I upgraded my firmware on my SIM900 module so that I can use AT+HTTPSSL=1. The command returns OK and appears to be recognized. However I still have issues when trying to connect to certain secure sites.
For example this example (from
https://www.youtube.com/watch?v=cpgQOmQwUL8&t=344s&ab_channel=iforce2d works fine (with my APN parameters):
AT+SAPBR=3,1,"APN","Justworx" AT+SAPBR=1,1 AT+HTTPINIT AT+HTTPPARA="CID",1 AT+HTTPPARA="URL","http://www.iforce2d.net/test.php" AT+HTTPACTION=0 AT+HTTPREAD=0,34
But this code returns a 603 code:
AT+SAPBR=3,1,"APN","Justworx" AT+SAPBR=1,1 AT+HTTPINIT AT+HTTPSSL=1 AT+HTTPPARA="CID",1 AT+HTTPPARA="URL","https://sherver.co.za/time.php" AT+HTTPACTION=0
I am connected to the GPRS context and can get an IP address if I use the AT command to check.
My firmware is: Revision:1137B06SIM900M64_ST_ENHANCE
Any ides anyone?
Should I use a different module?
My Sim is a Justworx IoT sim