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文件傳輸與聊天系統(tǒng)設(shè)計與實現(xiàn)計算機畢業(yè)設(shè)計論文-展示頁

2024-12-05 16:24本頁面
  

【正文】 候,不得不首先介紹 OSI 層次模型, 雖然 OSI 參考模型的實際應用意義 不是 很 大,但其的確對于理解網(wǎng)絡(luò)協(xié)議內(nèi)部的運作很有幫助 ,而在現(xiàn)實網(wǎng)絡(luò)世界里, TCP/IP 協(xié)議棧獲得了更為廣泛的應用 。第 5 章是文件傳輸與聊天系統(tǒng)網(wǎng)絡(luò)設(shè)計的結(jié)果分析,主要總結(jié)出本論文設(shè)計的結(jié)果并進行分析。第 2 章是文件傳輸與聊天系統(tǒng)開發(fā)的技術(shù)基礎(chǔ),主要介紹開發(fā)即時通信軟件的一些基本技術(shù),網(wǎng)絡(luò)開發(fā)的背景知識以及 SOCKET API 和 MFC SOCKET編程的基礎(chǔ) 。即時通信如果繼續(xù)如此近乎無差異化地發(fā)展下去,最后唯一的結(jié)果就是競爭日益激烈,不利于即時通信的發(fā)展。 ( 3)差異化問題。受多種因素制約,各即時通信工具間的互聯(lián)互通問題至今未解決。即時通信要想進一步發(fā)展,首先要解決的就是安全性問題。目前,大多數(shù)即時通信系統(tǒng)的安全性較差,極易受到病毒攻擊。面向企業(yè)用戶的即時通信產(chǎn)品比較多,但除了騰訊 、微軟等少數(shù)運營商用戶比較多以外,其他產(chǎn)品推出時間都很短,用戶極少。本設(shè)計采用了CS 體系結(jié)構(gòu)和 P2P 方式通信的思想進行軟件總體設(shè)計;撰寫用以保證通信安全的密碼算法,設(shè)計相關(guān)的密鑰管理方案。 找畢業(yè)設(shè)計、項目源碼、編程視頻,就上碼農(nóng)網(wǎng) manong365 第 5 頁 共 45 頁 本設(shè)計按照軟件工程的思想從需求分析著手,進行總體設(shè)計,詳細設(shè)計,編碼及調(diào)試等步驟。 本設(shè)計通過實際動手,用 VC 實現(xiàn)簡單的即時通信系統(tǒng),達到熟悉即時通信軟件的應用環(huán)境及背景,熟悉即時通信軟件的常用開發(fā)技術(shù)的目的。 即時通信工具憑借實時、有效的溝通功能,特別是憑借其對虛擬網(wǎng)絡(luò)社區(qū)的建設(shè),贏得了廣大互聯(lián)網(wǎng)用戶的喜愛。更有甚者,美國微軟公司把即時通信工具 MSN Messenger 捆綁在操作系統(tǒng)上隨 Windows2020 等產(chǎn)品發(fā)行。而騰訊公司則建立了中國最大的互聯(lián)網(wǎng)注冊用戶群。目前國內(nèi)數(shù)十家公司擁有自主知識產(chǎn)權(quán)的即時通信產(chǎn)品。有調(diào)查資料甚至列出了國外多達 18種的即時通信軟件。 即時通信系統(tǒng)利用服務(wù)器上的用戶注冊信息和聯(lián)機用戶建立起虛擬社區(qū),服務(wù)器為社區(qū)成員提供狀態(tài)信息和聯(lián)系方式,以便用戶之間互相通信,用戶使用特定的即時通信客戶端登錄到服務(wù)器,找到他想聯(lián)系的人進行交流。 找畢業(yè)設(shè)計、項目源碼、編程視頻,就上碼農(nóng)網(wǎng) manong365 The Design and Development of Security InstantMessaging software Abstract Security InstantMessaging software is currently really a kind of hot and popular munication software. It makes full use of the Inter, the biggest platform at present, to enhance the munication of people. This design applies the technology called SOCKET to the platform of WINDOWS in order to achieve the usage of Security InstantMessaging software. This design’s software development is based on the realization of WINDOWS’ platform on VC. According to the thinking of software engineering, we analyze from demand, and then conduct general design, detailed design, code and testing, etc. SOCKET can use API or any other present systems. We use CS system structure and P2P method to municate – this thinking is used to conduct the general design of the software. We write with the password algorithm which ensures the safety of telemunication, and design relevant cipher key’s management plan. This design uses the process of software engineering to develop the whole software. We analyze from demand to detailed design, the construction of code and the final test – all will be pletely realized. The main point of this design lies in the web design of the whole system, and the server’s web design is more important. This design finally gives the web layers’ structure of constructing Security InstantMessaging software, and realized the whole system’s kernel and generated executable documents. The software has plete functions, including basic functions such as instant messaging, file transmission, etc. It can support more than 254 clientsides. It has a friendly software interface and can realize P2P telemunication as well as transferring messages through server. It can be applied to local at least. We can also use database to manage clients who use telemunication and instant messaging, etc. Inquiring can also be done. Keywords: InstantMessaging software, SOCKET Programs,Talk, Communication, Security. 