/
NettyServerHandlerTest.java
1142 lines (957 loc) · 40 KB
/
NettyServerHandlerTest.java
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/*
* Copyright 2014 The gRPC Authors
*
* Licensed 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.grpc.netty;
import static com.google.common.base.Charsets.UTF_8;
import static io.grpc.internal.GrpcUtil.DEFAULT_MAX_MESSAGE_SIZE;
import static io.grpc.internal.GrpcUtil.DEFAULT_SERVER_KEEPALIVE_TIMEOUT_NANOS;
import static io.grpc.internal.GrpcUtil.DEFAULT_SERVER_KEEPALIVE_TIME_NANOS;
import static io.grpc.netty.NettyServerBuilder.MAX_CONNECTION_AGE_GRACE_NANOS_INFINITE;
import static io.grpc.netty.NettyServerBuilder.MAX_CONNECTION_AGE_NANOS_DISABLED;
import static io.grpc.netty.NettyServerBuilder.MAX_CONNECTION_IDLE_NANOS_DISABLED;
import static io.grpc.netty.Utils.CONTENT_TYPE_GRPC;
import static io.grpc.netty.Utils.CONTENT_TYPE_HEADER;
import static io.grpc.netty.Utils.HTTP_METHOD;
import static io.grpc.netty.Utils.TE_HEADER;
import static io.grpc.netty.Utils.TE_TRAILERS;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.mockito.AdditionalAnswers.delegatesTo;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.ArgumentMatchers.anyLong;
import static org.mockito.ArgumentMatchers.anyString;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.ArgumentMatchers.isA;
import static org.mockito.Mockito.atLeastOnce;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;
import com.google.common.io.ByteStreams;
import com.google.common.truth.Truth;
import io.grpc.Attributes;
import io.grpc.InternalStatus;
import io.grpc.Metadata;
import io.grpc.ServerStreamTracer;
import io.grpc.Status;
import io.grpc.Status.Code;
import io.grpc.StreamTracer;
import io.grpc.internal.GrpcUtil;
import io.grpc.internal.KeepAliveManager;
import io.grpc.internal.ServerStream;
import io.grpc.internal.ServerStreamListener;
import io.grpc.internal.ServerTransportListener;
import io.grpc.internal.StatsTraceContext;
import io.grpc.internal.StreamListener;
import io.grpc.internal.testing.TestServerStreamTracer;
import io.grpc.netty.GrpcHttp2HeadersUtils.GrpcHttp2ServerHeadersDecoder;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPromise;
import io.netty.handler.codec.http2.DefaultHttp2Headers;
import io.netty.handler.codec.http2.Http2CodecUtil;
import io.netty.handler.codec.http2.Http2Error;
import io.netty.handler.codec.http2.Http2Headers;
import io.netty.handler.codec.http2.Http2LocalFlowController;
import io.netty.handler.codec.http2.Http2Settings;
import io.netty.handler.codec.http2.Http2Stream;
import io.netty.util.AsciiString;
import java.io.InputStream;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.Queue;
import java.util.concurrent.TimeUnit;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.DisableOnDebug;
import org.junit.rules.TestRule;
import org.junit.rules.Timeout;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import org.mockito.ArgumentCaptor;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
/**
* Unit tests for {@link NettyServerHandler}.
