【发布时间】：2015-10-23 19:03:51
【问题描述】：
这里是场景：
- Websocket 服务器已启动
- Tyrus 客户端共享容器已启用
- Tyrus 客户端连接到服务器（一切正常）
- Websocket 服务器重启
- Tyrus 客户端无法连接到服务器并在服务器启动后抛出以下异常：
javax.websocket.DeploymentException: Connection failed
- 如果客户端应用程序重新启动，它可以再次连接到服务器
注意：如果禁用Tyrus client shared container，则不会发生此问题。
堆栈跟踪：
javax.websocket.DeploymentException: Connection failed.
at org.glassfish.tyrus.container.grizzly.client.GrizzlyClientSocket._connect(GrizzlyClientSocket.java:428) ~[tyrus-container-grizzly-client-1.11.jar:?]
at org.glassfish.tyrus.container.grizzly.client.GrizzlyClientSocket.access$000(GrizzlyClientSocket.java:103) ~[tyrus-container-grizzly-client-1.11.jar:?]
at org.glassfish.tyrus.container.grizzly.client.GrizzlyClientSocket$1.call(GrizzlyClientSocket.java:235) ~[tyrus-container-grizzly-client-1.11.jar:?]
at org.glassfish.tyrus.container.grizzly.client.GrizzlyClientSocket$1.call(GrizzlyClientSocket.java:231) ~[tyrus-container-grizzly-client-1.11.jar:?]
at org.glassfish.tyrus.container.grizzly.client.GrizzlyClientSocket.connect(GrizzlyClientSocket.java:249) ~[tyrus-container-grizzly-client-1.11.jar:?]
at org.glassfish.tyrus.container.grizzly.client.GrizzlyClientContainer.openClientSocket(GrizzlyClientContainer.java:95) ~[tyrus-container-grizzly-client-1.11.jar:?]
at org.glassfish.tyrus.client.ClientManager$3$1.run(ClientManager.java:663) ~[tyrus-client-1.11.jar:?]
at org.glassfish.tyrus.client.ClientManager$3.run(ClientManager.java:712) ~[tyrus-client-1.11.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_31]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_31]
at org.glassfish.tyrus.client.ClientManager$SameThreadExecutorService.execute(ClientManager.java:866) ~[tyrus-client-1.11.jar:?]
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112) ~[?:1.8.0_31]
at org.glassfish.tyrus.client.ClientManager.connectToServer(ClientManager.java:511) ~[tyrus-client-1.11.jar:?]
at org.glassfish.tyrus.client.ClientManager.connectToServer(ClientManager.java:373) ~[tyrus-client-1.11.jar:?]
...
Caused by: java.lang.NullPointerException
at org.glassfish.grizzly.nio.RoundRobinConnectionDistributor$SharedIterator.next(RoundRobinConnectionDistributor.java:146) ~[grizzly-framework-2.3.15-gfa.jar:2.3.15-gfa]
at org.glassfish.grizzly.nio.RoundRobinConnectionDistributor.registerChannelAsync(RoundRobinConnectionDistributor.java:101) ~[grizzly-framework-2.3.15-gfa.jar:2.3.15-gfa]
at org.glassfish.grizzly.nio.transport.TCPNIOConnectorHandler.connectAsync(TCPNIOConnectorHandler.java:177) ~[grizzly-framework-2.3.15-gfa.jar:2.3.15-gfa]
at org.glassfish.grizzly.AbstractSocketConnectorHandler.connect(AbstractSocketConnectorHandler.java:91) ~[grizzly-framework-2.3.15-gfa.jar:2.3.15-gfa]
at org.glassfish.grizzly.AbstractSocketConnectorHandler.connect(AbstractSocketConnectorHandler.java:79) ~[grizzly-framework-2.3.15-gfa.jar:2.3.15-gfa]
at org.glassfish.tyrus.container.grizzly.client.GrizzlyClientSocket._connect(GrizzlyClientSocket.java:386) ~[tyrus-container-grizzly-client-1.11.jar:?]
... 41 more
NPE 来自 grizzly 项目文件 RoundRobinConnectionDistributor.java:146 中的 if (runners.length == 1) { 行
private final class SharedIterator implements Iterator {
private final AtomicInteger counter = new AtomicInteger();
@Override
public SelectorRunner next() {
final SelectorRunner[] runners = getTransportSelectorRunners();
if (runners.length == 1) {
return runners[0];
}
return runners[(counter.getAndIncrement() & 0x7fffffff) % runners.length];
}
@Override
public SelectorRunner nextService() {
return next();
}
}
看起来runners 是null。
【问题讨论】：
-
您是否在客户端和服务器之间共享相同的 Grizzly 传输？如果没有 - 您能否创建一个简单的基于 maven 的测试来重现问题？
-
@alexey，你能澄清一下你所说的“同样的灰熊交通工具”是什么意思吗？你的意思是如果两个客户端服务器都使用相同的 Grizzly 版本进行底层 websocket 连接？
-
不完全是，您是否可以创建一个测试用例来重现问题（在 github 上？）？谢谢。
-
@alexey，看起来问题可能出在 Tyrus 代码中。我正在与 Tyrus 团队合作处理这个github.com/tyrus-project/tyrus/pull/170。我希望我有机会为此创建一个测试用例并将其发布在这里。
标签： java websocket grizzly tyrus