diff --git a/backend/Cargo.lock b/backend/Cargo.lock
index 25d6f99d3c..cdae832ceb 100644
--- a/backend/Cargo.lock
+++ b/backend/Cargo.lock
@@ -1387,6 +1387,8 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "bytes",
+ "dashmap",
+ "flowy-collaboration",
  "flowy-derive",
  "flowy-error",
  "lib-dispatch",
@@ -1413,7 +1415,6 @@ dependencies = [
  "flowy-document",
  "flowy-net",
  "flowy-user",
- "flowy-virtual-net",
  "futures-core",
  "lib-dispatch",
  "lib-infra",
@@ -1504,21 +1505,6 @@ dependencies = [
  "validator",
 ]
 
-[[package]]
-name = "flowy-virtual-net"
-version = "0.1.0"
-dependencies = [
- "bytes",
- "dashmap",
- "flowy-collaboration",
- "flowy-net",
- "lib-infra",
- "lib-ws",
- "parking_lot",
- "tokio",
- "tracing",
-]
-
 [[package]]
 name = "fnv"
 version = "1.0.7"
diff --git a/backend/tests/document_test/edit_script.rs b/backend/tests/document_test/edit_script.rs
index cf900f97f0..f74d362221 100644
--- a/backend/tests/document_test/edit_script.rs
+++ b/backend/tests/document_test/edit_script.rs
@@ -17,11 +17,9 @@ use backend::services::document::persistence::{read_document, reset_document};
 use flowy_collaboration::entities::revision::{RepeatedRevision, Revision};
 use flowy_collaboration::protobuf::{RepeatedRevision as RepeatedRevisionPB, DocumentId as DocumentIdPB};
 use flowy_collaboration::sync::ServerDocumentManager;
+use flowy_net::services::ws_conn::FlowyWebSocketConnect;
 use lib_ot::core::Interval;
 
-use flowy_net::services::ws::FlowyWSConnect;
-
-
 pub struct DocumentTest {
     server: TestServer,
     flowy_test: FlowySDKTest,
@@ -39,7 +37,7 @@ pub enum DocScript {
 impl DocumentTest {
     pub async fn new() -> Self {
         let server = spawn_server().await;
-        let flowy_test = FlowySDKTest::setup_with(server.client_server_config.clone());
+        let flowy_test = FlowySDKTest::new(server.client_server_config.clone(), None);
         Self { server, flowy_test }
     }
 
@@ -57,7 +55,7 @@ struct ScriptContext {
     client_editor: Option<Arc<ClientDocumentEditor>>,
     client_sdk: FlowySDKTest,
     client_user_session: Arc<UserSession>,
-    ws_conn: Arc<FlowyWSConnect>,
+    ws_conn: Arc<FlowyWebSocketConnect>,
     server: TestServer,
     doc_id: String,
 }
@@ -65,7 +63,7 @@ struct ScriptContext {
 impl ScriptContext {
     async fn new(client_sdk: FlowySDKTest, server: TestServer) -> Self {
         let user_session = client_sdk.user_session.clone();
-        let ws_manager = client_sdk.ws_manager.clone();
+        let ws_manager = client_sdk.ws_conn.clone();
         let doc_id = create_doc(&client_sdk).await;
 
         Self {
@@ -80,7 +78,7 @@ impl ScriptContext {
 
     async fn open_doc(&mut self) {
         let doc_id = self.doc_id.clone();
-        let edit_context = self.client_sdk.document_ctx.controller.open(doc_id).await.unwrap();
+        let edit_context = self.client_sdk.document_ctx.controller.open_document(doc_id).await.unwrap();
         self.client_editor = Some(edit_context);
     }
 
diff --git a/frontend/app_flowy/.vscode/settings.json b/frontend/app_flowy/.vscode/settings.json
index cdfa99888f..13845cc225 100644
--- a/frontend/app_flowy/.vscode/settings.json
+++ b/frontend/app_flowy/.vscode/settings.json
@@ -22,4 +22,5 @@
     "files.associations": {
         "*.log.*": "log"
     },
+    "editor.formatOnSave": true,
 }
\ No newline at end of file
diff --git a/frontend/rust-lib/Cargo.toml b/frontend/rust-lib/Cargo.toml
index 23d079b073..8565d7ed6f 100644
--- a/frontend/rust-lib/Cargo.toml
+++ b/frontend/rust-lib/Cargo.toml
@@ -4,7 +4,6 @@ members = [
   "lib-log",
   "lib-sqlite",
   "flowy-net",
-  "flowy-virtual-net",
   "flowy-sdk",
   "dart-ffi",
   "flowy-user",
diff --git a/frontend/rust-lib/dart-ffi/src/lib.rs b/frontend/rust-lib/dart-ffi/src/lib.rs
index ea396464d0..1dd6d736f9 100644
--- a/frontend/rust-lib/dart-ffi/src/lib.rs
+++ b/frontend/rust-lib/dart-ffi/src/lib.rs
@@ -26,7 +26,7 @@ pub extern "C" fn init_sdk(path: *mut c_char) -> i64 {
     let path: &str = c_str.to_str().unwrap();
 
     let server_config = get_client_server_configuration().unwrap();
-    let config = FlowySDKConfig::new(path, server_config, "appflowy").log_filter("debug");
+    let config = FlowySDKConfig::new(path, server_config, "appflowy", None).log_filter("debug");
     *FLOWY_SDK.write() = Some(Arc::new(FlowySDK::new(config)));
 
     0
diff --git a/frontend/rust-lib/flowy-core/src/context.rs b/frontend/rust-lib/flowy-core/src/context.rs
index 7b283ea349..bd009d1212 100644
--- a/frontend/rust-lib/flowy-core/src/context.rs
+++ b/frontend/rust-lib/flowy-core/src/context.rs
@@ -119,7 +119,7 @@ impl CoreContext {
             .payload(repeated_workspace)
             .send();
 
-        log::debug!("workspace initialize after sign up");
+        tracing::debug!("Create default workspace after sign up");
         let _ = self.init(&token).await?;
         Ok(())
     }
@@ -130,13 +130,13 @@ impl CoreContext {
                 return Ok(());
             }
         }
-        log::debug!("Start initializing flowy core");
+        tracing::debug!("Start initializing flowy core");
         INIT_WORKSPACE.write().insert(token.to_owned(), true);
         let _ = self.workspace_controller.init()?;
         let _ = self.app_controller.init()?;
         let _ = self.view_controller.init()?;
         let _ = self.trash_controller.init()?;
-        log::debug!("Finish initializing core");
+        tracing::debug!("Finish initializing core");
 
         Ok(())
     }
diff --git a/frontend/rust-lib/flowy-core/src/services/view/controller.rs b/frontend/rust-lib/flowy-core/src/services/view/controller.rs
index 47a65ba055..57854cc10f 100644
--- a/frontend/rust-lib/flowy-core/src/services/view/controller.rs
+++ b/frontend/rust-lib/flowy-core/src/services/view/controller.rs
@@ -129,7 +129,7 @@ impl ViewController {
     #[tracing::instrument(level = "debug", skip(self, params), fields(doc_id = %params.doc_id), err)]
     pub(crate) async fn open_view(&self, params: DocumentId) -> Result<DocumentDelta, FlowyError> {
         let doc_id = params.doc_id.clone();
-        let editor = self.document_ctx.controller.open(&params.doc_id).await?;
+        let editor = self.document_ctx.controller.open_document(&params.doc_id).await?;
 
         KV::set_str(LATEST_VIEW_ID, doc_id.clone());
         let document_json = editor.document_json().await?;
@@ -141,7 +141,7 @@ impl ViewController {
 
     #[tracing::instrument(level = "debug", skip(self,params), fields(doc_id = %params.doc_id), err)]
     pub(crate) async fn close_view(&self, params: DocumentId) -> Result<(), FlowyError> {
-        let _ = self.document_ctx.controller.close(&params.doc_id)?;
+        let _ = self.document_ctx.controller.close_document(&params.doc_id)?;
         Ok(())
     }
 
@@ -152,14 +152,14 @@ impl ViewController {
                 let _ = KV::remove(LATEST_VIEW_ID);
             }
         }
-        let _ = self.document_ctx.controller.close(&params.doc_id)?;
+        let _ = self.document_ctx.controller.close_document(&params.doc_id)?;
         Ok(())
     }
 
     #[tracing::instrument(level = "debug", skip(self, params), fields(doc_id = %params.doc_id), err)]
     pub(crate) async fn duplicate_view(&self, params: DocumentId) -> Result<(), FlowyError> {
         let view: View = ViewTableSql::read_view(&params.doc_id, &*self.database.db_connection()?)?.into();
-        let editor = self.document_ctx.controller.open(&params.doc_id).await?;
+        let editor = self.document_ctx.controller.open_document(&params.doc_id).await?;
         let document_json = editor.document_json().await?;
         let duplicate_params = CreateViewParams {
             belong_to_id: view.belong_to_id.clone(),
@@ -177,7 +177,7 @@ impl ViewController {
 
     #[tracing::instrument(level = "debug", skip(self, params), err)]
     pub(crate) async fn export_doc(&self, params: ExportParams) -> Result<ExportData, FlowyError> {
-        let editor = self.document_ctx.controller.open(&params.doc_id).await?;
+        let editor = self.document_ctx.controller.open_document(&params.doc_id).await?;
         let delta_json = editor.document_json().await?;
         Ok(ExportData {
             data: delta_json,
diff --git a/frontend/rust-lib/flowy-core/tests/workspace/view_test.rs b/frontend/rust-lib/flowy-core/tests/workspace/view_test.rs
index ef0162aa4a..0bbf507061 100644
--- a/frontend/rust-lib/flowy-core/tests/workspace/view_test.rs
+++ b/frontend/rust-lib/flowy-core/tests/workspace/view_test.rs
@@ -8,7 +8,7 @@ use flowy_test::{helper::*, FlowySDKTest};
 #[tokio::test]
 #[should_panic]
 async fn view_delete() {
-    let test = FlowySDKTest::setup();
+    let test = FlowySDKTest::default();
     let _ = test.init_user().await;
 
     let test = ViewTest::new(&test).await;
@@ -21,7 +21,7 @@ async fn view_delete() {
 
 #[tokio::test]
 async fn view_delete_then_putback() {
-    let test = FlowySDKTest::setup();
+    let test = FlowySDKTest::default();
     let _ = test.init_user().await;
 
     let test = ViewTest::new(&test).await;
@@ -44,7 +44,7 @@ async fn view_delete_then_putback() {
 
 #[tokio::test]
 async fn view_delete_all() {
-    let test = FlowySDKTest::setup();
+    let test = FlowySDKTest::default();
     let _ = test.init_user().await;
 
     let test = ViewTest::new(&test).await;
@@ -66,7 +66,7 @@ async fn view_delete_all() {
 
 #[tokio::test]
 async fn view_delete_all_permanent() {
-    let test = FlowySDKTest::setup();
+    let test = FlowySDKTest::default();
     let _ = test.init_user().await;
 
     let test = ViewTest::new(&test).await;
@@ -85,7 +85,7 @@ async fn view_delete_all_permanent() {
 
 #[tokio::test]
 async fn view_open_doc() {
-    let test = FlowySDKTest::setup();
+    let test = FlowySDKTest::default();
     let _ = test.init_user().await;
 
     let test = ViewTest::new(&test).await;
diff --git a/frontend/rust-lib/flowy-core/tests/workspace/workspace_test.rs b/frontend/rust-lib/flowy-core/tests/workspace/workspace_test.rs
index 1fde2ff4b7..913a9556d2 100644
--- a/frontend/rust-lib/flowy-core/tests/workspace/workspace_test.rs
+++ b/frontend/rust-lib/flowy-core/tests/workspace/workspace_test.rs
@@ -42,7 +42,7 @@ async fn workspace_create_with_apps() {
 #[tokio::test]
 async fn workspace_create_with_invalid_name() {
     for (name, code) in invalid_workspace_name_test_case() {
-        let sdk = FlowySDKTest::setup();
+        let sdk = FlowySDKTest::default();
         let request = CreateWorkspaceRequest {
             name,
             desc: "".to_owned(),
@@ -62,7 +62,7 @@ async fn workspace_create_with_invalid_name() {
 
 #[tokio::test]
 async fn workspace_update_with_invalid_name() {
-    let sdk = FlowySDKTest::setup();
+    let sdk = FlowySDKTest::default();
     for (name, code) in invalid_workspace_name_test_case() {
         let request = CreateWorkspaceRequest {
             name,
diff --git a/frontend/rust-lib/flowy-document/src/controller.rs b/frontend/rust-lib/flowy-document/src/controller.rs
index 55e90cbda2..1ff83d0d16 100644
--- a/frontend/rust-lib/flowy-document/src/controller.rs
+++ b/frontend/rust-lib/flowy-document/src/controller.rs
@@ -2,7 +2,7 @@ use crate::{
     context::DocumentUser,
     core::{
         edit::ClientDocumentEditor,
-        revision::{RevisionCache, RevisionManager, RevisionServer},
+        revision::{DocumentRevisionCache, DocumentRevisionManager, RevisionServer},
         DocumentWSReceivers,
         DocumentWebSocket,
         WSStateReceiver,
@@ -54,14 +54,14 @@ impl DocumentController {
     }
 
