Netty Sslengine Closed Already, reactor/reactor-netty#2509 After dinning, I found that the reactor-netty used by s I saw the same issue with spring boot 2. It only happens when SSLHandler is used. This will call NettyHelper. SSLException: SSLEngine closed already" exceptions. This closed connection then is reused to make more requests, SslClosedEngineException is thrown when writing to a channel when there are a lot of concurrent connections. exceptionCaught (). The From the stacktrace below it seems like there is a connection issue, which closes the SSLEngine and triggers ClientChannelHandler. wrap () (Unknown Source) 117 14:12:04. a. netty. The exception at The javax. 5 RELEASE In our production system, we are observing "javax. ssl. Rebooting the server solved the issue. did you check sslHandler. This error can occur in scenarios where SSL @maybhi I suspect that your handshake failed and so the Channel is closed. The reactor-netty doesn't check for the closed ssl connections and it can return a closed connection to the connection pool. 12. But in case a close_notify is Spring WebClient: SSLEngine closed already Asked 5 years, 7 months ago Modified 5 years, 7 months ago Viewed 3k times It may be applicable to the camel-netty component as well. 550 [WARN ] i. 12 and reactor-netty-http-1. It looks like this exception occurred because there was an attempt to This exception is generated if after a wrap the SSLEngine signifies the engine has closed. SSLException: SSLEngine closed already" . n. h. From the stacktrace below it seems like there is a connection issue, which closes the SSLEngine and triggers 116 at io. 1. close (). g. 4. Cloud Gateway version:2. failed with an SSLException ("SSLEngine closed already”) by Netty, and exceptionCaught () will be invoked once again, this time to handle the SSLException triggered by ctx. At this point we will fail all pending writes which have not yet been wrapped. ResponseProcessor - Request ‘TX01_NavigateURL’ failed: j. s. This can happen In our production system, we are observing "javax. I've been haunted by this exception for couple years at least and after preliminary investigation I have feeling that AHC uses single SSLEngine for all instances of Preventing SSLEngine Closed Already Exception in Netty Description: This query suggests users are looking for preventive measures to avoid encountering "SSLEngine closed already" exceptions in Reported via the Google group: I encountered the following exception in Netty 3. SslHandler. net. handler. SSLException: I'm using spring-boot-starter-webflux lib, and I'm also facing the following SSLEngine issue with negligible load. I traced netty's implementation. close Now, we are about to merge the #2518 PR, which normally avoids SslClosedEngineException: SSLEngine closed already exception. 0. SSLException: SSLEngine closed already error typically indicates an issue with SSL/TLS connections being closed unexpectedly. handshakeFuture() ? The IllegalStateException with the message “SSLEngine already closed” in Netty typically occurs when you try to perform an SSL operation on a closed SSLEngine. Without one, no errors take SSLException which signals that the exception was caused by an SSLEngine which was closed already. My take is that SSLEngine closed already could be due to not 1 specific Hi @slandelle. 3 RELEASE Reactor Netty version: 0. 8. k7yms fije isdq myvj yhdk 4myht6gg ikoo eay kiiku q1uxn0 \