From 0521e15bd573ecc0f59af64ee552a293d3facc2b Mon Sep 17 00:00:00 2001
From: yukang <moorekang@gmail.com>
Date: Fri, 19 Jan 2024 08:44:15 +0800
Subject: [PATCH] Fix RPC cors issue of preflight request

---
 rpc/Cargo.toml    | 2 +-
 rpc/src/server.rs | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/rpc/Cargo.toml b/rpc/Cargo.toml
index 6ff4efd51d..abc6743a4c 100644
--- a/rpc/Cargo.toml
+++ b/rpc/Cargo.toml
@@ -45,7 +45,7 @@ async-trait = "0.1"
 axum = "0.6.20"
 tokio-util = { version = "0.7.3", features = ["codec"] }
 futures-util = { version = "0.3.21" }
-tower-http = { version = "0.3.5", features = ["timeout"] }
+tower-http = { version = "0.3.5", features = ["timeout", "cors"] }
 async-stream = "0.3.3"
 ckb-async-runtime = { path = "../util/runtime", version = "= 0.114.0-pre" }
 
diff --git a/rpc/src/server.rs b/rpc/src/server.rs
index 08550d9730..c0c448a280 100644
--- a/rpc/src/server.rs
+++ b/rpc/src/server.rs
@@ -17,6 +17,7 @@ use std::sync::Arc;
 use std::time::Duration;
 use tokio::net::TcpListener;
 use tokio_util::codec::{FramedRead, FramedWrite, LinesCodec, LinesCodecError};
+use tower_http::cors::CorsLayer;
 use tower_http::timeout::TimeoutLayer;
 
 #[doc(hidden)]
@@ -87,6 +88,8 @@ impl RpcServer {
             .with_channel_size(4)
             .with_pipeline_size(4);
 
+        let cors = CorsLayer::permissive();
+
         // HTTP and WS server.
         let method_router =
             post(handle_jsonrpc::<Option<Session>>).get(handle_jsonrpc_ws::<Option<Session>>);
@@ -94,6 +97,7 @@ impl RpcServer {
             .route("/", method_router.clone())
             .route("/*path", method_router)
             .layer(Extension(Arc::clone(rpc)))
+            .layer(cors)
             .layer(TimeoutLayer::new(Duration::from_secs(30)));
 
         if enable_websocket {