'Python gRPC client working over a secure channel without SSL certificate

I saw below piece of code in a gRPC client that works:

ssl_metadata = grpc.ssl_channel_credentials()
channel = grpc.secure_channel('<my_grpc_server_path>:443', ssl_metadata)

I don't have the server code.

How is a secure channel created without a certificate and how will the server communicate over SSL?

grpc-python

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Solution	Source