diff --git a/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbenum.dart b/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbenum.dart
index d4764daa8c..55e51b76c7 100644
--- a/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbenum.dart
+++ b/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbenum.dart
@@ -12,12 +12,14 @@ import 'package:protobuf/protobuf.dart' as $pb;
 class ErrorCode extends $pb.ProtobufEnum {
   static const ErrorCode DocIdInvalid = ErrorCode._(0, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'DocIdInvalid');
   static const ErrorCode DocNotfound = ErrorCode._(1, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'DocNotfound');
+  static const ErrorCode WsConnectError = ErrorCode._(10, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'WsConnectError');
   static const ErrorCode UserUnauthorized = ErrorCode._(999, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'UserUnauthorized');
   static const ErrorCode InternalError = ErrorCode._(1000, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'InternalError');
 
   static const $core.List<ErrorCode> values = <ErrorCode> [
     DocIdInvalid,
     DocNotfound,
+    WsConnectError,
     UserUnauthorized,
     InternalError,
   ];
diff --git a/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbjson.dart b/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbjson.dart
index d2df076a1f..67e75c3fcd 100644
--- a/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbjson.dart
+++ b/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbjson.dart
@@ -14,13 +14,14 @@ const ErrorCode$json = const {
   '2': const [
     const {'1': 'DocIdInvalid', '2': 0},
     const {'1': 'DocNotfound', '2': 1},
+    const {'1': 'WsConnectError', '2': 10},
     const {'1': 'UserUnauthorized', '2': 999},
     const {'1': 'InternalError', '2': 1000},
   ],
 };
 
 /// Descriptor for `ErrorCode`. Decode as a `google.protobuf.EnumDescriptorProto`.
-final $typed_data.Uint8List errorCodeDescriptor = $convert.base64Decode('CglFcnJvckNvZGUSEAoMRG9jSWRJbnZhbGlkEAASDwoLRG9jTm90Zm91bmQQARIVChBVc2VyVW5hdXRob3JpemVkEOcHEhIKDUludGVybmFsRXJyb3IQ6Ac=');
+final $typed_data.Uint8List errorCodeDescriptor = $convert.base64Decode('CglFcnJvckNvZGUSEAoMRG9jSWRJbnZhbGlkEAASDwoLRG9jTm90Zm91bmQQARISCg5Xc0Nvbm5lY3RFcnJvchAKEhUKEFVzZXJVbmF1dGhvcml6ZWQQ5wcSEgoNSW50ZXJuYWxFcnJvchDoBw==');
 @$core.Deprecated('Use docErrorDescriptor instead')
 const DocError$json = const {
   '1': 'DocError',
diff --git a/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-workspace/errors.pbenum.dart b/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-workspace/errors.pbenum.dart
index e504fe2a04..2728c16cfe 100644
--- a/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-workspace/errors.pbenum.dart
+++ b/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-workspace/errors.pbenum.dart
@@ -22,6 +22,7 @@ class ErrorCode extends $pb.ProtobufEnum {
   static const ErrorCode ViewDescInvalid = ErrorCode._(23, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'ViewDescInvalid');
   static const ErrorCode ViewDataInvalid = ErrorCode._(24, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'ViewDataInvalid');
   static const ErrorCode UserUnauthorized = ErrorCode._(100, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'UserUnauthorized');
+  static const ErrorCode WsConnectError = ErrorCode._(200, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'WsConnectError');
   static const ErrorCode InternalError = ErrorCode._(1000, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'InternalError');
   static const ErrorCode RecordNotFound = ErrorCode._(1001, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'RecordNotFound');
 
@@ -38,6 +39,7 @@ class ErrorCode extends $pb.ProtobufEnum {
     ViewDescInvalid,
     ViewDataInvalid,
     UserUnauthorized,
+    WsConnectError,
     InternalError,
     RecordNotFound,
   ];
diff --git a/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-workspace/errors.pbjson.dart b/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-workspace/errors.pbjson.dart
index e5cfebcdd2..5a13aa5857 100644
--- a/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-workspace/errors.pbjson.dart
+++ b/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-workspace/errors.pbjson.dart
@@ -24,13 +24,14 @@ const ErrorCode$json = const {
     const {'1': 'ViewDescInvalid', '2': 23},
     const {'1': 'ViewDataInvalid', '2': 24},
     const {'1': 'UserUnauthorized', '2': 100},
+    const {'1': 'WsConnectError', '2': 200},
     const {'1': 'InternalError', '2': 1000},
     const {'1': 'RecordNotFound', '2': 1001},
   ],
 };
 
 /// Descriptor for `ErrorCode`. Decode as a `google.protobuf.EnumDescriptorProto`.
-final $typed_data.Uint8List errorCodeDescriptor = $convert.base64Decode('CglFcnJvckNvZGUSGAoUV29ya3NwYWNlTmFtZUludmFsaWQQABIWChJXb3Jrc3BhY2VJZEludmFsaWQQARIYChRBcHBDb2xvclN0eWxlSW52YWxpZBACEhgKFFdvcmtzcGFjZURlc2NJbnZhbGlkEAMSEAoMQXBwSWRJbnZhbGlkEAoSEgoOQXBwTmFtZUludmFsaWQQCxITCg9WaWV3TmFtZUludmFsaWQQFBIYChRWaWV3VGh1bWJuYWlsSW52YWxpZBAVEhEKDVZpZXdJZEludmFsaWQQFhITCg9WaWV3RGVzY0ludmFsaWQQFxITCg9WaWV3RGF0YUludmFsaWQQGBIUChBVc2VyVW5hdXRob3JpemVkEGQSEgoNSW50ZXJuYWxFcnJvchDoBxITCg5SZWNvcmROb3RGb3VuZBDpBw==');
+final $typed_data.Uint8List errorCodeDescriptor = $convert.base64Decode('CglFcnJvckNvZGUSGAoUV29ya3NwYWNlTmFtZUludmFsaWQQABIWChJXb3Jrc3BhY2VJZEludmFsaWQQARIYChRBcHBDb2xvclN0eWxlSW52YWxpZBACEhgKFFdvcmtzcGFjZURlc2NJbnZhbGlkEAMSEAoMQXBwSWRJbnZhbGlkEAoSEgoOQXBwTmFtZUludmFsaWQQCxITCg9WaWV3TmFtZUludmFsaWQQFBIYChRWaWV3VGh1bWJuYWlsSW52YWxpZBAVEhEKDVZpZXdJZEludmFsaWQQFhITCg9WaWV3RGVzY0ludmFsaWQQFxITCg9WaWV3RGF0YUludmFsaWQQGBIUChBVc2VyVW5hdXRob3JpemVkEGQSEwoOV3NDb25uZWN0RXJyb3IQyAESEgoNSW50ZXJuYWxFcnJvchDoBxITCg5SZWNvcmROb3RGb3VuZBDpBw==');
 @$core.Deprecated('Use workspaceErrorDescriptor instead')
 const WorkspaceError$json = const {
   '1': 'WorkspaceError',
diff --git a/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-ws/errors.pbenum.dart b/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-ws/errors.pbenum.dart
index ef8d4c2243..215409e69c 100644
--- a/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-ws/errors.pbenum.dart
+++ b/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-ws/errors.pbenum.dart
@@ -11,13 +11,11 @@ import 'package:protobuf/protobuf.dart' as $pb;
 
 class ErrorCode extends $pb.ProtobufEnum {
   static const ErrorCode InternalError = ErrorCode._(0, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'InternalError');
-  static const ErrorCode DuplicateSource = ErrorCode._(1, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'DuplicateSource');
-  static const ErrorCode UnsupportedMessage = ErrorCode._(2, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'UnsupportedMessage');
-  static const ErrorCode Unauthorized = ErrorCode._(3, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'Unauthorized');
+  static const ErrorCode UnsupportedMessage = ErrorCode._(1, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'UnsupportedMessage');
+  static const ErrorCode Unauthorized = ErrorCode._(2, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'Unauthorized');
 
   static const $core.List<ErrorCode> values = <ErrorCode> [
     InternalError,
-    DuplicateSource,
     UnsupportedMessage,
     Unauthorized,
   ];
diff --git a/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-ws/errors.pbjson.dart b/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-ws/errors.pbjson.dart
index 502a5002f2..c1039debcf 100644
--- a/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-ws/errors.pbjson.dart
+++ b/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-ws/errors.pbjson.dart
@@ -13,14 +13,13 @@ const ErrorCode$json = const {
   '1': 'ErrorCode',
   '2': const [
     const {'1': 'InternalError', '2': 0},
-    const {'1': 'DuplicateSource', '2': 1},
-    const {'1': 'UnsupportedMessage', '2': 2},
-    const {'1': 'Unauthorized', '2': 3},
+    const {'1': 'UnsupportedMessage', '2': 1},
+    const {'1': 'Unauthorized', '2': 2},
   ],
 };
 
