Update LICENCE.

dump packets by core, instead of by ports;without fopen/fclose while dumping

Add pkt_tx_delay parameter in config.ini.
It should be default while handling large concurrent requests, otherwise
it will reduce the throughput.
But if there are only a little, you can set it to les

Add pkt_tx_delay parameter in config.ini.
It should be default while handling large concurrent requests, otherwise
it will reduce the throughput.
But if there are only a little, you can set it to less than 100, even to
0, to reduce the delay of the connection.

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use 4 spaces instead tab

use 4 spaces instead tab

modify according to MR.Wang

modify according to MR.Wang