AT     =>OK
AT+CGACT=1      =>+CME ERROR: operation not allowed
AT+CRESET      =>OK  *ATREADY: 1  +CPIN: READY  SMS DONE  +CGEV: EPS PDN ACT 1  +CGEV: ME PDN ACT 8,1
AT+CGDCONT=1,"IP","CMNET"    =>OK
AT+CGACT=1,1        =>OK   +CGEV: NW MODIFY 1,0
AT+HTTPINIT     =>OK
AT+HTTPPARA="URL","https://www.nobiggie.cn/test/test"     =>OK
AT+HTTPACTION=0  //http  
AT+HTTPREAD=0,500  //https
OK
+HTTPACTION: 0,200,32587

AT+HTTPREAD=200     =>OK