I'm trying out retool and wanted to try out the gRPC connection but keep getting a
Test connection failed Error: 14 UNAVAILABLE: No connection established
Its the most basic setup
- Host is the server's domain - no scheme, no port, just a domain name
- Port is 443
- Service definition using reflection
- No metadata
- No authentication
- Enable SSL/TLS with full verification
For comparison, with
grpcui <host>:443 I get a working grpcui (which uses reflection) and can send a grpc.health.v1.Health/Check request and receive a response.
What might be going wrong? What else can I check?