diff --git a/src/app/commons/api/service/api.service.spec.ts b/src/app/commons/service/api.service.spec.ts
similarity index 61%
rename from src/app/commons/api/service/api.service.spec.ts
rename to src/app/commons/service/api.service.spec.ts
index 9b2fbe6..3fc0d05 100644
--- a/src/app/commons/api/service/api.service.spec.ts
+++ b/src/app/commons/service/api.service.spec.ts
@@ -13,7 +13,13 @@ describe('APIService', () => {
     expect(service).toBeTruthy();
   }));
 
-  it('should be created', inject([APIService], (service: APIService) => {
+  it('apiService connect to server', inject([APIService], (service: APIService) => {
+    service.connect();
+    service.getConnectionStatus().subscribe(
+      (isConnected: boolean) => {
+        console.log('isConnected:' + isConnected);
+      }
+    );
 
     expect(service).toBeTruthy();
   }));
diff --git a/src/app/commons/api/service/api.service.ts b/src/app/commons/service/api.service.ts
similarity index 57%
rename from src/app/commons/api/service/api.service.ts
rename to src/app/commons/service/api.service.ts
index 271952e..0131cbf 100644
--- a/src/app/commons/api/service/api.service.ts
+++ b/src/app/commons/service/api.service.ts
@@ -1,15 +1,17 @@
 import { Injectable } from '@angular/core';
-import { RxWebsocketSubject } from 'app/commons/core/rx/websocket/rx-websocket-subject';
 import { Observable } from 'rxjs/Observable';
 
+import { RxWebsocketSubject } from 'app/core/rx/websocket/rx-websocket-subject';
+import { RPCRegistry } from 'app/core/rpc/registry/rpc-registry';
 
 
 @Injectable()
 export class APIService {
   private wsSocketSubject: RxWebsocketSubject<Object>;
+  private rpcRegistry: RPCRegistry;
 
   constructor() {
-    this.wsSocketSubject = new RxWebsocketSubject<Object>('');
+    this.wsSocketSubject = new RxWebsocketSubject<Object>('ws://127.0.0.1:19090/webapp');
   }
 
   public connect(): void {
@@ -22,24 +24,35 @@ export class APIService {
         this.onError(error);
       },
       () => {
-
+        this.onDisconnected();
       }
     );
   }
 
+  public call<T>(method: string, ...args: any[]): Observable<T> {
+    return undefined;
+  }
+
+  public send(method: string, ...args: any[]): void {
+
+  }
+
   public getConnectionStatus(): Observable<boolean> {
     return this.wsSocketSubject.connectionStatus;
   }
 
   private onMessage(message: Object): void {
     //
+    console.log(message);
   }
 
   private onError(error: any): void {
     //
+    console.log(error);
   }
 
   private onDisconnected(): void {
     //
+    console.log('disconnected');
   }
 }
diff --git a/src/app/commons/core/rpc/protocol/client-codec.ts b/src/app/core/rpc/protocol/client-codec.ts
similarity index 100%
rename from src/app/commons/core/rpc/protocol/client-codec.ts
rename to src/app/core/rpc/protocol/client-codec.ts
diff --git a/src/app/commons/core/rpc/protocol/json/client-notification.ts b/src/app/core/rpc/protocol/json/client-notification.ts
similarity index 100%
rename from src/app/commons/core/rpc/protocol/json/client-notification.ts
rename to src/app/core/rpc/protocol/json/client-notification.ts
diff --git a/src/app/commons/core/rpc/protocol/json/client-request.ts b/src/app/core/rpc/protocol/json/client-request.ts
similarity index 100%
rename from src/app/commons/core/rpc/protocol/json/client-request.ts
rename to src/app/core/rpc/protocol/json/client-request.ts
diff --git a/src/app/commons/core/rpc/protocol/json/client-response.ts b/src/app/core/rpc/protocol/json/client-response.ts
similarity index 100%
rename from src/app/commons/core/rpc/protocol/json/client-response.ts
rename to src/app/core/rpc/protocol/json/client-response.ts
diff --git a/src/app/commons/core/rpc/registry/rpc-registry.ts b/src/app/core/rpc/registry/rpc-registry.ts
similarity index 100%
rename from src/app/commons/core/rpc/registry/rpc-registry.ts
rename to src/app/core/rpc/registry/rpc-registry.ts
diff --git a/src/app/commons/core/rx/websocket/rx-websocket-subject.ts b/src/app/core/rx/websocket/rx-websocket-subject.ts
similarity index 98%
rename from src/app/commons/core/rx/websocket/rx-websocket-subject.ts
rename to src/app/core/rx/websocket/rx-websocket-subject.ts
index 1ea93d5..0ee3bfb 100644
--- a/src/app/commons/core/rx/websocket/rx-websocket-subject.ts
+++ b/src/app/core/rx/websocket/rx-websocket-subject.ts
@@ -7,7 +7,6 @@ import {
 } from 'rxjs/observable/dom/WebSocketSubject';
 
 import 'rxjs/add/operator/distinctUntilChanged';
-import 'rxjs/add/operator/interval';
 import 'rxjs/add/operator/share';
 import 'rxjs/add/operator/takeWhile';
 import 'rxjs/add/observable/interval';
@@ -112,7 +111,8 @@ export class RxWebsocketSubject<T> extends Subject<T> {
           this.complete();
           this.connectionObserver.complete();
         }
-      });
+      }
+    );
   }
 
   public send(data: any): void {
diff --git a/src/app/packages/member/components/signup/signup.component.scss b/src/app/packages/member/components/signup/signup.component.scss
deleted file mode 100644
index eaf77bc..0000000
--- a/src/app/packages/member/components/signup/signup.component.scss
+++ /dev/null
@@ -1,37 +0,0 @@
-$gray-lighter: #eceeef !default;
-$image_path: "/assets/images/" !default;
-
-$prefix: 'sigin';
-
-.#{$prefix} {
-
-  &-conainer {
-    min-height: 100%;
-    background-size: cover;
-    padding: 100px;
-  }
-
-  &-main {
-    position: relative;
-    margin: 0 auto;
-    width: 500px;
-  }
-}
-
-.full-width {
-  width: 100%;
-}
-
-.help {
-
-}
-
-.is-danger {
-
-}
-
-.redirect {
-  font-size: 14px;
-  margin-left: 10px;
-  color: #00AAAA;
-}
diff --git a/src/app/packages/member/service/member.service.ts b/src/app/packages/member/service/member.service.ts
index 85c1ee1..c56720c 100644
--- a/src/app/packages/member/service/member.service.ts
+++ b/src/app/packages/member/service/member.service.ts
@@ -1,11 +1,23 @@
 import { Injectable } from '@angular/core';
+import { APIService } from 'app/commons/service/api.service';
+
+import { Member } from '../model/member';
 
 @Injectable()
 export class MemberService {
 
-  constructor() { }
+  public constructor(
+    private apiService: APIService,
+  ) { }
 
-  signin(email: string, password: string) {
+  public signin(email: string, password: string) {
+    this.apiService.call<Member>('MemberService.signin', email, password).subscribe(
+      (member: Member) => {
 
+      },
+      (error: any) => {
+
+      }
+    );
   }
 }