Example usage for io.netty.handler.codec.http2 Http2Error ENHANCE_YOUR_CALM

Introduction

In this page you can find the example usage for io.netty.handler.codec.http2 Http2Error ENHANCE_YOUR_CALM.

Prototype

Http2Error ENHANCE_YOUR_CALM

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Usage

From source file:io.grpc.netty.Http2ControlFrameLimitEncoder.java

License:Apache License

private ChannelPromise handleOutstandingControlFrames(ChannelHandlerContext ctx, ChannelPromise promise) {
    if (!limitReached) {
        if (outstandingControlFrames == maxOutstandingControlFrames) {
            // Let's try to flush once as we may be able to flush some of the control frames.
            ctx.flush();//from  w ww  . java 2s  .  com
        }
        if (outstandingControlFrames == maxOutstandingControlFrames) {
            limitReached = true;
            Http2Exception exception = Http2Exception.connectionError(Http2Error.ENHANCE_YOUR_CALM,
                    "Maximum number %d of outstanding control frames reached", maxOutstandingControlFrames);
            logger.info("Maximum number {} of outstanding control frames reached. Closing channel {}",
                    maxOutstandingControlFrames, ctx.channel(), exception);

            // First notify the Http2LifecycleManager and then close the connection.
            lifecycleManager.onError(ctx, true, exception);
            ctx.close();
        }
        outstandingControlFrames++;

        // We did not reach the limit yet, add the listener to decrement the number of outstanding control frames
        // once the promise was completed
        return promise.unvoid().addListener(outstandingControlFramesListener);
    }
    return promise;
}

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From source file:io.grpc.netty.NettyClientHandler.java

License:Apache License

private NettyClientHandler(Http2ConnectionDecoder decoder, StreamBufferingEncoder encoder,
        Http2Settings settings, ClientTransportLifecycleManager lifecycleManager,
        KeepAliveManager keepAliveManager, Supplier<Stopwatch> stopwatchFactory,
        final Runnable tooManyPingsRunnable, TransportTracer transportTracer, Attributes eagAttributes,
        String authority) {/*  w w  w. j  av  a  2s .c o  m*/
    super(/* channelUnused= */ null, decoder, encoder, settings);
    this.lifecycleManager = lifecycleManager;
    this.keepAliveManager = keepAliveManager;
    this.stopwatchFactory = stopwatchFactory;
    this.transportTracer = Preconditions.checkNotNull(transportTracer);
    this.eagAttributes = eagAttributes;
    this.authority = authority;
    this.attributes = Attributes.newBuilder().set(GrpcAttributes.ATTR_CLIENT_EAG_ATTRS, eagAttributes).build();

    // Set the frame listener on the decoder.
    decoder().frameListener(new FrameListener());

    Http2Connection connection = encoder.connection();
    streamKey = connection.newKey();

    connection.addListener(new Http2ConnectionAdapter() {
        @Override
        public void onGoAwayReceived(int lastStreamId, long errorCode, ByteBuf debugData) {
            byte[] debugDataBytes = ByteBufUtil.getBytes(debugData);
            goingAway(statusFromGoAway(errorCode, debugDataBytes));
            if (errorCode == Http2Error.ENHANCE_YOUR_CALM.code()) {
                String data = new String(debugDataBytes, UTF_8);
                logger.log(Level.WARNING, "Received GOAWAY with ENHANCE_YOUR_CALM. Debug data: {1}", data);
                if ("too_many_pings".equals(data)) {
                    tooManyPingsRunnable.run();
                }
            }
        }

        @Override
        public void onStreamActive(Http2Stream stream) {
            if (connection().numActiveStreams() == 1 && NettyClientHandler.this.keepAliveManager != null) {
                NettyClientHandler.this.keepAliveManager.onTransportActive();
            }
        }

        @Override
        public void onStreamClosed(Http2Stream stream) {
            // Although streams with CALL_OPTIONS_RPC_OWNED_BY_BALANCER are not marked as "in-use" in
            // the first place, we don't propagate that option here, and it's safe to reset the in-use
            // state for them, which will be a cheap no-op.
            inUseState.updateObjectInUse(stream, false);
            if (connection().numActiveStreams() == 0 && NettyClientHandler.this.keepAliveManager != null) {
                NettyClientHandler.this.keepAliveManager.onTransportIdle();
            }
        }
    });
}

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From source file:io.grpc.netty.NettyServerHandlerTest.java

License:Apache License

@Test
public void keepAliveEnforcer_enforcesPings() throws Exception {
    permitKeepAliveWithoutCalls = false;
    permitKeepAliveTimeInNanos = TimeUnit.HOURS.toNanos(1);
    manualSetUp();/*from   w w  w  .  j  av a2s  .  com*/

    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());
}

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From source file:io.grpc.netty.NettyServerHandlerTest.java

License:Apache License

@Test
public void keepAliveEnforcer_sendingDataResetsCounters() throws Exception {
    permitKeepAliveWithoutCalls = false;
    permitKeepAliveTimeInNanos = TimeUnit.HOURS.toNanos(1);
    manualSetUp();//from   ww  w  .  j  a  v  a 2s .  c  o m

    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));
}

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From source file:io.grpc.netty.NettyServerHandlerTest.java

License:Apache License

@Test
public void keepAliveEnforcer_initialIdle() throws Exception {
    permitKeepAliveWithoutCalls = false;
    permitKeepAliveTimeInNanos = 0;/*from ww  w .  ja v  a2s.  c o  m*/
    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());
}

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From source file:io.grpc.netty.NettyServerHandlerTest.java

License:Apache License

@Test
public void keepAliveEnforcer_noticesActive() throws Exception {
    permitKeepAliveWithoutCalls = false;
    permitKeepAliveTimeInNanos = 0;//from   ww  w.  ja  v a2  s .  co  m
    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));
}

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From source file:io.grpc.netty.NettyServerHandlerTest.java

License:Apache License

@Test
public void keepAliveEnforcer_noticesInactive() throws Exception {
    permitKeepAliveWithoutCalls = false;
    permitKeepAliveTimeInNanos = 0;/*from   w w w .  j  a  v a  2  s. c om*/
    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());
}

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