The stream keyword was added in protobuf 3.0. (Version 2.5 is quite old.)
Support for map types and proto3 syntax (which comes with a handful of
language restrictions and semantic changes for messages) were also added in
3.0.
----
*Josh Humphries*
jh...@bluegosling.com
On Thu, Feb 15, 2018 at 4:50 PM, Yanpeng Wu <pengfl...@gmail.com> wrote:
> *helloworld.proto*
>
> syntax = "proto2";
> package helloworld;
>
> // The greeting service definition.
> service Greeter {
> // Sends a greeting
> rpc SayHello (HelloRequest) returns (stream HelloReply) {}
> }
>
> // The request message containing the user's name.
> message HelloRequest {
> optional string name = 1;
> }
>
> // The response message containing the greetings
> message HelloReply {
> optional string message = 1;
> }
>
>
> $../protobuf-2.5.0/bin/protoc -I. --cpp_out=. helloworld.proto
> $ helloworld.proto:7:47: Expected ")".
>
> Furthermore, are there any harms to incorporate grpc-1.8.4 with
> protobuf-2.5.0?
>
> Thanks!
>
>
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