demo r.call_type use protocol name
use two new ex for main loop continue or exit
rm pv.call_type, use pv.protocol
rename quit helper methods
refactor out http/data server, use any_server
r refactor out getBlob for common use
use DBCall should set cfg port then call .init
in or out of connect env, report send/reiv errors

1. solo use or in connect env, sync call error will report
2. on receive response from oracle, can report error
psp.web remove loggers