Using VB to write a similar MSN chat system for learning to use, good entry stag...

一个很精典的邮件接收与发送的原程序！如果你不下载，你一定会后悔的，有什么问题请联系我！-a very classic mail receiving and sending the original program! If you do not download, you will surely regret, what issues please contact me!

聊天室程序，通过socket实现，可以进行简单的交互，这个是客户端程序-chat room

netmeeting的SDK，开发语音视频聊天室的好东西！这个SDK网上不好找，里面有很多的SAMPLE！-The NetMeeting SDK, the development of voice and video chat rooms good things! This SDK不好找online, which has a lot of SAMPLE!

一个使用window sdk写的抓包的小程序-A use of the capture window sdk to write a small program

1-持续CSMA协议下，当一个用户要发送数据时，它首先侦听信道，看是否有其他站点在传送。如果信道忙，就持续等待直到信道空闲时，便将数据送出。若发生冲突，就等待一个随机长的时间，然后重新侦听。 对于这种协议，先考虑当前帧i时的前一帧时i-1，得到前一帧时的最后一帧frame0（相对时间最大的帧）的相对时间dt0，然后再在当前帧时查看有哪些帧的相对时间会小于dt0，这些帧若是发送就会与frame0发生冲突，所以这些帧就进入持续等待状态，这些帧并没有发送。再考虑当前帧余下的帧（dt > dt0），它们中的第一帧侦听到信道处于空闲状态，所以就发送，而其他的帧由于第一帧的发送又处于等待状态。若有大于或等于2个帧的相对时间相等，且它们又同时侦听到信道空闲时，就会同时发送而导致冲突，冲突发生后的处理方法同上两个协议的一样。 -1- CSMA continued under the agreement, when a user to send data, it first interception Channel to see if there are other sites in transmission. If Channel busy, continuing to wait until the idle channel, and put more information out. If there is conflict, it is a long wait for a random time, then re-interception. Such agreements, to consider the current frame i am one of the former when i-1, be a time before the final one frame0 (relative to the time frame) the relative dt0 time, and then when the current frame to detect what the relative time frame will be less than dt0, these frames will be sent if and frame0 conflict, th

基于MATLAB下的WinsockAPI网络编程，有很好的参考价值，值得一看！-MATLAB-based network programming WinsockAPI under, has a very good reference value, worth a visit!

一个简单的arp封包程序，可以伪装成任意ip，mac。代码简单可塑性强，适合winpcap初学者或arp防御测试者使用，对于不好的地方希望多多交流相互学习-Arp packet with a simple procedure that can masquerade as any ip, mac. Code is simple and plasticity, and is suitable for beginners or arp defense winpcap test to use, the local hope for the poor lot of communication learning from each other

线程工具，可以使用ndis中间层，用vc编的简单防火墙程序使用ndis中间层，用vc编的简单防火墙程序-threading tools can use NDIS intermediate layer using vc series of simple procedures for the use of firewall NDIS intermediate layer using vc series of simple procedures firewall

网络聊天室服务器端,基于SOCKET编程,使用VC MFC环境编程-Internet chat room server, based on Socket programming, the use of VC MFC programming environment

mac osc平台下Xcode编程，Objective-C编写的网络通信程序-mac osc platforms Xcode programming, Objective-C to prepare the network communication program