 /// Descriptor for `ErrorCode`. Decode as a `google.protobuf.EnumDescriptorProto`.
-final $typed_data.Uint8List errorCodeDescriptor = $convert.base64Decode('CglFcnJvckNvZGUSEQoNSW50ZXJuYWxFcnJvchAAEhMKD0R1cGxpY2F0ZVNvdXJjZRABEhYKElVuc3VwcG9ydGVkTWVzc2FnZRACEhAKDFVuYXV0aG9yaXplZBAD');
+final $typed_data.Uint8List errorCodeDescriptor = $convert.base64Decode('CglFcnJvckNvZGUSEQoNSW50ZXJuYWxFcnJvchAAEhYKElVuc3VwcG9ydGVkTWVzc2FnZRABEhAKDFVuYXV0aG9yaXplZBAC');
 @$core.Deprecated('Use wsErrorDescriptor instead')
 const WsError$json = const {
   '1': 'WsError',
diff --git a/backend/src/service/ws_service/router.rs b/backend/src/service/ws_service/router.rs
index f97d059c33..027643cc7c 100644
--- a/backend/src/service/ws_service/router.rs
+++ b/backend/src/service/ws_service/router.rs
@@ -1,4 +1,4 @@
-use crate::service::ws_service::{entities::SessionId, WSClient, WSServer};
+use crate::service::ws_service::{WSClient, WSServer};
 use actix::Addr;
 
 use crate::service::user_service::LoggedUser;
diff --git a/backend/src/service/ws_service/ws_client.rs b/backend/src/service/ws_service/ws_client.rs
index 0d6279d883..a391e5ad0c 100644
--- a/backend/src/service/ws_service/ws_client.rs
+++ b/backend/src/service/ws_service/ws_client.rs
@@ -75,7 +75,7 @@ impl Actor for WSClient {
         self.server
             .send(connect)
             .into_actor(self)
-            .then(|res, client, _ctx| {
+            .then(|res, _client, _ctx| {
                 match res {
                     Ok(Ok(_)) => log::trace!("Send connect message to server success"),
                     Ok(Err(e)) => log::error!("Send connect message to server failed: {:?}", e),
diff --git a/rust-lib/flowy-document/Cargo.toml b/rust-lib/flowy-document/Cargo.toml
index a600ef7d5c..374035f7a8 100644
--- a/rust-lib/flowy-document/Cargo.toml
+++ b/rust-lib/flowy-document/Cargo.toml
@@ -29,6 +29,7 @@ bytes = { version = "1.0" }
 strum = "0.21"
 strum_macros = "0.21"
 dashmap = "4.0"
+parking_lot = "0.11"
 
 [dev-dependencies]
 flowy-test = { path = "../flowy-test" }
diff --git a/rust-lib/flowy-document/src/errors.rs b/rust-lib/flowy-document/src/errors.rs
index 4388e9eabb..599d73ac5e 100644
--- a/rust-lib/flowy-document/src/errors.rs
+++ b/rust-lib/flowy-document/src/errors.rs
@@ -40,6 +40,7 @@ impl DocError {
     static_doc_error!(internal, ErrorCode::InternalError);
     static_doc_error!(not_found, ErrorCode::DocNotfound);
     static_doc_error!(unauthorized, ErrorCode::UserUnauthorized);
+    static_doc_error!(ws, ErrorCode::WsConnectError);
 }
 
 pub fn internal_error<T>(e: T) -> DocError
@@ -57,6 +58,9 @@ pub enum ErrorCode {
     #[display(fmt = "DocNotfound")]
     DocNotfound      = 1,
 
+    #[display(fmt = "Document websocket error")]
+    WsConnectError   = 10,
+
     #[display(fmt = "UserUnauthorized")]
     UserUnauthorized = 999,
 
@@ -81,6 +85,10 @@ impl std::convert::From<flowy_ot::errors::OTError> for DocError {
     fn from(error: flowy_ot::errors::OTError) -> Self { DocError::internal().context(error) }
 }
 
+impl std::convert::From<std::io::Error> for DocError {
+    fn from(error: std::io::Error) -> Self { DocError::internal().context(error) }
+}
+
 // impl std::convert::From<::r2d2::Error> for DocError {
 //     fn from(error: r2d2::Error) -> Self {
 // ErrorBuilder::new(ErrorCode::InternalError).error(error).build() } }
diff --git a/rust-lib/flowy-document/src/lib.rs b/rust-lib/flowy-document/src/lib.rs
index 58ec6b8fb1..b2555e3a98 100644
--- a/rust-lib/flowy-document/src/lib.rs
+++ b/rust-lib/flowy-document/src/lib.rs
@@ -10,5 +10,8 @@ mod sql_tables;
 extern crate flowy_database;
 
 pub mod prelude {
-    pub use crate::{module::*, services::server::*};
+    pub use crate::{
+        module::*,
+        services::{server::*, ws_document::*},
+    };
 }
diff --git a/rust-lib/flowy-document/src/module.rs b/rust-lib/flowy-document/src/module.rs
index 5c4a38e643..e7f71a1c5c 100644
--- a/rust-lib/flowy-document/src/module.rs
+++ b/rust-lib/flowy-document/src/module.rs
@@ -1,35 +1,38 @@
 use crate::{
     errors::DocError,
-    services::{doc_cache::DocCache, server::construct_doc_server},
+    services::{doc_cache::OpenedDocumentCache, server::construct_doc_server},
 };
 
 use crate::{
     entities::doc::{ApplyChangesetParams, CreateDocParams, Doc, QueryDocParams, SaveDocParams},
-    services::doc_controller::DocController,
+    errors::internal_error,
+    services::{doc_controller::DocController, ws_document::WsDocument},
 };
+
+
 use diesel::SqliteConnection;
 use flowy_database::ConnectionPool;
-
-use crate::errors::internal_error;
-use std::sync::Arc;
+use parking_lot::RwLock;
+use std::{sync::Arc};
 
 pub trait DocumentUser: Send + Sync {
-    fn user_doc_dir(&self) -> Result<String, DocError>;
+    fn user_dir(&self) -> Result<String, DocError>;
     fn user_id(&self) -> Result<String, DocError>;
     fn token(&self) -> Result<String, DocError>;
 }
 
 pub struct FlowyDocument {
     controller: Arc<DocController>,
-    cache: Arc<DocCache>,
+    ws: Arc<RwLock<WsDocument>>,
+    cache: Arc<OpenedDocumentCache>,
 }
 
 impl FlowyDocument {
-    pub fn new(user: Arc<dyn DocumentUser>) -> FlowyDocument {
+    pub fn new(user: Arc<dyn DocumentUser>, ws: Arc<RwLock<WsDocument>>) -> FlowyDocument {
         let server = construct_doc_server();
-        let cache = Arc::new(DocCache::new());
+        let cache = Arc::new(OpenedDocumentCache::new());
         let controller = Arc::new(DocController::new(server.clone(), user.clone()));
-        Self { controller, cache }
+        Self { controller, cache, ws }
     }
 
     pub fn create(&self, params: CreateDocParams, conn: &SqliteConnection) -> Result<(), DocError> {
diff --git a/rust-lib/flowy-document/src/protobuf/model/errors.rs b/rust-lib/flowy-document/src/protobuf/model/errors.rs
index f23cfd75d3..9cc9c119ca 100644
--- a/rust-lib/flowy-document/src/protobuf/model/errors.rs
+++ b/rust-lib/flowy-document/src/protobuf/model/errors.rs
@@ -217,6 +217,7 @@ impl ::protobuf::reflect::ProtobufValue for DocError {
 pub enum ErrorCode {
     DocIdInvalid = 0,
     DocNotfound = 1,
+    WsConnectError = 10,
     UserUnauthorized = 999,
     InternalError = 1000,
 }
@@ -230,6 +231,7 @@ impl ::protobuf::ProtobufEnum for ErrorCode {
         match value {
             0 => ::std::option::Option::Some(ErrorCode::DocIdInvalid),
             1 => ::std::option::Option::Some(ErrorCode::DocNotfound),
+            10 => ::std::option::Option::Some(ErrorCode::WsConnectError),
             999 => ::std::option::Option::Some(ErrorCode::UserUnauthorized),
             1000 => ::std::option::Option::Some(ErrorCode::InternalError),
             _ => ::std::option::Option::None
@@ -240,6 +242,7 @@ impl ::protobuf::ProtobufEnum for ErrorCode {
         static values: &'static [ErrorCode] = &[
             ErrorCode::DocIdInvalid,
             ErrorCode::DocNotfound,
+            ErrorCode::WsConnectError,
             ErrorCode::UserUnauthorized,
             ErrorCode::InternalError,
         ];
@@ -271,26 +274,29 @@ impl ::protobuf::reflect::ProtobufValue for ErrorCode {
 
