echo.go

package main
import (
  “github.com/golang/glog”
  examples “github.com/hadv/grpc”
  “golang.org/x/net/context”
  “google.golang.org/grpc”
  “google.golang.org/grpc/metadata”
)
// Implements of EchoServiceServer
type echoServer struct{}
func newEchoServer() examples.EchoServiceServer {
  return new(echoServer)
}
func (s *echoServer) Echo(ctx context.Context, msg *examples.Message) (*examples.Message, error) {
  glog.Info(msg)
  return msg, nil
}
func (s *echoServer) EchoBody(ctx context.Context, msg *examples.Message) (*examples.Message, error) {
  glog.Info(msg)
  grpc.SendHeader(ctx, metadata.New(map[string]string{
    “foo”: “foo1”,
    “bar”: “bar1”,
  }))
  grpc.SetTrailer(ctx, metadata.New(map[string]string{
    “foo”: “foo2”,
    “bar”: “bar2”,
  }))
  return msg, nil
}