Hi, is there something else I can add to clarify my issue? Why would the client crash because of the server responding to 2 different calls at the same time (or maybe something else is going on)?
Thank you Le vendredi 16 septembre 2022 à 15:44:17 UTC+2, Christophe Calmejane a écrit : > Hi, > > I'm experimenting gRPC in c++ and I'm not sure what I want to achieve is > possible with the framework. > > I need: > > 1. a single connection btw the client and the server > 2. the client to be able to send multiple requests to the server from > different threads (sync or async is fine) > 3. the server to be able to send messages to the client at any time > (observer pattern) > > So what I implemented is the following: > > I declared a "registerObserver" RPC in my proto file, as well as some > unary commands. > > On the server side (not in callback mode), when I receive the > registerObserver command, I store the grpc::ServerWriter and don't return > from the method until cancelled by the client. Whenever another server > thread needs to send a message to the client, it just uses the stored > ServerWriter. > For the unary commands, I simply handle them inline and return the status > immediately. > > On the client side, I created a grpc::ClientReadReactor to handle the > stream of messages from the server, and sync/async calls for the unary > commands my client wants the server to handle. > > So, it seems to be working nicely, except when the server writes 2 > messages at the same time. Whether an actual write call using my stored > ServerWriter, or an indirect write when I return a status in a unary > handler. > In such a case, the client always crashes in RunInterceptor. > > So my questions are: > > - is it even possible to have the server (and the client) handle > multiple rpc from the same client in parallel, including a streaming call? > - if yes, how to properly achieve this? > > > Thanks for your insight, > Chris > -- 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/b227e5fa-e74b-4315-b408-9c9a663a9f16n%40googlegroups.com.
