diff --git a/src/ts/@overflow/webapp/client/central/webapp/client.ts b/src/ts/@overflow/webapp/client/central/webapp/client.ts
new file mode 100644
index 0000000..033c730
--- /dev/null
+++ b/src/ts/@overflow/webapp/client/central/webapp/client.ts
@@ -0,0 +1,60 @@
+
+export default class WebAppClient {
+  private url: string;
+  private conn: WebSocket;
+
+  private pendingRequests: Map<number, any>;
+
+  public constructor(url: string) {
+    this.url = url;
+
+  }
+
+  /**
+   * connect
+   */
+  public connect(): Promise<void> {
+    return new Promise<void>((resolve, reject) => {
+      try {
+        this.conn = new WebSocket(this.url);
+      } catch(e) {
+        console.log(e);
+      }
+    });
+  }
+
+  /**
+   * close
+   */
+  public close(): Promise<void> {
+    return new Promise<void>((resolve, reject) => {
+      try {
+        this.conn.close();
+      } catch(e) {
+        console.log(e);
+      }
+    });
+  }
+
+  /**
+   * close
+   */
+  public send(): void {
+
+  }
+
+  /**
+   * close
+   */
+  public call(method: string, ...params: any[]): void {
+
+  }
+  /**
+   * close
+   */
+  public callTimeout(): void {
+
+  }
+
+
+}