name1=value1&name2=value2
{"name1": "value1","name2": "value2"}
<root><name1>value1</name1><name2>value2</name2></root>
Connection
Accept
Host
Content-Length
Content-Type
Cookie
User-Agent
application/x-www-form-urlencoded
application/json
application/xml
text/css
image/gif
text/html
image/jpeg
text/javascript
image/png
application/pdf
text/plain