feat: add actix with rustls

actix_rustls/Cargo.toml

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+[package]
+name = "actix_rustls"
+version = "0.1.0"
+authors = ["Hatter Jiang <jht5945@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rustls = "0.18"
+actix-web = { version = "3.1", features = ["rustls"] }
+

actix_rustls/README.md

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+https://www.mdeditor.tw/pl/pVR6
+
+

actix_rustls/src/main.rs

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+use std::sync::Arc;
+use rustls::ClientHello;
+use rustls::NoClientAuth;
+use rustls::ServerConfig;
+use rustls::ResolvesServerCert;
+use rustls::sign::CertifiedKey;
+use actix_web::App;
+use actix_web::HttpServer;
+use actix_web::get;
+use actix_web::Responder;
+
+struct CustomResolvesServerCert;
+impl ResolvesServerCert for CustomResolvesServerCert {
+    fn resolve(&self, client_hello: ClientHello) -> Option<CertifiedKey> {
+        println!("Request server name: {:?}", client_hello.server_name());
+        None
+    }
+}
+
+#[get("/")]
+async fn index() -> impl Responder {
+    format!("Hello world!")
+}
+
+#[actix_web::main]
+async fn main() -> std::io::Result<()> {
+    let mut config = ServerConfig::new(NoClientAuth::new());
+    config.cert_resolver = Arc::new(CustomResolvesServerCert);
+
+    let listen = "127.0.0.1:8443";
+    println!("Listen at: {}", listen);
+    HttpServer::new(|| App::new().service(index))
+        .bind_rustls(listen, config)?
+        .run()
+        .await
+}