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Reuse hyper client. (#727) 

Making a new connection on every request is very slow and wasteful, espectially on slower network.

Fix this by reuse a hyper client which shares a connection pool.

I'm able to lower /r/popular loading time from 5s to 1.5s on my machine.
This commit is contained in:
wsy2220 2023-02-26 15:33:55 +08:00 committed by GitHub
parent 5e03d701e4
commit 58fa213be8
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1 changed files with 11 additions and 9 deletions
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20
src/client.rs
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@ -1,16 +1,24 @@
use cached::proc_macro::cached;
use futures_lite::{future::Boxed, FutureExt};
use hyper::{body, body::Buf, client, header, Body, Method, Request, Response, Uri};
use hyper::{body, body::Buf, client, header, Body, Method, Request, Response, Uri, Client};
use libflate::gzip;
use percent_encoding::{percent_encode, CONTROLS};
use serde_json::Value;
use std::{io, result::Result};
use hyper::client::HttpConnector;
use hyper_rustls::HttpsConnector;
use once_cell::sync::Lazy;
use crate::dbg_msg;
use crate::server::RequestExt;
const REDDIT_URL_BASE: &str = "https://www.reddit.com";
static CLIENT: Lazy<Client<HttpsConnector<HttpConnector>>> = Lazy::new(||{
let https = hyper_rustls::HttpsConnectorBuilder::new().with_native_roots().https_only().enable_http1().build();
client::Client::builder().build(https)
});
/// Gets the canonical path for a resource on Reddit. This is accomplished by
/// making a `HEAD` request to Reddit at the path given in `path`.
///
@ -66,11 +74,8 @@ async fn stream(url: &str, req: &Request<Body>) -> Result<Response<Body>, String
// First parameter is target URL (mandatory).
let uri = url.parse::<Uri>().map_err(|_| "Couldn't parse URL".to_string())?;
// Prepare the HTTPS connector.
let https = hyper_rustls::HttpsConnectorBuilder::new().with_native_roots().https_only().enable_http1().build();
// Build the hyper client from the HTTPS connector.
let client: client::Client<_, hyper::Body> = client::Client::builder().build(https);
let client: client::Client<_, hyper::Body> = CLIENT.clone();
let mut builder = Request::get(uri);
@ -123,11 +128,8 @@ fn request(method: &'static Method, path: String, redirect: bool, quarantine: bo
// Build Reddit URL from path.
let url = format!("{}{}", REDDIT_URL_BASE, path);
// Prepare the HTTPS connector.
let https = hyper_rustls::HttpsConnectorBuilder::new().with_native_roots().https_or_http().enable_http1().build();
// Construct the hyper client from the HTTPS connector.
let client: client::Client<_, hyper::Body> = client::Client::builder().build(https);
let client: client::Client<_, hyper::Body> = CLIENT.clone();
// Build request to Reddit. When making a GET, request gzip compression.
// (Reddit doesn't do brotli yet.)