 static file_descriptor_proto_data: &'static [u8] = b"\
     \n\x0cerrors.proto\"<\n\x08DocError\x12\x1e\n\x04code\x18\x01\x20\x01(\
-    \x0e2\n.ErrorCodeR\x04code\x12\x10\n\x03msg\x18\x02\x20\x01(\tR\x03msg*Y\
+    \x0e2\n.ErrorCodeR\x04code\x12\x10\n\x03msg\x18\x02\x20\x01(\tR\x03msg*m\
     \n\tErrorCode\x12\x10\n\x0cDocIdInvalid\x10\0\x12\x0f\n\x0bDocNotfound\
-    \x10\x01\x12\x15\n\x10UserUnauthorized\x10\xe7\x07\x12\x12\n\rInternalEr\
-    ror\x10\xe8\x07J\xd4\x02\n\x06\x12\x04\0\0\x0b\x01\n\x08\n\x01\x0c\x12\
-    \x03\0\0\x12\n\n\n\x02\x04\0\x12\x04\x02\0\x05\x01\n\n\n\x03\x04\0\x01\
-    \x12\x03\x02\x08\x10\n\x0b\n\x04\x04\0\x02\0\x12\x03\x03\x04\x17\n\x0c\n\
-    \x05\x04\0\x02\0\x06\x12\x03\x03\x04\r\n\x0c\n\x05\x04\0\x02\0\x01\x12\
-    \x03\x03\x0e\x12\n\x0c\n\x05\x04\0\x02\0\x03\x12\x03\x03\x15\x16\n\x0b\n\
-    \x04\x04\0\x02\x01\x12\x03\x04\x04\x13\n\x0c\n\x05\x04\0\x02\x01\x05\x12\
-    \x03\x04\x04\n\n\x0c\n\x05\x04\0\x02\x01\x01\x12\x03\x04\x0b\x0e\n\x0c\n\
-    \x05\x04\0\x02\x01\x03\x12\x03\x04\x11\x12\n\n\n\x02\x05\0\x12\x04\x06\0\
-    \x0b\x01\n\n\n\x03\x05\0\x01\x12\x03\x06\x05\x0e\n\x0b\n\x04\x05\0\x02\0\
-    \x12\x03\x07\x04\x15\n\x0c\n\x05\x05\0\x02\0\x01\x12\x03\x07\x04\x10\n\
-    \x0c\n\x05\x05\0\x02\0\x02\x12\x03\x07\x13\x14\n\x0b\n\x04\x05\0\x02\x01\
-    \x12\x03\x08\x04\x14\n\x0c\n\x05\x05\0\x02\x01\x01\x12\x03\x08\x04\x0f\n\
-    \x0c\n\x05\x05\0\x02\x01\x02\x12\x03\x08\x12\x13\n\x0b\n\x04\x05\0\x02\
-    \x02\x12\x03\t\x04\x1b\n\x0c\n\x05\x05\0\x02\x02\x01\x12\x03\t\x04\x14\n\
-    \x0c\n\x05\x05\0\x02\x02\x02\x12\x03\t\x17\x1a\n\x0b\n\x04\x05\0\x02\x03\
-    \x12\x03\n\x04\x19\n\x0c\n\x05\x05\0\x02\x03\x01\x12\x03\n\x04\x11\n\x0c\
-    \n\x05\x05\0\x02\x03\x02\x12\x03\n\x14\x18b\x06proto3\
+    \x10\x01\x12\x12\n\x0eWsConnectError\x10\n\x12\x15\n\x10UserUnauthorized\
+    \x10\xe7\x07\x12\x12\n\rInternalError\x10\xe8\x07J\xfd\x02\n\x06\x12\x04\
+    \0\0\x0c\x01\n\x08\n\x01\x0c\x12\x03\0\0\x12\n\n\n\x02\x04\0\x12\x04\x02\
+    \0\x05\x01\n\n\n\x03\x04\0\x01\x12\x03\x02\x08\x10\n\x0b\n\x04\x04\0\x02\
+    \0\x12\x03\x03\x04\x17\n\x0c\n\x05\x04\0\x02\0\x06\x12\x03\x03\x04\r\n\
+    \x0c\n\x05\x04\0\x02\0\x01\x12\x03\x03\x0e\x12\n\x0c\n\x05\x04\0\x02\0\
+    \x03\x12\x03\x03\x15\x16\n\x0b\n\x04\x04\0\x02\x01\x12\x03\x04\x04\x13\n\
+    \x0c\n\x05\x04\0\x02\x01\x05\x12\x03\x04\x04\n\n\x0c\n\x05\x04\0\x02\x01\
+    \x01\x12\x03\x04\x0b\x0e\n\x0c\n\x05\x04\0\x02\x01\x03\x12\x03\x04\x11\
+    \x12\n\n\n\x02\x05\0\x12\x04\x06\0\x0c\x01\n\n\n\x03\x05\0\x01\x12\x03\
+    \x06\x05\x0e\n\x0b\n\x04\x05\0\x02\0\x12\x03\x07\x04\x15\n\x0c\n\x05\x05\
+    \0\x02\0\x01\x12\x03\x07\x04\x10\n\x0c\n\x05\x05\0\x02\0\x02\x12\x03\x07\
+    \x13\x14\n\x0b\n\x04\x05\0\x02\x01\x12\x03\x08\x04\x14\n\x0c\n\x05\x05\0\
+    \x02\x01\x01\x12\x03\x08\x04\x0f\n\x0c\n\x05\x05\0\x02\x01\x02\x12\x03\
+    \x08\x12\x13\n\x0b\n\x04\x05\0\x02\x02\x12\x03\t\x04\x18\n\x0c\n\x05\x05\
+    \0\x02\x02\x01\x12\x03\t\x04\x12\n\x0c\n\x05\x05\0\x02\x02\x02\x12\x03\t\
+    \x15\x17\n\x0b\n\x04\x05\0\x02\x03\x12\x03\n\x04\x1b\n\x0c\n\x05\x05\0\
+    \x02\x03\x01\x12\x03\n\x04\x14\n\x0c\n\x05\x05\0\x02\x03\x02\x12\x03\n\
+    \x17\x1a\n\x0b\n\x04\x05\0\x02\x04\x12\x03\x0b\x04\x19\n\x0c\n\x05\x05\0\
+    \x02\x04\x01\x12\x03\x0b\x04\x11\n\x0c\n\x05\x05\0\x02\x04\x02\x12\x03\
+    \x0b\x14\x18b\x06proto3\
 ";
 
 static file_descriptor_proto_lazy: ::protobuf::rt::LazyV2<::protobuf::descriptor::FileDescriptorProto> = ::protobuf::rt::LazyV2::INIT;
diff --git a/rust-lib/flowy-document/src/protobuf/proto/errors.proto b/rust-lib/flowy-document/src/protobuf/proto/errors.proto
index c4673b201a..85dcd67b40 100644
--- a/rust-lib/flowy-document/src/protobuf/proto/errors.proto
+++ b/rust-lib/flowy-document/src/protobuf/proto/errors.proto
@@ -7,6 +7,7 @@ message DocError {
 enum ErrorCode {
     DocIdInvalid = 0;
     DocNotfound = 1;
+    WsConnectError = 10;
     UserUnauthorized = 999;
     InternalError = 1000;
 }
diff --git a/rust-lib/flowy-document/src/services/doc_cache.rs b/rust-lib/flowy-document/src/services/doc_cache.rs
index 10d0db83b9..63d53ba955 100644
--- a/rust-lib/flowy-document/src/services/doc_cache.rs
+++ b/rust-lib/flowy-document/src/services/doc_cache.rs
@@ -18,11 +18,11 @@ where
     fn from(s: T) -> Self { DocId(s.to_string()) }
 }
 
-pub(crate) struct DocCache {
+pub(crate) struct OpenedDocumentCache {
     inner: DashMap<DocId, RwLock<OpenDocument>>,
 }
 
-impl DocCache {
+impl OpenedDocumentCache {
     pub(crate) fn new() -> Self { Self { inner: DashMap::new() } }
 
     pub(crate) fn open<T, D>(&self, id: T, data: D) -> Result<(), DocError>
diff --git a/rust-lib/flowy-document/src/services/mod.rs b/rust-lib/flowy-document/src/services/mod.rs
index 32d84441fc..dddceb1832 100644
--- a/rust-lib/flowy-document/src/services/mod.rs
+++ b/rust-lib/flowy-document/src/services/mod.rs
@@ -1,3 +1,4 @@
 pub(crate) mod doc_cache;
 pub(crate) mod doc_controller;
 pub mod server;
+pub mod ws_document;
diff --git a/rust-lib/flowy-document/src/services/ws_document.rs b/rust-lib/flowy-document/src/services/ws_document.rs
new file mode 100644
index 0000000000..baf4ebf2f5
--- /dev/null
+++ b/rust-lib/flowy-document/src/services/ws_document.rs
@@ -0,0 +1,53 @@
+use crate::errors::DocError;
+use bytes::Bytes;
+use lazy_static::lazy_static;
+use std::{convert::TryFrom, sync::Arc};
+
+pub struct WsDocumentMessage(pub Bytes);
+
+pub trait WsSender: Send + Sync {
+    fn send_msg(&self, msg: WsDocumentMessage) -> Result<(), DocError>;
+}
+
+lazy_static! {
+    pub static ref WS_ID: String = "Document".to_string();
+}
+
+pub struct WsDocument {
+    sender: Arc<dyn WsSender>,
+}
+impl WsDocument {
+    pub fn new(sender: Arc<dyn WsSender>) -> Self { Self { sender } }
+    pub fn receive_msg(&self, _msg: WsDocumentMessage) { unimplemented!() }
+    pub fn send_msg(&self, _msg: WsDocumentMessage) { unimplemented!() }
+}
+
+pub enum WsSource {
+    Delta,
+}
+
+impl AsRef<str> for WsSource {
+    fn as_ref(&self) -> &str {
+        match self {
+            WsSource::Delta => "delta",
+        }
+    }
+}
+
+impl ToString for WsSource {
+    fn to_string(&self) -> String {
+        match self {
+            WsSource::Delta => self.as_ref().to_string(),
+        }
+    }
+}
+
+impl TryFrom<String> for WsSource {
+    type Error = DocError;
+    fn try_from(value: String) -> Result<Self, Self::Error> {
+        match value.as_str() {
+            "delta" => Ok(WsSource::Delta),
+            _ => Err(DocError::internal().context(format!("Deserialize WsSource failed. Unknown type: {}", &value))),
+        }
+    }
+}
diff --git a/rust-lib/flowy-sdk/Cargo.toml b/rust-lib/flowy-sdk/Cargo.toml
index 18faefcac2..152045fe83 100644
--- a/rust-lib/flowy-sdk/Cargo.toml
+++ b/rust-lib/flowy-sdk/Cargo.toml
@@ -13,12 +13,14 @@ flowy-infra = { path = "../flowy-infra" }
 flowy-workspace = { path = "../flowy-workspace" }
 flowy-database = { path = "../flowy-database" }
 flowy-document = { path = "../flowy-document" }
+flowy-ws = { path = "../flowy-ws" }
 tracing = { version = "0.1" }
 log = "0.4.14"
 futures-core = { version = "0.3", default-features = false }
 color-eyre = { version = "0.5", default-features = false }
 bytes = "1.0"
 tokio = { version = "1", features = ["rt"] }
+parking_lot = "0.11"
 
