Network traffic can be restricted to things that can use this to simulate the In...

一个利用TCP协议进行网络传输的源代码-use a TCP network transmission source code

typedef struct tcpheader{    USHORT        th_sport;    USHORT        th_dport;    unsigned int  th_seq;    unsigned int  th_ack;    unsigned char th_lenres;    unsigned char th_flag;    USHORT        th_win;    USHORT        th_sum;    USHORT        th_urp;}TCP_HEADER;

XMail is an Internet and intranet mail server featuring an SMTP server, POP3 server, finger server, multiple domains, no need for users to have a real system account, SMTP relay checking, RBL/RSS/ORBS/DUL and custom ( IP based and address based ) spam protection, SMTP authentication ( PLAIN LOGIN CRAM-MD5 POP3-before-SMTP and custom ), a POP3 account syncronizer with external POP3 accounts, account aliases, domain aliases, custom mail processing, direct mail files delivery, custom mail filters, mailing lists, remote administration, custom mail exchangers, logging, and multi-platform code. XMail sources compile under GNU/Linux, FreeBSD, OpenBSD, NetBSD, OSX, Solaris and NT/2K/XP.

商城程序下载，再调调。-Mall downloading, to stress transfer.

一个FTP应用程序，该程序完成以下功能：⒈登录FTP服务器；⒉显示登录FTP服务器目录下的文件和目录名；⒊提供文件下载上传服务-An FTP application, the program is complete the following features: ⒈ login FTP server ⒉ display the login FTP server directory under the file and directory names ⒊ upload service to provide file download

应用背景其实.....这只是一个python练手，看懂蛮容易的，源码里只能接受本地客户端的访问，但是可通过修改服务器的IP地址进行修改，然后就可以从其他机子访问啦。关键技术python的网络编程，本地客户端访问服务器，代理服务器解析客户端传来的请求，取出目的IP和端口，和请求内容，再向目的Ip发送请求，最后将受到的数据反馈给本地客户端。

delphi winsock 编程，有 多种通讯方式， 这个示例集合了 阻塞模式、非阻塞模式、select模式、WSAAsynselec模式 等， 还有udp广播的示例。非常不错！！

cms project

VC++实现拨号上网程序-VC dial-up procedures

JAVA局域网通讯源码，可以实现局域网间的相互通讯-JAVA LAN communications source, you can realize the inter-LAN communications