make an http request with sim300 module

I am using SIM300 module.I want to make an http request to my live web server.i saw someny threads regarding this but not fount any solution.

sim used:Idea India with GPRS offer
APN: internet
step i followed in hyper terminal:

****************************************************************

AT+CGATT=1
AT+CGDCONT=1,"IP","internet"
AT+CSTT="internet","",""
AT+CIICR
AT+CIFSR
AT+CIPSTATUS
AT+CIPHEAD=1
AT+CDNSORIP=1
AT+CIPSTART="TCP","www.xxxxxxxxxx.in,"80"
AT+CIPSEND
GET /projects/shop/add_switch.php HTTP/1.1
Host: https://www.xxxxxxx.in
Connection: Keep-Alive
Accept: */*
Accept-Language: en-us


********************************************

then serwer showing 400 BADREQUEST error


i also tried with the commands following

AT+CGATT=1
AT+CSTT="internet","",""
AT+CIICR
AT+CIFSR
AT+SAPBR=3,1,"CONTYPE","GPRS"

but it shows error.Is AT+SAPBR compatible for SIM300.

HELP ME
THANKS in advance.