initial version that works as proxy for hardcoded link

.gitignore

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+/target
+.vscode

Cargo.toml

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+[package]
+name = "ics-proxy"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+actix-web = "3"
+reqwest = { version = "0.11", features = ["blocking"] }

src/main.rs

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+use actix_web::{get, App, HttpResponse, HttpServer, Responder};
+
+#[get("/events.ics")]
+async fn hello() -> impl Responder {
+    let res = match reqwest::blocking::get("https://cloud.timeedit.net/uu/web/schema/ri6QX6089X8061QQ88Z4758Z08y37424838828461554904Y684XX09894Q8721784ZnX6503.ics") {
+        Ok(r) => match r.text() {
+            Ok(res) => res,
+            Err(_) => "".to_string(),
+        },
+        Err(_) => "".to_string(),
+    };
+
+    HttpResponse::Ok().content_type("text/calendar").body(res)
+}
+
+#[actix_web::main]
+async fn main() -> std::io::Result<()> {
+    HttpServer::new(|| App::new().service(hello))
+        .bind("127.0.0.1:8080")?
+        .run()
+        .await
+}