As a Web application platform and a next-generation technology for productivity improvement of Web development, HTML5 is an open Web standard created to provide a better user experience. It has become possible through HTML5 to provide an excellent Web service rapidly [9]. The function of the WebSocket technology was to improve performance. Two-way data communication in real time actually corresponds to numerous concurrent connections. In this case, the real -time aspects specifically, WebSocket technology is often used. If the WebSocket technology is used, the unnecessary HTTP header data must be removed first in order to quickly send and receive pure data. This results in a reduction of the amount of data being transmitted and received; consequently, this reduces the load on the server and the network. Then,
using the WebSocket Secure (WSS) protocol, security was enhanced with a unique algorithm for encryption / decryption of data. Figure 1 is a graph comparing the conventional communication method and new WebSocket system [10]. Thus, with the use of the WebSocket technology, connection-oriented full-duplex communication, such as TCP sockets, is possible [11]. Using features such as these, we were able to implement more effectively the development of applications that allow chatting from the Web, real-time games, and multimedia delivery.