I'm afraid this is outside our area of expertise since this mailing list is just about protocol buffers, but you could try posting your question to the gRPC mailing list here <https://groups.google.com/forum/#!forum/grpc-io>.
On Wed, Sep 5, 2018 at 5:25 PM Desai, Bhavin <[email protected]> wrote: > Hello, I am connecting to a server which has TLS support with SSL certs. I > am getting a SSL Handshake error on *Android* app client. I also use > *useTransportSecurity()* to deal with TLS negotiation type. Is there any > workaround to get away with this error without certificate pinning? > > > > ---- > Caused by: java.lang.RuntimeException: protocol negotiation failed > > at > io.grpc.okhttp.OkHttpProtocolNegotiator.negotiate(OkHttpProtocolNegotiator.java:96) > > at > io.grpc.okhttp.OkHttpProtocolNegotiator$AndroidNegotiator.negotiate(OkHttpProtocolNegotiator.java:147) > > at > io.grpc.okhttp.OkHttpTlsUpgrader.upgrade(OkHttpTlsUpgrader.java:63) > > at > io.grpc.okhttp.OkHttpClientTransport$2.run(OkHttpClientTransport.java:474) > > at > io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123) > > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162) > > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636) > > at java.lang.Thread.run(Thread.java:764) > ---- > > > > And this is how I generate my channel : > > ManagedChannel mChannel = OkHttpChannelBuilder.*forAddress*(host, port) > .useTransportSecurity() > .build(); > > > > > > Appreciate your time and help. > > > > -- > You received this message because you are subscribed to the Google Groups > "Protocol Buffers" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/protobuf. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/protobuf. For more options, visit https://groups.google.com/d/optout.
