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assertThat(content.content().readableBytes(), is(8));
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assertThat(content, CoreMatchers.<HttpContent>instanceOf(LastHttpContent.class));
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content.release();
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assertThat(ch.finish(), is(false));
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}
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@Test
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@Test
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public void testMultipleResponses() {
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public void testMultipleResponses() {
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String response = "HTTP/1.1 200 OK\r\n" +
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String response = "HTTP/1.1 200 OK\r\n" +
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