mlua-socket 0.2.7

A Rust-native implementation of LuaSocket for mlua.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53

use super::tcp_server::TcpServer;
use mlua::{Error, FromLua, Lua, MultiValue};
use socket2::SockAddr;
use std::net::SocketAddr;

pub(super) fn handle(lua: &Lua, args: MultiValue) -> Result<TcpServer, Error> {
    // Parse args
    let addr = String::from_lua(args[0].clone(), lua)?;
    let port: u16 = u16::from_lua(args[1].clone(), lua)?;
    let sock_addr: SockAddr = {
        let socket_addr: SocketAddr = format!("{addr}:{port}").parse()?;
        socket_addr.into()
    };
    let _backlog = {
        if args.len() >= 3 {
            u16::from_lua(args[2].clone(), lua).map_err(|err| Error::RuntimeError(err.to_string()))?
        } else {
            32_u16
        }
    };

    // Bind
    let tcp = super::tcp4::handle(lua, args)?;
    {
        tcp.socket
            .set_reuse_address(true)
            .map_err(|err| Error::RuntimeError(err.to_string()))?;
        tcp.socket
            .bind(&sock_addr)
            .map_err(|err| Error::RuntimeError(err.to_string()))?;
    }
    Ok(TcpServer { tcp })
}

#[cfg(test)]
mod tests {
    use mlua::Lua;
    use std::error::Error;

    #[test]
    fn bind() -> Result<(), Box<dyn Error>> {
        let lua = Lua::new();
        crate::preload(&lua)?;
        lua.load(
            r#"
                local socket = require('socket.core')
                local server = socket.bind('127.0.0.1', 0)
            "#,
        )
        .exec()?;
        Ok(())
    }
}