I want to set-up SSL on my GRPC server. Here is what I'm doing:
File certChain = new File("conf/server.crt");
File privateKey = new File("conf/pkcs8_key.pem");
Server server = NettyServerBuilder.forPort(8080)
.useTransportSecurity(certChain, privateKey)
.addService(new HelloWorldService())
.build();
*I am getting following error stack:*
Exception in thread "main" java.lang.IllegalArgumentException: Jetty ALPN/NPN
has not been properly configured.
at io.grpc.netty.GrpcSslContexts.selectApplicationProtocolConfig(
GrpcSslContexts.java:162)
at io.grpc.netty.GrpcSslContexts.configure(GrpcSslContexts.java:136)
at io.grpc.netty.GrpcSslContexts.configure(GrpcSslContexts.java:124)
at io.grpc.netty.GrpcSslContexts.forServer(GrpcSslContexts.java:104)
at io.grpc.netty.NettyServerBuilder.useTransportSecurity(NettyServerBuilder
.java:404)
at server.MyServer.main(MyServer.java:22)
Caused by: java.lang.ClassNotFoundException: org/eclipse/jetty/alpn/ALPN
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at io.grpc.netty.JettyTlsUtil.isJettyAlpnConfigured(JettyTlsUtil.java:34)
at io.grpc.netty.GrpcSslContexts.selectApplicationProtocolConfig(
GrpcSslContexts.java:153)
... 5 more
*Here is my gradle dependency block:*
dependencies {
compile("io.grpc:grpc-netty:1.7.0")
compile("io.grpc:grpc-protobuf:1.7.0")
compile("io.grpc:grpc-stub:1.7.0")
compile group: 'io.netty', name: 'netty-handler', version: '4.1.16.Final'
compile group: 'io.netty', name: 'netty-tcnative-boringssl-static', version
: '2.0.6.Final'
compile group: 'com.google.gradle', name: 'osdetector-gradle-plugin',
version: '1.2.1'
}
Grpc doesn't think I have OpenSSL as SSLProvider available.
private static SslProvider defaultSslProvider() {
return OpenSsl.isAvailable() ? SslProvider.OPENSSL : SslProvider.JDK;
}
Yet, for OpenSSL to be available, I need *netty-tcnative-boringssl-static *on
my classpath. Which I have.
Even with JDK as SSLProvider, I don't understand why can't it load class in
this grpc internal method:
static synchronized boolean isJettyAlpnConfigured() {
try {
Class.forName("org.eclipse.jetty.alpn.ALPN", true, null);
return true;
} catch (ClassNotFoundException e) {
jettyAlpnUnavailabilityCause = e;
return false;
}
}
I do have ALPN in my classpath, as well.
Any help is appreciated!!
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