I am using the SIM900A gsm module and trying to connect with my site using a GET request. My issue is that when submitting AT+HTTPACTION=0, I receive a status the response as +HTTPACTION:0,600,0. In this case, the GET request is raised successfully but the response size is 0. In this case, I am not able to fetch a response from the server. The datasheet says the 600 code means "Not HTTP PDU" but I am not aware of how I need to address this. I also sometimes receive code 200, but it is very rare. following is the response of the AT commands:
AT
OK
AT+COPS?
+COPS: 0,0,"Vi India"
OK
AT+CGDCONT=1,"IP","internet"
OK
AT+CGDCONT=?
+CGDCONT: (1-3),"IP",,,(0),(0)
OK
AT+SAPBR=3,1,"CONTYPE","GPRS"
OK
AT+SAPBR=3,1,"APN","internet"
OK
AT+SAPBR=1,1
OK
AT+SAPBR=2,1
+SAPBR: 1,1,"100.103.109.188"
OK
AT+HTTPINIT
OK
AT+HTTPPARA="CID",1
OK
AT+HTTPPARA="URL","mysite.co.in/newlist.php?K=THS&a=35.97&b=18.84"
OK
AT+HTTPACTION=0
OK
+HTTPACTION:0,600,0
AT+HTTPTERM
OK
Thanks in advance for the support.
Edit I have tried further, I have observed that still, the status code still remains the same 0,600,0 status code. However, when I changed the URL to www.google.com, it returns the expected +HTTPACTION:0,200, xxx status code. Please provide some guidance to get the issue resolve.
