在 Android Studio 的主机上运行时需要 GRPC.network 调用的 TLS

Question

I'm trying to do.network calls over GRPC on a host machine (in a unit test in Android Studio), but the GRPC client cannot do TLS handshakes with the server:

Caused by: java.lang.RuntimeException: We can not do TLS handshake on this Android version, please install the Google Play Services Dynamic Security Provider to use TLS

Is there a way to install a TLS provider on the Android Studio host?

Answer 1

gRPC-Java is recommending the use of Play Service Dynamic Security Provider on Android. This ensures your application has an up-to-date OpenSSL library. See more information in gRPC-Java SECURITY.md .

Another option is to use Conscrypt , which you will insert the Conscrypt TLS provider before creating a gRPC channel.

import org.conscrypt.Conscrypt;
import java.security.Security;
...

Security.insertProviderAt(Conscrypt.newProvider(), 1);

Again, there are instructions in gRPC-Java SECURITY.md .

Using Conscrypt may be easier for tests, as it only requires the Conscrypt dependency.