找畢業(yè)設(shè)計、項目源碼、編程視頻,就上碼農(nóng)網(wǎng) manong365 目錄 1 前言 ............................................................................................................................ 1 文件傳輸與聊天系統(tǒng) 的開發(fā)背景及選題意義 ..................................................... 4 文件傳輸與聊天系統(tǒng) 的發(fā)展現(xiàn)狀 ......................................................................... 5 本論文的組織結(jié)構(gòu) ................................................................................................. 5 2 文件傳輸與聊天系統(tǒng) 開發(fā)的技術(shù)基礎(chǔ) .................................................................... 6 網(wǎng)絡(luò)協(xié)議簡介 ......................................................................................................... 6 Socket 套接字編程 .................................................................................................. 7 MFC 網(wǎng)絡(luò)編程類 .................................................................................................... 8 開發(fā)環(huán)境及相關(guān)知識介紹 ................................................................................... 10 3 文件傳輸與聊天系統(tǒng) 系統(tǒng)分析 .............................................................................. 12 文件傳輸與聊天系統(tǒng) 的開發(fā)概要 ....................................................................... 12 文件傳輸與聊天系統(tǒng) 的應用層協(xié)議設(shè)計以及相關(guān)數(shù)據(jù)結(jié)構(gòu) ........................... 15 文件傳輸與聊天系統(tǒng) 的總體模塊分析以及網(wǎng)絡(luò)通信模塊設(shè)計 ....................... 26 4 文件傳輸與聊天系統(tǒng) 網(wǎng)絡(luò)詳細設(shè)計 ...................................................................... 29 公共通信相關(guān)類以及函數(shù)描述 ........................................................................... 29 服務(wù)器通信類以及相關(guān)函數(shù)描述 ....................................................................... 33 客戶端通信類以及相關(guān)函數(shù) ............................................................................... 35 客戶端的登陸過程以及 MD5 加密 .................................................................... 36 文件傳輸?shù)倪^程 ................................................................................................... 37 5 文件傳輸與聊天系統(tǒng) 網(wǎng)絡(luò)設(shè)計的結(jié)果分析 .......................................................... 36 服務(wù)器的大數(shù)據(jù)流量控制 ................................................................................... 36 服務(wù)器對客戶端的消息中轉(zhuǎn)技術(shù)分析 ............................................................... 36 發(fā)送數(shù)據(jù)的超時與重傳處理 ............................................................................... 37 客戶端與服務(wù)器 的激活消息 ............................................................................... 37 程序運行情況 ....................................................................................................... 37 6 結(jié) 論 ........................................................................................................................ 40 參考文獻 ( References) ............................................................................................ 41 找畢業(yè)設(shè)計、項目源碼、編程視頻,就上碼農(nóng)網(wǎng) manong365 第 4 頁 共 45 頁 致 謝 ............
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