Research And Implentation Of Cloud Interaction Protocol And Its Transission Optimization Technology

With the development of the business model based on cloud computing,enterprises can achieve more business needs while completing the utilization of idle physical hardware resources by fully utilizing all computing services in the cloud,and complete unified management of resources and centralized data placement.Cloud computing makes up for the waste of resources and the neglect of management in the traditional IT industry.The desktop cloud is one of the most widely used service types in this business model.By putting all the desktop virtual machines in the cloud for unified management and maintenance,it is to build a pooled elastic and easy to expand in the cloud.The desktop infrastructure allows users to access desktop resources by using any terminal.When users obtain virtual desktop resources,they interact with remote virtual desktops through the Remote Desktop Protocol.Therefore,the Remote Desktop Protocol is considered to be one of the key technologies in the virtual desktop architecture.The emergence of protocols such as VNC,RDP,ICA,and SPICE is enriching the field of remote desktop protocols,so the remote desktop protocol plays a very important role in the desktop cloud.This thesis studies the various remote desktop protocols used in the current cloud platform,analyzes the functions,performance and security of the existing protocols,and finds that there are many problems that need to be solved.The remote desktop protocol has problems such as limiting application usage scenarios,not supporting open source tunability,completely clear text during data transmission,excessive bandwidth usage,excessive performance requirements for terminal devices,and lack of support for specific functions.The author deeply studied and studied various protocols.After understanding the core concepts and design ideas involved in these protocols,the author proposed the design of the cloud interactive protocol for the remote desktop protocol used under the cloud platform.The image module design adopts a screen segmentation difference transmission strategy,and is divided into a common desktop mode and a video acceleration mode according to the application scenario,and different transmission optimization methods are adopted for different modes.To meet the security requirements of different users in different scenarios,the cloud interaction protocol uses a relatively flexible security encryption mechanism.The cloud interaction protocol uses an efficient network model and a memory pool management mechanism to improve the efficiency of the protocol.Finally,according to some functional requirements necessary for the protocol,such as audio,keyboard,mouse and USB redirection,the corresponding functional modules of the protocol are designed.The cloud interaction protocol designed and implemented in this thesis aims to provide efficient and secure virtual desktop services,flexible desktop mode conversion mechanism and secure transmission scheme to ensure the transmission efficiency and transmission security of the protocol.The cloud interaction protocol is divided into eight modules,such as network module,image module and security mechanism module,which embodies the idea of low coupling and high cohesion,which is more conducive to expansion and subsequent research.