英文:
Intermittent java.io.IOException: Connection reset (not connection reset by peer) in jdk.internal.net.http.HttpClientImpl.send from inside Amazon EC2
问题
使用在Amazon EC2中的openjdk 14.0.1时，当通过https对外部REST服务进行POST请求时，偶尔会出现java.io.IOException: Connection reset的错误。这种情况在EC2之外是不会发生的。
它在短时间的不活动后发生一次，一旦再次调用REST服务，问题就会解决。反复发生。
这个错误不会在直接通过curl命令对外部REST服务进行访问时发生，只有在JVM内部在短时间的不活动后才会发生。
我一直在关注jdk.internal.net.http.Http2ClientImpl中的连接池问题。我的理论是连接池中可能会选择到一个陈旧的连接，但我没有确凿的证据。
也许是其他原因导致的。可能是什么原因导致了这个问题呢？
与此同时，我已经将HTTP客户端更换为Apache的实现，目前看来一切正常。
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)
在详细调试模式下：
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
...
(后续内容省略，同样的DEBUG信息重复出现)
请注意，这只是您提供的文本的翻译部分，仅包含了错误描述和堆栈跟踪的内容。如果您需要更多翻译或其他帮助，请随时提问。
英文:
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. This does not happen outside of EC2.
It happens once after a short period of inactivity and resolves once the REST service is called again. Rinse repeat.
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.
I've been focusing around the connection pooling in jdk.internal.net.http.Http2ClientImpl. My theory is a stale connection is being picked up from the pool but I have no concrete evidence of this.
Perhaps it's something else. What could be causing this?
In the meantime I've swapped out the HTTP client for the Apache offering and so far, so good.
Stack trace:
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:
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$ReadEvent.signalEvent(SocketTube.java:941)
答案1
得分: 2
使用for循环，我开始每隔i分钟发送请求，从1分钟开始计时。在第6分钟，我得到了以下结果：
Sleeping for 360000
Request sent:2020-08-30T16:20:29.467902
Exception caught:2020-08-30T16:20:29.492103
java.io.IOException: Connection reset
at java.net.http/jdk.internal.net.http.HttpClientImpl.send(HttpClientImpl.java:576)
at java.net.http/jdk.internal.net.http.HttpClientFacade.send(HttpClientFacade.java:119)
at Main.main(Main.java:207)
Caused by: java.net.SocketException: Connection reset
at java.base/sun.nio.ch.SocketChannelImpl.throwConnectionReset(SocketChannelImpl.java:345)
at java.base/sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:376)
at java.net.http/jdk.internal.net.http.SocketTube.readAvailable(SocketTube.java:1153)
at java.net.http/jdk.internal.net.http.SocketTube$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)
这引导我找到了这个问题，解释了问题是由默认的AWS NAT网关行为引起的。来自文档：
超时行为
当连接超时时，NAT网关会向尝试继续连接的NAT网关后面的任何资源返回RST数据包（不会发送FIN数据包）。
我可以在tcpdump中看到这是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
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
我尝试根据这篇文章设置了jdk.httpclient.keepalive.timeout，但问题没有解决。使用Apache则没有问题。
这里还有另一个相关的讨论，追溯到2016年。
更新
我在思考，Apache之所以没有问题，是因为它默认没有使用连接池。我发现了org.apache.http.impl.conn.PoolingHttpClientConnectionManager，并着手复现这个问题。但结果也出现问题：
Exception in thread "main" javax.net.ssl.SSLException: Connection reset
at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:127)
...
Caused by: java.net.SocketException: Connection reset
at java.base/sun.nio.ch.NioSocketImpl.implRead(NioSocketImpl.java:323)
...
我的结论是AWS NAT网关做错了事情。
英文:
Using a for loop I started sending requests every i minutes starting a 1 minute. This is what I got at 6 minutes:
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. From the docs:
Timeout behavior
> 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:
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:
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. Apache it is.
Here's another related thread dating back to 2016.
Update
I got to thinking, Apache is coming out clean because it isn't using pooling out-the-box. I discovered org.apache.http.impl.conn.PoolingHttpClientConnectionManager and set about reproducing the problem. It blows up too:
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.
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论