 [dev-dependencies]
 serde = { version = "1.0", features = ["derive"] }
diff --git a/rust-lib/flowy-sdk/src/deps_resolve/document_deps.rs b/rust-lib/flowy-sdk/src/deps_resolve/document_deps.rs
new file mode 100644
index 0000000000..19638c9141
--- /dev/null
+++ b/rust-lib/flowy-sdk/src/deps_resolve/document_deps.rs
@@ -0,0 +1,89 @@
+use bytes::Bytes;
+use flowy_document::{
+    errors::DocError,
+    module::DocumentUser,
+    prelude::{WsDocument, WsDocumentMessage, WsSender, WS_ID},
+};
+use flowy_user::services::user::UserSession;
+use flowy_ws::{WsMessage, WsMessageHandler};
+use parking_lot::RwLock;
+use std::{path::Path, sync::Arc};
+
+pub struct DocumentDepsResolver {
+    user_session: Arc<UserSession>,
+}
+
+impl DocumentDepsResolver {
+    pub fn new(user_session: Arc<UserSession>) -> Self { Self { user_session } }
+
+    pub fn split_into(self) -> (Arc<dyn DocumentUser>, Arc<RwLock<WsDocument>>) {
+        let user = Arc::new(DocumentUserImpl {
+            user: self.user_session.clone(),
+        });
+
+        let sender = Arc::new(WsSenderImpl {
+            user: self.user_session.clone(),
+        });
+
+        let ws = Arc::new(RwLock::new(WsDocument::new(sender.clone())));
+
+        let ws_handler = Arc::new(WsDocumentResolver {
+            user: self.user_session.clone(),
+            inner: ws.clone(),
+        });
+
+        self.user_session.add_ws_handler(ws_handler);
+
+        (user, ws)
+    }
+}
+
+struct DocumentUserImpl {
+    user: Arc<UserSession>,
+}
+
+impl DocumentUser for DocumentUserImpl {
+    fn user_dir(&self) -> Result<String, DocError> {
+        let dir = self.user.user_dir().map_err(|e| DocError::unauthorized().context(e))?;
+
+        let doc_dir = format!("{}/doc", dir);
+        if !Path::new(&doc_dir).exists() {
+            let _ = std::fs::create_dir_all(&doc_dir)?;
+        }
+        Ok(doc_dir)
+    }
+
+    fn user_id(&self) -> Result<String, DocError> { self.user.user_id().map_err(|e| DocError::internal().context(e)) }
+
+    fn token(&self) -> Result<String, DocError> { self.user.token().map_err(|e| DocError::internal().context(e)) }
+}
+
+struct WsSenderImpl {
+    user: Arc<UserSession>,
+}
+
+impl WsSender for WsSenderImpl {
+    fn send_msg(&self, msg: WsDocumentMessage) -> Result<(), DocError> {
+        let msg = WsMessage {
+            source: WS_ID.clone(),
+            data: msg.0.to_vec(),
+        };
+        let _ = self.user.send_ws_msg(msg).map_err(|e| DocError::internal().context(e))?;
+        Ok(())
+    }
+}
+
+struct WsDocumentResolver {
+    user: Arc<UserSession>,
+    inner: Arc<RwLock<WsDocument>>,
+}
+
+impl WsMessageHandler for WsDocumentResolver {
+    fn source(&self) -> String { WS_ID.clone() }
+
+    fn receive_message(&self, msg: WsMessage) {
+        let msg = WsDocumentMessage(Bytes::from(msg.data));
+
+        self.inner.read().receive_msg(msg);
+    }
+}
diff --git a/rust-lib/flowy-sdk/src/deps_resolve/editor_deps_impl.rs b/rust-lib/flowy-sdk/src/deps_resolve/editor_deps_impl.rs
deleted file mode 100644
index 572905dc94..0000000000
--- a/rust-lib/flowy-sdk/src/deps_resolve/editor_deps_impl.rs
+++ /dev/null
@@ -1,25 +0,0 @@
-use flowy_document::{errors::DocError, module::DocumentUser};
-
-use flowy_user::services::user::UserSession;
-use std::{path::Path, sync::Arc};
-
-pub struct EditorUserImpl {
-    pub(crate) user_session: Arc<UserSession>,
-}
-
-impl DocumentUser for EditorUserImpl {
-    fn user_doc_dir(&self) -> Result<String, DocError> {
-        let dir = self.user_session.user_dir().map_err(|e| DocError::unauthorized().context(e))?;
-
-        let doc_dir = format!("{}/doc", dir);
-        if !Path::new(&doc_dir).exists() {
-            // TODO: Make sure to unwrap? 😁
-            std::fs::create_dir_all(&doc_dir).unwrap();
-        }
-        Ok(doc_dir)
-    }
-
-    fn user_id(&self) -> Result<String, DocError> { self.user_session.user_id().map_err(|e| DocError::internal().context(e)) }
-
-    fn token(&self) -> Result<String, DocError> { self.user_session.token().map_err(|e| DocError::internal().context(e)) }
-}
diff --git a/rust-lib/flowy-sdk/src/deps_resolve/mod.rs b/rust-lib/flowy-sdk/src/deps_resolve/mod.rs
index 379f23f2fc..bf1e78d59b 100644
--- a/rust-lib/flowy-sdk/src/deps_resolve/mod.rs
+++ b/rust-lib/flowy-sdk/src/deps_resolve/mod.rs
@@ -1,5 +1,5 @@
-mod editor_deps_impl;
-mod workspace_deps_impl;
+mod document_deps;
+mod workspace_deps;
 
-pub use editor_deps_impl::*;
-pub use workspace_deps_impl::*;
+pub use document_deps::*;
+pub use workspace_deps::*;
diff --git a/rust-lib/flowy-sdk/src/deps_resolve/workspace_deps_impl.rs b/rust-lib/flowy-sdk/src/deps_resolve/workspace_deps.rs
similarity index 54%
rename from rust-lib/flowy-sdk/src/deps_resolve/workspace_deps_impl.rs
rename to rust-lib/flowy-sdk/src/deps_resolve/workspace_deps.rs
index f1f5f6bfb5..82e99ccfed 100644
--- a/rust-lib/flowy-sdk/src/deps_resolve/workspace_deps_impl.rs
+++ b/rust-lib/flowy-sdk/src/deps_resolve/workspace_deps.rs
@@ -1,27 +1,43 @@
+
 use flowy_database::ConnectionPool;
 use flowy_user::services::user::UserSession;
 use flowy_workspace::{
     errors::WorkspaceError,
     module::{WorkspaceDatabase, WorkspaceUser},
 };
+
 use std::sync::Arc;
 
-pub struct WorkspaceUserImpl {
+pub struct WorkspaceDepsResolver {
+    inner: Arc<Resolver>,
+}
+
+struct Resolver {
     pub(crate) user_session: Arc<UserSession>,
 }
 
-impl WorkspaceUser for WorkspaceUserImpl {
-    fn user_id(&self) -> Result<String, WorkspaceError> { self.user_session.user_id().map_err(|e| WorkspaceError::internal().context(e)) }
+impl WorkspaceDepsResolver {
+    pub fn new(user_session: Arc<UserSession>) -> Self {
+        Self {
+            inner: Arc::new(Resolver { user_session }),
+        }
+    }
 
-    fn token(&self) -> Result<String, WorkspaceError> { self.user_session.token().map_err(|e| WorkspaceError::internal().context(e)) }
+    pub fn split_into(self) -> (Arc<dyn WorkspaceUser>, Arc<dyn WorkspaceDatabase>) {
+        let user: Arc<dyn WorkspaceUser> = self.inner.clone();
+        let database: Arc<dyn WorkspaceDatabase> = self.inner.clone();
+        (user, database)
+    }
 }
 
-pub struct WorkspaceDatabaseImpl {
-    pub(crate) user_session: Arc<UserSession>,
-}
-
-impl WorkspaceDatabase for WorkspaceDatabaseImpl {
+impl WorkspaceDatabase for Resolver {
     fn db_pool(&self) -> Result<Arc<ConnectionPool>, WorkspaceError> {
         self.user_session.db_pool().map_err(|e| WorkspaceError::internal().context(e))
     }
 }
+
+impl WorkspaceUser for Resolver {
+    fn user_id(&self) -> Result<String, WorkspaceError> { self.user_session.user_id().map_err(|e| WorkspaceError::internal().context(e)) }
+
+    fn token(&self) -> Result<String, WorkspaceError> { self.user_session.token().map_err(|e| WorkspaceError::internal().context(e)) }
+}
diff --git a/rust-lib/flowy-sdk/src/module.rs b/rust-lib/flowy-sdk/src/module.rs
index 314a7a86c9..3961525349 100644
--- a/rust-lib/flowy-sdk/src/module.rs
+++ b/rust-lib/flowy-sdk/src/module.rs
@@ -1,8 +1,9 @@
 use flowy_dispatch::prelude::Module;
 
