First HTTPS / SSL request after startup of Wildfly 8.0.0.Final is blocked for many seconds ------------------------------------------------------------------------------------------ Key: WFLY-3252 URL: https://issues.jboss.org/browse/WFLY-3252 Project: WildFly Issue Type: Bug Security Level: Public(Everyone can see) Affects Versions: 8.0.0.Final Environment: Win7, Java 1.7.0_51 and 1.8.0 Reporter: bene.net Priority: Critical Labels: Blocked, HTTPS, JAX-RS, Performance, SSL, Start-Up Attachments: server_keystore.jks, standalone-full.xml The first HTTPS / SSL request after startup of Wildfly 8.0.0.Final is blocked for many seconds. Please note that subsequent requests perform normally. HTTP requests also perform fine. We use curl to call a JAX-RS service (just in case this matters). My first thought was, that we had hit the following bug: https://issues.jboss.org/browse/XNIO-226?jql= However, I can also reproduce the problem with xnio-3.2.2.Final (which contains a fix for bug XNIO-226). So I inserted some logging statements in {code:title=AbstractAcceptingSslChannel.java} System.out.println("calling createSSLEngine..."); long t1 = System.currentTimeMillis(); final SSLEngine engine = sslContext.createSSLEngine(JsseSslUtils.getHostNameNoResolve(peerAddress), peerAddress.getPort()); long t2 = System.currentTimeMillis(); long duration = t2 - t1; System.out.println("createSSLEngine took "+duration+" ms. "); {code} and in {code:title=JsseSslConduitEngine.java} case NEED_TASK: { Runnable task; synchronized (engine) { // run the tasks needed for handshaking while ((task = engine.getDelegatedTask()) != null) { try { System.out.println("calling task.run() in handleHandshake..."); long t1 = System.currentTimeMillis(); task.run(); long t2 = System.currentTimeMillis(); long duration = t2 - t1; System.out.println("task.run() in handleHandshake took "+duration+" ms. "); } catch (Exception e) { throw new IOException(e); } } } // caller should try to wrap/unwrap again return true; } {code} I found out, that sslContext.createSSLEngine in AbstractAcceptingSslChannel.java is quite slow (468ms) but it is not the cause for the blocking request. Instead org.xnio.ssl.JsseSslConduitEngine.handleHandshake(JsseSslConduitEngine.java:512) needs 95 seconds to return!!! Here is the relevant part from my log file: {noformat} INFO ; 2014-04-11 18:29:52,115; [Controller Boot Thread ]; JBAS015874: WildFly 8.0.0.Final "WildFly" started in 6477ms - Started 334 of 386 services (107 services are lazy, passive or on-demand); [org.jboss.as.server.BootstrapListener.done(BootstrapListener.java:93)]; ; INFO ; 2014-04-11 18:30:05,566; [default I/O-3 ]; calling createSSLEngine... ; [org.jboss.stdio.AbstractLoggingWriter.write(AbstractLoggingWriter.java:71)]; ; INFO ; 2014-04-11 18:30:06,035; [default I/O-3 ]; createSSLEngine took 468 ms. ; [org.jboss.stdio.AbstractLoggingWriter.write(AbstractLoggingWriter.java:71)]; ; INFO ; 2014-04-11 18:30:06,066; [default I/O-3 ]; calling task.run() in handleHandshake... ; [org.jboss.stdio.AbstractLoggingWriter.write(AbstractLoggingWriter.java:71)]; ; INFO ; 2014-04-11 18:31:41,128; [default I/O-3 ]; task.run() in handleHandshake took 95061 ms. ; [org.jboss.stdio.AbstractLoggingWriter.write(AbstractLoggingWriter.java:71)]; ; INFO ; 2014-04-11 18:31:41,133; [default I/O-3 ]; calling task.run() in handleHandshake... ; [org.jboss.stdio.AbstractLoggingWriter.write(AbstractLoggingWriter.java:71)]; ; INFO ; 2014-04-11 18:31:41,145; [default I/O-3 ]; task.run() in handleHandshake took 10 ms. ; [org.jboss.stdio.AbstractLoggingWriter.write(AbstractLoggingWriter.java:71)]; ; INFO ; 2014-04-11 18:31:41,573; [default task-1 ]; SecurityFilter received request. ; [de.head.vetsone.rest_ifc.SecurityFilter.filter(SecurityFilter.java:62)]; ; {noformat} Using JConsole I could extract the full stacktrace: Name: default I/O-2 State: RUNNABLE Total blocked: 0 Total waited: 2 Stack trace: {noformat} java.math.BigInteger.oddModPow(BigInteger.java:2700) java.math.BigInteger.modPow(BigInteger.java:2443) java.math.BigInteger.passesMillerRabin(BigInteger.java:1019) java.math.BigInteger.primeToCertainty(BigInteger.java:875) java.math.BitSieve.retrieve(BitSieve.java:203) java.math.BigInteger.largePrime(BigInteger.java:744) java.math.BigInteger.<init>(BigInteger.java:650) org.bouncycastle.crypto.generators.DHParametersHelper.generateSafePrimes(Unknown Source) org.bouncycastle.crypto.generators.DHParametersGenerator.generateParameters(Unknown Source) org.bouncycastle.jce.provider.JDKKeyPairGenerator$DH.generateKeyPair(Unknown Source) sun.security.ssl.DHCrypt.generateDHPublicKeySpec(DHCrypt.java:225) sun.security.ssl.DHCrypt.<init>(DHCrypt.java:101) sun.security.ssl.ServerHandshaker.setupEphemeralDHKeys(ServerHandshaker.java:1350) sun.security.ssl.ServerHandshaker.trySetCipherSuite(ServerHandshaker.java:1194) sun.security.ssl.ServerHandshaker.chooseCipherSuite(ServerHandshaker.java:1002) sun.security.ssl.ServerHandshaker.clientHello(ServerHandshaker.java:724) sun.security.ssl.ServerHandshaker.processMessage(ServerHandshaker.java:213) sun.security.ssl.Handshaker.processLoop(Handshaker.java:925) sun.security.ssl.Handshaker$1.run(Handshaker.java:865) sun.security.ssl.Handshaker$1.run(Handshaker.java:862) java.security.AccessController.doPrivileged(Native Method) sun.security.ssl.Handshaker$DelegatedTask.run(Handshaker.java:1302) - locked sun.security.ssl.SSLEngineImpl@3f3d2d55 org.xnio.ssl.JsseSslConduitEngine.handleHandshake(JsseSslConduitEngine.java:512) - locked sun.security.ssl.SSLEngineImpl@3f3d2d55 org.xnio.ssl.JsseSslConduitEngine.unwrap(JsseSslConduitEngine.java:595) org.xnio.ssl.JsseSslConduitEngine.unwrap(JsseSslConduitEngine.java:543) org.xnio.ssl.JsseSslStreamSourceConduit.read(JsseSslStreamSourceConduit.java:89) org.xnio.conduits.ConduitStreamSourceChannel.read(ConduitStreamSourceChannel.java:127) io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:111) io.undertow.server.protocol.http.HttpOpenListener.handleEvent(HttpOpenListener.java:69) io.undertow.server.protocol.http.HttpOpenListener.handleEvent(HttpOpenListener.java:38) org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) org.xnio.ChannelListeners$10.handleEvent(ChannelListeners.java:291) org.xnio.ChannelListeners$10.handleEvent(ChannelListeners.java:286) org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) org.xnio.ChannelListeners$DelegatingChannelListener.handleEvent(ChannelListeners.java:1092) org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) org.xnio.nio.NioTcpServerHandle.handleReady(NioTcpServerHandle.java:53) org.xnio.nio.WorkerThread.run(WorkerThread.java:531) {noformat}