*/
@RunWith(JUnit4.class)
public class NettyServerHandlerTest extends NettyHandlerTestBase<NettyServerHandler> {
@Rule
public final TestRule globalTimeout = new DisableOnDebug(Timeout.seconds(10));
private static final int STREAM_ID = 3;
private static final AsciiString HTTP_FAKE_METHOD = AsciiString.of("FAKE");
@Mock
private ServerStreamListener streamListener;
@Mock
private ServerStreamTracer.Factory streamTracerFactory;
private final ServerTransportListener transportListener =
mock(ServerTransportListener.class, delegatesTo(new ServerTransportListenerImpl()));
private final TestServerStreamTracer streamTracer = new TestServerStreamTracer();
private NettyServerStream stream;
private KeepAliveManager spyKeepAliveManager;
final Queue<InputStream> streamListenerMessageQueue = new LinkedList<>();
private int maxConcurrentStreams = Integer.MAX_VALUE;
private int maxHeaderListSize = Integer.MAX_VALUE;
private boolean permitKeepAliveWithoutCalls = true;
private long permitKeepAliveTimeInNanos = 0;
private long maxConnectionIdleInNanos = MAX_CONNECTION_IDLE_NANOS_DISABLED;
private long maxConnectionAgeInNanos = MAX_CONNECTION_AGE_NANOS_DISABLED;
private long maxConnectionAgeGraceInNanos = MAX_CONNECTION_AGE_GRACE_NANOS_INFINITE;
private long keepAliveTimeInNanos = DEFAULT_SERVER_KEEPALIVE_TIME_NANOS;
private long keepAliveTimeoutInNanos = DEFAULT_SERVER_KEEPALIVE_TIMEOUT_NANOS;
private class ServerTransportListenerImpl implements ServerTransportListener {
@Override
public void streamCreated(ServerStream stream, String method, Metadata headers) {
stream.setListener(streamListener);
}
@Override
public Attributes transportReady(Attributes attributes) {
return Attributes.EMPTY;
}
@Override
public void transportTerminated() {
}
}
@Before
public void setUp() {
MockitoAnnotations.initMocks(this);
when(streamTracerFactory.newServerStreamTracer(anyString(), any(Metadata.class)))
.thenReturn(streamTracer);
doAnswer(
new Answer<Void>() {
@Override
public Void answer(InvocationOnMock invocation) throws Throwable {
StreamListener.MessageProducer producer =
(StreamListener.MessageProducer) invocation.getArguments()[0];
InputStream message;
while ((message = producer.next()) != null) {
streamListenerMessageQueue.add(message);
}
return null;
}
})
.when(streamListener)
.messagesAvailable(any(StreamListener.MessageProducer.class));
}
@Override
protected void manualSetUp() throws Exception {
assertNull("manualSetUp should not run more than once", handler());
initChannel(new GrpcHttp2ServerHeadersDecoder(GrpcUtil.DEFAULT_MAX_HEADER_LIST_SIZE));
// replace the keepAliveManager with spyKeepAliveManager
spyKeepAliveManager =
mock(KeepAliveManager.class, delegatesTo(handler().getKeepAliveManagerForTest()));
handler().setKeepAliveManagerForTest(spyKeepAliveManager);
// Simulate receipt of the connection preface
handler().handleProtocolNegotiationCompleted(Attributes.EMPTY, /*securityInfo=*/ null);
channelRead(Http2CodecUtil.connectionPrefaceBuf());
// Simulate receipt of initial remote settings.
ByteBuf serializedSettings = serializeSettings(new Http2Settings());
channelRead(serializedSettings);
}
@Test
public void transportReadyDelayedUntilConnectionPreface() throws Exception {
initChannel(new GrpcHttp2ServerHeadersDecoder(GrpcUtil.DEFAULT_MAX_HEADER_LIST_SIZE));
handler().handleProtocolNegotiationCompleted(Attributes.EMPTY, /*securityInfo=*/ null);
verify(transportListener, never()).transportReady(any(Attributes.class));
// Simulate receipt of the connection preface
channelRead(Http2CodecUtil.connectionPrefaceBuf());
channelRead(serializeSettings(new Http2Settings()));
verify(transportListener).transportReady(any(Attributes.class));
}
@Test
public void sendFrameShouldSucceed() throws Exception {
manualSetUp();
createStream();
// Send a frame and verify that it was written.
ChannelFuture future = enqueue(
new SendGrpcFrameCommand(stream.transportState(), content(), false));
assertTrue(future.isSuccess());
verifyWrite().writeData(eq(ctx()), eq(STREAM_ID), eq(content()), eq(0), eq(false),
any(ChannelPromise.class));
}
@Test
public void streamTracerCreated() throws Exception {
manualSetUp();
createStream();
verify(streamTracerFactory).newServerStreamTracer(eq("foo/bar"), any(Metadata.class));
StatsTraceContext statsTraceCtx = stream.statsTraceContext();
List<StreamTracer> tracers = statsTraceCtx.getTracersForTest();
assertEquals(1, tracers.size());
assertSame(streamTracer, tracers.get(0));
}
@Test
public void inboundDataWithEndStreamShouldForwardToStreamListener() throws Exception {
manualSetUp();
inboundDataShouldForwardToStreamListener(true);
}
@Test
public void inboundDataShouldForwardToStreamListener() throws Exception {
manualSetUp();
inboundDataShouldForwardToStreamListener(false);
}
private void inboundDataShouldForwardToStreamListener(boolean endStream) throws Exception {
createStream();
stream.request(1);
// Create a data frame and then trigger the handler to read it.
