间歇性 java.io.IOException：从 Amazon EC2 内部的 jdk.internal.net.http.HttpClientImpl.send 中的连接重置（不是对等连接重置）
[英]Intermittent java.io.IOException: Connection reset (not connection reset by peer) in jdk.internal.net.http.HttpClientImpl.send from inside Amazon EC2
问题描述
Using openjdk 14.0.1 in Amazon EC2 I'm getting an intermittent java.io.IOException: Connection reset when hitting an external REST service with a POST request over https.
在 Amazon EC2 中使用 openjdk 14.0.1 我收到间歇性java.io.IOException: Connection reset when hit an external REST service with a POST request over https。 This does not happen outside of EC2.这不会发生在 EC2 之外。
It happens once after a short period of inactivity and resolves once the REST service is called again.它在短时间不活动后发生一次，并在再次调用 REST 服务后解决。 Rinse repeat.冲洗重复。
The error does not occur hitting the external REST service directly via curl using a similar load, only hitting it after short periods of inactivity from within the JVM.使用类似的负载通过 curl 直接命中外部 REST 服务不会发生该错误，只会在 JVM 内短时间不活动后命中它。
I've been focusing around the connection pooling in jdk.internal.net.http.Http2ClientImpl .我一直在关注jdk.internal.net.http.Http2ClientImpl的连接池。 My theory is a stale connection is being picked up from the pool but I have no concrete evidence of this.我的理论是从池中获取了一个陈旧的连接，但我没有具体的证据。
Perhaps it's something else.也许是别的东西。 What could be causing this?什么可能导致这种情况？
In the meantime I've swapped out the HTTP client for the Apache offering and so far, so good.与此同时，我已经将 HTTP 客户端换成了 Apache 产品，到目前为止，一切都很好。
Stack trace:堆栈跟踪：
java.io.IOException: Connection reset
at java.net.http/jdk.internal.net.http.HttpClientImpl.send(HttpClientImpl.java:576)
at java.net.http/jdk.internal.net.http.HttpClientFacade.send(HttpClientFacade.java:119)
at Main.main(Main.java:201)
Caused by: java.net.SocketException: Connection reset
at java.base/sun.nio.ch.SocketChannelImpl.throwConnectionReset(SocketChannelImpl.java:345)
at java.base/sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:376)
at java.net.http/jdk.internal.net.http.SocketTube.readAvailable(SocketTube.java:1153)
at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$InternalReadSubscription.read(SocketTube.java:821)
at java.net.http/jdk.internal.net.http.SocketTube$SocketFlowTask.run(SocketTube.java:175)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:198)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:271)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:224)
at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$InternalReadSubscription.signalReadable(SocketTube.java:763)
at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$ReadEvent.signalEvent(SocketTube.java:941)
at java.net.http/jdk.internal.net.http.SocketTube$SocketFlowEvent.handle(SocketTube.java:245)
at java.net.http/jdk.internal.net.http.HttpClientImpl$SelectorManager.handleEvent(HttpClientImpl.java:968)
at java.net.http/jdk.internal.net.http.HttpClientImpl$SelectorManager.lambda$run$3(HttpClientImpl.java:923)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1510)
at java.net.http/jdk.internal.net.http.HttpClientImpl$SelectorManager.run(HttpClientImpl.java:923)
java.io.IOException: Connection reset
at java.net.http/jdk.internal.net.http.HttpClientImpl.send(HttpClientImpl.java:576)
at java.net.http/jdk.internal.net.http.HttpClientFacade.send(HttpClientFacade.java:119)
at Main.main(Main.java:201)
Caused by: java.net.SocketException: Connection reset
at java.base/sun.nio.ch.SocketChannelImpl.throwConnectionReset(SocketChannelImpl.java:345)
at java.base/sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:376)
at java.net.http/jdk.internal.net.http.SocketTube.readAvailable(SocketTube.java:1153)
at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$InternalReadSubscription.read(SocketTube.java:821)
at java.net.http/jdk.internal.net.http.SocketTube$SocketFlowTask.run(SocketTube.java:175)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:198)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:271)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:224)
at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$InternalReadSubscription.signalReadable(SocketTube.java:763)
at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$ReadEvent.signalEvent(SocketTube.java:941)
at java.net.http/jdk.internal.net.http.SocketTube$SocketFlowEvent.handle(SocketTube.java:245)
