protobuf-2.5.0/bin/protoc doesn't recognize "stream"?

[Yanpeng Wu]

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!

[Josh Humphries]

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

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[Yanpeng Wu]

I see, thanks Josh!

----
Josh Humphries
jh...@bluegosling.com

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