ByteBuf frame = grpcDataFrame(STREAM_ID, endStream, contentAsArray());
channelRead(frame);
verify(streamListener, atLeastOnce())
.messagesAvailable(any(StreamListener.MessageProducer.class));
InputStream message = streamListenerMessageQueue.poll();
assertArrayEquals(ByteBufUtil.getBytes(content()), ByteStreams.toByteArray(message));
message.close();
assertNull("no additional message expected", streamListenerMessageQueue.poll());
if (endStream) {
verify(streamListener).halfClosed();
}
verify(streamListener, atLeastOnce()).onReady();
verifyNoMoreInteractions(streamListener);
}
@Test
public void clientHalfCloseShouldForwardToStreamListener() throws Exception {
manualSetUp();
createStream();
stream.request(1);
channelRead(emptyGrpcFrame(STREAM_ID, true));
verify(streamListener, atLeastOnce())
.messagesAvailable(any(StreamListener.MessageProducer.class));
InputStream message = streamListenerMessageQueue.poll();
assertArrayEquals(new byte[0], ByteStreams.toByteArray(message));
assertNull("no additional message expected", streamListenerMessageQueue.poll());
verify(streamListener).halfClosed();
verify(streamListener, atLeastOnce()).onReady();
verifyNoMoreInteractions(streamListener);
}
@Test
public void clientCancelShouldForwardToStreamListener() throws Exception {
manualSetUp();
createStream();
channelRead(rstStreamFrame(STREAM_ID, (int) Http2Error.CANCEL.code()));
ArgumentCaptor<Status> statusCap = ArgumentCaptor.forClass(Status.class);
verify(streamListener).closed(statusCap.capture());
assertEquals(Code.CANCELLED, statusCap.getValue().getCode());
Truth.assertThat(statusCap.getValue().getDescription()).contains("RST_STREAM");
verify(streamListener, atLeastOnce()).onReady();
assertNull("no messages expected", streamListenerMessageQueue.poll());
}
@Test
public void streamErrorShouldNotCloseChannel() throws Exception {
manualSetUp();
createStream();
stream.request(1);
// When a DATA frame is read, throw an exception. It will be converted into an
// Http2StreamException.
RuntimeException e = new RuntimeException("Fake Exception");
doThrow(e).when(streamListener).messagesAvailable(any(StreamListener.MessageProducer.class));
// Read a DATA frame to trigger the exception.
channelRead(emptyGrpcFrame(STREAM_ID, true));
// Verify that the channel was NOT closed.
assertTrue(channel().isOpen());
// Verify the stream was closed.
ArgumentCaptor<Status> captor = ArgumentCaptor.forClass(Status.class);
verify(streamListener).closed(captor.capture());
assertEquals(e, captor.getValue().asException().getCause());
assertEquals(Code.UNKNOWN, captor.getValue().getCode());
}
@Test
public void closeShouldGracefullyCloseChannel() throws Exception {
manualSetUp();
handler().close(ctx(), newPromise());
verifyWrite().writeGoAway(eq(ctx()), eq(Integer.MAX_VALUE), eq(Http2Error.NO_ERROR.code()),
isA(ByteBuf.class), any(ChannelPromise.class));
verifyWrite().writePing(
eq(ctx()),
eq(false),
eq(NettyServerHandler.GRACEFUL_SHUTDOWN_PING),
isA(ChannelPromise.class));
channelRead(pingFrame(/*ack=*/ true , NettyServerHandler.GRACEFUL_SHUTDOWN_PING));
verifyWrite().writeGoAway(eq(ctx()), eq(0), eq(Http2Error.NO_ERROR.code()),
isA(ByteBuf.class), any(ChannelPromise.class));
// Verify that the channel was closed.
assertFalse(channel().isOpen());
}
@Test
public void exceptionCaughtShouldCloseConnection() throws Exception {
manualSetUp();
handler().exceptionCaught(ctx(), new RuntimeException("fake exception"));
// TODO(nmittler): EmbeddedChannel does not currently invoke the channelInactive processing,
// so exceptionCaught() will not close streams properly in this test.
// Once https://github.com/netty/netty/issues/4316 is resolved, we should also verify that
// any open streams are closed properly.