at java.net.http/jdk.internal.net.http.HttpClientImpl$SelectorManager.handleEvent(HttpClientImpl.java:968)
at java.net.http/jdk.internal.net.http.HttpClientImpl$SelectorManager.lambda$run$3(HttpClientImpl.java:923)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1510)
at java.net.http/jdk.internal.net.http.HttpClientImpl$SelectorManager.run(HttpClientImpl.java:923)
With heavy debugging on:进行大量调试：
DEBUG: [qtp1724731843-13] [1810s 799ms] AsyncSSLConnection(SSLTube(SocketTube(1))) HttpPublisher: sending 1646 bytes (2 buffers) to SSLTube(SocketTube(1))
DEBUG: [qtp1724731843-13] [1810s 800ms] SSLTube(SocketTube(1)) sending 2 buffers to SSL flow delegate
DEBUG: [qtp1724731843-13] [1810s 800ms] SSL Writer(SocketTube(1)) onNext
DEBUG: [qtp1724731843-13] [1810s 800ms] SSL Writer(SocketTube(1)) added 2 (1646 bytes) to the writeList
DEBUG: [qtp1724731843-13] [1810s 800ms] SSL Writer(SocketTube(1)) processData, writeList remaining:1646, hsTriggered:false, needWrap:false
DEBUG: [qtp1724731843-13] [1810s 800ms] SSL Writer(SocketTube(1)) wrapping 1646 bytes
DEBUG: [qtp1724731843-13] [1810s 800ms] SSL Writer(SocketTube(1)) SSLResult: Status = OK HandshakeStatus = NOT_HANDSHAKING
bytesConsumed = 1646 bytesProduced = 1684 sequenceNumber = 20
DEBUG: [qtp1724731843-13] [1810s 800ms] SSL Writer(SocketTube(1)) OK => produced: 1684 bytes into 1688, not wrapped: 0
DEBUG: [qtp1724731843-13] [1810s 800ms] SSL Writer(SocketTube(1)) wrapBuffer returned Status = OK HandshakeStatus = NOT_HANDSHAKING
bytesConsumed = 1646 bytesProduced = 1684 sequenceNumber = 20
DEBUG: [qtp1724731843-13] [1810s 800ms] SSL Writer(SocketTube(1)) Sending 1684 bytes downstream
DEBUG: [qtp1724731843-13] [1810s 800ms] SSL Writer(SocketTube(1)) Adding 1684 to outputQ queue
DEBUG: [qtp1724731843-13] [1810s 800ms] SSL Writer(SocketTube(1)) pushScheduler is alive
DEBUG: [qtp1724731843-13] [1810s 800ms] SSL Writer(SocketTube(1)) DownstreamPusher: queue not empty, downstreamSubscription: SubscriptionBase: window = 1 cancelled = false
DEBUG: [qtp1724731843-13] [1810s 800ms] SSL Writer(SocketTube(1)) DownstreamPusher: Pushing 1684 bytes downstream
DEBUG: [qtp1724731843-13] [1810s 800ms] SocketTube(1) trying to write: 1684
DEBUG: [qtp1724731843-13] [1810s 807ms] SocketTube(1) write error: java.io.IOException: Broken pipe
DEBUG: [qtp1724731843-13] [1810s 808ms] SocketTube(1) error signalled java.io.IOException: Broken pipe
DEBUG: [qtp1724731843-13] [1810s 808ms] SocketTube(1) write: cancel
DEBUG: [qtp1724731843-13] [1810s 808ms] SocketTube(1) write: resetting demand to 0
DEBUG: [qtp1724731843-13] [1810s 808ms] AsyncSSLConnection(SSLTube(SocketTube(1))) HttpPublisher: cancelled by SSLTube(SocketTube(1))
DEBUG: [HttpClient-1-SelectorManager] [1810s 809ms] SocketTube(1) Sending error java.net.SocketException: Connection reset to subscriber READER: SubscriberWrapper: upstreamCompleted: false upstreamWindow: 1 downstreamCompleted: false completionAcknowledged: false outputQ size: 0 cf: jdk.internal.net.http.common.MinimalFuture@e19f43d[Not completed, 4 dependents] (id=21) downstreamSubscription: SubscriptionBase: window = 9223372036854775778 cancelled = false downstreamSubscriber: SSLSubscriberWrapper[SSLTube(SocketTube(1)), delegate: DelegateWrapper[subscribedCalled: true, subscribedDone: true, completed: false, error: null]: jdk.internal.net.http.Http2Connection$Http2TubeSubscriber@6500fba3, getALPN: jdk.internal.net.http.common.MinimalFuture@7dbd5c04[Completed normally] (id=27), onCompleteReceived: false, onError: null], readBuf: java.nio.HeapByteBuffer[pos=1618 lim=1618 cap=4096], count: 14238, scheduler: running, status: OK, handshakeState: 0, engine: NOT_HANDSHAKING
DEBUG: [HttpClient-1-SelectorManager] [1810s 809ms] SocketTube(1) forwarding error to subscriber: java.net.SocketException: Connection reset
DEBUG: [HttpClient-1-SelectorManager] [1810s 809ms] SSL Reader(SocketTube(1)) onError: java.net.SocketException: Connection reset
DEBUG: [HttpClient-1-SelectorManager] [1810s 809ms] SSL Reader(SocketTube(1)) error java.net.SocketException: Connection reset
DEBUG: [qtp1724731843-13] [1810s 810ms] SocketTube(1) leaving w.onNext Reading: [ops=0, demand=0, stopped=false], Writing: [ops=0, demand=0]
DEBUG: [qtp1724731843-13] [1810s 810ms] SSL Writer(SocketTube(1)) upstreamWindowUpdate, downstreamQueueSize:0, upstreamWindow:0
