chromium/third_party/protobuf/php/tests/proto/test_service.proto

syntax = "proto3";

package foo;

option php_generic_services = true;

service Greeter {
  rpc SayHello (HelloRequest) returns (HelloReply) {}
  rpc SayHelloAgain (HelloRequest) returns (HelloReply) {}
}

message HelloRequest {
  string name = 1;
}

message HelloReply {
  string message = 1;
}