assertFalse(channel().isOpen());
}
@Test
public void channelInactiveShouldCloseStreams() throws Exception {
manualSetUp();
createStream();
handler().channelInactive(ctx());
ArgumentCaptor<Status> captor = ArgumentCaptor.forClass(Status.class);
verify(streamListener).closed(captor.capture());
assertFalse(captor.getValue().isOk());
}
@Test
public void shouldAdvertiseMaxConcurrentStreams() throws Exception {
maxConcurrentStreams = 314;
manualSetUp();
ArgumentCaptor<Http2Settings> captor = ArgumentCaptor.forClass(Http2Settings.class);
verifyWrite().writeSettings(
any(ChannelHandlerContext.class), captor.capture(), any(ChannelPromise.class));
assertEquals(maxConcurrentStreams, captor.getValue().maxConcurrentStreams().intValue());
}
@Test
public void shouldAdvertiseMaxHeaderListSize() throws Exception {
maxHeaderListSize = 123;
manualSetUp();
ArgumentCaptor<Http2Settings> captor = ArgumentCaptor.forClass(Http2Settings.class);
verifyWrite().writeSettings(
any(ChannelHandlerContext.class), captor.capture(), any(ChannelPromise.class));
assertEquals(maxHeaderListSize, captor.getValue().maxHeaderListSize().intValue());
}
@Test
public void connectionWindowShouldBeOverridden() throws Exception {
flowControlWindow = 1048576; // 1MiB
manualSetUp();
Http2Stream connectionStream = connection().connectionStream();
Http2LocalFlowController localFlowController = connection().local().flowController();
int actualInitialWindowSize = localFlowController.initialWindowSize(connectionStream);
int actualWindowSize = localFlowController.windowSize(connectionStream);
assertEquals(flowControlWindow, actualWindowSize);
assertEquals(flowControlWindow, actualInitialWindowSize);
}
@Test
public void cancelShouldSendRstStream() throws Exception {
manualSetUp();
createStream();
enqueue(new CancelServerStreamCommand(stream.transportState(), Status.DEADLINE_EXCEEDED));
verifyWrite().writeRstStream(eq(ctx()), eq(stream.transportState().id()),
eq(Http2Error.CANCEL.code()), any(ChannelPromise.class));
}
@Test
public void headersWithInvalidContentTypeShouldFail() throws Exception {
manualSetUp();
Http2Headers headers = new DefaultHttp2Headers()
.method(HTTP_METHOD)
.set(CONTENT_TYPE_HEADER, new AsciiString("application/bad", UTF_8))
.set(TE_HEADER, TE_TRAILERS)
.path(new AsciiString("/foo/bar"));
ByteBuf headersFrame = headersFrame(STREAM_ID, headers);
channelRead(headersFrame);
Http2Headers responseHeaders = new DefaultHttp2Headers()
.set(InternalStatus.CODE_KEY.name(), String.valueOf(Code.INTERNAL.value()))
.set(InternalStatus.MESSAGE_KEY.name(), "Content-Type 'application/bad' is not supported")
.status("" + 415)
.set(CONTENT_TYPE_HEADER, "text/plain; encoding=utf-8");
verifyWrite()
.writeHeaders(
eq(ctx()),
eq(STREAM_ID),
eq(responseHeaders),
eq(0),
eq(false),
any(ChannelPromise.class));
}
@Test
public void headersWithInvalidMethodShouldFail() throws Exception {
manualSetUp();
Http2Headers headers = new DefaultHttp2Headers()
.method(HTTP_FAKE_METHOD)
.set(CONTENT_TYPE_HEADER, CONTENT_TYPE_GRPC)
.path(new AsciiString("/foo/bar"));
ByteBuf headersFrame = headersFrame(STREAM_ID, headers);
channelRead(headersFrame);
Http2Headers responseHeaders = new DefaultHttp2Headers()
.set(InternalStatus.CODE_KEY.name(), String.valueOf(Code.INTERNAL.value()))
.set(InternalStatus.MESSAGE_KEY.name(), "Method 'FAKE' is not supported")
.status("" + 405)
.set(CONTENT_TYPE_HEADER, "text/plain; encoding=utf-8");
verifyWrite()
.writeHeaders(
eq(ctx()),
eq(STREAM_ID),
eq(responseHeaders),
eq(0),
eq(false),
any(ChannelPromise.class));
}
@Test
public void headersWithMissingPathShouldFail() throws Exception {
manualSetUp();
Http2Headers headers = new DefaultHttp2Headers()
.method(HTTP_METHOD)
.set(CONTENT_TYPE_HEADER, CONTENT_TYPE_GRPC);
ByteBuf headersFrame = headersFrame(STREAM_ID, headers);