     #[tracing::instrument(level = "debug", skip(self, doc_id), fields(doc_id), err)]
-    pub async fn open<T: AsRef<str>>(&self, doc_id: T) -> Result<Arc<ClientDocumentEditor>, FlowyError> {
+    pub async fn open_document<T: AsRef<str>>(&self, doc_id: T) -> Result<Arc<ClientDocumentEditor>, FlowyError> {
         let doc_id = doc_id.as_ref();
         tracing::Span::current().record("doc_id", &doc_id);
         self.get_editor(doc_id).await
     }
 
     #[tracing::instrument(level = "debug", skip(self, doc_id), fields(doc_id), err)]
-    pub fn close<T: AsRef<str>>(&self, doc_id: T) -> Result<(), FlowyError> {
+    pub fn close_document<T: AsRef<str>>(&self, doc_id: T) -> Result<(), FlowyError> {
         let doc_id = doc_id.as_ref();
         tracing::Span::current().record("doc_id", &doc_id);
         self.open_cache.remove(doc_id);
@@ -127,10 +127,10 @@ impl DocumentController {
         Ok(doc_editor)
     }
 
-    fn make_rev_manager(&self, doc_id: &str, pool: Arc<ConnectionPool>) -> Result<RevisionManager, FlowyError> {
+    fn make_rev_manager(&self, doc_id: &str, pool: Arc<ConnectionPool>) -> Result<DocumentRevisionManager, FlowyError> {
         let user_id = self.user.user_id()?;
-        let cache = Arc::new(RevisionCache::new(&user_id, doc_id, pool));
-        Ok(RevisionManager::new(&user_id, doc_id, cache))
+        let cache = Arc::new(DocumentRevisionCache::new(&user_id, doc_id, pool));
+        Ok(DocumentRevisionManager::new(&user_id, doc_id, cache))
     }
 }
 
diff --git a/frontend/rust-lib/flowy-document/src/core/edit/editor.rs b/frontend/rust-lib/flowy-document/src/core/edit/editor.rs
index 635f4394f4..89672cfef6 100644
--- a/frontend/rust-lib/flowy-document/src/core/edit/editor.rs
+++ b/frontend/rust-lib/flowy-document/src/core/edit/editor.rs
@@ -18,7 +18,7 @@ use tokio::sync::{mpsc, mpsc::UnboundedSender, oneshot};
 
 pub struct ClientDocumentEditor {
     pub doc_id: String,
-    rev_manager: Arc<RevisionManager>,
+    rev_manager: Arc<DocumentRevisionManager>,
     ws_manager: Arc<dyn DocumentWebSocketManager>,
     edit_queue: UnboundedSender<EditorCommand>,
 }
@@ -27,7 +27,7 @@ impl ClientDocumentEditor {
     pub(crate) async fn new(
         doc_id: &str,
         user: Arc<dyn DocumentUser>,
-        mut rev_manager: RevisionManager,
+        mut rev_manager: DocumentRevisionManager,
         ws: Arc<dyn DocumentWebSocket>,
         server: Arc<dyn RevisionServer>,
     ) -> FlowyResult<Arc<Self>> {
@@ -157,7 +157,7 @@ impl ClientDocumentEditor {
 
 fn spawn_edit_queue(
     user: Arc<dyn DocumentUser>,
-    rev_manager: Arc<RevisionManager>,
+    rev_manager: Arc<DocumentRevisionManager>,
     delta: RichTextDelta,
 ) -> UnboundedSender<EditorCommand> {
     let (sender, receiver) = mpsc::unbounded_channel::<EditorCommand>();
@@ -184,5 +184,5 @@ impl ClientDocumentEditor {
         Ok(delta)
     }
 
-    pub fn rev_manager(&self) -> Arc<RevisionManager> { self.rev_manager.clone() }
+    pub fn rev_manager(&self) -> Arc<DocumentRevisionManager> { self.rev_manager.clone() }
 }
diff --git a/frontend/rust-lib/flowy-document/src/core/edit/queue.rs b/frontend/rust-lib/flowy-document/src/core/edit/queue.rs
index 0e676e23a3..6df45450fb 100644
--- a/frontend/rust-lib/flowy-document/src/core/edit/queue.rs
+++ b/frontend/rust-lib/flowy-document/src/core/edit/queue.rs
@@ -1,4 +1,4 @@
-use crate::{context::DocumentUser, core::RevisionManager};
+use crate::{context::DocumentUser, core::DocumentRevisionManager};
 use async_stream::stream;
 use flowy_collaboration::{
     document::{history::UndoResult, Document, NewlineDoc},
@@ -18,14 +18,14 @@ use tokio::sync::{mpsc, oneshot, RwLock};
 pub(crate) struct EditorCommandQueue {
     document: Arc<RwLock<Document>>,
     user: Arc<dyn DocumentUser>,
-    rev_manager: Arc<RevisionManager>,
+    rev_manager: Arc<DocumentRevisionManager>,
     receiver: Option<mpsc::UnboundedReceiver<EditorCommand>>,
 }
 
 impl EditorCommandQueue {
     pub(crate) fn new(
         user: Arc<dyn DocumentUser>,
-        rev_manager: Arc<RevisionManager>,
+        rev_manager: Arc<DocumentRevisionManager>,
         delta: RichTextDelta,
         receiver: mpsc::UnboundedReceiver<EditorCommand>,
     ) -> Self {
diff --git a/frontend/rust-lib/flowy-document/src/core/revision/cache.rs b/frontend/rust-lib/flowy-document/src/core/revision/cache.rs
index 1e4a3827a1..f2aaea024d 100644
--- a/frontend/rust-lib/flowy-document/src/core/revision/cache.rs
+++ b/frontend/rust-lib/flowy-document/src/core/revision/cache.rs
@@ -1,7 +1,7 @@
 use crate::{
     core::revision::{
         disk::{DocumentRevisionDiskCache, RevisionChangeset, RevisionTableState, SQLitePersistence},
-        memory::{RevisionMemoryCache, RevisionMemoryCacheDelegate},
+        memory::{DocumentRevisionMemoryCache, RevisionMemoryCacheDelegate},
     },
     errors::FlowyError,
 };
@@ -17,17 +17,17 @@ use std::{
 };
 use tokio::task::spawn_blocking;
 
-pub struct RevisionCache {
+pub struct DocumentRevisionCache {
     doc_id: String,
     disk_cache: Arc<dyn DocumentRevisionDiskCache<Error = FlowyError>>,
-    memory_cache: Arc<RevisionMemoryCache>,
+    memory_cache: Arc<DocumentRevisionMemoryCache>,
     latest_rev_id: AtomicI64,
 }
 
-impl RevisionCache {
-    pub fn new(user_id: &str, doc_id: &str, pool: Arc<ConnectionPool>) -> RevisionCache {
+impl DocumentRevisionCache {
+    pub fn new(user_id: &str, doc_id: &str, pool: Arc<ConnectionPool>) -> DocumentRevisionCache {
         let disk_cache = Arc::new(SQLitePersistence::new(user_id, pool));
-        let memory_cache = Arc::new(RevisionMemoryCache::new(doc_id, Arc::new(disk_cache.clone())));
+        let memory_cache = Arc::new(DocumentRevisionMemoryCache::new(doc_id, Arc::new(disk_cache.clone())));
         let doc_id = doc_id.to_owned();
         Self {
             doc_id,
@@ -44,7 +44,7 @@ impl RevisionCache {
         write_to_disk: bool,
     ) -> FlowyResult<RevisionRecord> {
         if self.memory_cache.contains(&revision.rev_id) {
-            return Err(FlowyError::internal().context(format!("Duplicate remote revision id: {}", revision.rev_id)));
+            return Err(FlowyError::internal().context(format!("Duplicate revision: {} {:?}", revision.rev_id, state)));
         }
         let state = state.as_ref().clone();
         let rev_id = revision.rev_id;
@@ -53,6 +53,7 @@ impl RevisionCache {
             state,
             write_to_disk,
         };
+
         self.memory_cache.add(Cow::Borrowed(&record)).await;
         self.set_latest_rev_id(rev_id);
         Ok(record)
@@ -131,10 +132,15 @@ impl RevisionCache {
 }
 
 impl RevisionMemoryCacheDelegate for Arc<SQLitePersistence> {
+    #[tracing::instrument(level = "debug", skip(self, records), fields(checkpoint_result), err)]
     fn checkpoint_tick(&self, mut records: Vec<RevisionRecord>) -> FlowyResult<()> {
         let conn = &*self.pool.get().map_err(internal_error)?;
         records.retain(|record| record.write_to_disk);
         if !records.is_empty() {
+            tracing::Span::current().record(
+                "checkpoint_result",
+                &format!("{} records were saved", records.len()).as_str(),
+            );
             let _ = self.write_revision_records(records, &conn)?;
         }
         Ok(())
diff --git a/frontend/rust-lib/flowy-document/src/core/revision/manager.rs b/frontend/rust-lib/flowy-document/src/core/revision/manager.rs
index 7bc30ea0d8..0867a4b3dc 100644
--- a/frontend/rust-lib/flowy-document/src/core/revision/manager.rs
+++ b/frontend/rust-lib/flowy-document/src/core/revision/manager.rs
@@ -1,5 +1,5 @@
 use crate::{
-    core::{revision::RevisionCache, RevisionRecord},
+    core::{revision::DocumentRevisionCache, RevisionRecord},
     errors::FlowyError,
 };
 use bytes::Bytes;
@@ -22,16 +22,16 @@ pub trait RevisionServer: Send + Sync {
     fn fetch_document(&self, doc_id: &str) -> FutureResult<DocumentInfo, FlowyError>;
 }
 
-pub struct RevisionManager {
+pub struct DocumentRevisionManager {
     pub(crate) doc_id: String,
     user_id: String,
     rev_id_counter: RevIdCounter,
-    cache: Arc<RevisionCache>,
+    cache: Arc<DocumentRevisionCache>,
     sync_seq: Arc<RevisionSyncSequence>,
 }
 
-impl RevisionManager {
-    pub fn new(user_id: &str, doc_id: &str, cache: Arc<RevisionCache>) -> Self {
+impl DocumentRevisionManager {
+    pub fn new(user_id: &str, doc_id: &str, cache: Arc<DocumentRevisionCache>) -> Self {
         let rev_id_counter = RevIdCounter::new(0);
         let sync_seq = Arc::new(RevisionSyncSequence::new());
         Self {
@@ -70,8 +70,8 @@ impl RevisionManager {
         if revision.delta_data.is_empty() {
             return Err(FlowyError::internal().context("Delta data should be empty"));
         }
-        self.rev_id_counter.set(revision.rev_id);
         let _ = self.cache.add(revision.clone(), RevisionState::Ack, true).await?;
+        self.rev_id_counter.set(revision.rev_id);
         Ok(())
     }
 
@@ -194,7 +194,7 @@ struct RevisionLoader {
     doc_id: String,
     user_id: String,
     server: Arc<dyn RevisionServer>,
-    cache: Arc<RevisionCache>,
+    cache: Arc<DocumentRevisionCache>,
 }
 
 impl RevisionLoader {
@@ -272,6 +272,6 @@ impl RevisionSyncSequence {
 }
 
 #[cfg(feature = "flowy_unit_test")]
-impl RevisionManager {
-    pub fn revision_cache(&self) -> Arc<RevisionCache> { self.cache.clone() }
+impl DocumentRevisionManager {
+    pub fn revision_cache(&self) -> Arc<DocumentRevisionCache> { self.cache.clone() }
 }
diff --git a/frontend/rust-lib/flowy-document/src/core/revision/memory.rs b/frontend/rust-lib/flowy-document/src/core/revision/memory.rs
index 35fc8f9bbf..4f8dc37f09 100644
--- a/frontend/rust-lib/flowy-document/src/core/revision/memory.rs
+++ b/frontend/rust-lib/flowy-document/src/core/revision/memory.rs
@@ -2,7 +2,6 @@ use crate::core::RevisionRecord;
 use dashmap::DashMap;
 use flowy_collaboration::entities::revision::RevisionRange;
 use flowy_error::{FlowyError, FlowyResult};
-use futures_util::{stream, stream::StreamExt};
 use std::{borrow::Cow, sync::Arc, time::Duration};
 use tokio::{sync::RwLock, task::JoinHandle};
 
@@ -11,7 +10,7 @@ pub(crate) trait RevisionMemoryCacheDelegate: Send + Sync {
     fn receive_ack(&self, doc_id: &str, rev_id: i64);
 }
 
-pub(crate) struct RevisionMemoryCache {
+pub(crate) struct DocumentRevisionMemoryCache {
     doc_id: String,
     revs_map: Arc<DashMap<i64, RevisionRecord>>,
     delegate: Arc<dyn RevisionMemoryCacheDelegate>,
@@ -19,9 +18,9 @@ pub(crate) struct RevisionMemoryCache {
     defer_save: RwLock<Option<JoinHandle<()>>>,
 }
 
-impl RevisionMemoryCache {
+impl DocumentRevisionMemoryCache {
     pub(crate) fn new(doc_id: &str, delegate: Arc<dyn RevisionMemoryCacheDelegate>) -> Self {
-        RevisionMemoryCache {
+        DocumentRevisionMemoryCache {
             doc_id: doc_id.to_owned(),
             revs_map: Arc::new(DashMap::new()),
             delegate,
@@ -38,15 +37,19 @@ impl RevisionMemoryCache {
             Cow::Owned(record) => record,
         };
 
