code: def atlasdb_renew_peer( peer_hostport, now, con=None, path=None ):
      
      with AtlasDBOpen(con=con, path=path) as dbcon:
          if now is None:
              now = time.time()
  
          sql = "UPDATE peers SET discovery_time = ? WHERE peer_hostport = ?;"
          args = (now, peer_hostport)
  
          cur = dbcon.cursor()
          res = atlasdb_query_execute( cur, sql, args )
          dbcon.commit()
  
      return True
docs: Renew a peer's discovery time