channelRead(headersFrame);
Http2Headers responseHeaders = new DefaultHttp2Headers()
.set(InternalStatus.CODE_KEY.name(), String.valueOf(Code.UNIMPLEMENTED.value()))
.set(InternalStatus.MESSAGE_KEY.name(), "Expected path but is missing")
.status("" + 404)
.set(CONTENT_TYPE_HEADER, "text/plain; encoding=utf-8");
verifyWrite()
.writeHeaders(
eq(ctx()),
eq(STREAM_ID),
eq(responseHeaders),
eq(0),
eq(false),
any(ChannelPromise.class));
}
@Test
public void headersWithInvalidPathShouldFail() throws Exception {
manualSetUp();
Http2Headers headers = new DefaultHttp2Headers()
.method(HTTP_METHOD)
.set(CONTENT_TYPE_HEADER, CONTENT_TYPE_GRPC)
.path(new AsciiString("foo/bar"));
ByteBuf headersFrame = headersFrame(STREAM_ID, headers);
channelRead(headersFrame);
Http2Headers responseHeaders = new DefaultHttp2Headers()
.set(InternalStatus.CODE_KEY.name(), String.valueOf(Code.UNIMPLEMENTED.value()))
.set(InternalStatus.MESSAGE_KEY.name(), "Expected path to start with /: foo/bar")
.status("" + 404)
.set(CONTENT_TYPE_HEADER, "text/plain; encoding=utf-8");
verifyWrite()
.writeHeaders(
eq(ctx()),
eq(STREAM_ID),
eq(responseHeaders),
eq(0),
eq(false),
any(ChannelPromise.class));
}
@Test
public void headersSupportExtensionContentType() throws Exception {
manualSetUp();
Http2Headers headers = new DefaultHttp2Headers()
.method(HTTP_METHOD)
.set(CONTENT_TYPE_HEADER, new AsciiString("application/grpc+json", UTF_8))
.set(TE_HEADER, TE_TRAILERS)
.path(new AsciiString("/foo/bar"));
ByteBuf headersFrame = headersFrame(STREAM_ID, headers);
channelRead(headersFrame);
ArgumentCaptor<NettyServerStream> streamCaptor =
ArgumentCaptor.forClass(NettyServerStream.class);
ArgumentCaptor<String> methodCaptor = ArgumentCaptor.forClass(String.class);
verify(transportListener).streamCreated(streamCaptor.capture(), methodCaptor.capture(),
any(Metadata.class));
stream = streamCaptor.getValue();
}
@Test
public void keepAliveManagerOnDataReceived_headersRead() throws Exception {
manualSetUp();
ByteBuf headersFrame = headersFrame(STREAM_ID, new DefaultHttp2Headers());
channelRead(headersFrame);
verify(spyKeepAliveManager).onDataReceived();
verify(spyKeepAliveManager, never()).onTransportTermination();
}
@Test
public void keepAliveManagerOnDataReceived_dataRead() throws Exception {
manualSetUp();
createStream();
verify(spyKeepAliveManager).onDataReceived(); // received headers
channelRead(grpcDataFrame(STREAM_ID, false, contentAsArray()));
verify(spyKeepAliveManager, times(2)).onDataReceived();
channelRead(grpcDataFrame(STREAM_ID, false, contentAsArray()));
verify(spyKeepAliveManager, times(3)).onDataReceived();
verify(spyKeepAliveManager, never()).onTransportTermination();
}
@Test
public void keepAliveManagerOnDataReceived_rstStreamRead() throws Exception {
manualSetUp();
createStream();
verify(spyKeepAliveManager).onDataReceived(); // received headers
channelRead(rstStreamFrame(STREAM_ID, (int) Http2Error.CANCEL.code()));
verify(spyKeepAliveManager, times(2)).onDataReceived();
verify(spyKeepAliveManager, never()).onTransportTermination();
}
@Test
public void keepAliveManagerOnDataReceived_pingRead() throws Exception {
manualSetUp();
channelRead(pingFrame(false /* isAck */, 1234L));
verify(spyKeepAliveManager).onDataReceived();
verify(spyKeepAliveManager, never()).onTransportTermination();
}
@Test
public void keepAliveManagerOnDataReceived_pingActRead() throws Exception {
manualSetUp();
channelRead(pingFrame(true /* isAck */, 1234L));
verify(spyKeepAliveManager).onDataReceived();
verify(spyKeepAliveManager, never()).onTransportTermination();
}
@Test
public void keepAliveManagerOnTransportTermination() throws Exception {
manualSetUp();
handler().channelInactive(handler().ctx());
verify(spyKeepAliveManager).onTransportTermination();
}
@Test
