Hello, apologies, forgot to mention it in my initial email. I am using the Java implementation of gRPC 1.18.0, Java version 8.
On Wednesday, July 3, 2019 at 8:58:26 PM UTC+3, Zhouyihai Ding wrote: > > What gRPC language are you using? > > On Thursday, June 27, 2019 at 4:56:03 AM UTC-7, ivan topchiisky wrote: >> >> Hello gRPC team, my name is Ivan and I am currently working on a project >> that involves gRPC for client to server communication. So far everything is >> going well and we are glad that choose gRPC, thumbs up for your good work. >> >> Lately I found myself in the following situation and i was hoping you can >> show me the right way forwards. Initially my services were supposed to only >> support unary calls and I wanted to create a mechanism that validates the >> messages before they reach the service logic. That's why I thought using >> interceptors will solve my problem. I created interceptor that returns new >> ForwardingServerCallListener and I overrided the onMessage method so in >> there I validate the incoming message and if it has malformed data, I >> simply call call.sendHeaders, call.sendMessage and call.close to cancel the >> call and return it to the sender. One other feature that this interceptor >> has is, in case of validation failure the delegate() method of the >> ForwardingServerCallListener returns empty(no operation) Listener, so no >> further propagation of the servercall is made. >> For unary calls this so far works as intended, but now I need to support >> streaming as well, and this approach does not seems to work. If a couple of >> messages are being sent over the stream and a malformed one comes, sending >> the headers breaks the server to client stream. And in general i feel for >> streaming this is not the right approach. Can you point me to a solution >> for this problem, validating the incoming messages over a stream with the >> option of canceling a message if it is bad and doing so in interceptor? >> >> Cheers, >> Ivan. >> >> -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/4fb36cb0-76b0-4ee5-98d2-4280856239bb%40googlegroups.com.
