Rust unix domain socket

洪大宇2023-11-21 17:51

先用起来再说

rust 复制代码

use std::io::prelude::*;
use std::os::unix::net::UnixStream;

fn main() {
    let mut stream: UnixStream;
    let mut buffer = vec![0u8; 4096];
    match UnixStream::connect("/tmp/hello.world.serv") {
        Ok(handle) => {
            stream = handle;
            match stream.write_all("cmd=read".as_bytes()) {
                Ok(_) => {
                    println!("send to unix domain socket successfully");
                    match stream.read(&mut buffer) {
                        Ok(_) => {
                            println!("read uds buffer okay");
                            //This step change utf8 code for recv buffer
                            println!("Content:{:?}", String::from_utf8(buffer));
                        }
                        Err(error) => println!("read uds buffer errors {:?}", error),
                    }
                }
                Err(error) => println!("{:?}", error),
            }
        }
        Err(error) => {
            println!("{:?}", error)
        }
    };
}

编写rust 不是看编译时报错，而是更重要的是关注,lsp 返回的语法错误，只要又错误，大概率是不会编译成功的

rust使用了C的连接器，但是丰富了C 的库,从项目中的小组件开始迭代

除非,linux 驱动有crates 否则不建议使用 unsafe 去调用

rust 复制代码

use std::io::prelude::*;
use std::os::unix::net::UnixStream;

#[allow(unused_mut)]
#[allow(non_snake_case)]
fn main() {
    let mut stream: UnixStream;
    let mut buffer = vec![0u8; 4096];
    let mut cmd = ["cmd=para_list", "cmd=read"];
    let mut cmdVec = cmd.to_vec();

    for it in cmdVec.iter_mut() {
        if *it == "cmd=para_list" {
            *it = "cmd=para_all_list";
        } else if it == &"cmd=read" {
            *it = "cmd=read_all_cache";
        }
    }

    println!("new static str vec: {:?}", cmdVec);
    match UnixStream::connect("/tmp/uds.network.serv") {
        Ok(handle) => {
            stream = handle;
            match stream.write_all("cmd=read".as_bytes()) {
                Ok(_) => {
                    println!("send to unix domain socket successfully");
                    match stream.read(&mut buffer) {
                        Ok(_) => {
                            println!("read uds buffer okay");
                            //This step change utf8 code for recv buffer
                            println!("Content:{:?}", String::from_utf8(buffer));
                        }
                        Err(error) => println!("read uds buffer errors {:?}", error),
                    }
                }
                Err(error) => println!("{:?}", error),
            }
        }
        Err(error) => {
            println!("{:?}", error)
        }
    };
}

和python 一样的可用性

也有引用和解引用，但是用起来就比较麻烦

也有指针和原始指针

不考虑复杂的过程宏和装饰器的作用大差不差