public void keepAliveManager_pingSent() throws Exception {
keepAliveTimeInNanos = TimeUnit.MILLISECONDS.toNanos(10L);
keepAliveTimeoutInNanos = TimeUnit.MINUTES.toNanos(30L);
manualSetUp();
assertEquals(0, transportTracer.getStats().keepAlivesSent);
fakeClock().forwardNanos(keepAliveTimeInNanos);
assertEquals(1, transportTracer.getStats().keepAlivesSent);
verifyWrite().writePing(eq(ctx()), eq(false), eq(0xDEADL), any(ChannelPromise.class));
spyKeepAliveManager.onDataReceived();
fakeClock().forwardTime(10L, TimeUnit.MILLISECONDS);
verifyWrite(times(2))
.writePing(eq(ctx()), eq(false), eq(0xDEADL), any(ChannelPromise.class));
assertTrue(channel().isOpen());
}
@Test
public void keepAliveManager_pingTimeout() throws Exception {
keepAliveTimeInNanos = 123L /* nanoseconds */;
keepAliveTimeoutInNanos = 456L /* nanoseconds */;
manualSetUp();
fakeClock().forwardNanos(keepAliveTimeInNanos);
assertTrue(channel().isOpen());
fakeClock().forwardNanos(keepAliveTimeoutInNanos);
assertTrue(!channel().isOpen());
}
@Test
public void keepAliveEnforcer_enforcesPings() throws Exception {
permitKeepAliveWithoutCalls = false;
permitKeepAliveTimeInNanos = TimeUnit.HOURS.toNanos(1);
manualSetUp();
for (int i = 0; i < KeepAliveEnforcer.MAX_PING_STRIKES + 1; i++) {
channelRead(pingFrame(false /* isAck */, 1L));
}
verifyWrite().writeGoAway(eq(ctx()), eq(0), eq(Http2Error.ENHANCE_YOUR_CALM.code()),
any(ByteBuf.class), any(ChannelPromise.class));
assertFalse(channel().isActive());
}
@Test
public void keepAliveEnforcer_sendingDataResetsCounters() throws Exception {
permitKeepAliveWithoutCalls = false;
permitKeepAliveTimeInNanos = TimeUnit.HOURS.toNanos(1);
manualSetUp();
createStream();
Http2Headers headers = Utils.convertServerHeaders(new Metadata());
ChannelFuture future = enqueue(
SendResponseHeadersCommand.createHeaders(stream.transportState(), headers));
future.get();
for (int i = 0; i < 10; i++) {
future = enqueue(
new SendGrpcFrameCommand(stream.transportState(), content().retainedSlice(), false));
future.get();
channel().releaseOutbound();
channelRead(pingFrame(false /* isAck */, 1L));
}
verifyWrite(never()).writeGoAway(eq(ctx()), eq(STREAM_ID),
eq(Http2Error.ENHANCE_YOUR_CALM.code()), any(ByteBuf.class), any(ChannelPromise.class));
}
@Test
public void keepAliveEnforcer_initialIdle() throws Exception {
permitKeepAliveWithoutCalls = false;
permitKeepAliveTimeInNanos = 0;
manualSetUp();
for (int i = 0; i < KeepAliveEnforcer.MAX_PING_STRIKES + 1; i++) {
channelRead(pingFrame(false /* isAck */, 1L));
}
verifyWrite().writeGoAway(eq(ctx()), eq(0),
eq(Http2Error.ENHANCE_YOUR_CALM.code()), any(ByteBuf.class), any(ChannelPromise.class));
assertFalse(channel().isActive());
}
@Test
public void keepAliveEnforcer_noticesActive() throws Exception {
permitKeepAliveWithoutCalls = false;
permitKeepAliveTimeInNanos = 0;
manualSetUp();
createStream();
for (int i = 0; i < 10; i++) {
channelRead(pingFrame(false /* isAck */, 1L));
}
verifyWrite(never()).writeGoAway(eq(ctx()), eq(STREAM_ID),
eq(Http2Error.ENHANCE_YOUR_CALM.code()), any(ByteBuf.class), any(ChannelPromise.class));
}
@Test
public void keepAliveEnforcer_noticesInactive() throws Exception {
permitKeepAliveWithoutCalls = false;
permitKeepAliveTimeInNanos = 0;
manualSetUp();
createStream();
channelRead(rstStreamFrame(STREAM_ID, (int) Http2Error.CANCEL.code()));
for (int i = 0; i < KeepAliveEnforcer.MAX_PING_STRIKES + 1; i++) {
channelRead(pingFrame(false /* isAck */, 1L));
}
verifyWrite().writeGoAway(eq(ctx()), eq(STREAM_ID),
eq(Http2Error.ENHANCE_YOUR_CALM.code()), any(ByteBuf.class), any(ChannelPromise.class));
assertFalse(channel().isActive());
}
@Test
public void noGoAwaySentBeforeMaxConnectionIdleReached() throws Exception {
maxConnectionIdleInNanos = TimeUnit.MINUTES.toNanos(30L);
manualSetUp();
