grpc.Client.waitForReady?

[swwilson-bsi]

How can a client wait for a server to be ready? After creating a GrpcTransport, I want to call client.waitForReady. However, client is a private property.

[timostamm]

It can't, at the moment. Could you elaborate why you want to call waitForReady?
Not questioning your motives - I'd like to learn in which cases this would be beneficial.

[swwilson-bsi]

I found that the first rpc method call would time out if the server wasn't ready (still starting up). I tried setting the timeout property of the transport object, but it didn't seem to help. BTW In my case, both client and server are processes on the same machine. The client launches the server.

[timostamm]

Interesting. I've been using retry policies for that purpose (that was not with gRPC though). Being able to wait for a connection independently of calls is nice to have, though.

I think it would be reasonable to expose waitForReady on the transport, similar to what we already do with close:

protobuf-ts/packages/grpc-transport/src/grpc-transport.ts

Lines 311 to 313 in 376f56e

	close(): void {
	this.client.close();
	}

Would you be interested in opening a PR for this feature?

[swwilson-bsi]

Gee. I wouldn't know how to test it. Would you do it?

[timostamm]

Yes. I'll review the PR and publish a pre-release version.