You can set a deadline to your stream. Re-issuing the rpc is not really a problem because a failed read at the client means the rpc is done at the server or failed somehow anyway.
Or you can configure client side channel keep alive by adding channel arguments: GRPC_ARG_KEEPALIVE_TIME_MS and GRPC_ARG_KEEPALIVE_TIMEOUT_MS. See https://github.com/grpc/grpc/blob/a8021572683c4a6e6af59888cf3a000933abe00c/include/grpc/impl/codegen/grpc_types.h#L218 On Monday, December 4, 2017 at 12:22:34 PM UTC-8, csen...@gmail.com wrote: > > Hi, > Can you help me understand how did you overcome this issue. I too have a > client that invokes streaming rpc and it gets blocked in ClientReader::Read. > I cant set a timeout as it would mean the rpc needs to be invoked again > after the timeout. > > I need a way to reestablish the server connection if client gets blocked > in ClientReader::Read. I cannot read the connection state as the call is > blocked. > However Read fails and gets unblocked if > - I kill the server process or unplug the connection between client and > server > But the client gets blocked indefinitely when the server is > shutdown/powered off. > > My code goes like this.... > ClientContext context; > std::unique_ptr<Consumer::Stub> stub_ = Consumer::NewStub(channel); > ThreadEventReader = stub_->GetDataStream(&context, Filter); //rpc call > // blocked read - until stream closed > while (ThreadEventReader->Read(&StreamedData)) > { > cout << "UpdateStream: " << StreamedData.displayvalue() << > endl; > } > > On Wednesday, 25 May 2016 10:29:57 UTC-5, yangya...@gmail.com wrote: >> >> Hi, my version has fail_fast, and I checked the state of channel. When >> server is shutdown, the state is GRPC_CHANNEL_CONNECTING, which helps me >> know server is unavailable. >> Thank you! >> > -- 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 post to this group, send email to grpc-io@googlegroups.com. Visit this group at https://groups.google.com/group/grpc-io. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/3a1006e9-aa06-455e-a80f-835c1744b8d5%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