fakeClock().forwardTime(20, TimeUnit.MINUTES);
// GO_AWAY not sent yet
verifyWrite(never())
.writeGoAway(
any(ChannelHandlerContext.class),
anyInt(),
anyLong(),
any(ByteBuf.class),
any(ChannelPromise.class));
assertTrue(channel().isOpen());
}
@Test
public void maxConnectionIdle_goAwaySent_pingAck() throws Exception {
maxConnectionIdleInNanos = TimeUnit.MILLISECONDS.toNanos(10L);
manualSetUp();
assertTrue(channel().isOpen());
fakeClock().forwardNanos(maxConnectionIdleInNanos);
// first GO_AWAY sent
verifyWrite().writeGoAway(
eq(ctx()), eq(Integer.MAX_VALUE), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
// ping sent
verifyWrite().writePing(
eq(ctx()), eq(false), eq(0x97ACEF001L), any(ChannelPromise.class));
verifyWrite(never()).writeGoAway(
eq(ctx()), eq(0), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
channelRead(pingFrame(true /* isAck */, 0xDEADL)); // irrelevant ping Ack
verifyWrite(never()).writeGoAway(
eq(ctx()), eq(0), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
assertTrue(channel().isOpen());
channelRead(pingFrame(true /* isAck */, 0x97ACEF001L));
// second GO_AWAY sent
verifyWrite().writeGoAway(
eq(ctx()), eq(0), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
// channel closed
assertTrue(!channel().isOpen());
}
@Test
public void maxConnectionIdle_goAwaySent_pingTimeout() throws Exception {
maxConnectionIdleInNanos = TimeUnit.MILLISECONDS.toNanos(10L);
manualSetUp();
assertTrue(channel().isOpen());
fakeClock().forwardNanos(maxConnectionIdleInNanos);
// first GO_AWAY sent
verifyWrite().writeGoAway(
eq(ctx()), eq(Integer.MAX_VALUE), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
// ping sent
verifyWrite().writePing(
eq(ctx()), eq(false), eq(0x97ACEF001L), any(ChannelPromise.class));
verifyWrite(never()).writeGoAway(
eq(ctx()), eq(0), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
assertTrue(channel().isOpen());
fakeClock().forwardTime(10, TimeUnit.SECONDS);
// second GO_AWAY sent
verifyWrite().writeGoAway(
eq(ctx()), eq(0), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
// channel closed
assertTrue(!channel().isOpen());
}
@Test
public void maxConnectionIdle_activeThenRst_pingAck() throws Exception {
maxConnectionIdleInNanos = TimeUnit.MILLISECONDS.toNanos(10L);
manualSetUp();
createStream();
fakeClock().forwardNanos(maxConnectionIdleInNanos);
// GO_AWAY not sent when active
verifyWrite(never())
.writeGoAway(
any(ChannelHandlerContext.class),
anyInt(),
anyLong(),
any(ByteBuf.class),
any(ChannelPromise.class));
assertTrue(channel().isOpen());
channelRead(rstStreamFrame(STREAM_ID, (int) Http2Error.CANCEL.code()));
fakeClock().forwardNanos(maxConnectionIdleInNanos);
// first GO_AWAY sent
verifyWrite().writeGoAway(
eq(ctx()), eq(Integer.MAX_VALUE), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
// ping sent
verifyWrite().writePing(
eq(ctx()), eq(false), eq(0x97ACEF001L), any(ChannelPromise.class));
verifyWrite(never()).writeGoAway(
eq(ctx()), eq(STREAM_ID), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
assertTrue(channel().isOpen());
fakeClock().forwardTime(10, TimeUnit.SECONDS);
// second GO_AWAY sent
verifyWrite().writeGoAway(
eq(ctx()), eq(STREAM_ID), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
// channel closed
assertTrue(!channel().isOpen());
}
@Test
public void maxConnectionIdle_activeThenRst_pingTimeoutk() throws Exception {
maxConnectionIdleInNanos = TimeUnit.MILLISECONDS.toNanos(10L);
manualSetUp();
createStream();
fakeClock().forwardNanos(maxConnectionIdleInNanos);
// GO_AWAY not sent when active
verifyWrite(never())
.writeGoAway(
any(ChannelHandlerContext.class),
anyInt(),
anyLong(),
any(ByteBuf.class),
any(ChannelPromise.class));
assertTrue(channel().isOpen());
channelRead(rstStreamFrame(STREAM_ID, (int) Http2Error.CANCEL.code()));