-use crate::deps_resolve::{EditorUserImpl, WorkspaceDatabaseImpl, WorkspaceUserImpl};
+use crate::deps_resolve::{DocumentDepsResolver, WorkspaceDepsResolver};
 use flowy_document::module::FlowyDocument;
-use flowy_user::services::user::UserSessionBuilder;
+use flowy_user::services::user::{UserSession, UserSessionBuilder};
+
 use std::sync::Arc;
 
 pub struct ModuleConfig {
@@ -10,28 +11,23 @@ pub struct ModuleConfig {
 }
 
 pub fn build_modules(config: ModuleConfig) -> Vec<Module> {
-    // runtime.spawn(async move {
-    // start_ws_connection("eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.
-    // eyJpc3MiOiJsb2NhbGhvc3QiLCJzdWIiOiJhdXRoIiwiaWF0IjoxNjMxNzcwODQ2LCJleHAiOjE2MzIyMDI4NDYsInVzZXJfaWQiOiI5ZmFiN2I4MS1mZDAyLTRhN2EtYjA4Zi05NDM3NTdmZmE5MDcifQ.
-    // UzV01tHnWEZWBp3nJPTmFi7ypxBoCe56AjEPb9bnsFE") });
     let user_session = Arc::new(UserSessionBuilder::new().root_dir(&config.root).build());
-
-    let workspace_user_impl = Arc::new(WorkspaceUserImpl {
-        user_session: user_session.clone(),
-    });
-
-    let workspace_db = Arc::new(WorkspaceDatabaseImpl {
-        user_session: user_session.clone(),
-    });
-
-    let editor_user = Arc::new(EditorUserImpl {
-        user_session: user_session.clone(),
-    });
-
-    let document = Arc::new(FlowyDocument::new(editor_user));
-
-    vec![
-        flowy_user::module::create(user_session),
-        flowy_workspace::module::create(workspace_user_impl, workspace_db, document),
-    ]
+    vec![build_user_module(user_session.clone()), build_workspace_module(user_session)]
+}
+
+fn build_user_module(user_session: Arc<UserSession>) -> Module { flowy_user::module::create(user_session.clone()) }
+
+fn build_workspace_module(user_session: Arc<UserSession>) -> Module {
+    let workspace_deps = WorkspaceDepsResolver::new(user_session.clone());
+    let (user, database) = workspace_deps.split_into();
+    let document = build_document_module(user_session.clone());
+
+    flowy_workspace::module::create(user, database, document)
+}
+
+fn build_document_module(user_session: Arc<UserSession>) -> Arc<FlowyDocument> {
+    let document_deps = DocumentDepsResolver::new(user_session.clone());
+    let (user, ws) = document_deps.split_into();
+    let document = Arc::new(FlowyDocument::new(user, ws));
+    document
 }
diff --git a/rust-lib/flowy-user/src/services/user/user_session.rs b/rust-lib/flowy-user/src/services/user/user_session.rs
index 69f407fd33..3b563cf26a 100644
--- a/rust-lib/flowy-user/src/services/user/user_session.rs
+++ b/rust-lib/flowy-user/src/services/user/user_session.rs
@@ -18,10 +18,10 @@ use flowy_database::{
 };
 use flowy_infra::kv::KV;
 use flowy_sqlite::ConnectionPool;
-use flowy_ws::{connect::Retry, WsController, WsMessageHandler};
+use flowy_ws::{connect::Retry, WsController, WsMessage, WsMessageHandler, WsSender};
 use parking_lot::RwLock;
 use serde::{Deserialize, Serialize};
-use std::sync::Arc;
+use std::{sync::Arc, time::Duration};
 
 pub struct UserSessionConfig {
     root_dir: String,
@@ -173,21 +173,23 @@ impl UserSession {
 
     pub fn token(&self) -> Result<String, UserError> { Ok(self.get_session()?.token) }
 
-    pub fn add_ws_msg_handler(&self, handler: Arc<dyn WsMessageHandler>) -> Result<(), UserError> {
-        let _ = self.ws_controller.write().add_handler(handler)?;
-        Ok(())
+    pub fn add_ws_handler(&self, handler: Arc<dyn WsMessageHandler>) { let _ = self.ws_controller.write().add_handler(handler); }
+
+    pub fn get_ws_sender(&self) -> Result<Arc<WsSender>, UserError> {
+        match self.ws_controller.try_read_for(Duration::from_millis(300)) {
+            None => Err(UserError::internal().context("Send ws message timeout")),
+            Some(guard) => {
+                let sender = guard.get_sender()?;
+                Ok(sender)
+            },
+        }
     }
 
-    // pub fn send_ws_msg<T: Into<WsMessage>>(&self, msg: T) -> Result<(),
-    // UserError> {     match self.ws_controller.try_read_for(Duration::
-    // from_millis(300)) {         None =>
-    // Err(UserError::internal().context("Send ws message timeout")),
-    //         Some(guard) => {
-    //             let _ = guard.send_msg(msg)?;
-    //             Ok(())
-    //         },
-    //     }
-    // }
+    pub fn send_ws_msg<T: Into<WsMessage>>(&self, msg: T) -> Result<(), UserError> {
+        let sender = self.get_ws_sender()?;
+        let _ = sender.send_msg(msg)?;
+        Ok(())
+    }
 }
 
 impl UserSession {
diff --git a/rust-lib/flowy-workspace/src/errors.rs b/rust-lib/flowy-workspace/src/errors.rs
index b24221a81c..c527615f9a 100644
--- a/rust-lib/flowy-workspace/src/errors.rs
+++ b/rust-lib/flowy-workspace/src/errors.rs
@@ -44,6 +44,7 @@ impl WorkspaceError {
     static_workspace_error!(unauthorized, ErrorCode::UserUnauthorized);
     static_workspace_error!(internal, ErrorCode::InternalError);
     static_workspace_error!(not_found, ErrorCode::RecordNotFound);
+    static_workspace_error!(ws, ErrorCode::WsConnectError);
 
     pub fn context<T: Debug>(mut self, error: T) -> Self {
         self.msg = format!("{:?}", error);
@@ -89,6 +90,9 @@ pub enum ErrorCode {
     #[display(fmt = "User unauthorized")]
     UserUnauthorized     = 100,
 