+        let rev_id = record.revision.rev_id;
+        if self.revs_map.contains_key(&rev_id) {
+            return;
+        }
+
         if let Some(rev_id) = self.pending_write_revs.read().await.last() {
             if *rev_id >= record.revision.rev_id {
                 tracing::error!("Duplicated revision added to memory_cache");
                 return;
             }
         }
-        // TODO: Remove outdated revisions to reduce memory usage
-        self.revs_map.insert(record.revision.rev_id, record.clone());
-        self.pending_write_revs.write().await.push(record.revision.rev_id);
+        self.revs_map.insert(rev_id, record);
+        self.pending_write_revs.write().await.push(rev_id);
         self.make_checkpoint().await;
     }
 
@@ -79,16 +82,19 @@ impl RevisionMemoryCache {
 
     pub(crate) async fn reset_with_revisions(&self, revision_records: &[RevisionRecord]) -> FlowyResult<()> {
         self.revs_map.clear();
-        self.pending_write_revs.write().await.clear();
         if let Some(handler) = self.defer_save.write().await.take() {
             handler.abort();
         }
-        stream::iter(revision_records)
-            .for_each(|record| async move {
-                self.add(Cow::Borrowed(record)).await;
-            })
-            .await;
 
+        let mut write_guard = self.pending_write_revs.write().await;
+        write_guard.clear();
+        for record in revision_records {
+            self.revs_map.insert(record.revision.rev_id, record.clone());
+            write_guard.push(record.revision.rev_id);
+        }
+        drop(write_guard);
+
+        self.make_checkpoint().await;
         Ok(())
     }
 
@@ -107,9 +113,8 @@ impl RevisionMemoryCache {
         let delegate = self.delegate.clone();
 
         *self.defer_save.write().await = Some(tokio::spawn(async move {
-            tokio::time::sleep(Duration::from_millis(300)).await;
+            tokio::time::sleep(Duration::from_millis(600)).await;
             let mut revs_write_guard = pending_write_revs.write().await;
-            // TODO:
             // It may cause performance issues because we hold the write lock of the
             // rev_order and the lock will be released after the checkpoint has been written
             // to the disk.
diff --git a/frontend/rust-lib/flowy-document/src/core/web_socket/http_ws_impl.rs b/frontend/rust-lib/flowy-document/src/core/web_socket/http_ws_impl.rs
index cd5febd2cf..d907622c1d 100644
--- a/frontend/rust-lib/flowy-document/src/core/web_socket/http_ws_impl.rs
+++ b/frontend/rust-lib/flowy-document/src/core/web_socket/http_ws_impl.rs
@@ -1,5 +1,5 @@
 use crate::{
-    core::{web_socket::web_socket::DocumentWebSocketManager, SYNC_INTERVAL_IN_MILLIS},
+    core::{web_socket::ws_manager::DocumentWebSocketManager, SYNC_INTERVAL_IN_MILLIS},
     ws_receivers::{DocumentWSReceiver, DocumentWebSocket},
 };
 use async_stream::stream;
@@ -27,7 +27,7 @@ pub(crate) struct HttpWebSocketManager {
     doc_id: String,
     data_provider: Arc<dyn DocumentWSSinkDataProvider>,
     stream_consumer: Arc<dyn DocumentWSSteamConsumer>,
-    ws: Arc<dyn DocumentWebSocket>,
+    ws_conn: Arc<dyn DocumentWebSocket>,
     ws_msg_tx: UnboundedSender<DocumentServerWSData>,
     ws_msg_rx: Option<UnboundedReceiver<DocumentServerWSData>>,
     stop_sync_tx: SinkStopTx,
@@ -37,7 +37,7 @@ pub(crate) struct HttpWebSocketManager {
 impl HttpWebSocketManager {
     pub(crate) fn new(
         doc_id: &str,
-        ws: Arc<dyn DocumentWebSocket>,
+        ws_conn: Arc<dyn DocumentWebSocket>,
         data_provider: Arc<dyn DocumentWSSinkDataProvider>,
         stream_consumer: Arc<dyn DocumentWSSteamConsumer>,
     ) -> Self {
@@ -49,7 +49,7 @@ impl HttpWebSocketManager {
             doc_id,
             data_provider,
             stream_consumer,
-            ws,
+            ws_conn,
             ws_msg_tx,
             ws_msg_rx: Some(ws_msg_rx),
             stop_sync_tx,
@@ -64,7 +64,7 @@ impl HttpWebSocketManager {
         let sink = DocumentWSSink::new(
             &self.doc_id,
             self.data_provider.clone(),
-            self.ws.clone(),
+            self.ws_conn.clone(),
             self.stop_sync_tx.subscribe(),
         );
         let stream = DocumentWSStream::new(
@@ -200,7 +200,6 @@ impl DocumentWSStream {
                 // Notify the user that someone has connected to this document
             },
         }
-
         Ok(())
     }
 }
@@ -260,7 +259,7 @@ impl DocumentWSSink {
             .for_each(|_| async {
                 match self.send_next_revision().await {
                     Ok(_) => {},
-                    Err(e) => log::error!("[DocumentSink]: send msg failed, {:?}", e),
+                    Err(e) => log::error!("[DocumentSink]: Send failed, {:?}", e),
                 }
             })
             .await;
@@ -273,6 +272,7 @@ impl DocumentWSSink {
                 Ok(())
             },
             Some(data) => {
+                tracing::debug!("[DocumentSink]: Try send: {}:{:?}-{}", data.doc_id, data.ty, data.id());
                 self.ws_sender.send(data).map_err(internal_error)
                 // let _ = tokio::time::timeout(Duration::from_millis(2000),
             },
diff --git a/frontend/rust-lib/flowy-document/src/core/web_socket/mod.rs b/frontend/rust-lib/flowy-document/src/core/web_socket/mod.rs
index 519cff4c02..5fc1dc2604 100644
--- a/frontend/rust-lib/flowy-document/src/core/web_socket/mod.rs
+++ b/frontend/rust-lib/flowy-document/src/core/web_socket/mod.rs
@@ -1,7 +1,7 @@
 #![allow(clippy::module_inception)]
 mod http_ws_impl;
 mod local_ws_impl;
-mod web_socket;
+mod ws_manager;
 
 pub(crate) use http_ws_impl::*;
-pub(crate) use web_socket::*;
+pub(crate) use ws_manager::*;
diff --git a/frontend/rust-lib/flowy-document/src/core/web_socket/web_socket.rs b/frontend/rust-lib/flowy-document/src/core/web_socket/ws_manager.rs
similarity index 83%
rename from frontend/rust-lib/flowy-document/src/core/web_socket/web_socket.rs
rename to frontend/rust-lib/flowy-document/src/core/web_socket/ws_manager.rs
index b87c172081..482818dd43 100644
--- a/frontend/rust-lib/flowy-document/src/core/web_socket/web_socket.rs
+++ b/frontend/rust-lib/flowy-document/src/core/web_socket/ws_manager.rs
@@ -1,9 +1,9 @@
 use crate::core::{
     web_socket::{DocumentWSSinkDataProvider, DocumentWSSteamConsumer, HttpWebSocketManager},
+    DocumentRevisionManager,
     DocumentWSReceiver,
     DocumentWebSocket,
     EditorCommand,
-    RevisionManager,
     TransformDeltas,
 };
 use bytes::Bytes;
@@ -17,7 +17,6 @@ use flowy_collaboration::{
 use flowy_error::{internal_error, FlowyError, FlowyResult};
 use lib_infra::future::FutureResult;
 
-use crate::core::web_socket::local_ws_impl::LocalWebSocketManager;
 use flowy_collaboration::entities::ws::DocumentServerWSDataType;
 
 use lib_ws::WSConnectState;
@@ -33,36 +32,54 @@ pub(crate) async fn make_document_ws_manager(
     doc_id: String,
     user_id: String,
     edit_cmd_tx: UnboundedSender<EditorCommand>,
-    rev_manager: Arc<RevisionManager>,
-    ws: Arc<dyn DocumentWebSocket>,
+    rev_manager: Arc<DocumentRevisionManager>,
+    ws_conn: Arc<dyn DocumentWebSocket>,
 ) -> Arc<dyn DocumentWebSocketManager> {
-    if cfg!(feature = "http_server") {
-        let shared_sink = Arc::new(SharedWSSinkDataProvider::new(rev_manager.clone()));
-        let ws_stream_consumer = Arc::new(DocumentWebSocketSteamConsumerAdapter {
-            doc_id: doc_id.clone(),
-            edit_cmd_tx,
-            rev_manager: rev_manager.clone(),
-            shared_sink: shared_sink.clone(),
-        });
-        let ws_stream_provider = DocumentWSSinkDataProviderAdapter(shared_sink);
-        let ws_manager = Arc::new(HttpWebSocketManager::new(
-            &doc_id,
-            ws.clone(),
-            Arc::new(ws_stream_provider),
-            ws_stream_consumer,
-        ));
-        listen_document_ws_state(&user_id, &doc_id, ws_manager.scribe_state(), rev_manager);
-        Arc::new(ws_manager)
-    } else {
-        Arc::new(Arc::new(LocalWebSocketManager {}))
-    }
+    // if cfg!(feature = "http_server") {
+    //     let shared_sink =
+    // Arc::new(SharedWSSinkDataProvider::new(rev_manager.clone()));
+    //     let ws_stream_consumer = Arc::new(DocumentWebSocketSteamConsumerAdapter {
+    //         doc_id: doc_id.clone(),
+    //         edit_cmd_tx,
+    //         rev_manager: rev_manager.clone(),
+    //         shared_sink: shared_sink.clone(),
+    //     });
+    //     let data_provider =
+    // Arc::new(DocumentWSSinkDataProviderAdapter(shared_sink));
+    //     let ws_manager = Arc::new(HttpWebSocketManager::new(
+    //         &doc_id,
+    //         ws_conn,
+    //         data_provider,
+    //         ws_stream_consumer,
+    //     ));
+    //     listen_document_ws_state(&user_id, &doc_id, ws_manager.scribe_state(),
+    // rev_manager);     Arc::new(ws_manager)
+    // } else {
+    //     Arc::new(Arc::new(LocalWebSocketManager {}))
+    // }
+    let shared_sink = Arc::new(SharedWSSinkDataProvider::new(rev_manager.clone()));
+    let ws_stream_consumer = Arc::new(DocumentWebSocketSteamConsumerAdapter {
+        doc_id: doc_id.clone(),
+        edit_cmd_tx,
+        rev_manager: rev_manager.clone(),
+        shared_sink: shared_sink.clone(),
+    });
+    let data_provider = Arc::new(DocumentWSSinkDataProviderAdapter(shared_sink));
+    let ws_manager = Arc::new(HttpWebSocketManager::new(
+        &doc_id,
+        ws_conn,
+        data_provider,
+        ws_stream_consumer,
+    ));
+    listen_document_ws_state(&user_id, &doc_id, ws_manager.scribe_state(), rev_manager);
+    Arc::new(ws_manager)
 }
 
 fn listen_document_ws_state(
     _user_id: &str,
     _doc_id: &str,
     mut subscriber: broadcast::Receiver<WSConnectState>,
-    _rev_manager: Arc<RevisionManager>,
+    _rev_manager: Arc<DocumentRevisionManager>,
 ) {
     tokio::spawn(async move {
         while let Ok(state) = subscriber.recv().await {
@@ -79,7 +96,7 @@ fn listen_document_ws_state(
 pub(crate) struct DocumentWebSocketSteamConsumerAdapter {
     pub(crate) doc_id: String,
     pub(crate) edit_cmd_tx: UnboundedSender<EditorCommand>,
-    pub(crate) rev_manager: Arc<RevisionManager>,
+    pub(crate) rev_manager: Arc<DocumentRevisionManager>,
     pub(crate) shared_sink: Arc<SharedWSSinkDataProvider>,
 }
 
