replaced 'session' with 'origin' in push_disable session is not defined in this function, trying to access it leads to an error. The correct reference seems to be 'origin'. (This may have come about by copying from the similar code in process_stanza_queue.)

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summary: Allow server administrators to probe any user
...

This module lets server administrators send `<presence type="probe"/>`
to any local user and receive their presence in response, bypassing
roster checks.