Sim300 server.exe not working

Hiii alll, I have tried opening google .com reading above comments but was not successful , Here is my commands:
at+cgatt=1
OK
at+cipcsgp=1,"internet"
OK
at+cstt
OK
at+ciicr
OK
at+cifsr
100.88.109.172
at+cdnsorip=1
OK
at+cipsprt=1
OK
at+cipstart="tcp","www.google.com","80"
OK

CONNECT OK
at+cipsend
> GET/index.html HTTP/1.1(cntrl+m)(cntrl+j)
Host:www.google.com(cntrl+m)(cntrl+j)
Accept:*/*(cntrl+m)(cntrl+j)
Accept-language:en-us(cntrl+m)(cntrl+j)
(cntrl+j)
(cntrl+z)

But nothing is happening, even m jot receiving any error

after this
Accept-language:en-us
\r\n\r\n(ctrl+z)