@@ -141,7 +158,7 @@ async fn transform_pushed_revisions(
 #[tracing::instrument(level = "debug", skip(edit_cmd_tx, rev_manager, bytes))]
 pub(crate) async fn handle_remote_revision(
     edit_cmd_tx: UnboundedSender<EditorCommand>,
-    rev_manager: Arc<RevisionManager>,
+    rev_manager: Arc<DocumentRevisionManager>,
     bytes: Bytes,
 ) -> FlowyResult<Option<Revision>> {
     let mut revisions = RepeatedRevision::try_from(bytes)?.into_inner();
@@ -202,12 +219,12 @@ enum SourceType {
 #[derive(Clone)]
 pub(crate) struct SharedWSSinkDataProvider {
     shared: Arc<RwLock<VecDeque<DocumentClientWSData>>>,
-    rev_manager: Arc<RevisionManager>,
+    rev_manager: Arc<DocumentRevisionManager>,
     source_ty: Arc<RwLock<SourceType>>,
 }
 
 impl SharedWSSinkDataProvider {
-    pub(crate) fn new(rev_manager: Arc<RevisionManager>) -> Self {
+    pub(crate) fn new(rev_manager: Arc<DocumentRevisionManager>) -> Self {
         SharedWSSinkDataProvider {
             shared: Arc::new(RwLock::new(VecDeque::new())),
             rev_manager,
@@ -241,7 +258,6 @@ impl SharedWSSinkDataProvider {
 
                 match self.rev_manager.next_sync_revision().await? {
                     Some(rev) => {
-                        tracing::debug!("[SharedWSSinkDataProvider]: {}:{:?}", rev.doc_id, rev.rev_id);
                         let doc_id = rev.doc_id.clone();
                         Ok(Some(DocumentClientWSData::from_revisions(&doc_id, vec![rev])))
                     },
diff --git a/frontend/rust-lib/flowy-net/Cargo.toml b/frontend/rust-lib/flowy-net/Cargo.toml
index 307752c51e..e0567c4bc0 100644
--- a/frontend/rust-lib/flowy-net/Cargo.toml
+++ b/frontend/rust-lib/flowy-net/Cargo.toml
@@ -9,6 +9,7 @@ edition = "2018"
 lib-dispatch = { path = "../lib-dispatch" }
 flowy-error = { path = "../flowy-error" }
 flowy-derive = { path = "../../../shared-lib/flowy-derive" }
+flowy-collaboration = { path = "../../../shared-lib/flowy-collaboration"}
 lib-infra = { path = "../../../shared-lib/lib-infra" }
 protobuf = {version = "2.18.0"}
 lib-ws = { path = "../../../shared-lib/lib-ws" }
@@ -19,6 +20,6 @@ parking_lot = "0.11"
 strum = "0.21"
 strum_macros = "0.21"
 tracing = { version = "0.1", features = ["log"] }
-
+dashmap = {version = "4.0"}
 [features]
 http_server = []
\ No newline at end of file
diff --git a/frontend/rust-lib/flowy-net/src/handlers/mod.rs b/frontend/rust-lib/flowy-net/src/handlers/mod.rs
index 59e7b9c986..302f9b787f 100644
--- a/frontend/rust-lib/flowy-net/src/handlers/mod.rs
+++ b/frontend/rust-lib/flowy-net/src/handlers/mod.rs
@@ -1,5 +1,4 @@
-use crate::{entities::NetworkState, services::ws::FlowyWSConnect};
-
+use crate::{entities::NetworkState, services::ws_conn::FlowyWebSocketConnect};
 use flowy_error::FlowyError;
 use lib_dispatch::prelude::{Data, Unit};
 use std::sync::Arc;
@@ -7,7 +6,7 @@ use std::sync::Arc;
 #[tracing::instrument(skip(data, ws_manager))]
 pub async fn update_network_ty(
     data: Data<NetworkState>,
-    ws_manager: Unit<Arc<FlowyWSConnect>>,
+    ws_manager: Unit<Arc<FlowyWebSocketConnect>>,
 ) -> Result<(), FlowyError> {
     let network_state = data.into_inner();
     ws_manager.update_network_type(&network_state.ty);
diff --git a/frontend/rust-lib/flowy-net/src/module.rs b/frontend/rust-lib/flowy-net/src/module.rs
index 4ca0973dcd..4a2c62f8d2 100644
--- a/frontend/rust-lib/flowy-net/src/module.rs
+++ b/frontend/rust-lib/flowy-net/src/module.rs
@@ -1,10 +1,10 @@
-use crate::{event::NetworkEvent, handlers::*, services::ws::FlowyWSConnect};
+use crate::{event::NetworkEvent, handlers::*, services::ws_conn::FlowyWebSocketConnect};
 use lib_dispatch::prelude::*;
 use std::sync::Arc;
 
-pub fn create(ws_manager: Arc<FlowyWSConnect>) -> Module {
+pub fn create(ws_conn: Arc<FlowyWebSocketConnect>) -> Module {
     Module::new()
         .name("Flowy-Network")
-        .data(ws_manager)
+        .data(ws_conn)
         .event(NetworkEvent::UpdateNetworkType, update_network_ty)
 }
diff --git a/frontend/rust-lib/flowy-net/src/services/http_ws/http_ws_impl.rs b/frontend/rust-lib/flowy-net/src/services/http_ws/http_ws_impl.rs
new file mode 100644
index 0000000000..f51ad89fed
--- /dev/null
+++ b/frontend/rust-lib/flowy-net/src/services/http_ws/http_ws_impl.rs
@@ -0,0 +1,54 @@
+use crate::services::ws_conn::{FlowyRawWebSocket, FlowyWSSender};
+use flowy_error::internal_error;
+pub use flowy_error::FlowyError;
+use lib_infra::future::FutureResult;
+pub use lib_ws::{WSConnectState, WSMessageReceiver, WebSocketRawMessage};
+use lib_ws::{WSController, WSSender};
+
+use std::sync::Arc;
+use tokio::sync::broadcast::Receiver;
+
+impl FlowyRawWebSocket for Arc<WSController> {
+    fn start_connect(&self, addr: String) -> FutureResult<(), FlowyError> {
+        let cloned_ws = self.clone();
+        FutureResult::new(async move {
+            let _ = cloned_ws.start(addr).await.map_err(internal_error)?;
+            Ok(())
+        })
+    }
+
+    fn stop_connect(&self) -> FutureResult<(), FlowyError> {
+        let controller = self.clone();
+        FutureResult::new(async move {
+            controller.stop().await;
+            Ok(())
+        })
+    }
+
+    fn subscribe_connect_state(&self) -> Receiver<WSConnectState> { self.subscribe_state() }
+
+    fn reconnect(&self, count: usize) -> FutureResult<(), FlowyError> {
+        let cloned_ws = self.clone();
+        FutureResult::new(async move {
+            let _ = cloned_ws.retry(count).await.map_err(internal_error)?;
+            Ok(())
+        })
+    }
+
+    fn add_receiver(&self, receiver: Arc<dyn WSMessageReceiver>) -> Result<(), FlowyError> {
+        let _ = self.add_ws_message_receiver(receiver).map_err(internal_error)?;
+        Ok(())
+    }
+
+    fn sender(&self) -> Result<Arc<dyn FlowyWSSender>, FlowyError> {
+        let sender = self.ws_message_sender().map_err(internal_error)?;
+        Ok(sender)
+    }
+}
+
+impl FlowyWSSender for WSSender {
+    fn send(&self, msg: WebSocketRawMessage) -> Result<(), FlowyError> {
+        let _ = self.send_msg(msg).map_err(internal_error)?;
+        Ok(())
+    }
+}
diff --git a/frontend/rust-lib/flowy-net/src/services/http_ws/mod.rs b/frontend/rust-lib/flowy-net/src/services/http_ws/mod.rs
new file mode 100644
index 0000000000..7f637698c3
--- /dev/null
+++ b/frontend/rust-lib/flowy-net/src/services/http_ws/mod.rs
@@ -0,0 +1,3 @@
+pub use http_ws_impl::*;
+
+mod http_ws_impl;
diff --git a/frontend/rust-lib/flowy-virtual-net/src/mock/server.rs b/frontend/rust-lib/flowy-net/src/services/local_ws/local_server.rs
similarity index 56%
rename from frontend/rust-lib/flowy-virtual-net/src/mock/server.rs
rename to frontend/rust-lib/flowy-net/src/services/local_ws/local_server.rs
index 99d7c598e6..a01bdee74d 100644
--- a/frontend/rust-lib/flowy-virtual-net/src/mock/server.rs
+++ b/frontend/rust-lib/flowy-net/src/services/local_ws/local_server.rs
@@ -6,12 +6,16 @@ use flowy_collaboration::{
         ws::{DocumentClientWSData, DocumentClientWSDataType},
     },
     errors::CollaborateError,
-    protobuf::{RepeatedRevision as RepeatedRevisionPB, Revision as RevisionPB},
+    protobuf::{
+        DocumentClientWSData as DocumentClientWSDataPB,
+        RepeatedRevision as RepeatedRevisionPB,
+        Revision as RevisionPB,
+    },
     sync::*,
     util::repeated_revision_from_repeated_revision_pb,
 };
 use lib_infra::future::BoxResultFuture;
-use lib_ws::{WSModule, WebSocketRawMessage};
+use lib_ws::{WSMessageReceiver, WSModule, WebSocketRawMessage};
 use std::{
     convert::TryInto,
     fmt::{Debug, Formatter},
@@ -19,62 +23,76 @@ use std::{
 };
 use tokio::sync::mpsc;
 
-pub struct MockDocServer {
-    pub manager: Arc<ServerDocumentManager>,
+pub(crate) fn spawn_server(receivers: Arc<DashMap<WSModule, Arc<dyn WSMessageReceiver>>>) -> Arc<LocalDocumentServer> {
+    let (server_tx, mut server_rx) = mpsc::unbounded_channel();
+    let server = Arc::new(LocalDocumentServer::new(server_tx));
+    tokio::spawn(async move {
+        while let Some(message) = server_rx.recv().await {
+            match receivers.get(&message.module) {
+                None => tracing::error!("Can't find any handler for message: {:?}", message),
+                Some(handler) => handler.receive_message(message.clone()),
+            }
+        }
+    });
+    server
 }
 
-impl std::default::Default for MockDocServer {
-    fn default() -> Self {
-        let persistence = Arc::new(MockDocServerPersistence::default());
-        let manager = Arc::new(ServerDocumentManager::new(persistence));
-        MockDocServer { manager }
+pub struct LocalDocumentServer {
+    pub doc_manager: Arc<ServerDocumentManager>,
+    sender: mpsc::UnboundedSender<WebSocketRawMessage>,
+}
+
+impl LocalDocumentServer {
+    pub fn new(sender: mpsc::UnboundedSender<WebSocketRawMessage>) -> Self {
+        let persistence = Arc::new(LocalDocServerPersistence::default());
+        let doc_manager = Arc::new(ServerDocumentManager::new(persistence));
+        LocalDocumentServer { doc_manager, sender }
     }
-}
 
-impl MockDocServer {
-    pub async fn handle_client_data(
-        &self,
-        client_data: DocumentClientWSData,
-    ) -> Option<mpsc::Receiver<WebSocketRawMessage>> {
-        match client_data.ty {
+    pub async fn handle_client_data(&self, client_data: DocumentClientWSData) -> Result<(), CollaborateError> {
+        tracing::debug!(
+            "[LocalDocumentServer] receive client data: {}:{:?} ",
+            client_data.doc_id,
+            client_data.ty
+        );
+        let user = Arc::new(LocalDocumentUser {
+            user_id: "fake_user_id".to_owned(),
+            ws_sender: self.sender.clone(),
+        });
+        let ty = client_data.ty.clone();
+        let document_client_data: DocumentClientWSDataPB = client_data.try_into().unwrap();
+        match ty {
             DocumentClientWSDataType::ClientPushRev => {
-                let (tx, rx) = mpsc::channel(1);
-                let user = Arc::new(MockDocUser {
-                    user_id: "fake_user_id".to_owned(),
-                    tx,
-                });
-                let pb_client_data: flowy_collaboration::protobuf::DocumentClientWSData =
-                    client_data.try_into().unwrap();
-                self.manager
-                    .handle_client_revisions(user, pb_client_data)
-                    .await
-                    .unwrap();
-                Some(rx)
+                let _ = self
+                    .doc_manager
+                    .handle_client_revisions(user, document_client_data)
+                    .await?;
             },
             DocumentClientWSDataType::ClientPing => {
-                todo!()
+                let _ = self.doc_manager.handle_client_ping(user, document_client_data).await?;
             },
         }
+        Ok(())
     }
 }
 
-struct MockDocServerPersistence {
+struct LocalDocServerPersistence {
     inner: Arc<DashMap<String, DocumentInfo>>,
 }
 
-impl Debug for MockDocServerPersistence {
+impl Debug for LocalDocServerPersistence {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result { f.write_str("MockDocServerPersistence") }
 }
 
-impl std::default::Default for MockDocServerPersistence {
+impl std::default::Default for LocalDocServerPersistence {
     fn default() -> Self {
-        MockDocServerPersistence {
+        LocalDocServerPersistence {
             inner: Arc::new(DashMap::new()),
         }
     }
 }
 
-impl DocumentPersistence for MockDocServerPersistence {
+impl DocumentPersistence for LocalDocServerPersistence {
     fn read_doc(&self, doc_id: &str) -> BoxResultFuture<DocumentInfo, CollaborateError> {
         let inner = self.inner.clone();
         let doc_id = doc_id.to_owned();
@@ -118,16 +136,16 @@ impl DocumentPersistence for MockDocServerPersistence {
 }
 
 #[derive(Debug)]
-struct MockDocUser {
+struct LocalDocumentUser {
     user_id: String,
-    tx: mpsc::Sender<WebSocketRawMessage>,
+    ws_sender: mpsc::UnboundedSender<WebSocketRawMessage>,
 }
 
