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#![feature(type_alias_impl_trait)]
#![allow(incomplete_features)]
use clap::{AppSettings, Clap};
use embassy::executor::{Executor, Spawner};
use embassy::io::AsyncWriteExt;
use embassy::util::Forever;
use embassy_net::*;
use heapless::Vec;
use log::*;
#[path = "../tuntap.rs"]
mod tuntap;
use crate::tuntap::TunTapDevice;
static DEVICE: Forever<TunTapDevice> = Forever::new();
static CONFIG_STATIC: Forever<StaticConfigurator> = Forever::new();
static CONFIG_DYNAMIC: Forever<DhcpConfigurator> = Forever::new();
static NET_RESOURCES: Forever<StackResources<1, 2, 8>> = Forever::new();
#[derive(Clap)]
#[clap(version = "1.0")]
#[clap(setting = AppSettings::ColoredHelp)]
struct Opts {
/// TAP device name
#[clap(long, default_value = "tap0")]
tap: String,
/// use a static IP instead of DHCP
#[clap(long)]
static_ip: bool,
}
#[embassy::task]
async fn net_task() {
embassy_net::run().await
}
#[embassy::task]
async fn main_task(spawner: Spawner) {
let opts: Opts = Opts::parse();
// Init network device
let device = TunTapDevice::new(&opts.tap).unwrap();
// Choose between dhcp or static ip
let config: &'static mut dyn Configurator = if opts.static_ip {
CONFIG_STATIC.put(StaticConfigurator::new(Config {
address: Ipv4Cidr::new(Ipv4Address::new(192, 168, 69, 2), 24),
dns_servers: Vec::new(),
gateway: Some(Ipv4Address::new(192, 168, 69, 1)),
}))
} else {
CONFIG_DYNAMIC.put(DhcpConfigurator::new())
};
let net_resources = StackResources::new();
// Init network stack
embassy_net::init(DEVICE.put(device), config, NET_RESOURCES.put(net_resources));
// Launch network task
spawner.spawn(net_task()).unwrap();
// Then we can use it!
let mut rx_buffer = [0; 4096];
let mut tx_buffer = [0; 4096];
let mut socket = TcpSocket::new(&mut rx_buffer, &mut tx_buffer);
socket.set_timeout(Some(embassy_net::SmolDuration::from_secs(10)));
let remote_endpoint = (Ipv4Address::new(192, 168, 69, 74), 8000);
info!("connecting to {:?}...", remote_endpoint);
let r = socket.connect(remote_endpoint).await;
if let Err(e) = r {
warn!("connect error: {:?}", e);
return;
}
info!("connected!");
loop {
let r = socket.write_all(b"Hello!\n").await;
if let Err(e) = r {
warn!("write error: {:?}", e);
return;
}
}
}
#[no_mangle]
fn _embassy_rand(buf: &mut [u8]) {
use rand_core::{OsRng, RngCore};
OsRng.fill_bytes(buf);
}
static EXECUTOR: Forever<Executor> = Forever::new();
fn main() {
env_logger::builder()
.filter_level(log::LevelFilter::Debug)
.filter_module("async_io", log::LevelFilter::Info)
.format_timestamp_nanos()
.init();
let executor = EXECUTOR.put(Executor::new());
executor.run(|spawner| {
spawner.spawn(main_task(spawner)).unwrap();
});
}
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