Please enable the Google Play Services Dynamic Security Provider. There are a few links to how to do that in our public SECURITY.md <https://github.com/grpc/grpc-java/blob/master/SECURITY.md#tls-on-android>. It's my understanding that every Google property should be using the provider for security reasons, independent of gRPC.
On Tue, Sep 13, 2016 at 4:12 PM, 'Carl Mastrangelo' via grpc.io < grpc-io@googlegroups.com> wrote: > I believe we get our TLS implementation from Google Play Services (as it > is usually the most up to date). Is your version up to date? > > On Friday, September 2, 2016 at 11:01:06 AM UTC-7, 王 梓佳 wrote: >> >> Hi team, >> >> I tested the example TesterOkHttpChannelBuilder.java, it worked for >> android 4.4+ with TLS/ALPN, but I encountered following exception when i >> test it on 4.1.2 TLS/ALPN or NPN. Could you pls give me a clue to resolve >> this issue? >> >> public static ManagedChannel build(String host, int port, >> @Nullable String serverHostOverride, >> boolean useTls, >> @Nullable InputStream testCa, >> @Nullable String androidSocketFactoryTls) >> >> >> >> >> javax.net.ssl.SSLHandshakeException: javax.net.ssl.SSLProtocolException: >> SSL handshake aborted: ssl=0x5f338c30: Failure in SSL library, usually a >> protocol error >> error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake >> failure (external/openssl/ssl/s23_clnt.c:741 0x5805d76a:0x00000000) >> >> >> Thanks, >> Benson >> > -- > You received this message because you are subscribed to the Google Groups " > grpc.io" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to grpc-io+unsubscr...@googlegroups.com. > To post to this group, send email to grpc-io@googlegroups.com. > Visit this group at https://groups.google.com/group/grpc-io. > To view this discussion on the web visit https://groups.google.com/d/ > msgid/grpc-io/a957b824-5d9f-4bf0-9059-846cab32c153%40googlegroups.com > <https://groups.google.com/d/msgid/grpc-io/a957b824-5d9f-4bf0-9059-846cab32c153%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "grpc.io" group. To unsubscribe from this group and stop receiving emails from it, send an email to grpc-io+unsubscr...@googlegroups.com. To post to this group, send email to grpc-io@googlegroups.com. Visit this group at https://groups.google.com/group/grpc-io. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/CA%2B4M1oPaY98%2BYeyspw7SeDaOwJchj3sO9tP-z7M_PPXodrNMdg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