-impl RevisionUser for MockDocUser {
+impl RevisionUser for LocalDocumentUser {
     fn user_id(&self) -> String { self.user_id.clone() }
 
     fn receive(&self, resp: SyncResponse) {
-        let sender = self.tx.clone();
+        let sender = self.ws_sender.clone();
         tokio::spawn(async move {
             match resp {
                 SyncResponse::Pull(data) => {
@@ -136,7 +154,7 @@ impl RevisionUser for MockDocUser {
                         module: WSModule::Doc,
                         data: bytes.to_vec(),
                     };
-                    sender.send(msg).await.unwrap();
+                    sender.send(msg).unwrap();
                 },
                 SyncResponse::Push(data) => {
                     let bytes: Bytes = data.try_into().unwrap();
@@ -144,7 +162,7 @@ impl RevisionUser for MockDocUser {
                         module: WSModule::Doc,
                         data: bytes.to_vec(),
                     };
-                    sender.send(msg).await.unwrap();
+                    sender.send(msg).unwrap();
                 },
                 SyncResponse::Ack(data) => {
                     let bytes: Bytes = data.try_into().unwrap();
@@ -152,7 +170,7 @@ impl RevisionUser for MockDocUser {
                         module: WSModule::Doc,
                         data: bytes.to_vec(),
                     };
-                    sender.send(msg).await.unwrap();
+                    sender.send(msg).unwrap();
                 },
                 SyncResponse::NewRevision(_) => {
                     // unimplemented!()
diff --git a/frontend/rust-lib/flowy-net/src/services/local_ws/local_ws_impl.rs b/frontend/rust-lib/flowy-net/src/services/local_ws/local_ws_impl.rs
new file mode 100644
index 0000000000..f92d8f3b77
--- /dev/null
+++ b/frontend/rust-lib/flowy-net/src/services/local_ws/local_ws_impl.rs
@@ -0,0 +1,105 @@
+use bytes::Bytes;
+use dashmap::DashMap;
+use flowy_collaboration::entities::ws::*;
+use flowy_error::{internal_error, FlowyError};
+use lib_infra::future::FutureResult;
+use lib_ws::{WSConnectState, WSMessageReceiver, WSModule, WebSocketRawMessage};
+
+use crate::services::{
+    local_ws::local_server::{spawn_server, LocalDocumentServer},
+    ws_conn::{FlowyRawWebSocket, FlowyWSSender},
+};
+use std::{convert::TryFrom, sync::Arc};
+use tokio::sync::{broadcast, broadcast::Receiver};
+
+pub struct LocalWebSocket {
+    receivers: Arc<DashMap<WSModule, Arc<dyn WSMessageReceiver>>>,
+    state_sender: broadcast::Sender<WSConnectState>,
+    ws_sender: LocalWSSender,
+    server: Arc<LocalDocumentServer>,
+}
+
+impl std::default::Default for LocalWebSocket {
+    fn default() -> Self {
+        let (state_sender, _) = broadcast::channel(16);
+        let ws_sender = LocalWSSender::default();
+        let receivers = Arc::new(DashMap::new());
+        let server = spawn_server(receivers.clone());
+
+        LocalWebSocket {
+            receivers,
+            state_sender,
+            ws_sender,
+            server,
+        }
+    }
+}
+
+impl LocalWebSocket {
+    fn spawn_client(&self, _addr: String) {
+        let mut ws_receiver = self.ws_sender.subscribe();
+        let server = self.server.clone();
+        tokio::spawn(async move {
+            loop {
+                match ws_receiver.recv().await {
+                    Ok(message) => {
+                        let fut = || async {
+                            let bytes = Bytes::from(message.data);
+                            let client_data = DocumentClientWSData::try_from(bytes).map_err(internal_error)?;
+                            let _ = server.handle_client_data(client_data).await?;
+                            Ok::<(), FlowyError>(())
+                        };
+                        match fut().await {
+                            Ok(_) => {},
+                            Err(e) => tracing::error!("[LocalWebSocket] error: {:?}", e),
+                        }
+                    },
+                    Err(e) => tracing::error!("[LocalWebSocket] error: {}", e),
+                }
+            }
+        });
+    }
+}
+
+impl FlowyRawWebSocket for LocalWebSocket {
+    fn start_connect(&self, addr: String) -> FutureResult<(), FlowyError> {
+        self.spawn_client(addr);
+        FutureResult::new(async { Ok(()) })
+    }
+
+    fn stop_connect(&self) -> FutureResult<(), FlowyError> { FutureResult::new(async { Ok(()) }) }
+
+    fn subscribe_connect_state(&self) -> Receiver<WSConnectState> { self.state_sender.subscribe() }
+
+    fn reconnect(&self, _count: usize) -> FutureResult<(), FlowyError> { FutureResult::new(async { Ok(()) }) }
+
+    fn add_receiver(&self, receiver: Arc<dyn WSMessageReceiver>) -> Result<(), FlowyError> {
+        self.receivers.insert(receiver.source(), receiver);
+        Ok(())
+    }
+
+    fn sender(&self) -> Result<Arc<dyn FlowyWSSender>, FlowyError> { Ok(Arc::new(self.ws_sender.clone())) }
+}
+
+#[derive(Clone)]
+struct LocalWSSender(broadcast::Sender<WebSocketRawMessage>);
+
+impl std::default::Default for LocalWSSender {
+    fn default() -> Self {
+        let (tx, _) = broadcast::channel(16);
+        Self(tx)
+    }
+}
+
+impl FlowyWSSender for LocalWSSender {
+    fn send(&self, msg: WebSocketRawMessage) -> Result<(), FlowyError> {
+        let _ = self.0.send(msg);
+        Ok(())
+    }
+}
+
+impl std::ops::Deref for LocalWSSender {
+    type Target = broadcast::Sender<WebSocketRawMessage>;
+
+    fn deref(&self) -> &Self::Target { &self.0 }
+}
diff --git a/frontend/rust-lib/flowy-net/src/services/local_ws/mod.rs b/frontend/rust-lib/flowy-net/src/services/local_ws/mod.rs
new file mode 100644
index 0000000000..2191e9e0ce
--- /dev/null
+++ b/frontend/rust-lib/flowy-net/src/services/local_ws/mod.rs
@@ -0,0 +1,4 @@
+mod local_server;
+mod local_ws_impl;
+
+pub use local_ws_impl::*;
diff --git a/frontend/rust-lib/flowy-net/src/services/mod.rs b/frontend/rust-lib/flowy-net/src/services/mod.rs
index 2ffb9de4c7..5dcb797055 100644
--- a/frontend/rust-lib/flowy-net/src/services/mod.rs
+++ b/frontend/rust-lib/flowy-net/src/services/mod.rs
@@ -1,4 +1,3 @@
-pub mod ws;
-
-// #[cfg(feature = "flowy_unit_test")]
-// mod mock;
+pub mod http_ws;
+pub mod local_ws;
+pub mod ws_conn;
diff --git a/frontend/rust-lib/flowy-net/src/services/ws/mod.rs b/frontend/rust-lib/flowy-net/src/services/ws/mod.rs
deleted file mode 100644
index 2fe6a324b2..0000000000
--- a/frontend/rust-lib/flowy-net/src/services/ws/mod.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-pub use conn::*;
-
-mod conn;
diff --git a/frontend/rust-lib/flowy-net/src/services/ws/conn.rs b/frontend/rust-lib/flowy-net/src/services/ws_conn.rs
similarity index 59%
rename from frontend/rust-lib/flowy-net/src/services/ws/conn.rs
rename to frontend/rust-lib/flowy-net/src/services/ws_conn.rs
index 3e734cf1fc..5ee78765a8 100644
--- a/frontend/rust-lib/flowy-net/src/services/ws/conn.rs
+++ b/frontend/rust-lib/flowy-net/src/services/ws_conn.rs
@@ -1,37 +1,37 @@
 use crate::entities::NetworkType;
-use flowy_error::internal_error;
+
 pub use flowy_error::FlowyError;
 use lib_infra::future::FutureResult;
 pub use lib_ws::{WSConnectState, WSMessageReceiver, WebSocketRawMessage};
-use lib_ws::{WSController, WSSender};
+
 use parking_lot::RwLock;
 use std::sync::Arc;
-use tokio::sync::{broadcast, broadcast::Receiver};
+use tokio::sync::broadcast;
 
-pub trait FlowyWebSocket: Send + Sync {
+pub trait FlowyRawWebSocket: Send + Sync {
     fn start_connect(&self, addr: String) -> FutureResult<(), FlowyError>;
     fn stop_connect(&self) -> FutureResult<(), FlowyError>;
     fn subscribe_connect_state(&self) -> broadcast::Receiver<WSConnectState>;
     fn reconnect(&self, count: usize) -> FutureResult<(), FlowyError>;
-    fn add_message_receiver(&self, handler: Arc<dyn WSMessageReceiver>) -> Result<(), FlowyError>;
-    fn ws_sender(&self) -> Result<Arc<dyn FlowyWSSender>, FlowyError>;
+    fn add_receiver(&self, receiver: Arc<dyn WSMessageReceiver>) -> Result<(), FlowyError>;
+    fn sender(&self) -> Result<Arc<dyn FlowyWSSender>, FlowyError>;
 }
 
 pub trait FlowyWSSender: Send + Sync {
     fn send(&self, msg: WebSocketRawMessage) -> Result<(), FlowyError>;
 }
 
-pub struct FlowyWSConnect {
-    inner: Arc<dyn FlowyWebSocket>,
+pub struct FlowyWebSocketConnect {
+    inner: Arc<dyn FlowyRawWebSocket>,
     connect_type: RwLock<NetworkType>,
     status_notifier: broadcast::Sender<NetworkType>,
     addr: String,
 }
 
-impl FlowyWSConnect {
-    pub fn new(addr: String, ws: Arc<dyn FlowyWebSocket>) -> Self {
+impl FlowyWebSocketConnect {
+    pub fn new(addr: String, ws: Arc<dyn FlowyRawWebSocket>) -> Self {
         let (status_notifier, _) = broadcast::channel(10);
-        FlowyWSConnect {
+        FlowyWebSocketConnect {
             inner: ws,
             connect_type: RwLock::new(NetworkType::default()),
             status_notifier,
@@ -76,19 +76,19 @@ impl FlowyWSConnect {
 
     pub fn subscribe_network_ty(&self) -> broadcast::Receiver<NetworkType> { self.status_notifier.subscribe() }
 
-    pub fn add_receiver(&self, handler: Arc<dyn WSMessageReceiver>) -> Result<(), FlowyError> {
-        let _ = self.inner.add_message_receiver(handler)?;
+    pub fn add_ws_message_receiver(&self, receiver: Arc<dyn WSMessageReceiver>) -> Result<(), FlowyError> {
+        let _ = self.inner.add_receiver(receiver)?;
         Ok(())
     }
 
-    pub fn ws_sender(&self) -> Result<Arc<dyn FlowyWSSender>, FlowyError> { self.inner.ws_sender() }
+    pub fn ws_sender(&self) -> Result<Arc<dyn FlowyWSSender>, FlowyError> { self.inner.sender() }
 }
 
-#[tracing::instrument(level = "debug", skip(manager))]
-pub fn listen_on_websocket(manager: Arc<FlowyWSConnect>) {
+#[tracing::instrument(level = "debug", skip(ws_conn))]
+pub fn listen_on_websocket(ws_conn: Arc<FlowyWebSocketConnect>) {
     if cfg!(feature = "http_server") {
-        let ws = manager.inner.clone();
-        let mut notify = manager.inner.subscribe_connect_state();
+        let ws = ws_conn.inner.clone();
+        let mut notify = ws_conn.inner.subscribe_connect_state();
         let _ = tokio::spawn(async move {
             loop {
                 match notify.recv().await {
@@ -113,7 +113,7 @@ pub fn listen_on_websocket(manager: Arc<FlowyWSConnect>) {
     };
 }
 
-async fn retry_connect(ws: Arc<dyn FlowyWebSocket>, count: usize) {
+async fn retry_connect(ws: Arc<dyn FlowyRawWebSocket>, count: usize) {
     match ws.reconnect(count).await {
         Ok(_) => {},
         Err(e) => {
@@ -121,48 +121,3 @@ async fn retry_connect(ws: Arc<dyn FlowyWebSocket>, count: usize) {
         },
     }
 }
-
-impl FlowyWebSocket for Arc<WSController> {
-    fn start_connect(&self, addr: String) -> FutureResult<(), FlowyError> {
-        let cloned_ws = self.clone();
-        FutureResult::new(async move {
-            let _ = cloned_ws.start(addr).await.map_err(internal_error)?;
-            Ok(())
-        })
-    }
-
-    fn stop_connect(&self) -> FutureResult<(), FlowyError> {
-        let controller = self.clone();
-        FutureResult::new(async move {
-            controller.stop().await;
-            Ok(())
-        })
-    }
-
-    fn subscribe_connect_state(&self) -> Receiver<WSConnectState> { self.subscribe_state() }
-
-    fn reconnect(&self, count: usize) -> FutureResult<(), FlowyError> {
-        let cloned_ws = self.clone();
-        FutureResult::new(async move {
-            let _ = cloned_ws.retry(count).await.map_err(internal_error)?;
-            Ok(())
-        })
-    }
-
-    fn add_message_receiver(&self, handler: Arc<dyn WSMessageReceiver>) -> Result<(), FlowyError> {
-        let _ = self.add_receiver(handler).map_err(internal_error)?;
-        Ok(())
-    }
-
-    fn ws_sender(&self) -> Result<Arc<dyn FlowyWSSender>, FlowyError> {
-        let sender = self.sender().map_err(internal_error)?;
-        Ok(sender)
-    }
-}
-
-impl FlowyWSSender for WSSender {
-    fn send(&self, msg: WebSocketRawMessage) -> Result<(), FlowyError> {
-        let _ = self.send_msg(msg).map_err(internal_error)?;
-        Ok(())
-    }
-}
diff --git a/frontend/rust-lib/flowy-sdk/Cargo.toml b/frontend/rust-lib/flowy-sdk/Cargo.toml
index 8ecf0ae451..d1dcd821f4 100644
--- a/frontend/rust-lib/flowy-sdk/Cargo.toml
+++ b/frontend/rust-lib/flowy-sdk/Cargo.toml
@@ -10,7 +10,6 @@ lib-dispatch = { path = "../lib-dispatch" }
 lib-log = { path = "../lib-log" }
 flowy-user = { path = "../flowy-user" }
 flowy-net = { path = "../flowy-net" }
-flowy-virtual-net = { path = "../flowy-virtual-net" }
 flowy-core = { path = "../flowy-core", default-features = false }
 flowy-database = { path = "../flowy-database" }
 flowy-document = { path = "../flowy-document" }
diff --git a/frontend/rust-lib/flowy-sdk/src/deps_resolve/document_deps.rs b/frontend/rust-lib/flowy-sdk/src/deps_resolve/document_deps.rs
index 74ccb222d4..f12cdb2665 100644
--- a/frontend/rust-lib/flowy-sdk/src/deps_resolve/document_deps.rs
+++ b/frontend/rust-lib/flowy-sdk/src/deps_resolve/document_deps.rs
@@ -6,7 +6,7 @@ use flowy_document::{
     core::{DocumentWSReceivers, DocumentWebSocket, WSStateReceiver},
     errors::{internal_error, FlowyError},
 };
-use flowy_net::services::ws::FlowyWSConnect;
+use flowy_net::services::ws_conn::FlowyWebSocketConnect;
 use flowy_user::services::user::UserSession;
 use lib_ws::{WSMessageReceiver, WSModule, WebSocketRawMessage};
 use std::{convert::TryInto, path::Path, sync::Arc};
@@ -14,7 +14,7 @@ use std::{convert::TryInto, path::Path, sync::Arc};
 pub struct DocumentDepsResolver();
 impl DocumentDepsResolver {
     pub fn resolve(
-        ws_manager: Arc<FlowyWSConnect>,
+        ws_conn: Arc<FlowyWebSocketConnect>,
         user_session: Arc<UserSession>,
     ) -> (
         Arc<dyn DocumentUser>,
@@ -24,11 +24,11 @@ impl DocumentDepsResolver {
         let user = Arc::new(DocumentUserImpl { user: user_session });
 
