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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Exception in thread \"main\" java.lang.IllegalArgumentException: Jetty ALPN/NPN has not been properly configured","articleBody":"I am trying to use grpc java to connect to a service.\r\n\r\nJava Version: 1.8\r\nGradle dependencies: \r\n```\r\ndependencies {\r\n\r\n    //GRPC\r\n    compile 'io.grpc:grpc-netty:1.1.2'\r\n    compile 'io.grpc:grpc-protobuf:1.1.2'\r\n    compile 'io.grpc:grpc-stub:1.1.2'\r\n    compile 'io.netty:netty-tcnative-boringssl-static:1.1.33.Fork26'\r\n```\r\n\r\nFull Error log:\r\n\r\n```\r\nException in thread \"main\" java.lang.IllegalArgumentException: Jetty ALPN/NPN has not been properly configured.\r\n\tat io.grpc.netty.GrpcSslContexts.selectApplicationProtocolConfig(GrpcSslContexts.java:159)\r\n\tat io.grpc.netty.GrpcSslContexts.configure(GrpcSslContexts.java:136)\r\n\tat io.grpc.netty.GrpcSslContexts.configure(GrpcSslContexts.java:124)\r\n\tat io.grpc.netty.GrpcSslContexts.forClient(GrpcSslContexts.java:94)\r\n\tat com.ibm.watson.sentimentanalysis.fe.service.pipeline.customization.TestGrpcTrain.getSslContext(TestGrpcTrain.java:158)\r\n\tat com.ibm.watson.sentimentanalysis.fe.service.pipeline.customization.TestGrpcTrain.main(TestGrpcTrain.java:143)\r\n```\r\nat this line in my java grpc client code:\r\n\r\n```\r\npublic static SslContext getSslContext(File certFile) throws SSLException {\r\n        return GrpcSslContexts.forClient()\r\n                .trustManager(certFile)\r\n                .build();\r\n    }\r\n```\r\n\r\nHere's my gradle dependency tree:\r\nhttps://gist.github.com/tripathysa/7966ddb1e3c6751c19e7b9777a5a0419\r\n\r\nTried the troubleshooting guide: Used the same combination of \r\n\r\ngrpc-netty version | netty-handler version | netty-tcnative-boringssl-static version as mentioned here:\r\nhttps://github.com/grpc/grpc-java/blob/master/SECURITY.md#troubleshooting\r\n\r\nBut still getting the error. Any help would be appreciated.\r\n\r\n","author":{"url":"https://github.com/tripathysa","@type":"Person","name":"tripathysa"},"datePublished":"2018-09-12T06:02:21.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/3668/google-cloud-java/issues/3668"}