104 lines
2.1 KiB
Rust
104 lines
2.1 KiB
Rust
use std::{
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error::Error,
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path::PathBuf,
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sync::Arc,
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time::Duration,
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};
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use hyper::{
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StatusCode,
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};
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use reqwest::Client;
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use tokio::{
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time::delay_for,
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};
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use crate::http_serde;
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mod file_server;
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const RELAY_URL: &str = "http://127.0.0.1:4000";
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const SERVER_NAME: &str = "alien_wildlands";
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async fn handle_req_resp (
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opt: &Opt,
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client: &Client,
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req_resp: reqwest::Response
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) -> Result <(), Box <dyn Error>> {
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//println! ("Step 1");
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if req_resp.status () != StatusCode::OK {
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// TODO: Error handling
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return Ok (());
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}
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let body = req_resp.bytes ().await?;
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let wrapped_req: http_serde::WrappedRequest = match rmp_serde::from_read_ref (&body)
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{
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Ok (x) => x,
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_ => return Ok (()),
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};
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let (req_id, parts) = (wrapped_req.id, wrapped_req.req);
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let response = file_server::serve_all (&opt.root, parts).await;
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let mut resp_req = client
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.post (&format! ("{}/http_response/{}", RELAY_URL, req_id))
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.header (crate::PTTH_MAGIC_HEADER, base64::encode (rmp_serde::to_vec (&response.parts).unwrap ()));
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if let Some (body) = response.body {
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resp_req = resp_req.body (body);
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}
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//println! ("Step 6");
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if let Err (e) = resp_req.send ().await {
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println! ("Err: {:?}", e);
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}
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Ok (())
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}
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pub struct Opt {
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pub root: PathBuf,
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}
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pub async fn main (opt: Opt) -> Result <(), Box <dyn Error>> {
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let client = Arc::new (Client::new ());
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let opt = Arc::new (opt);
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let mut backoff_delay = 0;
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loop {
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if backoff_delay > 0 {
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delay_for (Duration::from_millis (backoff_delay)).await;
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}
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let req_req = client.get (&format! ("{}/http_listen/{}", RELAY_URL, SERVER_NAME));
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let req_resp = match req_req.send ().await {
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Err (e) => {
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println! ("Err: {:?}", e);
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backoff_delay = backoff_delay * 2 + 500;
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continue;
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},
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Ok (r) => {
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backoff_delay = 0;
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r
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},
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};
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// Spawn another task for each request so we can
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// immediately listen for the next connection
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let client = client.clone ();
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let opt = opt.clone ();
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tokio::spawn (async move {
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match handle_req_resp (&opt, &client, req_resp).await {
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_ => (),
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}
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});
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}
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}
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