         let ws_sender = Arc::new(DocumentWebSocketAdapter {
-            ws_manager: ws_manager.clone(),
+            ws_conn: ws_conn.clone(),
         });
         let ws_receivers = Arc::new(DocumentWSReceivers::new());
         let receiver = Arc::new(WSMessageReceiverAdaptor(ws_receivers.clone()));
-        ws_manager.add_receiver(receiver).unwrap();
+        ws_conn.add_ws_message_receiver(receiver).unwrap();
         (user, ws_receivers, ws_sender)
     }
 }
@@ -61,7 +61,7 @@ impl DocumentUser for DocumentUserImpl {
 }
 
 struct DocumentWebSocketAdapter {
-    ws_manager: Arc<FlowyWSConnect>,
+    ws_conn: Arc<FlowyWebSocketConnect>,
 }
 
 impl DocumentWebSocket for DocumentWebSocketAdapter {
@@ -71,13 +71,12 @@ impl DocumentWebSocket for DocumentWebSocketAdapter {
             module: WSModule::Doc,
             data: bytes.to_vec(),
         };
-        let sender = self.ws_manager.ws_sender().map_err(internal_error)?;
+        let sender = self.ws_conn.ws_sender().map_err(internal_error)?;
         sender.send(msg).map_err(internal_error)?;
-
         Ok(())
     }
 
-    fn subscribe_state_changed(&self) -> WSStateReceiver { self.ws_manager.subscribe_websocket_state() }
+    fn subscribe_state_changed(&self) -> WSStateReceiver { self.ws_conn.subscribe_websocket_state() }
 }
 
 struct WSMessageReceiverAdaptor(Arc<DocumentWSReceivers>);
diff --git a/frontend/rust-lib/flowy-sdk/src/lib.rs b/frontend/rust-lib/flowy-sdk/src/lib.rs
index bca2760b16..26a4d7468c 100644
--- a/frontend/rust-lib/flowy-sdk/src/lib.rs
+++ b/frontend/rust-lib/flowy-sdk/src/lib.rs
@@ -6,40 +6,63 @@ use flowy_core::{context::CoreContext, errors::FlowyError, module::init_core};
 use flowy_document::context::DocumentContext;
 use flowy_net::{
     entities::NetworkType,
-    services::ws::{listen_on_websocket, FlowyWSConnect, FlowyWebSocket},
+    services::{
+        local_ws::LocalWebSocket,
+        ws_conn::{listen_on_websocket, FlowyRawWebSocket, FlowyWebSocketConnect},
+    },
 };
 use flowy_user::{
     prelude::UserStatus,
     services::user::{UserSession, UserSessionConfig},
 };
-use flowy_virtual_net::local_web_socket;
 use lib_dispatch::prelude::*;
 use lib_ws::WSController;
 use module::mk_modules;
 pub use module::*;
-use std::sync::{
-    atomic::{AtomicBool, Ordering},
-    Arc,
+use std::{
+    fmt,
+    sync::{
+        atomic::{AtomicBool, Ordering},
+        Arc,
+    },
 };
 use tokio::sync::broadcast;
 
 static INIT_LOG: AtomicBool = AtomicBool::new(false);
 
-#[derive(Debug, Clone)]
+#[derive(Clone)]
 pub struct FlowySDKConfig {
     name: String,
     root: String,
     log_filter: String,
     server_config: ClientServerConfiguration,
+    ws: Arc<dyn FlowyRawWebSocket>,
+}
+
+impl fmt::Debug for FlowySDKConfig {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("FlowySDKConfig")
+            .field("name", &self.name)
+            .field("root", &self.root)
+            .field("server_config", &self.server_config)
+            .finish()
+    }
 }
 
 impl FlowySDKConfig {
-    pub fn new(root: &str, server_config: ClientServerConfiguration, name: &str) -> Self {
+    pub fn new(
+        root: &str,
+        server_config: ClientServerConfiguration,
+        name: &str,
+        ws: Option<Arc<dyn FlowyRawWebSocket>>,
+    ) -> Self {
+        let ws = ws.unwrap_or_else(default_web_socket);
         FlowySDKConfig {
             name: name.to_owned(),
             root: root.to_owned(),
             log_filter: crate_log_filter(None),
             server_config,
+            ws,
         }
     }
 
@@ -73,7 +96,7 @@ pub struct FlowySDK {
     pub document_ctx: Arc<DocumentContext>,
     pub core: Arc<CoreContext>,
     pub dispatcher: Arc<EventDispatcher>,
-    pub ws_manager: Arc<FlowyWSConnect>,
+    pub ws_conn: Arc<FlowyWebSocketConnect>,
 }
 
 impl FlowySDK {
@@ -82,21 +105,18 @@ impl FlowySDK {
         init_kv(&config.root);
         tracing::debug!("🔥 {:?}", config);
 
-        let ws: Arc<dyn FlowyWebSocket> = if cfg!(feature = "http_server") {
-            Arc::new(Arc::new(WSController::new()))
-        } else {
-            local_web_socket()
-        };
-
-        let ws_manager = Arc::new(FlowyWSConnect::new(config.server_config.ws_addr(), ws));
+        let ws_conn = Arc::new(FlowyWebSocketConnect::new(
+            config.server_config.ws_addr(),
+            config.ws.clone(),
+        ));
         let user_session = mk_user_session(&config);
-        let flowy_document = mk_document(ws_manager.clone(), user_session.clone(), &config.server_config);
-        let core_ctx = mk_core_context(user_session.clone(), flowy_document.clone(), &config.server_config);
+        let flowy_document = mk_document(&ws_conn, &user_session, &config.server_config);
+        let core_ctx = mk_core_context(&user_session, &flowy_document, &config.server_config);
 
         //
-        let modules = mk_modules(ws_manager.clone(), core_ctx.clone(), user_session.clone());
+        let modules = mk_modules(&ws_conn, &core_ctx, &user_session);
         let dispatcher = Arc::new(EventDispatcher::construct(|| modules));
-        _init(&dispatcher, ws_manager.clone(), user_session.clone(), core_ctx.clone());
+        _init(&dispatcher, &ws_conn, &user_session, &core_ctx);
 
         Self {
             config,
@@ -104,7 +124,7 @@ impl FlowySDK {
             document_ctx: flowy_document,
             core: core_ctx,
             dispatcher,
-            ws_manager,
+            ws_conn,
         }
     }
 
@@ -113,18 +133,21 @@ impl FlowySDK {
 
 fn _init(
     dispatch: &EventDispatcher,
-    ws_manager: Arc<FlowyWSConnect>,
-    user_session: Arc<UserSession>,
-    core: Arc<CoreContext>,
+    ws_conn: &Arc<FlowyWebSocketConnect>,
+    user_session: &Arc<UserSession>,
+    core: &Arc<CoreContext>,
 ) {
     let subscribe_user_status = user_session.notifier.subscribe_user_status();
-    let subscribe_network_type = ws_manager.subscribe_network_ty();
+    let subscribe_network_type = ws_conn.subscribe_network_ty();
+    let core = core.clone();
     let cloned_core = core.clone();
+    let user_session = user_session.clone();
+    let ws_conn = ws_conn.clone();
 
     dispatch.spawn(async move {
         user_session.init();
-        listen_on_websocket(ws_manager.clone());
-        _listen_user_status(ws_manager.clone(), subscribe_user_status, core.clone()).await;
+        listen_on_websocket(ws_conn.clone());
+        _listen_user_status(ws_conn.clone(), subscribe_user_status, core.clone()).await;
     });
 
     dispatch.spawn(async move {
@@ -133,7 +156,7 @@ fn _init(
 }
 
 async fn _listen_user_status(
-    ws_manager: Arc<FlowyWSConnect>,
+    ws_conn: Arc<FlowyWebSocketConnect>,
     mut subscribe: broadcast::Receiver<UserStatus>,
     core: Arc<CoreContext>,
 ) {
@@ -142,19 +165,19 @@ async fn _listen_user_status(
             match status {
                 UserStatus::Login { token } => {
                     let _ = core.user_did_sign_in(&token).await?;
-                    let _ = ws_manager.start(token).await?;
+                    let _ = ws_conn.start(token).await?;
                 },
                 UserStatus::Logout { .. } => {
                     core.user_did_logout().await;
-                    let _ = ws_manager.stop().await;
+                    let _ = ws_conn.stop().await;
                 },
                 UserStatus::Expired { .. } => {
                     core.user_session_expired().await;
-                    let _ = ws_manager.stop().await;
+                    let _ = ws_conn.stop().await;
                 },
                 UserStatus::SignUp { profile, ret } => {
                     let _ = core.user_did_sign_up(&profile.token).await?;
-                    let _ = ws_manager.start(profile.token.clone()).await?;
+                    let _ = ws_conn.start(profile.token.clone()).await?;
                     let _ = ret.send(());
                 },
             }
@@ -198,20 +221,28 @@ fn mk_user_session(config: &FlowySDKConfig) -> Arc<UserSession> {
 }
 
 fn mk_core_context(
-    user_session: Arc<UserSession>,
-    flowy_document: Arc<DocumentContext>,
+    user_session: &Arc<UserSession>,
+    flowy_document: &Arc<DocumentContext>,
     server_config: &ClientServerConfiguration,
 ) -> Arc<CoreContext> {
-    let workspace_deps = WorkspaceDepsResolver::new(user_session);
+    let workspace_deps = WorkspaceDepsResolver::new(user_session.clone());
     let (user, database) = workspace_deps.split_into();
-    init_core(user, database, flowy_document, server_config)
+    init_core(user, database, flowy_document.clone(), server_config)
+}
+
+fn default_web_socket() -> Arc<dyn FlowyRawWebSocket> {
+    if cfg!(feature = "http_server") {
+        Arc::new(Arc::new(WSController::new()))
+    } else {
+        Arc::new(LocalWebSocket::default())
+    }
 }
 
 pub fn mk_document(
-    ws_manager: Arc<FlowyWSConnect>,
-    user_session: Arc<UserSession>,
+    ws_manager: &Arc<FlowyWebSocketConnect>,
+    user_session: &Arc<UserSession>,
     server_config: &ClientServerConfiguration,
 ) -> Arc<DocumentContext> {
-    let (user, ws_receivers, ws_sender) = DocumentDepsResolver::resolve(ws_manager, user_session);
+    let (user, ws_receivers, ws_sender) = DocumentDepsResolver::resolve(ws_manager.clone(), user_session.clone());
     Arc::new(DocumentContext::new(user, ws_receivers, ws_sender, server_config))
 }
diff --git a/frontend/rust-lib/flowy-sdk/src/module.rs b/frontend/rust-lib/flowy-sdk/src/module.rs
index af6a7ce455..7f2c9c5691 100644
--- a/frontend/rust-lib/flowy-sdk/src/module.rs
+++ b/frontend/rust-lib/flowy-sdk/src/module.rs
@@ -1,17 +1,17 @@
 use flowy_core::context::CoreContext;
-use flowy_net::services::ws::FlowyWSConnect;
+use flowy_net::services::ws_conn::FlowyWebSocketConnect;
 use flowy_user::services::user::UserSession;
 use lib_dispatch::prelude::Module;
 use std::sync::Arc;
 
 pub fn mk_modules(
-    ws_manager: Arc<FlowyWSConnect>,
-    core: Arc<CoreContext>,
-    user_session: Arc<UserSession>,
+    ws_conn: &Arc<FlowyWebSocketConnect>,
+    core: &Arc<CoreContext>,
+    user_session: &Arc<UserSession>,
 ) -> Vec<Module> {
-    let user_module = mk_user_module(user_session);
-    let core_module = mk_core_module(core);
-    let network_module = mk_network_module(ws_manager);
+    let user_module = mk_user_module(user_session.clone());
+    let core_module = mk_core_module(core.clone());
+    let network_module = mk_network_module(ws_conn.clone());
     vec![user_module, core_module, network_module]
 }
 
@@ -19,4 +19,4 @@ fn mk_user_module(user_session: Arc<UserSession>) -> Module { flowy_user::module
 
 fn mk_core_module(core: Arc<CoreContext>) -> Module { flowy_core::module::create(core) }
 