+    #[display(fmt = "Workspace websocket error")]
+    WsConnectError       = 200,
+
     #[display(fmt = "Server error")]
     InternalError        = 1000,
     #[display(fmt = "Record not found")]
diff --git a/rust-lib/flowy-workspace/src/module.rs b/rust-lib/flowy-workspace/src/module.rs
index 79e07ceb15..62b2b3889f 100644
--- a/rust-lib/flowy-workspace/src/module.rs
+++ b/rust-lib/flowy-workspace/src/module.rs
@@ -4,6 +4,7 @@ use crate::{
     handlers::*,
     services::{server::construct_workspace_server, AppController, ViewController, WorkspaceController},
 };
+
 use flowy_database::DBConnection;
 use flowy_dispatch::prelude::*;
 use flowy_document::module::FlowyDocument;
diff --git a/rust-lib/flowy-workspace/src/protobuf/model/errors.rs b/rust-lib/flowy-workspace/src/protobuf/model/errors.rs
index d2d7299c4f..848ded9495 100644
--- a/rust-lib/flowy-workspace/src/protobuf/model/errors.rs
+++ b/rust-lib/flowy-workspace/src/protobuf/model/errors.rs
@@ -227,6 +227,7 @@ pub enum ErrorCode {
     ViewDescInvalid = 23,
     ViewDataInvalid = 24,
     UserUnauthorized = 100,
+    WsConnectError = 200,
     InternalError = 1000,
     RecordNotFound = 1001,
 }
@@ -250,6 +251,7 @@ impl ::protobuf::ProtobufEnum for ErrorCode {
             23 => ::std::option::Option::Some(ErrorCode::ViewDescInvalid),
             24 => ::std::option::Option::Some(ErrorCode::ViewDataInvalid),
             100 => ::std::option::Option::Some(ErrorCode::UserUnauthorized),
+            200 => ::std::option::Option::Some(ErrorCode::WsConnectError),
             1000 => ::std::option::Option::Some(ErrorCode::InternalError),
             1001 => ::std::option::Option::Some(ErrorCode::RecordNotFound),
             _ => ::std::option::Option::None
@@ -270,6 +272,7 @@ impl ::protobuf::ProtobufEnum for ErrorCode {
             ErrorCode::ViewDescInvalid,
             ErrorCode::ViewDataInvalid,
             ErrorCode::UserUnauthorized,
+            ErrorCode::WsConnectError,
             ErrorCode::InternalError,
             ErrorCode::RecordNotFound,
         ];
@@ -302,51 +305,54 @@ impl ::protobuf::reflect::ProtobufValue for ErrorCode {
 static file_descriptor_proto_data: &'static [u8] = b"\
     \n\x0cerrors.proto\"B\n\x0eWorkspaceError\x12\x1e\n\x04code\x18\x01\x20\
     \x01(\x0e2\n.ErrorCodeR\x04code\x12\x10\n\x03msg\x18\x02\x20\x01(\tR\x03\
-    msg*\xc2\x02\n\tErrorCode\x12\x18\n\x14WorkspaceNameInvalid\x10\0\x12\
+    msg*\xd7\x02\n\tErrorCode\x12\x18\n\x14WorkspaceNameInvalid\x10\0\x12\
     \x16\n\x12WorkspaceIdInvalid\x10\x01\x12\x18\n\x14AppColorStyleInvalid\
     \x10\x02\x12\x18\n\x14WorkspaceDescInvalid\x10\x03\x12\x10\n\x0cAppIdInv\
     alid\x10\n\x12\x12\n\x0eAppNameInvalid\x10\x0b\x12\x13\n\x0fViewNameInva\
     lid\x10\x14\x12\x18\n\x14ViewThumbnailInvalid\x10\x15\x12\x11\n\rViewIdI\
     nvalid\x10\x16\x12\x13\n\x0fViewDescInvalid\x10\x17\x12\x13\n\x0fViewDat\
-    aInvalid\x10\x18\x12\x14\n\x10UserUnauthorized\x10d\x12\x12\n\rInternalE\
-    rror\x10\xe8\x07\x12\x13\n\x0eRecordNotFound\x10\xe9\x07J\xee\x05\n\x06\
-    \x12\x04\0\0\x15\x01\n\x08\n\x01\x0c\x12\x03\0\0\x12\n\n\n\x02\x04\0\x12\
-    \x04\x02\0\x05\x01\n\n\n\x03\x04\0\x01\x12\x03\x02\x08\x16\n\x0b\n\x04\
-    \x04\0\x02\0\x12\x03\x03\x04\x17\n\x0c\n\x05\x04\0\x02\0\x06\x12\x03\x03\
-    \x04\r\n\x0c\n\x05\x04\0\x02\0\x01\x12\x03\x03\x0e\x12\n\x0c\n\x05\x04\0\
-    \x02\0\x03\x12\x03\x03\x15\x16\n\x0b\n\x04\x04\0\x02\x01\x12\x03\x04\x04\
-    \x13\n\x0c\n\x05\x04\0\x02\x01\x05\x12\x03\x04\x04\n\n\x0c\n\x05\x04\0\
-    \x02\x01\x01\x12\x03\x04\x0b\x0e\n\x0c\n\x05\x04\0\x02\x01\x03\x12\x03\
-    \x04\x11\x12\n\n\n\x02\x05\0\x12\x04\x06\0\x15\x01\n\n\n\x03\x05\0\x01\
-    \x12\x03\x06\x05\x0e\n\x0b\n\x04\x05\0\x02\0\x12\x03\x07\x04\x1d\n\x0c\n\
-    \x05\x05\0\x02\0\x01\x12\x03\x07\x04\x18\n\x0c\n\x05\x05\0\x02\0\x02\x12\
-    \x03\x07\x1b\x1c\n\x0b\n\x04\x05\0\x02\x01\x12\x03\x08\x04\x1b\n\x0c\n\
-    \x05\x05\0\x02\x01\x01\x12\x03\x08\x04\x16\n\x0c\n\x05\x05\0\x02\x01\x02\
-    \x12\x03\x08\x19\x1a\n\x0b\n\x04\x05\0\x02\x02\x12\x03\t\x04\x1d\n\x0c\n\
-    \x05\x05\0\x02\x02\x01\x12\x03\t\x04\x18\n\x0c\n\x05\x05\0\x02\x02\x02\
-    \x12\x03\t\x1b\x1c\n\x0b\n\x04\x05\0\x02\x03\x12\x03\n\x04\x1d\n\x0c\n\
-    \x05\x05\0\x02\x03\x01\x12\x03\n\x04\x18\n\x0c\n\x05\x05\0\x02\x03\x02\
-    \x12\x03\n\x1b\x1c\n\x0b\n\x04\x05\0\x02\x04\x12\x03\x0b\x04\x16\n\x0c\n\
-    \x05\x05\0\x02\x04\x01\x12\x03\x0b\x04\x10\n\x0c\n\x05\x05\0\x02\x04\x02\
-    \x12\x03\x0b\x13\x15\n\x0b\n\x04\x05\0\x02\x05\x12\x03\x0c\x04\x18\n\x0c\
-    \n\x05\x05\0\x02\x05\x01\x12\x03\x0c\x04\x12\n\x0c\n\x05\x05\0\x02\x05\
-    \x02\x12\x03\x0c\x15\x17\n\x0b\n\x04\x05\0\x02\x06\x12\x03\r\x04\x19\n\
-    \x0c\n\x05\x05\0\x02\x06\x01\x12\x03\r\x04\x13\n\x0c\n\x05\x05\0\x02\x06\
-    \x02\x12\x03\r\x16\x18\n\x0b\n\x04\x05\0\x02\x07\x12\x03\x0e\x04\x1e\n\
-    \x0c\n\x05\x05\0\x02\x07\x01\x12\x03\x0e\x04\x18\n\x0c\n\x05\x05\0\x02\
-    \x07\x02\x12\x03\x0e\x1b\x1d\n\x0b\n\x04\x05\0\x02\x08\x12\x03\x0f\x04\
-    \x17\n\x0c\n\x05\x05\0\x02\x08\x01\x12\x03\x0f\x04\x11\n\x0c\n\x05\x05\0\
-    \x02\x08\x02\x12\x03\x0f\x14\x16\n\x0b\n\x04\x05\0\x02\t\x12\x03\x10\x04\
-    \x19\n\x0c\n\x05\x05\0\x02\t\x01\x12\x03\x10\x04\x13\n\x0c\n\x05\x05\0\
-    \x02\t\x02\x12\x03\x10\x16\x18\n\x0b\n\x04\x05\0\x02\n\x12\x03\x11\x04\
-    \x19\n\x0c\n\x05\x05\0\x02\n\x01\x12\x03\x11\x04\x13\n\x0c\n\x05\x05\0\
-    \x02\n\x02\x12\x03\x11\x16\x18\n\x0b\n\x04\x05\0\x02\x0b\x12\x03\x12\x04\
-    \x1b\n\x0c\n\x05\x05\0\x02\x0b\x01\x12\x03\x12\x04\x14\n\x0c\n\x05\x05\0\
-    \x02\x0b\x02\x12\x03\x12\x17\x1a\n\x0b\n\x04\x05\0\x02\x0c\x12\x03\x13\
-    \x04\x19\n\x0c\n\x05\x05\0\x02\x0c\x01\x12\x03\x13\x04\x11\n\x0c\n\x05\
-    \x05\0\x02\x0c\x02\x12\x03\x13\x14\x18\n\x0b\n\x04\x05\0\x02\r\x12\x03\
-    \x14\x04\x1a\n\x0c\n\x05\x05\0\x02\r\x01\x12\x03\x14\x04\x12\n\x0c\n\x05\
-    \x05\0\x02\r\x02\x12\x03\x14\x15\x19b\x06proto3\
+    aInvalid\x10\x18\x12\x14\n\x10UserUnauthorized\x10d\x12\x13\n\x0eWsConne\
+    ctError\x10\xc8\x01\x12\x12\n\rInternalError\x10\xe8\x07\x12\x13\n\x0eRe\
+    cordNotFound\x10\xe9\x07J\x97\x06\n\x06\x12\x04\0\0\x16\x01\n\x08\n\x01\
+    \x0c\x12\x03\0\0\x12\n\n\n\x02\x04\0\x12\x04\x02\0\x05\x01\n\n\n\x03\x04\
+    \0\x01\x12\x03\x02\x08\x16\n\x0b\n\x04\x04\0\x02\0\x12\x03\x03\x04\x17\n\
+    \x0c\n\x05\x04\0\x02\0\x06\x12\x03\x03\x04\r\n\x0c\n\x05\x04\0\x02\0\x01\
+    \x12\x03\x03\x0e\x12\n\x0c\n\x05\x04\0\x02\0\x03\x12\x03\x03\x15\x16\n\
+    \x0b\n\x04\x04\0\x02\x01\x12\x03\x04\x04\x13\n\x0c\n\x05\x04\0\x02\x01\
+    \x05\x12\x03\x04\x04\n\n\x0c\n\x05\x04\0\x02\x01\x01\x12\x03\x04\x0b\x0e\
+    \n\x0c\n\x05\x04\0\x02\x01\x03\x12\x03\x04\x11\x12\n\n\n\x02\x05\0\x12\
+    \x04\x06\0\x16\x01\n\n\n\x03\x05\0\x01\x12\x03\x06\x05\x0e\n\x0b\n\x04\
+    \x05\0\x02\0\x12\x03\x07\x04\x1d\n\x0c\n\x05\x05\0\x02\0\x01\x12\x03\x07\
+    \x04\x18\n\x0c\n\x05\x05\0\x02\0\x02\x12\x03\x07\x1b\x1c\n\x0b\n\x04\x05\
+    \0\x02\x01\x12\x03\x08\x04\x1b\n\x0c\n\x05\x05\0\x02\x01\x01\x12\x03\x08\
+    \x04\x16\n\x0c\n\x05\x05\0\x02\x01\x02\x12\x03\x08\x19\x1a\n\x0b\n\x04\
+    \x05\0\x02\x02\x12\x03\t\x04\x1d\n\x0c\n\x05\x05\0\x02\x02\x01\x12\x03\t\
+    \x04\x18\n\x0c\n\x05\x05\0\x02\x02\x02\x12\x03\t\x1b\x1c\n\x0b\n\x04\x05\
+    \0\x02\x03\x12\x03\n\x04\x1d\n\x0c\n\x05\x05\0\x02\x03\x01\x12\x03\n\x04\
+    \x18\n\x0c\n\x05\x05\0\x02\x03\x02\x12\x03\n\x1b\x1c\n\x0b\n\x04\x05\0\
+    \x02\x04\x12\x03\x0b\x04\x16\n\x0c\n\x05\x05\0\x02\x04\x01\x12\x03\x0b\
+    \x04\x10\n\x0c\n\x05\x05\0\x02\x04\x02\x12\x03\x0b\x13\x15\n\x0b\n\x04\
+    \x05\0\x02\x05\x12\x03\x0c\x04\x18\n\x0c\n\x05\x05\0\x02\x05\x01\x12\x03\
+    \x0c\x04\x12\n\x0c\n\x05\x05\0\x02\x05\x02\x12\x03\x0c\x15\x17\n\x0b\n\
+    \x04\x05\0\x02\x06\x12\x03\r\x04\x19\n\x0c\n\x05\x05\0\x02\x06\x01\x12\
+    \x03\r\x04\x13\n\x0c\n\x05\x05\0\x02\x06\x02\x12\x03\r\x16\x18\n\x0b\n\
+    \x04\x05\0\x02\x07\x12\x03\x0e\x04\x1e\n\x0c\n\x05\x05\0\x02\x07\x01\x12\
+    \x03\x0e\x04\x18\n\x0c\n\x05\x05\0\x02\x07\x02\x12\x03\x0e\x1b\x1d\n\x0b\
+    \n\x04\x05\0\x02\x08\x12\x03\x0f\x04\x17\n\x0c\n\x05\x05\0\x02\x08\x01\
+    \x12\x03\x0f\x04\x11\n\x0c\n\x05\x05\0\x02\x08\x02\x12\x03\x0f\x14\x16\n\
+    \x0b\n\x04\x05\0\x02\t\x12\x03\x10\x04\x19\n\x0c\n\x05\x05\0\x02\t\x01\
+    \x12\x03\x10\x04\x13\n\x0c\n\x05\x05\0\x02\t\x02\x12\x03\x10\x16\x18\n\
+    \x0b\n\x04\x05\0\x02\n\x12\x03\x11\x04\x19\n\x0c\n\x05\x05\0\x02\n\x01\
+    \x12\x03\x11\x04\x13\n\x0c\n\x05\x05\0\x02\n\x02\x12\x03\x11\x16\x18\n\
+    \x0b\n\x04\x05\0\x02\x0b\x12\x03\x12\x04\x1b\n\x0c\n\x05\x05\0\x02\x0b\
+    \x01\x12\x03\x12\x04\x14\n\x0c\n\x05\x05\0\x02\x0b\x02\x12\x03\x12\x17\
+    \x1a\n\x0b\n\x04\x05\0\x02\x0c\x12\x03\x13\x04\x19\n\x0c\n\x05\x05\0\x02\
+    \x0c\x01\x12\x03\x13\x04\x12\n\x0c\n\x05\x05\0\x02\x0c\x02\x12\x03\x13\
+    \x15\x18\n\x0b\n\x04\x05\0\x02\r\x12\x03\x14\x04\x19\n\x0c\n\x05\x05\0\
+    \x02\r\x01\x12\x03\x14\x04\x11\n\x0c\n\x05\x05\0\x02\r\x02\x12\x03\x14\
+    \x14\x18\n\x0b\n\x04\x05\0\x02\x0e\x12\x03\x15\x04\x1a\n\x0c\n\x05\x05\0\
+    \x02\x0e\x01\x12\x03\x15\x04\x12\n\x0c\n\x05\x05\0\x02\x0e\x02\x12\x03\
+    \x15\x15\x19b\x06proto3\
 ";
 
