49 lines
928 B
Go
49 lines
928 B
Go
package main
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import (
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"context"
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"log"
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"net"
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"google.golang.org/grpc"
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"google.golang.org/grpc/reflection"
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pb "lume-grpc/ping"
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)
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const (
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port = ":50051"
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)
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type server struct {
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pb.UnimplementedPingServer
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}
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func Reverse(s string) string {
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runes := []rune(s)
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for i, j := 0, len(runes)-1; i < j; i, j = i+1, j-1 {
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runes[i], runes[j] = runes[j], runes[i]
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}
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return string(runes)
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}
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func (s *server) Ping(ctx context.Context, req *pb.PingRequest) (*pb.PingResponse, error) {
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log.Printf("Received: %v", req.Data)
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return &pb.PingResponse{Data: Reverse(req.Data), Seq: req.Seq}, nil
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}
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func main() {
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lis, err := net.Listen("tcp", port)
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if err != nil {
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log.Fatalf("failed to listen: %v", err)
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}
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s := grpc.NewServer()
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pb.RegisterPingServer(s, &server{})
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log.Printf("server listening at %v", lis.Addr())
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reflection.Register(s)
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if err := s.Serve(lis); err != nil {
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log.Fatalf("failed to serve: %v", err)
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}
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}
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