Nima HTTP/2 - Writing to closed socket error

[danielkec]

When h2load gets interrupted mid-test, Nima logs errors because of write attempts to closed socket.

h2load -n 10000000000 -t 64 -c 64 -m 1000 https://tfb-server:8081/plaintext

2023.05.22 13:52:20.647 [0x6d40fe0c 0x1f5bee11] Request failed: HttpPrologue[protocol=HTTP, protocolVersion=2.0, method=GET, uriPath=/plaintext, query=, fragment=], cannot send error response, as response already sent
io.helidon.common.http.RequestException: java.io.UncheckedIOException: java.net.SocketException: Socket closed
	at io.helidon.common.http.RequestException$Builder.build(RequestException.java:126)
	at io.helidon.nima.webserver.http.ErrorHandlers.unhandledError(ErrorHandlers.java:201)
	at io.helidon.nima.webserver.http.ErrorHandlers.lambda$handleError$1(ErrorHandlers.java:181)
	at java.base/java.util.Optional.ifPresentOrElse(Optional.java:198)
	at io.helidon.nima.webserver.http.ErrorHandlers.handleError(ErrorHandlers.java:180)
	at io.helidon.nima.webserver.http.ErrorHandlers.runWithErrorHandling(ErrorHandlers.java:118)
	at io.helidon.nima.webserver.http.Filters.filter(Filters.java:77)
	at io.helidon.nima.webserver.http.HttpRouting.route(HttpRouting.java:107)
	at io.helidon.nima.http2.webserver.Http2Stream.handle(Http2Stream.java:383)
	at io.helidon.nima.http2.webserver.Http2Stream.run(Http2Stream.java:265)
	at io.helidon.nima.http2.webserver.Http2Connection$StreamRunnable.run(Http2Connection.java:783)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:577)
	at java.base/java.util.concurrent.ThreadPerTaskExecutor$ThreadBoundFuture.run(ThreadPerTaskExecutor.java:352)
	at java.base/java.lang.VirtualThread.run(VirtualThread.java:305)
	at java.base/java.lang.VirtualThread$VThreadContinuation.lambda$new$0(VirtualThread.java:177)
	at java.base/jdk.internal.vm.Continuation.enter0(Continuation.java:327)
	at java.base/jdk.internal.vm.Continuation.enter(Continuation.java:320)
Caused by: java.lang.RuntimeException: java.io.UncheckedIOException: java.net.SocketException: Socket closed
	at io.helidon.nima.http2.Http2ConnectionWriter.withStreamLock(Http2ConnectionWriter.java:157)
	at io.helidon.nima.http2.Http2ConnectionWriter.writeHeaders(Http2ConnectionWriter.java:104)
	at io.helidon.nima.http2.webserver.Http2ServerResponse.send(Http2ServerResponse.java:107)
	at io.helidon.nima.tests.integration.http2.webserver.CutConnectionTest.plainText(CutConnectionTest.java:84)
	at io.helidon.nima.webserver.http.HttpRouting$RoutingExecutor.doRoute(HttpRouting.java:549)
	at io.helidon.nima.webserver.http.HttpRouting$RoutingExecutor.call(HttpRouting.java:508)
	at io.helidon.nima.webserver.http.HttpRouting$RoutingExecutor.call(HttpRouting.java:486)
	at io.helidon.nima.webserver.http.ErrorHandlers.runWithErrorHandling(ErrorHandlers.java:75)
	... 11 more
Caused by: java.io.UncheckedIOException: java.net.SocketException: Socket closed
	at io.helidon.common.buffers.FixedBufferData.writeTo(FixedBufferData.java:74)
	at io.helidon.common.buffers.CompositeArrayBufferData.writeTo(CompositeArrayBufferData.java:41)
	at io.helidon.common.socket.PlainSocket.write(PlainSocket.java:127)
	at io.helidon.common.socket.SocketWriter.writeNow(SocketWriter.java:67)
	at io.helidon.common.socket.SocketWriterDirect.write(SocketWriterDirect.java:43)
	at io.helidon.nima.http2.Http2ConnectionWriter.noLockWrite(Http2ConnectionWriter.java:173)
	at io.helidon.nima.http2.Http2ConnectionWriter.lambda$writeHeaders$1(Http2ConnectionWriter.java:117)
	at io.helidon.nima.http2.Http2ConnectionWriter.withStreamLock(Http2ConnectionWriter.java:150)
	... 18 more
Caused by: java.net.SocketException: Socket closed
	at java.base/sun.nio.ch.NioSocketImpl.ensureOpenAndConnected(NioSocketImpl.java:163)
	at java.base/sun.nio.ch.NioSocketImpl.beginWrite(NioSocketImpl.java:356)
	at java.base/sun.nio.ch.NioSocketImpl.implWrite(NioSocketImpl.java:401)
	at java.base/sun.nio.ch.NioSocketImpl.write(NioSocketImpl.java:433)
	at java.base/sun.nio.ch.NioSocketImpl$2.write(NioSocketImpl.java:812)
	at java.base/java.net.Socket$SocketOutputStream.write(Socket.java:1120)
	at io.helidon.common.buffers.FixedBufferData.writeTo(FixedBufferData.java:71)
	... 25 more