Hi again,
in case anyone in the future stumbles upon this thread, I "solved" this
problem by disabling the checking of ALPN here
<https://github.com/grpc/grpc/blob/v1.4.x/src/core/lib/security/transport/security_connector.c#L583>.
By commenting out the range from 587 to 596, I can successfully connect
now. I realise this isn't perfect, but the Compose guys wouldn't rebuild
their haproxy to enable ALPN.
I wonder though, how come doesn't the grpc-go implementation have this
check?
Cheers,
Klemen
On Monday, July 31, 2017 at 12:10:26 PM UTC+2, klemen.f...@gmail.com wrote:
>
> Hi,
>
> I'm having a problem connecting to a etcd v3 database with gRPC using SSL
> in C++. I create the grpc::Channel like this:
>
> grpc::CreateChannel(url,
> grpc::SslCredentials(grpc::SslCredentialsOptions{}));
>
> This is the error I get:
> 14.998631627 24325 security_handshaker.c:126] Security handshake
> failed: {"created":"@1501495154.998615545","description":"Cannot check
> peer: missing selected ALPN
> property.","file":"src/core/lib/security/transport/security_connector.c","file_line":591}
> I0731 02:59:14.999175217 24325 subchannel.c:707] Connect
> failed: {"created":"@1501495154.998615545","description":"Cannot check
> peer: missing selected ALPN
> property.","file":"src/core/lib/security/transport/security_connector.c","file_line":591}
> I0731 02:59:14.999456787 24325 subchannel.c:503] Retry in
> 19.652596073 seconds
>
> I also tried using the etcd client supplied by coreos
> <https://github.com/coreos/etcd/tree/master/clientv3>, which uses the
> gRPC-Go and it does work, but also outputs this error:
> grpc: Failed to dial
> portal298-3.etcd-recognition.reveel-technologies.composedb.com:16217:
> connection error: desc = "transport: context canceled"; please retry.
>
> Does anyone have any idea what might be wrong?
>
> Thanks in advance,
> Klemen
>
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