Thanks! I was under the impression that *GRPC_ARG_SERVICE_CONFIG *is already including it to the name resolver. I was aware of the client side configuration but it seems like its primary purpose is for debugging/testing. How can I set it then on the server side. Does gRPC provide API to interact with the name resolver? It's pretty hard to get information about this topic, given my very limited knowledge about this topic.
best, . On Tuesday 12 December 2023 at 22:28:03 UTC+1 Mark D. Roth wrote: > The service config is not sent by the gRPC server. It cannot be done that > way, because the service config sets parameters that are needed on the > client before the client has contacted any server. Instead, the service > config is intended to be returned to the client via the name resolver. > There is also a local API that you can use to have the client application > set the default service config directly. > > For details, see > https://github.com/grpc/grpc/blob/master/doc/service_config.md. > > On Monday, December 11, 2023 at 2:08:52 PM UTC-8 D Dob wrote: > >> Hey all, >> >> I'm having a hard time to set the service_config on my server side and >> have it received by a client. I'm testing it in a small playground project >> and am currently out of ideas in how to get this working. Rough project >> setup and findings: >> >> OS: linux, gRPC: v.160, v.1.58 >> >> *Server:* >> ~~~ >> const auto serviceConfig = readFile("service_config.json"); >> builder.AddChannelArgument(GRPC_ARG_SERVICE_CONFIG, *serviceConfig); >> >> *Client:* >> >> *~~~* >> const auto channel = grpc::CreateChannel(Address.data(), >> grpc::InsecureChannelCredentials()); >> std::cout << std::format("Server config: \n{}\n", >> channel->GetServiceConfigJSON()); >> Client client(channel); >> client.sstream(10); >> >> *Client c-ares logs:* >> [polling resolver 0x55eb2c40a410] request complete >> >> [polling resolver 0x55eb2c40a410] returning result: addresses=<2 >> addresses>, service_config=<null> >> chand=0x55eb2c406d80: got resolver result >> >> chand=0x55eb2c406d80: resolver returned no service config. Using default >> service config for channel. >> chand=0x55eb2c406d80: using service config: "{}" >> >> As to my understanding setting it via *GRPC_ARG_SERVICE_CONFIG *should >> be all it >> takes. Logs from c-ares look fine in general but it still can't find the >> service_config. I've been >> playing around with various settings but no luck :( >> >> Didn't want to pollute the chat here: >> client logs: https://pastebin.com/sFq8FyWa >> server logs: https://pastebin.com/HA54iAAw >> relevant code: https://pastebin.com/u6bigcAj >> >> Any help or pointer to an example/test would be greatly appreciated. >> Maybe i've just not understood something >> >> best, >> >> Dennis >> > -- You received this message because you are subscribed to the Google Groups "grpc.io" group. To unsubscribe from this group and stop receiving emails from it, send an email to grpc-io+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/b47716dd-4bec-4998-8d23-6857a794ca8an%40googlegroups.com.
