C语言 HTTP协议下载文件，实现断点续传，socket通讯，目前只支持ip和port方式连接，有兴趣的读者可完善域名方式。

-C language HTTP protocol to download files, to achieve HTTP, socket communication, currently only supports ip and port connected, interested readers may improve its domain name.

 　 　 　 　 　 　 Code into http.c: http protocol to download files to achieve, socket.c: package linux socket function when transplanted socket.c simply modify the function can be.

 　 　 　 　 　 We want to help, I pro-test available!