Add permissive CORS-layer to the backend

back/Cargo.lock

@@ -939,6 +939,7 @@ dependencies = [
  "serde",
  "sqlx",
  "tokio",
+ "tower-http",
  "tracing-subscriber",
 ]
 
@@ -1575,6 +1576,22 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "tower-http"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e9cd434a998747dd2c4276bc96ee2e0c7a2eadf3cae88e52be55a05fa9053f5"
+dependencies = [
+ "bitflags 2.6.0",
+ "bytes",
+ "http",
+ "http-body",
+ "http-body-util",
+ "pin-project-lite",
+ "tower-layer",
+ "tower-service",
+]
+
 [[package]]
 name = "tower-layer"
 version = "0.3.2"

back/Cargo.toml

@@ -8,4 +8,5 @@ axum = "0.7.5"
 serde = "1.0.204"
 sqlx = { version = "0.7.4", features = ["runtime-tokio", "sqlite"] }
 tokio = { version = "1.38.1", features = ["rt-multi-thread", "macros", "net", "time", "sync"] }
+tower-http = { version = "0.5.2", features = ["cors"] }
 tracing-subscriber = "0.3.18"

back/src/main.rs

@@ -3,6 +3,7 @@ use std::str::FromStr;
 use axum::{
     extract::State, http::StatusCode, routing::post, Json, Router
 };
+use tower_http::cors::CorsLayer;
 
 use sqlx::{Row, sqlite::{SqliteConnectOptions, SqlitePoolOptions}, Pool, Sqlite};
 
@@ -48,6 +49,7 @@ async fn main() {
         .route("/api/echo", post(echo))
         .route("/api/get_counter", post(get_counter))
         .route("/api/set_counter", post(set_counter))
+        .layer(CorsLayer::permissive())
         .with_state(state);
 
     axum::serve(listener, app)