-fn mk_network_module(ws_manager: Arc<FlowyWSConnect>) -> Module { flowy_net::module::create(ws_manager) }
+fn mk_network_module(ws_conn: Arc<FlowyWebSocketConnect>) -> Module { flowy_net::module::create(ws_conn) }
diff --git a/frontend/rust-lib/flowy-test/Cargo.toml b/frontend/rust-lib/flowy-test/Cargo.toml
index 32c4a804a6..6798a18e5f 100644
--- a/frontend/rust-lib/flowy-test/Cargo.toml
+++ b/frontend/rust-lib/flowy-test/Cargo.toml
@@ -35,5 +35,4 @@ quickcheck_macros = "0.9.1"
 fake = "~2.3.0"
 claim = "0.4.0"
 futures = "0.3.15"
-serial_test = "0.5.1"
-flowy-virtual-net = { path = "../flowy-virtual-net", features = ["flowy_unit_test"] }
\ No newline at end of file
+serial_test = "0.5.1"
\ No newline at end of file
diff --git a/frontend/rust-lib/flowy-test/src/doc_script.rs b/frontend/rust-lib/flowy-test/src/doc_script.rs
index 4111b9eac6..8e1772b244 100644
--- a/frontend/rust-lib/flowy-test/src/doc_script.rs
+++ b/frontend/rust-lib/flowy-test/src/doc_script.rs
@@ -1,4 +1,5 @@
 use crate::{helper::ViewTest, FlowySDKTest};
+use backend_service::configuration::get_client_server_configuration;
 use flowy_collaboration::entities::revision::RevisionState;
 use flowy_document::core::{edit::ClientDocumentEditor, SYNC_INTERVAL_IN_MILLIS};
 use lib_ot::{core::Interval, rich_text::RichTextDelta};
@@ -6,8 +7,6 @@ use std::sync::Arc;
 use tokio::time::{sleep, Duration};
 
 pub enum EditorScript {
-    StartWs,
-    StopWs,
     InsertText(&'static str, usize),
     Delete(Interval),
     Replace(Interval, &'static str),
@@ -16,8 +15,6 @@ pub enum EditorScript {
     AssertNextRevId(Option<i64>),
     AssertCurrentRevId(i64),
     AssertJson(&'static str),
-
-    WaitSyncFinished,
 }
 
 pub struct EditorTest {
@@ -27,10 +24,11 @@ pub struct EditorTest {
 
 impl EditorTest {
     pub async fn new() -> Self {
-        let sdk = FlowySDKTest::setup();
+        let server_config = get_client_server_configuration().unwrap();
+        let sdk = FlowySDKTest::new(server_config, None);
         let _ = sdk.init_user().await;
         let test = ViewTest::new(&sdk).await;
-        let editor = sdk.document_ctx.controller.open(&test.view.id).await.unwrap();
+        let editor = sdk.document_ctx.controller.open_document(&test.view.id).await.unwrap();
         Self { sdk, editor }
     }
 
@@ -46,17 +44,11 @@ impl EditorTest {
         let rev_manager = self.editor.rev_manager();
         let cache = rev_manager.revision_cache();
         let _user_id = self.sdk.user_session.user_id().unwrap();
-        let ws_manager = self.sdk.ws_manager.clone();
-        let token = self.sdk.user_session.token().unwrap();
+        // let ws_manager = self.sdk.ws_conn.clone();
+        // let token = self.sdk.user_session.token().unwrap();
         let wait_millis = 2 * SYNC_INTERVAL_IN_MILLIS;
 
         match script {
-            EditorScript::StartWs => {
-                ws_manager.start(token.clone()).await.unwrap();
-            },
-            EditorScript::StopWs => {
-                ws_manager.stop().await;
-            },
             EditorScript::InsertText(s, offset) => {
                 self.editor.insert(offset, s).await.unwrap();
             },
@@ -91,10 +83,6 @@ impl EditorTest {
                 }
                 assert_eq!(expected_delta, delta);
             },
-            EditorScript::WaitSyncFinished => {
-                // Workaround: just wait two seconds
-                sleep(Duration::from_millis(2000)).await;
-            },
         }
         sleep(Duration::from_millis(wait_millis)).await;
     }
diff --git a/frontend/rust-lib/flowy-test/src/helper.rs b/frontend/rust-lib/flowy-test/src/helper.rs
index 52e6805791..fc51050b92 100644
--- a/frontend/rust-lib/flowy-test/src/helper.rs
+++ b/frontend/rust-lib/flowy-test/src/helper.rs
@@ -28,7 +28,7 @@ pub struct WorkspaceTest {
 
 impl WorkspaceTest {
     pub async fn new() -> Self {
-        let sdk = FlowySDKTest::setup();
+        let sdk = FlowySDKTest::default();
         let _ = sdk.init_user().await;
         let workspace = create_workspace(&sdk, "Workspace", "").await;
         open_workspace(&sdk, &workspace.id).await;
@@ -45,7 +45,7 @@ pub struct AppTest {
 
 impl AppTest {
     pub async fn new() -> Self {
-        let sdk = FlowySDKTest::setup();
+        let sdk = FlowySDKTest::default();
         let _ = sdk.init_user().await;
         let workspace = create_workspace(&sdk, "Workspace", "").await;
         open_workspace(&sdk, &workspace.id).await;
diff --git a/frontend/rust-lib/flowy-test/src/lib.rs b/frontend/rust-lib/flowy-test/src/lib.rs
index 44514e01ab..12ece7b4ff 100644
--- a/frontend/rust-lib/flowy-test/src/lib.rs
+++ b/frontend/rust-lib/flowy-test/src/lib.rs
@@ -4,9 +4,11 @@ pub mod helper;
 
 use crate::helper::*;
 use backend_service::configuration::{get_client_server_configuration, ClientServerConfiguration};
+use flowy_net::services::ws_conn::FlowyRawWebSocket;
 use flowy_sdk::{FlowySDK, FlowySDKConfig};
 use flowy_user::entities::UserProfile;
 use lib_infra::uuid_string;
+use std::sync::Arc;
 
 pub mod prelude {
     pub use crate::{event_builder::*, helper::*, *};
@@ -14,36 +16,42 @@ pub mod prelude {
 }
 
 #[derive(Clone)]
-pub struct FlowySDKTest(pub FlowySDK);
+pub struct FlowySDKTest {
+    pub inner: FlowySDK,
+    pub ws: Option<Arc<dyn FlowyRawWebSocket>>,
+}
 
 impl std::ops::Deref for FlowySDKTest {
     type Target = FlowySDK;
 
-    fn deref(&self) -> &Self::Target { &self.0 }
+    fn deref(&self) -> &Self::Target { &self.inner }
 }
 
-impl FlowySDKTest {
-    pub fn setup() -> Self {
+impl std::default::Default for FlowySDKTest {
+    fn default() -> Self {
         let server_config = get_client_server_configuration().unwrap();
-        let sdk = Self::setup_with(server_config);
+        let sdk = Self::new(server_config, None);
         std::mem::forget(sdk.dispatcher());
         sdk
     }
+}
 
-    pub fn setup_with(server_config: ClientServerConfiguration) -> Self {
-        let config = FlowySDKConfig::new(&root_dir(), server_config, &uuid_string()).log_filter("debug");
+impl FlowySDKTest {
+    pub fn new(server_config: ClientServerConfiguration, ws: Option<Arc<dyn FlowyRawWebSocket>>) -> Self {
+        let config = FlowySDKConfig::new(&root_dir(), server_config, &uuid_string(), None).log_filter("debug");
         let sdk = FlowySDK::new(config);
-        Self(sdk)
+        std::mem::forget(sdk.dispatcher());
+        Self { inner: sdk, ws }
     }
 
     pub async fn sign_up(&self) -> SignUpContext {
-        let context = async_sign_up(self.0.dispatcher()).await;
+        let context = async_sign_up(self.inner.dispatcher()).await;
         context
     }
 
     pub async fn init_user(&self) -> UserProfile {
-        let context = async_sign_up(self.0.dispatcher()).await;
-        init_user_setting(self.0.dispatcher()).await;
+        let context = async_sign_up(self.inner.dispatcher()).await;
+        init_user_setting(self.inner.dispatcher()).await;
         context.user_profile
     }
 }
diff --git a/frontend/rust-lib/flowy-test/tests/main.rs b/frontend/rust-lib/flowy-test/tests/main.rs
index 67cf0d2b80..3eb8b414b2 100644
--- a/frontend/rust-lib/flowy-test/tests/main.rs
+++ b/frontend/rust-lib/flowy-test/tests/main.rs
@@ -1 +1 @@
-// mod revision_test;
+mod revision_test;
diff --git a/frontend/rust-lib/flowy-test/tests/revision_test.rs b/frontend/rust-lib/flowy-test/tests/revision_test.rs
index 49b2e47236..2751c86b0a 100644
--- a/frontend/rust-lib/flowy-test/tests/revision_test.rs
+++ b/frontend/rust-lib/flowy-test/tests/revision_test.rs
@@ -17,11 +17,8 @@ async fn doc_sync_test() {
 async fn doc_sync_retry_ws_conn() {
     let scripts = vec![
         InsertText("1", 0),
-        StopWs,
         InsertText("2", 1),
         InsertText("3", 2),
-        StartWs,
-        WaitSyncFinished,
         AssertRevisionState(2, RevisionState::Ack),
         AssertRevisionState(3, RevisionState::Ack),
         AssertNextRevId(None),
diff --git a/frontend/rust-lib/flowy-user/tests/event/auth_test.rs b/frontend/rust-lib/flowy-user/tests/event/auth_test.rs
index a0490927af..899eb48731 100644
--- a/frontend/rust-lib/flowy-user/tests/event/auth_test.rs
+++ b/frontend/rust-lib/flowy-user/tests/event/auth_test.rs
@@ -5,7 +5,7 @@ use flowy_user::{errors::ErrorCode, event::UserEvent::*, prelude::*};
 #[tokio::test]
 async fn sign_up_with_invalid_email() {
     for email in invalid_email_test_case() {
-        let sdk = FlowySDKTest::setup();
+        let sdk = FlowySDKTest::default();
         let request = SignUpRequest {
             email: email.to_string(),
             name: valid_name(),
@@ -27,7 +27,7 @@ async fn sign_up_with_invalid_email() {
 #[tokio::test]
 async fn sign_up_with_invalid_password() {
     for password in invalid_password_test_case() {
-        let sdk = FlowySDKTest::setup();
+        let sdk = FlowySDKTest::default();
         let request = SignUpRequest {
             email: random_email(),
             name: valid_name(),
@@ -45,7 +45,7 @@ async fn sign_up_with_invalid_password() {
 
 #[tokio::test]
 async fn sign_in_success() {
-    let test = FlowySDKTest::setup();
+    let test = FlowySDKTest::default();
     let _ = UserModuleEventBuilder::new(test.clone()).event(SignOut).sync_send();
     let sign_up_context = test.sign_up().await;
 
@@ -67,7 +67,7 @@ async fn sign_in_success() {
 #[tokio::test]
 async fn sign_in_with_invalid_email() {
     for email in invalid_email_test_case() {
-        let sdk = FlowySDKTest::setup();
+        let sdk = FlowySDKTest::default();
         let request = SignInRequest {
             email: email.to_string(),
             password: login_password(),
@@ -90,7 +90,7 @@ async fn sign_in_with_invalid_email() {
 #[tokio::test]
 async fn sign_in_with_invalid_password() {
     for password in invalid_password_test_case() {
-        let sdk = FlowySDKTest::setup();
+        let sdk = FlowySDKTest::default();
 
         let request = SignInRequest {
             email: random_email(),
diff --git a/frontend/rust-lib/flowy-user/tests/event/user_profile_test.rs b/frontend/rust-lib/flowy-user/tests/event/user_profile_test.rs
index 15923b0125..9fef50600f 100644
--- a/frontend/rust-lib/flowy-user/tests/event/user_profile_test.rs
+++ b/frontend/rust-lib/flowy-user/tests/event/user_profile_test.rs
@@ -6,7 +6,7 @@ use serial_test::*;
 
