Fix 'Cannot drop a runtime' error

Contributors.txt

@@ -6,3 +6,4 @@ ParisLiakos (Paris Liakos, gotham frontend)
 asonix <asonix@asonix.dog> (actix 1.0 update)
 Geobert Quach (on behalf of Isode Ltd.)
 robjtede <robjtede@icloud.com> (actix-web 3.0 update)
+Oleg Chirukhin <oleg@jetstorm.ru>

oxide-auth-actix/examples/actix-example/Cargo.toml

@@ -16,3 +16,4 @@ serde = "1.0"
 serde_json = "1.0"
 url = "2"
 serde_urlencoded = "0.7"
+tokio = "1.16.1"

oxide-auth-actix/examples/actix-example/src/support.rs

@@ -50,21 +50,41 @@ async fn endpoint_impl(
         Some(code) => code.clone(),
     };
 
-    match state.authorize(&code) {
-        Ok(()) => HttpResponse::Found().append_header(("Location", "/")).finish(),
+    let auth_handle = tokio::task::spawn_blocking(move || {
+        let res = state.authorize(&code);
+        res
+    });
+    let auth_result = auth_handle.await.unwrap();
+
+    match auth_result {
+        Ok(()) => {HttpResponse::Found().append_header(("Location", "/")).finish()},
         Err(err) => HttpResponse::InternalServerError().body(format!("{}", err)),
     }
 }
 
 async fn refresh(state: web::Data<Client>) -> impl Responder {
-    match state.refresh() {
+    let refresh_handle = tokio::task::spawn_blocking(move || {
+        let res = state.refresh();
+        res
+    });
+    let refresh_result = refresh_handle.await.unwrap();
+
+    match refresh_result {
         Ok(()) => HttpResponse::Found().append_header(("Location", "/")).finish(),
         Err(err) => HttpResponse::InternalServerError().body(format!("{}", err)),
     }
 }
 
 async fn get_with_token(state: web::Data<Client>) -> impl Responder {
-    let protected_page = match state.retrieve_protected_page() {
+    let html = state.as_html();
+
+    let protected_page_handle = tokio::task::spawn_blocking(move || {
+        let res = state.retrieve_protected_page();
+        res
+    });
+    let protected_page_result = protected_page_handle.await.unwrap();
+
+    let protected_page = match protected_page_result {
         Ok(page) => page,
         Err(err) => return HttpResponse::InternalServerError().body(format!("{}", err)),
     };
@@ -81,7 +101,7 @@ async fn get_with_token(state: web::Data<Client>) -> impl Responder {
         Its contents are:
         <article>{}</article>
         <form action=\"refresh\" method=\"post\"><button>Refresh token</button></form>
-        </main></html>", state.as_html(), protected_page);
+        </main></html>", html, protected_page);
 
     HttpResponse::Ok().content_type("text/html").body(display_page)
 }