WinSock是一组API，用于在网络上传输数据和交换信息。虽然现在有很多工具如FTP 程序可以在网络上传输数据和文件，但是通过WinSock编程有更大的灵活性，它不需要关心网络连接的细节，不过用WinSock编程却很复杂。在Delphi中我们并不需要直接与 WinSock的API打交道，因为TClientSocket元件和TServerSocket元件（在Internet页）封装了WinSock的大部分API，使得对WinSock的访问大大简化。下面这个远程控制的例子就很清楚地说明了这个问题，它可以发送一个消息给对方，并能够使对方的电脑关闭、重新启动或重新登录。-WinSock API is a group for the transmission of data on the network and exchange information. Although there are now many tools such as FTP program on the network can transmit data and documents, but through WinSock greater programming flexibility, it does not need the care network connectivity details, but with WinSock very complicated programming. In Delphi, we do not need directly with the WinSock API deal because TServerSocket TClientSocket components and devices (in Internet pages) package of the most WinSock API, making the right WinSock visit greatly simplified. Following the example of the remote control very clear illustration of this problem, it can send a message to each other and to make each other's computers shut down, restart or re-logged.