[iOS] SSL Mutual TLS

[Rob Cecil]

The online Grpc guide for authorization:

https://grpc.io/docs/guides/auth.html

Speaks about SSL/TLS:

• SSL/TLS: gRPC has SSL/TLS integration and promotes the use of SSL/TLS to authenticate the server, and to encrypt all the data exchanged between the client and the server. Optional mechanisms are available for clients to provide certificates for mutual authentication.

Can someone elaborate when Mutual TLS is required in Grpc for iOS and how to configure it ?

Thanks!

[Muxi Yan]

Requirement of mutual TLS is from server's configurations. If it is required by the server, the client can configure it with this function.

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[Rob Cecil]

Muxi, how would a c# server specify mutual TLS ?

Thanks

[Muxi Yan]

Hi Rob, 

I am not familiar with the c# API. CC'ing jtattermusch@ who can definitely help.

[Jan Tattermusch]

I believe what you want is https://github.com/grpc/grpc/blob/b880b796eb7ba0cdf8e61069422afd423d92c53a/src/csharp/Grpc.Core/ServerCredentials.cs#L75

example usage:

https://github.com/grpc/grpc/blob/b880b796eb7ba0cdf8e61069422afd423d92c53a/src/csharp/Grpc.IntegrationTesting/SslCredentialsTest.cs#L52  

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Jan