 static file_descriptor_proto_lazy: ::protobuf::rt::LazyV2<::protobuf::descriptor::FileDescriptorProto> = ::protobuf::rt::LazyV2::INIT;
diff --git a/rust-lib/flowy-workspace/src/protobuf/proto/errors.proto b/rust-lib/flowy-workspace/src/protobuf/proto/errors.proto
index fce3de0b6a..81830b8638 100644
--- a/rust-lib/flowy-workspace/src/protobuf/proto/errors.proto
+++ b/rust-lib/flowy-workspace/src/protobuf/proto/errors.proto
@@ -17,6 +17,7 @@ enum ErrorCode {
     ViewDescInvalid = 23;
     ViewDataInvalid = 24;
     UserUnauthorized = 100;
+    WsConnectError = 200;
     InternalError = 1000;
     RecordNotFound = 1001;
 }
diff --git a/rust-lib/flowy-ws/src/connect.rs b/rust-lib/flowy-ws/src/connect.rs
index ebd644170b..a883c741bb 100644
--- a/rust-lib/flowy-ws/src/connect.rs
+++ b/rust-lib/flowy-ws/src/connect.rs
@@ -17,16 +17,16 @@ use tokio_tungstenite::{
 };
 
 #[pin_project]
-pub struct WsConnection {
+pub struct WsConnectionFuture {
     msg_tx: Option<MsgSender>,
     ws_rx: Option<MsgReceiver>,
     #[pin]
     fut: BoxFuture<'static, Result<(WebSocketStream<MaybeTlsStream<TcpStream>>, Response), Error>>,
 }
 
-impl WsConnection {
+impl WsConnectionFuture {
     pub fn new(msg_tx: MsgSender, ws_rx: MsgReceiver, addr: String) -> Self {
-        WsConnection {
+        WsConnectionFuture {
             msg_tx: Some(msg_tx),
             ws_rx: Some(ws_rx),
             fut: Box::pin(async move { connect_async(&addr).await }),
@@ -34,7 +34,7 @@ impl WsConnection {
     }
 }
 
-impl Future for WsConnection {
+impl Future for WsConnectionFuture {
     type Output = Result<WsStream, WsError>;
     fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
         // [[pin]]
diff --git a/rust-lib/flowy-ws/src/errors.rs b/rust-lib/flowy-ws/src/errors.rs
index f4333a04cd..77bb360cd1 100644
--- a/rust-lib/flowy-ws/src/errors.rs
+++ b/rust-lib/flowy-ws/src/errors.rs
@@ -36,7 +36,6 @@ impl WsError {
     }
 
     static_user_error!(internal, ErrorCode::InternalError);
-    static_user_error!(duplicate_source, ErrorCode::DuplicateSource);
     static_user_error!(unsupported_message, ErrorCode::UnsupportedMessage);
     static_user_error!(unauthorized, ErrorCode::Unauthorized);
 }
@@ -44,9 +43,8 @@ impl WsError {
 #[derive(Debug, Clone, ProtoBuf_Enum, Display, PartialEq, Eq)]
 pub enum ErrorCode {
     InternalError      = 0,
-    DuplicateSource    = 1,
-    UnsupportedMessage = 2,
-    Unauthorized       = 3,
+    UnsupportedMessage = 1,
+    Unauthorized       = 2,
 }
 
 impl std::default::Default for ErrorCode {
diff --git a/rust-lib/flowy-ws/src/protobuf/model/errors.rs b/rust-lib/flowy-ws/src/protobuf/model/errors.rs
index 21bbb12060..7db7f53940 100644
--- a/rust-lib/flowy-ws/src/protobuf/model/errors.rs
+++ b/rust-lib/flowy-ws/src/protobuf/model/errors.rs
@@ -216,9 +216,8 @@ impl ::protobuf::reflect::ProtobufValue for WsError {
 #[derive(Clone,PartialEq,Eq,Debug,Hash)]
 pub enum ErrorCode {
     InternalError = 0,
-    DuplicateSource = 1,
-    UnsupportedMessage = 2,
-    Unauthorized = 3,
+    UnsupportedMessage = 1,
+    Unauthorized = 2,
 }
 
 impl ::protobuf::ProtobufEnum for ErrorCode {
@@ -229,9 +228,8 @@ impl ::protobuf::ProtobufEnum for ErrorCode {
     fn from_i32(value: i32) -> ::std::option::Option<ErrorCode> {
         match value {
             0 => ::std::option::Option::Some(ErrorCode::InternalError),
-            1 => ::std::option::Option::Some(ErrorCode::DuplicateSource),
-            2 => ::std::option::Option::Some(ErrorCode::UnsupportedMessage),
-            3 => ::std::option::Option::Some(ErrorCode::Unauthorized),
+            1 => ::std::option::Option::Some(ErrorCode::UnsupportedMessage),
+            2 => ::std::option::Option::Some(ErrorCode::Unauthorized),
             _ => ::std::option::Option::None
         }
     }
@@ -239,7 +237,6 @@ impl ::protobuf::ProtobufEnum for ErrorCode {
     fn values() -> &'static [Self] {
         static values: &'static [ErrorCode] = &[
             ErrorCode::InternalError,
-            ErrorCode::DuplicateSource,
             ErrorCode::UnsupportedMessage,
             ErrorCode::Unauthorized,
         ];
@@ -271,26 +268,24 @@ impl ::protobuf::reflect::ProtobufValue for ErrorCode {
 
