请求报文
POST /cgi-bin/httpconn HTTP/1.1
POST：请求地址
Host: 111.161.64.121
HOST：主机头
Accept: /
Accept :accept 属性
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
U-A：客户端类型
Connection: Keep-Alive
connection: :keep-Alive 持续连接
Cache-Control: no-cache
cache-control：缓存管理
Accept-Encoding: gzip, deflate
Accept-enconding： 支持压缩
Content-Type: application/octet-stream
content-type：传输类型
Content-Length: 218
content-length：传输长度
响应报文
HTTP/1.1 200 OK
HTTP:200成功返回值正常
Server: httpsf2
server：主机类型
Connection: Keep-alive
Connection：持续可连接
Content-Type: text/octet
Content-Type：传输类型
Content-Length: 2291
Content-Length：传输长度