fakeClock().forwardNanos(maxConnectionIdleInNanos);
// first GO_AWAY sent
verifyWrite().writeGoAway(
eq(ctx()), eq(Integer.MAX_VALUE), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
// ping sent
verifyWrite().writePing(
eq(ctx()), eq(false), eq(0x97ACEF001L), any(ChannelPromise.class));
verifyWrite(never()).writeGoAway(
eq(ctx()), eq(STREAM_ID), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
assertTrue(channel().isOpen());
channelRead(pingFrame(true /* isAck */, 0x97ACEF001L));
// second GO_AWAY sent
verifyWrite().writeGoAway(
eq(ctx()), eq(STREAM_ID), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
// channel closed
assertTrue(!channel().isOpen());
}
@Test
public void noGoAwaySentBeforeMaxConnectionAgeReached() throws Exception {
maxConnectionAgeInNanos = TimeUnit.MINUTES.toNanos(30L);
manualSetUp();
fakeClock().forwardTime(20, TimeUnit.MINUTES);
// GO_AWAY not sent yet
verifyWrite(never())
.writeGoAway(
any(ChannelHandlerContext.class),
anyInt(),
anyLong(),
any(ByteBuf.class),
any(ChannelPromise.class));
assertTrue(channel().isOpen());
}
@Test
public void maxConnectionAge_goAwaySent_pingAck() throws Exception {
maxConnectionAgeInNanos = TimeUnit.MILLISECONDS.toNanos(10L);
manualSetUp();
assertTrue(channel().isOpen());
fakeClock().forwardNanos(maxConnectionAgeInNanos);
// first GO_AWAY sent
verifyWrite().writeGoAway(
eq(ctx()), eq(Integer.MAX_VALUE), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
// ping sent
verifyWrite().writePing(
eq(ctx()), eq(false), eq(0x97ACEF001L), any(ChannelPromise.class));
verifyWrite(never()).writeGoAway(
eq(ctx()), eq(0), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
channelRead(pingFrame(true /* isAck */, 0xDEADL)); // irrelevant ping Ack
verifyWrite(never()).writeGoAway(
eq(ctx()), eq(0), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
assertTrue(channel().isOpen());
channelRead(pingFrame(true /* isAck */, 0x97ACEF001L));
// second GO_AWAY sent
verifyWrite().writeGoAway(
eq(ctx()), eq(0), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
// channel closed
assertTrue(!channel().isOpen());
}
@Test
public void maxConnectionAge_goAwaySent_pingTimeout() throws Exception {
maxConnectionAgeInNanos = TimeUnit.MILLISECONDS.toNanos(10L);
manualSetUp();
assertTrue(channel().isOpen());
fakeClock().forwardNanos(maxConnectionAgeInNanos);
// first GO_AWAY sent
verifyWrite().writeGoAway(
eq(ctx()), eq(Integer.MAX_VALUE), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
// ping sent
verifyWrite().writePing(
eq(ctx()), eq(false), eq(0x97ACEF001L), any(ChannelPromise.class));
verifyWrite(never()).writeGoAway(
eq(ctx()), eq(0), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
assertTrue(channel().isOpen());
fakeClock().forwardTime(10, TimeUnit.SECONDS);
// second GO_AWAY sent
verifyWrite().writeGoAway(
eq(ctx()), eq(0), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
// channel closed
assertTrue(!channel().isOpen());
}
@Test
public void maxConnectionAgeGrace_channelStillOpenDuringGracePeriod() throws Exception {
maxConnectionAgeInNanos = TimeUnit.MILLISECONDS.toNanos(10L);
maxConnectionAgeGraceInNanos = TimeUnit.MINUTES.toNanos(30L);
manualSetUp();
createStream();
fakeClock().forwardNanos(maxConnectionAgeInNanos);
// first GO_AWAY sent
verifyWrite().writeGoAway(
eq(ctx()), eq(Integer.MAX_VALUE), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
// ping sent
verifyWrite().writePing(
eq(ctx()), eq(false), eq(0x97ACEF001L), any(ChannelPromise.class));
verifyWrite(never()).writeGoAway(
eq(ctx()), eq(STREAM_ID), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));
fakeClock().forwardTime(20, TimeUnit.MINUTES);
// second GO_AWAY sent
verifyWrite().writeGoAway(
eq(ctx()), eq(STREAM_ID), eq(Http2Error.NO_ERROR.code()), any(ByteBuf.class),
any(ChannelPromise.class));