 static file_descriptor_proto_data: &'static [u8] = b"\
     \n\x0cerrors.proto\";\n\x07WsError\x12\x1e\n\x04code\x18\x01\x20\x01(\
-    \x0e2\n.ErrorCodeR\x04code\x12\x10\n\x03msg\x18\x02\x20\x01(\tR\x03msg*]\
-    \n\tErrorCode\x12\x11\n\rInternalError\x10\0\x12\x13\n\x0fDuplicateSourc\
-    e\x10\x01\x12\x16\n\x12UnsupportedMessage\x10\x02\x12\x10\n\x0cUnauthori\
-    zed\x10\x03J\xd4\x02\n\x06\x12\x04\0\0\x0b\x01\n\x08\n\x01\x0c\x12\x03\0\
-    \0\x12\n\n\n\x02\x04\0\x12\x04\x02\0\x05\x01\n\n\n\x03\x04\0\x01\x12\x03\
-    \x02\x08\x0f\n\x0b\n\x04\x04\0\x02\0\x12\x03\x03\x04\x17\n\x0c\n\x05\x04\
-    \0\x02\0\x06\x12\x03\x03\x04\r\n\x0c\n\x05\x04\0\x02\0\x01\x12\x03\x03\
-    \x0e\x12\n\x0c\n\x05\x04\0\x02\0\x03\x12\x03\x03\x15\x16\n\x0b\n\x04\x04\
-    \0\x02\x01\x12\x03\x04\x04\x13\n\x0c\n\x05\x04\0\x02\x01\x05\x12\x03\x04\
-    \x04\n\n\x0c\n\x05\x04\0\x02\x01\x01\x12\x03\x04\x0b\x0e\n\x0c\n\x05\x04\
-    \0\x02\x01\x03\x12\x03\x04\x11\x12\n\n\n\x02\x05\0\x12\x04\x06\0\x0b\x01\
-    \n\n\n\x03\x05\0\x01\x12\x03\x06\x05\x0e\n\x0b\n\x04\x05\0\x02\0\x12\x03\
-    \x07\x04\x16\n\x0c\n\x05\x05\0\x02\0\x01\x12\x03\x07\x04\x11\n\x0c\n\x05\
-    \x05\0\x02\0\x02\x12\x03\x07\x14\x15\n\x0b\n\x04\x05\0\x02\x01\x12\x03\
-    \x08\x04\x18\n\x0c\n\x05\x05\0\x02\x01\x01\x12\x03\x08\x04\x13\n\x0c\n\
-    \x05\x05\0\x02\x01\x02\x12\x03\x08\x16\x17\n\x0b\n\x04\x05\0\x02\x02\x12\
-    \x03\t\x04\x1b\n\x0c\n\x05\x05\0\x02\x02\x01\x12\x03\t\x04\x16\n\x0c\n\
-    \x05\x05\0\x02\x02\x02\x12\x03\t\x19\x1a\n\x0b\n\x04\x05\0\x02\x03\x12\
-    \x03\n\x04\x15\n\x0c\n\x05\x05\0\x02\x03\x01\x12\x03\n\x04\x10\n\x0c\n\
-    \x05\x05\0\x02\x03\x02\x12\x03\n\x13\x14b\x06proto3\
+    \x0e2\n.ErrorCodeR\x04code\x12\x10\n\x03msg\x18\x02\x20\x01(\tR\x03msg*H\
+    \n\tErrorCode\x12\x11\n\rInternalError\x10\0\x12\x16\n\x12UnsupportedMes\
+    sage\x10\x01\x12\x10\n\x0cUnauthorized\x10\x02J\xab\x02\n\x06\x12\x04\0\
+    \0\n\x01\n\x08\n\x01\x0c\x12\x03\0\0\x12\n\n\n\x02\x04\0\x12\x04\x02\0\
+    \x05\x01\n\n\n\x03\x04\0\x01\x12\x03\x02\x08\x0f\n\x0b\n\x04\x04\0\x02\0\
+    \x12\x03\x03\x04\x17\n\x0c\n\x05\x04\0\x02\0\x06\x12\x03\x03\x04\r\n\x0c\
+    \n\x05\x04\0\x02\0\x01\x12\x03\x03\x0e\x12\n\x0c\n\x05\x04\0\x02\0\x03\
+    \x12\x03\x03\x15\x16\n\x0b\n\x04\x04\0\x02\x01\x12\x03\x04\x04\x13\n\x0c\
+    \n\x05\x04\0\x02\x01\x05\x12\x03\x04\x04\n\n\x0c\n\x05\x04\0\x02\x01\x01\
+    \x12\x03\x04\x0b\x0e\n\x0c\n\x05\x04\0\x02\x01\x03\x12\x03\x04\x11\x12\n\
+    \n\n\x02\x05\0\x12\x04\x06\0\n\x01\n\n\n\x03\x05\0\x01\x12\x03\x06\x05\
+    \x0e\n\x0b\n\x04\x05\0\x02\0\x12\x03\x07\x04\x16\n\x0c\n\x05\x05\0\x02\0\
+    \x01\x12\x03\x07\x04\x11\n\x0c\n\x05\x05\0\x02\0\x02\x12\x03\x07\x14\x15\
+    \n\x0b\n\x04\x05\0\x02\x01\x12\x03\x08\x04\x1b\n\x0c\n\x05\x05\0\x02\x01\
+    \x01\x12\x03\x08\x04\x16\n\x0c\n\x05\x05\0\x02\x01\x02\x12\x03\x08\x19\
+    \x1a\n\x0b\n\x04\x05\0\x02\x02\x12\x03\t\x04\x15\n\x0c\n\x05\x05\0\x02\
+    \x02\x01\x12\x03\t\x04\x10\n\x0c\n\x05\x05\0\x02\x02\x02\x12\x03\t\x13\
+    \x14b\x06proto3\
 ";
 
 static file_descriptor_proto_lazy: ::protobuf::rt::LazyV2<::protobuf::descriptor::FileDescriptorProto> = ::protobuf::rt::LazyV2::INIT;
diff --git a/rust-lib/flowy-ws/src/protobuf/proto/errors.proto b/rust-lib/flowy-ws/src/protobuf/proto/errors.proto
index 8e7fff01a9..cbb330a6e8 100644
--- a/rust-lib/flowy-ws/src/protobuf/proto/errors.proto
+++ b/rust-lib/flowy-ws/src/protobuf/proto/errors.proto
@@ -6,7 +6,6 @@ message WsError {
 }
 enum ErrorCode {
     InternalError = 0;
-    DuplicateSource = 1;
-    UnsupportedMessage = 2;
-    Unauthorized = 3;
+    UnsupportedMessage = 1;
+    Unauthorized = 2;
 }
diff --git a/rust-lib/flowy-ws/src/ws.rs b/rust-lib/flowy-ws/src/ws.rs
index 3794cea199..1b2d2a0d11 100644
--- a/rust-lib/flowy-ws/src/ws.rs
+++ b/rust-lib/flowy-ws/src/ws.rs
@@ -1,5 +1,5 @@
 use crate::{
-    connect::{Retry, WsConnection},
+    connect::{Retry, WsConnectionFuture},
     errors::WsError,
     WsMessage,
 };
@@ -82,7 +82,7 @@ impl WsController {
     pub fn add_handler(&mut self, handler: Arc<dyn WsMessageHandler>) -> Result<(), WsError> {
         let source = handler.source();
         if self.handlers.contains_key(&source) {
-            return Err(WsError::duplicate_source());
+            log::error!("{} source is already registered", source);
         }
         self.handlers.insert(source, handler);
         Ok(())
@@ -97,6 +97,13 @@ impl WsController {
         self._connect(addr, Some(Box::pin(async { retry.await })))
     }
 
+    pub fn get_sender(&self) -> Result<Arc<WsSender>, WsError> {
+        match &self.sender {
+            None => Err(WsError::internal().context("WsSender is not initialized")),
+            Some(sender) => Ok(sender.clone()),
+        }
+    }
+
     fn _connect(&mut self, addr: String, retry: Option<BoxFuture<'static, ()>>) -> Result<JoinHandle<()>, ServerError> {
         log::debug!("🐴 ws connect: {}", &addr);
         let (connection, handlers) = self.make_connect(addr.clone());
@@ -131,7 +138,7 @@ impl WsController {
         }))
     }
 
-    fn make_connect(&mut self, addr: String) -> (WsConnection, WsHandlers) {
+    fn make_connect(&mut self, addr: String) -> (WsConnectionFuture, WsHandlerFuture) {
         //                Stream                             User
         //               ┌───────────────┐                 ┌──────────────┐
         // ┌──────┐      │  ┌─────────┐  │    ┌────────┐   │  ┌────────┐  │
@@ -147,22 +154,22 @@ impl WsController {
         let handlers = self.handlers.clone();
         self.sender = Some(Arc::new(WsSender { ws_tx }));
         self.addr = Some(addr.clone());
-        (WsConnection::new(msg_tx, ws_rx, addr), WsHandlers::new(handlers, msg_rx))
+        (WsConnectionFuture::new(msg_tx, ws_rx, addr), WsHandlerFuture::new(handlers, msg_rx))
     }
 }
 
 #[pin_project]
-pub struct WsHandlers {
+pub struct WsHandlerFuture {
     #[pin]
     msg_rx: MsgReceiver,
     handlers: HashMap<String, Arc<dyn WsMessageHandler>>,
 }
 
-impl WsHandlers {
+impl WsHandlerFuture {
     fn new(handlers: HashMap<String, Arc<dyn WsMessageHandler>>, msg_rx: MsgReceiver) -> Self { Self { msg_rx, handlers } }
 }
 
-impl Future for WsHandlers {
+impl Future for WsHandlerFuture {
     type Output = ();
     fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
         loop {