Test connection, Save

Nothing is saved before it was tried. Test connection proves the details on the screen work; Save and start backup is only possible right after a test passed on exactly those details.

1. Connects with what you typed.
2. Makes the folder named after your index, inside the folder or bucket you gave.
3. Writes a small test file into it, reads its size back, and removes it.
4. Says Connected: a file was written and read back, or Could not connect and the reason the service gave: a wrong password, a bucket that does not exist, a host that does not answer, a folder you may not write into.

Change any field after a test and the Save button greys out again until you test once more.

• Keeps the backend on this phone, sealed in the phone's own key store, so a backup can run without asking anyone first.
• Sends it to your Opensolr account, sealed there too, against your index. That is how a new phone finds it. Opensolr reads the credentials only to hand them back to a phone signed in as you, and for the web app while you use it signed in; nothing else at Opensolr connects to your storage.
• If the account cannot be reached at that moment, the backend still works from this phone, and it is sent to the account at the start of the next run.
• Starts the first backup at once, and takes you to the Photo backup screen to watch it.

• On every phone that uses them, sealed with a key that never leaves that phone.
• In your Opensolr account, sealed with a key kept on Opensolr's servers outside the web and the database. Signing in as you, on a phone or in the web app, is what unseals them, nothing else.
• Never in your index, never in a file of your storage, never in a log.