HTTPClient

Pop3客户端接收信件的整个流程： 1。连接到pop3服务器（默认端口110） 2。发送用户名（user） 3。发送密码（pass） 4。查询当前邮箱状态（stat） 5。查询服务器上所有邮件UID列表（UIDL） 6。查询本地所有邮件的UID列表，从而罗列出新邮件列表（本地UID列表是POP3客户端记录在日志文件中的） 7。对所有新邮件查询其大小（LIST） 8。下载所有新邮件（RETR）利用List提供的邮件大小信息 9。如果有必要，对所有新邮件标志为删除（DELE） 10。结束对话（QUIT） 11。解析本地下载邮件。(Pop3 client receives the entire flow of letters: 1. Connect to the pop3 server (default port 110) 2. Send user name (user) 3. Send password (pass) 4. Query current mail status (stat) 5. Query server UID list of all messages (UIDL) 6. Query local UID list of all messages, which set out the new mailing list (local UID is a POP3 client list recorded in the log file) 7. For all new e-mail inquiries about their size (LIST) 8. Download all new messages (RETR) to use List of information provided by message size 9. If necessary, for all new signs for the delete message (DELE) 10. The end of the dialogue (QUIT) 11. Analysis of local download your mail.)

说明：  VB 例程序讲解 、局域网聊天程序 二、可以换肤的窗体 三、richtext实现的文本编辑器 四、用OLE实现文件拖放 五、窗体卸载时弹出确认对话框 六、让控件大小随窗体改变而改变 七、拖动无标题栏窗体 八、在打开文件对话框中选择多文件 (VB procedures on cases, two LAN chat program, the Eurocargo Form 3, the realization richtext text editor 4, OLE files with drag-and-drop 5, Form unloading pop confirmation dialog box six, with the size controls Form change of seven, dragging Untitled Form 8 column, in fighting to open a file selection dialog many documents)

UDT（UDP-based Data Transfer Protocol，简称UDT）是一种互联网数据传输协议。UDT建于UDP之上，并引入新的拥塞控制和数据可靠性控制机制。UDT是面向连接的双向的应用层协议。它同时支持可靠的数据流传输和部分可靠的数据报传输。 (UDT is a reliable UDP based application level data transport protocol for distributed data intensive applications over wide area high-speed networks. UDT uses UDP to transfer bulk data with its own reliability control and congestion control mechanisms. The new protocol can transfer data at a much higher speed than TCP does. UDT is also a highly configurable framework that can accommodate various congestion control algorithms)

实现本地程序从远程服务器下载文件。保存到本地。同时，具备断点续传的功能。可以在下载一部分的情况下，再次下载从断点处继续下载。(Implement a local program to download files a remote server. Saved locally. At the same time, with the functions of HTTP. You can download a part in the case, once again download continue downloading the breakpoint.)

ICMP扫描器的设计源码。能实现ping功能，扫描IP地址可以手动输入。方便初学者学习。。(ICMP scanner design source. Ping function, scanning the IP address can be entered manually.)

MACH3软件二次开发的一个实例程序，希望对喜欢MACH3二次开发的朋友有帮助。(MACH3 software secondary development of an example program, we want to enjoy MACH3 secondary development to help a friend.)

简化Sock连接。采用队列保存Sock的收发消息包，保证消息的处理顺序。(Simplify the Sock connection)

完成端口服务器，支持同步发送接收，支持内存池，支持简单丢包算法。(Completion port server to support simultaneous sending and receiving, support memory pool to support a simple algorithm for packet loss.)

自动计算上网的时间,下载看了你就知道是什么东西了,反正这在也没法给你说请楚.(Automatic calculation of time online, download saw you know what, and anyway it would not be able to tell you please Chu.)

浙江大学 《网络技术》课程资料 对应教材《计算机网络》第4版(Zhejiang University " Network Technology" course materials)