1 use tonic::{transport::Server, Request, Response, Status}; 2 3 use hello_world::greeter_server::{Greeter, GreeterServer}; 4 use hello_world::{HelloReply, HelloRequest}; 5 use tonic::codec::CompressionEncoding; 6 7 pub mod hello_world { 8 tonic::include_proto!("helloworld"); 9 } 10 11 #[derive(Default)] 12 pub struct MyGreeter {} 13 14 #[tonic::async_trait] 15 impl Greeter for MyGreeter { 16 async fn say_hello( 17 &self, 18 request: Request<HelloRequest>, 19 ) -> Result<Response<HelloReply>, Status> { 20 println!("Got a request from {:?}", request.remote_addr()); 21 22 let reply = hello_world::HelloReply { 23 message: format!("Hello {}!", request.into_inner().name), 24 }; 25 Ok(Response::new(reply)) 26 } 27 } 28 29 #[tokio::main] 30 async fn main() -> Result<(), Box<dyn std::error::Error>> { 31 let addr = "[::1]:50051".parse().unwrap(); 32 let greeter = MyGreeter::default(); 33 34 println!("GreeterServer listening on {}", addr); 35 36 let service = GreeterServer::new(greeter) 37 .send_compressed(CompressionEncoding::Gzip) 38 .accept_compressed(CompressionEncoding::Gzip); 39 40 Server::builder().add_service(service).serve(addr).await?; 41 42 Ok(()) 43 } 44