使用 go protoc --go_out 输出的 *.pb.go文件时报 undefined: proto.ProtoPackageIsVersion3

事情是这样的：我参考go的 grpc 实现 https://grpc.io/docs/quickstart/go/html Download the example The grpc code that was fetched with go get google.golang.org/grpc also contains the examples. They can be found under

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