RequestHeaderValuesMap
USER-AGENT : CCBot/2.0 (https://commoncrawl.org/faq/), 
ACCEPT : text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8, 
ACCEPT-LANGUAGE : en-US,en;q=0.5, 
IF-MODIFIED-SINCE : Mon, 12 Apr 2021 07:33:50 GMT, 
ACCEPT-ENCODING : br,gzip, 
HOST : free.mobifone.vn, 
CONNECTION : Keep-Alive, 

Request
USER-AGENT: CCBot/2.0 (https://commoncrawl.org/faq/)
ACCEPT: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
ACCEPT-LANGUAGE: en-US,en;q=0.5
IF-MODIFIED-SINCE: Mon, 12 Apr 2021 07:33:50 GMT
ACCEPT-ENCODING: br,gzip
HOST: free.mobifone.vn
CONNECTION: Keep-Alive