rust听说非常的牛逼。

就尝试了一下，找了一个web server 的小demo。

具体代码见下，在编译时发现

cargo  build --release的时候，生成的release的二进制程序跟debug的程序一样大。

file看了一下有debug_info

file target/release/hello
target/release/hello: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=478ff8955688b981a585603b4ab47a2930c6a994, for GNU/Linux 3.2.0, with debug_info, not stripped

于是就搜了一下，在 Cargo.toml中添加一个配置就可以将二进制程序瘦身。

[profile.release]

strip = true

可以看到瘦身后只有355K，之前可以有13MB的。 确实效果非常显著。

ll -h ./target/release/hello
-rwxrwxr-x 2 pcl pcl 355K 1月  30 17:51 ./target/release/hello*

具体过程：

cargo new hello
cd hello

src/main.rs

use std::{
    fs,
    io::{prelude::*, BufReader},
    net::{TcpListener, TcpStream},
};
fn main() {
    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
    for stream in listener.incoming() {
        let stream = stream.unwrap();
        handle_connection(stream);
    }
}
fn handle_connection(mut stream: TcpStream) {
    let buf_reader = BufReader::new(&mut stream);
    let http_request: Vec<_> = buf_reader
        .lines()
        .map(|result| result.unwrap())
        .take_while(|line| !line.is_empty())
        .collect();
    let status_line = "HTTP/1.1 200 OK";
    let contents = fs::read_to_string("hello.html").unwrap();
    let length = contents.len();
    let response =
        format!("{status_line}\r\nContent-Length: {length}\r\n\r\n{contents}");
    stream.write_all(response.as_bytes()).unwrap();
}

本地目录下hello.html

  
    
    
  
  
    
Hello!
    
Hi from Rust
  

Cargo.toml

[package]
name = "hello"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
[profile.release]
strip = true