How to chain multiple send and receive operations with reactor-netty TcpClient
the-tsing opened this issue · comments
I need to execute custom handshake in a TCP connection consisting of sequential send -> receive -> send -> recive and return the last receive value, but I'm having problems with chaining the execution.
Here is what I have::
TcpClient.create()
.host("localhost")
.port(4059)
.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 3000)
.wiretap(true)
.connect()
.flatMap(connection ->
connection.outbound().sendByteArray(Mono.just(new byte[]{1, 2, 3}))
.then(connection.inbound().receive().asByteArray().next().flatMap(bytes -> {
log.info("bytes {}", bytes);
return Mono.empty();
})).sendByteArray(Mono.just(new byte[]{5, 6, 7}))
.then(connection.inbound().receive().asByteArray().next().flatMap(bytes -> {
log.info("bytes {}", bytes);
return Mono.empty();
}))
.then()
)
.subscribe();
server.onDispose().block();
but have an error:
Failed to mark a promise as failure because it has failed already: DefaultChannelPromise@49bd30ac(failure: java.lang.IndexOutOfBoundsException: srcIndex: 0), unnotified cause: java.lang.IndexOutOfBoundsException: srcIndex: 0
at io.netty.buffer.UnsafeByteBufUtil.setBytes(UnsafeByteBufUtil.java:519)
at io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:193)
at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1104)
at io.netty.channel.nio.AbstractNioChannel.newDirectBuffer(AbstractNioChannel.java:443)
at io.netty.channel.nio.AbstractNioByteChannel.filterOutboundMessage(AbstractNioByteChannel.java:278)
at io.netty.channel.AbstractChannel$AbstractUnsafe.write(AbstractChannel.java:868)
at io.netty.channel.DefaultChannelPipeline$HeadContext.write(DefaultChannelPipeline.java:1367)
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:877)
at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:940)
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:966)
at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:934)
at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:984)
at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1025)
at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:306)
at reactor.netty.channel.ChannelOperations.lambda$send$0(ChannelOperations.java:293)
at reactor.core.publisher.FluxFlatMap.trySubscribeScalarMap(FluxFlatMap.java:152)
at reactor.core.publisher.MonoFlatMap.subscribeOrReturn(MonoFlatMap.java:53)
at reactor.core.publisher.Mono.subscribe(Mono.java:4480)
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.subscribeNext(MonoIgnoreThen.java:263)
at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:51)
at reactor.core.publisher.Mono.subscribe(Mono.java:4495)
at reactor.netty.NettyOutbound.subscribe(NettyOutbound.java:336)
at reactor.core.publisher.MonoSource.subscribe(MonoSource.java:71)
at reactor.core.publisher.Mono.subscribe(Mono.java:4495)
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.subscribeNext(MonoIgnoreThen.java:263)
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.onComplete(MonoIgnoreThen.java:203)
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:155)
at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:82)
at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:122)
at reactor.netty.channel.FluxReceive.onInboundNext(FluxReceive.java:377)
at reactor.netty.channel.ChannelOperations.onInboundNext(ChannelOperations.java:411)
at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:113)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:842)
io.netty.util.IllegalReferenceCountException: refCnt: 0, decrement: 1
at io.netty.util.internal.ReferenceCountUpdater.toLiveRealRefCnt(ReferenceCountUpdater.java:83)
at io.netty.util.internal.ReferenceCountUpdater.release(ReferenceCountUpdater.java:148)
at io.netty.buffer.AbstractReferenceCountedByteBuf.release(AbstractReferenceCountedByteBuf.java:101)
at io.netty.util.ReferenceCountUtil.release(ReferenceCountUtil.java:90)
at io.netty.channel.AbstractChannel$AbstractUnsafe.write(AbstractChannel.java:875)
at io.netty.channel.DefaultChannelPipeline$HeadContext.write(DefaultChannelPipeline.java:1367)
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:877)
at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:940)
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:966)
at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:934)
at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:984)
at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1025)
at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:306)
