Small mistake in my mail, the stacktrace is shown clientside NOT 
serverside. 

Jorg

On Thursday, January 26, 2017 at 1:13:07 PM UTC+1, Jorg Heymans wrote:
>
> Hi,
>
> I have a grpc client-server setup using TLS (ClientAuth.REQUIRE) which is 
> working fine. I am now trying to implement service discovery using Spring 
> DiscoveryClient and zookeeper, very much like what was done here for eureka 
> https://gist.github.com/Xorlev/eafce32667931b78fac003f228cedc53#file-eurekanameresolver-java-L51
>  
> . 
>
> Basically in the client I am creating a 
> channel.forTarget("zookeeper://myservice-dev").nameResolverFactory(...).sslContext(...)
>  
> and i get this exception serverside:
>
> Caused by: java.security.cert.CertificateException: No subject alternative 
> DNS name matching myservice-dev found.
> at sun.security.util.HostnameChecker.matchDNS(HostnameChecker.java:204)
> at sun.security.util.HostnameChecker.match(HostnameChecker.java:95)
> at 
> sun.security.ssl.X509TrustManagerImpl.checkIdentity(X509TrustManagerImpl.java:455)
> at 
> sun.security.ssl.X509TrustManagerImpl.checkIdentity(X509TrustManagerImpl.java:436)
> at 
> sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:252)
> at 
> sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:136)
> at 
> io.netty.handler.ssl.ReferenceCountedOpenSslClientContext$ExtendedTrustManagerVerifyCallback.verify(ReferenceCountedOpenSslClientContext.java:223)
>
> It seems that the logical service id i am trying to connect to is used 
> during TLS verification. Is this expected ? Adding this service id in the 
> certificate SubjectAltNames makes things work but that's not a real 
> solution. I have verified that the service discovery works fine without TLS 
> and it does.
>
> Any ideas what could be causing this, is it expected at all ?
>
> Many thanks,
> Jorg
>

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