restructure folders

auth/cookie-session/Cargo.toml

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+[package]
+name = "cookie-session"
+version = "1.0.0"
+edition = "2021"
+
+[dependencies]
+actix-web = "4.0.0-beta.21"
+actix-session = "0.5.0-beta.7"
+log = "0.4"
+env_logger = "0.9.0"

auth/cookie-session/README.md

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+## Cookie session example
+
+```sh
+cd session/cookie-session
+cargo run
+# Starting http server: 127.0.0.1:8080
+```

auth/cookie-session/src/main.rs

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+//! Example of cookie based session
+//! Session data is stored in cookie, it is limited to 4kb
+//!
+//! [Redis session example](https://github.com/actix/examples/tree/master/redis-session)
+//!
+//! [User guide](https://actix.rs/docs/middleware/#user-sessions)
+
+use actix_session::{CookieSession, Session};
+use actix_web::{middleware::Logger, web, App, HttpRequest, HttpServer, Result};
+
+/// simple index handler with session
+async fn index(session: Session, req: HttpRequest) -> Result<&'static str> {
+    log::info!("{:?}", req);
+
+    // RequestSession trait is used for session access
+    let mut counter = 1;
+    if let Some(count) = session.get::<i32>("counter")? {
+        log::info!("SESSION value: {}", count);
+        counter = count + 1;
+        session.insert("counter", counter)?;
+    } else {
+        session.insert("counter", counter)?;
+    }
+
+    Ok("welcome!")
+}
+
+#[actix_web::main]
+async fn main() -> std::io::Result<()> {
+    std::env::set_var("RUST_LOG", "actix_web=info");
+    env_logger::init();
+    log::info!("Starting http server: 127.0.0.1:8080");
+
+    HttpServer::new(|| {
+        App::new()
+            // enable logger
+            .wrap(Logger::default())
+            // cookie session middleware
+            .wrap(CookieSession::signed(&[0; 32]).secure(false))
+            .service(web::resource("/").to(index))
+    })
+    .bind(("127.0.0.1", 8080))?
+    .run()
+    .await
+}