The protocol sequence to use.
The supported protocols include:
- "ncacn_ip_tcp" (TCP/IP protocol)
- "ncacn_spx" (SPX protocol)
- "ncalrpc" (local interprocess call, LPC)
- "ncacn_http" (HTTPS)
- "grpc" (gRPC)
- "grpc-local" (local gRPC)