How to send data to API using SIM900

Question

I have connected GSM SIM900 to laptop using USB-Serial converter. I have a GET API deployed on Azure. I am trying to send data to it using below AT commands:

AT+CCID
AT+CREG?
AT+CGATT=1
AT+CGACT=1,1

AT+SAPBR=3,1,"APN","www"
AT+SAPBR=1,1

AT+HTTPINIT
AT+HTTPPARA="URL", "https://<name>.azurewebsites.net/api/InjectData?d1=+11.2345+&d2=+71.12345"
AT+HTTPACTION=0
AT+HTTPTERM

All of the commands response with OK but once I send AT+HTTPACTION=0 I get response as 603. Not able to understand this properly as the API works fine in Postman. What could be the reason for the failure?

Answer 1

Have you tried reading the api response with

I think it can be used like that AT+HTTPREAD

AT+HTTPINIT
AT+HTTPPARA="URL", "https://<name>.azurewebsites.net/api/InjectData?d1=+11.2345+&d2=+71.12345"
AT+HTTPACTION=0
AT+HTTPREAD 
AT+HTTPTERM