You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: grpc_server.rs
    path of file: ./repos/volo/examples/src/compression
    
    the code of the file until where you have to start completion: use std::net::SocketAddr;

use volo_grpc::{
    codec::compression::{
        CompressionEncoding::{Gzip, Identity, Zlib},
        GzipConfig, Level, ZlibConfig,
    },
    server::{Server, ServiceBuilder},
};

pub struct S;

impl volo_gen::proto_gen::hello::Greeter for S {
    async fn say_hello(
        &self,
        req: volo_grpc::Request<volo_gen::proto_gen::hello::HelloRequest>,
    ) -> Result<volo_grpc::Response<volo_gen::proto_gen::hello::HelloReply>, volo_grpc::Status>
    {
        let resp = volo_gen::proto_gen::hello::HelloReply {
            message: format
    
async fn main() {
    let addr: SocketAddr = "[::]:8080".parse().unwrap();
    let addr = volo::net::Address::from(addr);

    Server::new()
        .add_service(
            ServiceBuilder::new(volo_gen::proto_gen::hello::GreeterServer::new(S))
                .send_compressions(vec![
                    Zlib(Some(ZlibConfig {
                        level: Level::fast(),
                    })),
                    Gzip(Some(GzipConfig::default())),
                ])
                .accept_compressions(vec![Gzip(None), Zlib(None), Identity])
                .build(),
        )
        .run(addr)
        .await
        .unwrap();
}