mudroom 0.1.2

A TUI client and server for multiplayer text adventure games.
Documentation 
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use tokio::net::UdpSocket;

use super::DiscoveredServer;

const MAGIC: &[u8] = b"mdrm";
const DISCOVERY_PORT: u16 = 7878;

pub struct DiscoveryServer {
    port: u16,
    name: Option<String>,
}

impl DiscoveryServer {
    pub fn new(http_port: u16, name: Option<String>) -> Self {
        Self {
            port: http_port,
            name,
        }
    }

    pub async fn run(self) -> Result<(), Box<dyn std::error::Error>> {
        let socket = UdpSocket::bind(format!("0.0.0.0:{DISCOVERY_PORT}")).await?;
        let mut buf = [0u8; 64];

        loop {
            let (len, peer) = socket.recv_from(&mut buf).await?;
            if len >= MAGIC.len() && &buf[..MAGIC.len()] == MAGIC {
                let response = DiscoveredServer {
                    host: peer.ip().to_string(),
                    port: self.port,
                    name: self.name.clone(),
                };
                let response_str = serde_json::to_string(&response)?;
                socket.send_to(response_str.as_bytes(), peer).await?;
            }
        }
    }
}