[Deprecated Version] Failed to connect to server using basic client - Error code: -1

[Nikitanagar]

Hi @mobizt,

Could you help us understand what Error code: -1 represents in this context?
Is there any known workaround or patch we can apply while still using this deprecated version?
Is the issue possibly related to ESP_SSLClient handshake or unstable GSM connections?

We truly appreciate the work you’ve done and understand if official support is limited. Any advice would still be very helpful.
Thanks in advance

[mobizt]

That library is end of life and I have always said that the support is also ended.

The new library is better in any kind e.g. flexibility, speed, code size, reliability, performance, simple API, network independent, portable etc.

No need to migrate as both library design concepts are different, but you can make your old code to work by deleting FirebaseData object from your current code and use the wrapper class like this example.
https://github.com/mobizt/FirebaseClient/tree/main/examples/RealtimeDatabase/Wrapper

The new library is network independent and does nothing with network library you used (WiFi/Ethernet/GSM).

There is no network set up in the new Firebase library. And no filesystem set up as the library is filesystem independent too.

The only thing you have to do is making your network/SSL client that can connect to the network and server as usual.

[mobizt]

At the time I'm posting the Github frontend system is error.

As I said that this library does nothing with your network library, but the example code is also provided when working with Ethernet and mobile modem (GSM/LTE).

Please see the initModem() function and how to use ESP_SSLClient in this example.
https://github.com/mobizt/FirebaseClient/blob/main/examples/RealtimeDatabase/StreamGSM/StreamGSM.ino

[mobizt]

At the time I'm posting the Github frontend system is error.

As I said that this library does nothing with your network library, but the example code is also provided when working with Ethernet and mobile modem (GSM/LTE).

Please see the initModem() function and how to use ESP_SSLClient in this example.
https://github.com/mobizt/FirebaseClient/blob/main/examples/RealtimeDatabase/StreamGSM/StreamGSM.ino

[mobizt]

The error is because the old Firebase library does not detect the modem you used.

ERROR.mConnectBasicClient: Failed to connect to server using basic client

Make sure that you define the macro TINY_GSM_MODEM_???? in the old library config file and in your sketch.

If you are using TinyGSMClient forked library from device developer that some new macros TINY_GSM_MODEM_???? are added and the old Firebase library does not know them, you cannot use that forked TinyGSMClient library, use the official TinyGSMClient library instead.

[Nikitanagar]

It works sometimes, but other times it gives this error:
ERROR.mConnectBasicClient: Failed to connect to server using basic client or

ERROR.available: SSL engine failed to update.
Failed to insert values
Error code: -1000

[mobizt]

It is about your modem and the network client libraryissue as ESP_SSLClient can't connect to server or server is unreachable when the connection is closed by remote server.

The TCP session is kept open after connected. Firebase is usually closed the connection in 2 minutes that can make the unreachable server.

The network client should handle the connection and its statusl (by sending heartbeat data regulary) If neteork client reports the connection status correctly, this condition of unreachable server will not exist.

You should call ssl client stop to close the session every 2 minutes since last connection.