DEBUG: [qtp1724731843-13] [1810s 810ms] SSL Writer(SocketTube(1)) requesting 1
DEBUG: [qtp1724731843-13] [1810s 810ms] SSLTube(SocketTube(1)) request: n=1
DEBUG: [qtp1724731843-13] [1810s 810ms] AsyncSSLConnection(SSLTube(SocketTube(1))) HttpPublisher: got request of 1 from SSLTube(SocketTube(1))
DEBUG: [qtp1724731843-13] [1810s 810ms] Http2Connection(SSLTube(SocketTube(1)))/Stream(19) trySend: request 1
DEBUG: [qtp1724731843-13] [1810s 811ms] Http2Connection(SSLTube(SocketTube(1)))/Stream(19) RequestSubscriber: onComplete
java.net.SocketException: Connection reset
at java.base/sun.nio.ch.SocketChannelImpl.throwConnectionReset(SocketChannelImpl.java:345)
at java.base/sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:376)
at java.net.http/jdk.internal.net.http.SocketTube.readAvailable(SocketTube.java:1153)
at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$InternalReadSubscription.read(SocketTube.java:821)
at java.net.http/jdk.internal.net.http.SocketTube$SocketFlowTask.run(SocketTube.java:175)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:198)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:271)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:224)
at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$InternalReadSubscription.signalReadable(SocketTube.java:763)
at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$ReadEvent.signalEvent(SocketTube.java:941)
1 个解决方案
解决方案1
2 已采纳 2020-08-30 15:38:37
Using a for loop I started sending requests every i minutes starting a 1 minute.使用for循环，我开始发送请求每隔i分钟开始1分钟。 This is what I got at 6 minutes:这是我在 6 分钟时得到的：
Sleeping for 360000
Request sent:2020-08-30T16:20:29.467902
Exception caught:2020-08-30T16:20:29.492103
java.io.IOException: Connection reset
at java.net.http/jdk.internal.net.http.HttpClientImpl.send(HttpClientImpl.java:576)
at java.net.http/jdk.internal.net.http.HttpClientFacade.send(HttpClientFacade.java:119)
at Main.main(Main.java:207)
Caused by: java.net.SocketException: Connection reset
at java.base/sun.nio.ch.SocketChannelImpl.throwConnectionReset(SocketChannelImpl.java:345)
at java.base/sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:376)
at java.net.http/jdk.internal.net.http.SocketTube.readAvailable(SocketTube.java:1153)
at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$InternalReadSubscription.read(SocketTube.java:821)
at java.net.http/jdk.internal.net.http.SocketTube$SocketFlowTask.run(SocketTube.java:175)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:198)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:271)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:224)
at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$InternalReadSubscription.signalReadable(SocketTube.java:763)
at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$ReadEvent.signalEvent(SocketTube.java:941)
at java.net.http/jdk.internal.net.http.SocketTube$SocketFlowEvent.handle(SocketTube.java:245)
at java.net.http/jdk.internal.net.http.HttpClientImpl$SelectorManager.handleEvent(HttpClientImpl.java:968)
at java.net.http/jdk.internal.net.http.HttpClientImpl$SelectorManager.lambda$run$3(HttpClientImpl.java:923)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1510)
at java.net.http/jdk.internal.net.http.HttpClientImpl$SelectorManager.run(HttpClientImpl.java:923)
java.io.IOException: Connection reset
at java.net.http/jdk.internal.net.http.HttpClientImpl.send(HttpClientImpl.java:576)
at java.net.http/jdk.internal.net.http.HttpClientFacade.send(HttpClientFacade.java:119)
at Main.main(Main.java:207)
Caused by: java.net.SocketException: Connection reset
at java.base/sun.nio.ch.SocketChannelImpl.throwConnectionReset(SocketChannelImpl.java:345)
at java.base/sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:376)
at java.net.http/jdk.internal.net.http.SocketTube.readAvailable(SocketTube.java:1153)
at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$InternalReadSubscription.read(SocketTube.java:821)
at java.net.http/jdk.internal.net.http.SocketTube$SocketFlowTask.run(SocketTube.java:175)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:198)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:271)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:224)
at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$InternalReadSubscription.signalReadable(SocketTube.java:763)
at java.net.http/jdk.internal.net.http.SocketTube$InternalReadPublisher$ReadEvent.signalEvent(SocketTube.java:941)
