基于WebSocket的即时通信系统设计与实现-电子与通信工程专业论文.docxVIP

基于WebSocket的即时通信系统设计与实现 基于WebSocket的即时通信系统设计与实现 万方数据 大连理工大学专业学位硕士学位论文The 大连理工大学专业学位硕士学位论文 The Design and Implementation of an Instant Message System Based on WebSocket Technology Abstract Internet in modem society has far passed its original design purpose．There were no days like today that people rely on it SO badly．And just because of this situation，Intemet develops and changes rapidly．Beside，the increment ofterminal smart devices such as tablets and smart phones are also reasons to make Internet constantly re．invent itself．Alongside the development of web applications，real-time communication on webs becomes much more jmportant． This paper discussed the current web communication technologies’environment and mainly studies WebSocket-based communication technology which is very important part in HTML5 standard．The detai ls of WebSocket—based online lecturing，sharing and displaying system have been explained in this paper．It includes user interface design，user experiences design，build up ofNodeJS server，usage ofWebSocket-based web communication technology， construction of no—relational MongoDB database，transformation of documentations with different types，deployment ofbluemix and examination of security．The whole system realized the innovation idea that sharing can be anywhere anytime without boundaries．Also it indicates the potential of WebSocket··based real·-time communication technology and provides a clear view on how efficient this technology could be． In comparison of other web communication technologies such as long pulling mechanism and stream technology，WebSocket—based communication can be more efficient on using server side resources and network bandwidth．As the next generation communication technology，it can truly fulfill the purpose of real—time communication． Key Words：WebSocket Protocol；Real—time Web Application；NodeJS；MongoDB ．．III．． 万方数据 基于WebSocket的即时通信系统设计与实现 基于WebSocket的即时通信系统设计与实现 万方数据 大连理工大学专业学位硕士学位论文目 大连理工大学专业学位硕士学位论文 目 录 摘 要 ．I Abstract ．III l绪