jmeter HTTP2请求示例在Jmeter4、Java 10没有客户端处理器的情况下崩溃

Question

我无法使用Jmeter 4.0创建HTTP2请求。 我已经安装了最新的JDK和HTTP/2协议采样器插件

我还注意到：penJDK8ClientALPNProcessor@e23ec5a不适用于java 10.0.2“ 尝试使用Java9，但我得到了同样的结果

PS：我已经尝试添加JVM_ARGS=

完整的堆栈跟踪是：

java.util.concurrent.ExecutionException: java.lang.IllegalStateException: No Client ALPNProcessors!
    at org.eclipse.jetty.util.FuturePromise.get(FuturePromise.java:138)
    at com.blazemeter.jmeter.http2.sampler.HTTP2Connection.connect(HTTP2Connection.java:65)
    at com.blazemeter.jmeter.http2.sampler.HTTP2Request.setConnection(HTTP2Request.java:247)
    at com.blazemeter.jmeter.http2.sampler.HTTP2Request.sample(HTTP2Request.java:121)
    at com.blazemeter.jmeter.http2.sampler.HTTP2Request.sample(HTTP2Request.java:107)
    at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:490)
    at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:416)
    at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:250)
    at java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalStateException: No Client ALPNProcessors!
    at org.eclipse.jetty.alpn.client.ALPNClientConnectionFactory.<init>(ALPNClientConnectionFactory.java:57)
    at org.eclipse.jetty.http2.client.HTTP2Client.lambda$doStart$1(HTTP2Client.java:155)
    at org.eclipse.jetty.http2.client.HTTP2Client$ClientSelectorManager.newConnection(HTTP2Client.java:438)
    at org.eclipse.jetty.io.ManagedSelector.createEndPoint(ManagedSelector.java:222)
    at org.eclipse.jetty.io.ManagedSelector.access$1500(ManagedSelector.java:60)
    at org.eclipse.jetty.io.ManagedSelector$CreateEndPoint.run(ManagedSelector.java:825)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:754)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:672)
    ... 1 more
    Suppressed: java.lang.IllegalStateException: org.eclipse.jetty.alpn.java.client.OpenJDK8ClientALPNProcessor@e23ec5a not applicable for java 10.0.2
        at org.eclipse.jetty.alpn.java.client.OpenJDK8ClientALPNProcessor.init(OpenJDK8ClientALPNProcessor.java:41)
        at org.eclipse.jetty.alpn.client.ALPNClientConnectionFactory.<init>(ALPNClientConnectionFactory.java:77)
        ... 8 more

Answer 1

调查

penJDK8ClientALPNProcessor

我的期望是，你必须使用Java 8 SE才能让插件工作

参考资料：

• HTTP/2 - How to get ready for the future
• The New HTTP/2 Plugin for JMeter - The Complete Guide

Answer 2

使用码头9.4.19。v20190610：

    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-alpn-java-client</artifactId>
    </dependency>
    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-alpn-conscrypt-client</artifactId>
    </dependency>

Answer 3

默认的HTTP/2 Sampler安装使用依赖项

Install library: http2-client
Install library: jetty-alpn-openjdk8-client
Install library: jetty-alpn-client
Install library: http2-common
Install library: http2-hpack
Install library: jetty-io
Install library: jetty-http
Install library: jetty-util
Install plugin: bzm-http2 1.2

此依赖项列表对于Java 9+无效

特别是，jetty-alpn-openjdk8-client依赖项无效，不适合Java 9+。 对于Java 9+，应该使用jetty-alpn-java-client

历史：

早在Java8时代，就需要支持HTTP/2，这需要TLS的ALPN层

Java 8没有对ALPN的正式支持，因此Jetty项目维护了JVM中核心SSL层的JVM -Xbootclasspath/p:<path-to-alpn-boot.jar>替换，以允许使用ALPN

这是JVM本身没有提供的自定义API

https://www.eclipse.org/jetty/documentation/current/alpn-chapter.html

Jetty之外的其他项目也开始使用该API

当Java9网络讨论开始时，有人要求将ALPN支持烘焙到JVM中

openjdk的这一努力成为了ALPN的官方API

这个新的官方API与Java8API不同

简而言之，您必须为正在使用的JVM使用适当的API层

如果您希望获得支持，请在jmeter-plugins forum上打开一个新主题（请随时参考此答案）