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.

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