HTTP是封装了TCP/IP协议,让其更能适合互联网中的数据传输。全称:文本传输协议
组成三部分:请求行,请求头,请求体
请求行:请求方式,请求的URL,请求的协议版本(第一行)
请求头:以K:V来记录请求的属性(第一行到空行之间)
请求体:携带请求的参数(空行以下)
请求报文:
POST /search HTTP/1.1 Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-excel, application/vnd.ms-powerpoint,
application/msword, application/x-silverlight, application/x-shockwave-flash, */* Referer: <a href="http://www.google.cn/">http://www.google.cn/</a> Accept-Language: zh-cn Accept-Encoding: gzip, deflate User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; TheWorld) Host: <a href="http://www.google.cn">www.google.cn</a> Connection: Keep-Alive Cookie: PREF=ID=80a06da87be9ae3c:U=f7167333e2c3b714:NW=1:TM=1261551909:LM=1261551917:S=ybYcq2wpfefs4V9g;
NID=31=ojj8d-IygaEtSxLgaJmqSjVhCspkviJrB6omjamNrSm8lZhKy_yMfO2M4QMRKcH1g0iQv9u-2hfBW7bUFwVh7pGaRUb0RnHcJU37y-
FxlRugatx63JLv7CWMD6UB_O_r hl=zh-CN&source=hp&q=domety
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