java.lang.IllegalArgumentException：Jetty ALPN/NPN尚未正確配置

Question

獲取java.lang.IllegalArgumentException: Jetty ALPN/NPN has not been properly configured，同時使用gRPC(google pub/sub)發佈/使用來自的消息Kafka。

Answer 1

嘗試在netty-tcnative-boringssl-static上添加運行時依賴項。請參閱gRPC的SECURITY.md。請注意，網絡版本必須隨時間變化;您應該查看特定版本的文檔版本（例如，this is for 1.2.0）。

Answer 2

試過以下方法。

1.  As suggested by google, use jetty container instead of tomcat, this solution works, but in our production, applications deployed on tomcat container. – No from team 
2.  On debugging the gRPC code, found that guava version causing the issue, updated the guava version 18.0, (where in some classes missed in previous versions) , solved the problem , but failed while deploying in CF 
3.  Customized emebed-tomcat-core, and it works fine consistently – but team say no to custom tomcat container. 
4.  Java –jar apm-asset-xxxx.jar – works fine locally, but need to provide a custom command to CF start, didn’t have luxury to change the CF start process. 
5.  Finally, trick, the class loader to use tcnative-boring-ssl, library instead of tomcat-core library at runtime, by providing the following dependency in pom.xml. From past 3 days, this solution is working CF. 

    <dependency> 
    <groupId>org.springframework.boot</groupId> 
    <artifactId>spring-boot-starter-web</artifactId> 
    <exclusions> 
     <exclusion> 
      <groupId>org.hibernate</groupId> 
      <artifactId>*</artifactId> 
     </exclusion> 
     <exclusion> 
      <groupId>org.apache.tomcat.embed</groupId> 
      <artifactId>tomcat-embed-core</artifactId> 
     </exclusion> 
    </exclusions> 
</dependency> 
<dependency> 
    <groupId>org.apache.tomcat.embed</groupId> 
    <artifactId>tomcat-embed-core</artifactId> 
    <scope>provided</scope> 
</dependency> 

6. Maven manifest plugin to promote the tc-native library to the top in the classloader. 

Answer 3

在POM中，嘗試在spring引導依賴關係（依賴關係的順序）之前放置gRPC依賴關係。我這樣做了，問題解決了。例如：

<dependency> 
    <groupId>com.google.cloud</groupId> 
    <artifactId>google-cloud-language</artifactId> 
    <version>0.13.0-beta</version> 
</dependency> 
<dependency> 
    <groupId>org.springframework.boot</groupId> 
    <artifactId>spring-boot-starter-web</artifactId> 
</dependency> 

Answer 4

最後，回到引導類的類路徑的方法。將jetty-alpn.jar作爲前綴引導類路徑，現在它開始在雲代工廠正常工作。

Answer 5

添加與我的JDK版本匹配的ALPN客戶端JAR爲我解決了這個問題。在eclipse中，您需要將jar設置爲tomcat服務器的引導條目。

您可以在這裏找到更多的信息：https://medium.com/@Parithi/jetty-alpn-npn-has-not-been-properly-configured-solution-418417ee6502