at java.net.http/jdk.internal.net.http.SocketTube$SocketFlowEvent.handle(SocketTube.java:245)
at java.net.http/jdk.internal.net.http.HttpClientImpl$SelectorManager.handleEvent(HttpClientImpl.java:968)
at java.net.http/jdk.internal.net.http.HttpClientImpl$SelectorManager.lambda$run$3(HttpClientImpl.java:923)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1510)
at java.net.http/jdk.internal.net.http.HttpClientImpl$SelectorManager.run(HttpClientImpl.java:923)
This led me to finding this issue which explains that the problem is caused by the default AWS NAT Gateway behaviour.这让我发现了这个问题，它解释了这个问题是由默认的 AWS NAT 网关行为引起的。 From the docs :从文档：
Timeout behavior超时行为
When a connection times out, a NAT gateway returns an RST packet to any resources behind the NAT gateway that attempt to continue the connection (it does not send a FIN packet).
Which I can see as the last event in the tcpdump:我可以将其视为 tcpdump 中的最后一个事件：
IP 111.11.11.11.https > ip-11-111-11-11.eu-west-1.compute.internal.11111: Flags [R], seq 4144024018, win 637, length 0
Outside of AWS, I get the FIN packet:在 AWS 之外，我得到了 FIN 数据包：
IP 111.11.11.11.https > ip-11-111-11-11.eu-west-1.compute.internal.11111: Flags [F.], seq 5972, ack 7484, win 86, length 0
I tried setting jdk.httpclient.keepalive.timeout based on this article but it does not resolve the issue.我尝试根据这篇文章设置jdk.httpclient.keepalive.timeout但它没有解决问题。 Apache it is.是阿帕奇。
Here's another related thread dating back to 2016.这是另一个可追溯到 2016 年的相关主题。
Update更新
I got to thinking, Apache is coming out clean because it isn't using pooling out-the-box.我开始思考，Apache 是干净的，因为它没有使用开箱即用的池。 I discovered org.apache.http.impl.conn.PoolingHttpClientConnectionManager and set about reproducing the problem.我发现了org.apache.http.impl.conn.PoolingHttpClientConnectionManager并着手重现该问题。 It blows up too:也炸了：
Exception in thread "main" javax.net.ssl.SSLException: Connection reset
at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:127)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:325)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:268)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:263)
at java.base/sun.security.ssl.SSLSocketImpl.handleException(SSLSocketImpl.java:1654)
at java.base/sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:1038)
at org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:137)
at org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:153)
at org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:280)
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:138)
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:56)
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:259)
at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:163)
at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:157)
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:273)
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:272)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
at Main.main(Main.java:226)
Suppressed: java.net.SocketException: Broken pipe
at java.base/sun.nio.ch.NioSocketImpl.implWrite(NioSocketImpl.java:420)
at java.base/sun.nio.ch.NioSocketImpl.write(NioSocketImpl.java:440)
at java.base/sun.nio.ch.NioSocketImpl$2.write(NioSocketImpl.java:826)
at java.base/java.net.Socket$SocketOutputStream.write(Socket.java:1052)
at java.base/sun.security.ssl.SSLSocketOutputRecord.encodeAlert(SSLSocketOutputRecord.java:82)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:356)
... 22 more
Caused by: java.net.SocketException: Connection reset
at java.base/sun.nio.ch.NioSocketImpl.implRead(NioSocketImpl.java:323)
at java.base/sun.nio.ch.NioSocketImpl.read(NioSocketImpl.java:350)
at java.base/sun.nio.ch.NioSocketImpl$1.read(NioSocketImpl.java:803)
at java.base/java.net.Socket$SocketInputStream.read(Socket.java:982)
at java.base/sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRecord.java:457)
at java.base/sun.security.ssl.SSLSocketInputRecord.bytesInCompletePacket(SSLSocketInputRecord.java:68)
at java.base/sun.security.ssl.SSLSocketImpl.readApplicationRecord(SSLSocketImpl.java:1411)
at java.base/sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:1022)
... 18 more
My conclusion is that the AWS NAT gateway is doing the wrong thing.我的结论是 AWS NAT 网关做错了事情。
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