6 files changed, 13 insertions, 8 deletions
diff --git a/jsonrpc/README.md b/jsonrpc/README.md
index 03f5ace..5fc6847 100644
--- a/jsonrpc/README.md
+++ b/jsonrpc/README.md
@@ -22,7 +22,8 @@ use serde_json::Value;
 use smol::stream::StreamExt;
 
 use karyon_jsonrpc::{
-    Error, Server, Client, rpc_impl, rpc_pubsub_impl, SubscriptionID, ArcChannel
+    Error, Server, Client, rpc_impl, rpc_pubsub_impl, message::SubscriptionID, 
+    ArcChannel
 };
 
 struct HelloWorld {}
diff --git a/jsonrpc/examples/pubsub_server.rs b/jsonrpc/examples/pubsub_server.rs
index 4b77c45..bae5b37 100644
--- a/jsonrpc/examples/pubsub_server.rs
+++ b/jsonrpc/examples/pubsub_server.rs
@@ -4,7 +4,9 @@ use serde::{Deserialize, Serialize};
 use serde_json::Value;
 
 use karyon_core::async_util::sleep;
-use karyon_jsonrpc::{rpc_impl, rpc_pubsub_impl, ArcChannel, Error, Server, SubscriptionID};
+use karyon_jsonrpc::{
+    message::SubscriptionID, rpc_impl, rpc_pubsub_impl, ArcChannel, Error, Server,
+};
 
 struct Calc {}
 
diff --git a/jsonrpc/src/client/mod.rs b/jsonrpc/src/client/mod.rs
index 0666ee0..05479f9 100644
--- a/jsonrpc/src/client/mod.rs
+++ b/jsonrpc/src/client/mod.rs
@@ -13,7 +13,10 @@ use karyon_core::{
 };
 use karyon_net::Conn;
 
-use crate::{message, Error, Result, SubscriptionID};
+use crate::{
+    message::{self, SubscriptionID},
+    Error, Result,
+};
 
 const CHANNEL_CAP: usize = 10;
 
diff --git a/jsonrpc/src/lib.rs b/jsonrpc/src/lib.rs
index 14840fa..b7b632e 100644
--- a/jsonrpc/src/lib.rs
+++ b/jsonrpc/src/lib.rs
@@ -10,7 +10,7 @@ pub use client::{builder::ClientBuilder, Client};
 pub use error::{Error, Result};
 pub use server::{
     builder::ServerBuilder,
-    channel::{ArcChannel, Channel, Subscription, SubscriptionID},
+    channel::{ArcChannel, Channel, Subscription},
     pubsub_service::{PubSubRPCMethod, PubSubRPCService},
     service::{RPCMethod, RPCService},
     Server,
diff --git a/jsonrpc/src/message.rs b/jsonrpc/src/message.rs
index 34d6235..1f296cd 100644
--- a/jsonrpc/src/message.rs
+++ b/jsonrpc/src/message.rs
@@ -1,7 +1,5 @@
 use serde::{Deserialize, Serialize};
 
-use crate::SubscriptionID;
-
 pub type ID = u64;
 
 pub const JSONRPC_VERSION: &str = "2.0";
@@ -21,6 +19,8 @@ pub const INVALID_PARAMS_ERROR_CODE: i32 = -32602;
 /// Internal error: Internal JSON-RPC error.
 pub const INTERNAL_ERROR_CODE: i32 = -32603;
 
+pub type SubscriptionID = u32;
+
 #[derive(Debug, Serialize, Deserialize)]
 pub struct Request {
     pub jsonrpc: String,
diff --git a/jsonrpc/src/server/channel.rs b/jsonrpc/src/server/channel.rs
index f14c1dd..efcd344 100644
--- a/jsonrpc/src/server/channel.rs
+++ b/jsonrpc/src/server/channel.rs
@@ -2,9 +2,8 @@ use std::sync::Arc;
 
 use karyon_core::{async_runtime::lock::Mutex, util::random_32};
 
-use crate::{Error, Result};
+use crate::{message::SubscriptionID, Error, Result};
 
-pub type SubscriptionID = u32;
 pub type ArcChannel = Arc<Channel>;
 
 pub(crate) struct NewNotification {