How to troubleshoot 'Failed to connect to server using basic client' error (Event task: authTask, msg: authenticating, code: 7; Event task: authTask, msg: auth request sent, code: 8)?"

[Nikitanagar]

Hello @mobizt,
sorry for bother you again. I have already read the documentation and update some important lines in the library. I'm still facing connectivity problems.

I have added the GSM macros #define TINY_GSM_MODEM_SIM7600 in src/Config.h file. Please assist me in resolving this issue, if i'm missing something from the documentation.

ERROR: ERROR.mConnectBasicClient: Failed to connect to server using basic client.
Event task: authTask, msg: authenticating, code: 7
Event task: authTask, msg: auth request sent, code: 8

ERROR.mConnectBasicClient: Failed to connect to server using basic client.
ERROR.mConnectBasicClient: Failed to connect to server using basic client.
ERROR.mConnectBasicClient: Failed to connect to server using basic client.
ERROR.mConnectBasicClient: Failed to connect to server using basic client.
Event task: authTask, msg: error, code: 11

[mobizt]

If you actually read the documentation thoroughly as I always convinced this in your last post, you will get the answer why you get this error.
 

When you use ESP_SSLClient which included in this Firebase library, you should know that that library works in the same way as ESP8266 WiFiClientSecure and its ropo is already state in the documentation.

If you visit the ESP_SSLClient repo and read its documentation and test with the ESP_SSLClient library example, you will get the idea.

Your problem is TinyGSM client (basic client) cannot connect to the mobile network using your device.

You have to prove that your SIM, Mobile 4G/GSM network works with TinyGSM and ESP_SSLClient before asking the question here because it is quite irrelevant.

[mobizt]

For ESP_SSLClient, the server SSL certificate is needed for verification or kipping it using setInsecure function as in WiFiClientSecure library.

[Nikitanagar]

Thank you @mobizt for your response and help