configure get timeout

[FedX33]

Hi,
i try to configure the timeout of one FirebaseData object. This specific object is used to collect very small data with Firebase.RTDB.getJson()
I tried Firebase.RTDB.setReadTimeout(&fbdo, 1000) but is has no effect.
My expectation would be a returned false when calling getJson() latest after 1000ms when no server response is received till then.

am i missing something?
br

[mobizt]

Your requirement is unclear.

That function is not for what you think.
https://firebase.google.com/docs/reference/rest/database#section-param-timeout

You should set the buffer large enough for your data to prevent SSL reading error (read timed out).

Firebase-ESP-Client/examples/RTDB/Basic/Basic.ino

Line 123 in 51a6625

fbdo.setBSSLBufferSize(4096 /* Rx buffer size in bytes from 512 - 16384 */, 1024 /* Tx buffer size in bytes from 512 - 16384 */);

[FedX33]

OK got it thank you.
i use buffer 4096/ 1024 should be fine.

requirement would be to leave Firebase.RTDB.getJson() early if no http response is received in a specified time. I now understand that setReadTimeout is just the timeout on server side.

if i use get() every 2-5 seconds the connection is interrupted after some time, i always wait for the return value of Firebase.RTDB.getJson() which then takes up to 1min and longer. Usecase is getting key (which is UNIX time at my usecase) of first and last entry at a node and deleting first node, until specified number of childs is reached.
even with attached stream to node without callback communication gets interrupted. Callback is not possible because of too much data at node.

I will find another way, i know its not optimal anyways because of sending a lot of header and doing far too much http requests..
thank you clarification :)
br

[mobizt]

This library keeps the session alive to reuse and close the session on library side in 3 minutes, but Firebase (Google) server will close the connection on its end (silently) in 30 seconds (depends on its policy).

After 30 seconds since connected, the server is gone and no response from it.

Then you have to manage your code to close the session when it opened for 30 seconds.

To close the session, just use
fbdo.stopWiFiClient();

[FedX33]

now it makes sense thanks a lot. Works perfectly fine :)

[mobizt]

Instead of polling read using get, you can use stream for watching the data changes.
https://github.com/mobizt/Firebase-ESP-Client/tree/main/examples/RTDB/DataChangesListener

[FedX33]

yes i know, but not possible in this case. Node has hundrets of entries where Key is a unix timestamp. attaching a callback which would receive all the data after attaching will fail. Thats why i use get and query to filter to last and first entry.
I just tried to delete every first node, if the difference of first key and last key exceeds a specified time to clean the database amd limit total entries. Data structure is {unixtimestamp:{temperature: xx humidity: xx}}