Probably related to the SSL cipher that is used by the server. Can you access the non-https url?
Private Sub AppStart
Serial1.Initialize(115200)
Log("AppStart")
polling_Tick
End Sub
Sub polling_Tick
HttpJob.Initialize("HttpJob")
HttpJob.Download("https://xxxx.firebaseio.com/xxx.json")
End Sub
Sub JobDone (Job As JobResult)
If Job.Success Then
Log(Job.Response)
Else
Log("error")
End If
End Sub
Works fine here. Tested with this code:
HttpJob.Initialize("HttpJob")
HttpJob.Post("http://myserveronline.xxx/file.php", "SELECT * FROM table")
CallSubPlus("LinkFireBase",1000,0)' --->Sub
Private Sub LinkFireBase(unused As Byte)
HttpJob.Download("https://xxxxxxx.firebaseio.com/xxxxxx.json")
CallSubPlus("LinkFireBase",1000,0)' loop polling
End Sub