Go v1.21 KeepAlive change
Set KeepAlive to -1. See https://github.com/grpc/grpc-go/pull/6672, https://github.com/grpc/grpc-go/pull/6834.
Edited by Mikhail Mazurskiy
Set KeepAlive to -1. See https://github.com/grpc/grpc-go/pull/6672, https://github.com/grpc/grpc-go/pull/6834.