Function rounds_wait 

fn rounds_wait()

The sharing’s full rounds wait while the connection is measured slow (share::set_frugal: a round restating the records, a megabyte or two sent whole, waits while this device appended less than four), as the window’s exchanges have them. While a bulk import of texts goes on, none starts at all: share::exchange_here says so before each exchange, an alarm’s too (share::set_importing).