 #[tokio::test]
 async fn user_profile_get_failed() {
-    let sdk = FlowySDKTest::setup();
+    let sdk = FlowySDKTest::default();
     let result = UserModuleEventBuilder::new(sdk)
         .event(GetUserProfile)
         .assert_error()
@@ -18,7 +18,7 @@ async fn user_profile_get_failed() {
 #[tokio::test]
 #[serial]
 async fn user_profile_get() {
-    let test = FlowySDKTest::setup();
+    let test = FlowySDKTest::default();
     let user_profile = test.init_user().await;
     let user = UserModuleEventBuilder::new(test.clone())
         .event(GetUserProfile)
@@ -30,7 +30,7 @@ async fn user_profile_get() {
 #[tokio::test]
 #[serial]
 async fn user_update_with_name() {
-    let sdk = FlowySDKTest::setup();
+    let sdk = FlowySDKTest::default();
     let user = sdk.init_user().await;
     let new_name = "hello_world".to_owned();
     let request = UpdateUserRequest::new(&user.id).name(&new_name);
@@ -51,7 +51,7 @@ async fn user_update_with_name() {
 #[tokio::test]
 #[serial]
 async fn user_update_with_email() {
-    let sdk = FlowySDKTest::setup();
+    let sdk = FlowySDKTest::default();
     let user = sdk.init_user().await;
     let new_email = format!("{}@gmail.com", uuid_string());
     let request = UpdateUserRequest::new(&user.id).email(&new_email);
@@ -71,7 +71,7 @@ async fn user_update_with_email() {
 #[tokio::test]
 #[serial]
 async fn user_update_with_password() {
-    let sdk = FlowySDKTest::setup();
+    let sdk = FlowySDKTest::default();
     let user = sdk.init_user().await;
     let new_password = "H123world!".to_owned();
     let request = UpdateUserRequest::new(&user.id).password(&new_password);
@@ -86,7 +86,7 @@ async fn user_update_with_password() {
 #[tokio::test]
 #[serial]
 async fn user_update_with_invalid_email() {
-    let test = FlowySDKTest::setup();
+    let test = FlowySDKTest::default();
     let user = test.init_user().await;
     for email in invalid_email_test_case() {
         let request = UpdateUserRequest::new(&user.id).email(&email);
@@ -105,7 +105,7 @@ async fn user_update_with_invalid_email() {
 #[tokio::test]
 #[serial]
 async fn user_update_with_invalid_password() {
-    let test = FlowySDKTest::setup();
+    let test = FlowySDKTest::default();
     let user = test.init_user().await;
     for password in invalid_password_test_case() {
         let request = UpdateUserRequest::new(&user.id).password(&password);
@@ -121,7 +121,7 @@ async fn user_update_with_invalid_password() {
 #[tokio::test]
 #[serial]
 async fn user_update_with_invalid_name() {
-    let test = FlowySDKTest::setup();
+    let test = FlowySDKTest::default();
     let user = test.init_user().await;
     let request = UpdateUserRequest::new(&user.id).name("");
     UserModuleEventBuilder::new(test.clone())
diff --git a/frontend/rust-lib/flowy-virtual-net/Cargo.toml b/frontend/rust-lib/flowy-virtual-net/Cargo.toml
deleted file mode 100644
index cbc1b7ef87..0000000000
--- a/frontend/rust-lib/flowy-virtual-net/Cargo.toml
+++ /dev/null
@@ -1,23 +0,0 @@
-[package]
-name = "flowy-virtual-net"
-version = "0.1.0"
-edition = "2018"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
-lib-ws = { path = "../../../shared-lib/lib-ws" }
-lib-infra = { path = "../../../shared-lib/lib-infra" }
-flowy-net = { path = "../flowy-net" }
-bytes = { version = "1.0" }
-parking_lot = "0.11"
-tokio = {version = "1", features = ["sync"]}
-tracing = { version = "0.1", features = ["log"] }
-
-# flowy-collaboration and dashmap would be optional
-flowy-collaboration = { path = "../../../shared-lib/flowy-collaboration"}
-dashmap = {version = "4.0"}
-
-[features]
-flowy_unit_test = []
-http_server = []
\ No newline at end of file
diff --git a/frontend/rust-lib/flowy-virtual-net/src/lib.rs b/frontend/rust-lib/flowy-virtual-net/src/lib.rs
deleted file mode 100644
index 8d1b774812..0000000000
--- a/frontend/rust-lib/flowy-virtual-net/src/lib.rs
+++ /dev/null
@@ -1,12 +0,0 @@
-use flowy_net::services::ws::FlowyWebSocket;
-use std::sync::Arc;
-mod ws;
-
-#[cfg(not(feature = "flowy_unit_test"))]
-pub fn local_web_socket() -> Arc<dyn FlowyWebSocket> { Arc::new(ws::LocalWebSocket::default()) }
-
-#[cfg(feature = "flowy_unit_test")]
-mod mock;
-
-#[cfg(feature = "flowy_unit_test")]
-pub fn local_web_socket() -> Arc<dyn FlowyWebSocket> { Arc::new(crate::mock::MockWebSocket::default()) }
diff --git a/frontend/rust-lib/flowy-virtual-net/src/mock/mod.rs b/frontend/rust-lib/flowy-virtual-net/src/mock/mod.rs
deleted file mode 100644
index 2066369bbb..0000000000
--- a/frontend/rust-lib/flowy-virtual-net/src/mock/mod.rs
+++ /dev/null
@@ -1,4 +0,0 @@
-mod server;
-mod ws_local;
-
-pub use ws_local::*;
diff --git a/frontend/rust-lib/flowy-virtual-net/src/mock/ws_local.rs b/frontend/rust-lib/flowy-virtual-net/src/mock/ws_local.rs
deleted file mode 100644
index 2af11e6241..0000000000
--- a/frontend/rust-lib/flowy-virtual-net/src/mock/ws_local.rs
+++ /dev/null
@@ -1,95 +0,0 @@
-use crate::mock::server::MockDocServer;
-use bytes::Bytes;
-use dashmap::DashMap;
-use flowy_collaboration::entities::ws::*;
-use flowy_net::services::ws::*;
-use lib_infra::future::FutureResult;
-use lib_ws::{WSModule, WebSocketRawMessage};
-use parking_lot::RwLock;
-use std::{convert::TryFrom, sync::Arc};
-use tokio::sync::{broadcast, broadcast::Receiver};
-
-pub struct MockWebSocket {
-    receivers: Arc<DashMap<WSModule, Arc<dyn WSMessageReceiver>>>,
-    state_sender: broadcast::Sender<WSConnectState>,
-    ws_sender: MockWSSender,
-    is_stop: Arc<RwLock<bool>>,
-    server: Arc<MockDocServer>,
-}
-
-impl std::default::Default for MockWebSocket {
-    fn default() -> Self {
-        let (state_sender, _) = broadcast::channel(16);
-        let (ws_sender, _) = broadcast::channel(16);
-        let server = Arc::new(MockDocServer::default());
-        MockWebSocket {
-            receivers: Arc::new(DashMap::new()),
-            state_sender,
-            ws_sender: MockWSSender(ws_sender),
-            is_stop: Arc::new(RwLock::new(false)),
-            server,
-        }
-    }
-}
-
-impl FlowyWebSocket for MockWebSocket {
-    fn start_connect(&self, _addr: String) -> FutureResult<(), FlowyError> {
-        *self.is_stop.write() = false;
-
-        let mut ws_receiver = self.ws_sender.subscribe();
-        let receivers = self.receivers.clone();
-        let is_stop = self.is_stop.clone();
-        let server = self.server.clone();
-        tokio::spawn(async move {
-            while let Ok(message) = ws_receiver.recv().await {
-                if *is_stop.read() {
-                    // do nothing
-                } else {
-                    let ws_data = DocumentClientWSData::try_from(Bytes::from(message.data.clone())).unwrap();
-
-                    if let Some(mut rx) = server.handle_client_data(ws_data).await {
-                        let new_ws_message = rx.recv().await.unwrap();
-                        match receivers.get(&new_ws_message.module) {
-                            None => tracing::error!("Can't find any handler for message: {:?}", new_ws_message),
-                            Some(handler) => handler.receive_message(new_ws_message.clone()),
-                        }
-                    }
-                }
-            }
-        });
-
-        FutureResult::new(async { Ok(()) })
-    }
-
-    fn stop_connect(&self) -> FutureResult<(), FlowyError> {
-        *self.is_stop.write() = true;
-        FutureResult::new(async { Ok(()) })
-    }
-
-    fn subscribe_connect_state(&self) -> Receiver<WSConnectState> { self.state_sender.subscribe() }
-
-    fn reconnect(&self, _count: usize) -> FutureResult<(), FlowyError> { FutureResult::new(async { Ok(()) }) }
-
-    fn add_message_receiver(&self, handler: Arc<dyn WSMessageReceiver>) -> Result<(), FlowyError> {
-        self.receivers.insert(handler.source(), handler);
-        Ok(())
-    }
-
-    fn ws_sender(&self) -> Result<Arc<dyn FlowyWSSender>, FlowyError> { Ok(Arc::new(self.ws_sender.clone())) }
-}
-
-#[derive(Clone)]
-pub struct MockWSSender(broadcast::Sender<WebSocketRawMessage>);
-
-impl FlowyWSSender for MockWSSender {
-    fn send(&self, msg: WebSocketRawMessage) -> Result<(), FlowyError> {
-        let _ = self.0.send(msg);
-        Ok(())
-    }
-}
-
-impl std::ops::Deref for MockWSSender {
-    type Target = broadcast::Sender<WebSocketRawMessage>;
-
-    fn deref(&self) -> &Self::Target { &self.0 }
-}
diff --git a/frontend/rust-lib/flowy-virtual-net/src/ws/mod.rs b/frontend/rust-lib/flowy-virtual-net/src/ws/mod.rs
deleted file mode 100644
index 637a2655af..0000000000
--- a/frontend/rust-lib/flowy-virtual-net/src/ws/mod.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-mod ws_local;
-
-pub use ws_local::*;
diff --git a/frontend/rust-lib/flowy-virtual-net/src/ws/ws_local.rs b/frontend/rust-lib/flowy-virtual-net/src/ws/ws_local.rs
deleted file mode 100644
index c50c415fc5..0000000000
--- a/frontend/rust-lib/flowy-virtual-net/src/ws/ws_local.rs
+++ /dev/null
@@ -1,55 +0,0 @@
-use flowy_net::services::ws::{
-    FlowyError,
-    FlowyWSSender,
-    FlowyWebSocket,
-    WSConnectState,
-    WSMessageReceiver,
-    WebSocketRawMessage,
-};
-use lib_infra::future::FutureResult;
-use std::sync::Arc;
-use tokio::sync::{broadcast, broadcast::Receiver};
-
-pub(crate) struct LocalWebSocket {
-    state_sender: broadcast::Sender<WSConnectState>,
-    ws_sender: LocalWSSender,
-}
-
-impl std::default::Default for LocalWebSocket {
-    fn default() -> Self {
-        let (state_sender, _) = broadcast::channel(16);
-        let (ws_sender, _) = broadcast::channel(16);
-        LocalWebSocket {
-            state_sender,
-            ws_sender: LocalWSSender(ws_sender),
-        }
-    }
-}
-
-impl FlowyWebSocket for LocalWebSocket {
-    fn start_connect(&self, _addr: String) -> FutureResult<(), FlowyError> { FutureResult::new(async { Ok(()) }) }
-
-    fn stop_connect(&self) -> FutureResult<(), FlowyError> { FutureResult::new(async { Ok(()) }) }
-
-    fn subscribe_connect_state(&self) -> Receiver<WSConnectState> { self.state_sender.subscribe() }
-
-    fn reconnect(&self, _count: usize) -> FutureResult<(), FlowyError> { FutureResult::new(async { Ok(()) }) }
-
-    fn add_message_receiver(&self, _handler: Arc<dyn WSMessageReceiver>) -> Result<(), FlowyError> { Ok(()) }
-
-    fn ws_sender(&self) -> Result<Arc<dyn FlowyWSSender>, FlowyError> { Ok(Arc::new(self.ws_sender.clone())) }
-}
-
-#[derive(Clone)]
-pub struct LocalWSSender(broadcast::Sender<WebSocketRawMessage>);
-impl FlowyWSSender for LocalWSSender {
-    fn send(&self, msg: WebSocketRawMessage) -> Result<(), FlowyError> {
-        let _ = self.0.send(msg);
-        Ok(())
-    }
-}
-
-impl std::ops::Deref for LocalWSSender {
-    type Target = broadcast::Sender<WebSocketRawMessage>;
-    fn deref(&self) -> &Self::Target { &self.0 }
-}
diff --git a/shared-lib/flowy-collaboration/src/sync/server.rs b/shared-lib/flowy-collaboration/src/sync/server.rs
index b1cecc1ecb..73148c88ac 100644
--- a/shared-lib/flowy-collaboration/src/sync/server.rs
+++ b/shared-lib/flowy-collaboration/src/sync/server.rs
@@ -123,11 +123,15 @@ impl ServerDocumentManager {
         }
 
         let mut write_guard = self.open_doc_map.write().await;
-        let doc = self.persistence.read_doc(doc_id).await.unwrap();
-        let handler = self.create_document_handler(doc).await.map_err(internal_error).unwrap();
-        write_guard.insert(doc_id.to_owned(), handler.clone());
-        drop(write_guard);
-        Some(handler)
+        match self.persistence.read_doc(doc_id).await {
+            Ok(doc) => {
+                let handler = self.create_document_handler(doc).await.map_err(internal_error).unwrap();
+                write_guard.insert(doc_id.to_owned(), handler.clone());
+                drop(write_guard);
+                Some(handler)
+            },
+            Err(_) => None,
+        }
     }
 
     #[tracing::instrument(level = "debug", skip(self, repeated_revision), err)]
diff --git a/shared-lib/lib-ws/src/ws.rs b/shared-lib/lib-ws/src/ws.rs
index 9824d42af5..386ec9b372 100644
--- a/shared-lib/lib-ws/src/ws.rs
+++ b/shared-lib/lib-ws/src/ws.rs
@@ -59,7 +59,7 @@ impl std::default::Default for WSController {
 impl WSController {
     pub fn new() -> Self { WSController::default() }
 
-    pub fn add_receiver(&self, handler: Arc<dyn WSMessageReceiver>) -> Result<(), WSError> {
+    pub fn add_ws_message_receiver(&self, handler: Arc<dyn WSMessageReceiver>) -> Result<(), WSError> {
         let source = handler.source();
         if self.handlers.contains_key(&source) {
             log::error!("WsSource's {:?} is already registered", source);
@@ -133,7 +133,7 @@ impl WSController {
 
     pub fn subscribe_state(&self) -> broadcast::Receiver<WSConnectState> { self.state_notify.subscribe() }
 
-    pub fn sender(&self) -> Result<Arc<WSSender>, WSError> {
+    pub fn ws_message_sender(&self) -> Result<Arc<WSSender>, WSError> {
         match self.sender_ctrl.read().sender() {
             None => Err(WSError::internal().context("WsSender is not initialized, should call connect first")),
             Some(sender) => Ok(sender),