at reactor.netty.channel.ChannelOperations.lambda$send$0(ChannelOperations.java:293)
at reactor.core.publisher.FluxFlatMap.trySubscribeScalarMap(FluxFlatMap.java:152)
at reactor.core.publisher.MonoFlatMap.subscribeOrReturn(MonoFlatMap.java:53)
at reactor.core.publisher.Mono.subscribe(Mono.java:4480)
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.subscribeNext(MonoIgnoreThen.java:263)
at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:51)
at reactor.core.publisher.Mono.subscribe(Mono.java:4495)
at reactor.netty.NettyOutbound.subscribe(NettyOutbound.java:336)
at reactor.core.publisher.MonoSource.subscribe(MonoSource.java:71)
at reactor.core.publisher.Mono.subscribe(Mono.java:4495)
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.subscribeNext(MonoIgnoreThen.java:263)
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.onComplete(MonoIgnoreThen.java:203)
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:155)
at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:82)
at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:122)
at reactor.netty.channel.FluxReceive.onInboundNext(FluxReceive.java:377)
at reactor.netty.channel.ChannelOperations.onInboundNext(ChannelOperations.java:411)
at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:113)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:842)
2024-01-14 21:12:12,578 ERROR [actor-tcp-nio-2] reactor.core.publisher.Operators:324 : Operator called default onErrorDropped
reactor.core.Exceptions$ErrorCallbackNotImplemented: java.lang.IndexOutOfBoundsException: srcIndex: 0
Caused by: java.lang.IndexOutOfBoundsException: srcIndex: 0
at io.netty.buffer.UnsafeByteBufUtil.setBytes(UnsafeByteBufUtil.java:519)
at io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:193)
at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1104)
at io.netty.channel.nio.AbstractNioChannel.newDirectBuffer(AbstractNioChannel.java:443)
at io.netty.channel.nio.AbstractNioByteChannel.filterOutboundMessage(AbstractNioByteChannel.java:278)
at io.netty.channel.AbstractChannel$AbstractUnsafe.write(AbstractChannel.java:868)
at io.netty.channel.DefaultChannelPipeline$HeadContext.write(DefaultChannelPipeline.java:1367)
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:877)
at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:940)
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:966)
at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:934)
at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:984)
at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1025)
at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:306)
at reactor.netty.channel.ChannelOperations.lambda$send$0(ChannelOperations.java:293)
at reactor.core.publisher.FluxFlatMap.trySubscribeScalarMap(FluxFlatMap.java:152)
at reactor.core.publisher.MonoFlatMap.subscribeOrReturn(MonoFlatMap.java:53)
at reactor.core.publisher.Mono.subscribe(Mono.java:4480)
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.subscribeNext(MonoIgnoreThen.java:263)
at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:51)
at reactor.core.publisher.Mono.subscribe(Mono.java:4495)
at reactor.netty.NettyOutbound.subscribe(NettyOutbound.java:336)
at reactor.core.publisher.MonoSource.subscribe(MonoSource.java:71)
at reactor.core.publisher.Mono.subscribe(Mono.java:4495)
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.subscribeNext(MonoIgnoreThen.java:263)
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.onComplete(MonoIgnoreThen.java:203)
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:155)
at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:82)
at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:122)
at reactor.netty.channel.FluxReceive.onInboundNext(FluxReceive.java:377)
at reactor.netty.channel.ChannelOperations.onInboundNext(ChannelOperations.java:411)
at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:113)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:842)
Can someone point me to the right direction how to correctly chain TcpClient send -> receive -> send -> receive and return the last received value?
Thanks for getting in touch, but it feels like this is a question that would be better suited to Gitter or Stack Overflow. As mentioned in README, we prefer to use GitHub issues only for bugs and enhancements. Feel free to update this issue with a link to the re-posted question (so that other people can find it) or add some more details if you feel this is a genuine bug.